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  • Title: Effect of gossypol on liver metabolic enzymes in male rats.
    Author: Ali SF, El-Sewedy SM.
    Journal: Toxicol Lett; 1984 Dec; 23(3):299-306. PubMed ID: 6084346.
    Abstract:
    The effects of gossypol on liver metabolism were examined in male rats. Gossypol acetic acid was administered to Sprague-Dawley rats intraperitoneally (i.p.) at 5 mg/kg daily, 5 days/week for 2 weeks. The rats were killed 24 h after the last injection. The liver/body weight ratio (-42%), concentration of liver glutathione (-34%), activities of liver alpha-naphthtylacetate esterase (-30%) and DNase (-39%) were significantly decreased when compared to controls. Hepatic beta-glucuronidase (+37%), RNase (+35%) and serum alkaline RNase (+23%) activities were significantly increased. No changes were found in serum transaminases (SGPT, SGOT) or in hepatic RNA and DNA concentration. Elevation of liver and serum RNase activities suggest that gossypol treatment produces some catabolic effects. The depletion of hepatic glutathione and the elevation of beta-glucuronidase activity indicate that gossypol is hepatotoxic when given at this dose for 2 weeks.
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