نتایج جستجو برای: 23r

تعداد نتایج: 286  

2013
Hui Shen Wei Zhang Clara Abraham Judy H. Cho

The interleukin-23 (IL-23) pathway plays a critical role in the pathogenesis of multiple chronic inflammatory disorders, however, inter-individual variability in IL-23-induced signal transduction in circulating human lymphocytes has not been well-defined. In this study, we observed marked, reproducible inter-individual differences in IL-23 responsiveness (measured by STAT3 phosphorylation) in p...

2009
Philippa Hillyer Maggie J. Larché Edward P. Bowman Terrill K. McClanahan Rene de Waal Malefyt Lauren P. Schewitz Grey Giddins Marc Feldmann Robert A. Kastelein Fionula M. Brennan

OBJECTIVE IL-23 is a pro-inflammatory cytokine proposed to be central to the development of autoimmune disease. We investigated whether IL-23, together with the downstream mediator IL-17A, was present and functional in RA in humans. METHODS RA synovial cells were cultured in the presence or absence of antibodies directed against IL-23p19 or -23R and -17. IL-23, -12, -17, and their receptors, ...

2010
Leigh D Church Andrew D Filer Esther Hidalgo Katherine A Howlett Andrew MC Thomas Stephen Rapecki Dagmar Scheel-Toellner Christopher D Buckley Karim Raza

INTRODUCTION Th17 cells have been implicated in the pathogenesis of rheumatoid arthritis (RA). The aim of this study was to systematically analyse the phenotype, cytokine profile and frequency of interleukin-17 (IL-17) producing CD4-positive T cells in mononuclear cells isolated from peripheral blood, synovial fluid and synovial tissue of RA patients with established disease, and to correlate c...

2011
Jan D. Haas Kiran Nistala Franziska Petermann Namita Saran Vijaykumar Chennupati Susanne Schmitz Thomas Korn Lucy R. Wedderburn Reinhold Förster Andreas Krueger Immo Prinz

Differentiation of T helper 17 cells (Th17) is a multistep process that involves the cytokines IL-6, TGF-β, and IL-23 as well as IL-1β, IL-21, and TNF-α. Thereby, robust induction of the capacity to produce IL-17 involves epigenetic modifications of the syntenic Il17a/f locus. Using inbred mouse strains, we identified co-regulation of gene transcription at the Il17a/f locus with the nearby micr...

2014
Mazdak Ganjalikhani-Hakemi Reza Yazdani Roya Sherkat Vida Homayouni Mohsen Masjedi Mohsen Hosseini

BACKGROUND Common variable immunodeficiency (CVID) is characterized by a deficiency in the immune system with a heterogeneous collection of disorders resulting in antibody deficiency and recurrent infections. T helper 17 (Th17) cells promote B-cell survival and synergize with the B-cell activating factor to induce their differentiation into the plasma cells. A sub-population of innate lymphoid ...

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