华西口腔医学杂志 ›› 2008, Vol. 26 ›› Issue (05): 560-562.

• 专栏论著 • 上一篇    下一篇

雌激素对大鼠咬肌热休克蛋白70表达的影响

李冰雁1,2,赵煜3,李晓箐1,易新竹1,王艳民1   

  1. 1.口腔疾病研究国家重点实验室,四川大学,四川成都610041;2.南方医科大学珠江医院口腔科,广东广州510282;3.中山大学光华口腔医学院·附属口腔医院修复科,广东广州510055
  • 收稿日期:2008-10-25 修回日期:2008-10-25 出版日期:2008-10-20 发布日期:2008-10-20
  • 通讯作者: 王艳民,Tel:028-85502415
  • 作者简介: 李冰雁(1972-),男,北京人,主治医师,硕士
  • 基金资助:

    四川省科技攻关资助项目(2006Z08-005);四川大学青年科学研究基金资助项目(JS20051230506237)

Effect of estrogen on heat shock protein 70 expression in rat masseter muscle

LI Bing-yan1,2, ZHAO Yu3, LI Xiao-qing1, YI Xin-zhu1, WANG Yan-min1   

  1. 1. State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China; 2. Dept. of Stomatology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; 3. Dept. of Prosthodontics, Guanghua College of Stomatology, Sun Yat-Sen University, Guangzhou 510055, China
  • Received:2008-10-25 Revised:2008-10-25 Online:2008-10-20 Published:2008-10-20
  • Contact: WANG Yan-min,Tel:028-85502415

摘要:

目的探讨雌激素对大鼠咬肌热休克蛋白(HSP)70表达的影响。方法将60只雌性未孕12周龄Sprague-Dawley大鼠随机分成3组,每组20只。假手术组大鼠在轻微骚动卵巢后缝合,去卵巢组大鼠去除卵巢后缝合,雌激素替代组大鼠去卵巢后接受雌二醇替代治疗。在实验的第4周和8周,每组各处死10只大鼠,采用免疫组织化学方法研究雌激素对大鼠咬肌HSP70表达的影响。结果4周时3组大鼠咬肌HSP70的表达无明显差异(P>0.05);8周时去卵巢组大鼠HSP70的表达下降,与假手术组、雌激素替代组之间的差异有统计学意义(P<0.05),而假手术组与雌激素替代组之间的差异无统计学意义(P>0.05)。结论雌激素水平降低会导致大鼠咬肌HSP70的表达下降,雌激素替代疗法可以预防HSP70表达降低。

关键词: 雌激素, 热休克蛋白70, 咬肌

Abstract:

Objective To investigate the effect of estrogen on heat shock protein(HSP) 70 expression in rat masseter muscle. Methods Sixty twelve-week-old female Sprague-Dawley rats were randomly divided into three groups: Sham surgery group(control group), ovariectomy group(OVX group), ovariectomy with estradiol valerate replacement treatment group(OVX/EV group). Half of the animals were sacrificed at 4 and 8 weeks respectively, then the masseter muscle was removed. Immunohistochemistry(IHC) method was employed to study the HSP70 expression in masseter muscle. Results Compared to control group and OVX/EV group, the expression of HSP70 was significantly lower at 8 weeks in OVX group(P<0.05). There were no significantly difference between the HSP70 expression of control group and that of OVX/EV group. Conclusion Estrogen may affect HSP70 expression in rat masseter muscle, and estrogen replacement therapy may prevent HSP70 reduction.

Key words: estrogen, heat shock protein 70, masseter muscle