Abstract library

33 results for "Delea".
#2075 Phase 1 Pharmacokinetic and Pharmacodynamic Study of APOC, a New Controlled Release Formulation (CRF) of 15mg Octreotide Acetate in Healthy Male Volunteers
Introduction: Somatostatin analogues (SSAs) are considered the gold standard for systemic therapy of advanced neuroendocrine tumors (NETs). Octreotide is one of the SSAs most widely used in long-term therapies of NETs. There is increasing evidence that clinical benefits could be obtained with higher SSAs circulating levels but remain unreachable with current products without impacting significantly the quality of life of the patients. APOC is a new injectable controlled release technology containing Octreotide invented and developed by Ascil-Biopharm and designed to cover specifically these clinical unmet needs. It is presented as ready-to-use and can easily be manufactured at selected doses and durations in prefilled syringe.
Conference: 15th Annual ENETS conference (2018)
Category: Medical treatment - Chemotherapy Somatostatin analogues, Interferon
Presenting Author: Rosa Maria Antonijoan Arbós
#2087 Prospective, Multi-Center, Open Label, Phase Study II of APOC, a New Controlled Release 15mg Octreotide Acetate, for the Treatment of Advanced NETs
Introduction: Somatostatin analogues (SSAs) are the cornerstone of systemic therapy of advanced NETs. The efficacy controlling hormone release and tumor growth together with the favorable toxicity profile have positioned SSAs as upfront therapy. Despite of second-line therapies including targeted agents, chemotherapy and radiolabeled peptides have demonstrated activity controlling tumor growth, the less favorable toxicity profiles become a usual discussion with patients (pts) to preserve the quality of life (QoL). Additionally, from concordant flow of evidences clinical benefits could be obtained with higher SSAs circulating levels but remain unreachable with current products. APOC is a new controlled release ready-to-use convenient therapeutic, designed to cover specifically these clinical unmet needs.
Conference: 15th Annual ENETS conference (2018)
Category: Medical treatment - Chemotherapy Somatostatin analogues, Interferon
Presenting Author: Dr Jaume Capdevila
#18 Long-acting release octreotide induce complete response in type 1 gastric carcinoid tumors
Introduction: Gastric endocrine tumors (GET) are increasingly recognized due to expanding indications of upper gastrointestinal endoscopy. Often silent and benign, GET may also be aggressive when sporadic and may sometimes mimic the course of gastric adenocarcinoma. Current incidence of GETs is estimated at around 8% of digestive endocrine tumors. Yearly age-adjusted incidence is around 0.2 per population of 100,000. Gastric carcinoids (ECLomas) develop from gastric enterochromaffin-like cells (ECL cells) in response to chronically elevated gastrin. Type 1 tumors (ECLomas in the course of atrophic gastritis) may occur in conditions of achlorhydria secondary to auto-immune atrophic fundic gastritis. It occurs mostly in women and they are non-functioning tumors, typically found during upper GI endoscopy performed for dyspepsia. ECLomas present frequently as multiple polyps, usually < 1 cm in diameter in the gastric fundus. Type 1 tumors are almost exclusively benign lesions with little risk of deep invasion of the gastric parietal wall. The neoplastic ECL cells become progressively dedifferentiated with an increasing number of Ki-67 immunoreactive (IR) cell nuclei. In addition, there is a substantial decrease in argynophil and IR NE cells that can be visualized by conventional methods. ECLomas secondary to hypergastrinemia should be closely followed for signs of clinical and histopathological tumor progression. Such ECLomas deserve early, active, radical surgical treatment.
Traditionally, gastric carcinoid type 1 (GCA1s) are endoscopically or surgically removed, depending on the number, appearance and size of the tumors. Antrectomy, with surgical excision of the majority of the G cells, is thought to facilitate regression of these tumors by removing the source of excessive gastrin secretion; however, the long-term benefits of antrectomy still remain uncertain. Although proton pump inhibitors are effective in reducing hypergastrinemia-induced gastric acid hypersecretion in GCA2, they do not affect ECL-cell hyperplasia, and therefore their role in GCA1 is limited. Moreover, in selected cases, significant reduction of hypergastrinemia does not prevent development of ECL carcinoid, suggesting that, in addition to hypergastrinemia, other pathogenic or genetic factors may be involved. Treatment with somatostatin analogues (SSA) might impede ECL-cell hyperplasia by suppressing gastrin secretion and/or by a direct anti-proliferative effect on ECL cells. Treatment with SSAs in GCA1 leads to a substantial tumor load reduction, with a concomitant decrease of serum gastrin levels. Published data indicate an important anti-proliferative effect of SSA on ECL cells, providing clinical benefit and obviating, at least temporarily, the need for invasive therapies for GCA1. Morphometric studies demonstrated that, while antrectomy specifically decreased the volume of ECL cells versus the total volume of endocrine cells, octreotide reduces the overall endocrine cell volume. Although the number of treated patients is small, it has been suggested that SSA may exert important anti-proliferative effects either directly, by inhibiting ECL-cells proliferation, or indirectly through suppression of gastrin hypersecretion.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: MD Ricardo Caponero
#160 The role of T-type calcium channels in medullary thyroid carcinoma (MTC): T-type calcium channel blockers inhibit hormone secretion and induce apoptotic cell death in a human MTC cell line
Introduction: Medullary thyroid carcinoma (MTC) accounts for approximately 5-10% of thyroid cancers. In the case of tumors limited to the thyroid gland, the prognosis is generally favorable, whereas 5-year survival averages only 40% in patients with metastatic disease. In these patients, conventional chemotherapy only occasionally leads to a complete response and partial responses are observed in less than 30% of the cases. Therefore, intense efforts are currently directed toward the identification of new druggable targets for the treatment of this devastating disease.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Dr Rosario Pivonello
#300 Association Between Time to Disease Progression Endpoints and Overall Survival in Patients with Neuroendocrine Tumors
Introduction: While the association between time to disease progression (TDP) and overall survival (OS) has been examined in a variety of cancers, it has not been assessed in trials of neuroendocrine tumors (NETs).
Conference: 8th Annual ENETS Conference (2011)
Category: Clinical
Presenting Author: Thomas E Delea
Authors: Delea T E, Rotter J, Wang X, ...
#612 Serotonin in Blood: Assessment of its Origin by Concomitant Determination of β-Thromboglobulin (platelets) and Chromogranin A (enterochromaffin cells)
Introduction: Serotonin is produced in enterochromaffin (EC) cells, taken up and stored in platelets and released during platelet activation. Measurement of platelet-poor plasma serotonin is difficult, mainly due to platelet activation during blood sampling.
Conference: 10th Annual ENETS Conference (2013)
Category: Biomarkers
Presenting Author: Øyvind Hauso
#1145 The Association Between Gastrin and Glucose Serum Concentration
Introduction: Gastrin is an early incretin candidate, since it is released by oral glucose and potentiates the glucose- induced insulin secretion. It has been shown that only in hypoglycemic or hyperglycemic conditions gastrin release is influenced by changes in blood glucose and insulin concentrations.
Conference: 12th Annual ENETS Conference (2015)
Category: Biomarkers
Presenting Author: MD Krystallenia Alexandraki
#1284 Pharmacokinetic (PK) Differences Between Subcutaneous and Intramuscular Administration of Lanreotide: Results from a Phase I Study
Introduction: Data have shown that 38% of intended gluteal intramuscular (IM) injections with long-acting release octreotide were mistakenly given subcutaneously (SC); in carcinoid syndrome patients, this significantly increased the rate of flushing (P=0.005; Boyd 2013, Pancreas). Lanreotide depot(LD) recently became FDA-approved for the treatment of gastroenteropancreatic neuroendocrine tumors (120 mg Q4W) as a deep SC injection.
Conference: 13th Annual ENETS conference (2016)
Category: ...none of the above
Presenting Author: George Camba
Authors: Manon A, Wolin E, Chassaing C, Lewis A, ...
#12 Chromogranin A as a predictor of progression, regression or stable disease in ileo-cecal (midgut) carcinoid tumors
Introduction: A general characteristic for NETs is their expression of certain proteins, such as chromogranin A (CgA), which is released from the dense core vesicles of NE cells, occasionally together with cell specific hormones, such as gastrin and serotonin. Plasma CgA seems to be closely related to tumor burden of intestinal carcinoid tumors in humans.
Conference: 7th Annual ENETS Conference (2010)
Category: Clinical
Presenting Author: Kenneth Jensen
#19 Antitumor activity of Pasireotide (SOM230) alone and in combination with Everolimus (RAD001) in DU-145 human prostate cancer model
Introduction: Pasireotide (SOM230) is a novel multi-receptor ligand somatostatin analogue with high affinity for somatostatin receptor subtypes sst1,2,3 and sst5. Like octreotide, which binds primarily to sst2, it inhibits hypersecretion of hormones from patients with functional pituitary tumors and gastroenteropancreatic neuroendocrine (GEP/NET) tumors. In addition, tumor shrinkage has been observed with both compounds in patients with acromegaly, Cushing’s disease and GEP/NETs, but its tumor-reducing mechanism of action has so far not been revealed. In patients with breast and liver cancer, octreotide had little or no antitumor activity.
Conference: 7th Annual ENETS Conference (2010)
Category: Basic
Presenting Author: Dr. Herbert A. Schmid
Authors: Schmid H A, Chiara L, Nuciforo P, ...