title: Pro-inflammatory cellular immune response in Behçet's disease.
abstract: Several proteins are investigated as candidate auto-antigens in the pathogenesis of Behçet's disease (BD). This study aimed to screen the cellular responses to auto-antigen (alphaB-crystallin, alphaBC), and microorganism (Streptococcus sangius KTH-1 BES-1 protein) derived peptides as well as to isopentenyl pyrophosphate (IPP). Peripheral blood mononuclear cells (PBMC) from 22 BD patients and 22 healthy controls (HC) were stimulated in vitro with alphaBC, BES-1 peptides, IPP and PPD and induced proliferation as well as the secreted interleukin (IL)-12 and interferon (IFN)-gamma production levels were measured. We did not observe any significant difference in cellular proliferation between BD patients and HC. Induction of IL-12 secretion with alphaBC was stronger in BD patients (P = 0.04) and in the disease subgroup with uveitis (P = 0.027) compared the HC. When responses to PPD were compared, proliferation of PMBC was lower (P = 0.03), whereas IL-12 secretion was higher in BD (P = 0.04) as well as in patients under colchicum treatment (P = 0.04) and with vascular involvement (P = 0.006) compared to HC. BES-1(373-385 )peptide induced also higher IL-12 productions by PBMC of BD patients (P = 0.017) and of patients with uveitis (P = 0.013). Finally, IPP stimulated higher IL-12 secretions from PBMC in BD patients (P = 0.035) and in patients with (P = 0.02) or without (P = 0.017) uveitis or arthritis (P = 0.04), under colchicum treatment (P = 0.01) or not receiving any immunosuppressive treatment (P = 0.007) compared to HC. These results suggest a more prominent pro-inflammatory cytokine secretion from PBMC in BD patients compared to HC in response to various antigens including alphaBC protein, BES-1(373-385), IPP and PPD.
authors.affiliation: Department of Physiology, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey.
authors.forename: Ayla
authors.initials: A
authors.lastname: Kulaber
authors.forename: Ilknur
authors.initials: I
authors.lastname: Tugal-Tutkun
authors.forename: Sibel P
authors.initials: SP
authors.lastname: Yentür
authors.forename: Gülşen
authors.initials: G
authors.lastname: Akman-Demir
authors.forename: Fumio
authors.initials: F
authors.lastname: Kaneko
authors.forename: Ahmet
authors.initials: A
authors.lastname: Gül
authors.forename: Güher
authors.initials: G
authors.lastname: Saruhan-Direskeneli
mesh_terms: D000328:Adult; D000942:Antigens, Bacterial / Q000494:pharmacology; D001379:Azathioprine / Q000627:therapeutic use; D001528:Behcet Syndrome / Q000097:blood / Q000188:drug therapy / Q000276:immunology*; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D003078:Colchicine / Q000627:therapeutic use; D005260:Female; D005938:Glucocorticoids / Q000627:therapeutic use; D045782:Hemiterpenes / Q000494:pharmacology; D006801:Humans; D007371:Interferon-gamma / Q000097:blood / Q000276:immunology*; D018664:Interleukin-12 / Q000097:blood / Q000276:immunology*; D007963:Leukocytes, Mononuclear / Q000187:drug effects / Q000276:immunology* / Q000378:metabolism; D008213:Lymphocyte Activation / Q000187:drug effects; D008297:Male; D009943:Organophosphorus Compounds / Q000494:pharmacology; D014605:Uveitis / Q000097:blood / Q000188:drug therapy / Q000276:immunology; D038203:alpha-Crystallin B Chain / Q000494:pharmacology
chemical_list: D000942:Antigens, Bacterial; C114325:BES-1 protein, Streptococcus sanguis; D005938:Glucocorticoids; D045782:Hemiterpenes; D009943:Organophosphorus Compounds; D038203:alpha-Crystallin B Chain; D018664:Interleukin-12; C004809:isopentenyl pyrophosphate; D007371:Interferon-gamma; D001379:Azathioprine; D003078:Colchicine