Factors associated with delayed complications in patients with a hinge arthroplasty of the knee.
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Adult↗
Biomedical subjects
M L Snaith
Publications and source records attributed to M L Snaith.
Metal sensitivity in patients with a hinge arthroplasty of the knee.
Fifty patients who had received a hinge arthroplasty of the knee were investigated for possible metal sensitivity. Patients were patch tested against all the metal constituents of the prosthesis. Positive patch tests were found in 32% of patients. Seventeen patients had either lossening or a persistent sterile discharge from the knee. No correlation was found between these complications and metal sensitivity. It was concluded that metal sensitivity is probably not a primary factor in the pathogenesis of complications, particularly loosening.
Adult↗
Gout with normal serum urate concentration.
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Aged↗
Antiribonucleoprotein antibodies in connective tissue diseases: estimation by counterimmunoelectrophoresis.
One hundred and seventy-two patients with various connective tissue diseases were investigated for the presence of serum antibodies to extractable nuclear antigen (ENA) and its major components, ribonucleo-protein (RNP) and Sm antigen. The counter-immunoelectrophoresis assay allowed independent detection and measurement of antibodies to the different components. All 13 patients with mixed connective tissue disease (MCTD) had anti-RNP antibody in high titres, 16% of patients with systemic lupus erythematosus (SLE) had low titres, and none of the patients with scleroderma had anti-RNP antibody. MCTD seems to be more benign than either SLE or scleroderma. The counterimmunoelectrophoresis assay is a simple and sensitive technique for confirming the diagnosis.
Antibodies↗
Salmonella typhimurium arthritis in rheumatoid disease.
Septic arthritis is a well recognized complication of rheumatoid arthritis (British Medical Journal, 1976; Mitchell et al., 1976), particularly after joint replacement (Freeman, 1976). We report here infection with an unusual organism--Salmonella typhimurium.
Aged↗
Clinical and biochemical observations on three cases of hypoxanthine-guanine phosphoribosyltransferase deficiency.
Clinical and enzymatic studies on two brothers with severe deficiencies of erythrocyte hypoxanthineguanine phosphoribosyltransferase (HGPRTase) are described, and are compared with similar studies of a classical case of the Lesch-Nyhan syndrome from another family. The two brothers have no neurological abnormalities, only traces of erythrocyte HGPRTase, erythrocyte adenine phosphoribosyltransferase activities approaching the high levels found in the Lesch-Nyhan patient, and similarly raised plasma and urinary concentrations of uric acid. Despite these strong biochemical similarities between the three patients, there were wide differences in the clinical case histories. In both families the enzyme deficiency appeared to be inherited as an X-linked character through asymptomatic carrier females. The relationship of HGPRTase deficiencies to the Lesch-Nyhan syndrome is discussed. Some observations relating to techniques are reported. Cellulose acetate has been found to give much better separations of labelled reaction products in low-level phosphoribosyltransferase assays than filter paper, when used as a supporting medium for electrophoresis. The analysis of hair follicles gives indications of individuals heterozygous for the enzyme deficiency, but the proportion of enzyme-deficient follicles was very small, and the test needs support from studies of other cell types. Using haemolysates, there were signs of a slow indirect conversion of hypoxanthine to inosinic acid, via inosine. Inosine appears to be labelled by a ribosyl-transfer reaction.
Adenine Phosphoribosyltransferase↗