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Tilapia Skin Peptides Inhibit Apoptosis, Inflammation, and Oxidative Stress to Improve Dry Eye Disease In Vitro and In Vivo

文献类型： 外文期刊

作者： Zeng, Jian 1 ; Hu, Chuanyin 2 ; Lin, Cuixian 1 ; Zhang, Shilin 1 ; Deng, Kaishu 1 ; Du, Jianyang 3 ; Yang, Zhiyou 1 ; Liu, Shucheng 1 ; Wu, Wenjin 4 ; Zhao, Yun-Tao 1 ;

作者机构： 1.Guangdong Ocean Univ, Coll Food Sci & Technol, Guangdong Prov Engn Lab Marine Biol Prod, Modern Biochem Expt Ctr,Guangdong Prov Key Lab Aqu, Zhanjiang 524088, Peoples R China

2.Guangdong Med Univ, Dept Biol, Zhanjiang 524023, Peoples R China

3.Univ Tennessee, Dept Anat & Neurobiol, Hlth Sci Ctr, Memphis, TN 38163 USA

4.Hubei Acad Agr Sci, Inst Agr Prod Proc & Nucl Agr Technol, Wuhan 430064, Peoples R China

期刊名称：JOURNAL OF FOOD BIOCHEMISTRY （ 影响因子：4.0； 五年影响因子：3.7 ）

ISSN： 0145-8884

年卷期： 2023 年 2023 卷

页码：

收录情况： SCI

摘要： Dry eye disease (DED) is a common chronic ophthalmic disorder, and there is no effective treatment to cure it. It is urgent to find new antidry eye compounds. Here, the effects and underlying mechanisms of tilapia skin peptides (TSP) on DED were investigated. In vitro, human corneal epithelial cells (HCECs) were cultured in a hypertonic medium containing TSP for 12 h. The MTT assay, calcein-AM/PI staining, reactive oxygen (ROS) analysis, and western blot were performed at the end of the experiments. In the in vivo model of DED, mice eyes were dropped with 0.3% benzalkonium chloride (BAC) and 0.1% TSP for 14 days. Mice were treated with BAC and TSP twice daily with a 10-hour time interval between treatments. After treatment, phenolic red cotton experiment, tear ferning test, and histology assay were carried out. In vitro, TSP significantly restored the cell viability of HCECs challenged by NaCl. In vivo, tear secretion function and tear fern-like crystal levels were considerably improved in the DED group after treatment with TSP. Mechanically, TSP impend the DED development by regulating Bax/Bcl-2 signal pathway, inhibiting iNOS and COX-2 protein expression, moderating ROS/Nrf2/HO-1 axis, inhibiting cell apoptosis in the corneal regions, increasing the number of conjunctival goblet cells, and arresting corneal epithelial thinning. In conclusion, TSP ameliorated DED-like disorder in BAC-induced DED mice and cell damage in NaCl-induced HCECs. TSP improved DED by suppressing apoptosis, inflammation, and oxidative stress. Consequently, this study reveals the beneficial activity of TSP in DED.

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