OBJECTIVE

2

To study the protective mechanism of Bawei chenxiang powder containing serum on H9c2 cells injured by oxygen-glucose deprivation （OGD）.

METHODS

2

H9c2 cells were divided into blank group， model group and Bawei chenxiang powder low-dose， medium-dose and high-dose groups （the dose of drug containing serum 2.5， 8， 12 g/kg）. H9c2 cells were cultured

in vitro

to establish OGD model. After intervention with drug-containing serum， survival rate of cell was detected. The cell morphology was observed； the levels of lactate dehydrogenase （LDH）， creatine kinase （CK）， superoxide dismutase （SOD）， catalase （CAT）， respiratory chain complexⅠ （ComplexⅠ）， glutathione peroxidase （GSH-Px） and malondialdehyde （MDA） were detected. The contents of reactive oxygen species （ROS）， mitochondrial membrane potential and apoptosis were also detected. The expressions of oxidative stress-related proteins [Kelch ECH association protein 1 （Keap1）， nuclear factor erythroid 2-related factor 2 （Nrf2）， heme oxygenase 1 （HO-1）， NADH oxidoreductase coenzyme 10 （Ndufa10）， thioredoxin （Trx）] and apoptosis-related proteins [B-cell lymphoma 2 （Bcl-2）， Bcl-2 associated X protein （Bax）， Caspase-3 and cytochrome C （Cytc）]

were detected.

RESULTS

2

Compared with blank group， the cell morphology of model group was damaged； the levels of LDH， CK and MDA were significantly increased （

P

＜0.01）， while the levels of CAT， ComplexⅠ， SOD and GSH-Px and mitochondrial membrane potential were significantly decreased （

P

＜0.01）. The content of intracellular ROS and apoptotic rate were significantly increased （

P

＜0.01）； the expressions of oxidative stress-related proteins （Keap1， Nrf2， HO-1， Ndufa10 and Trx） and pro-apoptosis proteins （Bax， Caspase-3 and Cytc） were significantly increased （

P

＜0.05）， while the expression of anti-apoptotic protein Bcl-2 was significantly decreased （

P

＜0.05）. After administration of Bawei chenxiang powder containing serum， the cell morphology improved， and most of the above indexes were significantly reversed （

P

＜0.05 or

P

＜0.01）.

CONCLUSIONS

2

Bawei chenxiang powder containing serum has a good protective effect on H9c2 cells damaged by OGD， the mechanism of which is related to the reduction of oxidative damage and inhibition of cell apoptosis.