Polyamines and insulin production in isolated mouse pancreatic islets
نویسندگان
چکیده
منابع مشابه
Isolated Mouse Pancreatic Islets
Inosine is a potent primary stimulus of insulin secretion from isolated mouse islets. The inosine-induced insulin secretion was totally depressed during starvation, but was completely restored by the addition of 5mmi-caffeine to the medium and partially restored by the addition of 5mM-glucose. Mannoheptulose (3mg/ml) potentiated the eflect of lOmM-inosine in islets from fed mice. The mechanism ...
متن کاملEffect of Ganoderma lucidum hydroalcoholic extract on insulin release in rat-isolated pancreatic islets
Objective: Ganoderma Lucidum (G. Lucidum) has been suggested to increase serum insulin level.This study was undertaken to investigateits direct effect on the islets of Langerhans. Material and Methods: Male albino Wistar rats were anesthetized and the islets were isolated after digestion of the pancreas with collagenase. The islets were incubated for 60 min in Krebs bicarbonate buffer containi...
متن کاملThe pentose cycle and insulin release in isolated mouse pancreatic islets during starvation.
When islets from mice were incubated with 16.7 mM-glucose, previous starvation for 48 h decreased the rate of insulin release by approx. 50% and glucose utilization was decreased by approx. 35%. The maximally extractable activity of glucose 6-phosphate dehydrogenase was diminished by 28% after starvation. The formation of 14CO2 from both [1-14C]glucose was, however, higher than the rate of oxid...
متن کاملThe pentose cycle and insulin release in mouse pancreatic islets.
1. Rates of insulin release, glucose utilization (measured as [(3)H]water formation from [5-(3)H]glucose) and glucose oxidation (measured as (14)CO(2) formation from [1-(14)C]- or [6-(14)C]-glucose) were determined in mouse pancreatic islets incubated in vitro, and were used to estimate the rate of oxidation of glucose by the pentose cycle pathway under various conditions. Rates of oxidation of...
متن کاملAn inhibitory role for polyamines in protein kinase C activation and insulin secretion in mouse pancreatic islets.
The occurrence and function of polyamines in protein kinase C activation and insulin secretion in mouse pancreatic islets were studied. Determination of polyamines in mouse islets revealed 0.9 +/- 0.3 (mean +/- S.E.M., n = 6) pmol of putrescine, 11.7 +/- 3.2 (8) pmol of spermidine and 3.7 +/- 0.6 (8) pmol of spermine per islet, corresponding to intracellular concentrations of 0.3-0.5 mM-putresc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1988
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj2520701