Dihydroisotanshinone I has protective action against menadione-induced hepatotoxicity, attributed to its antioxidant properties including the free radical scavenging activity and inhibition of lipid peroxidation.

The present study demonstrated the hepatoprotective effect of Dihydroisotanshinone I against menadione-induced cytotoxicity in a primary culture of rat hepatocytes. Pretreating the cells with Dihydroisotanshinone I at concentrations ranging from 2.5 microM to 20 microM for 24 hours caused dose-dependent protection against hepatotoxicity induced by menadione. Intracellular glutathione level and activity of DT-diaphorase have been suggested to play important roles in menadione-induced cytotoxicity. However, treating the hepatocytes with 20 microM Dihydroisotanshinone I for 24 hours did not cause a significant change in glutathione level and DT-diaphorase activity. On the contrary, adding Dihydroisotanshinone I to freshly isolated hepatocytes at concentrations between 50 nM to 200 nM inhibited NADH-induced superoxide production dose-dependently as indicated by the decrease of lucigenin-amplified chemiluminescence. In addition, Dihydroisotanshinone I at concentrations ranging from 5 microM to 20 microM inhibited tert-butyl hydroperoxide-induced lipid peroxidation dose-dependently in isolated hepatocytes as indicated by the level of malondialdehyde.

20958-18-3

C18H14O3

278.3

二氢异丹参酮I;二氢丹参酮

DMSO:6 mg/mL (21.56 mM),Need ultrasonic
Powder: -20°C for 3 years
In solvent: -80°C for 2 years