Search results for " Interleukin-9"
showing 5 items of 5 documents
Interleukin-9 over-expression and T helper 9 polarization in systemic sclerosis patients.
2017
Summary T helper 9 (Th9) cells and interleukin (IL)-9 are involved in the pathogenesis of several autoimmune diseases. The exact role of IL-9 and Th9 cells in patients with systemic sclerosis (SSc) have not yet been studied adequately. IL-9, IL-9R, transcription factor PU.1 (PU.1), IL-4, thymic stromal lymphopoietin (TSLP) and transforming growth factor (TGF)-β expression were assessed in skin and kidney biopsies of SSc patients and healthy controls (HC) by immunohistochemistry (IHC). The cellular source of IL-9 was also analysed by confocal microscopy analysis. Peripheral IL-9-producing cells were also studied by flow cytometry. The functional relevance of IL-9 increased expression in SSc …
Interleukin (IL)-9/IL-9R axis drives γδ T cells activation in psoriatic arthritis patients
2016
Summary Cytokines such as tumour necrosis factor (TNF)-α, interleukin (IL)-12, interferon (IFN)-γ, IL-23 and, more recently, IL-9, have been implicated in the initiation/maintenance of inflammation in psoriasis and psoriatic arthritis (PsA). In the present study we aimed to characterize the role of γδ T cells in peripheral blood and synovial fluid of PsA patients and to investigate their response to in-vitro stimulation with antigen or cytokines (IL-9 and IL-23). γδ T cells isolated from peripheral blood mononuclear cells and synovial fluid were analysed by flow cytometry to evaluate the phenotype and cytokine production. IL-23R and IL-9R gene expression were also evaluated by reverse trans…
Significance of serum Il-9 levels in inflammatory bowel disease
2015
IL-9, which may be an inflammatory or regulatory cytokine, can be experimentally produced in a Th17 or modified Th2 context in the presence of T cell receptor (TCR) stimulation. The primary aim of this study was to measure serum IL-9 levels in patients with inflammatory bowel disease (IBD), and evaluate their relationships with the patients’ clinical characteristics. The secondary aim was to determine the levels of interferon-γ (IFN (interferon)-γ), Th2 cytokines (IL-4, IL-5 and IL-13), and IL-6 in order to clarify the context of detectable peripheral cytokines in which IL-9 is produced. Venous blood samples of 43 IBD patients (20 with Crohn’s disease [CD] and 23 with ulcerative colitis [U…
Potential involvement of IL-9 and Th9 cells in the pathogenesis of rheumatoid arthritis
2015
Objective IL-9 has been shown to be upregulated before the clinical onset of articular disease in RA. The exact role of IL-9 and Th9 cells in RA, however, has not yet been adequately studied. The aim of this study was to evaluate the expression of IL-9 and IL-9-expressing cells in RA patients. Methods IL-9, IL-9R, PU.1, IL-9, thymic stromal lymphopoietin (TSLP), IL-4 and TGF-β expression was assessed by real-time-PCR in the synovial tissues of RA and OA patients. IL-9, IL-9R, IL-4, TSLP and TGF-β were also investigated by immunohistochemistry. Peripheral CD4(+) T cell subsets were studied by flow cytometry analysis before and after incubation with citrullinated peptides. Results IL-9 was ov…
Detectable interleukin-9 plasma levels are associated with impaired cardiopulmonary functional capacity and all-cause mortality in patients with chro…
2016
Inflammatory activation plays a pivotal role in chronic heart failure (CHF) through the increased expression of pro-inflammatory cytokines [1]. Decreased plasma levels of Interleukin (IL-) 5, IL-7 and Interferon-γ (IFN-γ) and increased levels of IL-9 have been already described in CHF [2], and a negative correlation was also reported between IL-9 and left ventricular ejection fraction (LVEF) [2]. Yet, there are only limited data exploring the association between cytokines and functional capacity in CHF and their prognostic role [3]; therefore, primary end-point of the current study was to evaluate all-cause mortality according to changes in cytokines plasma levels in CHF patients.