biostudies-literatureUnknown65Yan J<h4>Introduction</h4>Surgical ventricular reconstruction (SVR) is an alternative therapeutic approach in patients with refractory heart failure (HF), but residual remodeling after SVR limits the improvement of HF. Recently, we reported that SVR may act as an environmental cue to reactivate endogenous proliferation of cardiomyocytes; however, it is unclear whether enhancing endogenous cardiomyocyte regeneration further improves HF after SVR.<h4>Objectives</h4>We aimed to explore whether circular RNAs (circRNAs) would involved in SVR and their mechanisms.<h4>Methods</h4>Male C57BL/6 mice were subjected to myocardial infarction (MI) or sham surgery. Four weeks later, MI mice with a large ventricular aneurysm underwent SVR or a second open-chest operation only. Echocardiography and histologicaJournal of advanced research227-238https://www.ebi.ac.uk/biostudies/studies/S-EPMC11518968biostudies-literatureCircMap4k2 reactivated by aneurysm plication alleviates residual cardiac remodeling after SVR by enhancing cardiomyocyte proliferation in post-MI mice.PMC11518968Shen MLiao YChen QBin JTan NYan JMa SChen KZhu YChen LLiao WHe MZhang RLi MAi CWang QZheng CLin HfalseCircMap4k2 reactivated by aneurysm plication alleviates residual cardiac remodeling after SVR by enhancing cardiomyocyte proliferation in post-MI mice.<h4>Introduction</h4>Surgical ventricular reconstruction (SVR) is an alternative therapeutic approach in patients with refractory heart failure (HF), but residual remodeling after SVR limits the improvement of HF. Recently, we reported that SVR may act as an environmental cue to reactivate endogenous proliferation of cardiomyocytes; however, it is unclear whether enhancing endogenous cardiomyocyte regeneration further improves HF after SVR.<h4>Objectives</h4>We aimed to explore whether circular RNAs (circRNAs) would involved in SVR and their mechanisms.<h4>Methods</h4>Male C57BL/6 mice were subjected to myocardial infarction (MI) or sham surgery. Four weeks later, MI mice with a large ventricular aneurysm underwent SVR or a second open-chest operation only. Echocardiography and histologica2024-01-01T00:00:00Z2024 Nov2025-04-26T17:23:11.404Z2025-04-06T15:29:49.927ZS-EPMC115189683804360810.1016/j.jare.2023.11.034