Cardiology journal最新文献

An emerging field in cardiovascular research is the translational investigation of transfer RNA-derived small RNAs (tsRNAs). TsRNAs, a class of small non-coding RNA molecules, have been shown to modulate cellular functions by regulating gene expression post-transcriptionally. They are implicated in diverse pathological conditions, including cancer, cardiovascular disease (CVD), infectious disease, diabetes, neurological disease, and metabolic disorder. Accumulating evidence suggests tsRNAs as important players and biomarkers in CVD. Dysregulated tsRNAs are identified in atherosclerosis, heart failure, hypertension and other types of CVD. Bioinformatics and in vitro experimental analyses reveal that tsRNAs may participate in the regulation of endothelial and inflammatory cell interactions, endothelial cell and vascular smooth muscle cell proliferation and migration, and cardiac metabolism, mitophagy and remodeling, contributing to the pathogenesis of CVD. In addition, altered tsRNAs possess great diagnostic and prognostic potential in CVD. Nevertheless, there are currently no in vivo mechanistic studies using animal models, and the small sizes of reported clinical studies that examined tsRNAs limit their diagnostic and prognostic value. Although of promise, further research is needed to address the utility of tsRNAs in cardiovascular care.

Background: The importance of bystander cardiopulmonary resuscitation (CPR) during out-of-hospital cardiac arrests is especially important in the context of coronavirus disease 2029 (COVID-19) because it can significantly influence survival outcomes. The objective of this meta-analysis was to examine the primary outcomes of bystander CPR during the pandemic and pre-pandemic periods.

Methods: A search was conducted in the PubMed Central, Scopus, and EMBASE databases, as well as the Cochrane Central Register of Controlled Trials database, up to December 10, 2023. In cases where the value of I² was greater than or equal to 50% or the Q-test indicated that the p-value was less than or equal to 0.05, the studies were considered to be heterogeneous. Sensitivity assessment was performed using the leave-one-out methodology. The study protocol was registered in PROSPERO with the ID number CRD42023494912.

Results: Twenty-five articles were included in this meta-analysis. Pooled analysis showed that bystander CPR frequency during the COVID-19 pandemic was 38.8%, compared to 44.8% for the pre-pandemic period (odds ratio: 1.04; 95% confidence interval: 0.93-1.16; p = 0.48).

Conclusions: The article's conclusions indicate that the COVID-19 pandemic influenced a reduction in bystander CPR compared to the pre-pandemic period, but this difference was not statistically significant. Further research is recommended to understand attitudes, including the fears of witnesses, before performing CPR on patients with suspected or confirmed infectious diseases. The study highlights the importance of bystander intervention in emergency situations and the impact of a pandemic on public health response behaviors.

Thromboembolic diseases have long been a leading cause of morbidity and mortality, necessitating advances in anticoagulant drugs. Heparins, vitamin K inhibitors, and direct oral anticoagulants (DOACs) are well-established drug classes that help prevent thromboembolic complications. While effective, they pose significant risks during long-term therapy, including bleeding, osteoporosis, heparin-induced thrombocytopenia, and the need for frequent monitoring and dose adjustments. Factor XI (FXI) inhibitors represent an innovative approach in anticoagulation therapy, aiming to balance thromboembolic events with the risk of bleeding complications. They include: a) orally administered small molecule inhibitors such as milvexian and asundexian; b) monoclonal antibodies such as abelacimab, osocimab, and xisomab, which specifically bind and inactivate FXI; c) FXI-antisense oligonucleotide (FXI-ASO), which downregulate FXI synthesis at the mRNA level and reduce plasma FXI concentrations. Available data indicate that FXI inhibitors decrease the risk of thromboembolic events and are associated with a lower incidence of major bleeding than current gold standard methods. Hence, FXI inhibitors may become the preferred anticoagulant class, especially for patients with elevated bleeding risk. Their development is an important step in the history of anticoagulant therapy, striving to find a balance between preventing thromboembolism and reducing bleeding risk, ultimately improving patient outcomes. In this context, a discussion on the characteristics of FXI inhibitors, a summary on data regarding the efficacy and safety of FXI inhibitors based on preclinical and clinical studies, and an outline of future perspectives regarding therapeutic strategies of FXI inhibition in venous thrombosis are presented in this study.

Background: Sten graft implantation faces challenges such as deliverability issues, fracture risk, and subsequent restenosis. Recent advancements have introduced thinner coatings for increased flexibility and improved biocompatibility. The aim herein was to assess the safety and performance of a highly flexible cobalt-chromium stent covered with polytetrafluoroethylene (PTFE) in a preclinical model.

Methods: In total 6 PTEF-covered stent grafts 6mm x 38mm cobalt-chromium, (Solaris BXTM, Scitech Produtos Medicos) were implanted compared to 5 controls ( BeGraftTM, Bentley InnoMed GmbH) in the iliac arteries of 11 swine. Stents were evaluated with angiography, high-definition IVUS, and histology for 28 days.

Results: All animals underwent successful implantation with 100% survival at follow-up. At 28 days, there was no statistically significant difference in MLD compared to baseline in both groups (test, 5.2 ± 0.7 mm vs 5.3 ± 0.6 mm, p = 0.8; control, 4.9 ± 0.7 mm vs 5.1 ± 0.5 mm, p = 0.8), indicating no LLL (test, -0.2 ± 0.16 vs control, -0.18 ± 0.16 mm; p = 0.8). IVUS revealed a tendency for the less neointimal area in the test group (3.75 ± 0.9mm² vs 5.69 ± 2.2 mm²; p = 0.08), resulting in a tendency toward higher % AS in the control arm (14.07 ± 3.42% vs 20 ± 7%; p = 0.1). Microscopic evaluation revealed minimal vascular injury (test 0.1 ± 0.3 vs control 0.1 ± 0.1) and complete endothelialization coverage (test, 3.2 ± 0.8 vs control 3.8 ± 0.3) in both groups, with minimal inflammation(test vs. control: per strut 0.02 ± 0.06 vs. 0.14 ± 0.22; neointimal 1.2 ± 0.6 vs 1.1 ± 0.4; medial 0.3 ± 0.4 vs 0.3 ± 0.4).

Conclusion: Solaris BXTM demonstrated highly flexible and biocompatible, with minimal vascular injury, and reduced neointimal hyperplasia compared to the control.