alexa Non insulin dependent diabetes in sand rat (Psammomys obesus) and production of collagen in cultured aortic smooth muscle cells. influence of insulin.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Diabetes & Metabolism

Author(s): Bouguerra SA, Bourdillon MC, Dahmani Y, Bekkhoucha E

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Abstract In this report, we have shown that the standard laboratory diet administered to Psammomys obesus (sand rat) from Beni Abbes in Algeria, induced a non-insulin dependent diabetes, characterised by increase of body weight (p<0.001) as well as hyperinsulinemia, hyperglycemia and hypercholesterolemia. In cultured aortic smooth muscle cells (SMC) of sand rats, type I and type III collagen biosynthesis and insulin effects, at low dose, on these parameters were investigated. In all experimental conditions of cultured SMC study, The alpha chains of type I collagen were analysed by immunoblotting in media and cells. Metabolic radiolabelling and Immunochemical procedures revealed that, in diabetic state, synthetic SMC (SMCs) actively produce type I and III collagen which are synthesised in the cells and secreted in the medium; type I collagen was predominant as compared with type III collagen. Diabetes enhanced the collagen synthesis. Low dose of Insulin added to the medium, during 48 h of incubation, induced a marked reduction in the synthesis of collagen types, especially type I collagen.
This article was published in Int J Exp Diabetes Res and referenced in Journal of Diabetes & Metabolism

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