Abstract

Effects of leptin on food intake and nitric oxide (NO) metabolites (nitrite and nitrate, NOx) levels of brain were investigated in mice. Leptin dose-dependently decreased milk intake in food-deprived mice. Administration of leptin at a dose of 1 mg/kg, which induces an apparent hypophagia, did not affect NOx levels in the hypothalamus and frontal cortex. These results suggest that leptin reduces food intake in food-deprived mice without altering NO production in the hypothalamus, which plays an important role in regulation of feeding.

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