51. Cardioprotection of salvianolic acid B and ginsenoside Rg1 combination on subacute myocardial infarction and the underlying mechanism
- Author
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Na Li, Baohong Jiang, Zhou Zhang, Yurong Hu, Shiying Wang, Kenka Cho, Zhihui Dong, Lili Qi, Yuanmin Li, and Linlin Wang
- Subjects
Cardiac function curve ,Male ,medicine.medical_specialty ,Cardiotonic Agents ,Ginsenosides ,medicine.medical_treatment ,Myocardial Infarction ,Pharmaceutical Science ,Hemodynamics ,Haematoxylin ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Internal medicine ,Drug Discovery ,medicine ,Animals ,Myocardial infarction ,Rats, Wistar ,Ligature ,Sirius Red ,030304 developmental biology ,Benzofurans ,Pharmacology ,Cardioprotection ,0303 health sciences ,Ventricular Remodeling ,business.industry ,Myocardium ,medicine.disease ,medicine.anatomical_structure ,Complementary and alternative medicine ,chemistry ,Matrix Metalloproteinase 9 ,030220 oncology & carcinogenesis ,Cardiology ,Molecular Medicine ,Drug Therapy, Combination ,Collagen ,business ,Artery - Abstract
Background Following myocardial infarction (MI), a series of structural and functional changes evolves in the myocardium, collectively defined as cardiac remodeling. Purpose The aim of present study was to investigate the cardioprotection of salvianolicacid B (SalB) and ginsenoside Rg1 (Rg1) combination against cardiac remodeling in a rat model at the subacute phase of MI and further elucidate the underlying mechanism. Methods Rat heart was exposed via a left thoracotomy at the fourth intercostal space and MI was induced by a ligature below the left descending coronary artery. Hemodynamic assay was conducted using a Mikro-tipped SPR-320 catheter which was inserted through the right carotid artery into left ventricle.Myocardial infarct size was detected using 3,5-triphenyltetrazolium chloride (TTC) staining. Haematoxylin and eosin (HE) stain and picric sirius red stain were conducted for histopathological detection. Immunohistochemistry was used to detect the expression of α-smooth muscle actin (α-SMA) and gelatin zymography was used to evaluate the activities of matrix metalloproteinase-9 (MMP-9). Results Comparing with MI rats, 30 mg/kg SalB-Rg1 improved cardiac function verified by maximum rate of pressure development for contraction (+dp/dtmax, p Conclusion All above study indicated the potential therapeutic effects of SalB-Rg1 on heart.
- Published
- 2018