Protection of Shuxuetong combined with aspirin against cerebral ischemia/reperfusion injury through ameliorating coagulation and fibrinolysis system

Objective: To explore the influence of the combination of Shuxuetong (SXT) and aspirin on coagulation and fibrinolytic system of rats. Methods: Suture method was applied to establish focal cerebral ischemia-reperfusion injury models in rats. SD rats were randomly divided into sham group, middle cerebral artery occlusion/reperfusion (MCAO/R) group, aspirin group, SXT group, and SXT + aspirin group (S&A). The neurological deficits were assessed according to Longa's grade 5 scoring method. The cerebral edema was detected by measuring the content of water in brain tissue. The volume of cerebral infarction was observed by 2,3,5-Triphenyltetrazolium chloride (TTC) staining. Blood plasma was collected by abdominal aortic method to test maximum platelet aggregation rate and four blood coagulation. CD61, CD62p, 6-keto prostaglandin F1 alpha (6-keto-PGF1 alpha), antithrombin III (AT-III), D-dimer, plasminogen activator inhibitor-1 (PAI-1), tissue factor (TF), tissue plasminogen activator (t-PA), platelet thromboxane B-2 (TXB2), and von Willebrand factor (vWF) content in rat plasma were detected by ELISA. Results: SXT combined with aspirin could improve the neurological deficits, alleviate cerebral edema, and decrease the cerebral infarct value. Compared with the sham operation group, fibrinogen (FIB), 6-PGF1 alpha, AT-III, and t-PA in model group were significantly decreased; Compared with the model group, the above-mentioned indexes in SXT and aspirin treatment group were significantly increased. The prothrombin time (PT), activated partial thromboplastin time (APTT), thrombin time (TT), D-dimer, PAI-1, TF, TXB2, and vWF of the model group were significantly increased; The above-mentioned indexes in blood SXT+ aspirin treated group were significantly decreased. There was a significant difference between the combined group and SXT group. The maximum concentration of plateletsin aspirin treated rats was significantly decreased, however, MPAR was reversed in SXT+ aspirin treated group. Conclusion: SXT combined with aspirin can effectively inhibit platelet activation, regulate the maximum concentration of platelets, and improve coagulation function and fibrinolysis system. (C) 2018 Tianjin Press of Chinese Herbal Medicines. Published by Elsevier B.V. All rights reserved.