Retinal ischemia-reperfusion injury and pretreatment with Lycium barbarum glycopeptide  

作　　者：Yan-Xia Wu Shuo Yin Shan-Shan Song Xiang Liu Yu-Xuan Deng Xue-Jing Lu 

机构地区：[1]Eye School of Chengdu University of Traditional Chinese Medicine,Chengdu 610075,Sichuan Province,China [2]Ineye Hospital of Chengdu University of Traditional Chinese Medicine,Chengdu 610084,Sichuan Province,China [3]School of Chinese Classics,Chengdu University of Traditional Chinese Medicine,Chengdu 610075,Sichuan Province,China [4]Key Laboratory of Sichuan Province Ophthalmopathy Prevention&Cure and Visual Function Protection with Traditional Chinese Medicine,Chengdu 610075,Sichuan Province,China [5]Retinal Image Technology and Chronic Vascular Disease Prevention&Control and Collaborative Innovation Center,Chengdu 610075,Sichuan Province,China

出　　处：《International Journal of Ophthalmology(English edition)》2024年第9期1599-1605,共7页国际眼科杂志（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.82174444);the Chengdu University of Traditional Chinese Medicine Xinglin Scholar Discipline Talent Research Promotion Program Project(No.XKTD2022009);the Inheritance and Communication Department of Science and Technology Innovation Engineering Department of Chinese Academy of Chinese Medical Sciences(No.XJ2023001701).

摘　　要：AIM:To investigate the antioxidant protective effect of Lycium barbarum glycopeptide(LbGP)pretreatment on retinal ischemia-reperfusion(I/R)injury(RIRI)in rats.METHODS:RIRI was induced in Sprague Dawley rats through anterior chamber perfusion,and pretreatment involved administering LbGP via gavage for 7d.After 24h of reperfusion,serum alanine aminotransferase(ALT),aspartate aminotransferase(AST),and creatinine(CREA)levels,retinal structure,expression of Caspase-3 and Caspase-8,superoxide dismutase(SOD)activity,and malondialdehyde(MDA)in the retina were measured.RESULTS:The pretreatment with LbGP effectively protected the retina and retinal tissue from edema and inflammation in the ganglion cell layer(GCL)and nerve fiber layer(NFL)of rats subjected to RIRI,as shown by light microscopy and optical coherence tomography(OCT).Serum AST was higher in the model group than in the blank group(P=0.042),but no difference was found in ALT,AST,and CREA across the LbGP groups and model group.Caspase-3 expression was higher in the model group than in the blank group(P=0.006),but no difference was found among LbGP groups and the model group.Caspase-8 expression was higher in the model group than in the blank group(P=0.000),and lower in the 400 mg/kg LbGP group than in the model group(P=0.016).SOD activity was lower in the model group than in the blank group(P=0.001),and the decrease was slower in the 400 mg/kg LbGP group than in the model group(P=0.003).MDA content was higher in the model group than in the blank group(P=0.001),and lower in the 400 mg/kg LbGP group than in the model group(P=0.016).The pretreatment with LbGP did not result in any observed liver or renal toxicity in the model.CONCLUSION:LbGP pretreatment exhibits dosedependent anti-inflammatory,and antioxidative effects by reducing Caspase-8 expression,preventing declines of SOD activity,and decreasing MDA content in the RIRI rat model.

关 键 词：retinal ischemia-reperfusion Lycium barbarum glycopeptide PRETREATMENT ANTI-INFLAMMATORY ANTIOXIDATIVE RAT 

分 类 号：R774.1[医药卫生—眼科]