keyword
MENU ▼
Read by QxMD icon Read
search

HLA-DQ

keyword
https://www.readbyqxmd.com/read/28803690/new-insights-into-non-conventional-epitopes-as-t-cell-targets-the-missing-link-for-breaking-immune-tolerance-in-autoimmune-disease
#1
REVIEW
James Harbige, Martin Eichmann, Mark Peakman
The mechanism by which immune tolerance is breached in autoimmune disease is poorly understood. One possibility is that post-translational modification of self-antigens leads to peripheral recognition of neo-epitopes against which central and peripheral tolerance is inadequate. Accumulating evidence points to multiple mechanisms through which non-germline encoded sequences can give rise to these non-conventional epitopes which in turn engage the immune system as T cell targets. In particular, where these modifications alter the rules of epitope engagement with MHC molecules, such non-conventional epitopes offer a persuasive explanation for associations between specific HLA alleles and autoimmune diseases...
August 10, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28761441/association-between-hla-dq-gene-polymorphisms-and-hbv-related-hepatocellular-carcinoma
#2
REVIEW
Jingzhu Lv, Tao Xu, Zhongqing Qian, Hongtao Wang
Hepatocellular carcinoma (HCC) is one of the most common causes of cancer-related mortality worldwide. Host gene variants may influence hepatitis B virus- (HBV-) related HCC. Human leukocyte antigens (HLA) play an important role in presenting virus antigens to immune cells that are responsible for the clearance of virus-infected cells and tumor cells. Previous studies have investigated the HLA-DQ (rs2856718 and rs9275572) polymorphisms that may be associated with the development of HBV-related HCC. However, the results are controversial or inconclusive...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28738753/genetic-predictors-of-celiac-disease-lactose-intolerance-and-vitamin-d-function-and-presence-of-peptide-morphins-in-urine-of-children-with-neurodevelopmental-disorders
#3
Katarina Bojović, Biljana Stanković, Nikola Kotur, Dijana Krstić-Milošević, Vladimir Gašić, Sonja Pavlović, Branka Zukić, Đurđica Ignjatović
Gastrointestinal disturbances, nutritional deficiencies, and food intolerances are frequently observed in children with neurodevelopmental disorders (NDD). To reveal possible association of celiac disease risk variants (HLA-DQ), lactose intolerance associated variant (LCT-13910C>T) as well as variant associated with vitamin D function (VDR FokI) with NDD, polymerase chain reaction-based methodology was used. Additionally, intestinal peptide permeability was estimated in NDD patients and healthy children by measuring the level of peptides in urine using high-performance liquid chromatography...
July 24, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28717935/rabbit-anti-human-thymocyte-immunoglobulin-for-the-rescue-treatment-of-chronic-antibody-mediated-rejection-after-pediatric-kidney-transplantation
#4
Yasemen Cihan, Nele Kanzelmeyer, Jens Drube, Martin Kreuzer, Christian Lerch, Imke Hennies, Kerstin Froede, Murielle Verboom, Thurid Ahlenstiel-Grunow, Lars Pape
BACKGROUND: Chronic antibody-mediated rejection (cAMR) is the leading cause of late kidney graft loss, but current therapies are often ineffective. Rabbit anti-human thymocyte immunoglobulin (rATG) may be helpful, but its use is virtually undocumented. METHODS: Data were analyzed retrospectively from nine pediatric kidney transplant patients with cAMR were treated with rATG (1.5 mg/kg × 5 days) at our center after non-response to pulsed prednisolone, intravenous immunoglobulin, rituximab, and increased immunosuppressive intensity (including switching to belatacept in some cases), with or without bortezomib...
July 17, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28701370/twenty-year-progression-rate-to-clinical-onset-according-to-autoantibody-profile-age-and-hla-dq-genotype-in-a-registry-based-group-of-children-and-adults-with-a-first-degree-relative-with-type-1-diabetes
#5
Frans K Gorus, Eric V Balti, Anissa Messaaoui, Simke Demeester, Annelien Van Dalem, Olivier Costa, Harry Dorchy, Chantal Mathieu, Luc Van Gaal, Bart Keymeulen, Daniël G Pipeleers, Ilse Weets
OBJECTIVE: We investigated whether islet autoantibody profile, HLA-DQ genotype, and age influenced a 20-year progression to diabetes from first autoantibody positivity (autoAb(+)) in first-degree relatives of patients with type 1 diabetes. RESEARCH DESIGN AND METHODS: Persistently islet autoAb(+) siblings and offspring (n = 462) under 40 years of age were followed by the Belgian Diabetes Registry. AutoAbs against insulin (IAA), GAD (GADA), IA-2 antigen (IA-2A), and zinc transporter 8 (ZnT8A) were determined by radiobinding assay...
July 12, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28695286/the-roles-of-mhc-class-ii-genes-and-post-translational-modification-in-celiac-disease
#6
REVIEW
Ludvig M Sollid
Our increasing understanding of the etiology of celiac disease, previously considered a simple food hypersensitivity disorder caused by an immune response to cereal gluten proteins, challenges established concepts of autoimmunity. HLA is a chief genetic determinant, and certain HLA-DQ allotypes predispose to the disease by presenting posttranslationally modified (deamidated) gluten peptides to CD4(+) T cells. The deamidation of gluten peptides is mediated by transglutaminase 2. Strikingly, celiac disease patients generate highly disease-specific autoantibodies to the transglutaminase 2 enzyme...
August 2017: Immunogenetics
https://www.readbyqxmd.com/read/28661314/effect-of-single-sensitization-event-on-human-leukocyte-antigen-alloimmunization-in-kidney-transplant-candidates-a-single-center-experience
#7
Marianna Resse, Rossella Paolillo, Biagio Pellegrino Minucci, Dario Costa, Carmela Fiorito, Michele Santangelo, Paride De Rosa, Claudio Napoli
OBJECTIVES: Human leukocyte antigen alloimmunization is caused by exposure to HLA antigens through transfusion, pregnancy, or transplant. Our study objective was to present the rate of positivity of anti-HLA antibody considering the effects of a single sensitization event in kidney transplant candidates at our center. MATERIALS AND METHODS: Our study reviewed 606 kidney transplant candidates. Patient sera were analyzed using Luminex xMAP technology. Panel reactive antibody positivity rates and antibody strengths in patients were analyzed according to a single sensitization event...
June 28, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28658512/early-clearance-vs-persistence-of-de-novo-donor-specific-antibodies-following-lung-transplantation
#8
Ana K Islam, Neeraj Sinha, Jennifer M DeVos, Thomas S Kaleekal, Soma S Jyothula, Larry D Teeter, Duc T M Nguyen, Todd N Eagar, Linda W Moore, Mamta Puppala, Stephen T C Wong, Richard J Knight, Adaani E Frost, Edward A Graviss, A Osama Gaber
BACKGROUND: The natural history of de novo donor-specific antibodies (dnDSA) after lung transplantation is not well-described. We sought to determine the incidence and risk factors associated with dnDSA and compare outcomes between recipients with transient (or isolated) vs persistent dnDSA after transplantation. METHODS: A single-center review of all lung transplants from 1/2009-7/2013. DSAs were tested eight times in the first year and every 4 months thereafter...
June 28, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28640108/correlation-of-hla-dp-dq-polymorphisms-with-transplant-etiologies-and-prognosis-in-liver-transplant-recipients
#9
Yi Li, Qian Huang, Jiang-Tao Tang, Tian-Tian Wei, Lin Yan, Zhi-Qiang Yang, Yang-Juan Bai, Lan-Lan Wang, Yun-Ying Shi
Previous study has identified that the genetic variants in the human leukocyte antigen (HLA)-DP/DQ region were strongly associated with hepatitis B virus (HBV) infection. But their roles in liver function recovery after hepatic transplantation were still obscure. This study aimed to investigate whether HLA-DP/DQ polymorphisms were associated with post-transplant etiologies and prognosis in Chinese liver transplant recipients.A total of 144 liver transplant recipients were enrolled, which were divided into 2 groups according to the transplant etiology: HBV-related disease and non-HBV-related disease...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28638585/clinicopathological-study-of-seronegative-celiac-disease-in-adults-in-pakistan-a-pilot-study
#10
Mohammad Hanif Farina, Rajesh Kumar Mandhwani, Nasir Hassan Luck, Zaigham Abbas, Muhammed Mubarak, S Mudassir Laeeq, Abbas Ali Tasneem
BACKGROUND Celiac disease (CD) is usually missed, if the serology is negative. We aimed to evaluate the clinicopathological characteristics of seronegative CD (SNCD) and its response to gluten-free diet (GFD) in adult patients. METHODS This observational study was carried out at the Department of Hepatogastroenterology, Sindh Institute of Urology and Transplantation, Karachi, Pakistan from 2009 to 2015. All consecutive adult patients (≥17 years) with features of marked villous atrophy (Marsh class≥III) on duodenal biopsy, negative tissue transglutaminase IgA and IgG antibodies (anti-tTg IgA and IgG) and human leukocyte antigen (HLA) DQ2 or DQ8 serotypes were studied...
April 2017: Middle East Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28597555/harnessing-scientific-and-technological-advances-to-improve-equity-in-kidney-allocation-policies
#11
A R Tambur, B Audry, C Antoine, C Suberbielle, D Glotz, C Jacquelinet
We reported that current assignment of HLA-DQ is a barrier to organ allocation. Here we simulated the impact of incorporating HLA-DQ antigens and antibodies as A/B and αβ allelic variants, respectively, on calculated panel reactive antibody (cPRA) and probability of finding potential compatible donors (PCD). A cohort of 1224 donors and 2075 sensitized candidates was analyzed using HLA-DQαβ allelic (study) versus serologic (current practice) nomenclature. A significant (p < 10(-4) ) decrease in cPRA was observed with higher impact for male versus female, and first transplant versus retransplant (p < 10(-4) ), affecting mostly patients with moderate cPRA (30-80%)...
June 8, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28596278/hla-drb1-07-01-hla-dqa1-02-01-hla-dqb1-02-02-haplotype-is-associated-with-a-high-risk-of-asparaginase-hypersensitivity-in-acute-lymphoblastic-leukemia
#12
Nóra Kutszegi, Xiaoqin Yang, András Gézsi, Géza Schermann, Dániel J Erdélyi, Ágnes F Semsei, Krisztina M Gábor, Judit C Sági, Gábor T Kovács, András Falus, Hongyun Zhang, Csaba Szalai
Hypersensitivity reactions are the most frequent dose-limiting adverse reactions to Escherichia coli-derived asparaginase in pediatric acute lymphoblastic leukemia patients. The aim of the present study was to identify associations between sequence-based Human Leukocyte Antigen Class II region alleles and asparaginase hypersensitivity in a Hungarian acute lymphoblastic leukemia population. Four-digit typing of HLA-DRB1 and HLA-DQB1 loci was performed in 359 pediatric acute lymphoblastic leukemia patients by using next-generation sequencing method...
June 8, 2017: Haematologica
https://www.readbyqxmd.com/read/28589338/the-identification-of-celiac-disease-in-asymptomatic-children-the-generation-r-study
#13
Michelle Jansen, Menno van Zelm, Michael Groeneweg, Vincent Jaddoe, Willem Dik, Marco Schreurs, Herbert Hooijkaas, Henriette Moll, Johanna Escher
BACKGROUND: The objective of our study was to assess whether TG2A levels in the healthy childhood population can be predictive of subclinical CD. METHODS: A total of 4442 children (median age, 6.0 years) participating in a population-based prospective cohort study were screened on serum TG2A. Those with positive TG2A (≥7 U/ml; n = 60, 1.4%) were invited for clinical evaluation (median age, 9.0 years). Medical history, physical examination, serum TG2A, and IgA-endomysium (EMA) were assessed, as well as HLA DQ 2...
June 6, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28512640/relationship-between-hla-dq-gene-polymorphism-and-hepatitis-b-virus-infection
#14
Tao Xu, Meiqun Sun, Hongtao Wang
Hepatitis B virus (HBV) infection is the predominant risk factor for chronic hepatitis B (CHB). The association between HBV infection and human leukocyte antigen- (HLA-) DQ polymorphism (rs2856718 and rs7453920) has been demonstrated in other studies; however, the results were controversial or inconclusive. Therefore, to derive a more precise estimation of the association, a meta-analysis was performed. Crude odds ratios (ORs) and their 95% confidence intervals (CIs) were used to assess the strength of association between HLA-DQ polymorphism (rs2856718 and rs7453920) and HBV infection risk...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28456719/abnormalities-in-cd57-cytotoxic-t-cells-and-v%C3%AE-1-%C3%AE-%C3%AE-t-cells-in-subclinical-celiac-disease-in-childhood-are-affected-by-cytomegalovirus-the-generation-r-study
#15
M A E Jansen, D van den Heuvel, V W V Jaddoe, M C van Zelm, H A Moll
Celiac disease (CD) is a digestive and autoimmune disorder driven by an immune response to modified gluten peptides. Affected intestines show infiltrates of various T-cell and NK-cell subsets. It is currently unclear if individuals with subclinical CD have systemic abnormalities in immune cells. We here studied whether subclinical CD is associated with changes in blood CD57-expressing and Vδ1-expressing lymphocytes in children, and whether cytomegalovirus (CMV) infection modifies this association. Included were 1068 children from the Generation R Study...
April 26, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28388722/thyroid-and-islet-autoantibodies-predict-autoimmune-thyroid-disease-at-type-1-diabetes-diagnosis
#16
Berglind Jonsdottir, Christer Larsson, Annelie Carlsson, Gun Forsander, Sten Anders Ivarsson, Åke Lernmark, Johnny Ludvigsson, Claude Marcus, Ulf Samuelsson, Eva Örtqvist, Helena Elding Larsson
Context: Screening of autoimmune thyroid disease in children with type 1 diabetes is important but varies between clinics. Objective: To determine the predictive value of thyroid autoantibodies, thyroid function, islet autoantibodies, and HLA-DQ at diagnosis of type 1 diabetes for autoimmune thyroid disease during follow-up. Setting: Forty-three Swedish pediatric endocrinology units. Design, Patients, and Main Outcome Measures: At diagnosis of type 1 diabetes, autoantibodies against thyroid peroxidase (TPOAb), thyroglobulin (TGAb), glutamic acid decarboxylase (GADA), insulin, insulinoma-associated protein-2, and 3 variants of zinc transporter 8 (ZnT8W/R/QA) HLA-DQA1-B1 genotypes and thyroid function were analyzed in 2433 children...
April 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28385185/antibody-responses-to-botulinum-neurotoxin-type-a-of-toxin-treated-spastic-equinus-children-with-cerebral-palsy-a-randomized-clinical-trial-comparing-two-injection-schedules
#17
Minako Oshima, Philip Deitiker, Tandy Hastings-Ison, K Roger Aoki, H Kerr Graham, M Zouhair Atassi
We have conducted a 26-month-long comparative study involving young patients (2-6years old) with a clinical diagnosis of spastic equinus secondary to cerebral palsy who have been treated with BoNT/A (BOTOX®, Allergan) tri-annually or annually. Serum samples were obtained to determine the presence or absence of blocking antibodies (Abs) by a mouse protection assay (MPA) and levels of anti-BoNT/A Abs by radioimmune assay (RIA). HLA DQ alleles were typed using blood samples to determine the possible association of certain HLA type(s) with the disease or with the Ab status...
May 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28340805/association-between-hla-antibodies-and-different-sensitization-events-in-renal-transplant-candidates
#18
S U Akgul, H S Ciftci, S Temurhan, Y Caliskan, A Bayraktar, T Tefik, I A Kaya, I O Canitez, E Demir, H Yazici, H Bakkaloglu, A E Aydin, A Turkmen, I Nane, F Aydin, F S Oguz
BACKGROUND: Human leukocyte antigen (HLA) allo-immunization is caused by various events such as blood transfusions, pregnancies, or organ transplantations, which can lead to sensitization. In this retrospective study, we evaluated different sensitization models and their effects on panel-reactive antibody (PRA) profiles of renal transplantation candidates. METHODS: Anti-HLA class I/II antibody screening tests were performed in 906 renal transplantation candidates with the use of a microbead-based assay (Luminex)...
April 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28331856/the-immunogenicity-of-hla-class-ii-mismatches-the-predicted-presentation-of-nonself-allo-hla-derived-peptide-by-the-hla-dr-phenotype-of-the-recipient-is-associated-with-the-formation-of-dsa
#19
Vadim Jucaud
The identification of permissible HLA class II mismatches can prevent DSA in mismatched transplantation. The HLA-DR phenotype of recipients contributes to DSA formation by presenting allo-HLA-derived peptides to T-helper cells, which induces the differentiation of B cells into plasma cells. Comparing the binding affinity of self and nonself allo-HLA-derived peptides for recipients' HLA class II antigens may distinguish immunogenic HLA mismatches from nonimmunogenic ones. The binding affinities of allo-HLA-derived peptides to recipients' HLA-DR and HLA-DQ antigens were predicted using the NetMHCIIpan 3...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28286782/computational-approaches-to-facilitate-epitope-based-hla-matching-in-solid-organ-transplantation
#20
COMPARATIVE STUDY
Kirsten Geneugelijk, Jeroen Wissing, Dirk Koppenaal, Matthias Niemann, Eric Spierings
Epitope-based HLA matching has been emerged over the last few years as an improved method for HLA matching in solid organ transplantation. The epitope-based matching concept has been incorporated in both the PIRCHE-II and the HLAMatchmaker algorithm to find the most suitable donor for a recipient. For these algorithms, high-resolution HLA genotype data of both donor and recipient is required. Since high-resolution HLA genotype data is often not available, we developed a computational method which allows epitope-based HLA matching from serological split level HLA typing relying on HLA haplotype frequencies...
2017: Journal of Immunology Research
keyword
keyword
26556
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"