{"title":"Metformin Mitigates Radiation-Induced Endothelial Cell Damage by Attenuating Oxidative Stress, DNA Damage, and Apoptosis","authors":"Eunhui Seo, Hyunkwan Seo, Kyu Chan Lee","doi":"10.51789/cmsj.2026.6.e6","DOIUrl":"https://doi.org/10.51789/cmsj.2026.6.e6","url":null,"abstract":"Background and Objectives: Radiation-induced endothelial injury is a major contributor to cardiovascular complications among cancer survivors.Metformin, an antidiabetic drug with well-established pleiotropic effects, has been reported to exert protective actions beyond glucose regulation.This study aimed to investigate whether metformin mitigates radiationinduced cytotoxicity in human endothelial cells.Methods: EA.hy926 endothelial cells were pretreated with metformin (0.1, 0.2, 0.5, or 1 mM) for 24 hours prior to exposure to 5 Gy of ionizing radiation.Cell viability was assessed using the Cell Counting Kit assay, and Western blot analysis was performed to evaluate phosphorylated and total levels of DNA-dependent protein kinase catalytic subunit (DNA-PKcs), ataxia-telangiectasia mutated (ATM), and H2AX-key proteins involved in DNA double-strand break repair.Results: Radiation significantly decreased cell viability and increased phosphorylation of DNA-PKcs, ATM, and H2AX.Metformin pretreatment significantly improved viability at 0.5 and 1 mM in a dose-dependent manner, while lower concentrations (0.1 and 0.2 mM) showed a non-significant upward trend.Metformin also markedly reduced phosphorylation of DNA damage response proteins at 0.5 and 1 mM, whereas total protein levels of DNA-PKcs, ATM, and H2AX remained unchanged, indicating selective inhibition of protein activation.Conclusions: Metformin exerts a radioprotective effect in human endothelial cells by enhancing cell viability and attenuating radiation-induced DNA damage signaling.These findings suggest the potential clinical utility of metformin in preventing radiation-induced vascular injury.","PeriodicalId":87477,"journal":{"name":"Journal of the cardiometabolic syndrome","volume":"6 1","pages":"84-84"},"PeriodicalIF":0.0,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://e-cmsj.org/Synapse/Data/PDFData/9982CMSJ/cmsj-6-e6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"What Is the Role of Aspirin in Primary Prevention in Patients With Elevated Lp(a)?","authors":"S. Tsimikas","doi":"10.51789/cmsj.2023.3.e7","DOIUrl":"https://doi.org/10.51789/cmsj.2023.3.e7","url":null,"abstract":"","PeriodicalId":87477,"journal":{"name":"Journal of the cardiometabolic syndrome","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88766798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Exercise Training and Cardiovascular Health: Mechanisms, Benefits, and Therapeutic Implications in Cardiovascular Disease","authors":"D. Seo, J. Bae, Xinxing Li, Jin Han","doi":"10.51789/cmsj.2023.3.e20","DOIUrl":"https://doi.org/10.51789/cmsj.2023.3.e20","url":null,"abstract":"","PeriodicalId":87477,"journal":{"name":"Journal of the cardiometabolic syndrome","volume":"268 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83005566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Attempt to Predict Cardiometabolic Risk Factors Using Cardiorespiratory Fitness and Muscular Strength","authors":"B. Kim","doi":"10.51789/cmsj.2023.3.e19","DOIUrl":"https://doi.org/10.51789/cmsj.2023.3.e19","url":null,"abstract":"","PeriodicalId":87477,"journal":{"name":"Journal of the cardiometabolic syndrome","volume":"234 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74963237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Song, Jung-Hwan Kim, Y. Youn, H. Kim, K. Yoo, Hyun-Chel Joo
{"title":"Impact of Obesity on Long Term Mortality and Major Cardiovascular Events After Off-Pump Coronary Artery Bypass Surgery: A Single Center Retrospective Study","authors":"J. Song, Jung-Hwan Kim, Y. Youn, H. Kim, K. Yoo, Hyun-Chel Joo","doi":"10.51789/cmsj.2023.3.e12","DOIUrl":"https://doi.org/10.51789/cmsj.2023.3.e12","url":null,"abstract":"","PeriodicalId":87477,"journal":{"name":"Journal of the cardiometabolic syndrome","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84674808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Post-Pregnancy Hypertension in Women With a History of Hypertensive Disorders of Pregnancy","authors":"B. Kim, J. Shin","doi":"10.51789/cmsj.2023.3.e4","DOIUrl":"https://doi.org/10.51789/cmsj.2023.3.e4","url":null,"abstract":"","PeriodicalId":87477,"journal":{"name":"Journal of the cardiometabolic syndrome","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84793187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Adropin: A New Biomarker in Coronary Artery Disease","authors":"D. Cho","doi":"10.51789/cmsj.2023.3.e8","DOIUrl":"https://doi.org/10.51789/cmsj.2023.3.e8","url":null,"abstract":"","PeriodicalId":87477,"journal":{"name":"Journal of the cardiometabolic syndrome","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86099679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Optimal Duration and De-escalation Strategy of Antiplatelet Agents and Anticoagulation Agents in Korean Patients Undergoing Percutaneous Coronary Intervention","authors":"J. Lee, Sang Ho","doi":"10.51789/cmsj.2023.3.e5","DOIUrl":"https://doi.org/10.51789/cmsj.2023.3.e5","url":null,"abstract":"","PeriodicalId":87477,"journal":{"name":"Journal of the cardiometabolic syndrome","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85305292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Declaration of Conflict of Interest for Editors and Editorial Board Member’s Articles","authors":"","doi":"10.51789/cmsj.2023.3.e13","DOIUrl":"https://doi.org/10.51789/cmsj.2023.3.e13","url":null,"abstract":"","PeriodicalId":87477,"journal":{"name":"Journal of the cardiometabolic syndrome","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82420355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}