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Arvaniti, K. et al.

Leptin and corticosterone have opposite effects on food intake and the expression of UCP1 mRNA in brown adipose tissue of lep(ob)/lep(ob) mice.

The present study was conducted to assess the interaction effect of leptin and corticosterone on food intake and the expression of uncoupling protein 1 (UCP1) mRNA in interscapular brown adipose tissue (IBAT). To this end, a 3 x 3 factorial experiment was designed in which adrenalectomized (ADX) lep(ob)/lep(ob) mice were subjected to three doses of corticosterone and three doses of leptin. The results confirm the anorectic and orexigenic effects of leptin and corticosterone, respectively. The results also emphasize the abilities of leptin and corticosterone to respectively increase and reduce the expression of UCP1 mRNA in IBAT. The effects of leptin and corticosterone on food intake and the expression of UCP1 mRNA translated into effects on body weight and body composition; leptin reduced body weight and corticosterone increased the weight of IBAT. The present results do not provide evidence for leptin-corticosterone interactions in the control of food intake and thermogenesis. Corticosterone increased food intake and reduced the expression of IBAT UCP1 regardless of the leptin status, and leptin reduced food intake and induced the expression of IBAT UCP1 independently of the corticosterone levels.[1]

References

Leptin and corticosterone have opposite effects on food intake and the expression of UCP1 mRNA in brown adipose tissue of lep(ob)/lep(ob) mice. Arvaniti, K., Ricquier, D., Champigny, O., Richard, D. Endocrinology (1998) [Pubmed]

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