{"title":"αB-crystallin mini-peptides support corneal healing <i>in vitro</i> and <i>in vivo</i> in rabbit model.","authors":"Namrata Maity, Aditya Konar, Sarbani Hazra","doi":"10.18240/ijo.2024.10.02","DOIUrl":null,"url":null,"abstract":"<p><strong>Aim: </strong>To evaluate if topical use of αB-crystallin mini-peptides supports corneal healing following flap surgery.</p><p><strong>Methods: </strong>Cultured corneal cells were treated with fluorescent tagged αB-crystallin mini-peptides to assess its internalization. Cultured corneal cells pre-treated with or without the mini-peptides were exposed to H<sub>2</sub>O<sub>2</sub> and cell viability was examined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Elongation of neurites of cultured trigeminal neurones was examined following treatment either with αB-crystallin mini-peptides or protein. Cultured trigeminal neurones were pre-treated either with αB-crystallin mini-peptides or crystallin protein and exposed to H<sub>2</sub>O<sub>2</sub> and presence of beading in the dendrites and axons was assessed. Corneal flap surgery was conducted on rabbit cornea and treated topically either with αB-crystallin peptide (0.5 mg/mL thrice daily for 14d) or phosphate-buffered saline (PBS). Corneal healing was evaluated under slit-lamp biomicroscope, mRNA expression of inflammatory cytokines were assessed and the corneas were evaluated by histopathology.</p><p><strong>Results: </strong>Internalization of αB-crystallin mini-peptides was ascertained by the detection of fluorescence within the corneal cells. The MTT assay revealed that treatment with αB-crystallin mini-peptide reduced cell death induced by H<sub>2</sub>O<sub>2</sub> treatment. The mini-peptides did not influence the elongation of trigeminal neurites, but significantly (<i>P</i><0.05) reduced beading in the neurites. In rabbit eye, the treated corneas showed reduced hyper-reflective zones (<i>P</i><0.05) and suppression in the expression of inflammatory cytokines. Histopathological examination also revealed reduction of inflammatory response in treated corneas.</p><p><strong>Conclusion: </strong>The αB-crystallin mini-peptides restrict the damage to corneal cells and neurons and aids in corneal healing.</p>","PeriodicalId":14312,"journal":{"name":"International journal of ophthalmology","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11422379/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International journal of ophthalmology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.18240/ijo.2024.10.02","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"OPHTHALMOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Aim: To evaluate if topical use of αB-crystallin mini-peptides supports corneal healing following flap surgery.
Methods: Cultured corneal cells were treated with fluorescent tagged αB-crystallin mini-peptides to assess its internalization. Cultured corneal cells pre-treated with or without the mini-peptides were exposed to H2O2 and cell viability was examined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Elongation of neurites of cultured trigeminal neurones was examined following treatment either with αB-crystallin mini-peptides or protein. Cultured trigeminal neurones were pre-treated either with αB-crystallin mini-peptides or crystallin protein and exposed to H2O2 and presence of beading in the dendrites and axons was assessed. Corneal flap surgery was conducted on rabbit cornea and treated topically either with αB-crystallin peptide (0.5 mg/mL thrice daily for 14d) or phosphate-buffered saline (PBS). Corneal healing was evaluated under slit-lamp biomicroscope, mRNA expression of inflammatory cytokines were assessed and the corneas were evaluated by histopathology.
Results: Internalization of αB-crystallin mini-peptides was ascertained by the detection of fluorescence within the corneal cells. The MTT assay revealed that treatment with αB-crystallin mini-peptide reduced cell death induced by H2O2 treatment. The mini-peptides did not influence the elongation of trigeminal neurites, but significantly (P<0.05) reduced beading in the neurites. In rabbit eye, the treated corneas showed reduced hyper-reflective zones (P<0.05) and suppression in the expression of inflammatory cytokines. Histopathological examination also revealed reduction of inflammatory response in treated corneas.
Conclusion: The αB-crystallin mini-peptides restrict the damage to corneal cells and neurons and aids in corneal healing.
期刊介绍：
· International Journal of Ophthalmology-IJO (English edition) is a global ophthalmological scientific publication
and a peer-reviewed open access periodical (ISSN 2222-3959 print, ISSN 2227-4898 online).
This journal is sponsored by Chinese Medical Association Xi’an Branch and obtains guidance and support from
WHO and ICO (International Council of Ophthalmology). It has been indexed in SCIE, PubMed,
PubMed-Central, Chemical Abstracts, Scopus, EMBASE , and DOAJ. IJO JCR IF in 2017 is 1.166.
IJO was established in 2008, with editorial office in Xi’an, China. It is a monthly publication. General Scientific
Advisors include Prof. Hugh Taylor (President of ICO); Prof.Bruce Spivey (Immediate Past President of ICO);
Prof.Mark Tso (Ex-Vice President of ICO) and Prof.Daiming Fan (Academician and Vice President,
Chinese Academy of Engineering.
International Scientific Advisors include Prof. Serge Resnikoff (WHO Senior Speciatist for Prevention of
blindness), Prof. Chi-Chao Chan (National Eye Institute, USA) and Prof. Richard L Abbott (Ex-President of
AAO/PAAO) et al.
Honorary Editors-in-Chief: Prof. Li-Xin Xie(Academician of Chinese Academy of
Engineering/Honorary President of Chinese Ophthalmological Society); Prof. Dennis Lam (President of APAO) and
Prof. Xiao-Xin Li (Ex-President of Chinese Ophthalmological Society).
Chief Editor: Prof. Xiu-Wen Hu (President of IJO Press).
Editors-in-Chief: Prof. Yan-Nian Hui (Ex-Director, Eye Institute of Chinese PLA) and
Prof. George Chiou (Founding chief editor of Journal of Ocular Pharmacology & Therapeutics).
Associate Editors-in-Chief include:
Prof. Ning-Li Wang (President Elect of APAO);
Prof. Ke Yao (President of Chinese Ophthalmological Society) ;
Prof.William Smiddy (Bascom Palmer Eye instituteUSA) ;
Prof.Joel Schuman (President of Association of University Professors of Ophthalmology,USA);
Prof.Yizhi Liu (Vice President of Chinese Ophtlalmology Society);
Prof.Yu-Sheng Wang (Director of Eye Institute of Chinese PLA);
Prof.Ling-Yun Cheng (Director of Ocular Pharmacology, Shiley Eye Center, USA).
IJO accepts contributions in English from all over the world. It includes mainly original articles and review articles,
both basic and clinical papers.
Instruction is Welcome Contribution is Welcome Citation is Welcome
Cooperation organization
International Council of Ophthalmology(ICO), PubMed, PMC, American Academy of Ophthalmology, Asia-Pacific, Thomson Reuters, The Charlesworth Group, Crossref,Scopus,Publons, DOAJ etc.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
