{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T23:08:47Z","timestamp":1790636927803,"version":"4.1.0"},"reference-count":50,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"22","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["JAHA"],"published-print":{"date-parts":[[2021,11,16]]},"abstract":"<jats:sec xml:lang=\"en\">\n            <jats:title>Background<\/jats:title>\n            <jats:p xml:lang=\"en\">Acute myocardial infarction (AMI) is one of the leading causes of cardiovascular morbidity and mortality worldwide. Pyroptosis is a form of inflammatory cell death that plays a major role in the development and progression of cardiac injury in AMI. However, the underlying mechanisms for the activation of pyroptosis during AMI are not fully elucidated.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec xml:lang=\"en\">\n            <jats:title>Methods and Results<\/jats:title>\n            <jats:p xml:lang=\"en\">Here we show that RBP4 (retinol\u2010binding protein 4), a previous identified proinflammatory adipokine, was increased both in the myocardium of left anterior descending artery ligation\u2010induced AMI mouse model and in ischemia\u2010hypoxia\u2012induced cardiomyocyte injury model. The upregulated RBP4 may contribute to the activation of cardiomyocyte pyroptosis in AMI because overexpression of RBP4 activated NLRP3 (nucleotide\u2010binding oligomerization domain\u2010like receptor family pyrin domain\u2010containing 3) inflammasome, promoted the precursor cleavage of Caspase\u20101, and subsequently induced GSDMD (gasdermin\u2010D)\u2010dependent pyroptosis. In contrast, knockdown of RBP4 alleviated ischemia\u2010hypoxia\u2012induced activation of NLRP3 inflammasome signaling and pyroptosis in cardiomyocytes. Mechanistically, coimmunoprecipitation assay showed that RBP4 interacted directly with NLRP3 in cardiomyocyte, while genetic knockdown or pharmacological inhibition of NLRP3 attenuated RBP4\u2010induced pyroptosis in cardiomyocytes. Finally, knockdown of RBP4 in heart decreased infarct size and protected against AMI\u2010induced pyroptosis and cardiac dysfunction in mice.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec xml:lang=\"en\">\n            <jats:title>Conclusions<\/jats:title>\n            <jats:p xml:lang=\"en\">Taken together, these findings reveal RBP4 as a novel modulator promoting cardiomyocyte pyroptosis via interaction with NLRP3 in AMI. Therefore, targeting cardiac RBP4 might represent a viable strategy for the prevention of cardiac injury in patients with AMI.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1161\/jaha.121.022011","type":"journal-article","created":{"date-parts":[[2021,11,2]],"date-time":"2021-11-02T09:03:00Z","timestamp":1635843780000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":46,"title":["Retinol\u2010Binding Protein 4 Promotes Cardiac Injury After Myocardial Infarction Via Inducing Cardiomyocyte Pyroptosis Through an Interaction With NLRP3"],"prefix":"10.1161","volume":"10","author":[{"given":"Kang\u2010Zhen","family":"Zhang","sequence":"first","affiliation":[{"name":"Department of Geriatrics Sir Run Run HospitalNanjing Medical University Nanjing China"},{"name":"Key Laboratory for Aging and Disease Nanjing Medical University Nanjing China"},{"name":"Department of Geriatrics The Second Affiliated Hospital of Nanjing Medical University 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