Abstract library

409 results for "proGastrin Releasing Peptide".
#78 The diagnostic and prognostic value of elevated proGRP levels in well- and moderately differentiated neuroendocrine tumors
Introduction: Chromogranin A (CgA) is the most frequently used marker in well- (grade 1) and moderately (grade 2) differentiated NETs. Although CgA is a more sensitive marker than the 5-HIAA, which was widely used until the last decade, CgA has some limitations. False-positively elevated CgA may occur in renal impairment, atrophic gastritis and during treatment of proton-pump inhibitors. Progastrin-releasing peptide (proGRP) was recently reported as a promising tumor marker for small cell lung cancer. Limited data suggests that ProGRP may be a potential tumor marker in NE tumors.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Msc Catharina M Korse
#21 Peptide Receptor Radioligand Therapy (PRRT) is an Effective Treatment for the Long-Term Stabilization of Malignant Gastrinomas
Introduction: Gastrinomas represent a rare group of neuroendocrine tumors usually located in the duodenum or pancreas. They secrete gastrin, which is responsible for the clinical picture of severe acid-related peptic disease and diarrhea, known as the Zollinger-Ellison syndrome (ZES). While symptomatic control may be achieved with proton-pump inhibitors (PPIs) and somatostatin analogues (SSAs) treatment, little data is known regarding the possible anti-tumor effect of the peptide receptor radioligand therapy (PRRT) in gastrinoma patients.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr. Simona Grozinsky-Glasberg
#17 Diagnostic efficacy of the secretin stimulation test for the Zollinger-Ellison syndrome: an intra-individual comparison using different dosages in patients and controls
Introduction: The diagnosis of Zollinger-Ellison syndrome is suspected in patients with symptoms of gastric acid hypersecretion, i.e., peptic ulcer disease, malabsorption or diarrhea, or with elevated fasting serum gastrin levels. However, symptoms can be masked by the use of proton pump inhibitors and fasting serum gastrin values are not always conclusive. Therefore, the secretin stimulation test is advocated as the principal diagnostic tool to identify the Zollinger-Ellison syndrome.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Patricia Kuiper
#267 Plasma Somatostatin: Gastrin Ratio Improves the Diagnosis of Gastrinoma
Introduction: Fasting gastrin alone is inadequate for diagnosis of gastrinoma. Diagnosis requires confirmation of low gastric pH. Low gastric pH is associated with increased numbers of D (somatostatin) cells.
Conference: 8th Annual ENETS Conference (2011)
Category: Basic
Presenting Author: Dr Radha Ramachandran
#53 The rise and fall of chromogranin A as an indicator for NET
Introduction: There is now general awareness that treatment with proton pump inhibitors (ppi) may cause moderate rises in circulating concentrations of gastrin and/or chromogranin A (CgA), thus decreasing the specificity of these markers in the diagnosis of neuroendocrine tumors (NETs). Due to their high efficacy, proton pump inhibitors (ppi) are one of the most frequently prescribed classes of drugs worldwide. Several studies in various countries report that 30% or more of in-patients have been prescribed ppi. Patients who are suspected of having a neuroendocrine tumor (NET) often have gastrointestinal (GI) symptoms for which ppi are prescribed and therefore they may be already taking ppi when their first blood sample is assayed for NET markers. We previously encountered a case of extreme rise in CgA which flagged the possibility of a NET, but was later shown to be due to ppi therapy alone. We present CgA and gastrin data in relation to ppi therapy and withdrawal for this patient. In order to see if this was an isolated incident, we audited all laboratory requests for CgA/gastrin in a two-year period and monitored those that provided details of ppi treatment/withdrawal.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Dr Lee Armstrong
Authors: Armstrong L, Ryan K, Ardill J, ...
#1012 Efficacy of Lanreotide Autogel in MEN1-Related Gastrinoma: A Case Series
Introduction: GEP NETs, especially gastrinomas, occur in 40-70% of MEN1 patients and represent the main cause of death in these patients.
Conference: 11th Annual ENETS Conference (2014)
Category: Medical treatment - SMS analogues, interferon
Presenting Author: Laura De Marinis
Keywords: MEN1, SSA, gastrin
#2258 Cystic Duct Gastrinoma in a Patient with MEN1: A Case Report
Introduction: Gastrinomas are the most common functional enteropancreatic neuroendocrine tumour in MEN1 patients and are located almost exclusively in duodenum. Biliary tree gastrinomas are rare and accounted for 6 cases in literature. Only one of these cases was restricted to the biliary tree without associated duodenal gastrinomas.
Conference: 15th Annual ENETS conference (2018)
Category: Case reports
Presenting Author: MD Eloa Brabo
#277 Metastatic Gastrinoma Co-secreting PTHrP and ACTH
Introduction: Metastatic gastrinoma is occasionally associated with tumor secretion of functioning peptides, resulting in additional syndromes.
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: Dr Richard W Carroll
#386 A Prospective Evaluation of the Effects of Chronic Proton Pump Inhibitor Use on Plasma Biomarker Levels in Humans
Introduction: Proton pump inhibitors (PPIs) are used primarily to treat gastroesophageal reflux disease. PPI-induced achlorhydria increases circulating gastrin and chromogranin A (CGA). CGA is a widely used biomarker for the diagnosis and follow-up for gut-based neuroendocrine tumors (NETs). PPI-induced increases in CGA or gastrin may falsely suggest the presence of a NET when none exists. Pancreastatin, a fragment of CGA, is also commonly used to diagnose and follow NETs.
Conference: 9th Annual ENETS Conference (2012)
Category: Clinical
Presenting Author: Dr Eugene Woltering
#957 Outcome Predictors of Gastrinomas: The Role of ENETS Staging, Grading and Interdisciplinary Treatment
Introduction: Gastrinomas are rare neuroendocrine neoplasias (NEN) presenting with Zollinger‐Ellison‐syndrome (ZES).
Conference: 11th Annual ENETS Conference (2014)
Category: Pathology, grading, staging
Presenting Author: M.A. Stephan Felder
Authors: Felder S, Jann H, Tischer E, Pascher A, ...