Plantamajoside attenuates isoproterenol-induced cardiac hypertrophy associated with the HDAC2 and AKT/ GSK-3β signaling pathway

Publication date: Available online 19 April 2019Source: Chemico-Biological InteractionsAuthor(s): Linlin Shang, Lv Pin, Shanshan Zhu, Xiaohang Zhong, Yubiao Zhang, Mao Shun, Yunen Liu, Mingxiao HouAbstractAs a compensatory response to cardiac overload, cardiac hypertrophy is closely associated with the occurrence and development of a variety of cardiovascular diseases, in which histone deacetylase 2 (HDAC2) has been reported to play an important role. Plantamajoside (PMS) is an active component extracted from Herba Plantaginis, which is a traditional Chinese medicine, and many biological activities of PMS have been reported. Here, we investigated the effects and mechanism of PMS on isoproterenol (ISO)-induced cardiac hypertrophy. ISO at 10 μmol/L was used in vitro to induce H9c2 cardiomyocyte hypertrophy. Cell viability and cell surface area were determined by MTT assay and immunocytochemistry, respectively. Furthermore, an in vivo, cardiac hypertrophy model was established by subcutaneous injection of ISO. Pathological alterations and fibrosis in the myocardium were studied by H&E and Masson's trichrome staining, respectively. Myocardial injury-related genes and proteins were detected by real-time PCR and western blotting. HDAC2 and its downstream proteins, AKT and GSK3β, were analyzed by western blotting. Our results showed that, in vitro, PMS inhibited the ISO-induced increase in H9c2 cell surface area and the mRNA expression of ANP, BNP and Myh7. In vivo, PMS improved...
Source: Chemico Biological Interactions - Category: Biochemistry Source Type: research