Biomedical subjects
S H Neucks
Publications and source records attributed to S H Neucks.
Localized scleroderma and idiopathic thrombocytopenia.
Two patients with localized scleroderma who developed thrombocytopenic purpura are reported. In both patients the thrombocytopenia improved after prednisone therapy, and has not recurred in 5 and 8 yr of subsequent observation without steroids. Both patients had a positive antinuclear antibody (ANA) test and 1 had a positive assay for immune complexes by the Clq solid phase radioimmunoassay. Non-immune causes for the lowered platelets were not found. This possible association may add a new, potentially life-threatening dimension to localized scleroderma.
Chlorambucil in the treatment of iridocyclitis in juvenile rheumatoid arthritis.
A patient with chronic, progressive, iridocyclitis secondary to pauciarticular juvenile rheumatoid arthritis (JRA) is described. The patient's iridocyclitis was unresponsive to topical, systemic, and subtenon injections of corticosteroids, but did respond to low doses of chlorambucil. The use of immunosuppressives may be indicated in severe, unresponsive iridocyclitis secondary to JRA.
Hidden 19S IgM rheumatoid factor in synovial fluid.
Synovial fluid (SF) of 16 adult patients with rheumatoid arthritis (RA) and 9 children with juvenile rheumatoid arthritis (JRA) was investigated for the presence of hidden 19S IgM rheumatoid factor (RF). SF was incubated with 500 IU hyaluronidase/g of SF, dialyzed against acetate buffers at decreasing pH, centrifuged and subjected to chromatography on a Sephadex G-200 column. The resulting IgM-containing fraction of SF from 5 seropositive patients (3 adult RA, 2 JRA patients) demonstrated RF activity by the complement-dependent hemolytic assay. Hidden 19S IgM RF was not found in the IgM-containing fractions of SF from 13 adult seronegative RA patients. Hidden 19S IgM RF was shown in the IgM-containing fraction of SF in 4 of 7 children with seronegative JRA.