Retinal ischemia-reperfusion injury and pretreatment with Lycium barbarum glycopeptide

被引:2
作者
Wu, Yan-Xia [1 ,2 ]
Yin, Shuo [1 ,2 ]
Song, Shan-Shan [3 ]
Liu, Xiang [1 ]
Deng, Yu-Xuan [1 ]
Lu, Xue-Jing [1 ,2 ,4 ,5 ]
机构
[1] Chengdu Univ Tradit Chinese Med, Eye Sch, Chengdu 610075, Sichuan, Peoples R China
[2] Chengdu Univ Tradit Chinese Med, Ineye Hosp, Chengdu 610084, Sichuan, Peoples R China
[3] Chengdu Univ Tradit Chinese Med, Sch Chinese Class, Chengdu 610075, Sichuan, Peoples R China
[4] Key Lab Sichuan Prov Ophthalmopathy Prevent & Cure, Chengdu 610075, Sichuan, Peoples R China
[5] Retinal Image Technol & Chron Vasc Dis Prevent & C, Chengdu 610075, Sichuan, Peoples R China
基金
中国国家自然科学基金;
关键词
retinal ischemia-reperfusion; Lycium barbarum glycopeptide; pretreatment; anti-inflammatory; antioxidative; rat; ISCHEMIA/REPERFUSION INJURY; POLYSACCHARIDE; APOPTOSIS; CELLS; AUTOPHAGY; DAMAGE; MODEL; MICE;
D O I
10.18240/ijo.2024.09.04
中图分类号
R77 [眼科学];
学科分类号
100212 ;
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 dose- dependent anti-inflammatory, and antioxidative effects by reducing Caspase-8 expression, preventing declines of SOD activity, and decreasing MDA content in the RIRI rat model.
引用
收藏
页码:1599 / 1605
页数:7
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