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Quince ( Cydonia oblonga Mill.) is one of the medicinal plant with a broad range of pharmacological activities such as hepatoprotective effect. The present study was conducted to evaluate the effect of aqueous extract of Cydonia oblonga Mill. fruit (ACOF) against carbon tetrachloride (CCl 4 )-induced liver damage in rats. Hepatotoxicity was induced by CCl 4 and all tested group animals were treated with the plant extract at a dose of 75, 150, and 300 mg/kg orally for 5 days. Blood was collected for the assessment of serum marker enzymes (alanine transaminase (ALT), aspartate transaminase (AST), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH)). Adenosine triphosphate (ATP) of liver mitochondria was also measured using a validated high performance liquid chromatography (HPLC) method. The antioxidant capacity of the extract resulted in the reduction of MDA and the restoration of GSH in the liver ( P &lt; 0.05). Free radical scavenging activity of the extract was evaluated by DPPH method and the IC 50 value was found to be 568 μg/mL. Our results indicated that bioenergetic depletion occurred in the intoxicated rats as a consequence of mitochondrial dysfunction and ATP production collapse. ACOF markedly restored ATP contents that is a key step in liver regeneration. It can be concluded that the role of ACOF to improve liver function on CCl 4 -hepatoxicity could be attributed, at least partially, to its action at mitochondira by preventing the loss of ATP content.

iranian journal of pharmaceutical research

Protective Effects of Cydonia oblonga Mill. Fruit on Carbon Tetrachloride-induced Hepatotoxicity Mediated through Mitochondria and Restoration of Cellular Energy Content.