title: Expression of TNFα membrane-bound receptors in the peripheral blood mononuclear cells (PMBC) in rheumatoid arthritis patients.
abstract: OBJECTIVE
  To investigate the expression of TNFα membrane-bound receptors: the percentage of cells expressing these receptors and the number of molecules expressed on different immune cell subsets, and to evaluate serum concentrations of soluble TNFα and its receptors (sTNFRI and sTNFRII) in patients with rheumatoid arthritis in acute stage and after response to treatment compared to healthy donors.
  
  
  METHODS
  The objects of the study are peripheral blood mononuclear cells (PBMC) of healthy donors (n=150) and RA patients (n=40) subjected to hospital treatment with either biological agents (Rituximab) or glucocorticosteroids (methylprednisolone). To determine PBMC phenotype antibodies anti-hCD3-APC, anti-hCD19 PECy7, anti-hCD14 FITC (eBioscience), as well as anti-hTNFRI-PE and anti-hTNFRII-PE (R&D Systems) were used. To determine receptor number on the cells Quantibrite PE Beads (BD) were used.
  
  
  RESULTS
  Cells obtained from patients who responded to therapy and achieved disease remission exhibited either an increase in the percentage of TNFRI+ cells or elevated expression density of this receptor type.
  
  
  CONCLUSIONS
  Subsets of immunocompetent cells from RA patients show variation in the percentage of membrane-bound receptor positive cells and receptor expression density, which influences the development and progression of the pathological processes in RA. Response to therapy and achievement of disease remission are associated with an increase of TNFRI expression.
authors.affiliation: Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology", Yadrintsevskaya Str., 14, Novosibirsk 630099, Russia. Electronic address: sennikovsv@gmail.com.
authors.forename: Sergey V
authors.initials: SV
authors.lastname: Sennikov
authors.affiliation: Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology", Yadrintsevskaya Str., 14, Novosibirsk 630099, Russia. Electronic address: alkkina@yandex.ru.
authors.forename: Alina A
authors.initials: AA
authors.lastname: Alshevskaya
authors.affiliation: Rheumatology Department, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology", Yadrintsevskaya Str., 14, Novosibirsk 630099, Russia. Electronic address: sen-nadezhda@yandex.ru.
authors.forename: Nadezhda S
authors.initials: NS
authors.lastname: Shkaruba
authors.affiliation: Rheumatology Department, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology", Yadrintsevskaya Str., 14, Novosibirsk 630099, Russia. Electronic address: chumoks@mail.ru.
authors.forename: Oksana A
authors.initials: OA
authors.lastname: Chumasova
authors.affiliation: Rheumatology Department, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology", Yadrintsevskaya Str., 14, Novosibirsk 630099, Russia. Electronic address: depaidici@online.nsk.su.
authors.forename: Aleksey E
authors.initials: AE
authors.lastname: Sizikov
authors.affiliation: Laboratory of Molecular Immunology, Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology", Yadrintsevskaya Str., 14, Novosibirsk 630099, Russia. Electronic address: lopatnikova_j_a@ngs.ru.
authors.forename: Julia A
authors.initials: JA
authors.lastname: Lopatnikova
mesh_terms: D000293:Adolescent; D000328:Adult; D001172:Arthritis, Rheumatoid / Q000097:blood*; D016022:Case-Control Studies; D002462:Cell Membrane / Q000378:metabolism*; D005260:Female; D006801:Humans; D007963:Leukocytes, Mononuclear / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D011485:Protein Binding; D047888:Receptors, Tumor Necrosis Factor, Type I / Q000097:blood*; D047889:Receptors, Tumor Necrosis Factor, Type II / Q000097:blood*; D012995:Solubility; D055815:Young Adult
chemical_list: D047888:Receptors, Tumor Necrosis Factor, Type I; D047889:Receptors, Tumor Necrosis Factor, Type II
keywords: Membrane-bound receptors; Receptor expression density; Rheumatoid arthritis; Tumor necrosis factor