天然产物研究与开发 ›› 2018, Vol. 30 ›› Issue (12): 2187-2192.doi: 10.16333/j.1001-6880.2018.12.024

• 开发研究 • 上一篇    下一篇

单环刺螠糖胺聚糖抗大鼠血小板聚集效应研究

苗飞,赵紫越,崔青曼*,袁春营   

  1. 天津市海洋环境保护与修复技术工程中心 天津市海洋资源与化学重点试验室 天津科技大学海洋与环境学院,天津 300457
  • 出版日期:2019-01-02 发布日期:2019-01-02
  • 基金资助:

    天津市自然基金重点项目(16JCZDJC33800)

Anti-platelet Aggregation Effect of Glycosaminoglycan from Urechis unicinctus in Rats

MIAO Fei, ZHAO Zi-yue, CUI Qing-man*, YUAN Chun-ying   

  1. Tianjin Marine Environmental Protection and Restoration Technology Engineering Center;Tianjin Key Laboratory of Marine Resource and Chemistry;College of Marine & Environment,Tianjin University of Science and Technology,Tianjin 300457
  • Online:2019-01-02 Published:2019-01-02

摘要: 本文研究了单环刺螠糖胺聚糖影响大鼠血小板聚集的效应与机制。采用比浊法测定大鼠血小板最大聚集百分率,双波长Fura-2荧光法测定大鼠血小板内钙离子浓度,激光扫描共聚焦显微镜检测了大鼠血小板中的钙离子水平;酶联免疫吸附法测定大鼠血小板内环磷酸腺苷(cAMP)、血浆血栓素B2(TXB2)和6酮前列腺素F1α及血小板膜糖蛋白GPⅡb/Ⅲa的浓度。结果表明:单环刺螠糖胺聚糖能够显著降低大鼠血小板的最大聚集率(P<0.01),显著降低血小板内的钙离子浓度(P<0.01),显著升高大鼠血小板cAMP浓度(P<0.01),显著降低血浆中的TXB2浓度(P<0.05),显著升高大鼠血浆中的6酮前列腺素F1α浓度(P<0.01),显著降低血小板膜糖蛋白的浓度(P<0.05)。该研究初步揭示了单环刺螠糖胺聚糖抗大鼠血小板聚集的机制,为该糖胺聚糖的进一步利用奠定科学基础。

关键词: 单环刺螠, 糖胺聚糖, 抗血小板聚集效应

Abstract: The effect and mechanism of glycosaminoglycan from Urechis unicinctus on platelet aggregation in rats were studied.The maximum aggregation percentage of platelets in rats was determined using turbidimetric method,and calcium ion concentration in rat platelets was determined using Fura-2 dual wavelength fluorescence method,and laser scanning confocal microscope was used to detect the level of calcium in rat platelets;Concentrations of rat platelets cAMP,plasma TXB2, 6-keto prostaglandin F1α and platelet glycoprotein (GPIIb/IIIa) were determined with enzyme linked immunosorbent assay.The results showed that glycosaminoglycan from Urechis unicinctus could significantly reduce maximum aggregation rate in rat platelets (P<0.01),significantly reduce calcium ion concentration in platelets (P<0.01),significantly increase cAMP concentration in rat platelets (P<0.01),significantly decrease the concentration of TXB2 in plasma (P<0.05),significantly increase 6 keto prostaglandin F1α concentration in rat plasma (P<0.01),and significantly decrease the concentration of platelet glycoprotein (P<0.05).The mechanism of anti-platelet aggregation in rat of glycosaminoglycan from U.unicinctus was preliminarily revealed in this study,which laid a scientific basis for the further utilization of the glycosaminoglycan.

Key words: Urechis unicinctus, glycosaminoglycan, antiplatelet aggregation effect

中图分类号: 

R961 S38