title: Lymphocyte activation by streptococcal antigens in psoriasis.
abstract: Cell-mediated immune responses in 28 hospitalized patients with psoriasis and in 36 healthy controls were studied using the two-step leukocyte migration agarose test. Specific cell-mediated immunity to A-streptococcal cell wall and cell membrane antigens occurred significantly more often in patients with psoriasis than in the control group. A statistically significant correlation between psoriasis-associated antigens of the HLA-B locus and cellular immune reactivity to A-streptococcal antigens or clinical course was not found. When patients with guttate psoriasis were compared separately with the control group, leukocyte migration inhibition induced by cell-free supernatants of A-streptococcal antigen-exposed mononuclear cell cultures was found to be more frequent than in other forms of psoriasis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000942:Antigens, Bacterial; D002464:Cell Migration Inhibition; D002648:Child; D005260:Female; D006680:HLA Antigens / Q000032:analysis; D006801:Humans; D007111:Immunity, Cellular; D008214:Lymphocytes / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D011565:Psoriasis / Q000276:immunology*; D013297:Streptococcus pyogenes / Q000276:immunology*
chemical_list: D000942:Antigens, Bacterial; D006680:HLA Antigens