{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T23:17:59Z","timestamp":1791415079543,"version":"4.3.3"},"reference-count":49,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circulation Research"],"published-print":{"date-parts":[[2026,1,16]]},"abstract":"<jats:sec>\n                    <jats:title>BACKGROUND:<\/jats:title>\n                    <jats:p>CPT1 (carnitine palmitoyltransferase 1) is a rate-limiting enzyme for long-chain fatty acid oxidation. In adult hearts, CPT1b predominates, while CPT1a is coexpressed at lower levels. Pathological stress on the heart induces CPT1a expression, coinciding with a reduction in fatty acid oxidation, yet the role of CPT1a in pathological remodeling is unknown.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS:<\/jats:title>\n                    <jats:p>CPT1 isoform expression was assayed in the myocardium of patients with heart failure with nonischemic cardiomyopathy and a preclinical mouse model of heart failure. Mice were subjected to afterload stress via transverse aortic constriction (TAC) or sham surgery (sham) with cardiac-specific CPT1a knockdown or cardiac-specific, adeno-associated virus serotype 9 (AAV9)\u2013mediated CPT1a overexpression (AAV9.cTnT [cardiac troponin T].Cpt1a) versus empty virus or PBS infusions as controls. MicroRNA 370, known to suppress hepatic CPT1a, was assayed and overexpressed to determine if microRNA 370 regulates cardiac CPT1a expression.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS:<\/jats:title>\n                    <jats:p>\n                      CPT1a protein was elevated and microRNA 370 reduced in the myocardium of male and female patients with nonischemic cardiomyopathy, as well as in failing mouse hearts. AAV9\u2013mediated microRNA 370 overexpression in mouse hearts suppressed CPT1a expression and attenuated the response of CPT1a to TAC. Preventing CPT1a upregulation in response to TAC in cardiac-specific CPT1a knockout mice exacerbated adverse remodeling, severe dysfunction, and increased mortality. In contrast, CPT1a overexpression (2.8-fold) attenuated impaired ejection fraction (by 54%) versus control TAC hearts (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt;0.05). Delivery of AAV9.cTnT.Cpt1a 4 weeks after TAC surgery led to significant rescue of ejection fraction and mitigated the exacerbated dysfunction of cardiac-specific CPT1a knockout mice TAC hearts. RNA-seq revealed a novel function of CPT1a in suppressing hypertrophic, profibrotic, and cell death gene programs in both sham and TAC hearts, irrespective of changes in fatty acid oxidation, with reduced histone acetylation.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSIONS:<\/jats:title>\n                    <jats:p>The effects of CPT1a in the heart extend beyond fatty acid oxidation including noncanonical regulation of gene programs. CPT1a upregulation occurs in nonischemic cardiomyopathy and is a critical cardioprotective adaptation to pathological stress.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1161\/circresaha.125.327403","type":"journal-article","created":{"date-parts":[[2025,12,4]],"date-time":"2025-12-04T10:00:16Z","timestamp":1764842416000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":7,"title":["CPT1a Expression Is a Critical Cardioprotective Response to Pathological Stress That Enables Rescue by Gene Transfer"],"prefix":"10.1161","volume":"138","author":[{"given":"Andrew N.","family":"Carley","sequence":"first","affiliation":[{"name":"Department of Internal Medicine (A.N.C., S.K.M., C.K.M., Y.W., A.A.C., E.D.L.), The Ohio State University College of Medicine, Columbus."},{"name":"Davis Heart and Lung Research Institute (A.N.C., S.K.M., C.K.M., Y.W., Z.Z., H.Z., E.D.L.), The Ohio State University, Columbus."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Santosh K.","family":"Maurya","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine (A.N.C., S.K.M., C.K.M., Y.W., A.A.C., E.D.L.), The Ohio State University College of Medicine, Columbus."},{"name":"Davis Heart and Lung Research Institute (A.N.C., S.K.M., C.K.M., Y.W., Z.Z., H.Z., E.D.L.), The Ohio State University, Columbus."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2581-7415","authenticated-orcid":true,"given":"Chandan K.","family":"Maurya","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine (A.N.C., S.K.M., C.K.M., Y.W., A.A.C., E.D.L.), The Ohio State University College of Medicine, Columbus."},{"name":"Davis Heart and Lung Research Institute (A.N.C., S.K.M., C.K.M., Y.W., Z.Z., H.Z., E.D.L.), The Ohio State University, Columbus."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-6671-5688","authenticated-orcid":true,"given":"Yang","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine (A.N.C., S.K.M., C.K.M., Y.W., A.A.C., E.D.L.), The Ohio State University College of Medicine, Columbus."},{"name":"Davis Heart and Lung Research Institute (A.N.C., S.K.M., C.K.M., Y.W., Z.Z., H.Z., E.D.L.), The Ohio State University, Columbus."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amy","family":"Webb","sequence":"additional","affiliation":[{"name":"Department of Biomedical Informatics (A.W.), The Ohio State University, Columbus."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7067-1692","authenticated-orcid":true,"given":"Azariyas A.","family":"Challa","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine (A.N.C., S.K.M., C.K.M., Y.W., 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Effects of intravenous atrial natriuretic peptide on cardiac sympathetic nerve activity in patients with decompensated congestive heart failure. 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