Research progress on regulation mechanism of tanshinone IIA on cell apoptosis and autophagy in ischemic heart diseases / 中草药

Ischemic heart disease is a leading cause of morbidity and mortality throughout the world which is a serious threat to human health. Tanshinone IIA is a major lipophilic component extracted from the roots of Salvia miltiorrhiza. Studies have shown that tanshinone IIA has a variety of anti-cardiovascular diseases, and its mechanism is related to the regulation of myocardial cell apoptosis and autophagy. This article discusses the signaling pathways and their correlations related to apoptosis and autophagy in ischemic heart disease. The recent advances about the regulation of apoptosis and autophagy in the treatment to ischemia heart disease by tanshinong IIA were summarized. The mechanism of regulating apoptosis and autophagy to produce cardiovascular protection was discussed. This paper will provide a basis for in-depth study of ischemic heart disease and the development and utilization of drugs.

Biological characteristics of bone marrow derived mesenchymal stem cells from patients with coronary artery disease / 中华胸心血管外科杂志

Objective To establish a method for the isolation and culture of bone marrow derived mesenchymal stem cells (MSCs) from patients with coronary artery disease and investigated its biological characteristics. Methods Bone marrow was extracted from patients' sternum when they were operated for coronary artery bypass graft. MSCs were separated from bone marrow by density gradient centrifugation in Percoll solution and seeded in culture medium supplemented with 10% fetal bovine serum. The morphology and growth characteristic of MSCs were observed in primary and passage generation culture with inverted microscope. The cell phenotype and cell cycle of MSCs were analyzed by flow cytometry. The growth curves were compared between different passages and ages. Results Most adherent MSCs showed spindle morphology whatever passages they were. The MSCs could be expanded for 15 passages. The proliferative potential of MSCs over the fifth passage or from old patients decreased gradually. The MSCs in primary and passage were positive for CD29 and CD44, but negative for CD34 and CD45. Analysis for cell cycle showed most MSCs in G_0/G_1 phase. Conclusion The method of isolation and culture of sternum bone marrow derived MSCs from patients with coronary artery disease is feasible, the MSCs have self-renewal capacity and might be ideal for cellular cardiomyoplasty.