[Effect of total saponins of Rubus parviflolius (TSRP) on change of hydrated amount and blood-brain barrier in rats during focal cerebral ischemic/reperfusion]

Ji-Sheng Wang, Zong-Yin Qiu, Hui-Zhi Li, Yong-Peng Xia, Cheng-Lin Zhou
Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica 2007, 32 (20): 2166-9

OBJECTIVE: To explore the effects of total saponins of Rubus parviflolius (TSRP) on brain edema and blood brain barrier in rats.

METHOD: The model of local cerebral ischemia was established in rats by reversible inserting a nylon thread into the anterior cerebral artery through the internal carotid artery brain hydrated amount and content change of Evan' s blue (EB) in cortex subjected to 2h middle cererbral artery occlusion (MACO) followed by 6 h, 24 h, 48 h, 72 h reperfusion and effect of TSRP. penetrability of blood brain-barrier (BBB) the index includes brain hydrated amount and penetrability of blood brain-barrier BBB.

RESULT: Com- pared with I/R group. Both brain hydrated amount and the EB content decreased significantly in TSRP groups on the 6 h, 24 h, 48 h, 72 h of reperfusion after 2 hour of cerebral ischemia induced by MACO model.

CONCLUSION: TSRP could decrease brain hydrated amount and markedly lower permeability of blood-brain barrier subjected to 2 h MACO followed by 24 h reperfusion, and this may be a mechanism of TSRP alleviating brain edema during I/R.

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