keyword
MENU ▼
Read by QxMD icon Read
search

ptpn22

keyword
https://www.readbyqxmd.com/read/28545409/genetic-variation-and-expression-levels-of-tight-junction-genes-identifies-association-between-magi3-and-inflammatory-bowel-disease
#1
Elisabeth Norén, Sven Almer, Jan Söderman
BACKGROUND: Inflammatory bowel disease (IBD) is associated with increased intestinal permeability, which involves paracellular passage regulated through tight junctions (TJ). The aim of the study was to investigate single nucleotide polymorphisms (SNP) located in genes encoding interacting TJ proteins and corresponding expressions, in relation to IBD. METHODS: Allelic associations between TJ-related genes (F11R, MAGI1, MAGI2, MAGI3, PARD3, PTEN, and TJP1) and IBD, Crohn's disease (CD), or ulcerative colitis (UC) were investigated...
May 25, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28537236/-allelic-variants-of-immune-response-genes-in-children-with-infectious-complications-during-the-treatment-of-acute-leukemia
#2
M A Avdonina, I S Abramov, Y I Ammour, T V Nasedkina
Infectious complications that arise during the treatment of children with acute leukemia with chemotherapeutic agents at high doses represent a serious problem in oncohematology. To find genetic conditions that may lead to the development of postchemotherapy infections, the genomes of 12 children with acute leukemia who had severe infectious complications during therapy were examined. At the same time, the coding regions of 17 genes involved in the regulation of the immune response were determined by massive parallel sequencing...
March 2017: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/28528372/associations-between-ptpn22-and-tlr9-polymorphisms-and-systemic-lupus-erythematosus-a-comprehensive-meta-analysis
#3
Li-Ya Hu, Zhi Cheng, Bo Zhang, Qiong Yin, Xiao-Wei Zhu, Pian-Pian Zhao, Ming-Yu Han, Xiao-Bo Wang, Hou-Feng Zheng
Previous studies have explored the relationship of PTPN22 and TLR9 polymorphisms with systemic lupus erythematosus (SLE). In consideration of the population stratification, conflicting results and updating data, we conducted a comprehensive meta-analysis, which consists of a total of 17 research articles (9120 cases and 11,724 controls) for PTPN22 and 20 articles (including up to 2808 cases and 3386 controls) for TLR9. Significant association was verified between PTPN22 rs2476601 and SLE in the overall population (OR = 1...
May 20, 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/28527290/association-of-polymorphic-variants-of-ptpn22-tnf-and-vdr-genes-in-children-with-lupus-nephritis-a-study-in-colombian-family-triads
#4
Gloria Garavito, Eduardo Egea, Luis Fang, Clara Malagón, Carlos Olmos, Luz González, Pilar Guarnizo, Gustavo Aroca, Guillermo López, Antonio Iglesias
INTRODUCTION: Systemic lupus erythematosus is an autoimmune disease in which the severity varies according to race, sex and age of onset. This variation is also observed in the genetic markers associated with the disease, including PTPN22, VDR and TNF genes. The genetic stratification in different populations worldwide can influence the variability. OBJECTIVE: To analyze the heritability of PTPN22, VDR and TNF genetic variants and their association with pediatric lupus nephritis in Colombian families...
June 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28522807/traf3-enhances-tcr-signaling-by-regulating-the-inhibitors-csk-and-ptpn22
#5
Alicia M Wallis, Ellie C Wallace, Bruce S Hostager, Zuoan Yi, Jon C D Houtman, Gail A Bishop
The adaptor protein TNF receptor associated factor (TRAF) 3 is required for effective TCR signaling and normal T cell effector functions, and associates with the CD3/CD28 complex upon activation. To determine how TRAF3 promotes proximal TCR signaling, we studied TRAF3-deficient mouse and human T cells, which showed a marked reduction in activating phosphorylation of the TCR-associated kinase Lck. The impact of TRAF3 on this very early signaling event led to the hypothesis that TRAF3 restrains one or both of two known inhibitors of Lck, C-terminal Src kinase (Csk) and protein tyrosine phosphatase N22 (PTPN22)...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28504962/association-of-stat4-and-ptpn22-polymorphisms-and-their-interactions-with-type-1-autoimmune-hepatitis-susceptibility-in-chinese-han-children
#6
Xiaofeng Li, Huiqin Chen, Yun Cai, Pingping Zhang, Zhuanggui Chen
AIMS: To investigate the impact of signal transducer and activator of transcription 4 (STAT4) and the protein tyrosine phosphatase N22 (PTPN22) gene single nucleotide polymorphisms (SNPs), gene- gene interactions and haplotype on type-1 Autoimmune Hepatitis (AIH) risk. RESULTS: Logistic regression analysis showed that type 1 AIH was significantly higher in carriers of T allele of rs7574865 than those with GG genotype (P- value less than 0.001), higher in carriers of C allele of rs7582694 than those with GG genotype (P- value < 0...
April 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28500376/the-ptpn22-r263q-polymorphism-confers-protection-against-systemic-lupus-erythematosus-and-rheumatoid-arthritis-while-ptpn22-r620w-confers-susceptibility-to-graves-disease-in-a-mexican-population
#7
Daniela Josabeth López-Cano, Daniel Cadena-Sandoval, Olga Beltrán-Ramírez, Rosa Elda Barbosa-Cobos, Fausto Sánchez-Muñoz, Luis Manuel Amezcua-Guerra, Yaneli Juárez-Vicuña, María Concepción Aguilera-Cartas, José Moreno, Jesús Bautista-Olvera, Guillermo Valencia-Pacheco, Ricardo F López-Villanueva, Julian Ramírez-Bello
OBJECTIVE: The functional PTPN22 R620W polymorphism (rs2476601) is clearly associated with susceptibility to several autoimmune diseases (ADs). However, the PTPN22 R263Q polymorphism (rs33996649) has been scarcely explored in different ADs. Here we aimed to examine the associations of the PTPN22 R620W and R263Q polymorphisms with susceptibility to or protection against rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), and Graves' disease (GD) among Mexican patients. METHODS: We conducted a case-control study including 876 patients (405 with SLE, 388 with RA, and 83 with GD) and 336 healthy control individuals...
May 12, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28481156/association-of-ptpn22-single-nucleotide-polymorphisms-with-celiac-disease
#8
Majid Aflatounian, Arezou Rezaei, Maryam Sadr, Amene Saghazadeh, Nazanin Elhamian, Hengameh Sadeghi, Fatemeh Motevasselian, Fatemeh Farahmand, Gholamhossein Fallahi, Farzaneh Motamed, Mehri Najafi, Nima Rezaei
OBJECTIVES: Celiac disease is a chronic autoimmune disease in which gene-environment interactions cause the immune system to unfavorably react to naturally gluten-containing foods. PTPN22 plays a crucial role in regulating the function of various cells of the immune system, particularly T cells. Polymorphisms of the PTPN22 gene have been associated with many autoimmune diseases. The present genetic association study was conducted to investigate the possible associations between PTPNTT single nucleotide polymorphisms (SNPs) and celiac disease in an Iranian population...
May 8, 2017: Fetal and Pediatric Pathology
https://www.readbyqxmd.com/read/28444099/association-of-the-protein-tyrosine-phosphatase-non-receptor-22-polymorphism-ptpn22-with-endometriosis-a-meta-analysis
#9
Noel Pabalan, Hamdi Jarjanazi, Denise Maria Christofolini, Bianca Bianco, Caio Parente Barbosa
Objective: To evaluate PTPN22 C1858T polymorphism and the risk of endometriosis. Methods: A meta-analysis of 10 published case-control studies (from four articles), with a total sample of 971 cases and 1,181 controls, was performed. We estimated risk (odds ratio and 95% confidence intervals) of endometriosis associations with the C1858T polymorphism. Results: A significant increased risk in all genetic models of the variant T allele with endometriosis (odds ratio: 3...
January 2017: Einstein
https://www.readbyqxmd.com/read/28439269/genome-wide-identification-of-target-genes-for-the-key-b-cell-transcription-factor-ets1
#10
Prontip Saelee, Alyssa Kearly, Stephen L Nutt, Lee Ann Garrett-Sinha
BACKGROUND: The transcription factor Ets1 is highly expressed in B lymphocytes. Loss of Ets1 leads to premature B cell differentiation into antibody-secreting cells (ASCs), secretion of autoantibodies, and development of autoimmune disease. Despite the importance of Ets1 in B cell biology, few Ets1 target genes are known in these cells. RESULTS: To obtain a more complete picture of the function of Ets1 in regulating B cell differentiation, we performed Ets1 ChIP-seq in primary mouse B cells to identify >10,000-binding sites, many of which were localized near genes that play important roles in B cell activation and differentiation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28438156/relative-contribution-of-type-1-and-type-2-diabetes-loci-to-the-genetic-etiology-of-adult-onset-non-insulin-requiring-autoimmune-diabetes
#11
Rajashree Mishra, Alessandra Chesi, Diana L Cousminer, Mohammad I Hawa, Jonathan P Bradfield, Kenyaita M Hodge, Vanessa C Guy, Hakon Hakonarson, Didac Mauricio, Nanette C Schloot, Knud B Yderstræde, Benjamin F Voight, Stanley Schwartz, Bernhard O Boehm, Richard David Leslie, Struan F A Grant
BACKGROUND: In adulthood, autoimmune diabetes can present as non-insulin-requiring diabetes, termed as 'latent autoimmune diabetes in adults' (LADA). In this study, we investigated established type 1 diabetes (T1D) and type 2 diabetes (T2D) genetic loci in a large cohort of LADA cases to assess where LADA is situated relative to these two well-characterized, classic forms of diabetes. METHODS: We tested the association of T1D and T2D GWAS-implicated loci in 978 LADA cases and 1057 non-diabetic controls of European ancestry using a linear mixed model...
April 25, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28437437/use-of-short-interfering-rna-delivered-by-cationic-liposomes-to-enable-efficient-down-regulation-of-ptpn22-gene-in-human-t-lymphocytes
#12
Valentina Perri, Marsha Pellegrino, Francesca Ceccacci, Anita Scipioni, Stefania Petrini, Elena Gianchecchi, Anna Lo Russo, Serena De Santis, Giovanna Mancini, Alessandra Fierabracci
Type 1 diabetes and thyroid disease are T cell-dependent autoimmune endocrinopathies. The standard substitutive administration of the deficient hormones does not halt the autoimmune process; therefore, development of immunotherapies aiming to preserve the residual hormonal cells, is of crucial importance. PTPN22 C1858T mutation encoding for the R620W lymphoid tyrosine phosphatase variant, plays a potential pathophysiological role in autoimmunity. The PTPN22 encoded protein Lyp is a negative regulator of T cell antigen receptor signaling; R620W variant, leading to a gain of function with paradoxical reduced T cell activation, may represent a valid therapeutic target...
2017: PloS One
https://www.readbyqxmd.com/read/28430763/protective-effect-of-pinitol-against-inflammatory-mediators-of-rheumatoid-arthritis-via-inhibition-of-protein-tyrosine-phosphatase-non-receptor-type-22-ptpn22
#13
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 doses of pinitol and indomethacin for 28 days. The arthritic index and body weight were determined at regular intervals, together with hepatic, hematological, and antioxidant parameters...
April 21, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28424905/association-of-stat4-rs7574865-and-ptpn22-rs2476601-polymorphisms-with-rheumatoid-arthritis-and-non-systemically-reacting-antibodies-in-egyptian-patients
#14
Dalia El-Lebedy, Hala Raslan, Alshaymaa Ibrahim, Ingy Ashmawy, Shereen Abd El-Aziz, Asmaa M Mohammed
The aim of this study was to investigate association of protein tyrosine phosphatase non-receptor type 22 (PTPN22) rs2476601 and signal transducer and activator of transcription 4 (STAT4) rs7574865 polymorphisms with rheumatoid arthritis (RA) susceptibility and to assess potential association with the status of rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP) antibodies, serum neopterin, and disease activity. RF, anti-CCP antibodies, and neopterin were assayed in serum of 100 unrelated RA patients and 114 controls...
April 19, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28375784/ptpn22-single-nucleotide-polymorphisms-in-iranian-patients-with-type-1-diabetes-mellitus
#15
Farzaneh Abbasi, Samaneh Soltani, Amene Saghazadeh, Ehsan Soltaninejad, Arezou Rezaei, Alireza Zare Bidoki, Tayyeb Bahrami, Ali Akbar Amirzargar, Nima Rezaei
BACKGROUND: PTPN22 plays a crucial role in regulating the function of various cells of the immune system, particularly T cells. Polymorphisms of the PTPN22 gene have been associated with many autoimmune diseases, including type 1 diabetes (T1D) which is a T-cell-mediated disease. OBJECTIVE: The present study was aimed at genotyping of an Iranian population for five polymorphisms of the PTPN22 gene. METHODS: The study population consisted of 99 T1D patients and 100 healthy controls...
April 4, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28364254/characterisation-of-rapid-progressors-to-type-1-diabetes-among-children-with-hla-conferred-disease-susceptibility
#16
Petra M Pöllänen, Johanna Lempainen, Antti-Pekka Laine, Jorma Toppari, Riitta Veijola, Paula Vähäsalo, Jorma Ilonen, Heli Siljander, Mikael Knip
AIMS/HYPOTHESIS: In this study, we aimed to characterise rapid progressors to type 1 diabetes among children recruited from the general population, on the basis of HLA-conferred disease susceptibility. METHODS: We monitored 7410 HLA-predisposed children participating in the Finnish Type 1 Diabetes Prediction and Prevention (DIPP) study for the development of beta cell autoimmunity and type 1 diabetes from birth over a median follow-up time of 16.2 years (range 0...
March 31, 2017: Diabetologia
https://www.readbyqxmd.com/read/28291534/ptpn22-1123g-c-polymorphism-and-anti-cyclic-citrullinated-protein-antibodies-in-rheumatoid-arthritis
#17
José Francisco Muñoz-Valle, Jorge Ramón Padilla-Gutiérrez, Jorge Hernández-Bello, Yeniley Ruiz-Noa, Yeminia Valle, Claudia Azucena Palafox-Sánchez, Isela Parra-Rojas, Sergio Ramón Gutiérrez-Ureña, Hector Rangel-Villalobos
BACKGROUND AND OBJECTIVES: The protein tyrosine phosphatase non-receptor type 22 (PTPN22) gene encodes an important negative regulator of T-cell activation, lymphoid-specific phosphatase -Lyp- and has been associated with different autoimmune disorders. The PTPN22 -1123G>C polymorphism appears to affect the transcriptional control of this gene, but to date, the biological significance of this polymorphisms on rheumatoid arthritis (RA) risk remains unknown. We evaluate the association of PTPN22 -1123G>C polymorphism with anti-cyclic citrullinated protein antibodies (anti-CCP) and risk for RA in population from Western Mexico...
March 10, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28262800/the-influence-of-population-stratification-on-genetic-markers-associated-with-type-1-diabetes
#18
Karla Fabiana Brasil Gomes, Aritânia Sousa Santos, Cintia Semzezem, Márcia Regina Correia, Luciano Abreu Brito, Marcelo Ortega Ruiz, Rosa Tsuneshiro Fukui, Sergio Russo Matioli, Maria Rita Passos-Bueno, Maria Elizabeth Rossi da Silva
Ethnic admixtures may interfere with the definition of type 1 diabetes (T1D) risk determinants. The role of HLA, PTPN22, INS-VNTR, and CTLA4 in T1D predisposition was analyzed in Brazilian T1D patients (n = 915), with 81.7% self-reporting as white and 789 controls (65.6% white). The results were corrected for population stratification by genotyping 93 ancestry informative markers (AIMs) (BeadXpress platform). Ancestry composition and structural association were characterized using Structure 2.3 and STRAT...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28243041/rs2476601-polymorphism-in-ptpn22-is-associated-with-crohn-s-disease-but-not-with-ulcerative-colitis-a-meta-analysis-of-16-838-cases-and-13-356-controls
#19
Abdellah Hedjoudje, Chérifa Cheurfa, Clément Briquez, Allen Zhang, Stéphane Koch, Lucine Vuitton
BACKGROUND: Although the rs2476601 polymorphism of PTPN22 has been reported to be a susceptibility gene for Crohn's disease (CD), results from different studies vary and remain inconclusive. Also, no association has been found between rs2476601 and the risk of ulcerative colitis (UC). The aim of this meta-analysis was to investigate the association between this PTPN22 polymorphism (rs2476601) and the risk of inflammatory bowel disease, UC and CD. METHODS: We performed a meta-analysis by identifying relevant candidate gene-based studies from EMBASE and MEDLINE...
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/28237724/the-common-autoimmunity-predisposing-620arg%C3%A2-%C3%A2-trp-variant-of-ptpn22-modulates-macrophage-function-and-morphology
#20
Meihang Li, Hugues Beauchemin, Natalija Popovic, Alan Peterson, Eva d'Hennezel, Ciriaco A Piccirillo, Chao Sun, Constantin Polychronakos
The C1858T single nucleotide polymorphism (SNP) in PTPN22 (protein tyrosine phosphatase nonreceptor 22) leads to the 620 Arg to Trp polymorphism in its encoded human protein LYP. This allelic variant is associated with multiple autoimmune diseases, including type 1 diabetes (T1D), Crohn's disease, rheumatoid arthritis and systemic lupus erythematosus. However, the underlying mechanisms are poorly understood. To study how this polymorphism influences the immune system, we generated a mouse strain with a knock-in of the Trp allele, imitating the human disease-associated variant...
February 22, 2017: Journal of Autoimmunity
keyword
keyword
30904
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"