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Ursodeoxycholic Acid and Superoxide Anion

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Specialty Gastroenterology
Date 2005 Aug 13
PMID 16097062
Citations 6
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Abstract

Aim: To investigate the ability of ursodeoxycholic acid (UDCA) to scavenge superoxide anion (O(2)(-)).

Methods: We assessed the ability of UDCA to scavenge (O(2)(-)) generated by xanthine-xanthine oxidase (X-XO) in a cell-free system and its effect on the rate of O(2)(-)-induced ascorbic acid (AA) oxidation in hepatic post-mitochondrial supernatants.

Results: UDCA at a concentration as high as 1 mmol/L did not impair the ability of the X-XO system to generate O(2)(-), but could scavenge O(2)(-) at concentrations of 0.5 and 1 mmol/L, and decrease the rate of AA oxidation at a concentration of 100 micromol/L.

Conclusion: UDCA can scavenge O(2)(-), an action that may be beneficial to patients with primary biliary cirrhosis.

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