The adaptive responses of different adipose tissues to cold stress in mice
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    Abstract:

    Objective:This study aims to clarify the similarities and differences of adaptive responses of different adipose tissues in C57BL/6J mice to cold stress. Methods:Mice were divided into two groups,the control group which were housed under room temperature individually and the cold stress group were housed under 6 ℃. Body weight,food intake and adipose tissue weight were measured. Adipose tissue morphology were observed by HE staining. The genes related to browning,mitochondrial function were quantified by qRT-PCR. The proteins related to thermogenesis were detected by Western blot. Adipose tissue sympathetic innervation was shown by IHC staining. Macrophages polarization were tested by flow cytometry. Results:Thermogenic gene Ucp-1 expression were most abundant in brown adipose tissues but could not be promoted by cold. By contrast,thermogenic gene expression could be stimulated by cold stress in beige adipose tissue in both mRNA and protein levels. Simultaneously,sympathetic innervation and macrophages M2 polarization could be induced in both brown and beige adipose tissue. Conclusion:Cold stress could promote sympathetic innervation and macrophage M2 polarization in beige adipose tissue which could induced browning. And cold stimulation has minimal role in regulating visceral white adipose tissues regarding themogenic gene expression and macrophage polarization.

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耿 蓉,罗 岩,孙 翠,向李倩,刘 煜.小鼠不同脂肪组织对冷应激的适应性反应[J].南京医科大学学报(自然科学版英文版),2022,42(6):809-814.

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  • Received:February 11,2022
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  • Online: June 21,2022
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