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首页> 外文期刊>The FASEB Journal >Maternal food restriction‐induced intrauterine growth restriction in a rat model leads to sex‐specific adipogenic programming
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Maternal food restriction‐induced intrauterine growth restriction in a rat model leads to sex‐specific adipogenic programming

机译：Maternal food restriction‐induced intrauterine growth restriction in a rat model leads to sex‐specific adipogenic programming

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Abstract Intrauterine growth restriction (IUGR) leads to offspring obesity. In a maternal food restriction (MFR) during pregnancy‐related IUGR rat model, bone marrow stem cells showed enhanced adipogenic programming; however, the effect of IUGR on white adipose tissue (WAT) progenitors is unknown. Here, by mRNA and functional profiling, we determined sex‐specific adipogenic programming of WAT progenitors isolated from pups on the postnatal day (PND) 1 and 21. On PND1, PPARγ and Pref‐1 expression was significantly downregulated in preadipocytes of both MFR males and females; however, at PND21, preadipocytes of MFR males showed upregulation in these genes. Even following adipogenic induction, both male and female MFR adipocytes exhibited lower PPARγ, ADRP, and adiponectin levels at PND1; however, at PND21 MFR male adipocytes showed an upward trend in the expression of these genes. An adipogenesis‐specific RT‐PCR array showed that male MFR adipocytes were programmed to exhibit stronger adipogenic propensity than females. Last, serum sex hormone and adipocyte estrogen/testosterone receptor expression profiles provide preliminary insights into the possible mechanism underlying sex‐specific adipogenic programming in the IUGR offspring. In summary, IUGR programs WAT preadipocytes to greater adipogenic potential in males. Although the altered adipogenic programming following MFR was detectable at PND1, the changes were more pronounced at PND21, suggesting a potential role of postnatal nutrition in facilitating the sex‐specific adipogenic programming in the IUGR offspring.

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