Expression and role of PN-1, thrombin and PAR-1 in rats brain edema tissue after intracerebral hemorrhage / 中国生化药物杂志

ABSTRACT

Objective To investigate expression and role of protease catenin-1(PN-1), thrombin(thrombin), protease activated receptor-1(PAR-1) in rats brain edema tissue after intracerebral hemorrhage(ICH).Methods Adult male SD rats 80 were randomly divided into sham group,ICH group after number, 40 in each group, ICH group autologous arterial method of making a rat model of experimental ICH in the right caudate nucleus unit injection.The degree of neurological dysfunction between 2 groups was evaluated at 12 h,24 h and 120 h after post-operation.Observed the morphology of brain cells by HE staining.Changes of PN-1,thrombin, PAR-1 index in rat brain tissue at 3,6,10,12,24,48 and 120 h were detected by Western blot.Results Neurological dysfunction score ICH rats after modeling 12,48,120 h were significantly lower than the sham group(P<0.05);ICH in rats after modeling 3,6,10,12,24,48 and 120 h of brain tissue PN-1, thrombin, PAR-1 compared with sham-operated group were significantly increased (P<0.05); ICH rat brain tissue PN-1, thrombin, PAR-1 appeared in 12 h after modeling shwed a gradual downward trend (P<0.05). Conclusion ICH hematoma surrounding brain tissue in rats PN-1 has the effect of inhibiting thrombin and PAR-1 overexpression, cause nerve damage.