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We first established a mouse model of CVA6-induced myocardial injury. Next, we analyzed the immune cell phenotypes CVA6-infected mice hearts by fluorescence-activated cell sorting, and found that CVA6 led to massive neutrophils infiltration, suggesting their potential link with the occurrence of myocardial injury. We further used either \u03b1Gr-1 or \u03b1Ly6G antibody to deplete neutrophils, and found that neutrophil-depleted animals showed decreased cardiac enzymes, lower degree of pathology in hearts, and reduced inflammatory cytokine production compared to isotype controls. Finally, we confirmed the involvement of neutrophils in myocardial injury of clinical patients with severe HFMD. Our study suggests that excessive neutrophils contribute to myocardial injury caused by CVA6 infection, which provides new insights into myocardial injury during the development of HFMD severity and the outcome of immune cell-mediated therapies.<\/jats:p>","DOI":"10.1093\/infdis\/jiad407","type":"journal-article","created":{"date-parts":[[2023,9,22]],"date-time":"2023-09-22T20:08:31Z","timestamp":1695413311000},"page":"1440-1450","source":"Crossref","is-referenced-by-count":9,"title":["Abundant Neutrophil-Initiated Acute Myocardial Injury Following Coxsackievirus A6 Infection"],"prefix":"10.1093","volume":"229","author":[{"given":"Yu","family":"Zhang","sequence":"first","affiliation":[{"name":"Department of Epidemiology, College of Public Health, Zhengzhou University , Zhengzhou, Henan , 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