Journal of Capital Medical University ›› 2013, Vol. 34 ›› Issue (6): 879-884.doi: 10.3969/j.issn.1006-7795.2013.06.019

Previous Articles     Next Articles

Effects of hydroxysafflor yellow A on expression of MMP-9 and claudin-5 in cerebral ischemic/reperfusion rats

QI Zhifeng, SHI Wenjuan, YAN Feng, LUO Yumin, LIU Kejian   

  1. Cerebrovascular Diseases Research Institute, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
  • Received:2013-07-16 Online:2013-12-21 Published:2013-12-13
  • Supported by:

    This study was supported by the National Natural Science Foundation of China(81171242,81200928).

Abstract:

Objective Hydroxysafflor yellow A(HSYA) is the water-extracted fraction from the flower of the safflower plant(C tinctorius), a traditional medicine, which has been used to treat ischemic diseases with a long history. Recent studies in rodents suggested that HSYA may reduce the blood brain barrier(BBB) permeability during acute cerebral ischemic/reperfusion. However, the mechanisms in BBB protection afforded by HSYA are still unclear. Methods In this study, we investigated the changes in protein level of matrix metalloproteinase-9(MMP-9) and tight junction protein claudin-5 in HSYA treatment on a 90 min-ischemia/72 h-reperfusion rat model, which mimics the possible clinical application for acute ischemic stroke patients. Results Western blotting indicated that HSYA reduced the MMP-9 level but increased the level of claudin-5 in penumbral tissue. However, there is no significant change in MMP-9 and claudin-5 level in ischemic core. Conclusion The reduction of MMP-9 and elevation of claudin-5 in penumbral might be involved in HSYA afforded BBB protection on ischemic/reperfusion model of rats.

Key words: cerebral ischemia, hydroxysafflor yellow A, metalloproteinase-9, claudin-5, blood brain barrier

CLC Number: