نتایج جستجو برای: vhl

تعداد نتایج: 1947  

2015
Alexander O. Vortmeyer Ahmed K. Alomari

Von Hippel-Lindau (VHL) disease is a tumor syndrome that frequently involves the central nervous system (CNS). It is caused by germline mutation of the VHL gene. Subsequent VHL inactivation in selected cells is followed by numerous well-characterized molecular consequences, in particular, activation and stabilization of hypoxia-inducible factors HIF1 and HIF2. The link between VHL gene inactiva...

2008
William G. Kaelin

| The von Hippel–Lindau disease is caused by inactivating germline mutations of the VHL tumour suppressor gene and is associated with an increased risk of a variety of tumours in an allele-specific manner. The role of the heterodimeric transcription factor hypoxia-inducible factor (HIF) in the pathogenesis of VHL-defective tumours has been more firmly established during the past 5 years. In add...

Journal: :Head & neck 2017
Michael H Berger Darcy A Kerr Artur E Rangel Filho Zoukaa B Sargi

BACKGROUND von Hippel-Lindau (VHL)-related tumors occurring outside the spectrum of VHL-defining tumors are rare, and mucoepidermoid carcinoma (MEC) in the setting of VHL disease has not been described. METHODS AND RESULTS We describe a patient with confirmed VHL mutation who presented with a parotid mass and a history of 2 central nervous system (CNS) hemangioblastomas and 1 pheochromocytoma...

Journal: :The Journal of clinical investigation 2007
Michele M Hickey Jennifer C Lam Natalie A Bezman W Kimryn Rathmell M Celeste Simon

The R200W mutation in the von Hippel-Lindau (VHL) tumor suppressor protein (pVHL) is unique in that it is not associated with tumor development, but rather with Chuvash polycythemia, a heritable disease characterized by elevated hematocrit and increased serum levels of erythropoietin and VEGF. Previous studies have implicated hypoxia-inducible factor-1alpha (HIF-1alpha) signaling in this disord...

2007
Denilce R. Sumita José Cláudio C. Rocha Assumpto Iaconelli Edson Borges Lygia V. Pereira

Von Hippel-Lindau (VHL) disease is an autosomal dominant cancer syndrome, associated with the development of tumors and cysts in multiple organ systems, whose expression and age of onset are highly variable. The VHL disease tumor suppressor gene (VHL) maps to 3p25-p26 and mutations ranging from a single base change to large deletions have been detected in patients with VHL disease. We developed...

Journal: :Clinical cancer research : an official journal of the American Association for Cancer Research 2008
Kim M Smits Leo J Schouten Boukje A C van Dijk Christina A Hulsbergen-van de Kaa Kim A D Wouters Egbert Oosterwijk Manon van Engeland Piet A van den Brandt

BACKGROUND Inactivation of the von Hippel-Lindau (VHL) gene is considered as an early event in renal cancer tumorigenesis. The prognostic relevance of these changes, however, is not clear and previous results are contradictory. We have evaluated the influence of (epi)genetic alterations in VHL on cause-specific survival in clear-cell renal cell cancer (ccRCC) in a large, population-based group ...

Journal: :Nederlands tijdschrift voor geneeskunde 1992
J R Cruysberg A F Deutman

In recent years advances have been made in the clinical and genetic aspects of von Hippel-Lindau disease (VHL). Retinal capillary hemangioma is the most common manifestation of VHL disease and, therefore, ophthalmologists are frequently involved in the care of patients with this disease. The incidence of VHL disease is approximately 1 in 40,000 live births. It is estimated that there are approx...

Journal: :Clinical and investigative medicine. Medecine clinique et experimentale 2012
Angélica Reynoso-Roldán Maria L Roldán Juan C Cancino-Diaz Sandra Rodríguez-Martínez Mario E Cancino-Diaz

PURPOSE In hypoxic tumoral tissues, vascular endothelial growth factor (VEGF) expression is positively regulated by histone deacetylase 1 (HDAC1) and negatively regulated by the tumour suppressor protein von Hippel-Lindau (VHL) via transforming growth factor-alpha (HIF-1alpha). It has been reported that VEGF, HDAC1 and LL-37, but not VHL, are over-expressed in psoriatic skin. Although HIF-1alph...

Journal: :Journal of medical genetics 2001
B U Bender C Eng M Olschewski D P Berger J Laubenberger C Altehöfer G Kirste M Orszagh V van Velthoven H Miosczka D Schmidt H P Neumann

BACKGROUND Germline mutations of the VHL gene cause von Hippel-Lindau syndrome (VHL). In southern Germany, a specific mutation in this gene, c.505 T>C, is one of the most frequent alterations owing to a founder effect. METHODS This study was conducted to evaluate morbidity, specific clinical risk profile, and mortality among a series of VHL c.505 T/C mutation carriers. A total of 125 eligible...

Journal: :iranian journal of pediatric hematology and oncology 0
fatemeh eskandari department of hematology, school of medical sciences, tarbiat modares university, tehran, iran hoda pourkarim department of hematology, allied medical school, tehran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه تربیت مدرس (tarbiat modares university) mehdi sahmani department of clinical biochemistry, cellular and molecular research center, qazvin, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) mehdi goudarzi department of microbiology, school of medicine, shahid beheshti university of medical science, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی قزوین (qazvin university of medical sciences) naser mobarra . stem cell research center, school of medicine, golestan university of medical sciences, gorgan, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) ali dehghanifard sarem cell research center, sarem women’s hospital, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی گلستان (golestan university of medical sciences)

background: vhl (von hippel-lindau), runx-3 (runt-related transcription factor 3), e-cadherin (epithelial cadherin), p15 (ink4a, cyclin dependent kinase inhibitor), and p16 (ink4b) genes are essential in hematopoiesis. the aim of this study was to explore the correlation between gene expression and promoter methylation in cd34+ stem cells before and after differentiation to erythroid lineage. m...

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