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Updated: Jul 2, 2026

Human Liver Microphysiological System for Assessing Drug-Induced Liver Toxicity In Vitro
Published on: January 31, 2022
Effect of picroliv administration on hepatic microsomal mixed function oxidases and glutathione-conjugating enzyme
1Pharmacology & Toxicology section, Research Centre, Hindustan Antibiotics Limited, Pimpri, Pune 411 018, India. dr_jaynil@yahoo.com
Abstract:
The effect of Picroliv on hepatic microsomal mixed-function oxidases (MFO) and glutathione conjugating enzyme system in cholestatic rats was studied. Bile duct ligation in male rats for one weeks caused significant increase in both serum sorbitol dehydrogenase activity and serum bile acide concentration indicating cholestatic liver injury. Furthermore, a rise in the hepatic hydroxyproline level indicating collagen accumulation was observed. As a result of these alterations, the hepatic microsomal MFO system was imparied as evidenced by a decrease in cytochrome P-450 system content and in the activities of NADPH-cytochrome C reductase and aminopyrine demethylase. While the hepatic glutathione content remained unaffected, the cytosolic glutathione S-transferase activity was clearly suppressed due to subchronic cholestasis. Oral administration of Picroliv (25 mg/kg/day for 21 days)--a standardized irioid glycoside fraction of Picrorhiza kurroa in bile ligation induced cholestatic rats, singnificantly prevented the biochemical changes induced in liver and serum of cholestatic rats. These results suggested that picroliv has anti-cholestatic activity which may be attributed to antioxidant property or it's specific role in protein synthesis.
Insights
Picroliv, a herbal compound, effectively combats cholestatic liver injury in rats by preventing biochemical damage. This suggests Picroliv possesses significant anti-cholestatic properties, potentially through antioxidant mechanisms.
Area of Science:
- Hepatology
- Pharmacology
- Biochemistry
Background:
- Cholestatic liver injury, induced by bile duct ligation in rats, significantly elevates serum markers and hepatic hydroxyproline.
- This injury impairs hepatic microsomal mixed-function oxidases (MFO) and suppresses glutathione S-transferase activity.
- Hepatic glutathione levels remain unaffected during cholestasis.
Purpose of the Study:
- To investigate the effect of Picroliv on MFO and glutathione conjugating enzyme systems in cholestatic rats.
- To evaluate the potential anti-cholestatic activity of Picroliv.
Main Methods:
- Bile duct ligation was performed in male rats to induce cholestasis.
- Serum and liver biochemical parameters were analyzed.
- Rats were orally administered Picroliv (25 mg/kg/day for 21 days).
Main Results:
- Picroliv administration significantly prevented the rise in serum sorbitol dehydrogenase and bile acid concentrations.
- Picroliv mitigated the decrease in cytochrome P-450 content and the activities of NADPH-cytochrome C reductase and aminopyrine demethylase.
- The suppression of hepatic glutathione S-transferase activity was significantly prevented by Picroliv.
Conclusions:
- Picroliv demonstrates significant anti-cholestatic activity in a rat model of bile duct ligation.
- The protective effects of Picroliv may be linked to its antioxidant properties or a role in protein synthesis.
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