title: T-cell receptor repertoire of circulating gamma delta T-cells in Takayasu's arteritis.
abstract: We studied T-cell receptor (TCR) repertoire of circulating gamma delta (gammadelta) T-cells in 20 patients with Takayasu's arteritis (TA), 20 healthy controls (HC), 7 follow up TA patients, and 10 patients with rheumatoid arthritis (RA) and 5 Wegener's granulomatosis (WG) patients as disease controls. Patients with TA (8.1 +/- 5.1%) compared to HC (3.7 +/- 2.1%, P = 0.014), RA (4.8 +/- 0.6%, P = 0.032), and WG (4.2 +/- 0.8%, P = 0.030) as well as active TA compared to inactive TA (13.9 +/- 4.1% vs. 4.9 +/- 1.5%; P < 0.001) had higher number of gammadelta T-cells. The numbers of Vdelta1+ cells were significantly higher in patients with TA (40.0 +/- 20.8%) than HC (13.1 +/- 8.0%; P = 0.001), RA (19.5 +/- 1.8%, P = 0.004), and WG (17.0 +/- 3.9%, P = 0.007). The numbers of gammadelta T-cells normalized in all the 7 patients after 180 days of follow up (13.9 +/- 4.1% vs. 6.9 +/- 2.5%; P = 0.001). We also observed higher number of activated and IFN-gamma producing gammadelta T-cells in active TA. Our data show that gammadelta T-cells particularly those bearing Vdelta1 TCR may have an important role in the immunopathogenesis of TA.
authors.affiliation: Department of Hematology, Sanjay Gandhi Post-Graduate Institute of Medical Sciences, Raebareli Road, Lucknow-226014, India.
authors.forename: Sunil Kumar
authors.initials: SK
authors.lastname: Chauhan
authors.forename: Naresh Kumar
authors.initials: NK
authors.lastname: Tripathy
authors.forename: Nakul
authors.initials: N
authors.lastname: Sinha
authors.forename: Soniya
authors.initials: S
authors.lastname: Nityanand
mesh_terms: D000328:Adult; D001172:Arthritis, Rheumatoid / Q000235:genetics / Q000276:immunology / Q000378:metabolism; D002478:Cells, Cultured; D005260:Female; D005434:Flow Cytometry; D016694:Gene Rearrangement, delta-Chain T-Cell Antigen Receptor; D015334:Gene Rearrangement, gamma-Chain T-Cell Antigen Receptor; D014890:Granulomatosis with Polyangiitis / Q000276:immunology / Q000378:metabolism; D006801:Humans; D008297:Male; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000096:biosynthesis / Q000097:blood* / Q000235:genetics; D016176:T-Lymphocyte Subsets / Q000276:immunology* / Q000378:metabolism*; D013625:Takayasu Arteritis / Q000235:genetics / Q000276:immunology* / Q000378:metabolism
chemical_list: D016692:Receptors, Antigen, T-Cell, gamma-delta