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Successful treatment of cardiac dysfunction due to left main trunk obstruction and severe acute aortic regurgitation secondary to acute type A aortic dissection using Impella: a case report.
J Cardiothorac Surg
December 2024
Department of Cardiovascular Surgery, Kanazawa University, Takaramachi 13-1, Kanazawa, 920-8641, Japan.
Background: Acute type A aortic dissection (A-AAD) with severe acute aortic regurgitation (AR) and coronary involvement is a potentially fatal condition that causes left ventricular volume overload and catastrophic acute myocardial infarction. We present the successful management of a patient using Impella 5.5 following cardiopulmonary arrest caused by A-AAD with severe acute AR and left main trunk (LMT) obstruction.
View Article and Find Full Text PDFLipotoxicity-induced upregulation of FIS1 exacerbates mitochondrial fragmentation and promotes NLRP3-dependent pyroptosis in diabetic cardiomyopathy.
Free Radic Biol Med
December 2024
Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China. Electronic address:
Background: Lipotoxicity is a significant factor in the pathogenesis of diabetic cardiomyopathy (DbCM), a condition characterized by mitochondrial fragmentation and pyroptosis. Mitochondrial fission protein 1 (FIS1) plays a role in mitochondrial fission by anchoring dynamin-related protein 1 (DRP1). However, the specific contribution of FIS1 to DbCM remains unclear.
View Article and Find Full Text PDFSex differences in cardiac energetics in the rat ventricular muscle.
Sci Rep
December 2024
Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand.
Cardiac sex-difference functional studies have centred on measurements of twitch force and Ca dynamics. The energy expenditures from these two cellular processes: activation (Ca handling) and contraction (cross-bridge cycling), have not been assessed, and compared, between sexes. Whole-heart studies measuring oxygen consumption do not directly measure the energy expenditure of these activation-contraction processes.
View Article and Find Full Text PDFHMOX1-LDHB interaction promotes ferroptosis by inducing mitochondrial dysfunction in foamy macrophages during advanced atherosclerosis.
Dev Cell
December 2024
Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China; Heilongjiang Provincial Key Laboratory of Panvascular Disease, Harbin 150086, China; The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin 150081, China; State Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin 150080, China. Electronic address:
Advanced atherosclerosis is the pathological basis for acute cardiovascular events, with significant residual risk of recurrent clinical events despite contemporary treatment. The death of foamy macrophages is a main contributor to plaque progression, but the underlying mechanisms remain unclear. Bulk and single-cell RNA sequencing demonstrated that massive iron accumulation in advanced atherosclerosis promoted foamy macrophage ferroptosis, particularly in low expression of triggering receptor expressed on myeloid cells 2 (TREM2) foamy macrophages.
View Article and Find Full Text PDFSUZ12-Increased NRF2 Alleviates Cardiac Ischemia/Reperfusion Injury by Regulating Apoptosis, Inflammation, and Ferroptosis.
Cardiovasc Toxicol
December 2024
Department of Cardiovascular Center, Beijing Tongren Hospital, Capital Medical University, No. 3 Chongwenmennei Street, Dongcheng District, Beijing, 100730, China.
Nuclear factor erythroid 2-related factor 2 (NRF2) is a redox-sensitive transcriptional factor that enables cells to resist oxidant responses, ferroptosis and inflammation. Here, we set out to probe the effects of NRF2 on cardiomyocyte injury under acute myocardial infarction (AMI) condition and its potential mechanism. Human cardiomyocytes were exposed to hypoxia/reoxygenation (H/R) to induce cell injury.
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