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The common forms of pediatric cardiomyopathies, classified according to their morphological and functional manifestations, include dilated cardiomyopathy (DCM), restrictive cardiomyopathy (RCM), hypertrophic cardiomyopathy (HCM), and others. Cardiac gene mutations caused abnormal myofibril Ca<jats:sup>2+<\/jats:sup> sensitivity may be involved in the underlying molecular mechanisms of cardiomyopathies. Thus far, no effective treatment for cardiomyopathies has been developed, especially for HCM and RCM in which diastolic dysfunction occurs early and followed by diastolic heart failure. Our laboratory is among the first in the field to investigate the mechanisms underlying various cardiomyopathies and search for the treatment for these disorders. In the past, we and other researchers have found that (\u2212)\u2010epigallocatechin\u20103\u2010gallate (EGCg), the major biomedical polyphenol extracted from green tea, possess multiple therapeutic effects on protecting cardiac function and correcting impaired relaxation. Given its therapeutic effects, EGCg might be a potential drug candidate for administration to patients with cardiomyopathy and heart failure. In this review, we will discuss the molecular mechanisms associated with the pathogenesis of diastolic dysfunction and summarize the pharmacological effects of EGCg on experimental animals and pediatric patients with cardiomyopathies and diastolic dysfunction.<\/jats:p>","DOI":"10.1002\/pdi3.7","type":"journal-article","created":{"date-parts":[[2023,6,10]],"date-time":"2023-06-10T03:13:39Z","timestamp":1686366819000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A green tea extract catechin EGCg: Therapeutic potential for pediatric cardiomyopathies"],"prefix":"10.1002","volume":"1","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1533-3807","authenticated-orcid":false,"given":"Junjun","family":"Quan","sequence":"first","affiliation":[{"name":"Department of Anesthesiology Children\u2019s Hospital of Chongqing Medical University National Clinical Research Center for Child Health and Disorders Ministry of Education Key Laboratory of Child Development and Disorders Chongqing Key Laboratory of Pediatrics  Chongqing China"},{"name":"Department of Cardiology Children's Hospital of Chongqing Medical University  Chongqing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dustin","family":"Gerber","sequence":"additional","affiliation":[{"name":"Department of Biomedical Science Charles E. Schmidt College of Medicine Florida Atlantic University  Boca Raton Florida USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ang","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Biomedical Science Charles E. Schmidt College of Medicine Florida Atlantic University  Boca Raton Florida USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xupei","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Biomedical Science Charles E. 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