A hypoglycemic effect of manganese has been demonstrated in several species including humans. In this study, we evaluated the effect of acute oral administration of manganese on glucose tolerance and oxidation in six type II diabetic and seven non-diabetic subjects. Subjects were given 1 g/kg BW glucose p.o. with and without 15 and/or 30 mg manganese (as gluconate). Non-diabetic subjects demonstrated brisk insulin and C-peptide responses to glucose accompanied by prompt, complete suppression of glucagon. Type II diabetic subjects showed markedly impaired glucose tolerance, delayed insulin and C-peptide responses, and only minimal inconsistent suppression of pancreatic glucagon. Neither glycemic nor hormonal responses were altered by manganese in either group. These results do not support a generalized effect of acute manganese supplementation on glucose metabolism in either control or type II diabetic subjects.
|Original language||English (US)|
|Number of pages||7|
|Journal||Journal of Trace Elements in Experimental Medicine|
|State||Published - 1991|
ASJC Scopus subject areas