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  • Title: [Comparison of effect of Astragalus membranaceus and huoxuefang on thromboxane, prostacyclin and adenosine cyclic monophosphate in cerebral reperfusion injury in rabbits].
    Author: Deng CQ, Ge JW, Wang Q.
    Journal: Zhongguo Zhong Xi Yi Jie He Za Zhi; 1995 Mar; 15(3):165-7. PubMed ID: 7647534.
    Abstract:
    The cerebral ischemia rabbit model was made by using the occlusion of four vessels. The results showed that TXB2 and cAMP contents in brain tissues and the latter in plasma markedly increased (P < 0.05, P < 0.01), the 6-keto-PGF1 alpha in brain tissues significantly lowered (P < 0.05) in ischemia formed 30 minutes and 45 minutes after reperfusion. After intravenous injection of Astragalus membranaceus (AM) extracts (3.3 g/kg), Huoxuefang (HXFO and Yiqi Houxue Fang (YQHXF) consisted of AM and HXF before ischemia, the marked increase of TXB2 contents after reperfusion was inhibited (P < 0.05) and the 6-keto-PGF1 alpha in brain tissues after reperfusion were increased (P < 0.01) in HXF and YQHXF group, which change the AM extracts didn't have (P < 0.05). HXF could markedly inhibit the increase of cAMP in brain tissues after reperfusion P < 0.05), while the AM extracts and YQHXF couldn't (P > 0.05). All above-mentioned suggested that the above-mentioned suggested that the balance disorder of TXA2/PGI2 in brain tissues might participate in the occurrence of cerebral reperfusion injury and YQHXF might act against this injury by means of improving the balance of TXA2/PGI2 in brain tissues, which was mainly released by HX drugs of it.
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