Inhibitory effect of sinomenine on H2O2-induced apoptosis in neonatal rat cardiomyocytes / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the effects of sinomenine on apoptosis in cutured neonatal rat cardiomyocytes induced by H2O2 and its possible mechanism.</p><p><b>METHOD</b>H2O2 was used to build an oxidative stress-induced injury model in neonatal rat cardiomyocytes after being treated with sinomenine (10, 30, 100 micromol L(-1)), the apoptosis rate, the content of malondialdehyde (MDA), the activity of superoxide dimutase (SOD), the activity of lactate dehydrogenase (LDH) and expression of NF-kappaB protein of the Cardiomyocytes were examined.</p><p><b>RESULT</b>Compared with the model group, the apoptosis rate and the content of MDA, LDH decreased greatly (P < 0.01), and the activity of SOD increased distinctly (P < 0.01) after being treated by sinomenine (10, 30, 100 micromol x L(-1)).</p><p><b>CONCLUSION</b>Sinomenine can inhibit the apoptosis induced by H2O2 in neonatal rat cardiomyocytes. The protective mechanism could be related to its ability to reduce lipid pexosidation and to inhibit cardiomyocyte expression of NF-kappaB protein.</p>