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- W2029372988 abstract "Evidence has shown that postnatal undernutrition, overnutrition and cold stress are associated with imbalanced metabolic regulation as rodents achieve adulthood. In this study, we used a breeding colony of Brandt's voles (Lasiopodomys brandtii), a wild rodent species from the Inner Mongolia grasslands in China, to examine the effects of pre- and post-weaning cold exposure on the adult body (fat) mass, serum hormones and hypothalamic neuropeptides. Unlike laboratory rodents, vole offspring exposed to pre-weaning cold did not exhibit overweight or obese phenotypes in adulthood compared with unexposed controls. Moreover, adult male voles that remained in colder conditions had less body mass and lower serum leptin levels despite having higher food intake compared to other groups. To understand the mechanism of this unexpected regulation, hypothalamic gene expression was assessed for pre- and post-weaning cold exposure. Voles exposed to cold before weaning increased hypothalamic, orexigenic agouti-related protein (AgRP) and decreased anorexigenic proopiomelanocortin (POMC) mRNA expression at weaning. These expression changes were associated with hyperphagia and catch-up growth after weaning. Interestingly, these changes in hypothalamic neuropeptides were short lasting because in adult voles these differences were no longer apparent, which might explain why the pre-weaning, cold-exposed voles did not become obese in adulthood. These data suggest that some species do not develop an obese phenotype in response to early life cold stress." @default.
- W2029372988 created "2016-06-24" @default.
- W2029372988 creator A5039837606 @default.
- W2029372988 creator A5071957113 @default.
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- W2029372988 date "2011-07-01" @default.
- W2029372988 modified "2023-09-23" @default.
- W2029372988 title "Pre- and post-weaning cold exposure does not lead to an obese phenotype in adult Brandt's voles (Lasiopodomys brandtii)" @default.
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- W2029372988 doi "https://doi.org/10.1016/j.yhbeh.2011.05.004" @default.
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