Abstract library

389 results for "hypoxia inducible factor".
#205 Integrated Genome-Wide DNA Methylation and mRNA Expression Analysis of Pancreatic NETs Identifies Differential Activation of the Hypoxia Inducible Factor (HIF) Pathway Between Low and Intermediate Grade Tumors
Introduction: This is the first study to integrate DNA methylation and mRNA expression analysis in NETs. It is a powerful approach with which to identify disrupted biological pathways in NET pathogenesis.
Conference: 8th Annual ENETS Conference (2011)
Category: Basic
Presenting Author: Dr Christina Thirlwell
#99 Gene mutations and Hypoxia Inducible Factor (HIF-1) expression as prognostic-predictive factors in pheochromocytomas/paragangliomas (P/P)
Introduction: P/P are rare tumors sporadically associated with familial disorders. In advanced/unresectable disease, no standard treatment has so far been well established. Recently a mutation of some genes (SDHB, SDHC, SDHD) involved in the pathogenesis of familial P/P was discovered. These mutations are often associated with an over-expression of HIF-1, which plays a central role in angiogenesis and cell proliferation. This pathway is known to be inhibited by some targeted therapies, such as sunitinib or sorafenib.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Emilio Bajetta
#1772 Expression of Truncated Functional Subtype 5 Somatostatin Receptor Variant (sst5TMD4) in GEP-NETs and Association with Relevant Pathways Involved in NET Tumorigenesis
Introduction: Sst5TMD4, which is derived from a non-canonical splicing process of sst5 receptor, is overexpressed in several endocrine tumors and associated with a worse prognosis.
Conference: 14th Annual ENETS conference (2017)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: Dr. Angel Diaz Perez
#2269 Can Insulin-Like Growth Factor 1 (IGF-1), IGF-1 Receptor, Connective Tissue Growth Factor and Ki-67 Labelling Index Have a Prognostic Role in Pulmonary Carcinoids?
Introduction: Altered expression of Insulin-like Growth Factor-1 (IGF-1), its receptor (IGF-1R), Connective Tissue Growth Factor (CTGF) and Hypoxia Factor-1 (HIF-1), has been implicated in tumorigenesis. These factors have not been studied systematically in Pulmonary Carcinoids (PCs).
Conference: 15th Annual ENETS conference (2018)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: M.D, Ph.D. Apostolos Tsolakis
Keywords: IGF-1, IGF-1R, CTGF, HIF-1, Ki-67
#911 Immunohistochemical Expression of Connective Tissue Growth Factor and Insulin-like Growth Factor-1 in Lung Carcinoids
Introduction: Several studies have shown altered expression of Insulin-like Growth Factor-1 (IGF-1) and its receptor (IGF-1R) in different types of cancers. Connective Tissue Growth Factor (CTGF) is triggered by Serotonin (5-HT) and Hypoxia Induced Factor 1 (HIF-1) and has been associated with tumor expansion and desmoplastic reaction in carcinoid tumors.
Conference: 11th Annual ENETS Conference (2014)
Category: Non digestive NETs (bronchial, MTC, pheochromocytoma)
Presenting Author: George A Kanakis
Keywords: lung, carcinoid, CTGF, IGF-1
#466 HIF-1a Determines the Metastatic Potential of the GEP-NET Cell Line BON-1
Introduction: Intratumoral hypoxia is a hallmark of solid tumor formation and a negative predictor of patient survival. Adaptation to hypoxia is mainly achieved by the transcription factor HIF-1a, which is upregulated in a diverse range of human and experimental tumors and their metastases. HIF-1a target genes have been implicated in the induction of invasion and metastasis. However, HIF-1a’s tumor-supporting action depends on cell type and microenvironment and the precise role of HIF-1a for the pathogenesis of neuroendocrine tumors (NET) is largely unknown.
Conference: 9th Annual ENETS Conference (2012)
Category: Basic
Presenting Author: Katja Freitag de Molina
#480 Immunohistochemical (IHC) Overexpression of Succinate Dehydrogenase (SDHB) as Prognostic Factor in Sporadic Pheochromocytomas/Paragangliomas (P/P)
Introduction: Recently, gene mutations (SDH complex) involved in the pathogenesis of familial P/P have been discovered. These mutations are often associated with SDHB activity loss and activation of hypoxia signals.
Conference: 9th Annual ENETS Conference (2012)
Category: Basic
Presenting Author: MD Sara Pusceddu
#581 Loss of Succinate Dehydrogenase (SDHB) Expression in Midgut Carcinoids as Prognostic Factor: a New Marker of Personalized Cancer Medicine in Neuroendocrine Tumors?
Introduction: Gene mutations of SDH complex have been involved in the pathogenesis of cancer cells. These mutations are often associated with loss of activity of SDH subunity B and overexpression of HIF-1a, which play a central role in angiogenesis.
Conference:
Category: Basic
Presenting Author: Dr. Massimo Milione
#2012 Expression and Clinical Significance of Vascular Endothelial Growth Factor D in Gastroenteropancreatic Neuroendocrine Neoplasms
Introduction: The expression of vascular endothelial growth factor D (VEGF-D) in tumor cells versus stroma cells in gastroenteropancreatic neuroendocrine neoplasms (GEP-NEN) and its clinical significance is still unknown.
Conference: 15th Annual ENETS conference (2018)
Category: Basic Science - Signaling pathways, receptors, biomarkers
Presenting Author: Professor Jie Chen
Authors: Zhang Y, Chen L, Lin Y, Chen M, ...
#246 SDHB Loss Predicts Malignancy in Pheochromocytomas/Sympathethic Paragangliomas, but Not Through Hypoxia Signalling
Introduction: To date there is no reliable histopathological marker of malignancy for pheochromocytomas/sympathetic paragangliomas (PCC/PGL). It is well-known that PCC/PGL in the hereditary context of an SDHB germline mutation very often metastasize. The immunohistochemical loss of SDHB expression was recently shown to be a surrogate marker for the presence of an SDH germline mutation in PCC/PGL. SDHB loss is supposed to be tumorigenic via activation of hypoxia signals.
Conference: 8th Annual ENETS Conference (2011)
Category: Basic
Presenting Author: Dr Anja M Schmitt