Expression of leptin receptor and suppressor of cytokine signaling-3 genes in adenohypophysis of normal-fed and fasted cows.

Expression of leptin receptor (LR) and suppressor of cytokine signaling (SOCS)-3 genes was investigated in normal-fed and fasted cows. Fasting did not affect LR mRNA, but increased SOCS-3 mRNA in the adenohypophysis, suggesting that heightened responsiveness of fasted cows to leptin is not dependent upon alterations in LR or SOCS-3 mRNA in the adenohypophysis.