title: Low stimulated IL-4 secretion in PBMC from patients with chronic idiopathic urticaria.
abstract: An imbalance between the Th1 and Th2 arms of the cellular immune system has been reported in several autoimmune diseases but not in chronic idiopathic urticaria (CIU). Peak, total secretion and secretory pattern of the Th1 cytokines (IFNgamma and IL-2) and Th2 cytokines (IL-4 and IL-10) were determined in resting and stimulated peripheral blood mononuclear cells (PBMC) from nineteen CIU patients, six acute urticaria patients and twelve controls. Stimulated IL-4 secretion was significantly reduced in CIU patients as indicated by their five- and three-fold lower peak levels and total IL-4 secretion, respectively. The IL-4 secretory pattern overtime was also markedly different in patients and controls. The late secretion of IFNgamma at 144 h was also reduced in CIU patients. These aberrations were not detectable in AU patients. Secretion of IL-2 was lower in CIU and AU patients as compared to controls while IL-10 secretion was comparable in the three groups. Our data demonstrate for the first time a predominantly reduced IL-4 secretion in CIU patients. This is associated with reduced secretion of both IL-2 and IFNgamma. These findings indicate a generalized down-regulation of both Th1 and Th2 cytokines' secretion in CIU.
authors.affiliation: Allergy and Clinical Immunology Unit, Sapir Medical Center, Kefar Saba, affiliated to Sackler School of Medicine, Tel-Aviv University, Israel.
authors.forename: Ronit
authors.initials: R
authors.lastname: Confino-Cohen
authors.forename: Arnon
authors.initials: A
authors.lastname: Goldberg
authors.forename: Dorit
authors.initials: D
authors.lastname: Aharoni
authors.forename: Lada
authors.initials: L
authors.lastname: Naiman
authors.forename: Andreas
authors.initials: A
authors.lastname: Buchs
authors.forename: Mordechai
authors.initials: M
authors.lastname: Weiss
authors.forename: Joshua
authors.initials: J
authors.lastname: Weissgarten
authors.forename: Micha J
authors.initials: MJ
authors.lastname: Rapoport
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001327:Autoimmune Diseases / Q000276:immunology / Q000378:metabolism / Q000473:pathology; D002478:Cells, Cultured; D002908:Chronic Disease; D016207:Cytokines / Q000276:immunology / Q000378:metabolism; D006801:Humans; D015847:Interleukin-4 / Q000276:immunology / Q000378:metabolism*; D007963:Leukocytes, Mononuclear / Q000276:immunology / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D018417:Th1 Cells / Q000276:immunology; D018418:Th2 Cells / Q000276:immunology; D014581:Urticaria / Q000276:immunology / Q000378:metabolism* / Q000473:pathology
chemical_list: D016207:Cytokines; D015847:Interleukin-4