ABSTRACT
Objective To explore the relationship of the expression, regulation and adhesion of PTA1 in pregnancy induced hypertension(PIH). Methods The expression,regulation and adhesion of PTA1 on vascular en- dothelial cells incubated by sera from 10 PIH patients and 10 normal pregnant women repectively was detected by flow cytometry. Results The positive rate of PTA1 15.51% (24h) and 6.32 % (48h) in PIH group is significantly higher than that 7.81% (24h) and 4.72 % (48h) in normal pregnant woman group( P < 0.01 ). After the incubation with platelets,the positive rate of PTA1 6.64% (24h) and 4.13% (48h) in PIH group is lower than before(P< 0.05). The PTA1 expression 8.11% (24h) and 4.28% (48h) in PIH group is much lower after blocking with PTA1/IgG than that before(P < 0.01 ). Conclusion There are some abnormal stimulated factors in PIH patients, which activate vascular endothelial cells. PTA1 plays an important role in the adhesion of platelets to vascular en- dothelial cells, PTA1 is closely related to the progress of PIH which indicates that PTA1 directly or indirectly takes part in the pathophysiologic consequences of PIH.