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Usability of a mHealth solution using speech recognition for point-of-care diagnostic management
(2023)
The administrative burden for physicians in the hospital can affect the quality of patient care. The Service Center Medical Informatics (SMI) of the University Hospital Würzburg developed and implemented the smartphone-based mobile application (MA) ukw.mobile1 that uses speech recognition for the point-of-care ordering of radiological examinations. The aim of this study was to examine the usability of the MA workflow for the point-of-care ordering of radiological examinations. All physicians at the Department of Trauma and Plastic Surgery at the University Hospital Würzburg, Germany, were asked to participate in a survey including the short version of the User Experience Questionnaire (UEQ-S) and the Unified Theory of Acceptance and Use of Technology (UTAUT). For the analysis of the different domains of user experience (overall attractiveness, pragmatic quality and hedonic quality), we used a two-sided dependent sample t-test. For the determinants of the acceptance model, we employed regression analysis. Twenty-one of 30 physicians (mean age 34 ± 8 years, 62% male) completed the questionnaire. Compared to the conventional desktop application (DA) workflow, the new MA workflow showed superior overall attractiveness (mean difference 2.15 ± 1.33), pragmatic quality (mean difference 1.90 ± 1.16), and hedonic quality (mean difference 2.41 ± 1.62; all p < .001). The user acceptance measured by the UTAUT (mean 4.49 ± 0.41; min. 1, max. 5) was also high. Performance expectancy (beta = 0.57, p = .02) and effort expectancy (beta = 0.36, p = .04) were identified as predictors of acceptance, the full predictive model explained 65.4% of its variance. Point-of-care mHealth solutions using innovative technology such as speech-recognition seem to address the users’ needs and to offer higher usability in comparison to conventional technology. Implementation of user-centered mHealth innovations might therefore help to facilitate physicians’ daily work.
There has been a steady increase (annual percentage growth rate of 19.2%, average of 18.3 citations per document) in capsule endoscopy (CE) publications from a global, interdisciplinary research community on a growing range of CE applications over the last 20+ years. We here present the status of CE as a field of research, tracing its evolution over time and providing insight into its potential for diagnostics, prevention and treatment of gastrointestinal (GI) tract diseases. To portray the development of the CE research landscape in the 2000–2021 time span, we analyzed 5764 scientific publications. Analyses were performed using the R language and environment for statistical computing and graphics and VOSviewer, a software developed for scientific literature analysis by scientometricians. The aim of this paper is to provide a wide comprehensive analysis of the trends in CE publications. We thus performed subgroup analysis on the selected papers, including indications, annual percentage growth rate, average citations per document, most publications from research areas/interdisciplinary field of the articles, geography, collaboration networks through institutions, specific clinical keywords and device type. The firm increase in CE publications over the last two decades highlights the overall strength of the technology in GI applications. Furthermore, the introduction to the field of artificial intelligence (AI) tools has been promoting a range of technological advances that keep on affecting the diagnostic potential of CE.
Nachrichten aus der Julius-Maximilian-Universität Würzburg
Ziel der Doktorarbeit war die Implementierung eines Herzinfarktnetzes im ländlichen Raum mit Hilfe der FITT-STEMI-Studie und damit die Optimierung der Abläufe der Behandlungen und Verbesserung der Prognose der Patienten. Die Ergebnisse wurden quartalsweise mit den beteiligten Berufsgruppen wie Notärzten, Sanitätern, Personal der Intensivstation, den einweisenden Kliniken etc. besprochen und so ein Netzwerk aufgebaut. Dadurch konnte das Einzugsgebiet erweitert werden, die Primärtransporte nahmen von 54 auf 65 % und die telefonischen Infarktankündigungen von 43 auf 80 % zu, zudem konnte die door-to-catheter-Zeit bei Primärtransporten von 40 auf 23 min. gesenkt werden.
Besides caloric restriction, a diet rich in fruits and vegetables is believed to delay the ageing process thus providing a powerfull tool in preventive medicine. To investigate underlying interactions between food ingredients and genes simple models, such as the red flour beetle Tribolium castaneum, appear especially constructive. Here we show that 1 % of a grape seed extract containing 30 % of procyanidins, significantly increases the survival of T. castaneum at 42 °C when added to flour as a dietary source. The beneficial effects of grape seed extract could not be reproduced by supplementing flour with single catechins of which the oligomeric procyanidins consist. We identified previously stress resistance genes responsible for a survival extension by dietary ingredients and show here by the use of RNA-interference that a knockdown of transcripts encoding homologues of Nrf-2 or Jnk-1 block the effects of grape seed extract on survival. Interestingly, grape seed extract under knockdown of Foxo-1 caused a significant survival reduction, stressing the hormetic response as underlying the survival extension by the dietary interventions.
In conclusion, our studies provide evidence that a procyanidin-rich extract is able to extend the survival of the model organism T. castaneum. Catechin monomers, however, appear not to mediate the effects. The active ingredients, moreover, need the presence of stress resistance factors, and here especially of Foxo-1, in order to promote their preventive activities with regard to degenerations.
Osteoporose ist einer der häufigsten Knochenerkrankungen im fortschreitenden Alter und zählt, aufgrund der damit verbundenen hohen direkten und indirekten Behandlungskosten, zu einer der zehn wichtigsten volkswirtschaftlichen Krankheiten. Die Behandlung der Osteoporose ist langjährig und umfasst eine medikamentöse Therapie auf der Basis einer „knochengesunden“ Lebensweise hinsichtlich Ernährung und Bewegung. Im Rahmen von Untersuchungen zur Linderung von postmenopausalen Beschwerden, zeigte ein Extrakt der Pflanze Cimicifuga racemosa Potential zu osteoprotektiver Wirksamkeit und rückte somit in den Fokus für eine mögliche Anwendung in der Therapie und Prophylaxe von Osteoporose. Das Ziel der vorliegenden Arbeit war es daher, in enger Zusammenarbeit mit der Bionorica SE, welche für die Aufreinigung und Fraktionierung des Pflanzenextraktes zuständig war, und mit der Arbeitsgruppe um Prof. Wuttke, welche parallele Rattenstudien durchführte, Methoden anzuwenden, mit denen osteoprotektive Wirksamkeiten nachgewiesen und auf einzelne Fraktionen des Extraktes limitiert werden können. ...
Welcome to the inaugural meeting of the International Society for Nutritional Psychiatry Research (ISNPR).
It is a great pleasure to have the opportunity to join with colleagues working in this new and exciting field of research. Although there has long been interest in the links between nutritional deficiencies and psychiatric illness, as well as interest in the role of food allergies in such illnesses, the last five years has seen a significant and notable growth in this nascent field of research, with an accompanying impact on the viewpoints and practices of scientists and clinicians working in mental health.
In my particular field of interest – that of the role of overall dietary quality in the common mental disorders, depression and anxiety - there has been an exponential growth in the literature since the end of 2009. It is exciting and gratifying to see concordant results from across the globe, in young children and adolescents through to older adults, and from countries as diverse as Norway and Taiwan.
The study of the efficacy of nutritional interventions in psychiatric illness is also developing rapidly, with high quality randomised controlled trials now being conducted in multiple settings and with outcomes that include cognition as well as depression, bipolar disorder, schizophrenia and anxiety disorders. Another important development in this field is the rapidly growing recognition that nutrition is of central importance in the risk for cognitive decline and dementia. As this new recognition filters through to clinical researchers, I look forward to seeing new interventions in this area.
Another area of research with significant interest and activity grows from the understanding of the centrality of physical health to mental health and vice versa. There are many nutrition researchers, dietitians and other health practitioners working to address the physical health of patients with mental illness; acting on the recognition that physical and mental health are closely related and mutually reinforcing.
There is no doubt that the formation of an international society is timely; we now have the opportunity to join forces to share knowledge and build important collaborations. Building capacity in this field by sharing our knowledge with students and early career researchers will be another important activity of our society, as will building the credibility of nutritional psychiatry research through a clear understanding and implementation of best practice scientific methodology.
I welcome each of you to extend the invitation to join our new ISNPR to colleagues and students in your networks. I would also encourage you to contribute to the discussions and sharing of knowledge by contributing short pieces to our newsletter, which will be disseminated by the end of this year. For those who are unable to attend this year’s meeting, we hope that 2014 may present a possibility for attendance.
Our aim is conduct our first Annual General Meeting before the end of July 2013 via teleconference and I welcome agenda items from those interested.
With very best wishes
Felice Jacka
President ISNPR
Medical history of obesity
(2013)
This paper contains the following sections, in approximate chronological order: Early years, Scientific research on energy metabolism, Clinical teaching, Evidence on health risks, Slow recognition of obesity in diabetes, Depression and war, some Obesity research continued in the 1950s and 1960s, New approaches to management, a Universal standard weight for height, Luxuskonsumption, Calories (incompletely) replaced by Joules, Food intakes of obese people, Genetics, unexpected Surge of obesity from 1980, Diabetes, Scarcity of effective, safe drugs for obesity, Leptin and Ghrelin stimulate basic research, Why has the obesity epidemic happened? What is the best weight-reducing diet? Bariatric surgery
Die Epithelzellen des renalen proximalen Tubulus resorbieren große Mengen an Wasser, Glucose und weiteren wertvollen Substanzen aus dem Primärharn, um deren Ausscheidung zu verhindern. Weiterhin sekretieren sie harnpflichtige Substanzen in den Primärharn und sind in der Lage, in die Zelle aufgenommene Substanzen enzymatisch umzusetzen. Diese Funktionen machen den renalen proximalen Tubulus zu einer wichtigen Einheit für die Nie-renfunktion. Sie führen aber auch zu einer hohen Empfindlichkeit gegenüber toxischen Effek-ten von Fremdstoffen. Daher ist ein In-vitro-Modell des renalen proximalen Tubulusepithels sowohl für die Erforschung physiologischer und pathologischer Mechanismen als auch zur Testung der Toxizität von Substanzen, insbesondere neuen Arzneimitteln, bedeutend. Ein weiteres Forschungsfeld, für das ein In-vitro-Gewebe von großem Nutzen wäre, ist die Ent-wicklung von bioartifiziellen Nierenersatzsystemen. Aufgrund Spezies-spezifischer Unterschiede, z.B. in der Expression von Transportproteinen und Enzymen, ist ein Modell mit humanen Zellen anzustreben. Bisher besteht jedoch ein Mangel an Modellen, die das renale proximale Tubulusepithel für die oben genannten An-wendungsbereiche adäquat abbilden. Das Ziel dieser Arbeit war deshalb der Aufbau eines humanen In-vitro-Modells des renalen proximalen Tubulus unter Verwendung von humanen Nierenzellen (human kidney-derived cells, hKDCs), die Eigenschaften renaler Vorläuferzellen aufweisen. In Kombination mit die-sen Zellen wurden verschiedene Kultursubstrate getestet. Dabei zeigte sich, dass die Zellen sowohl in Zellkulturplatten als auch auf Kollagen-Typ-I-beschichteten Insertmembranen mehrschichtig wachsen, ohne die typische Morphologie renaler proximaler Tubuluszellen auszubilden. In einem dreidimensionalen Kollagen-Typ-I-Hydrogel bildeten die hKDCs hin-gegen tubuläre bzw. zystäre Strukturen mit einer kubischen bis hochprismatischen Morpho-logie. Da für die oben erwähnten Anwendungsbereiche jedoch eine planare Zellschicht benö-tigt wird, erfolgte die Testung weiterer biologischer Matrices. Diese waren die Small intestinal submucosa (SIS) und das Biological vascularized scaffold (BioVaSc). Beide ließen sich aus porcinem Dünndarm herstellen, wobei bei der SIS die Mucosa sowie das Mesenterium ent-fernt wurden. Bei der BioVaSc handelt es sich um ein Darmsegment mit erhaltenem Ge-fäßsystem, dass zur Perfusion genutzt wird. Nach ihrer Kultur auf der SIS wiesen die hKDCs das typische Wachstum und die charakteris-tische Morphologie des renalen proximalen Tubulusepithels auf. Dazu gehören die Kontakt-hemmung, die das einschichtige Wachstum ermöglicht, die kubisch bis hochprismatische Morphologie sowie die Bildung eines Bürstensaums an der apikalen Zellmembran. Anhand einer Kollagen-Typ-IV- und einer Alcianblau-Färbung ließ sich die Bildung einer Basalmemb-ran an der Grenze zur SIS nachweisen. Bürstensaum- und Basalmembranbildung zeigten die zelluläre Polarisierung. Weiterhin waren typische Markerproteine renaler proximaler Tu-buluszellen wie N-Cadherin und Aquaporin-1 immunhistochemisch, zum Teil deutlich stärker als bei den Ausgangszellen, nachweisbar. Dies belegt einen positiven Einfluss der extrazellu-lären Matrixkomponenten der SIS auf die Ausbildung von Charakteristika des renalen proxi-malen Tubulusepithels. Die Albuminaufnahme als spezifische Funktion war ebenfalls nach-weisbar. Die molekularen Veränderungen der hKDCs während der Kultivierung auf der SIS ließen sich weiterhin mittels Raman-Spektroskopie bestätigen. Aufgrund der starken Interak-tion zwischen Tubulusepithel und umgebenden Kapillarnetzwerk wurde weiterhin die Co-Kultur mit Endothelzellen etabliert. Für den Vergleich der hKDCs mit einer etablierten humanen Zelllinie renaler proximaler Tu-buluszellen wurde die HK-2-Zelllinie verwendet. Mit dieser Zelllinie ließen sich die Ergebnisse der hKDCs jedoch nicht reproduzieren, was auf die fehlende Sensitivität der transformierten Zelllinie auf die Substrateigenschaften zurückzuführen ist. In der dynamischen Kultur mit der BioVaSc als Matrix waren ein inhomogenes Wachstum sowie eine variierende Markerexpression zu beobachten. Die ließ sich vor allem auf den starken Einfluss der Aussaatdichte sowie die Festigkeit der Matrix zurückführen. Bei einer erfolgreichen Optimierung der Kultur kann dieses Modell jedoch für komplexere Studien in der pharmakologischen Entwicklung nützlich sein. Mit der Kombination aus hKDCs und SIS ist es gelungen, eine einzelne, durchgängige Zell-schicht zu generieren, die wichtige Charakteristika des renalen proximalen Tubulusepithels aufweist. Weitere Untersuchungen sind nun nötig, um die Funktionalität des Modells weiter-gehend zu charakterisieren (z.B. der Transport von Substanzen und Sensitivität gegenüber toxischen Substanzen). Anschließend kann es für die spezifischen Anwendungen weiterentwickelt werden.
Critical illness like sepsis, shock, and intestinal bowel disease are one of the leading causes of morbidity and mortality in the US and around the world. At present, studies to define new therapeutic interventions that can protect tissues and cells against injury and attenuate inflammation are fields of intense investigation. While research over the past decade has clearly identified GLN as a vital stress substrate facilitating cellular survival following injury, the initiation steps in GLN’s cytoprotective molecular mechanism still remain elusive. Previously published work suggested that stabilization of ECM proteins and activation of ECM receptor osmosignaling may play a central role in the orchestration of many cellular pathways following stress. Thus, I hypothesized that preservation of ECM protein and EGFR levels as well as ECM receptor signaling play key roles in the molecular mechanisms underlying GLN’s protection against thermal injury in the intestine. I was able to confirm via Western blotting and by using silencing RNA against FN, Ntn-1, EGFR, and their negative controls, that GLN-mediated preservation of FN, Ntn-1, and EGFR levels is critical in GLN’s protection against hyperthermia in IEC-6 cells. By using a selective FN-Integrin interaction inhibitor GRGDSP, its negative control peptide GRGESP, and Src-kinase inhibitor PP2, I showed that FN-Integrin signaling and Src-kinase activation are essential in GLN-mediated protection in the intestine. This applied to EGFR signaling as demonstrated using the EGFR tyrosine kinase inhibitor AG1478. In addition to GRGDSP and AG1478, ERK1/2 inhibitors PD98059 and UO126 as well as the p38MAPK inhibitor SB203580 revealed that GLN is protective by activating ERK1/2 and dephosphorylating p38MAPK via FN-Integrin and EGFR signaling. However, GLN-mediated PI3-K/Akt/Hsp70 activation seems to occur independently of FN-Integrin and EGFR signaling as indicated by Western blots as well as experiments using the PI3-K inhibitor LY294002, GRGDSP, and AG1478. The results showed that GLN activates cell survival signaling pathways via integrins as well as EGFRs after hyperthermia. Moreover, I found that GLN-mediated preservation of FN expression after HS is regulated via PI3-K signaling. Whether GLN-mediated PI3-K signaling happens simultaneously to FN-Integrin and EGFR signaling or whether PI3-K signaling coordinates FN-Integrin and EGFR signaling needs to be investigated in future studies. Further, experiments with PD98059 and GRGDSP revealed that ERK1/2 assists in mediating transactivation of HSF-1 following HS. This leads to increases in Hsp70 expression via FN-Integrin signaling, which is known to attenuate apoptosis after thermal injury. Fluorescence microscopy results indicated that HS and GLN regulate cell are size changes and the morphology of F-actin via FN-Integrin signaling. Experiments using GRGDSP and GRGESP showed that GLN enhances cellular survival via FN-Integrin signaling in a manner that does not require increased intracellular GLN concentrations (as quantified using LC-MS/MS). In summary, my thesis work gives new and potentially clinically relevant mechanistic insights into GLN-mediated molecular cell survival pathways. These results warrant clinical translation to assess if clinical outcome of critically ill patients suffering from gastrointestinal diseases can be improved by GLN treatment and/or by targeting the molecular pathways found in my studies.
The nothotaxa of the genus Sedum series Rupestria Berger (Crassulaceae) are reviewed, three new hybrids (S. ×affomarcoi, S. ×henkii and S. ×pascalianum) are described and Sedum brevierei Chass. is typified. The identity of the western (French) populations of S. rupestre L. subsp. erectum ‘t Hart is also clarified, and a table with all known combinations is given.