Puerarin Injection On The Surgical Microscope Induced Retinal Acute Light Damage Bax, Bcl-2 Expression In Experimental Research

Objective.To approach the protection and its mechanism of Puerarin against retinal damage by light.Methods:Observed the histomorphplogy changes of outer nuclear layer and detected the regulatory factors of apoptosis Bax,Bcl-2,Bcl-2/Bax and Caspase-3.Result:①In histomorphplogy,the model group's became thinner compared normal group's and cell arrangement was raritas,internal and external segments arrangement was disordered,and the demarcation wasn't distinct,the differences had statistical significance compared normal group's(P＜0.05).Low-dose group's had improvation compared model group's,the outer nuclear layer of retina become thicker,the cell are closely,the differences had statistical significance compared model group's(P＜0.05).High-dose group's had no obvious improvement compared model group the differences had no statistical significance compared model group's(P＞0.05)②In expression of regulating apoptosis of Bax,Bcl-2,Caspase-3 factors,after light postinjury,the expression of Bax,Caspase-3 in outer nuclear layer kytoplasm of model group's reinforced, expression of Bcl-2 and the ratio of Bcl-2/Bax weakened,the differences had statistical significance compared normal group's(P＜0.05).Low-dose group's decreased,expression of Bcl-2 and the ratio of Bcl-2/Bax reinforced,the difference had statistical significance compared model group's(P＜0.05). High-dose group's Bax,Caspase-3 reinforced,Bcl-2 and the ratio of Bcl-2/Bax weakened,the differences had no statistical significance compared model group's(P＞0.05)Conclusions:Low-dose Pue could release the photic injury in retina,accelerate the renovation of retina after light exposure.The mechanism might relate to control the expression of Bax,Bcl-2,Bcl-2/Bax and Caspase-3 and suppresse photosensory cell apoptosis.