Both oxypurinol and uric acid react with the myeloperoxidase-derived oxidant hypochlorous acid at physiological pH, and they can protect the elastase-inhibitory capacity of human alpha 1-antiprotease against inactivation by hypochlorous acid. Allopurinol does not protect alpha 1-antiprotease, possibly because the redox potential of allopurinol at physiological pH is too positive to permit oxidation by hypochlorous acid.
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| http://dx.doi.org/10.3109/10715768709088090 | DOI Listing |
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