0000000000406157

AUTHOR

Melissa Van Tok

showing 2 related works from this author

Non-conventional forms of HLA-B27 are expressed in spondyloarthritis joints and gut tissue

2016

Objectives Human leukocyte antigen (HLA)-B27 (B27) is the strongest genetic factor associated with development of Ankylosing Spondylitis and other spondyloarthropathies (SpA), yet the role it plays in disease pathogenesis remains unclear. We investigated the expression of potentially pathogenic non-conventional heavy chain forms (NC) of B27 in synovial and intestinal tissues obtained from SpA patients. We also determined the presence of NC-B27 in joints, lymphoid and gastrointestinal tissue from B27 transgenic (TG1) rats with M.tuberculosis-induced SpA. Methods Expression of NC-B27 in human SpA joints and gut and in (21-3 × 283-2)F1 HLA-B27/Huβ2m rat tissue was determined by immunohistochem…

musculoskeletal diseasesalpha-DefensinsHLA-B27 transgenic rat modelGastrointestinal DiseasesCD8 AntigensImmunologyGene ExpressionArticleSpondyloarthropathieAnimalsHumansHLA class I free-heavy chainImmunology and AllergySpondylitis AnkylosingSpondyloarthropathiesskin and connective tissue diseasesHLA-B27 AntigenHLA-B27CD11 AntigensHistocompatibility Antigens Class ISynovial MembraneReceptors KIR3DL2Arthritis ExperimentalR1HLA class I free-heavy chainsRatsDisease Models AnimalSettore MED/16 - ReumatologiaHLA class I free-heavy chains; HLA-B27; HLA-B27 transgenic rat model; Spondyloarthropathies; Immunology and Allergy; ImmunologyBone RemodelingRats Transgenic
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IL-9 IN PsA

2016

Objective. To investigate the expression and tis- sue distribution of Th9-related cytokines in patients with psoriatic arthritis (PsA). Methods. Quantitative gene expression analysis of Th1, Th17, and Th9 cytokines was performed in intestinal biopsy samples obtained from patients with PsA, HLA2B272positive patients with ankylosing spondylitis (AS), patients with Crohn’s disease (CD), and healthy controls. Expression and tissue distribu- tion of interleukin-23 (IL-23), IL-17, IL-22, IL-9, and IL-9 receptor (IL-9R) were evaluated by immunohisto- chemistry and confocal microscopy. Flow cytometry was used to study the frequency of Th9 cells among periph- eral blood, lamina propria, and synovial…

InflammationMalePsoriatic arthritis gut inflammation synoviasynoviaArthritis PsoriaticSynovial MembranePsoriatic ArthritisInterleukin-9T-Lymphocytes Helper-InducerReceptors Tumor Necrosis FactorIntestinesSettore MED/16 - ReumatologiaGene Expression RegulationTh9 cellHumansFemaleUstekinumabGutSynovial Tissuegut inflammationInterleukin-9 Th9 cells Gut Synovial Tissue Psoriatic Arthritis
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