ABSTRACT
OBJECTIVES@#To investigate the protective effects of Shexiang Tongxin Dropping Pill (, STP) on NaSO-induced hypoxia-reoxygenation injury in cardiomyoblast H9c2 cells.@*METHODS@#The cell viability and levels of mRNA and protein expression in H9c2 cells were determined following NaSO-induced hypoxia using Hoechst staining, annexin V/propidium iodide (PI) flow cytometry, real-time polymerase chain reaction and Western blot analysis.@*RESULTS@#STP pretreatment significantly increased the viability and inhibited aberrant morphological changes in H9c2 cardiomyoblast cells induced by NaSO treatment (P<0.05). In addition, STP pretreatment attenuated NaSO-induced hypoxic damage, down-regulated the expression of pro-apoptotic Bax, and up-regulated the expression of anti-apoptotic Bcl-2 in H9c2 cells (P<0.05).@*CONCLUSIONS@#STP was strongly cardioprotective in hypoxia-reoxygenation injury by preventing hypoxic damage and inhibiting cellular apoptosis. These results further support the use of STP as an effective drug for the treatment of ischemic heart disease.