title: Evidence for relationships between antiperinuclear and IgG rheumatoid factor.
abstract: Antiperinuclear factor (APF) and IgG-rheumatoid factor (IgG-RF) has been found in 64% and 48% of cases of rheumatoid arthritis, 36% and 50% of cases of psoriasis and 31% and 45% of cases of primary Sjögren's syndrome. A close relationship between APF and IgG-RF is suggested by statistical and experimental data. Purified IgG-RF has some degree of APF activity.
mesh_terms: D000328:Adult; D000368:Aged; D000974:Antibodies, Antinuclear / Q000032:analysis*; D001172:Arthritis, Rheumatoid / Q000276:immunology; D002908:Chronic Disease; D005260:Female; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis*; D008104:Liver Cirrhosis, Alcoholic / Q000276:immunology; D008297:Male; D008875:Middle Aged; D009230:Myxedema / Q000276:immunology; D011565:Psoriasis / Q000276:immunology; D012217:Rheumatoid Factor / Q000032:analysis*; D012829:Silicosis / Q000276:immunology; D012859:Sjogren's Syndrome / Q000276:immunology
chemical_list: D000974:Antibodies, Antinuclear; D007074:Immunoglobulin G; C030902:antiperinuclear factor; D012217:Rheumatoid Factor