Decreased testosterone levels after caponization leads to abdominal fat deposition in chickens

文献类型： 外文期刊

第一作者： Cui, Xiaoyan

作者： Cui, Xiaoyan;Cui, Huanxian;Liu, Lu;Zhao, Guiping;Liu, Ranran;Li, Qinghe;Zheng, Maiqing;Wen, Jie;Cui, Xiaoyan;Cui, Huanxian;Liu, Lu;Zhao, Guiping;Liu, Ranran;Li, Qinghe;Zheng, Maiqing;Wen, Jie;Cui, Xiaoyan

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关键词： Capon; Testosterone; Lipid metabolism; Differential expression gene; PPAR pathway

期刊名称：BMC GENOMICS （ 影响因子：3.969； 五年影响因子：4.478 ）

ISSN： 1471-2164

年卷期： 2018 年 19 卷

页码：

收录情况： SCI

摘要： Background: Caponization results in reduced androgen levels, which leads to abdominal fat accumulation in capons. In this study, we sought to understand the molecular mechanisms behind this fat accumulation. Results: Abdominal fat (AF) content increased significantly (P < 0.05) and serum and AF testosterone levels decreased significantly (P < 0.05 or P < 0.01) after caponization. In AF tissue, 90 differentially expressed genes related to lipid metabolism were screened by gene expression profiling in caponized and sham-treated chickens. Among these, six representative genes were significantly up-regulated (APOA1, SCD, FABP7, RXRG, and FADS2) or down-regulated (FABP3) (P < 0.05 or P < 0.01) and were strongly associated with the PPAR pathway. In addition, cell junction pathways were also enriched. In vitro, Fat content was significantly lower in cells treated with testosterone compared with control cells (P < 0.01), and mRNA levels of RXRG, FABP7, and FABP3 changed accordingly, confirming the effect of testosterone on fat deposition. Conclusions: The results of this study indicate that testosterone reduction likely regulates gene expression through PPAR and cell junction pathways resulting in increased fat accumulation. These results provide increase our understanding of the biological mechanisms by which caponization induces greater fat accumulation.

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