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Aims/hypothesis. Pancreatic beta-cell apoptosis is a common feature of Type 1 and Type 2 diabetes and leptin exerts an anti-apoptotic function in these cells. The beta-cell line INS-1 was used to test the hypothesis that the adipocyte hormone adiponectin might mediate an anti-apoptotic effect comparable to leptin. Methods. Apoptosis was induced by culturing cells with a cytokine combination (interleukin-1/interferon-)...
Aims/hypothesis. The purpose of this study was to assess the therapeutic implication of leptin in insulin-deficient diabetes. Methods. Insulin-deficient diabetes was induced by streptozotocin (STZ) in transgenic skinny mice overexpressing leptin. Plasma concentrations of glucose, insulin, and leptin were measured. The effects on body weight, food intake, and hypothalamic gene expressions were analyzed...
Aims/hypothesis. Ageing is associated with insulin and leptin resistance in mammals. These alterations might be caused by the increased adiposity associated with ageing, by ageing alone or both. We studied whether leptin resistance occurs at the central level in the Wistar rat and we aimed to discriminate between the effects of ageing from those of the increased adiposity associated with ageing. Methods...
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