ABSTRACT
Objective To study the effects and significance of thrombexane -B_2(TXB_2)and six-ketone-prostaglandin(6-k-PG)F1 α levels in the primary type of hyper-acute cerebral infarction with different sensitivities to aspirin.Methods Sixty-three patients with primary type of hyper-acute cerebral infarction were divided into three groups based on their sensitivities to aspirin:aspirin resistance(AR)group,aspirin semiresistance(ASR)group,aspirin sensitivity(AS)group.TXB_2 and 6-k-PGF1α levels were measured,compared and analyzed in the three groups before and two weeks after taking aspirin(100 mg/d).Results The total effective rate in AS group[87.0%(20/23)]was significantly higher than that in ASR group[55.0%(11/20)]and AR group[30.0%(6/20)](P<0.05).There was no significant difference of TXB_2 and 6-k-PGF1 α among the three groups before taking aspirin.After taking aspirin for two weeks,TXB_2 leveh in all the three groups were lower than those before making aspirin(P<0.01),6-k-PGF1α levels in all the three groups were higher than those before taking aspirin(P<0.01).Conclusions Aspirin can decrease the TXB_2 concentration and increase the 6-k-PGF1α concentration of the primary hyper-acute cerebral infarction. It may be reduce the risks of re-infarction after the primary acute infarction. Monitoring the concentration of TXB_2 and 6-k-PGF1α can be helpful to evaluate rehabilitation prognosis.