Abstract library

10 results for "pro-Endothelin".
#77 Angiogenesis markers after hepatic artery embolization of liver metastases in patients with neuroendocrine tumors
Introduction: In the event of diffuse hepatic metastases, hepatic artery embolization (HAE) can be a successful treatment option in patients with well-differentiated neuroendocrine tumors (WNET). Although there are suggestions of activation of the angiogenesis by HAE, no information is available about the development of growth factors caused by vascular obstruction with embolization.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: MSc Catharina M Korse
#536 Orexins Exert a Pro-Apoptotic Effect on Neuroendocrine Tumors (NETs) in an Ex Vivo Culture Model of Tissue Slices
Introduction: Ex vivo culture models of tissue slices are suitable to test the effect of antitumor agents in human tumors. The orexins are neuropeptides binding to G protein-coupled receptors (OX1-R and OX2-R), exerting a pro-apoptotic effect in human colon and pancreatic cancer cell lines.
Conference: 9th Annual ENETS Conference (2012)
Category: Basic
Presenting Author: Dr Maxime Palazzo
#1347 Evaluation of the Somatostatin, CXCR4 Chemokine and Endothelin A Receptor Expression in a Large Series of Paragangliomas
Introduction: Paragangliomas are predominantly benign tumors, but in some cases invasive growth and also metastasis is observed. Given the limited number of nonsurgical treatment options, novel target structures for diagnostics and therapy of this tumor entity are urgently needed.
Conference: 13th Annual ENETS conference (2016)
Category: Biomarkers
Presenting Author: Prof. Amelie Lupp
#682 Neuroendocrine Tumors, Searching for New Prognostic Biomarkers
Introduction: Neuroendocrine tumors (NET) of the digestive system were once considered relatively rare, however, the incidence is increasing. New prognostic biomarkers are needed for assessment of tumor behavior to inform patient treatment and improve outcome. The proliferation marker, Ki-67, is used for NET grading. Although classified as low grade, some tumors actually develop metastases.
Conference: 10th Annual ENETS Conference (2013)
Category: Biomarkers
Presenting Author: Helen Miller
#977 Inducing, Understanding and Overcoming Resistance to Everolimus in Pancreatic Neuroendocrine Tumors
Introduction: Treatment with the mTOR-inhibitor everolimus improves progression-free survival in advanced pancreatic neuroendocrine tumors (PNETs). However, adaptive resistance to mTOR inhibition is described.
Conference: 11th Annual ENETS Conference (2014)
Category: Basic Science - mTOR and other pathways, signalling, receptors
Presenting Author: Timon Vandamme
Keywords: everolimus
#1078 Somatostatin Responsive ACTH and Precursor Excess in a Midgut Mesentery NET
Introduction: ACTH production from a midgut mesentery NET is extremely rare (1). A 62y old woman presented with hypokalaemia (2mmol/L) and hyperpigmentation, 11y after surgery of a pT3N1Mx non-functional G1 NET with SRS positive, non-resectable but stable, residual mass encasing mesenteric vessels. Serum cortisol (3261 nmol/L), ACTH (796 ng/L), CgA (530 pmol/L) and urine total cortisol metabolites (33920 µg/24h) including 14 sub-products indicated change of biological behaviour into a functioning NET. Pituitary or pulmonary sources were excluded
Conference: 12th Annual ENETS Conference (2015)
Category: Medical treatment - SMS analogues, interferon
Presenting Author: Dr., Ass Prof. Martin O. Weickert
#1301 Role of TSC22D1 (TGFβ-Stimulated Clone 22 Domain Family Member 1) in Bronchial Carcinoids
Introduction: Neuroendocrine tumors (NETs) include bronchial carcinoids, either typical (TC) or atypical (AC). Tsc22d1 encodes for a member of TSC22 domain family of leucine zipper transcription factors; the protein (TSC22D1) is stimulated by TGFβ. Microarray data analysis obtained comparing a pool of TC tissue specimens with a pool of AC tissue specimens shows TSC22D1 down-regulation in AC samples. These data were confirmed by real time PCR and Western blot in vitro models of TC (NCI-H727 cells) and AC (NCI-H720 cells)
Conference: 13th Annual ENETS conference (2016)
Category: Biomarkers
Presenting Author: PhD student Simona Falletta
#2233 Potential Effects of Ketoconazole on ACTH-Producing and Non-ACTH-Producing Neuroendocrine Tumors
Introduction: Prolonged biochemical remission after treatment with steroidogenesis inhibitors has been described in patients with Cushing’s syndrome due to ectopic adrenocorticotropin hormone (ACTH) production. Some studies have suggested antiproliferative and apoptotic effect of ketoconazole in human cancer cells.
Conference: 15th Annual ENETS conference (2018)
Category: Basic Science - In vitro models, tumor growth, CTCs
Presenting Author: Aura Dulcinea Herrera-Martínez
#2280 The BON-SSTR2 Chicken Chorioallantoic Membrane (CAM) Model for the Analysis of Lu-17-DOTATOC Sensitizing Agents
Introduction: Peptide radioreceptor therapy (PRRT) is a promising therapy option for SSTR2-positive pancreatic neuroendocrine neoplasms (NEN). However, therapeutic effects are often not satisfying concerning sensitivity to PRRT. We hypothesize that the slow proliferation of NENs provides sufficient time for the repair of beta-particle induced-DNA damage. The ubiquitin-proteasome-system is involved in DNA damage repair and affected by the proteasome inhibitor bortezomib (Velcade®). The inhibition of DNA damage repair during PRRT may be an option to improve therapy response in NEN. We have recently demonstrated the damage repair inhibitory and pro-apoptotic effect of bortezomib in NEN in vitro (Briest et al., in revision).
Conference: 15th Annual ENETS conference (2018)
Category: Basic Science - In vitro models, tumor growth, CTCs
Presenting Author: Dr. Franziska Briest
#2283 Ultra-Deep Targeted Resequencing Reveals Recurrent DAXX and CYFIP2 Mutations and Implicates Novel Pathways in Pancreatic Neuroendocrine Tumors
Introduction: Recent studies in pancreatic neuroendocrine tumors have identified mutations in DAXX/ATRX, MEN1, and genes involved in the phosphoinositide-3-kinase/Akt/mammalian target of rapamycin (PI3K-Akt-mTOR) pathway. However, these studies focused on abundant mutations.
Conference: 15th Annual ENETS conference (2018)
Category: Basic Science - Genetics, epigenetics, miRNAs, Omics
Presenting Author: Timon Vandamme