Effects of luteolin on two types of hypoxia/reoxygenation injury in H9c2 cardiomyocytes / 中国药学杂志

ABSTRACT

OBJECTIVE: To investigate and compare the effects of luteolin on H9c2 cardiomyocytes damaged by two types of hypoxia/reoxygenation (H/R) injury, and to ensure its protective action against hypoxia/reoxygenation injury. METHODS: The H9c2 cardiomyocytes were cultured, and H/R injury model were induced by N2 saturation hypoxia chamber or sodium dithionite (Na2S2O4). In both models, the viability of cardiomyocytes, LDH leakage, MDA levels, T-SOD activities, ROS levels in cells, and mitochondrial membrane potential (ΔΨm) changes were assessed to evaluate the effects of luteolin on H/R injury in H9c2 cells. RESULTS: Compared with control, luteolin significantly increased cell viability, T-SOD activity in H9c2 cardiomyocytes on H/R injury, and inhibited LDH leakage, MDA and ROS level, and improved ΔΨm(P<0.05 or P<0.01). CONCLUSION: Luteolin has a protective effect against H/R injury in H9c2 cardiomyocytes, and may effectively sustain the balance between anti-oxidant defense and free radicals.