天津医药 ›› 2023, Vol. 51 ›› Issue (4): 376-381.doi: 10.11958/20221083

• 实验研究 • 上一篇    下一篇

高尿酸血症对小鼠生精功能和精子质量的影响及其机制

江晓翠(), 田代志, 赵敏, 龚健, 余何, 姜兴宇, 萧闵()   

  1. 湖北中医药大学中医药实验中心(邮编430065)
  • 收稿日期:2022-07-08 修回日期:2022-11-10 出版日期:2023-04-15 发布日期:2023-04-20
  • 通讯作者: 萧闵 E-mail:280185855@qq.com;531637551@qq.com
  • 作者简介:江晓翠(1989),女,实验师,博士在读,主要从事动物模型及中西医结合防治不孕不育方面研究。E-mail:280185855@qq.com
  • 基金资助:
    国家自然科学基金青年项目(82104704);2021年度湖北省教育厅重点项目(D20212001)

Effects and mechanism of hyperuricemia on spermatogenesis and sperm quality in mice

JIANG Xiaocui(), TIAN Daizhi, ZHAO Min, GONG Jian, YU He, JIANG Xingyu, XIAO Min()   

  1. Experimental Center of Chinese Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
  • Received:2022-07-08 Revised:2022-11-10 Published:2023-04-15 Online:2023-04-20
  • Contact: XIAO Min E-mail:280185855@qq.com;531637551@qq.com

摘要:

目的 探讨高尿酸血症(HUA)通过氧化损伤诱导睾丸细胞凋亡、降低小鼠生精功能和精子质量的机制。方法 36只雄性昆明小鼠随机分6组:氧嗪酸钾1 d、7 d、14 d组,对照1 d、7 d、14 d组。其中氧嗪酸钾组腹腔注射氧嗪酸钾悬液600 mg/(kg·d)。生化法检测血清尿酸(UA)、肌酐(Cre)、尿素氮(BUN)、丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)、黄嘌呤氧化酶(XO)和睾丸组织超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、丙二醛(MDA);HE染色法观察肝、肾、睾丸组织病理学变化并对睾丸HE切片进行生精功能评分;全自动精子分析仪检测精子密度和活动率;蛋白免疫印迹法检测睾丸组织B淋巴细胞瘤-2(Bcl-2)、Bcl-2相关蛋白X(Bax)、胱天蛋白酶3(Caspase-3)的表达。结果 与各自对照组比较,氧嗪酸钾1 d组UA升高,氧嗪酸钾7 d组UA、BUN、AST、XO均升高,氧嗪酸钾14 d组UA、BUN、AST均升高(均P<0.01)。氧嗪酸钾7 d、14 d组肝、肾组织形态均有病变,氧嗪酸钾7 d组较14 d组轻微。与对照7 d组比较,氧嗪酸钾7 d组睾丸组织有明显病变,生精功能、精子密度和活动率降低(P<0.05),MDA含量升高,SOD、CAT活性降低(P<0.05),Bax、Caspase-3蛋白表达量及Bax/Bcl-2比例上升(P<0.05),Bcl-2蛋白表达量下降(P<0.05)。结论 HUA小鼠生精功能和精子质量降低,其机制可能为睾丸氧化损伤诱导细胞凋亡。

关键词: 高尿酸血症, 睾丸, 精液分析, 精子发生, 氧化性应激, 细胞凋亡

Abstract:

Objective To investigate the mechanism of hyperuricemia (HUA) inducing testicular cell apoptosis and reducing spermatogenesis and sperm quality in mice through oxidative damage. Methods Thirty-six Kunming male mice were divided into 6 groups by random number method: the potassium oxyazinate groups for 1 d, 7 d and 14 d, and the control groups for 1 d, 7 d and 14 d. The potassium oxyazinate group was intraperitoneally injected with potassium oxyazinate suspension 600 mg/(kg·d). Serum levels of uric acid (UA), creatinine (Cre), urea nitrogen (BUN), alanine aminotransferase (ALT), aspartate aminotransferase (AST), xanthine oxidase (XO), and superoxide dismutase (SOD), catalase (CAT), malondialdehyde (MDA) in testicular tissue were detected by biochemical method. Eosin-hematoxylin (HE) staining was used to observe histopathological changes of liver, kidney and testis, and the spermatogenic function of testicular HE sections was scored. Automatic sperm analyzer detected sperm density and motility rate. The expression levels of B-cell lymphoma-2 (Bcl-2), Bcl-2 associated X protein (Bax) and Caspase-3 protein in testicular tissue were detected by Western blotting. Results Compared with the control group, UA was significantly increased in the potassium oxazinate 1 d group (P<0.01). The levels of UA, BUN, AST and XO were significantly increased in the potassium oxazinate 7 d group (P<0.01). The levels of UA, BUN and AST were significantly increased in the potassium oxazinate 14 d group (P<0.01). The pathological changes in liver and kidney tissue were observed in the potassium oxazinate 7 d and 14 d groups, and the lesion was milder in the potassium oxazinate 7 d groug than that of the potassium oxazinate 14 d group. Compared with the control 7 d group, there were obvious pathological changes and significantly decreased spermatogenic function in the potassium oxazinate 7 d group (P<0.01). The content of MDA was significantly increased (P<0.05), while the activities of SOD and CAT were significantly decreased (P<0.05). The protein expression levels of Bax and Caspase-3 were significantly increased (P<0.05), the ratio of Bax to Bcl-2 was also increased (P<0.05), and the protein expression level of Bcl-2 was significantly decreased (P<0.05). Conclusion The spermatogenic function and sperm quality are decreased in HUA mice, which may be caused by testicular oxidative damage induced apoptosis.

Key words: hyperuricemia, testis, semen analysis, spermatogenesis, oxidative stress, apoptosis

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