title: Polymorphonuclear leukocyte function in psoriasis: chemotaxis, chemokinesis, beta-adrenergic receptors, and proteolytic enzymes of polymorphonuclear leukocytes in the peripheral blood from psoriatic patients.
abstract: Psoriatic patients, particularly those with psoriatic arthritis, have neutrophilic and eosinophilic leukocytosis. Isolated polymorphonuclear leukocytes (PMNLs) from psoriatic patients have normal concentrations of proteolytic enzymes and they have beta-adrenergic receptors of normal density and affinity. PMNLs from psoriatic patients responded normally to the synthetic chemotactic peptide, f-Met-Leu-Phe (formyl-methionine-leucine-phenylalanine). The chemotactic activities of sera from psoriatic patients were similar to those of normal sera. Sera from psoriatic patients enhanced chemokinesis of PMNLs more than normal control sera at a final concentration of 1%; no difference in chemokinetic response between psoriatic and normal sera was found at serum concentrations greater than 2.5%. This study suggests that the peripheral PMNLs from psoriatic patients are normal, but the sera of psoriatic patients has more chemokinetic activity for PMNLs than does normal serum.
mesh_terms: D002634:Chemotaxis, Leukocyte; D006801:Humans; D009239:N-Formylmethionine / Q000031:analogs & derivatives / Q000494:pharmacology; D009240:N-Formylmethionine Leucyl-Phenylalanine; D009504:Neutrophils / Q000201:enzymology / Q000502:physiology*; D009842:Oligopeptides / Q000494:pharmacology; D010447:Peptide Hydrolases / Q000097:blood*; D011565:Psoriasis / Q000503:physiopathology*; D011941:Receptors, Adrenergic / Q000378:metabolism*; D011943:Receptors, Adrenergic, beta / Q000378:metabolism*
chemical_list: D009842:Oligopeptides; D011941:Receptors, Adrenergic; D011943:Receptors, Adrenergic, beta; D009239:N-Formylmethionine; D009240:N-Formylmethionine Leucyl-Phenylalanine; D010447:Peptide Hydrolases