The role of photoperiod on the expression of hypothalamic genes regulating appetite in Chevrier’s field mouse (Apodemus chevrieri)

Zhang, Lin; Yang, Fang; Cai, Jinhong; Huang, Chunmei; Wang, Zhengkun; Zhu, Wanlong

The role of photoperiod on the expression of hypothalamic genes regulating appetite in Chevrier’s field mouse (Apodemus chevrieri)

2015

The hypothalamus and leptin play a key role in the regulation of food intake. The present study investigated the effects of 4 weeks of short- or long-photoperiod on serum leptin levels and food intake in relation to mRNA expression levels of neuropeptide Y, agouti-related protein, pro-opiomelanocortin, and cocaine- and amphetamine-regulated transcript in the hypothalamus of Chevrier’s field mouse (Apodemus chevrieri). There was a significant difference in body fat mass, food intake and neuropeptide Y mRNA expression between the two groups, but serum leptin level, agouti-related protein, pro-opiomelanocortin, and cocaine- and amphetamine-regulated transcript mRNA expression in the hypothalamus were not difference between the two groups. The elevation of neuropeptide Y mRNA regulated neuropeptides in the hypothalamus suggests a physiological role of neuroendocrine factors in food intake during the different photoperiod. We conclude that leptin may be involved in energy balance and body mass regulation.

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