癌变·畸变·突变 ›› 2019, Vol. 31 ›› Issue (4): 319-322,330.doi: 10.3969/j.issn.1004-616x.2019.04.010

• 论著 • 上一篇    下一篇

邻苯二甲酸二(2-乙基己)酯对小鼠睾丸损伤及p-CREB蛋白表达的影响

薄存香, 张玉, 白金, 韩茹, 陈尚雅, 赛林霖   

  1. 山东省职业卫生与职业病防治研究院, 山东第一医科大学/山东省医学科学院, 山东 济南 250014
  • 收稿日期:2018-11-29 修回日期:2019-04-09 出版日期:2019-07-30 发布日期:2019-08-23
  • 通讯作者: 赛林霖,E-mail:sailinlin2009@163.com E-mail:sailinlin2009@163.com
  • 作者简介:薄存香,E-mail:bocunxiang@163.com。
  • 基金资助:
    山东省医药卫生科技发展计划项目(2016WS0539);山东省自然科学基金(ZR2017YL001);山东省科技攻关项目(2018GSF1182 12,2017GSF18142)

Effects of di-(2-ethylhexyl) phthalate on testicular injury and on expression of p-CREB in testes of mice

BO Cunxiang, ZHANG Yu, BAI Jin, HAN Ru, CHEN Shangya, SAI Linlin   

  1. Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250014, Shandong, China
  • Received:2018-11-29 Revised:2019-04-09 Online:2019-07-30 Published:2019-08-23

摘要: 目的:探讨邻苯二甲酸二(2-乙基己)酯(DEHP)对小鼠睾丸损伤及睾丸组织磷酸化环磷酸腺苷反应元件结合蛋白(p-CREB)表达的影响。方法:选用ICR初断乳雄性小鼠40只,随机分为对照组(玉米油)和DEHP染毒组(250、500、1 000 mg/kg),经口灌胃,1次/天,6天/周,连续8周,于末次染毒24 h后处死动物,称取睾丸、附睾质量计算脏器系数并进行精子计数,检测睾丸组织形态学改变,采用免疫组织化学SP法检测睾丸组织p-CREB蛋白的表达。结果:与对照组相比,250、500和1 000 mg/kg DEHP染毒组小鼠附睾脏器系数及精子计数均明显降低(P < 0.05),1 000 mg/kg组小鼠睾丸系数亦明显下降,差异有统计学意义(P < 0.05)。各DEHP染毒组小鼠睾丸曲细精管上皮细胞出现层次减少、排列疏松、紊乱等改变;随着染毒剂量升高,睾丸组织中p-CREB蛋白表达下降,DEHP 500和1 000 mg/kg组较对照组差异有统计学意义(P < 0.05)。结论:DEHP可致小鼠曲细精管生精上皮细胞损伤、精子数下降、p-CREB蛋白表达减少。

关键词: 邻苯二甲酸二(2-乙基己)酯, 睾丸, 生精功能, 磷酸化环磷酸腺苷反应元件结合蛋白

Abstract: OBJECTIVE:To investigate the effects of di-(2-ethylhexyl)phthalate (DEHP) on spermatogenic function and expression of p-CREB in testes of mice. METHODS:40 newly weaned ICR male mice were treated with DEHP by gavage in doses of 0,250,500,1 000 mg/kg,6 times a week for 8 consecutive weeks. The weights of testes,epididymis and sperm counts were determined. Histomorphology and expressions of p-CREB of testicle tissues were also analyzed. RESULTS:Results:Compared with the control group,the epididymis coefficient and sperm counting of DEHP treated groups were all reduced significantly (P < 0.05). The testicular coefficients were also decreased in the 1000 mg/kg group (P < 0.05). Pathological alterations of testes were also observed. Reduced seminiferous epithelium,loose and anomalistic organization were observed in all treatment groups. Sperm counts were reduced in the lumina of seminiferous tubules. p-CREB protein expressions were down-regulated in the 500 and 1 000 mg/kg exposure groups (P < 0.05). CONCLUSION:Our data show that exposure in mice to DEHP damaged epithelial cells of seminiferous tubule,decreased the number of spermatozoa and the expression of p-CREB protein.

Key words: di-(2-ethylhexyl)phthalate, testicle, spermatogenic function, p-CREB

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