5-Hydroxy-6,7,3',4'-tetramethoxyflavone (HTF), Limonexic acid (LA) are two compounds isolated from the flowers of Citrus aurantium L. var. amara Engl with various biological activities. METHODS AND RESULTS: This study was designed to investigate their protective effects against carbon tetrachloride (CCl4)-induced hepatocyte injury, using human hepatic cell line HL-7702 to determine the cell cytotoxicity, cell viability, levels of hepatic marker enzymes, malondialdehyde (MDA). Results showed that pretreatment with HTF, Limonexic acid could significantly reverse CCl4-induced HL-7702 cell viability decrease, Limonexic acid displayed a higher activity. HTF, Limonexic acid also showed their capability of decreasing the CCl4-induced leakage of lactate dehydrogenase (LDH), aspartate aminotransferase (AST), inhibiting the lipid peroxidation, HTF showed more significant activity.
CONCLUSIONS:
Given that HTF, Limonexic acid were not toxic, it is concluded that HTF, Limonexic acid could effectively protect hepatocyte against CCl4-induced injury. |