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Akademický článek
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Autor:
F. V. Sepúlveda
Publikováno v:
Quarterly Journal of Experimental Physiology. 71:329-330
Publikováno v:
Bioscience Reports. 21:653-666
In rat islets, progesterone caused a prompt concentration-dependent inhibition of glucose-stimulated insulin release with an IC50 of 10 μM at 8.4 mM glucose. The inhibition was specific since both testosterone and 17β-estradiol had no such effect.
Autor:
G. W. G. Sharp, Shao Hua Tang
Publikováno v:
Diabetes. 47:905-912
Carbachol-stimulated insulin release in the RINm5F cell is associated with elevation of the cytosolic Ca2+ concentration ([Ca2+]i) through mobilization of Ca2+ from thapsigargin-sensitive intracellular stores and with the generation of diacylglycerol
Autor:
Mitsuhisa Komatsu, G. W. G. Sharp
Publikováno v:
Diabetes. 47:352-357
Under Ca2+-free conditions, activation of the pancreatic beta-cell with forskolin and 12-O-tetradecanoylphorbol 13-acetate (TPA) is permissive for the augmentation of insulin release by glucose and other nutrients. The ability of fatty acids to mimic
Publikováno v:
American Journal of Physiology-Gastrointestinal and Liver Physiology. 250:G691-G697
The effects of 3,4,5-trimethoxybenzoate 8-(N,N-diethylamino)octyl ester (TMB-8), an agent that traps calcium within intracellular stores, were studied on active electrolyte transport in rabbit ileum under basal conditions and after altering transport
Publikováno v:
Journal of Clinical Investigation. 83:1953-1962
Calcium/calmodulin is involved in the regulation of basal rabbit ileal active Na and Cl absorption, but the mechanism by which elevated intracellular Ca2+ affects Na and Cl transport is unknown. To investigate the roles of the Ca2+/calmodulin and pro
Autor:
G W G Sharp, J Fischer
Publikováno v:
Biochemical Journal. 176:505-510
A comparison was made of the effects of cholera toxin and p[NH]ppG on the binding affinity of beta-adrenergic receptors in toad erythrocyte membranes. This was determined by studying the ability of isoproterenol and propranolol to compete for the rec
Publikováno v:
American Journal of Physiology-Gastrointestinal and Liver Physiology. 254:G543-G551
Basolateral plasma membranes play an integral role in coupling of stimulus to secretion of fluid and protein from the lacrimal gland. To determine if basolateral plasma membranes contain Ca2+- or adenosine 3', 5'-cyclic monophosphate (cAMP)-dependent
Publikováno v:
Clinical Infectious Diseases. 8:S188-S201
The gastrointestinal tract is involved in both absorption and secretion of electrolytes and water, with absorption as the predominant process. In diarrheal diseases this balance is disturbed, and the result is net secretion. Most of the drugs used fo