© 1991 British Society for Rheumatology
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RENAL TUBULAR DYSFUNCTION IN RHEUMATIC DISEASES
Clinical Pharmacology Unit, Royal Bath Hospital, Harrogate, HG1 2PS, and the Diagnostic Development Unit, University of Leeds Leeds
Correspondence to:
Correspondence to Dr H. Bird
Evidence of renal tubular dysfunction as defined by abnormal urinary levels of
and ß2 microglobulin with or without microalbuminuria was found in 47 (16.5%) of 285 patients with a variety of rheumatic diseases, compared with a preva lence of <1% in 500 healthy adults. Previous work from this unit has shown a prevalence of tubular dysfunction of 24% in patients with severe rheumatic disease admitted to hospital, probably associated with severe rheumatoid arthritis. Although our study confirms a high prevalence of renal tubular dysfunction, we have shown that it is related to age and intercurrent illness, particularly urinary tract infection, rather than to rheumatic disease or drug therapy, although it is possible drug therapy could add to a compound insult on an ageing or damaged kidney.
KEY WORDS: Renal tubular dysfunction,
1microglobulin, ßmicroglobulin, Rheumatoid arthritis, Gold, Penicillamine, Non-steroidal anti-inflammatory drugs
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