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Thalidomid als Therapieoption beim fortgeschrittenen Nebennierenkarzinom: Eine retrospektive Studie
Das adrenokortikale Karzinom (ACC) ist ein seltener Tumor mit einer schlechten Prognose. Im fortgeschrittenen Stadium gelten Mitotane und zytotoxische Chemotherapien als Standardtherapie, mit denen allerdings nur kurzzeitig eine Tumorkontrolle erreicht werden kann. Daher machte Thalidomid Hoffnung auf eine mögliche ´Rettungs´-Therapie.
Im Rahmen dieser retrospektiven Studie sollte der Nutzen und die Tolerabilität von Thalidomid beim fortgeschrittenen Nebennierenkarzinom untersucht werden. Insgesamt konnten 15 Patienten aus dem deutschen Nebennnierenkarzinomregister herausgefiltert werden, die den Einschlusskriterien entsprachen und Thalidomid als off-label erhalten haben.
Als Endpunkt wurden das progressionsfreie Überleben, ausgewertet geblinded gemäß RECIST 1.1., und das Gesamtüberleben festgelegt.
Alle 15 Patienten (7 Männer; medianes Alter 48,9 (Range 34,4 – 69,0) Jahre) waren bereits mit bis zu sechs systemischen Therapien vorbehandelt. Thalidomid wurde in einer Dosierung gemäß Verträglichkeit verabreicht (mediane Startdosis 100 mg/d) und das Restaging erfolgte alle 12 Wochen, das Erste im Median nach 10,9 Wochen.
Das progressionfreie Überleben lag im Median bei 11,1 Wochen (Range 4,4 – 34,4 Wochen), das Gesamtüberleben lag im Median bei 34,4 Wochen (Range 5,1 – 111,1 Wochen).
Während der erste Patient, der eine Krankheitsstabilisierung erfahren hat, die Behandlung aufgrund von Epistaxis und Diarrhoe Grad I nach 22,3 Wochen abbrach, zeigte der zweite Patient nach 34,4 Wochen weiterhin eine Krankheitsstabilisierung, obwohl er unter den vorangegangenen vier zytotoxischen Therapien progredient war.
Unter Thalidomid wurden nur geringgradige bis mäßige Nebenwirkungen beobachtet (hauptsächlich Fatigue und gastrointestinale Nebenwirkungen).
Schlussfolgerung: Thalidomid ist ein gut verträgliches Medikament, das nur bei einer Minderheit zahlreich vortherapierter Patienten zu einer Krankheitsstabilisierung führte.
Background: Accurate preoperative assessment of the aortic annulus dimension is crucial for successful transcatheter aortic valve implantation (TAVI). In this study we examined the accuracy of a novel method using two-dimensional transesophageal echocardiography (2D-TEE) for measurement of the aortic annulus.
Methods: We evaluated the theoretical impact of the measurement of the annulus diameter and area using the circumcircle of a triangle method on the decision to perform the procedure and choice of the prosthesis size. Results: Sixty-three consecutive patients were scheduled for TAVI. Mean age was 82 +/- 4 years, and 25 patients (55.6 %) were female. Mean aortic annulus diameter was 20.3 +/- 2.2 mm assessed by TEE on the mid-esophageal long-axis view and 23.9 +/- 2.3 mm using CT (p < 0.001). There was a tendency for the TEE derived areas using the new method to be higher (p < 0.001). The TEE measurements were on average 42.33 mm(2) higher than the CT measurements without an evidence of a systematic over-or under-sizing (p = 1.00). Agreement between TEE and CT chosen valve sizes was good overall (kappa = 0.67 and weighted kappa = 0.71). For patients who turned out to have no AR, the two methods agreed in 84.6 % of patients.
Conclusions: CT remanis the gold standard in sizing of the aortic valve annulus. Nevertheless, sizing of the aortic valve annulus using TEE derived area may be helpful. The impact of integration of this method in the algorithm of aortic annulus sizing on the outcome of patients undergoing TAVI should be examined in future studies.
Mineralocorticoid receptor (MR) inactivation in mice results in early postnatal lethality. Therefore we generated mice in which MR expression can be silenced during adulthood by administration of doxycycline (Dox). Using a lentiviral approach, we obtained two lines of transgenic mice harboring a construct that allows for regulatable MR inactivation by RNAi and concomitant expression of eGFP. MR mRNA levels in heart and kidney of inducible MR knock-down mice were unaltered in the absence of Dox, confirming the tightness of the system. In contrast, two weeks after Dox administration MR expression was significantly diminished in a variety of tissues. In the kidney, this resulted in lower mRNA levels of selected target genes, which was accompanied by strongly increased serum aldosterone and plasma renin levels as well as by elevated sodium excretion. In the healthy heart, gene expression and the amount of collagen were unchanged despite MR levels being significantly reduced. After transverse aortic constriction, however, cardiac hypertrophy and progressive heart failure were attenuated by MR silencing, fibrosis was unaffected and mRNA levels of a subset of genes reduced. Taken together, we believe that this mouse model is a useful tool to investigate the role of the MR in pathophysiological processes.
Background: Nontraumatic osteonecrosis of the femoral head (NONFH) is a debilitating disease that represents a significant financial burden for both individuals and healthcare systems. Despite its significance, however, its prevalence in the Chinese general population remains unknown. This study aimed to investigate the prevalence of NONFH and its associated risk factors in the Chinese population.
Methods: A nationally representative survey of 30,030 respondents was undertaken from June 2012 to August 2013. All participants underwent a questionnaire investigation, physical examination of hip, and bilateral hip joint X-ray and/or magnetic resonance imaging examination. Blood samples were taken after overnight fasting to test serum total cholesterol, triglyceride, and high-density lipoprotein (HDL) and low-density lipoprotein (LDL) levels. We then used multivariate logistic regression analysis to investigate the associations between various metabolic, demographic, and lifestyle-related variables and NONFH.
Results: NONFH was diagnosed in 218 subjects (0.725%) and the estimated NONFH cases were 8.12 million among Chinese people aged 15 years and over. The prevalence of NONFH was significantly higher in males than in females (1.02% vs. 0.51%, \(\chi^2\) = 24.997, P < 0.001). Among NONFH patients, North residents were subjected to higher prevalence of NONFH than that of South residents (0.85% vs. 0.61%, \(\chi^2\) = 5.847, P = 0.016). Our multivariate regression analysis showed that high blood levels of triglycerides, total cholesterol, LDL-cholesterol, and non-HDL-cholesterol, male, urban residence, family history of osteonecrosis of the femoral head, heavy smoking, alcohol abuse and glucocorticoid intake, overweight, and obesity were all significantly associated with an increased risk of NONFH.
Conclusions: Our findings highlight that NONFH is a significant public health challenge in China and underscore the need for policy measures on the national level. Furthermore, NONFH shares a number of risk factors with atherosclerosis.
Tyrosinkinaseinhibitoren nehmen in der modernen Onkologie einen wachsenden Stellenwert ein. Sunitinib wirkt als Multityrosinkinaseinhibitor einerseits antiangiogenetisch, andererseits auch direkt antiproliferativ auf Tumorzellen. Im Tierversuch sind unter Sunitinib adrenotoxische Wirkungen beschrieben. Für das Nebennierenkarzinom, eine sehr seltene Tumorerkrankung mit schlechter Prognose, werden dringend neue Therapieoptionen benötigt. In dieser Arbeit wurde der Effekt von Sunitinib auf die Proliferation von Nebennierenkarzinomzellen in vitro und auf deren Steroidbiosynthese untersucht.
Es konnte gezeigt werden, dass Sunitinib dosisabhängig auf die beiden Nebennierenkarzinomzelllinien NCI-h295(R) und SW-13 antiproliferativ wirkt (SW-13: unter 0,1 µM Sunitinib 96 ± 7 %; 1 µM 90 ± 9 %*; 5 µM 62 ± 6 %*, Kontrollen 100 ± 9 %, ab 1 µM p<0,05). Steroidanalysen in den Zellkulturüberständen von NCI-h295-Zellen mittels Isotopenverdünnungs-/Gaschromatographie-Massenspektrometrie belegen eine Abnahme der Cortisolsekretion (1 μM 90,1 ± 1,5 %*, 5 μM 57,2 ± 0,3 %*, Kontrollen 100 ± 2,4 %), während bestimmte Vorläuferhormone akkumulieren. Der beobachtete Anstieg der Quotienten von 17-OH-Pregnenolon zu 17-OH-Progesteron und DHEA zu Androstendion belegt eine partielle Hemmung der Steroidsynthese auf Ebene der 3ß-Hydroxysteroiddehydrogenase (HSD3B2). Nachdem eine direkte Hemmung des Enzyms HSD3B2 mittels Hefe-Mikrosomen-Assay ausgeschlossen werden konnte, bestätigte sich auf RNA- mittels Real-Time-PCR und Proteinebene mittels Western Blot eine dosisabhängige Hemmung der Transkription und Translation des Enzyms (mRNA: 1 μM 47 ± 7 %*; 5 μM 33 ± 7 %*; 10 μM 27 ± 6 %*; Protein: 1 μM 82 ± 8 %; 5 μM 63 ± 8 %*; 10 μM 55 ± 9 %*). Auch für CYP11B1 zeigte sich eine dosisabhängige Transkriptionshemmung durch Sunitinib, andere Enzyme wie CYP11A1 dagegen werden nicht beeinflusst.
Wenn sich diese in vitro Effekte bei Patienten unter Sunitinib-Therapie bestätigen sollten, könnte es bei einzelnen Patienten zu einer klinisch relevanten Nebenniereninsuffizienz kommen. Eine eindeutige Wirksamkeit von Sunitinib als Therapieoption beim Nebennierenkarzinom konnte im Rahmen der SIRAC-Studie nicht bestätigt werden. Hier ist jedoch anzumerken, dass wahrscheinlich eine gravierende Medikamenteninteraktion mit Mitotane zu einer Reduktion des Effekts von Sunitinib beigetragen hat.
Ziel:
In dieser Arbeit wurden die Auswirkung der milden und moderaten Hyponatriämie (125-133 mmol/l) auf das Befinden der betroffenen Patienten im Hinblick auf neurokognitive Funktion und klinische Symptomatik untersucht. In mehreren Studien wurde über eine erhöhte Sturzneigung sowie eine Minderung der Konzentrationsfähigkeit bei einem nur leicht erniedrigten Serumnatriumspiegel berichtet.
Methoden:
Die Testungen fanden im Longitudinalvergleich mit jeweils den gleichen Patienten vor und nach Anhebung des Serumnatriumspiegels statt, sodass bis auf das Serumnatrium keine Beeinflussung gegeben war. Die Patienten waren im Durchschnitt 61 Jahre alt und besaßen einen durchschnittlichen Serumnatriumwert von 128,7 mmol/l; die Ätiologie der Hyponatriämie war heterogen (normovolämische und hypervolämische Hyponatriämie).
Um die Aufmerksamkeitsdefizite aufzudecken, fanden Testungen der Patienten (n=16) mit vier verschiedenen Untertests der TAP, einem Standardprogramm der Psychologie, statt: „Alertness“ mit „phasischer Alertness“, „Daueraufmerksamkeit“, „Geteilte Aufmerksamkeit“ und „Go/Nogo“. Um die Konzentrationsfähigkeit gegen eine Störung wie Stress beurteilen zu können, wurde die „Wiener Form A“, ein Subtyp des Wiener Testsystems verwendet, ein ebenfalls in der Psychologie genutzter Test (n=12).
Verwendet wurde außerdem ein selbst designter Fragebogen (n=18), der auf die in der Literatur berichteten Symptome einer leichten Hyponatriämie zugeschnitten war. Ein und dieselben Patienten wurden jeweils vor und nach Anhebung des Serumnatriumwertes getestet.
Ergebnisse:
Es zeigte sich, dass bei verschiedenen klinischen Symptomen wie Krämpfen (p= 0,018) und Gangunsicherheit (p= 0,092) signifikante Verbesserungen gefunden wurden. Auch bei dem unspezifischeren Symptom Müdigkeit (p= 0,04) konnte eine Tendenz zur Besserung nach Anhebung des Serumnatriumspiegels verzeichnet werden. In den Aufmerksamkeitstests war – im Gegensatz zu einer Vorstudie, in der ebenfalls die TAP zur Beurteilung der neurokognitiven Funktion herangezogen worden war - weder die „Alertness“, also die Reaktionsgeschwindigkeit, noch die Reaktions-Selektionsleistung beim Test „Go/Nogo“ signifikant alteriert. Auch die „Daueraufmerksamkeit“ und „Geteilte Aufmerksamkeit“ wurden nicht signifikant beeinflusst.
Ebenso wenig wie die verschiedenen Aufmerksamkeitfunktionen beeinflusst werden, ist die Reaktionsfähigkeit unter Stress wesentlich herabgesetzt. Denn der Stressreiz im Test „Wiener Form A“ führte bei den Patienten in Hyponatriämie zu keinem signifikant schlechteren Ergebnis als der gleiche Test mit denselben Patienten bei angehobenem Serumnatriumwert.
Zusammefassung:
Zusammenfassend kann aus der vorliegenden Studie gefolgert werden, dass eine milde und moderate Hyponatriämie keine Auswirkungen auf die neurokognitive Funktion hat und insofern die Sturzneigung bei älteren Patienten wohl nicht beeinflusst. Bei bestimmten klinischen Symptomen konnte eine teilweise signifikante Verbesserung verzeichnet werden, jedoch gibt es zu viele mögliche Einflussfaktoren, als dass man eine endgültige Aussage treffen könnte. Die Ergebnisse aus Vorstudien müssen in Frage gestellt werden. Um den tatsächlichen Einfluss einer milden und moderaten Hyponatriämie auf die Aufmerksamkeitsfunktion zu klären sowie die Beeinträchtigung bei bestimmten klinischen Symptomen beweisen zu können, bedarf es weiterer Studien in randomisiertem Doppelblinddesign mit höherer Patientenzahl.
Wir haben 215 Typ 2-Diabetiker mit begleitender chronischer Nierenerkrankung, die noch keine Dialysebehandlung erhalten hatten, über maximal 7 Jahre nachverfolgt. Dabei konnten von allen Studienteilnehmern Follow-up-Daten erhoben werden. Ziel dieser Untersuchung war es, einen Zusammenhang zwischen erhöhten endogenen EPO-Spiegeln im Blut und einer erhöhten Mortalität zu eruieren. Diesen Zusammenhang konnten wir sowohl in der univariaten Analyse als auch nach Korrektur für etablierte Risikofaktoren wie Alter, vorangegangene kardiovaskuläre Ereignisse, erhöhte CRP-Spiegel und niedrige Albumin-Blutwerte zeigen. Somit ist ein erhöhter endogener EPO-Spiegel ein unabhängiger Risikofaktor für die Mortalität. Unsere Untersuchungen zeigen sogar, dass eine einzelne Messung des EPO-Spiegels einen höheren prädiktiven Wert bezüglich des Risikos zu versterben besitzt als eine einzelne CRP-Messung.
Background:
Accurate preoperative assessment of the aortic annulus dimension is crucial for successful transcatheter aortic valve implantation (TAVI). In this study we validated a new method using two-dimensional transesophageal echocardiography (2D-TEE) for measurement of the aortic annulus prior to TAVI.
Methods:
We analysed 124 patients who underwent successful TAVI using a self-expandable prosthesis, divided equally into two groups; in the study group we used the cross sectional short axis 2D-TEE for measurement of the aortic annulus and in the control group we used the long axis 2D-TEE.
Results:
Both groups were comparable regarding the clinical parameters. On the other hand, patients in the study group had less left ventricular ejection fraction (38.9 % versus 45.6 %, p = 0.01). The aortic valve annulus was, although not statistically significant, smaller in the study group (21.58 versus 23.28 mm, p = 0.25). Post procedural quantification of the aortic regurgitation revealed that only one patient in both groups had severe aortic regurgitation (AR), in this patient the valve was implanted deep. The incidence of significant AR was higher in the control group (29.0 % versus 12.9 %, p = 0.027).
Conclusions:
Sizing of the aortic valve annulus using cross-sectional 2D-TEE offers a safe and plausible method for patients undergoing TAVI using the self-expandable prosthesis and is significantly superior to using long axis 2D-TEE.
Background
In spite of several research studies help to describe the heart in Fabry disease (FD), the cardiomyopathy is not entirely understood. In addition, the impact of blood pressure and alterations in geometry have not been systematically evaluated.
Methods
In 74 FD patients (mean age 36±12 years; 45 females) the extent of myocardial fibrosis and its progression were quantified using cardiac magnetic-resonance-imaging with late enhancement technique (LE). Results were compared to standard echocardiography complemented by 2D-speckle-tracking, 3D-sphericity-index (SI) and standardized blood pressure measurement. At baseline, no patient received enzyme replacement therapy (ERT). After 51±24 months, a follow-up examination was performed.
Results
Systolic blood pressure (SBP) was higher in patients with vs. without LE: 123±17 mmHg vs. 115±13 mmHg; P = 0.04. A positive correlation was found between SI and the amount of LE-positive myocardium (r = 0.51; P<0.001) indicating an association of higher SI in more advanced stages of the cardiomyopathy. SI at baseline was positively associated with the increase of LE-positive myocardium during follow-up. The highest SBP (125±19 mmHg) and also the highest SI (0.32±0.05) was found in the subgroup with a rapidly increasing LE (ie, ≥0.2% per year; n = 16; P = 0.04). Multivariate logistic regression analysis including SI, SBP, EF, left ventricular volumes, wall thickness and NT-proBNP adjusted for age and sex showed SI as the most powerful parameter to detect rapid progression of LE (AUC = 0.785; P<0.05).
Conclusions
LV geometry as assessed by the sphericity index is altered in relation to the stage of the Fabry cardiomyopathy. Although patients with FD are not hypertensive, the SBP has a clear impact on the progression of the cardiomyopathy.
Background
This article summarizes the 2012 European Renal Association—European Dialysis and Transplant Association Registry Annual Report (available at www.era-edta-reg.org) with a specific focus on older patients (defined as ≥65 years).
Methods
Data provided by 45 national or regional renal registries in 30 countries in Europe and bordering the Mediterranean Sea were used. Individual patient level data were received from 31 renal registries, whereas 14 renal registries contributed data in an aggregated form. The incidence, prevalence and survival probabilities of patients with end-stage renal disease (ESRD) receiving renal replacement therapy (RRT) and renal transplantation rates for 2012 are presented.
Results
In 2012, the overall unadjusted incidence rate of patients with ESRD receiving RRT was 109.6 per million population (pmp) (n = 69 035), ranging from 219.9 pmp in Portugal to 24.2 pmp in Montenegro. The proportion of incident patients ≥75 years varied from 15 to 44% between countries. The overall unadjusted prevalence on 31 December 2012 was 716.7 pmp (n = 451 270), ranging from 1670.2 pmp in Portugal to 146.7 pmp in the Ukraine. The proportion of prevalent patients ≥75 years varied from 11 to 32% between countries. The overall renal transplantation rate in 2012 was 28.3 pmp (n = 15 673), with the highest rate seen in the Spanish region of Catalonia. The proportion of patients ≥65 years receiving a transplant ranged from 0 to 35%. Five-year adjusted survival for all RRT patients was 59.7% (95% confidence interval, CI: 59.3–60.0) which fell to 39.3% (95% CI: 38.7–39.9) in patients 65–74 years and 21.3% (95% CI: 20.8–21.9) in patients ≥75 years.
In post-dilution online haemodiafiltration (ol-HDF), a relationship has been demonstrated between the magnitude of the convection volume and survival. However, to achieve high convection volumes (>22 L per session) detailed notion of its determining factors is highly desirable. This manuscript summarizes practical problems and pitfalls that were encountered during the quest for high convection volumes. Specifically, it addresses issues such as type of vascular access, needles, blood flow rate, recirculation, filtration fraction, anticoagulation and dialysers. Finally, five of the main HDF systems in Europe are briefly described as far as HDF prescription and optimization of the convection volume is concerned.
Background
In patients undergoing maintenance hemodialysis (HD), increased levels of circulating fibroblast growth factor-23 (FGF-23) are independently associated with cardiovascular events and mortality. Interventional strategies aiming to reduce levels of FGF-23 in HD patients are of particular interest. The purpose of the current study was to compare the impact of high-flux versus low-flux HD on circulating FGF-23 levels.
Methods
We conducted a post-hoc analysis of the MINOXIS study, including 127 dialysis patients randomized to low-flux (n = 62) and high-flux (n = 65) HD for 52 weeks. Patients with valid measures for FGF-23 investigated baseline and after 52 weeks were included.
Results
Compared to baseline, a significant increase in FGF-23 levels after one year of low-flux HD was observed (Delta plasma FGF-23: +4026 RU/ml; p < 0.001). In contrast, FGF-23 levels remained stable in the high flux group (Delta plasma FGF-23: +373 RU/ml, p = 0.70). The adjusted difference of the absolute change in FGF-23 levels between the two treatment groups was statistically significant (p < 0.01).
Conclusions
Over a period of 12 months, high-flux HD was associated with stable FGF-23 levels, whereas the low-flux HD group showed an increase of FGF-23. However, the implications of the different FGF 23 time-trends in patients on high flux dialysis, as compared to the control group, remain to be explored in specifically designed clinical trials.
Background and Aims
Chronic kidney disease (CKD) is a risk factor for development and progression of heart failure (HF). CKD and HF share common risk factors, but few data exist on the prevalence, signs and symptoms as well as correlates of HF in populations with CKD of moderate severity. We therefore aimed to examine the prevalence and correlates of HF in the German Chronic Kidney Disease (GCKD) study, a large observational prospective study.
Methods and Results
We analyzed data from 5,015 GCKD patients aged 18-74 years with an estimated glomerular filtration rate (eGFR) of <60 ml/min/1.73m\(^{2}\) or with an eGFR >= 60 and overt proteinuria (>500 mg/d). We evaluated a definition of HF based on the Gothenburg score, a clinical HF score used in epidemiological studies (Gothenburg HF), and self-reported HF. Factors associated with HF were identified using multivariable adjusted logistic regression. The prevalence of Gothenburg HF was 43% (ranging from 24% in those with eGFR >90 to 59% in those with eGFR<30 ml/min/1.73m2). The corresponding estimate for self-reported HF was 18% (range 5%-24%). Lower eGFR was significantly and independently associated with the Gothenburg definition of HF (p-trend <0.001). Additional significantly associated correlates included older age, female gender, higher BMI, hypertension, diabetes mellitus, valvular heart disease, anemia, sleep apnea, and lower educational status.
Conclusions
The burden of self-reported and Gothenburg HF among patients with CKD is high. The proportion of patients who meet the criteria for Gothenburg HF in a European cohort of patients with moderate CKD is more than twice as high as the prevalence of self-reported HF. However, because of the shared signs, symptoms and medications of HF and CKD, the Gothenburg score cannot be used to reliably define HF in CKD patients. Our results emphasize the need for early screening for HF in patients with CKD.
Background:
Evidence that home telemonitoring for patients with chronic heart failure (CHF) offers clinical benefit over usual care is controversial as is evidence of a health economic advantage.
Methods:
Between January 2010 and June 2013, patients with a confirmed diagnosis of CHF were enrolled and randomly assigned to 2 study groups comprising usual care with and without an interactive bi-directional remote monitoring system (Motiva\(^{®}\)). The primary endpoint in CardioBBEAT is the Incremental Cost-Effectiveness Ratio (ICER) established by the groups' difference in total cost and in the combined clinical endpoint "days alive and not in hospital nor inpatient care per potential days in study" within the follow-up of 12 months.
Results:
A total of 621 predominantly male patients were enrolled, whereof 302 patients were assigned to the intervention group and 319 to the control group. Ischemic cardiomyopathy was the leading cause of heart failure. Despite randomization, subjects of the control group were more often in NYHA functional class III-IV, and exhibited peripheral edema and renal dysfunction more often. Additionally, the control and intervention groups differed in heart rhythm disorders. No differences existed regarding risk factor profile, comorbidities, echocardiographic parameters, especially left ventricular and diastolic diameter and ejection fraction, as well as functional test results, medication and quality of life. While the observed baseline differences may well be a play of chance, they are of clinical relevance. Therefore, the statistical analysis plan was extended to include adjusted analyses with respect to the baseline imbalances.
Conclusions:
CardioBBEAT provides prospective outcome data on both, clinical and health economic impact of home telemonitoring in CHF. The study differs by the use of a high evidence level randomized controlled trial (RCT) design along with actual cost data obtained from health insurance companies. Its results are conducive to informed political and economic decision-making with regard to home telemonitoring solutions as an option for health care. Overall, it contributes to developing advanced health economic evaluation instruments to be deployed within the specific context of the German Health Care System.