• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 19
  • 12
  • 9
  • 5
  • 4
  • 2
  • Tagged with
  • 51
  • 33
  • 21
  • 15
  • 15
  • 14
  • 14
  • 12
  • 11
  • 11
  • 11
  • 11
  • 10
  • 9
  • 9
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

A translational study of the nephrotoxicity of aristolochic acids by a metabonomic approach in NMR spectroscopy validated by conventional biomarkers

Duquesne, Marilyn 30 March 2018 (has links)
Utilisation de la métabonomique en spectroscopie RMN pour l'identification de biomarqueurs d'exposition à l'acide Aristolochique. Développement de modèles expérimentaux chez des rats mâles. Analyse d'échantillons urinaires provenant de patients croates potentiellement touchés par la Néphropathie endémique des Balkans / Doctorat en Sciences biomédicales et pharmaceutiques (Médecine) / info:eu-repo/semantics/nonPublished
42

Locally Recurrent Malignant Fibrous Histiocytoma: A Rare and Aggressive Genitourinary Malignancy

Fröhner, Michael, Manseck, Andreas, Haase, Michael, Hakenberg, Oliver W., Wirth, Manfred P. January 1999 (has links)
Objective: In this study, 22 cases of locally recurrent urological malignant fibrous histiocytoma were reviewed considering therapeutic options, follow-up and prognosis. Patients and Methods: In the available literature on this topic we identified 19 cases of locally recurrent genitourinary malignant fibrous histiocytoma. Three additional cases are discussed, primarily arising from the kidney, the bladder and the paratesticular region. Results: The prognosis of locally recurrent urological malignant fibrous histiocytoma was found to be extraordinarily poor. Only 2 of 22 patients have survived for longer than 3.5 years. One of them reported herein is still alive 10 years after extensive lymphatic spread accompanying the first local recurrence. In this case, late local recurrence occurred after an 8-year interval free of disease. Conclusion: Malignant fibrous histiocytoma is an unusual urological malignancy with a high rate of local recurrence. The latter is frequently accompanied by metastatic disease and unrelenting progression. Despite the poor prognosis early detection of local failure and aggressive salvage therapy might offer the chance of long-term survival in selected cases. Close and life-long follow-up is advisable for patients once treated for recurrent urological malignant fibrous histiocytoma. / Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
43

Zellexperimentell vergleichende Untersuchung zum Androgenrezeptor beim kastrationsresistenten Prostatakarzinom / comparative studies of the role of androgen receptor in castration-resistant prostate cancer

Meyer-Wilmes, Kerstin 30 June 2020 (has links)
No description available.
44

Multilevel analysis of readmissions following percutaneous nephrolithotomy in kidney stones formers and implications for readmissions-based quality metrics

Harmouch, Sabrina 08 1900 (has links)
Objectif : Estimer la contribution statistique des caractéristiques des hôpitaux et des caractéristiques liés aux patients sur la probabilité de réadmission des patients qui ont subi une PCNL, une procédure endoscopique à haut risque de morbidité, dans les hôpitaux aux États-Unis en 2014 et évaluer les prédicteurs des taux de réadmissions d’une PCNL. Méthode : Nous avons identifié tous les patients qui ont subi une PCNL dans les hôpitaux aux États-Unis en 2014 (janvier-novembre) en utilisant la banque de données nationale de réadmission (NRD). L’issue d’intérêt était une réadmission non planifiée 30 jours après une PCNL. À l’aide d’un modèle multi-niveaux à effets mixtes, nous avons estimé l’association statistique entre les caractéristiques hospitalières ainsi que les caractéristiques individuelles liés aux patients sur la probabilité de réadmission. Un effet aléatoire associée à l'hôpital a été utilisé pour estimer le taux de réadmission au niveau hospitalier. Un pseudo R-carré a été calculé pour évaluer la contribution de chaque catégorie de variables sur les taux de réadmission. Résultats : Notre échantillon pondérée était constitué de 6 974 personnes ayant subi une PCNL dans 485 hôpitaux aux États-Unis en 2014. Le taux de réadmission à 30 jours était de 8,5 % (IC à 95 % 7,4 – 9,7). Après ajustement, les caractéristiques hospitalières n’étaient pas associées à une probabilité accrue de réadmission. Le sexe féminin était associé à une diminution de la probabilité de réadmission (IC à 95% 0.54 – 0.93). Les hôpitaux individuelles n’ont contribué qu’à une infime partie à la probabilité d’être réadmis de leurs patients. Les caractéristiques liés aux patients expliquaient davantage la variabilité dans la probabilité de réadmission que les caractéristiques hospitalières (pseudo-R2 9.50% vs 0.03%). Conclusion : Le risque d’être réadmis après une PCNL varie énormément entre les hôpitaux. Une fraction minime de cette variabilité peut être expliqué par les caractéristiques hospitalières contrairement aux caractéristiques des patients. Ces résultats soulignent les limites potentielles de l’utilisation des réadmissions comme mesure de la qualité des soins. / Objective: Estimate the relative contribution of hospital and patient factors to readmission after a typical high-risk endoscopic procedure, percutaneous nephrolithotomy (PCNL). Methods: We utilized the Nationwide Readmission Database to identify the patients who underwent PCNL in the United States hospitals in 2014 (January-November). The main outcome was unplanned 30-day readmission following a PCNL. Using a multilevel mixed-effects model, we estimated the statistical association between patient and hospital characteristics and readmission. A hospital-level random effects term was added to estimate hospital-level readmission. To assess the relative contribution of each group of variables on readmission rates, a pseudo-R2 was calculated to assess the contribution of hospital effects to the model of readmission. Results: We identified a weighted sample of 6,974 individuals who underwent PCNL at 485 hospitals in the United States in 2014. The 30-day readmission rate was 8.5% (95% CI 7.4 – 9.7). In our adjusted model, hospital characteristics were not associated with increased likelihood of readmission. Female sex was the only characteristic associated with decreased likelihood of readmission (95% CI 0.54 – 0.93). Individual hospitals contributed marginally to their patients probability of readmission. Patient level characteristics explained far more of the variability in readmissions than hospital characteristics (pseudo-R2 9.50% vs 0.03%). Conclusion: The risk of readmission after a PCNL is highly variable in between hospitals. The statistical contribution of individual hospitals and hospital characteristics to the probability of readmission following a PCNL was minimal compare to patient characteristics. These findings underscore the potential limitations of using 30-day post-discharge readmissions as a hospital-level quality metric.
45

Bedeutung der Blockade des lokalen Angiotensinsystems für die chronisch progrediente Niereninsuffizienz im Rahmen der Alport-Nephritis / Significance of Blockade of the Local Angiotensin System for Chronic Progressive Renal Insufficiency in context of alport nephritis

Bemme, Sebastian 03 September 2012 (has links)
No description available.
46

Die Wirkung des kompetitiven Gastrin-releasing peptide-(GRP-) -Antagonisten RC 3095 auf das Wachstumsverhalten im Modell experimentell induzierter orthotoper Nierenzellkarzinome – Analyse mittels Volumencomputertomographie (VCT) / The Impact of the Competitive Gastrin-Releasing Peptide (GRP) Antagonist RC 3095 on Growth Behaviour in the Model of Experimentally Induced Orthotopic Renal Cell Carcinoma – Analysis Based on Volumetric Computed Tomography (VCT)

Koskinas, Nikolaos 18 October 2017 (has links)
No description available.
47

ATP induced intracellular calcium response and purinergic signalling in cultured suburothelial myofibroblasts of the human bladder

Cheng, Sheng 11 June 2012 (has links) (PDF)
Suburothelial myofibroblasts (sMF) are located underneath the urothelium in close proximity to afferent nerves and show spontaneous calcium activity in vivo and in vitro. They express purinergic receptors and calcium transients can be evoked by ATP. Therefore they are supposed to be involved in afferent signaling of the bladder fullness. Myofibroblast cultures, established from cystectomies, were challenged by exogenous ATP in presence or absence of purinergic antagonist. Fura-2 calcium imaging was used to monitor ATP (10-16 to 10-4 mol/l) induced alterations of calcium activity. Purinergic receptors (P2X1, P2X2, P2X3) were analysed by confocal immunofluorescence. We found spontaneous calcium activity in 55.18% ± 1.65 (mean ± SEM) of the sMF (N=48 experiments). ATP significantly increased calcium activity even at 10-16 mol/l. The calcium transients were partially attenuated by subtype selective antagonist (TNP-ATP, 1μM; A-317491, 1μM), and were mimicked by the P2X1, P2X3 selective agonist α,β-methylene ATP. The expression of purinergic receptor subtypes in sMF was confirmed by immunofluorescence. Our experiments demonstrate for the first time that ATP can modulate spontaneous activity and induce intracellular Ca2+ response in cultured sMF at very low concentrations, most likely involving ionotropic P2X receptors. These findings support the notion that sMF are able to register bladder fullness very sensitively, which predestines them for the modulation of the afferent bladder signaling in normal and pathological conditions.
48

Untersuchungen zur Kombinationswirkung von Valproat und Bestrahlung in Bezug auf klonogenes Überleben, Apoptose, Polyploidie und chromosomale Instabilität in Prostatakarzinom- und Prostatahyperplasie-Zelllinien / The combined effect of valproate and radiation on clonogenic survival, apoptosis, polyplodity and chromosomal instability in prostate cancer cells and prostate hyperplasia cells

Friedrich, Christiane 23 November 2010 (has links)
No description available.
49

Analyse der Ergebnisse und Komplikationen der ureterorenoskopischen Steintherapie von 1998 bis 2008 unter Berücksichtigung des verwendeten Instrumentariums sowie der Steincharakteristika / Analysis of results and complications of ureteroscopic stone treatment from 1998 to 2008 with particular reference to instruments and stone characteristics

Lumma, Philipp-Paul 02 May 2011 (has links)
No description available.
50

Prävention des Nierenversagens und der Nierenfibrose bei hereditären Erkrankungen der glomerulären Basalmembran (Alport-Syndrom) bei COL4A3-Knockout-Mäusen mit dem Reninantagonisten Aliskiren / Prevention of renal failure and renal fibrosis in hereditary diseases of glomerular basement membrane (Alport-Syndrome) in COL4A3 knockout mice with Aliskiren a direct renin inhibitor

Theisen, Stephanie 04 June 2012 (has links)
No description available.

Page generated in 0.0288 seconds