610 Medizin und Gesundheit
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Institute
- Medizinische Klinik und Poliklinik I (562) (remove)
Sonstige beteiligte Institutionen
- Zentraleinheit Klinische Massenspektrometrie (3)
- Johns Hopkins School of Medicine (2)
- Johns Hopkins School of Medicine, Baltimore, MD, U.S. (2)
- Apotheke, Universitätsklinikum Würzburg (1)
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We report on 499 patients with severe aplastic anemia aged >= 50 years who underwent hematopoietic cell transplantation (HCT) from HLA-matched sibling (n = 275, 55%) or HLA-matched (8/8) unrelated donors (n =187, 37%) between 2005 and 2016. The median age at HCT was 57.8 years; 16% of patients were 65 to 77 years old. Multivariable analysis confirmed higher mortality risks for patients with performance score less than 90% (hazard ratio HR], 1.41; 95% confidence interval [CI], 1.03 to 1.92; P= .03) and after unrelated donor transplantation (HR, 1.47; 95% CI,1 to 2.16; P = .05). The 3-year probabilities of survival for patients with performance scores of 90 to 100 and less than 90 after HLA-matched sibling transplant were 66% (range, 57% to 75%) and 57% (range, 47% to 76%), respectively. The corresponding probabilities after HLA-matched unrelated donor transplantation were 57% (range, 48% to 67%) and 48% (range, 36% to 59%). Age at transplantation was not associated with survival, but grades II to IV acute graft-versus-host disease (GVHD) risks were higher for patients aged 65 years or older (subdistribution HR [sHR], 1.7; 95% confidence interval, 1.07 to 2.72; P= .026). Chronic GVHD was lower with the GVHD prophylaxis regimens calcineurin inhibitor (CNI) + methotrexate (sHR, .52; 95% CI, .33 to .81; P= .004) and CNI alone or with other agents (sHR, .27; 95% CI, .14 to .53; P < .001) compared with CNI + mycophenolate. Although donor availability is modifiable only to a limited extent, choice of GVHD prophylaxis and selection of patients with good performance scores are key for improved outcomes. (C) 2018 American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All rights reserved.
Background: RET (rearranged during transfection) variants are the most prevalent oncogenic events in medullary thyroid cancer (MTC). In advanced disease, multi-tyrosine kinase inhibitors (MKIs) cabozantinib and vandetanib are the approved standard treatment irrespective of RET status. The actual outcome of patients with RET-positive MTC treated with MKIs is ill described. Methods: We here retrospectively determined the RET oncogene variant status with a targeted DNA Custom Panel in a prospectively collected cohort of 48 patients with advanced MTC treated with vandetanib and/or cabozantinib at four German referral centers. Progression-free survival (PFS) and overall survival (OS) probabilities were estimated using the Kaplan-Meier method. Results: In total, 44/48 (92%) patients had germline or somatic RET variants. The M918T variant was found in 29/44 (66%) cases. In total, 2/32 (6%) patients with a somatic RET variant had further somatic variants, while in 1/32 (3%) patient with a germline RET variant, additional variants were found. Only 1/48 (2%) patient had a pathogenic HRAS variant, and no variants were found in 3 cases. In first-line treatment, the median OS was 53 (95% CI (95% confidence interval), 32–NR (not reached); n = 36), and the median PFS was 21 months (12–39; n = 33) in RET-positive MTC patients. In second-line treatment, the median OS was 18 (13–79; n = 22), and the median PFS was 3.5 months (2–14; n = 22) in RET-positive cases. Conclusions: RET variants were highly prevalent in patients with advanced MTC. The treatment results in RET-positive cases were similar to those reported in unselected cohorts.
Hintergrund: Das Therapieansprechen von fortgeschrittenen Nebennierenrindenkarzinomen (ACC) unter den aktuellen Chemotherapieregimen ist nicht zufriedenstellend.Ebenfalls zeigte sich in klinischen Studien nur ein limitiertes Ansprechen auf Immuntherapien. Eine hohe Mutationslast (TMB) und das Vorhandensein einer spezifischen DNA Signatur sind charakteristisch für Tumore mit Mutationen in dem Gen MUTYH, welches die mutY-DNA-Glykosilase kodiert. Es wurde gezeigt, dass dies potentiell ein Ansprechen auf eine Immontherapie vorhersagen kann. Eine hohe Mutationslast in ein ACC Zellline konnte bis jetzt noch nicht gezeigt werden.
Methoden: Die JIL--2266 Zelllinie wurde etabliert aus einem primären ACC-Tumor. Diese wurde umfänglich charakterisiert und oxidativer Schaden, welcher durch eine dysfunktionelle mutY DNA Glykosilase verursacht wird, konnte gezeigt werden.
Ergebnis: Wir charakterisierten eine neue ACC Zelllinie JIL-2266, welche eine Defizienz in dem mutY DNA-Reperaturmechanismus aufweist. Die JIL-2266 Zellen weisen ein mit dem Primärtumor kongruentes STR-Profil auf. Die Zellen proliferieren mit einer Verdopplungszeit von 41 bis 13h. Die immunhisochemische Färbung zeigte eine Positivität für SF-1. In der Massenspektrometrie fand sich keine signifikante Steroidproduktion. Die JIL-2266 haben eine hemizygote Mutation in dem Tumorsuppressorgen TP53 und MUTYH. Exomsequenzierung zeigte 683 SNVs. Wir fanden erhöhten oxidativen DNA Schaden in der Zelllinie und im Primärtumor, verursacht durch eine gestörte mutY Glykosilase Funktion und eine Anhäufung von 8-Oxoguanin.
Zusammenfassung: Dieses Zellinie ist ein wertvolles ACC Modell mit einer hohen Mutationslast und ein Werkzeug um oxidativen DNA Schaden in der Nebenniere zu untersuchen.
Background
Chronic heart failure (HF) is known to increase the risk of developing Alzheimer’s dementia significantly. Thus, detecting and preventing mild cognitive impairment, which is common in patients with HF, is of great importance. Serum biomarkers are increasingly used in neurological disorders for diagnostics, monitoring, and prognostication of disease course. It remains unclear if neuronal biomarkers may help detect cognitive impairment in this high-risk population. Also, the influence of chronic HF and concomitant renal dysfunction on these biomarkers is not well understood.
Methods
Within the monocentric Cognition.Matters-HF study, we quantified the serum levels of phosphorylated tau protein 181 (pTau) and neurofilament light chain (NfL) of 146 extensively phenotyped chronic heart failure patients (aged 32 to 85 years; 15.1% women) using ultrasensitive bead-based single-molecule immunoassays. The clinical work-up included advanced cognitive testing and cerebral magnetic resonance imaging (MRI).
Results
Serum concentrations of NfL ranged from 5.4 to 215.0 pg/ml (median 26.4 pg/ml) and of pTau from 0.51 to 9.22 pg/ml (median 1.57 pg/ml). We detected mild cognitive impairment (i.e., T-score < 40 in at least one cognitive domain) in 60% of heart failure patients. pTau (p = 0.014), but not NfL, was elevated in this group. Both NfL (ρ = − 0.21; p = 0.013) and pTau (ρ = − 0.25; p = 0.002) related to the cognitive domain visual/verbal memory, as well as white matter hyperintensity volume and cerebral and hippocampal atrophy. In multivariable analysis, both biomarkers were independently influenced by age (T = 4.6 for pTau; T = 5.9 for NfL) and glomerular filtration rate (T = − 2.4 for pTau; T = − 3.4 for NfL). Markers of chronic heart failure, left atrial volume index (T = 4.6) and NT-proBNP (T = 2.8), were further cardiological determinants of pTau and NfL, respectively. In addition, pTau was also strongly affected by serum creatine kinase levels (T = 6.5) and ferritin (T = − 3.1).
Conclusions
pTau and NfL serum levels are strongly influenced by age-dependent renal and cardiac dysfunction. These findings point towards the need for longitudinal examinations and consideration of frequent comorbidities when using neuronal serum biomarkers.
Background
Although Fabry disease (FD) is an X-linked lysosomal storage disorder caused by mutations in the α-galactosidase A gene (GLA), women may develop severe symptoms. We investigated X-chromosomal inactivation patterns (XCI) as a potential determinant of symptom severity in FD women.
Patients and Methods
We included 95 women with mutations in GLA (n = 18 with variants of unknown pathogenicity) and 50 related men, and collected mouth epithelial cells, venous blood, and skin fibroblasts for XCI analysis using the methylation status of the androgen receptor gene. The mutated X-chromosome was identified by comparison of samples from relatives. Patients underwent genotype categorization and deep clinical phenotyping of symptom severity.
Results
43/95 (45%) women carried mutations categorized as classic. The XCI pattern was skewed (i.e., ≥75:25% distribution) in 6/87 (7%) mouth epithelial cell samples, 31/88 (35%) blood samples, and 9/27 (33%) skin fibroblast samples. Clinical phenotype, α-galactosidase A (GAL) activity, and lyso-Gb3 levels did not show intergroup differences when stratified for X-chromosomal skewing and activity status of the mutated X-chromosome.
Conclusions
X-inactivation patterns alone do not reliably reflect the clinical phenotype of women with FD when investigated in biomaterial not directly affected by FD. However, while XCI patterns may vary between tissues, blood frequently shows skewing of XCI patterns.
Oncogenic transformation of lung epithelial cells is a multistep process, frequently starting with the inactivation of tumour suppressors and subsequent development of activating mutations in proto-oncogenes, such as members of the PI3K or MAPK families. Cells undergoing transformation have to adjust to changes, including altered metabolic requirements. This is achieved, in part, by modulating the protein abundance of transcription factors. Here, we report that the ubiquitin carboxyl-terminal hydrolase 28 (USP28) enables oncogenic reprogramming by regulating the protein abundance of proto-oncogenes such as c-JUN, c-MYC, NOTCH and ∆NP63 at early stages of malignant transformation. USP28 levels are increased in cancer compared with in normal cells due to a feed-forward loop, driven by increased amounts of oncogenic transcription factors such as c-MYC and c-JUN. Irrespective of oncogenic driver, interference with USP28 abundance or activity suppresses growth and survival of transformed lung cells. Furthermore, inhibition of USP28 via a small-molecule inhibitor resets the proteome of transformed cells towards a ‘premalignant’ state, and its inhibition synergizes with clinically established compounds used to target EGFR\(^{L858R}\)-, BRAF\(^{V600E}\)- or PI3K\(^{H1047R}\)-driven tumour cells. Targeting USP28 protein abundance at an early stage via inhibition of its activity is therefore a feasible strategy for the treatment of early-stage lung tumours, and the observed synergism with current standard-of-care inhibitors holds the potential for improved targeting of established tumours.
Background
Fabry Disease (FD) is an X-linked hereditary lysosomal storage disorder which leads to a multisystemic intralysosomal accumulation of globotriaosylceramid (Gb3). Besides prominent renal and cardiac organ involvement, patients commonly complain about vestibulocochlear symptoms like high-frequency hearing loss, tinnitus and vertigo. However, comprehensive data especially on vertigo remain scarce. The aim of this study was to examine the prevalence and characteristics of vertigo and hearing loss in patients with FD, depending on renal and cardiac parameters and get hints about the site and the pattern of the lesions.
Methods
Single-center study with 57 FD patients. Every patient underwent an oto-rhino-laryngological examination as well as videonystagmography and vestibular evoked myogenic potentials (VEMPs) and audiological measurements using pure tone audiometry and auditory brainstem response audiometry (ABR). Renal function was measured by eGFR, cardiac impairment was graduated by NYHA class.
Results
More than one out of three patients (35.1%) complained about hearing loss, 54.4% about vertigo and 28.1% about both symptom. In 74% a sensorineural hearing loss of at least 25 dB was found, ABR could exclude any retrocochlear lesion. Caloric testing showed abnormal values in 71.9%, VEMPs were pathological in 68%. A correlation between the side or the shape of hearing loss and pathological vestibular testing could not be revealed.
Conclusions
Hearing loss and vertigo show a high prevalence in FD. While hearing loss seems due to a cochlear lesion, peripheral vestibular as well as central nervous pathologies cause vertigo. Thus, both the site of lesion and the pathophysiological patterns seem to differ.
Aims
Cognitive dysfunction occurs frequently in patients with heart failure (HF), but early detection remains challenging. Serum glial fibrillary acidic protein (GFAP) is an emerging biomarker of cognitive decline in disorders of primary neurodegeneration such as Alzheimer's disease. We evaluated the utility of serum GFAP as a biomarker for cognitive dysfunction and structural brain damage in patients with stable chronic HF.
Methods and results
Using bead-based single molecule immunoassays, we quantified serum levels of GFAP in patients with HF participating in the prospective Cognition.Matters-HF study. Participants were extensively phenotyped, including cognitive testing of five separate domains and magnetic resonance imaging (MRI) of the brain. Univariable and multivariable models, also accounting for multiple testing, were run. One hundred and forty-six chronic HF patients with a mean age of 63.8 ± 10.8 years were included (15.1% women). Serum GFAP levels (median 246 pg/mL, quartiles 165, 384 pg/mL; range 66 to 1512 pg/mL) did not differ between sexes. In the multivariable adjusted model, independent predictors of GFAP levels were age (T = 5.5; P < 0.001), smoking (T = 3.2; P = 0.002), estimated glomerular filtration rate (T = −4.7; P < 0.001), alanine aminotransferase (T = −2.1; P = 0.036), and the left atrial end-systolic volume index (T = 3.4; P = 0.004). NT-proBNP but not serum GFAP explained global cerebral atrophy beyond ageing. However, serum GFAP levels were associated with the cognitive domain visual/verbal memory (T = −3.0; P = 0.003) along with focal hippocampal atrophy (T = 2.3; P = 0.025).
Conclusions
Serum GFAP levels are affected by age, smoking, and surrogates of the severity of HF. The association of GFAP with memory dysfunction suggests that astroglial pathologies, which evade detection by conventional MRI, may contribute to memory loss beyond ageing in patients with chronic HF.
Background
Anderson–Fabry disease (FD) is an X-linked lysosomal storage disorder with varying organ involvement and symptoms, depending on the underlying mutation in the alpha-galactosidase A gene (HGNC: GLA). With genetic testing becoming more readily available, it is crucial to precisely evaluate pathogenicity of each genetic variant, in order to determine whether there is or might be not a need for FD-specific therapy in affected patients and relatives at the time point of presentation or in the future.
Methods
This case series investigates the clinical impact of the specific GLA gene variant c.376A>G (p.Ser126Gly) in five (one heterozygous and one homozygous female, three males) individuals from different families, who visited our center between 2009 and 2021. Comprehensive neurological, nephrological and cardiac examinations were performed in all cases. One patient received a follow-up examination after 12 years.
Results
Index events leading to suspicion of FD were mainly unspecific neurological symptoms. However, FD-specific biomarkers, imaging examinations (i.e., brain MRI, heart MRI), and tissue-specific diagnostics, including kidney and skin biopsies, did not reveal evidence for FD-specific symptoms or organ involvement but showed normal results in all cases. This includes findings from 12-year follow-up in one patient with renal biopsy.
Conclusion
These findings suggest that p.Ser126Gly represents a benign GLA gene variant which per se does not cause FD. Precise clinical evaluation in individuals diagnosed with genetic variations of unknown significance should be performed to distinguish common symptoms broadly prevalent in the general population from those secondary to FD.
Introduction
Malnutrition in cancer patients often remains undetected and underestimated in clinical practice despite studies revealing prevalences from 20 to 70%. Therefore, this study aimed to identify patient groups exposed to an increased nutritional risk in a university oncological outpatient center.
Methods
Between May 2017 and January 2018 we screened oncological patients there using the malnutrition universal screening tool (MUST). Qualitative data were collected by a questionnaire to learn about patients’ individual information needs and changes in patients’ diets and stressful personal nutrition restrictions.
Results
We included 311 patients with various cancers. 20.3% (n = 63) were found to be at high risk of malnutrition, 16.4% (n = 51) at moderate risk despite a mean body mass index (BMI) of 26.5 ± 4.7 kg/m2. The average age was 62.7 (± 11.8) with equal gender distribution (52% women, n = 162). In 94.8% (n = 295) unintended weight loss led to MUST scoring. Patients with gastrointestinal tumors (25%, n = 78) and patients >65 years (22%, n = 68) were at higher risk. Furthermore, there was a significant association between surgery or chemotherapy within six months before survey and a MUST score ≥2 (OR = 3.6). Taste changes, dysphagia, and appetite loss were also particular risk factors (OR = 2.3–3.2). Young, female and normal-weight patients showed most interest in nutrition in cancer. However, only 38% (n = 118) had a nutritional counseling.
Conclusion
This study confirms that using the MUST score is a valid screening procedure to identify outpatients at risk of developing malnutrition. Here one in five was at high risk, but only 1% would have been detected by BMI alone. Therefore, an ongoing screening procedure with meaningful parameters should be urgently implemented into the clinical routine of cancer outpatients as recommended in international guidelines.
Simple Summary
In melanoma patients treated with dabrafenib and trametinib, dose reductions and treatment discontinuations related to adverse events (AE) occur frequently. However, the associations between patient characteristics, AE, and exposure are unclear. Our prospective study analyzed serum (hydroxy-)dabrafenib and trametinib exposure and investigated its association with toxicity and patient characteristics. Additionally, the feasibility of at-home sampling of capillary blood was assessed, and a model to convert capillary blood concentrations to serum concentrations was developed. (Hydroxy-)dabrafenib or trametinib exposure was not associated with age, sex, body mass index, or AE. Co-medication with P-glycoprotein inducers was associated with lower trough concentrations of trametinib but not (hydroxy-)dabrafenib. The applicability of the self-sampling of capillary blood was demonstrated. Our conversion model was adequate for estimating serum exposure from micro-samples. The monitoring of dabrafenib and trametinib may be useful for dose modification and can be optimized by at-home sampling and our new conversion model.
Abstract
Patients treated with dabrafenib and trametinib for BRAF\(^{V600}\)-mutant melanoma often experience dose reductions and treatment discontinuations. Current knowledge about the associations between patient characteristics, adverse events (AE), and exposure is inconclusive. Our study included 27 patients (including 18 patients for micro-sampling). Dabrafenib and trametinib exposure was prospectively analyzed, and the relevant patient characteristics and AE were reported. Their association with the observed concentrations and Bayesian estimates of the pharmacokinetic (PK) parameters of (hydroxy-)dabrafenib and trametinib were investigated. Further, the feasibility of at-home sampling of capillary blood was assessed. A population pharmacokinetic (popPK) model-informed conversion model was developed to derive serum PK parameters from self-sampled capillary blood. Results showed that (hydroxy-)dabrafenib or trametinib exposure was not associated with age, sex, body mass index, or toxicity. Co-medication with P-glycoprotein inducers was associated with significantly lower trough concentrations of trametinib (p = 0.027) but not (hydroxy-)dabrafenib. Self-sampling of capillary blood was feasible for use in routine care. Our conversion model was adequate for estimating serum PK parameters from micro-samples. Findings do not support a general recommendation for monitoring dabrafenib and trametinib but suggest that monitoring can facilitate making decisions about dosage adjustments. To this end, micro-sampling and the newly developed conversion model may be useful for estimating precise PK parameters.
Acute ischemic cardiac injury predisposes one to cognitive impairment, dementia, and depression. Pathophysiologically, recent positron emission tomography data suggest astroglial activation after experimental myocardial infarction (MI). We analyzed peripheral surrogate markers of glial (and neuronal) damage serially within 12 months after the first ST-elevation MI (STEMI). Serum levels of glial fibrillary acidic protein (GFAP) and neurofilament light chain (NfL) were quantified using ultra-sensitive molecular immunoassays. Sufficient biomaterial was available from 45 STEMI patients (aged 28 to 78 years, median 56 years, 11% female). The median (quartiles) of GFAP was 63.8 (47.0, 89.9) pg/mL and of NfL 10.6 (7.2, 14.8) pg/mL at study entry 0–4 days after STEMI. GFAP after STEMI increased in the first 3 months, with a median change of +7.8 (0.4, 19.4) pg/mL (p = 0.007). It remained elevated without further relevant increases after 6 months (+11.7 (0.6, 23.5) pg/mL; p = 0.015), and 12 months (+10.3 (1.5, 22.7) pg/mL; p = 0.010) compared to the baseline. Larger relative infarction size was associated with a higher increase in GFAP (ρ = 0.41; p = 0.009). In contrast, NfL remained unaltered in the course of one year. Our findings support the idea of central nervous system involvement after MI, with GFAP as a potential peripheral biomarker of chronic glial damage as one pathophysiologic pathway.
Objective
To evaluate diagnostic accuracy of the corticotropin-releasing hormone (CRH) stimulation test and the overnight 8 mg dexamethasone suppression test (DST) for the differentiation of Cushing’s disease (CD) and ectopic Cushing’s syndrome (ECS).
Methods
Retrospective study in 6 European centers. Inclusion criteria: patients with a) overt adrenocorticotropin (ACTH)-dependent Cushing’s syndrome at the time of dynamic testing, b) histopathological confirmed tumors and/or c) postoperative biochemical remission and/or adrenal insufficiency. Optimal cut-offs were calculated via receiver operating characteristic (ROC) analysis using CD as reference.
Results
469 patients were analyzed [78% females; median age 43 years (IQR 19)]. CRH test and overnight 8 mg DST were performed in 420 [CD, n=394 (94%); ECS, n=26 (6%)] and 237 patients [228 CD (96%), 9 ECS (4%)]. Both tests were performed in 205 patients (44%). The post-CRH %-increase at 30 minutes of both ACTH (cut-off ≥31%, sensitivity 83%, specificity 85%, AUC 0.81) and cortisol (cut-off ≥12%, sensitivity 82%, specificity 89%, AUC 0.86) discriminated best between CD and ECS. A test duration of >60 minutes did not improve diagnostic performance of the CRH test. The optimal cortisol cut-off for the %-suppression during the 8 mg DST was ≥55% (sensitivity 80%, specificity 78%, AUC 0.75).
Conclusion
The CRH test has equivalent sensitivity but higher specificity than the 8 mg DST and is therefore the test of first choice. The diagnostic outcome of ACTH and cortisol is well comparable, however, sampling beyond 60 minutes post-CRH does not provide diagnostic benefits.
Vibrational spectroscopy can detect characteristic biomolecular signatures and thus has the potential to support diagnostics. Fabry disease (FD) is a lipid disorder disease that leads to accumulations of globotriaosylceramide in different organs, including the heart, which is particularly critical for the patient’s prognosis. Effective treatment options are available if initiated at early disease stages, but many patients are late- or under-diagnosed. Since Coherent anti-Stokes Raman (CARS) imaging has a high sensitivity for lipid/protein shifts, we applied CARS as a diagnostic tool to assess cardiac FD manifestation in an FD mouse model. CARS measurements combined with multivariate data analysis, including image preprocessing followed by image clustering and data-driven modeling, allowed for differentiation between FD and control groups. Indeed, CARS identified shifts of lipid/protein content between the two groups in cardiac tissue visually and by subsequent automated bioinformatic discrimination with a mean sensitivity of 90–96%. Of note, this genotype differentiation was successful at a very early time point during disease development when only kidneys are visibly affected by globotriaosylceramide depositions. Altogether, the sensitivity of CARS combined with multivariate analysis allows reliable diagnostic support of early FD organ manifestation and may thus improve diagnosis, prognosis, and possibly therapeutic monitoring of FD.
The immune system plays a vital role in maintaining tissue integrity and organismal homeostasis. The sudden stress caused by myocardial infarction (MI) poses a significant challenge for the immune system: it must quickly substitute dead myocardial with fibrotic tissue while controlling overt inflammatory responses. In this review, we will discuss the central role of myocardial regulatory T-cells (Tregs) in orchestrating tissue repair processes and controlling local inflammation in the context of MI. We herein compile recent advances enabled by the use of transgenic mouse models with defined cardiac antigen specificity, explore whole-heart imaging techniques, outline clinical studies and summarize deep-phenotyping conducted by independent labs using single-cell transcriptomics and T-cell repertoire analysis. Furthermore, we point to multiple mechanisms and cell types targeted by Tregs in the infarcted heart, ranging from pro-fibrotic responses in mesenchymal cells to local immune modulation in myeloid and lymphoid lineages. We also discuss how both cardiac-specific and polyclonal Tregs participate in MI repair. In addition, we consider intriguing novel evidence on how the myocardial milieu takes control of potentially auto-aggressive local immune reactions by shaping myosin-specific T-cell development towards a regulatory phenotype. Finally, we examine the potential use of Treg manipulating drugs in the clinic after MI.
Background
Adrenalectomies are rare procedures especially in childhood. So far, no large cohort study on this topic has been published with data on to age distribution, operative procedures, hospital volume and operative outcome.
Methods
This is a retrospective analysis of anonymized nationwide hospital billing data (DRG data, 2009-2017). All adrenal surgeries (defined by OPS codes) of patients between the age 0 and 21 years in Germany were included.
Results
A total of 523 patient records were identified. The mean age was 8.6 ± 7.7 years and 262 patients were female (50.1%). The majority of patients were between 0 and 5 years old (52% overall), while 11.1% were between 6 and 11 and 38.8% older than 12 years. The most common diagnoses were malignant neoplasms of the adrenal gland (56%, mostly neuroblastoma) with the majority being younger than 5 years. Benign neoplasms in the adrenal gland (D350) account for 29% of all cases with the majority of affected patients being 12 years or older. 15% were not defined regarding tumor behavior. Overall complication rate was 27% with a clear higher complication rate in resection for malignant neoplasia of the adrenal gland. Bleeding occurrence and transfusions are the main complications, followed by the necessary of relaparotomy. There was an uneven patient distribution between hospital tertiles (low volume, medium and high volume tertile). While 164 patients received surgery in 85 different “low volume” hospitals (0.2 cases per hospital per year), 205 patients received surgery in 8 different “high volume” hospitals (2.8 cases per hospital per year; p<0.001). Patients in high volume centers were significant younger, had more extended resections and more often malignant neoplasia. In multivariable analysis younger age, extended resections and open procedures were independent predictors for occurrence of postoperative complications.
Conclusion
Overall complication rate of adrenalectomies in the pediatric population in Germany is low, demonstrating good therapeutic quality. Our analysis revealed a very uneven distribution of patient volume among hospitals.
Background: Eosinophils appear to contribute to the efficacy of immunotherapy and their frequency was suggested as a predictive biomarker. Whether this observation could be transferred to patients treated with targeted therapy remains unknown. Methods: Blood and serum samples of healthy controls and 216 patients with advanced melanoma were prospectively and retrospectively collected. Freshly isolated eosinophils were phenotypically characterized by flow cytometry and co-cultured in vitro with melanoma cells to assess cytotoxicity. Soluble serum markers and peripheral blood counts were used for correlative studies. Results: Eosinophil-mediated cytotoxicity towards melanoma cells, as well as phenotypic characteristics, were similar when comparing healthy donors and patients. However, high relative pre-treatment eosinophil counts were significantly associated with response to MAPKi (p = 0.013). Eosinophil-mediated cytotoxicity towards melanoma cells is dose-dependent and requires proximity of eosinophils and their target in vitro. Treatment with targeted therapy in the presence of eosinophils results in an additive tumoricidal effect. Additionally, melanoma cells affected eosinophil phenotype upon co-culture. Conclusion: High pre-treatment eosinophil counts in advanced melanoma patients were associated with a significantly improved response to MAPKi. Functionally, eosinophils show potent cytotoxicity towards melanoma cells, which can be reinforced by MAPKi. Further studies are needed to unravel the molecular mechanisms of our observations.
Background
Although surgery is considered the first-line treatment for patients with endogenous Cushing’s syndrome (CS), medical therapy is often required to control severe hypercortisolism. Metyrapone and osilodrostat are both steroidogenic inhibitors targeting the 11β-hydroxylase, however, their therapeutic effectiveness has not yet been directly compared. This study aimed to evaluate metyrapone and osilodrostat in the short-term therapy of CS.
Methods
Retrospective analysis of patients with endogenous CS treated with metyrapone or osilodrostat as monotherapy for at least 4 weeks. Main outcome measures were serum cortisol and 24h urinary free cortisol (UFC) at baseline (T0) and after 2 (T1), 4 (T2), and 12 weeks (T3) of therapy.
Results
16 patients with endogenous CS were identified (pituitary n=7, adrenal n=4, ectopic CS n=5). Each 8 patients were treated with metyrapone and osilodrostat. Despite heterogeneity, both groups showed comparable mean UFC levels at T0 (metyrapone: 758 µg/24h vs osilodrostat: 817 µg/24h; p=0.93). From T0 to T1, the decrease of UFC was less pronounced under metyrapone than osilodrostat (-21.3% vs -68.4%; median daily drug dose: 1000 mg vs 4 mg). This tendency persisted at T2 (-37.3% vs -50.1%; median drug dose: 1250 mg vs 6 mg) while at T3 a decrease in UFC from T0 was more pronounced in the metyrapone group (-71.5% vs -51.5%; median dose 1250 mg vs 7 mg). Under osilodrostat, a QTc-interval prolongation was identified at T3 (mean 432 ms vs 455 ms). From T0 to T2, the number of antihypertensive drugs remained comparable under metyrapone and decreased under osilodrostat (n= -0.3 vs n= -1.0).
Conclusion
Although both drugs show comparable therapeutic efficacy, osilodrostat seems to reduce cortisol levels and to control blood pressure faster.
Targeting molecular alterations as an effective treatment for isocitrate dehydrogenase-wildtype glioblastoma (GBM) patients has not yet been established. Sterol-O-Acyl Transferase 1 (SOAT1), a key enzyme in the conversion of endoplasmic reticulum cholesterol to esters for storage in lipid droplets (LD), serves as a target for the orphan drug mitotane to treat adrenocortical carcinoma. Inhibition of SOAT1 also suppresses GBM growth. Here, we refined SOAT1-expression in GBM and IDH-mutant astrocytoma, CNS WHO grade 4 (HGA), and assessed the distribution of LD in these tumors. Twenty-seven GBM and three HGA specimens were evaluated by multiple GFAP, Iba1, IDH1 R132H, and SOAT1 immunofluorescence labeling as well as Oil Red O staining. To a small extent SOAT1 was expressed by tumor cells in both tumor entities. In contrast, strong expression was observed in glioma-associated macrophages. Triple immunofluorescence labeling revealed, for the first time, evidence for SOAT1 colocalization with Iba1 and IDH1 R132H, respectively. Furthermore, a notable difference in the amount of LD between GBM and HGA was observed. Therefore, SOAT1 suppression might be a therapeutic option to target GBM and HGA growth and invasiveness. In addition, the high expression in cells related to neuroinflammation could be beneficial for a concomitant suppression of protumoral microglia/macrophages.
Recent technical advancements allow cardiac MRI (CMR) examinations in the presence of so-called MRI conditional active cardiac implants at 3.0 T. However, the artifact burden caused by susceptibility effects remain an obstacle. All measurements were obtained at a clinical 3.0 T scanner using an in-house designed cubic phantom and optimized sequences for artifact evaluation (3D gradient echo sequence, multi-slice 2D turbo spin echo sequence). Reference sequences according to the American Society for Testing and Materials (ASTM) were additionally applied. Four representative active cardiac devices and a generic setup were analyzed regarding volume and shape of the signal void. For analysis, a threshold operation was applied to the grey value profile of each data set. The presented approach allows the evaluation of the signal void and shape even for larger implants such as ICDs. The void shape is influenced by the orientation of the B0-field and by the chosen sequence type. The distribution of ferromagnetic material within the implants also matters. The void volume depends both on the device itself, and on the sequence type. Disturbances in the B0 and B1 fields exceed the visual signal void. This work presents a reproducible and highly defined approach to characterize both signal void artifacts at 3.0 T and their influencing factors.
Background
Troponin elevation is common in ischemic stroke (IS) patients. The pathomechanisms involved are incompletely understood and comprise coronary and non-coronary causes, e.g. autonomic dysfunction. We investigated determinants of troponin elevation in acute IS patients including markers of autonomic dysfunction, assessed by heart rate variability (HRV) time domain variables.
Methods
Data were collected within the Stroke Induced Cardiac FAILure (SICFAIL) cohort study. IS patients admitted to the Department of Neurology, Würzburg University Hospital, underwent baseline investigation including cardiac history, physical examination, echocardiography, and blood sampling. Four HRV time domain variables were calculated in patients undergoing electrocardiographic Holter monitoring. Multivariable logistic regression with corresponding odds ratios (OR) and 95% confidence intervals (CI) was used to investigate the determinants of high-sensitive troponin T (hs-TnT) levels ≥14 ng/L.
Results
We report results from 543 IS patients recruited between 01/2014–02/2017. Of those, 203 (37%) had hs-TnT ≥14 ng/L, which was independently associated with older age (OR per year 1.05; 95% CI 1.02–1.08), male sex (OR 2.65; 95% CI 1.54–4.58), decreasing estimated glomerular filtration rate (OR per 10 mL/min/1.73 m2 0.71; 95% CI 0.61–0.84), systolic dysfunction (OR 2.79; 95% CI 1.22–6.37), diastolic dysfunction (OR 2.29; 95% CI 1.29–4.02), atrial fibrillation (OR 2.30; 95% CI 1.25–4.23), and increasing levels of C-reactive protein (OR 1.48 per log unit; 95% CI 1.22–1.79). We did not identify an independent association of troponin elevation with the investigated HRV variables.
Conclusion
Cardiac dysfunction and elevated C-reactive protein, but not a reduced HRV as surrogate of autonomic dysfunction, were associated with increased hs-TnT levels in IS patients independent of established cardiovascular risk factors.
Herzkreislauferkrankungen sind sowohl in Deutschland als auch weltweit die führende Todesursache. Große epidemiologische Studien ermöglichten das Erkennen von kardiovaskulären Risikofaktoren, das Modellieren von Scores zur Risikostratifizierung und das Erarbeiten von Präventions- und Therapiestrategien. Trotz steter Anpassungen und Validierungen basieren Risikoscores auf konservativen Ergebnissen, deren limitierte Sensitivität, mit Akzentuierung für Frauen, Personen relativ jungem und fortgeschrittenem Alters, die Mehrheit unerwarteter kardiovaskulärer Erstereignisse bei bis dato asymptomatischen Individuen mitverantwortet. Modalitäten zur Erhebung eines Gefäßstatus zeigten ergänzende, respektive alternative Möglichkeiten zur Identifizierung von vermeintlichen Hochrisikopatienten mit signifikanter Verbesserung in der Risikoprädiktion.
Die hier vorgelegte Arbeit war prospektiv geplant als Subanalyse „Plaque- Screening“ der populationsbasierten STAAB Kohortenstudie Würzburg. Im Zentrum der Arbeit stand das Ultraschall-basierte Plaque-Screening peripherer Arterien. Die Arbeit adressierte die Fragestellungen „Prävalenz subklinischer Atherosklerose in der Allgemeinbevölkerung in Würzburg“, „Zusatznutzen einer Femoraluntersuchung“, „Einfluss traditioneller Risikofaktoren auf die Plaqueprävalenz“ und „Übereinstimmung der Risikoklassifizierung des ESC SCORES mit dem Plaquestatus“.
Die STAAB Kohortenstudie analysiert die Prävalenz und Inzidenz von Vorstufen der Herzinsuffizienz (Stadien A und B gemäß der AHA/ACC Klassifikation) in der Allgemeinbevölkerung von Würzburg. Studienbeginn war Dezember 2013. Der geplante Probandenumfang war n=5000. Die Auswahl der Studienteilnehmer erfolgte geschlechts- und altersstratifiziert über das Einwohnermeldeamt nach Zufallsprinzip. Einschlusskriterien waren Alter zwischen 30–79 Jahren und Hauptwohnsitz im Landkreis Würzburg, einziges Ausschlusskriterien war eine diagnostizierte Herzinsuffizienz Stadium C oder D.
Die Subanalyse „Plaque Screening” umfasste eine Stichprobe aus der STAAB Kohorte ab Oktober 2015, n=250, nach Anwendung des zusätzlichen Einschlusskriterium Alter 40–69 Jahre und Ausschluss von Probanden mit inkonklusiven Daten oder zurückgezogenem Einverständnis.
Die Resultate unserer Fragestellungen waren mit Ergebnissen in der Literatur kongruent. So detektierten wir eine relevante Plaqueprävalenz (50%) in der Allgemeinbevölkerung von Würzburg, insbesondere auch unter Personen mit niedrigem Risiko (34%).
Wir wiesen einen quantifizierbaren Zusatznutzen für die Femoraluntersuchung, nebst etablierter Karotisuntersuchung, durch eine relevante Zunahme der Plaqueprävalenz (+15% absolut) und Reklassifizierungsrate (+11% absolut) nach.
Wir dokumentierten eine erwartet positive Assoziation zwischen traditionellen Risikofaktoren und Plaqueprävalenz mit geschlechtsspezifischer Akzentuierung.
Wir belegten eine Diskrepanz zwischen der Risikoklassifizierung des ESC SCORE und den Ergebnissen des Plaque-Screenings.
In Konklusion interpretieren wir, dass das Inkorporieren eines ultraschallbasierten Gefäß-Screenings in bestehende Präventionsstrategien zur Steigerung der Sensitivität aktueller Risikomodelle beitragen könnte. Daraus wäre eine Verbesserung der Risikoprädiktion, eine frühere und gezieltere Prävention, sowie eine Reduktion von Morbidität, Mortalität und Gesundheitskosten ableiten lässt, muss in weiteren prospektiven Studien untersucht werden. Unsere Daten legen jedoch nahe, dass insbesondere für das weibliche Geschlecht und Personen in niedrigem und sehr fortgeschrittenem Alter von diesem Ansatz profitieren könnten.
Background
Fast and accurate T1ρ mapping in myocardium is still a major challenge, particularly in small animal models. The complex sequence design owing to electrocardiogram and respiratory gating leads to quantification errors in in vivo experiments, due to variations of the T\(_{1p}\) relaxation pathway. In this study, we present an improved quantification method for T\(_{1p}\) using a newly derived formalism of a T\(_{1p}\)\(^{*}\) relaxation pathway.
Methods
The new signal equation was derived by solving a recursion problem for spin-lock prepared fast gradient echo readouts. Based on Bloch simulations, we compared quantification errors using the common monoexponential model and our corrected model. The method was validated in phantom experiments and tested in vivo for myocardial T\(_{1p}\) mapping in mice. Here, the impact of the breath dependent spin recovery time T\(_{rec}\) on the quantification results was examined in detail.
Results
Simulations indicate that a correction is necessary, since systematically underestimated values are measured under in vivo conditions. In the phantom study, the mean quantification error could be reduced from − 7.4% to − 0.97%. In vivo, a correlation of uncorrected T\(_{1p}\) with the respiratory cycle was observed. Using the newly derived correction method, this correlation was significantly reduced from r = 0.708 (p < 0.001) to r = 0.204 and the standard deviation of left ventricular T\(_{1p}\) values in different animals was reduced by at least 39%.
Conclusion
The suggested quantification formalism enables fast and precise myocardial T\(_{1p}\) quantification for small animals during free breathing and can improve the comparability of study results. Our new technique offers a reasonable tool for assessing myocardial diseases, since pathologies that cause a change in heart or breathing rates do not lead to systematic misinterpretations. Besides, the derived signal equation can be used for sequence optimization or for subsequent correction of prior study results.
Testing based on multiple choice questions (MCQ) is one of the most established forms of assessment, not only in the medical field. Extended matching questions (EMQ) represent a specific type of MCQ designed to require higher levels of cognition, such as problem-solving. The purpose of this evaluation was to assess the suitability and efficiency of EMQ as an assessment method. EMQ were incorporated into the end-of-semester examination in internal medicine, in which 154 students participated, and compared with three established MCQ types. Item and examination quality were investigated, as well as readability and processing time. EMQ were slightly more difficult to score; however, both item discrimination and discrimination index were higher when compared to other item types. EMQ were found to be significantly longer and required more processing time, but readability was improved. Students judged EMQ as clearly challenging, but attributed significantly higher clinical relevance when compared to established MCQ formats. Using the Spearman-Brown prediction, only ten EMQ items would be needed to reproduce the Cronbach’s alpha value of 0.75 attained for the overall examination. EMQ proved to be both efficient and suitable when assessing medical students, demonstrating powerful characteristics of reliability. Their expanded use in favor of common MCQ could save examination time without losing out on statistical quality.
Die Fabry-Nephropathie zählt zu den häufigsten Manifestationen des Morbus Fabry und ist als Indikator für die Schwere der Erkrankung prognosebestimmend.
Daher ist die Erforschung des Verlaufs der Nierenfunktion bei den betroffenen Patientinnen und Patienten von großer Bedeutung, um sie bestmöglich und vor allem rechtzeitig therapieren zu können.
Aufgrund der X-chromosomalen Vererbung der seltenen lysosomalen Speicherkrankheit variieren die Krankheitsverläufe sowohl zwischen Männern und Frauen als auch innerhalb eines Geschlechts, sodass die Unterteilung des Patientenkollektivs in klassische und nicht klassische Ausprägungsformen eine gängige Methode zur Beantwortung von Fragestellungen zu Morbus Fabry darstellt.
Dies erfolgte in der vorgelegten Arbeit für das Studienkollektiv des FAZiT Würzburg nach Arends et al. auf Grundlage der phänotypischen Merkmale der Angiokeratome und der Cornea verticillata.
Gegenstand dieser Dissertation war die Untersuchung der Nierenfunktion bei Patientinnen und Patienten mit Morbus Fabry in Abhängigkeit ihres Geschlechts und ihrer Klassifikation.
Hierzu wurden im Studienkollektiv des FAZiT Würzburg die Veränderungen der geschätzten glomerulären Filtrationsrate (eGFR) im Zeitverlauf analysiert.
Es hat sich gezeigt, dass sich der Verlauf der Fabry-Nephropathie zwischen Männern und Frauen in der Kohorte statistisch signifikant unterschied und zudem die Klassifikation in Abhängigkeit des Geschlechts prognostisch relevante Informationen für den Verlauf der Nierenerkrankung enthielt.
Demnach ist bei Männern im Vergleich zu Frauen im Allgemeinen sowie bei klassischen Männern im Vergleich zu nicht klassischen Männern im Speziellen von einer größeren Abnahme der glomerulären Filtrationsrare im Verlauf auszugehen.
Diese Erkenntnis kann zu einer individuelleren Vorsorge und Therapie der Erkrankung bei Männern beitragen. Unter Voraussetzung einer präzisen und zuverlässigen Diagnose der Angiokeratome und der Cornea verticillata wäre es im männlichen Kollektiv auf diese Weise möglich, durch nichtinvasive klinische Untersuchungen Risikopatienten zu identifizieren.
Für die Differenzierung der unterschiedlichen Krankheitsverläufe zwischen klassischen und nicht klassischen Frauen haben sich im Studienkollektiv des FAZiT die phänotypischen Merkmale nicht bewährt. Die Krankheitsausprägung im weiblichen Kollektiv ist durch die X-chromosomale Vererbung und das Phänomen der Lyoniserung komplexer und bisher nicht vollends verstanden. Weitere Forschungsbemühungen zu bisher unbekannten Risikofaktoren oder epigenetischen Einflüssen auf den Verlauf der Fabry-Nephropathie bei Frauen sind daher notwendig und könnten zu einem besseren Verständnis beitragen.
Non-coding RNAs (ncRNAs) are a type of genetic material that do not encode proteins but regulate the gene expression at an epigenetic level, such as microRNAs (miRNAs) and long non-coding RNAs (lncRNAs). The role played by ncRNAs in many physiological and pathological processes has gained attention during the last few decades, as they might be useful in the diagnosis, treatment and management of several human disorders, including endocrine and oncological diseases. Adrenocortical carcinoma (ACC) is a rare and aggressive endocrine cancer, still characterized by high mortality and morbidity due to both endocrine and oncological complications. Despite the rarity of this disease, recently, the role of ncRNA has been quite extensively evaluated in ACC. In order to better explore the role of the ncRNA in human ACC, this review summarizes the current knowledge on ncRNA dysregulation in ACC and its potential role in the diagnosis, treatment, and management of this tumor.
Restrictive cardiomyopathy is a rare cardiac disease causing severe diastolic dysfunction, ventricular stiffness and dilated atria. In consequence, it induces heart failure often with preserved ejection fraction and is associated with a high mortality. Since it is a poor clinical prognosis, patients with restrictive cardiomyopathy frequently require heart transplantation. Genetic as well as non-genetic factors contribute to restrictive cardiomyopathy and a significant portion of cases are of unknown etiology. However, the genetic forms of restrictive cardiomyopathy and the involved molecular pathomechanisms are only partially understood. In this review, we summarize the current knowledge about primary genetic restrictive cardiomyopathy and describe its genetic landscape, which might be of interest for geneticists as well as for cardiologists.
Therapeutic drug monitoring (TDM) is increasingly relevant for an individualized antibiotic therapy and subsequently a necessary tool to reduce multidrug-resistant pathogens, especially in light of diminishing antimicrobial capabilities. Critical illness is associated with profound pharmacokinetic and pharmacodynamic alterations, which challenge dose finding and the application of particularly hydrophilic drugs such as β-lactam antibiotics. Methods: Implementation strategy, potential benefit, and practicability of the developed standard operating procedures were retrospectively analyzed from January to December 2020. Furthermore, the efficacy of the proposed dosing target of piperacillin in critically ill patients was evaluated. Results: In total, 160 patients received piperacillin/tazobactam therapy and were subsequently included in the study. Of them, 114 patients received piperacillin/tazobactam by continuous infusion and had at least one measurement of piperacillin serum level according to the standard operating procedure. In total, 271 measurements were performed with an average level of 79.0 ± 46.0 mg/L. Seventy-one piperacillin levels exceeded 100 mg/L and six levels were lower than 22.5 mg/L. The high-level and the low-level group differed significantly in infection laboratory parameters (CRP (mg/dL) 20.18 ± 11.71 vs. 5.75 ± 5.33) and renal function [glomerular filtration rate (mL/min/1.75 m2) 40.85 ± 26.74 vs. 120.50 ± 70.48]. Conclusions: Piperacillin levels are unpredictable in critically ill patients. TDM during piperacillin/tazobactam therapy is highly recommended for all patients. Although our implementation strategy was effective, further strategies implemented into the daily clinical workflow might support the health care staff and increase the clinicians' alertness.
Catheter-related bloodstream infections (CRBSI) are major complications for patients with life-threatening conditions requiring chronic vascular catheterization. The wide range of etiologic microbes and the ongoing development of resistance to antimicrobials with specific mechanisms of action make this an appropriate target for applying a nonspecific antimicrobial therapeutic. Taurolidine hydrolyzes into two antimicrobial moieties, formaldehyde and methylene glycol, which react with microbial surfaces. NeutrolinA (R) (taurolidine, heparin, calcium citrate) was recently introduced in Germany as an antimicrobial catheter lock solution. This postmarketing experience collected data on 201 patients at 20 centers from January 2014 through September 2016. Likely CRBSI was observed in 13 episodes in 47,118 days (0.2759 per 1000 days [0.1468, 0.4718]). Thrombosed catheter was observed in seven catheters in 47,118 days (0.1486 per 1000 days [0.0595, 0.3061]). No adverse drug reactions that led to the discontinuation of NeutrolinA (R) use were reported. Two patients experienced occasional transient dysgeusia. NeutrolinA (R), when used in conjunction with guideline-based catheter care, showed reduction in the rate of both CRBSI and catheter thrombosis relative to recent historical controls.
Background: Cardiovascular (CV) outcome trials in type 2 diabetes (T2D) have underrepresented patients with chronic kidney disease (CKD), leading to uncertainty regarding their kidney efficacy and safety. The CARMELINA (R) trial aims to evaluate the effects of linagliptin, a DPP-4 inhibitor, on both CV and kidney outcomes in a study population enriched for cardio-renal risk.
Methods: CARMELINA (R) is a randomized, double-blind, placebo-controlled clinical trial conducted in 27 countries in T2D patients at high risk of CV and/or kidney events. Participants with evidence of CKD with or without CV disease and HbA1c 6.5-10.0% (48-86 mmol/mol) were randomized 1:1 to receive linagliptin once daily or matching placebo, added to standard of care adjusted according to local guidelines. The primary outcome is time to first occurrence of CV death, non-fatal myocardial infarction, or non-fatal stroke. The key secondary outcome is a composite of time to first sustained occurrence of end-stage kidney disease, >= 40% decrease in estimated glomerular filtration rate (eGFR) from baseline, or renal death. CV and kidney events are prospectively adjudicated by independent, blinded clinical event committees. CARMELINA (R) was designed to continue until at least 611 participants had confirmed primary outcome events. Assuming a hazard ratio of 1.0, this provides 90% power to demonstrate non-inferiority of linagliptin versus placebo within the pre-specified non-inferiority margin of 1.3 at a one-sided a-level of 2.5%. If non-inferiority of linagliptin for the primary outcome is demonstrated, then its superiority for both the primary outcome and the key secondary outcome will be investigated with a sequentially rejective multiple test procedure.
Results: Between July 2013 and August 2016, 6980 patients were randomized and took >= 1 dose of study drug (40.6, 33.1, 16.9, and 9.4% from Europe, South America, North America, and Asia, respectively). At baseline, mean +/- SD age was 65.8 +/- 9.1 years, HbA1c 7.9 +/- 1.0%, BMI 31.3 +/- 5.3 kg/m(2), and eGFR 55 +/- 25 mL/min/1.73 m(2). A total of 5148 patients (73.8%) had prevalent kidney disease (defined as eGFR < 60 mL/min/1.73 m(2) or macroalbuminuria [albumin-to-creatinine ratio > 300 mg/g]) and 3990 patients (57.2%) had established CV disease with increased albuminuria; these characteristics were not mutually exclusive. Microalbuminuria (n = 2896 [41.5%]) and macroalbuminuria (n = 2691 [38.6%]) were common.
Conclusions: CARMELINA (R) will add important information regarding the CV and kidney disease clinical profile of linagliptin by including an understudied, vulnerable cohort of patients with T2D at highest cardio-renal risk.
Chronische Nierenerkrankungen gehen mit einer erhöhten kardiovaskulären Morbidität und Mortalität einher. Charakteristisch für chronische Nierenerkrankungen, insbesondere im Stadium der Dialysepflichtigkeit, ist eine ausgeprägte Voralterung der Gefäße. Die Vorgänge, die den beschleunigten vaskulären Alterungsprozessen zugrunde liegen, umfassen ein Zusammenspiel aus einem gestörten Mineralstoffwechsel, der Akkumulation urämischer Toxine und chronischer Inflammation. Das Renin-Angiotensin-Aldosteron-System (RAAS) nimmt dabei eine zentrale Rolle ein. Eine gesteigerte Aktivität des RAAS ist ein Merkmal von kardiorenalen Syndromen und moduliert jenseits seiner Effekte auf den Blutdruck vaskuläre Entzündungs- und Remodelingprozesse. Durch das vaskuläre Altern kommt es zur Abnahme arterieller Compliance und zur Erhöhung der Pulswellengeschwindigkeit (PWV). Dadurch erhöht sich das Risiko für Endorganschäden. Die arterielle Gefäßsteifigkeit ist ein unabhängiger Prädiktor für Mortalität bei chronisch-dialysepflichtiger Niereninsuffizienz und eine Reduktion arterieller Rigidität geht mit einem verbesserten Überleben einher. Randomisierte Studien bei Dialysepatienten konnten bislang keinen eindeutigen Nutzen etablierter pharmakologischer Interventionen zur Reduktion des kardiovaskulären Risikos und vaskulärer «Stiffeningprozesse» feststellen. Als ein potentiell wirksamer Therapieansatz werden Mineralokortikoidrezeptorantagonisten (MRA) angesehen. Die vorliegende Arbeit evaluierte im Rahmen der Placebo-kontrollierten, randomisierten «Mineralocorticoid-Receptor Antagonists in End-Stage Renal Disease» (MiREnDa) Studie, ob die tägliche Einnahme von 50 mg Spironolacton über neun Monate einen Effekt auf die vaskuläre Funktion bei Patienten mit dialysepflichtiger chronischer Nierenerkrankung hat. Neben aortaler PWV, Augmentationsindex, zentralem Puls- und Blutdruck wurden zur Evaluation der vaskulären Funktion die Compliance der thorakalen Aorta und der A. carotis communis sowie die Distensibilität der A. carotis communis und die fluss-vermittelte Dilatation der A. brachialis vor Studienbeginn als sekundäre Endpunkte festgelegt. Ein weiterer Aspekt, der evaluiert wurde, war die Frage nach Korrelationen zwischen PWV und Augmentationsindex einerseits und weiteren Parametern vaskulärer Funktion, klinischen Merkmalen und Biomarkern andererseits. Die vorliegende Arbeit versuchte darüber hinaus, klinische Merkmale (Komorbiditäten, Inflammation), die ein Therapieansprechen von MRA potentiell modulieren, zu identifizieren. Das zentrale Ergebnis der Arbeit war, dass eine MRA-Therapie mit 50 mg Spironolacton täglich über neun Monate im untersuchten Kollektiv keinen Effekt auf die vaskuläre Funktion zeigte.
Hintergrund:
Eine „blinde“ Perikardiozentese ist bei hämodynamisch instabilen Patienten in akuten Notfallsituationen Standard, wenn eine bildmorphologische Darstellung nicht verfügbar ist. In diesen Fällen orientiert man sich für den Ausgangspunkt der Punktion und die Stichrichtung an bestimmten anatomischen Landmarken. In der Literatur werden verschiedene Perikardpunktions-Techniken im Hinblick auf deren Ausgangspunkt und Stichrichtung für eine „blinde“ Perikardiozentese beschrieben. Ziel dieser retrospektiven Studie ist es, die Erfolgs- und Komplikationsrate von 13 verschiedenen simulierten Stichrichtungen für eine Perikardiozentese zu vergleichen.
Methodik:
Für die Simulation der Perikardpunktionen wurden 150 CT-Bilder von Patienten mit einem Perikarderguss von > 1 cm (Distanz zwischen Epi- und Perikard) benutzt. Es wurden 13 verschiedene Perikardpunktionen simuliert, die sich in ihrem Ausgangspunkt der Punktion, der Stichrichtung und dem Winkel zur Transversalebene unterschieden. Insgesamt wurden 1.950 Simulationen durchgeführt. Eine Perikardiozentese wurde als „erfolgreich“ gewertet, wenn der Perikarderguss getroffen wurde und die Saumbreite an der Punktionsstelle > 0,5 cm war. Im Falle einer „nicht erfolgreichen“ Punktion konnte der Erguss nicht getroffen werden und/ oder die Saumbreite an der Punktionsstelle war < 0,5 cm. Sowohl eine „erfolgreiche“ als auch eine „nicht erfolgreiche“ Punktion konnte mit Komplikationen verbunden sein. Die Fehlpunktion von Leber, Lunge, A. thoracica interna, RIVA, Colon oder Magen wurde als Komplikation gewertet.
Ergebnisse:
Die besten Ergebnisse konnten mit der Perikardpunktion von subxiphoidal ausgehend Richtung linke Medioclavicularlinie in einem Winkel von 30° zur Transversalebene erzielt werden: Die Erfolgsrate betrug 87 %. Diese simulierte Perikardiozentese hatte auch die niedrigste Komplikationsrate (5 %): Leber (n = 3; 2 %), Lunge (n = 2; 1,3 %), RIVA (n = 1; 0,7 %) und Colon (n = 1; 0,7 %). Die mittlere Distanz von der Punktionsstelle bis zum Perikarderguss betrug 5,5 cm.
Schlussfolgerung:
Im Rahmen dieser CT-basierten Studie bei 150 Patienten mit einem relevanten Perikarderguss (Distanz zwischen Epi- und Perikard > 1 cm) konnte mittels Simulation gezeigt werden, dass eine von subxiphoidal ausgehende „blinde“ Perikardiozentese in Richtung auf die linke MCL in einem Winkel von 30° zur Transversalebene mit 87 % die höchste Erfolgsrate und mit 5 % die niedrigste Komplikationsrate hat. Insgesamt variierte die Komplikationsrate je nach Stichrichtung zwischen 5 % und 32 %. Dies bestätigt, dass eine Perikardiozentese wenn möglich immer mithilfe bildmorphologischer Darstellung durchgeführt werden sollte, um Komplikationen auf ein Minimum zu reduzieren. Die „blinde“ Perikardpunktion sollte ausschließlich in äußersten Notfällen zum Einsatz kommen, wenn eine Bildgebung nicht oder nicht schnell genug zur Verfügung steht.
Über die klinische Präsentation von Knochenmetastasen (KM) und ihre Komplikationen, sog. Skeletal-related events (SRE), beim medullären Schilddrüsenkarzinom (MTC) ist aktuell wenig bekannt. Es ist Ziel dieser multizentrischen Studie, klinische und morphologische Eigenschaften von KM beim MTC zu beschreiben und die prognostische Rolle der Morphologie der KM herauszuarbeiten. Außerdem wird die Rolle der antiresorptiven Therapie (ART) sowie der tumorspezifischen Behandlung mit Tyrosinkinase-Inhibitoren (TKI) untersucht.
Insgesamt wurden 114 Patienten mit einem MTC und KM, welche zwischen 1973 und 2016 an vier deutschen Kliniken mit Schwerpunktversorgung diagnostiziert wurden, in die Analyse eingeschlossen.
Zeit-bis-Event Analysen wurden mittels Kaplan-Meier Kurve dargestellt und Gruppen mit dem Log-Rank Test verglichen. Risikofaktoren wurden mit Cox Regression identifiziert.
KM wurden im Median 2,1 Jahre nach der Erstdiagnose MTC diagnostiziert und traten in 79 % der Fälle multifokal auf. Die häufigste Lokalisation war die Wirbelsäule (86 %), gefolgt von der Hüfte (60 %). Die Morphologie der KM war in 32 % osteolytisch, in 25 % osteoblastisch und in 22 % wurde eine gemischte Morphologie beschrieben (unbekannt: 21 %).
Innerhalb einer medianen Beobachtungszeit von 26,6 Monaten nach der Erstdiagnose KM trat in 47 % der Fälle mindestens ein SRE auf (Knochenbestrahlung 50 %, pathologische Frakturen 32 %). Davon waren 42 % bei Patienten mit osteoytischen und 17 % bei osteoblastischen KM zu finden (P = 0,047). Osteolytische Metastasen (HR 3,85, 95 % KI 1,52-9,77, P = 0,005) waren mit einem schlechterem Gesamtüberleben assoziiert. Bei Patienten, die präventiv eine ART erhielten, traten signifikant weniger SREs auf als bei unbehandelten Patienten (P = 0,04). In einer Subanalyse der 10 Patienten, die vor dem Auftreten eines SREs einen TKI erhalten hatten, waren signifikant weniger SREs zu verzeichnen (p= 0,013).
Die Studie zeigt eine Assoziation zwischen osteolytischen KM und einer schlechteren Prognose. ART sowie TKI könnten eine protektive Rolle zur Vorbeugung von knochenbezogenen Ereignissen haben. Prospektive Studien sind notwendig, um diese möglichen Zusammenhänge zu prüfen.
Das fortgeschrittene Nebennierenkarzinom stellt Mediziner:innen im klinischen Alltag mit seinem aggressiven Verhalten vor eine große therapeutische Herausforderung. Bisher nimmt Mitotane die zentrale Rolle der medikamentösen Tumortherapie ein. Obwohl es seit über 60 Jahren im Einsatz ist, wurde die Frage der Effektivität einer Monotherapie im fortgeschrittenen Stadium in der Literatur bisher nur wenig untersucht. Daher wurden in dieser retrospektiven Studie Daten von 127 Patient:innen aus dem deutschen Nebennierenkarzinomregister untersucht, welche eine Mitotanemonotherapie bei Erst/- Rezidivdiagnose eines fortgeschrittenen ACC erhielten. Anhand dieses Datensatzes wurde die Ansprechrate, das progressionsfreie und Gesamtüberleben mithilfe der Kaplan- Meier- Methode ermittelt. Darüber hinaus wurde der Versuch einer Definition potenzieller Prädiktoren für ein verbessertes Ansprechen mittels Cox- Regressionsanalyse unternommen. Insgesamt wurde bei 26 Patient:innen (20,5%) ein objektives Ansprechen erzielt, von denen 3 Patient:innen eine komplette und 23 Patient:innen eine partielle Remission erreichten. Bei 32 weiteren Patient:innen (25,2%) wurde eine Stabilisierung der Erkrankung verzeichnet. Das progressionsfreie Überleben lag im Median bei 4,1 Monaten, das mediane Gesamtüberleben betrug 18,5 Monate. In der multivariaten Cox- Regressionsanalyse konnten zwei wesentliche, unabhängige Faktoren identifiziert werden: Patient:innen mit einer niedrigen Tumorlast (definiert als <10 Läsionen) scheinen im Vergleich zu Patient:innen mit einer höheren Tumorlast von der Therapie hinsichtlich des progressionsfreien Überlebens (HR:0,51; 95%-CI:0,33-0,79; p=0,02) und Gesamtüberlebens (HR:0,59; 95%-CI: 0,30-0,91; p=0,017) besser zu profitieren. Interessanterweise zeigen Patient:innen, die Mitotane erst zum Zeitpunkt eines Spätrezidivs (>360 Tage nach Erstdiagnose) erhalten haben, ein deutlich besseres Ansprechen im Vergleich zu Patient:innen, welche Mitotane unmittelbar nach Erstdiagnose erhielten: Es zeigte sich ein verlängertes progressionsfreies Überleben (HR: 0,35; 95%-CI: 0,23-0,55; p=0,001) und Gesamtüberleben (HR: 0,34; 95%-CI: 0,22-0,52; p=0,001). In der weiteren Analyse zeigte sich, dass sich ein Mitotanespiegel von >14mg/l günstig auf ein verbessertes Gesamtüberleben auswirkt. Zusammenfassend zeigt unsere bisher weltweit größte zu diesem Thema durchgeführte Studie, dass eine Mitotanemonotherapie unter bestimmten Voraussetzungen zu sehr guten Ergebnissen führen kann: Dabei scheinen Patient:innen mit einer niedrigen Tumorlast und dem späten Beginn einer Mitotanetherapie besonders geeignet für diese Therapiemodalität zu sein, während man Patient:innen mit Metastasen bei Erstdiagnose bzw. einer hohen Tumorlast zum Zeitpunkts des Rezidivs besser direkt mit einer Kombination aus Mitotane plus zytotoxischer Chemotherapie behandelt.
Nebennieren-Inzidentalome werden durch den zunehmenden Einsatz von bildgebenden Methoden immer häufiger zufällig entdeckt. Hierbei liegen vorrangig klinisch unauffällige Nicht-Aldosteron-produzierende adrenokortikale Adenome (NAPACA) vor, wobei Nicht-funktionelle Adenome (NFA) von Tumoren mit (möglicher) autonomen Cortisol-Sekretion (MACS und ACS) zu differenzieren sind.
Der Verlauf und die Prognose dieser Patienten werden teilweise noch kontrovers diskutiert. Die wesentlichen Fragestellungen dieser Arbeit lauteten, welche Dynamik Nebennieren-Inzidentalome (und hierbei insbesondere die NAPACA) hinsichtlich Hormonsekretion und Malignitätspotential aufweisen und welchen Einfluss sie auf das Gesamtüberleben der Betroffenen ausüben.
In dieser Studie wurde hierfür das Patientenkollektiv des Universitätsklinikums Würzburg zwischen 1998 und 2017 retrospektiv untersucht. Die Zuordnung zu Entitäten und die Interpretation der Daten erfolgte dabei anhand der Empfehlungen der aktuellen Europäischen Leitlinie zum Management von Nebennieren-Inzidentalomen.
Für diese Arbeit wurden 357 Patienten mit einem Nebennieren-Inzidentalom identifiziert, von denen 263 (73,7 %) der NAPACA-Gruppe zuzuordnen waren. Im Verlauf kam es bei 39 (10,9 %) der Patienten zu relevanten Veränderungen der endokrinen Aktivität und bei 4 (1,1 %) auch der Dignität, wodurch die Zuordnung zu einer anderen Tumorentität notwendig wurde. In den Mortalitätsanalysen stellten Hormonaktivität und Malignität relevante prognostische Einflüsse bei Patienten mit Nebennieren-Inzidentalom dar. Speziell Patienten mit MACS und ACS wiesen eine höhere Gesamtmortalität auf als solche mit NFA, wobei das Serumcortisol im Dexamethason-Suppressionstest für die multivariaten Cox-Regressionsanalysen als kontinuierliche und nicht kategoriale Variable betrachtet wurde. NAPACA-Patienten starben vorrangig an malignen, kardiovaskulären und infektiösen Ursachen.
Zusammenfassend weisen Patienten mit Nebennieren-Inzidentalom im Allgemeinen und mit NAPACA im Speziellen im Verlauf eine geringe endokrinologische und maligne Dynamik auf. Ihr Gesamtüberleben wird maßgeblich von Hormonaktivität und Dignität bzw. von der Höhe des Serumcortisols im Dexamethason-Hemmtest beeinflusst.
Phäochromozytome und Paragangliome (PPGL) sind seltene, katecholaminproduzierendeTumore des chromaffinen Gewebes. Die Erkrankung ist durch die Überproduktion von Katecholaminen gekennzeichnet und kann lebensbedrohliche Folgen haben. Die dieser Arbeit zugrunde liegende Studie untersuchte die interindividuellen Unterschiede im Metabolitenprofil bei Patient*innen mit PPGL im Vergleich zu Kontrollen mittels Flüssigchromatographie-Massenspektrometrie und einem Targeted Metabolomic Ansatz. Targeted Metabolomics beschreibt die Messung und Quantifizierung von im Voraus definierten Metaboliten in einer Probe. Von den 188 gemessenen Metaboliten zeigten vier Metabolite eine signifikanten Veränderung zwischen den Gruppen (Histidin, Threonin, LysoPC a C28:0 und Summe der Hexosen). Für alle vier Metabolite wurde ein Zusammenhang mit Katecholaminen im Urin beziehungsweise Metanephrinen im Plasma nachgewiesen. Subgruppenanalysen zeigten weitere Hinweise auf geschlechts- und phänotypspezifische Unterschiede im Metabolitenprofil zwischen Patient*innen mit PPGL und Kontrollen.
(1) Background: Locoregional lymphadenectomy (LND) in adrenocortical carcinoma (ACC) may impact oncological outcome, but the findings from individual studies are conflicting. The aim of this systematic review and meta-analysis was to determine the oncological value of LND in ACC by summarizing the available literature. (2) Methods: A systematic search on studies published until December 2020 was performed according to the PRISMA statement. The primary outcome was the impact of lymphadenectomy on overall survival (OS). Two separate meta-analyses were performed for studies including patients with localized ACC (stage I–III) and those including all tumor stages (I–IV). Secondary endpoints included postoperative mortality and length of hospital stay (LOS). (3) Results: 11 publications were identified for inclusion. All studies were retrospective studies, published between 2001–2020, and 5 were included in the meta-analysis. Three studies (N = 807 patients) reported the impact of LND on disease-specific survival in patients with stage I–III ACC and revealed a survival benefit of LND (hazard ratio (HR) = 0.42, 95% confidence interval (95% CI): 0.26–0.68). Based on results of studies including patients with ACC stage I–IV (2 studies, N = 3934 patients), LND was not associated with a survival benefit (HR = 1.00, 95% CI: 0.70–1.42). None of the included studies showed an association between LND and postoperative mortality or LOS. (4) Conclusion: Locoregional lymphadenectomy seems to offer an oncologic benefit in patients undergoing curative-intended surgery for localized ACC (stage I–III).
No studies have carried out an extensive analysis of the possible association between non-syndromic pheochromocytomas and paragangliomas (PPGLs) and other malignancies. To assess >the risk of additional malignancy in PPGL, we retrospectively evaluated 741 patients with PPGLs followed-up in twelve referral centers in Italy. Incidence of second malignant tumors was compared between this cohort and Italian patients with two subsequent malignancies. Among our patients, 95 (12.8%) developed a second malignant tumor, which were mainly prostate, colorectal and lung/bronchial cancers in males, breast cancer, differentiated thyroid cancer and melanoma in females. The standardized incidence ratio was 9.59 (95% CI 5.46–15.71) in males and 13.21 (95% CI 7.52–21.63) in females. At multivariable analysis, the risk of developing a second malignant tumor increased with age at diagnosis (HR 2.50, 95% CI 1.15–5.44, p = 0.021 for 50–59 vs. <50-year category; HR 3.46, 95% CI 1.67–7.15, p < 0.001 for >60- vs. <50-year). In patients with available genetic evaluation, a positive genetic test was inversely associated with the risk of developing a second tumor (HR 0.25, 95% CI 0.10–0.63, p = 0.003). In conclusion, PPGLs patients have higher incidence of additional malignant tumors compared to the general population who had a first malignancy, which could have an impact on the surveillance strategy.
Background: The chemokine receptor CCR7 is crucial for an intact immune function, but its expression is also associated with clinical outcome in several malignancies. No data exist on the expression of CCR7 in adrenocortical tumors. Methods: CCR7 expression was investigated by qRT-PCR and immunohistochemistry in 4 normal adrenal glands, 59 adrenocortical adenomas, and 181 adrenocortical carcinoma (ACC) samples. Results: CCR7 is highly expressed in the outer adrenocortical zones and medulla. Aldosterone-producing adenomas showed lower CCR7 protein levels (H-score 1.3 ± 1.0) compared to non-functioning (2.4 ± 0.5) and cortisol-producing adenomas (2.3 ± 0.6), whereas protein expression was variable in ACC (1.8 ± 0.8). In ACC, CCR7 protein expression was significantly higher in lymph node metastases (2.5 ± 0.5) compared to primary tumors (1.8±0.8) or distant metastases (2.0 ± 0.4; p < 0.01). mRNA levels of CCR7 were not significantly different between ACCs, normal adrenals, and adrenocortical adenomas. In contrast to other tumor entities, neither CCR7 protein nor mRNA expression significantly impacted patients' survival. Conclusion: We show that CCR7 is expressed on mRNA and protein level across normal adrenals, benign adrenocortical tumors, as well as ACCs. Given that CCR7 did not influence survival in ACC, it is probably not involved in tumor progression, but it could play a role in adrenocortical homeostasis.
Ziele
Diese Studie untersuchte, ob ein aktivierter R-Modus, als Surrogat für eine chronotrope Inkompetenz, bei Patienten mit kardialem Device (CIED), mit einer schlechteren Prognose während und nach einer Episode von akuter Herzinsuffizienz (AHF) verbunden ist.
Methoden und Ergebnisse
623 Patienten, die an einer laufenden prospektiven Kohortenstudie zur Phänotypisierung von Patienten mit akuter Herzinsuffizienz teilnahmen, wurden untersucht. Wir verglichen CIED-Träger mit R-Modus-Stimulation (n=37) mit CIED-Trägern ohne R-Modus (n=64) und Patienten ohne CIED (n=511). Die durchschnittliche Herzfrequenz bei Aufnahme lag bei Patienten im R-Modus signifikant niedriger als bei Patienten mit CIED, aber ohne R-Modus oder Patienten ohne CIED. Zwar war die Krankenhaussterblichkeit in allen Gruppen ähnlich, jedoch zeigte sich das für Alter und Geschlecht adjustierte 12-Monats-Mortalitätsrisiko in der R-Modus-Gruppe signifikant erhöht. Diese Effekte blieben auch nach multivariabler Adjustierung anhand der Komorbiditäten bestehen.
Schlussfolgerung
Bei Patienten, die wegen AHF aufgenommen wurden, war die Stimulation im R-Modus mit einem signifikant erhöhten 12-Monats-Mortalitätsrisiko verbunden. Unsere Ergebnisse legen nahe, dass chronotrope Inkompetenz per se mit einer erhöhten Vulnerabilität einhergeht und möglicherweise nicht angemessen durch Beschleunigungs-basierte R-Modus-Stimulation während und nach einer AHF-Episode behandelt wird.
Chronotype is defined as the behavioral manifestation of circadian rhythms related to the external light–dark cycle. Evening chronotype has been associated with an increased risk of developing cardiometabolic diseases in obesity. Menopause is a lifestage associated with an increased risk of developing cardiometabolic diseases and a change in circadian rhythmicity compared to pre-menopause. However, the prevalence of chronotype categories in menopause and their role in determining menopause-related cardiometabolic risk, mostly in obesity, have not been investigated. Thus, we aimed to investigate the prevalence of chronotype categories in post-menopausal women with obesity and their role in menopause-related cardiometabolic risk. In this cross-sectional study we enrolled 49 pre-menopausal and 74 post-menopausal women with obesity. Anthropometric parameters, lifestyle habits, adherence to the Mediterranean Diet (MD), sleep quality, chronotype and the presence of type 2 diabetes mellitus (T2DM) and cardiovascular diseases (CVD) were studied. No significance differences were detected in terms of lifestyle and adherence to the MD between pre- and post-menopausal women. Chronotype was classified as morning in 66 (53.6%), evening in 20 (16.3%) and intermediate in 37 (30.1%) women. In addition, pre-menopausal women with obesity showed a significantly higher chance to have an intermediate chronotype (OR = 2.21, 95% CI 1.28–3.83; p = 0.004), whereas post-menopausal women with obesity showed a trend to have a higher morning chronotype (OR = 1.42, 95% CI 0.98–2.06; p = 0.051), although this did not reach statistical significance. No significant differences were detected in terms of prevalence of evening chronotype between the two groups. However, the evening chronotype had a significantly higher risk to have T2DM compared to the morning (OR = 17.29, 95% CI 2.40–124.27; p = 0.005) and intermediate chronotypes (OR = 30.86, 95% CI 2.05–464.32; p = 0.013) in both pre- and post-menopausal women with obesity. In conclusion, the intermediate chronotype was significantly more prevalent in pre-menopausal women with obesity compared to post-menopausal women. Evening chronotype was associated to T2DM in both pre- and post-menopause. These results support the importance of including the assessment of chronotype in the management of women with obesity in post-menopause.
Background: Treatment options for NAFLD are still limited. Bariatric surgery, such as Roux-en-Y gastric bypass (RYGB), has been shown to improve metabolic and histologic markers of NAFLD. Glucagon-like-peptide-1 (GLP-1) analogues lead to improvements in phase 2 clinical trials. We directly compared the effects of RYGB with a treatment using liraglutide and/or peptide tyrosine tyrosine 3-36 (PYY\(_{3-36}\)) in a rat model for early NAFLD. Methods: Obese male Wistar rats (high-fat diet (HFD)-induced) were randomized into the following treatment groups: RYGB, sham-operation (sham), liraglutide (0.4 mg/kg/day), PYY\(_{3-36}\) (0.1 mg/kg/day), liraglutide+PYY\(_{3-36}\), and saline. After an observation period of 4 weeks, liver samples were histologically evaluated, ELISAs and RNA sequencing + RT-qPCRs were performed. Results: RYGB and liraglutide+PYY\(_{3-36}\) induced a similar body weight loss and, compared to sham/saline, marked histological improvements with significantly less steatosis. However, only RYGB induced significant metabolic improvements (e.g., adiponectin/leptin ratio 18.8 ± 11.8 vs. 2.4 ± 1.2 in liraglutide+PYY\(_{3-36}\)- or 1.4 ± 0.9 in sham-treated rats). Furthermore, RNA sequencing revealed a high number of differentially regulated genes in RYGB treated animals only. Conclusions: The combination therapy of liraglutide+PYY\(_{3-36}\) partly mimics the positive effects of RYGB on weight reduction and on hepatic steatosis, while its effects on metabolic function lack behind RYGB.
Adjuvant platinum-based chemotherapy in radically resected adrenocortical carcinoma: a cohort study
(2021)
Background
After radical resection, patients with adrenocortical carcinoma (ACC) frequently experience recurrence and, therefore, effective adjuvant treatment is urgently needed. The aim of the study was to investigate the role of adjuvant platinum-based therapy.
Methods
In this retrospective multicentre cohort study, we identified patients treated with adjuvant platinum-based chemotherapy after radical resection and compared them with patients without adjuvant chemotherapy. Recurrence-free and overall survival (RFS/OS) were investigated in a matched group analysis and by applying a propensity score matching using the full control cohort (n = 268). For both approaches, we accounted for immortal time bias.
Results
Of the 31 patients in the platinum cohort (R0 n = 25, RX n = 4, R1 n = 2; ENSAT Stage II n = 11, III n = 16, IV n = 4, median Ki67 30%, mitotane n = 28), 14 experienced recurrence compared to 29 of 31 matched controls (median RFS after the landmark at 3 months 17.3 vs. 7.3 months; adjusted HR 0.19 (95% CI 0.09-0.42; P < 0.001). Using propensity score matching, the HR for RFS was 0.45 (0.29-0.89, P = 0.021) and for OS 0.25 (0.09-0.69; P = 0.007).
Conclusions
Our study provides the first evidence that adjuvant platinum-based chemotherapy may be associated with prolonged recurrence-free and overall survival in patients with ACC and a very high risk for recurrence.
Background
Prostate cancer (PCa) is the most frequent cancer in men. The prognosis of PCa is heterogeneous with many clinically indolent tumors and rare highly aggressive cases. Reliable tissue markers of prognosis are lacking. Active cholesteryl ester synthesis has been associated with prostate cancer aggressiveness. Sterol-O-Acyl transferases (SOAT) 1 and 2 catalyze cholesterol esterification in humans.
Objective
To investigate the value of SOAT1 and SOAT2 tissue expression as prognostic markers in high risk PCa.
Patients and Methods
Formalin-fixed paraffin-embedded tissue samples from 305 high risk PCa cases treated with radical prostatectomy were analyzed for SOAT1 and SOAT2 protein expression by semi-quantitative immunohistochemistry. The Kaplan-Meier method and Cox proportional hazards modeling were used to compare outcome.
Main Outcome Measure
Biochemical recurrence (BCR) free survival.
Results
SOAT1 expression was high in 73 (25%) and low in 219 (75%; not evaluable: 13) tumors. SOAT2 was highly expressed in 40 (14%) and at low levels in 249 (86%) samples (not evaluable: 16). By Kaplan-Meier analysis, we found significantly shorter median BCR free survival of 93 months (95% confidence interval 23.6-123.1) in patients with high SOAT1 vs. 134 months (112.6-220.2, Log-rank p < 0.001) with low SOAT1. SOAT2 expression was not significantly associated with BCR. After adjustment for age, preoperative PSA, tumor stage, Gleason score, resection status, lymph node involvement and year of surgery, high SOAT1 but not SOAT2 expression was associated with shorter BCR free survival with a hazard ratio of 2.40 (95% CI 1.57-3.68, p < 0.001). Time to clinical recurrence and overall survival were not significantly associated with SOAT1 and SOAT2 expression CONCLUSIONS: SOAT1 expression is strongly associated with BCR free survival alone and after multivariable adjustment in high risk PCa. SOAT1 may serve as a histologic marker of prognosis and holds promise as a future treatment target.
Adrenocortical carcinoma (ACC) is a rare, aggressive cancer with still partially unknown pathogenesis, heterogenous clinical behaviour and no effective treatment for advanced stages. Therefore, there is an urgent clinical unmet need for better prognostication strategies, innovative therapies and significant improvement of the management of the individual patients. In this review, we summarize available studies on molecular prognostic markers and markers predictive of response to standard therapies as well as newly proposed drug targets in sporadic ACC. We include in vitro studies and available clinical trials, focusing on alterations at the DNA, RNA and epigenetic levels. We also discuss the potential of biomarkers to be implemented in a clinical routine workflow for improved ACC patient care.
A relevant issue on the treatment of adrenocortical carcinoma (ACC) concerns the optimal duration of adjuvant mitotane treatment. We tried to address this question, assessing whether a correlation exists between the duration of adjuvant mitotane treatment and recurrence-free survival (RFS) of patients with ACC. We conducted a multicenter retrospective analysis on 154 ACC patients treated for ≥12 months with adjuvant mitotane after radical surgery and who were free of disease at the mitotane stop. During a median follow-up of 38 months, 19 patients (12.3%) experienced recurrence. We calculated the RFS after mitotane (RFSAM), from the landmark time-point of mitotane discontinuation, to overcome immortal time bias. We found a wide variability in the duration of adjuvant mitotane treatment among different centers and also among patients cared for at the same center, reflecting heterogeneous practice. We did not find any survival advantage in patients treated for longer than 24 months. Moreover, the relationship between treatment duration and the frequency of ACC recurrence was not linear after stratifying our patients in tertiles of length of adjuvant treatment. In conclusion, the present findings do not support the concept that extending adjuvant mitotane treatment over two years is beneficial for ACC patients with low to moderate risk of recurrence.
The first description of neuromyelitis optica by Eugène Devic and Fernand Gault dates back to the 19th century, but only the discovery of aquaporin-4 autoantibodies in a major subset of affected patients in 2004 led to a fundamentally revised disease concept: Neuromyelits optica spectrum disorders (NMOSD) are now considered autoantibody-mediated autoimmune diseases, bringing the pivotal pathogenetic role of B cells and plasma cells into focus. Not long ago, there was no approved medication for this deleterious disease and off-label therapies were the only treatment options for affected patients. Within the last years, there has been a tremendous development of novel therapies with diverse treatment strategies: immunosuppression, B cell depletion, complement factor antagonism and interleukin-6 receptor blockage were shown to be effective and promising therapeutic interventions. This has led to the long-expected official approval of eculizumab in 2019 and inebilizumab in 2020. In this article, we review current pathogenetic concepts in NMOSD with a focus on the role of B cells and autoantibodies as major contributors to the propagation of these diseases. Lastly, by highlighting promising experimental and future treatment options, we aim to round up the current state of knowledge on the therapeutic arsenal in NMOSD.
Patients affected by gastroenteropancreatic–neuroendocrine tumors (GEP–NETs) have an increased risk of developing osteopenia and osteoporosis, as several factors impact on bone metabolism in these patients. In fact, besides the direct effect of bone metastasis, bone health can be affected by hormone hypersecretion (including serotonin, cortisol, and parathyroid hormone-related protein), specific microRNAs, nutritional status (which in turn could be affected by medical and surgical treatments), and vitamin D deficiency. In patients with multiple endocrine neoplasia type 1 (MEN1), a hereditary syndrome associated with NET occurrence, bone damage may carry other consequences. Osteoporosis may negatively impact on the quality of life of these patients and can increment the cost of medical care since these patients usually live with their disease for a long time. However, recommendations suggesting screening to assess bone health in GEP–NET patients are missing. The aim of this review is to critically analyze evidence on the mechanisms that could have a potential impact on bone health in patients affected by GEP–NET, focusing on vitamin D and its role in GEP–NET, as well as on factors associated with MEN1 that could have an impact on bone homeostasis.