نتایج جستجو برای: ptpn22

تعداد نتایج: 605  

2008
Tracey M Farragher Nicola J Goodson Haris Naseem Alan J Silman Wendy Thomson Deborah Symmons Anne Barton

OBJECTIVE To examine the role of the variants of the PTPN22 and HLA-DRB1 genes as predictors of mortality in inflammatory polyarthritis (IP) and rheumatoid arthritis (RA). METHODS Patients were recruited from a primary care-based inception cohort of patients with IP and were followed up prospectively. For patients who died, the cause and date of death was obtained. Cox proportional hazards re...

2016
Vijay Joshua Loes Schobers Philip J Titcombe Lena Israelsson Johan Rönnelid Monika Hansson Anca I Catrina Ger J M Pruijn Vivianne Malmström

BACKGROUND Antibodies against citrullinated proteins (ACPA) are common in patients with rheumatoid arthritis (RA). ACPA can appear before disease onset and target many self-antigens. Citrullinated fibrin/fibrinogen represents a classical ACPA target antigen, and mass spectrometry of RA synovial fluid reveals elevated citrullinated (cit) fibrinogen (Fib) peptides compared to non-RA controls. We ...

2011
Saedis Saevarsdottir Bo Ding Kristjan Steinsson Gerdur Grondal Helgi Valdimarsson Lars Alfredsson Lars Klareskog Leonid Padyukov

INTRODUCTION Previous studies have provided inconsistent results on whether variants in the MBL2 gene, coding for the complement-activating mannan-binding lectin (MBL) protein, associate with rheumatoid arthritis (RA). We re-evaluated this in context of the main environmental and genetic risk factors (smoking, HLA-DRB1 'shared epitope' (SE), PTPN22*620W), which predispose to rheumatoid factor (...

Journal: :Annals of the rheumatic diseases 2015
Rachel Bayley Kerry A Kite Helen M McGettrick Jacqueline P Smith George D Kitas Christopher D Buckley Stephen P Young

OBJECTIVES A genetic variant of the leukocyte phosphatase PTPN22 (R620W) is strongly associated with autoimmune diseases including rheumatoid arthritis (RA). Functional studies on the variant have focussed on lymphocytes, but it is most highly expressed in neutrophils. We have investigated the effects of the variant on neutrophil function in health and in patients with RA. METHODS Healthy ind...

2017
Kewen Zheng Zhixuan Zhao Na Lin Yiyan Wu Ying Xu Wanli Zhang

BACKGROUND The aim of the current study was to explore the anti-arthritic effect of pinitol via assessing its effect on various inflammatory mediators and its possible mechanism of action. MATERIAL AND METHODS We assessed the anti-arthritic effect of pinitol in a formaldehyde- and CFA-induced arthritic model in Wistar Swiss albino strain rats divided into 6 groups. The rats received different d...

2017
Xian-Hua Wang Ai-Guo Ma Xiu-Xia Han Lei Chen Hui Liang Aishan-Litifu Abudumijit-Ablez Feng Xue

AIMS To investigate the association of several single nucleotide polymorphisms (SNPs) within Protein tyrosine phosphatase nonreceptor type 22 (PTPN22) gene and additional gene- gene and gene- type 2 diabetes mellitus (T2DM) interaction with pulmonary tuberculosis (PTB) risk in Chinese Uygur population. METHODS A total of 722 participants (186 males, 536 females) were selected, including 360 P...

2013
Bahram Namjou Xana Kim-Howard Celi Sun Adam Adler Sharon A. Chung Kenneth M. Kaufman Jennifer A. Kelly Stuart B. Glenn Joel M. Guthridge Robert H. Scofield Robert P. Kimberly Elizabeth E. Brown Graciela S. Alarcón Jeffrey C. Edberg Jae-Hoon Kim Jiyoung Choi Rosalind Ramsey-Goldman Michelle A. Petri John D. Reveille Luis M. Vilá Susan A. Boackle Barry I. Freedman Betty P. Tsao Carl D. Langefeld Timothy J. Vyse Chaim O. Jacob Bernardo Pons-Estel Timothy B. Niewold Kathy L. Moser Sivils Joan T. Merrill Juan-Manuel Anaya Gary S. Gilkeson Patrick M. Gaffney Sang-Cheol Bae Marta E. Alarcón-Riquelme John B. Harley Lindsey A. Criswell Judith A. James Swapan K. Nath

Protein tyrosine phosphatase non-receptor type 22 (PTPN22) is a negative regulator of T-cell activation associated with several autoimmune diseases, including systemic lupus erythematosus (SLE). Missense rs2476601 is associated with SLE in individuals with European ancestry. Since the rs2476601 risk allele frequency differs dramatically across ethnicities, we assessed robustness of PTPN22 assoc...

Journal: :Diabetes 2008
Camilla Cervin Valeriya Lyssenko Ekaterine Bakhtadze Eero Lindholm Peter Nilsson Tiinamaija Tuomi Corrado M Cilio Leif Groop

OBJECTIVE Latent autoimmune diabetes in adults (LADA) is often considered a slowly progressing subtype of type 1 diabetes, although the clinical picture more resembles type 2 diabetes. One way to improve classification is to study whether LADA shares genetic features with type 1 and/or type 2 diabetes. RESEARCH DESIGN AND METHODS To accomplish this, we studied whether LADA shares variation in...

Journal: :Journal of medical genetics 2005
H Qu M-C Tessier T J Hudson C Polychronakos

G enetic susceptibility to the autoimmune B cell destruction that leads to Type 1 diabetes mellitus (T1D) is a complex trait. In recent years, many T1D associations have been reported, but only three (major histocompatibility complex, insulin, and cytotoxic T lymphocyte associated protein 4) have been confirmed in several independent studies. 3 Independent confirmation is essential to eliminate...

Journal: :Diabetes 2008
Magdalena Zoledziewska Chiara Perra Valeria Orrù Loredana Moi Paola Frongia Mauro Congia Nunzio Bottini Francesco Cucca

OBJECTIVE The minor allele of the nonsynonymous single nucleotide polymorphism (SNP) +1858C>T within the PTPN22 gene is positively associated with type 1 diabetes and other autoimmune diseases. Genetic and functional data underline its causal effect, but some studies suggest that this polymorphism does not entirely explain disease association of the PTPN22 region. The aim of this study was to e...

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