Literatura científica selecionada sobre o tema "Spondyloarthrites – physiopathologie"
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Artigos de revistas sobre o assunto "Spondyloarthrites – physiopathologie"
Wendling, Daniel. "Implication de la voie Th17 dans la physiopathologie des spondyloarthrites". Bulletin de l'Académie Nationale de Médecine 199, n.º 7 (outubro de 2015): 1177–85. http://dx.doi.org/10.1016/s0001-4079(19)30857-x.
Texto completo da fonteWendling, Daniel. "La spondyloarthrite. Des multiples facettes cliniques à la cohérence physiopathologique". Revue du Rhumatisme Monographies 81, n.º 4 (setembro de 2014): 215. http://dx.doi.org/10.1016/j.monrhu.2014.04.004.
Texto completo da fonteBougault, C., e L. Brizuela. "AB0149 Role of Sphingosine 1-Phosphate Metabolic Pathway in Spondyloarthritis Physiopathology". Annals of the Rheumatic Diseases 74, Suppl 2 (junho de 2015): 940.2–940. http://dx.doi.org/10.1136/annrheumdis-2015-eular.2948.
Texto completo da fonteMathieu, Sylvain, Marion Couderc, Bruno Pereira, Jean-Jacques Dubost, Sandrine Malochet-Guinamand, Anne Tournadre, Martin Soubrier e Xavier Moisset. "Prevalence of Migraine and Neuropathic Pain in Rheumatic Diseases". Journal of Clinical Medicine 9, n.º 6 (17 de junho de 2020): 1890. http://dx.doi.org/10.3390/jcm9061890.
Texto completo da fonteMashayekhi Sardoo, A., D. Sobral, L. Domingues, S. Rodrigues-Manica, R. Pinheiro Torres, A. Neto, P. Alves et al. "THU0021 IDENTIFICATION OF MUSCLE ASSOCIATED KEY GENES TO SUPPORT AXIAL SPONDYLOARTHRITIS DIAGNOSIS BY TRANSCRIPTOMIC APPROACH, THE MYOSPA STUDY". Annals of the Rheumatic Diseases 79, Suppl 1 (junho de 2020): 223.2–224. http://dx.doi.org/10.1136/annrheumdis-2020-eular.5331.
Texto completo da fonteTeses / dissertações sobre o assunto "Spondyloarthrites – physiopathologie"
Hecquet, Sophie. "Inflammation et perméabilité intestinales et translocation bactérienne en cas d'arthrite : études précliniques et cliniques". Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCE024.
Texto completo da fonteThe pathophysiology of spondyloarthritis (SpA) is complex and involves several cellular and tissue players, including the intestinal tissue. The latter plays an essential role by allowing the passage of molecules of varying molecular weights, while also limiting the translocation of pathogenic agents. Intestinal inflammation and loss of intestinal barrier function have been observed in patients with SpA. Data suggest that this hyperpermeability may be related to the increase in serum zonulin observed in these patients, a precursor protein of haptoglobin 2 and a physiological modulator of intestinal epithelial tight junctions.Various hypotheses attempt to explain the increased intestinal permeability and elevated circulating zonulin in patients with SpA, with intestinal inflammation and dysbiosis being central factors. Changes in the intestinal microbiota have been observed in patients with SpA, although its role in the disease’s pathophysiology is still poorly understood. It has been demonstrated that the presence of enteroinvasive bacteria in the ileum of SpA patients leads to tissue overexpression of zonulin and underexpression of structural proteins in intestinal epithelial tight junctions. Dysbiosis and increased intestinal permeability would thus allow the translocation of bacterial antigens from the intestinal lumen to the digestive mucosa, triggering an immune system activation. These data highlight the key pathophysiological role of digestive permeability and bacterial translocation in SpA patients, although no studies have yet clearly linked them or defined the timing of their occurrence during the course of the disease.Animal models offer a unique opportunity to highlight the pathophysiological characteristics of inflammatory rheumatic diseases. They also allow for the study of the physiological properties of deep organs, such as the digestive tract, in treatment-naive animals at different stages of disease progression, including preclinical stages. Our team has conducted numerous studies on the adjuvant-induced arthritis (AIA) model, a recent arthritis model. This model is characterized by acute inflammation followed by a phase of bone formation and by the polarization of the immune response towards the IL-23/Th17 pathway. This model is of particular interest because our team has identified early endothelial dysfunction at the mesenteric level at the onset of arthritis development, suggesting early intestinal involvement in this model.The overall objective of this thesis was to characterize the digestive abnormalities observed in the AIA model and to study the effect of different pharmacological treatments on the intestinal barrier. The first study aimed to examine the comparative kinetics of joint involvement and digestive abnormalities. This study focused on four main aspects: intestinal permeability, intestinal and joint inflammation, dysbiosis, and bacterial translocation. It shed light on potential links between digestive disturbances and joint symptoms, thus paving the way for new therapeutic options. The second study evaluated the impact of different steroidal and non-steroidal anti-inflammatory drugs (NSAIDs) on the intestinal barrier in the adjuvant-induced arthritis model. This study showed a differentiated effect of NSAIDs on the intestinal barrier depending on the selectivity of cyclooxygenase inhibition. Finally, the third study investigated the effect of tofacitinib on the intestinal barrier
Jouhault, Quentin. "Modulation de la balance Th17/Treg par l’IL-27 et ICOS dans un modèle animal de Spondyloarthrite". Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLV008/document.
Texto completo da fonteSpondyloarthritis (SpA) is a frequent chronic rheumatic inflammatory disorder with a prevalence of 0.43% in France and closely associated to HLA-B27. To date, there is no curative treatment and pathophysiological mechanisms involved in this pathology remain elusive. To better understand these mechanisms, we studied two crucial cell populations, dendritic cells (DC) and CD4+ T cells in rats transgenic for HLA-B27 and human β2 microglobulin (B27 rats) which spontaneously develop a phenotype closely resembling human spndyloarthritis. Previous studies demonstrated that accumulation of pathogenic IL-17 producing T cells (Th17 cells) and several function defects of DCs are correlated with SpA development in B27 rats.First, we focused on regulatory T cells, whose role is to prevent the establishment of pathogenic immune responses. We discovered that Treg from B27 rats have a pro-inflammatory phenotype. They overexpress IL-17 and underexpress anti-inflammatory IL-10, linked to ICOS overexpression. Furthermore, B27 rats knock-out for ICOS (B27 ICOS KO rats) have reduced severity of clinical symptoms compared to B27 ICOS WT rats. This protective effect is correlated with a reduced proportion of Th17 cells. These results highlight the crucial role of ICOS in rat SpA physiopathology.In the second part of this work we studied the consequences of IL-27 underexpression by B27 DC, a cytokine known to inhibit Th17 development. Addition of exogenous IL-27 reduces IL-17 and increases IL-10 productions by differentiated T cells (Teff and Treg) and by naive T cells polarized in vitro. Interestingly, IL-27 also reduces IL-17 production by circulating CD4+ T cells isolated from blood of SpA patients.This work demonstrate for the first time the key role of IL-27 and ICOS in the control of inflammation in B27 rats and highly suggest that these molecules may be new promising therapeutic targets in SpA
Talpin, Alice. "Complexe Majeur d’Histocompatibilité et génomique fonctionnelle dans les spondylarthrites". Thesis, Paris 5, 2013. http://www.theses.fr/2013PA05T037/document.
Texto completo da fonteSpondyloarthritis (SpA) is a frequent chronic inflammatory rheumatic disorder, with a prevalence of 0.3% in France. Pathological mechanisms leading to SpA remain largely uncertain. Nevertheless, the heritability of this disorder is high, likely involving multiple genetic factors, among which the major histocompatibility complex (MHC) region and particularly the HLA-B27 allele which plays a prominent role. The objective of this work was to achieve a better understanding of SpA physiopathology via genetic and transcriptomic approaches. The first part of my work consisted in identification of MHC polymorphisms associated with SpA, distinct of HLA-B27. Association studies based on the genetic data of 3 independent cohorts have allowed to identify 5 SNPs associated to SpA, independently of HLA-B27. Two polymorphisms localized next to MICA and MAPK14 genes seem particularly interesting for their implication in SpA pathogenesis. In parallel of this study, we characterized HLA-B27 prevalence in a French cohort corresponding to 6.9% in healthy controls and 74.2% in SpA patients. Functional studies on monocyte-derived dendritic cells (MD-DCs) revealed altered capacity to stimulate allogeneic CD4+ T cell responses by MD-DCs from SpA patients and a transcriptomic signature of 81 genes differentially expressed in those cells, as compared to those from healthy controls. Among validated genes, ADAMTS15, F13A1 and SELL could play a role in SpA inflammation, whereas CITED2 seemed to be correlated to Wnt pathway. Finally, a strong correlation between ERAP1 SpA-susceptibility haplotype and an increased expression of this gene and the ERAP1 protein has been identified