Tyrosine phosphorylation in neutrophils from synovial fluid of patients with rheumatoid arthritis

Lloyds, D., Davies, E. V., Williams, B. D. and Hallett, Maurice Bartlett ORCID: https://orcid.org/0000-0001-8197-834X 1996. Tyrosine phosphorylation in neutrophils from synovial fluid of patients with rheumatoid arthritis. Rheumatology 35 (9) , pp. 846-852. 10.1093/rheumatology/35.9.846

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Abstract

The priming of neutrophils is associated with an increase in the level of tyrosine phosphorylation of cytosolic proteins, specifically of proteins with mol. wts of 42 and 74 kDa. We show here, using dot blots and Western blotting, that neutrophils isolated from rheumatoid synovial fluid have increased tyrosine phosphorylation of these target proteins. The level of tyrosine phosphorylation within neutrophils in the synovial fluid was increased when compared with neutrophils from the blood of the same patients, normal blood or neutrophils from the synovial fluid of patients without rheumatoid arthritis. Neutrophils from the rheumatoid synovial fluid were also more active and were unable to be further primed by exogenous primers. These data suggest that this elevation of tyrosine phosphorylation was the result of the action of local priming agents within the rheumatoid synovial fluid.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine
Subjects:	R Medicine > R Medicine (General)
Publisher:	Oxford University Press
ISSN:	1462-0324
Last Modified:	28 Oct 2022 09:03
URI:	https://orca.cardiff.ac.uk/id/eprint/73137

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