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Annals of the Rheumatic Diseases logoLink to Annals of the Rheumatic Diseases
. 1987 Nov;46(11):843–845. doi: 10.1136/ard.46.11.843

Xanthine oxidoreductase is present in human synovium.

R E Allen 1, J M Outhwaite 1, C J Morris 1, D R Blake 1
PMCID: PMC1003403  PMID: 3426290

Abstract

It is postulated that the mobile inflamed joint may be subject to cyclical ischaemic reperfusion injury. Xanthine oxidoreductase is an enzyme thought to contribute to oxidative reperfusion injury, and the detection of this activity in human synovium is described. Three normal and five rheumatoid tissues were assayed with a carbon-14 radioassay detecting the conversion of [14C]xanthine to [14C]uric acid. Rheumatoid synovia contained 0.67-305 microU/g tissue (n = 5), while normal synovia contained 1.2-5.0 microU/g tissue (n = 3).

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Selected References

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