PMID: 8597498Jan 1, 1995Paper

From obesity to diabetes

Annales d'endocrinologie
J P Felber, A Golay

Abstract

The frequent development of Type 2 diabetes in the obese suggests a relationship between obesity and diabetes. This study presents evidence for a continuum form obesity to diabetes via glucose intolerance and hyperinsulinemic diabetes. The defect which seems to be at the origin of this development resides in the increase in lipid oxidation already present in the early stages of obesity. It reflects the increased utilisation of fatty acids for energy purpose in the obese, at the expenses of glucose. In non-diabetic obese subjects, insulin resistance can be demonstrated by the inhibition of glucose storage during a euglycemic, hyperinsulinemic, clamp. This defect in glucose storage is not observed during a oral glucose tolerance test (OGTT), as it is compensated by hyperinsulinemia and hyperglycemia during glucose tolerance. Glucose tolerance appears with the inhibition of glucose oxidation by the augmented lipid oxidation. This decreased glucose utilization causes a slowdown of the utilization of glycogen stores which leads, as a consequence, to the inhibition of glycogen synthase by its product, glycogen. Diabetes appears when the increase in glycemia and insulinemia does not compensate any more for the inhibition of glucose st...Continue Reading

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