Title : Allopurinol-enhanced myocardial protection does not involve xanthine oxidase inhibition or purine salvage.

Pub. Date : 1992 May-Jun

PMID : 1520248






2 Functional Relationships(s)
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1 In fresh tissue, allopurinol pretreatment inhibited xanthine dehydrogenase activity by 73.1% (from 11.9 +/- 0.5 to 3.2 +/- 0.8 mIU/g wet wt: p less than 0.05) and xanthine oxidase activity by 95.2% (from 8.3 +/- 1.2 to 0.4 +/- 0.2 mIU/g wet wt: p less than 0.05); however, this inhibition was not maintained during perfusion. Allopurinol xanthine dehydrogenase Rattus norvegicus
2 During reperfusion, myocardial xanthine dehydrogenase and oxidase activity was reduced by 40-60% (p less than 0.05) in both allopurinol pretreated and control hearts. Allopurinol xanthine dehydrogenase Rattus norvegicus