Lifelong enhanced diabetes susceptibility and obesity after temporary intrahypothalamic hyperinsulinism during brain organization
2009
New born male Wistar-rats received bilateral intrahypothalamic insulin-agar-implants on the 2nd or 8th day of life. In male control animals only the insulin-free indifferent agar-vehicle was implanted at the same age. In both experimental groups with temporary intrahypothalamic hyperinsulinism during brain organization the following results were obtained: 1) Higher body weight gain starting at the end of the hypothalamic differentiation period and continuing during juvenile life until adulthood, resulting in increased relative body weight as a sign of obesity; 2) A tendency to basal hyperinsulinaemia in juvenile and adult age; 3) Impaired glucose tolerance in adulthood; 4) Increased diabetes susceptibility to a single «subdiabetogenic» dose of streptozotocin in adult age
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