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邻苯二甲酸二(2-乙基己)酯对大鼠卵巢病理和超微结构的影响

谭  琴1,2,秦逍云1,2,徐新云2,*,张  倩2,马  佺1,2,杨细飞2,吴德生2,蒋灵芝1,周  丽2,刘建军2,黄海燕2,杨淋清2,黄新凤2,黄冠琴2   

  1. 深圳大学生命科学学院,广东  深圳518060
  • 收稿日期:2014-06-18 修回日期:2014-09-02 出版日期:2014-09-30 发布日期:2014-09-30
  • 通讯作者: 徐新云,E-mail:xyxu2008@163.com
  • 作者简介:谭 琴(1989- ),女,湖北人,硕士研究生,研究方向:分子生物学。E-mail:tan1031984251@qq.com
  • 基金资助:

    广东省科技计划项目(2013B021800032)

Pathological damage and ultrastructure changes in female rat ovary induced by di(2-ethylhexyl) phthalate

TAN Qin1,2,QIN Xiao-yun1,2,XU Xin-yun2,*,ZHANG Qian2,MA Quan1,2,YANG Xi-fei2,WU De-sheng2,JIANG Ling-zhi1,ZHOU Li2,LIU Jian-jun2,HUANG Hai-yan2,YANG Lin-qing2,HUANG Xin-feng2,HUANG Guan-qin2   

  1. School of Life Science, Shenzhen University, Shenzhen 518060
  • Received:2014-06-18 Revised:2014-09-02 Online:2014-09-30 Published:2014-09-30

摘要:

目的: 探讨邻苯二甲酸二(2-乙基己)酯(DEHP)对大鼠卵巢病理和超微结构的影响,评价DEHP对雌性大鼠的生殖毒性作用。方法:SPF级5周龄雌性SD大鼠40只,随机分为对照组(玉米油)、DEHP低剂量组(100 mg/kg)、DEHP中剂量组(500 mg/kg)和DEHP高剂量组(1 500 mg/kg),每组10只,每天灌胃1次,每周5次,连续染毒6周。染毒结束后称量大鼠体质量及卵巢质量,计算卵巢脏器系数;光镜下观察大鼠卵巢病理改变;电镜观察卵巢颗粒细胞超微结构的变化。结果:各染毒组大鼠体质量与对照组比较差异均无统计学意义(P均>0.05),高剂量组卵巢质量和脏器系数较对照组明显增加(P<0.01);普通光学显微镜检查发现DEHP处理后卵巢组织卵泡结构受损,电镜观察发现DEHP处理后颗粒细胞线粒体肿胀、线粒体嵴减少、胞浆空泡化、核染色质完全凝聚、出现凋亡小体、细胞变性坏死。结论:DEHP对大鼠卵巢毒性明显,影响卵泡发育,引起颗粒细胞凋亡。

关键词: 邻苯二甲酸二(2-乙基己)酯, 卵巢, 卵泡, 颗粒细胞, 超微结构, 生殖毒性

Abstract:

OBJECTIVE: To explore the pathological damage and ultrastructure changes in female rat ovary when rats were treated with di(2-ethylhexyl) phthalate (DEHP),to assess the toxicity of DEHP in female reproduction. METHODS:40 female SD rats were randomly divided into control group (corn oil),DEHP low dose group (100 mg/kg),DEHP medium dose group (500 mg/kg ),DEHP high dose group (1 500 mg/kg). The rats were treated with DEHP by gavage for 6 weeks. Rat body weight and ovary wet weight and ovary coefficients were calculated,the ovarian pathology was studied after HE staining,the ultrastructure changes in granulose cells were examined through electron microscopy. RESULTS:The ovarian weight and ovary coefficients were increased in DEHP high dose group. Pathological changes showed ovarian follicle damage,loose granular cell structure, follicular atresia after DEHP treatment. We also found mitochondria swollen, mitochondrial cristae decreased, cytoplasmic vacuolation, nuclear chromatin condensation,apoptotic bodies present,cell degeneration and necrosis in DEHP treated groups. CONCLUSION:DEHP could affect follicular development,induce granulose cell apoptosis in female rats,and subsequently causing reproductive toxicity.

Key words: di(2-ethylhexyl) phthalate, ovary, ovarian follicles, granulose cells, ultrastructure, reproductive toxicity