Don't go breakin' my heart: cardioprotective alterations to the mechanical and structural properties of reperfused myocardium during post-infarction inflammation

Design and synthesis of matrine derivatives for anti myocardial ischemia-reperfusion injury by promoting angiogenesis

Myocardial ischemia/reperfusion (MI/R) is a common cardiovascular disease that seriously affects the quality of life and prognosis of patients. In recent years, matrine has attracted widespread attention in the treatment of cardiovascular diseases. This study designed, synthesized, and characterized 20 new matrine derivatives and studied their protective effects on ischemia-reperfusion injury through in vivo and in vitro experiments. Based on cellular assays, most newly synthesized derivatives have a certain protective effect on Hypoxia/Reoxygenation (H/R) induced H9C2 cell damage, with compound 22 having the best activity and effectively reducing cell apoptosis and necrosis. In vitro experimental data shows that compound 22 can significantly reduce the infarct size of rat myocardium and improve cardiac function after MI/R injury. In summary, compound 22 is a new potential cardioprotective agent that can promote angiogenesis and enhance antioxidant activity by activating ADCY5, CREB3l4, and VEGFA, thereby protecting myocardial cell apoptosis and necrosis induced by MI/R.

Landscape therapy: rehabilitation potential in patients with post-infarction cardiosclerosis

OBJECTIVE

Aim: To evaluate the rehabilitation potential, effectiveness and safety of landscape therapy in the complex rehabilitation treatment of patients with post-infarction cardiosclerosis (PC) complicated by chronic post-infarction cardiac aneurysm (CPCA) at the sanatorium stage.

PATIENTS AND METHODS

Materials and Methods: We examined 62 patients with PC complicated by CPCA aged 38 to 65 years. Patients were randomized into two groups: the 1st group was undergoing the "Progressive gait" physical activity protocol in the city, and the 2nd group - in the rehabilitation department in a sanatorium. Survey, six-minute walk test, electrocardiography, echocardiography, coronary angiography were performed.

RESULTS

Results: The average distance that 2nd group patients walked in 6 minutes increased from 301.00 ±17.00 to 467.00 ±32.00 m (p<0.05). Only in patients of 2nd group during 3 weeks of complex rehabilitation there was a decrease in body mass index from 23.70 ±1.60 to 18.90 ±1.50 and the diameter of the calf muscle significantly increased from 33.90 ±2.30 cm to 38.10 ±3.10 cm (p < 0.05). Ejection fraction in the 2nd group was 51.00 ±4.50% compared to the 1st group - 44.70 ±3.60% (p < 0.05), which was accompanied by a decrease in the functional class of heart failure in patients of the 2nd group.

CONCLUSION

Conclusions: The rehabilitation potential of landscape therapy in the complex rehabilitation treatment of patients with complicated PC at the sanatorium stage is determined by a significant improvement in myocardial contractility and physical endurance of patients, and improving the quality of life.

Biophysical Reviews: a call for nominations to the 2024 Michéle Auger Award

This editorial for volume 15 issue 3 first provides a brief introduction to the issue contents before then going on to open the call for nominations to the 2024 Michéle Auger Award for Young Scientists' Independent Research-the journal's single award.