J4 ›› 2010, Vol. 36 ›› Issue (3): 461-464.

• 基础研究 • 上一篇    下一篇

Sak衍生体对高血脂大鼠血小板功能的影响及其作用机制

 戴建威1, 徐东刚2, 龙民慧2,3   

  1. 1. 广州医学院生物化学教研室, 广东 广州 510182;2.军事医学科学院基础医学所, 北京 100850;3. 华南师范大学体育科学学院|广东 广州 510631
  • 收稿日期:2009-12-15 出版日期:2010-05-28 发布日期:2010-05-28
  • 通讯作者: 龙民慧 (Tel: 020-81340335, E-mail: longminhui2006@yahoo.com.cn) E-mail:longminhui2006@yahoo.com.cn
  • 作者简介:戴建威 (1979-)|男|广东省广州市人,理学博士|主要从事血液分子生物学方面研究。
  • 基金资助:

    国家自然科学基金资助课题(30279480)

Effect of Sak deveration on function of platelets in hyperlipemia rats and its mechanism

 DAI Jian-Wei1, XU Dong-Gang2, LONG Min-Hui2,3   

  1. 1.Department of Biochemistry, Guangzhou Medical College, Guangzhou 510182, China;2.Institute of Basic Medical Sciences, Academy of Military Medical Science, Beijing 100730, China|3.School of Physical Education &|Sports Science, South China Normal University, Guangzhou 510631, China
  • Received:2009-12-15 Online:2010-05-28 Published:2010-05-28

摘要:

目的: 观察Sak衍生体对高血脂大鼠血小板功能的影响并探讨其作用机制。方法: 30只Wistar大鼠制备高脂大鼠模型,随机分为药物组、高脂组及正常对照组。药物组大鼠尾静脉注射Sak衍生体进行干预,剂量为0.5 mg?kg-1,隔天注射,共15次;其他两组大鼠注射生理盐水作为对照,在给药前和最后一次给药24 h后采血,检测各组大鼠的血小板黏附率和二磷酸腺苷二钠(ADP)诱导的血小板聚集率;采用放免法检测血小板中钙调蛋白(CaM)含量以及ADP诱导的血小板聚集时血栓素(TXA2)的释放量。结果:与高脂组大鼠比较,药物组高脂大鼠血小板黏附功能及ADP诱导的血小板聚集率明显降低(分别是63.5%±6.71%与44.7%±8.13%,P<0.05;91.56%±9.01%与81.22%±3.45%,P<0.05),血小板中CaM含量与TXA2的释放量明显降低(P<0.05或P<0.01)。结论:Sak衍生体通过对引起血小板活化途径的干预,抑制血小板的黏附及聚集。

关键词: Sak衍生体;血小板;高脂血症

Abstract:

Abstract:Objective To study the effect of staphylokinase derivation (SakD) on the function of platelet in hyprlipemia rats and its mechanism. Methods 30 Wistar rats were randomly divided into 3 group: SakD group, hyperlipemia group and  normal diet group (n=10). The rats in SakD group received SakD i.v. for 15 times (0.5 mg?kg-1, once every other day) respectively, and the rats in other  two groups received normal saline in the same way after 8 weeks feeding. The blood samples were collected before administration and 24 h after the last injection. Then the platelet adhesion rate and the adenosine diphosphate(ADP)-induced platelet aggregation rates in various groups were detected, the contents of calmodulin (CaM) and thromboxane(TXA2)in platelet were measured with radioimmunoassay. Results Compared with hyperlipemia group,the adhesion platelet function and ADP-induced platelet aggregation of hyperlipemia  rats in SaKD group was significantly decreased(63.5%±6.71% and 44.7%±8.13%,  respectively, P<0.05;91.56%± 9.01% and  81.22%±3.45%, P<0.05), the releasing of platelet TXA2 and CaM content in platelet were significantly reduced (P<0.05 or P<0.01) Conclusion SakD can suppress  the platelet agglutination and adhesion by intervention of different pathways of platelet activation.

Key words: staphylokinase derivation, platelet, hyperlipemia

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