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Mitochondrial apoptosis in response to cardiac ischemia-reperfusion injury.
J Transl Med
January 2025
Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China.
In patients with acute myocardial infarction (AMI), thrombolytic therapy and revascularization strategies allow complete recanalization of occluded epicardial coronary arteries. However, approximately 35% of patients still experience myocardial ischemia/reperfusion (I/R) injury, which contributing to increased AMI mortality. Therefore, an accurate understanding of myocardial I/R injury is important for preventing and treating AMI.
View Article and Find Full Text PDFLeptin drives glucose metabolism to promote cardiac protection via OPA1-mediated HDAC5 translocation and Glut4 transcription.
Funct Integr Genomics
January 2025
Department of Cardiology, Guizhou Provincial People`s Hospital, 83 Zhongshan East Road, Guiyang City, 550002, Guizhou Province, China.
Metabolic reprogramming, the shifting from fatty acid oxidation to glucose utilization, improves cardiac function as heart failure (HF) progresses. Leptin plays an essential role in regulating glucose metabolism. However, the crosstalk between leptin and metabolic reprogramming is poorly understood.
View Article and Find Full Text PDFIntrapericardial injection of hydrogels with ASC and their secretome to treat dilated cardiomyopathies.
Sci Rep
January 2025
Instituto do Coração (InCor), Faculdade de Medicina, Hospital das Clínicas HCFMUSP, Universidade de São Paulo, São Paulo, Brazil.
Doxorubicin-induced cardiomyopathy (DOX-IC) is a significant and common complication in patients undergoing chemotherapy, leading to cardiac remodeling and reduced heart function. We hypothesized that the intrapericardial injection of hydrogels derived from the cardiac decellularized extracellular matrix (dECM) loaded with adipose tissue-derived stromal cells (ASC) and their secretome dampens or reverses the progression of DOX-IC. DOX-IC was induced in Wistar male rats through ten weekly intra-peritoneal injections of doxorubicin (cumulative dose: 18 mg/kg).
View Article and Find Full Text PDFAssembly of Genetically Engineered Ionizable Protein Nanocage-based Nanozymes for Intracellular Superoxide Scavenging.
Nat Commun
January 2025
Key Laboratory of Bioactive Materials for the Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, and Frontier of Science Center for Cell Response, Nankai University, Tianjin, 300071, China.
Nanozymes play a pivotal role in mitigating excessive oxidative stress, however, determining their specific enzyme-mimicking activities for intracellular free radical scavenging is challenging due to endo-lysosomal entrapment. In this study, we employ a genetic engineering strategy to generate ionizable ferritin nanocages (iFTn), enabling their escape from endo-lysosomes and entry into the cytoplasm. Specifically, ionizable repeated Histidine-Histidine-Glutamic acid (9HE) sequences are genetically incorporated into the outer surface of human heavy chain FTn, followed by the assembly of various chain-like nanostructures via a two-armed polyethylene glycol (PEG).
View Article and Find Full Text PDFPlatelet-white cell ratio is more strongly associated with mortality than other common risk ratios derived from complete blood counts.
Nat Commun
January 2025
Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Complete blood count indices and their ratios are associated with adverse clinical outcomes for many acute illnesses, but the mechanisms generating these associations are not fully understood. Recent identification of a consistent pattern of white blood cell and platelet count co-regulation during acute inflammatory recovery provides a potentially unifying explanation. Here we show that the platelet-to-white-cell ratio, which was selected based on this conserved recovery pattern, is more strongly associated with mortality than other blood count markers and ratios in four important illnesses involving acute inflammation: COVID-19, acute heart failure, myocardial infarction, and stroke.
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