H Labriji-Mestaghanmi

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Vitamin D3 deficiency decreased glucose-induced insulin release from isolated rat islets. In vivo, vitamin D3 treatment restored the B-cell response within 3 days; this delay suggests an effect of vitamin D3 metabolites. The effect of 1,25-dihydroxyvitamin D3 was studied in vitro on isolated islets from vitamin D3 deficient rats. When it was added to the(More)
Pancreatic islets were prepared from control and vitamin D-deprived rats 2 or 5 weeks after weaning and, in the latter case, after 3 or 6 days treatment with exogenous vitamin D3 (60 nmol per day). The islets were prelabelled with both 86Rb and 45Ca and placed in a perfusion chamber. Vitamin D deprivation or administration failed to affect 86Rb outflow(More)
After weaning, rats were given free access to a control or vitamin D-deprived diet for 2 to 5 weeks. In the vitamin D deficient rats, plasma concentrations of 25-(OH)D3, 1,25-(OH)2D3,24,25-(OH)2D3 calcium, glucose and insulin were all decreased. After an overnight fast, the plasma insulin concentration was also decreased even when the plasma glucose(More)
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