芦丁对肥胖诱发的雄性小鼠生殖损伤的保护作用

目的 探讨芦丁在肥胖雄性小鼠体质量抑制以及对肥胖诱发的生殖损伤的保护效果及其机制.方法 将24只雄性ICR小鼠随机分成3组,每组8只:正常对照组(ND组,正常饮食),高脂饮食组(HFD组,高脂饮食),芦丁保护组(HRU组,高脂饮食+芦丁).28 d后,按后续实验需要进行取材处理.试剂盒检测生化指标;睾丸与附睾进行石蜡切片,HE染色进行形态学观察;统计精子数、活动度和畸形率.荧光定量PCR检测相关基因的表达水平;Western blot检测Ucp1蛋白表达水平.结果 HRU组比HFD组的平均体质量轻.HFD组睾丸和附睾组织中的甘油三酯的含量以及附睾组织中的甘油三酯的含量,明显高于ND组和HRU组.相较于HFD组的睾丸和附睾均出现结构松散,细胞结构异常,管腔内成熟的精子数量较少的现象,精子数量下降,活动度差等问题,HRU组均有明显改善.解偶联蛋白Ucp1基因和蛋白的表达量在芦丁处理后显著上升(P<0.05),Mcp1和Tnfα的表达则显著下降(P<0.05).结论 芦丁可以有效抑制高脂诱导的肥胖小鼠体质量的快速增长,对肥胖诱发的生殖损伤有一定的保护效果.

Protective effects of rutin against obesity-induced reproductive impairment in male mice

Objective To study the effect of rutin on body weight and obesity-induced reproductive impairment in male mice. Methods Twenty-four male mice were randomized equally into normal control group, high-fat diet group (HFD group), and HFD+rutin intervention group (HRU group). After 28 days of treatments, the testes and epididymis of the mice were collected for detection of total cholesterol (TC) and triglycerides (TG) levels and for pathological examinations with HE staining. The expressions of related genes was detected with real-time PCR, and Western blotting was used to detect the expression of Ucp1 protein in the samples. Results After 28 days of treatments, the mean body weight was lower in mice with rutin intervention than in those in HFD group. The mice in HFD group showed significantly higher TG levels in the testis and epididymis and higher TC levels in the epididymis than those in the control and HRU groups. In HFD group, the testis and the epididymis displayed loosened structures with abnormalcell structure, and the number ofmature spermatozoa in the lumen was decreased and the mobility of the sperms was reduced; all these changes were significantly alleviated in HRU group. The expression levels of Ucp1 mRNA and protein increased (P<0.05) and the expressions of Mcp1 and TNF-α decreased significantly in the mice after rutin treatment (P<0.05). Conclusion Rutin can effectively inhibit rapid increase of body weight and protect against obesity-induced reproductive impairment in obese mice.