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Antibodies HLA

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https://www.readbyqxmd.com/read/28719653/isolation-of-a-monoclonal-antibody-from-a-phage-display-library-binding-the-rhesus-macaque-mhc-class-i-allomorph-mamu-a1-001
#1
Nathan Holman, Jason T Weinfurter, Trevor R Harsla, Roger W Wiseman, Aaron J Belli, Anthony J Michaels, Keith A Reimann, Robert I DeMars, Matthew R Reynolds
Monoclonal antibodies that bind to human leukocyte antigen (HLA) are useful tools for HLA-typing, tracking donor-recipient chimerisms after bone marrow transplants, and characterizing specific major histocompatibility complexes (MHC) on cell surfaces. Unfortunately, equivalent reagents are not available for rhesus macaques, which are commonly used animal as models in organ transplant and infectious disease research. To address this deficiency, we isolated an antibody that recognizes the common Indian rhesus macaque MHC class I molecule, Mamu-A1*001...
2017: PloS One
https://www.readbyqxmd.com/read/28717935/rabbit-anti-human-thymocyte-immunoglobulin-for-the-rescue-treatment-of-chronic-antibody-mediated-rejection-after-pediatric-kidney-transplantation
#2
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/28711882/hla-drb1-alleles-as-genetic-risk-factors-for-the-development-of-anti-mda5-antibodies-in-patients-with-dermatomyositis
#3
Zhiyong Chen, Yan Wang, Masataka Kuwana, Xue Xu, Wei Hu, Xuebing Feng, Hong Wang, Akinori Kimura, Lingyun Sun
OBJECTIVE: Patients with polymyositis/dermatomyositis (PM/DM) who express anti-melanoma differentiation associated protein 5 (anti-MDA5) antibodies frequently present with interstitial lung disease (ILD). The aim of this study was to investigate the association of HLA-DRB1 with anti-MDA5 expression in PM/DM. METHODS: The frequency of DRB1 alleles was compared among 70 patients with PM, 104 patients with DM, and 400 healthy controls in a Han Chinese population. RESULTS: Frequencies of DRB1*04:01 [17...
July 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28709842/what-compatibility-in-2017-for-the-haematopoietic-stem-cell-transplantation
#4
X Lafarge
The diversification of potential donors to perform stem cell allografts now enables to propose a compatible graft cell source adapted to the different clinical situations. Transplants with a geno-identical sibling donor, otherwise with the most HLA-compatible unrelated donor, remain the first-line solutions. Alternative transplants allow to graft patients having no donors in international registries, owing to the rarity of their HLA typing. They are carried out with fairly incompatible grafts and are therefore limited by the existence in the recipient of preformed anti-HLA antibodies which predispose to their rejection...
July 11, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28709446/omitting-duodenal-biopsy-in-children-with-suspected-celiac-disease-and-extra-intestinal-symptoms
#5
Mauro Bozzola, Cristina Meazza, Chiara Gertosio, Sara Pagani, Daniela Larizza, Valeria Calcaterra, Ombretta Luinetti, Giovanni Farello, Carmine Tinelli, Lorenzo Iughetti
BACKGROUND: The aim of our study is to evaluate if in children with highly positive serology and HLA-DQ2/DQ8 (triple test, TT) and only extra-intestinal symptoms, it is possible to omit performing an intestinal biopsy for celiac disease (CD) diagnosis, as suggested by the new European Society for Pediatric Gastroenterology, Hepatology and Nutrition ESPGHAN guidelines. METHODS: In this retrospective study a total of 105 patients, suspected of having CD because of extra-intestinal symptoms and showing serum tissue transglutaminase antibody (anti-tTG) and anti-endomysial antibody (EMA) measurements and HLA genotyping, were considered for the final analysis (33 boys and 72 girls; age range 1...
July 15, 2017: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/28708862/anti-citrullinated-protein-antibody-positive-rheumatoid-arthritis-is-primarily-determined-by-rheumatoid-factor-titre-and-the-shared-epitope-rather-than-smoking-per-se
#6
Dan Murphy, Derek Mattey, David Hutchinson
OBJECTIVE: To analyse the relationship between rheumatoid factor (RF) titre, smoking and HLA-DRB1 alleles coding a "shared epitope" (SE) in relation to anti-citrullinated protein antibody (ACPA) positivity in rheumatoid arthritis (RA). METHODS: RA patients (n = 658) attending rheumatology clinics in Cornwall, UK (cohort 1) were stratified according to RF and ACPA titre, and smoking pack years at diagnosis. A further 409 RA patients from North Staffordshire, UK (cohort 2) were studied to confirm the relationship between RF levels, smoking and ACPA positivity in relation to SE status...
2017: PloS One
https://www.readbyqxmd.com/read/28708813/application-and-interpretation-of-histocompatibility-data-in-liver-transplantation
#7
Russell N Wesson, Eric W Etchill, Jacqueline Garonzik-Wang
PURPOSE OF REVIEW: There has been a resurgence of interest in histocompatibility as it applies to liver transplantation. The association of persistent and de-novo donor specific antibody (DSA) and outcomes after liver transplantation continues to be investigated. RECENT FINDINGS: Consensus continues to evolve regarding the existence of acute and chronic antibody-mediated rejection (AMR) and pathogenicity of DSA and associated pathologic findings after liver transplantation...
July 13, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28708086/celiac-disease-presenting-with-peripheral-neuropathy-in-children-a-case-report
#8
Alessandra Pacitto, Alessandra Paglino, Lorenza Di Genova, Alberto Leonardi, Edoardo Farinelli, Nicola Principi, Giuseppe di Cara, Susanna Esposito
Background: Clinically relevant neurological manifestations in children with celiac disease (CD) are unusual, especially when they are considered as signs of the onset of the disease. In this paper, a case of Guillain-Barrè syndrome (GBS) as the first manifestation of CD in a 23-month-old child is reported. Case presentation: We describe a case of CD onset with peripheral neuropathy in a 23-month-old Bulgarian boy presenting with a sudden refusal to walk and absence of deep tendon reflexes in both lower limbs...
July 14, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28707765/tissue-microarray-methodology-identifies-complement-pathway-activation-and-dysregulation-in-progressive-multiple-sclerosis
#9
Sam Loveless, James W Neal, Owain W Howell, Katharine E Harding, Patrick Sarkies, Rhian Evans, Ryan J Bevan, Svetlana Hakobyan, Claire L Harris, Neil P Robertson, B Paul Morgan
BACKGROUND: The complement pathway has potential contributions to both white (WM) and grey matter (GM) pathology in Multiple Sclerosis (MS). A quantitative assessment of complement involvement is lacking. OBJECTIVE: Tissue MicroArray methodology was used in conjunction with immunohistochemistry to investigate the localization of complement pathway proteins in progressive MS cortical GM and subcortical WM. METHODS: Antibodies targeting complement proteins C1q, C3b, regulatory proteins C1 inhibitor (C1INH), complement receptor 1 (CR1), clusterin, factor H (FH) and the C5a anaphylatoxin receptor (C5aR) were utilised alongside standard markers of tissue pathology...
July 14, 2017: Brain Pathology
https://www.readbyqxmd.com/read/28706984/the-uk-national-registry-of-abo-and-hla-antibody-incompatible-renal-transplantation-pretransplant-factors-associated-with-outcome-in-879-transplants
#10
Laura Pankhurst, Alex Hudson, Lisa Mumford, Michelle Willicombe, Jack Galliford, Olivia Shaw, Raj Thuraisingham, Carmelo Puliatti, David Talbot, Sian Griffin, Nicholas Torpey, Simon Ball, Brendan Clark, David Briggs, Susan V Fuggle, Robert M Higgins
BACKGROUND: ABO and HLA antibody incompatible (HLAi) renal transplants (AIT) now comprise around 10% of living donor kidney transplants. However, the relationship between pretransplant factors and medium-term outcomes are not fully understood, especially in relation to factors that may vary between centers. METHODS: The comprehensive national registry of AIT in the United Kingdom was investigated to describe the donor, recipient and transplant characteristics of AIT...
July 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28705838/leukofiltration-plus-pathogen-reduction-prevents-alloimmune-platelet-refractoriness-in-a-dog-transfusion-model
#11
Sherrill J Slichter, Esther Pellham, S Lawrence Bailey, Todd Christoffel, Irena Gettinger, Lakshmi Gaur, Yvette Latchman, Karen Nelson, Doug Bolgiano
Human Lymphocyte Antigen (HLA) alloimmunization to filter leukoreduced (F-LR) platelets occurs in about 18% of immunosuppressed thrombocytopenic hematology/oncology patients and represents a significant challenge for effective chemotherapy. In a dog platelet transfusion model, we have evaluated other methods of preventing alloimmune platelet refractoriness and demonstrated that successful methods in our dog model are transferable to man. In the present study, donor/recipient pairs were dog lymphocyte antigen (DLA) DR-B incompatible (88% of the pairs), and recipient dogs received up to 8 weekly treated transfusions from a single donor (a highly immunogenic stimulus), or until platelet refractoriness...
July 13, 2017: Blood
https://www.readbyqxmd.com/read/28701473/zbtb7a-induction-in-alveolar-macrophages-is-implicated-in-anti-hla-mediated-lung-allograft-rejection
#12
Deepak K Nayak, Fangyu Zhou, Min Xu, Jing Huang, Moriya Tsuji, Jinsheng Yu, Ramsey Hachem, Andrew E Gelman, Ross M Bremner, Michael A Smith, Thalachallour Mohanakumar
Chronic rejection significantly limits long-term success of solid organ transplantation. De novo donor-specific antibodies (DSAs) to mismatched donor human leukocyte antigen after human lung transplantation predispose lung grafts to chronic rejection. We sought to delineate mediators and mechanisms of DSA pathogenesis and to define early inflammatory events that trigger chronic rejection in lung transplant recipients and obliterative airway disease, a correlate of human chronic rejection, in mouse. Induction of transcription factor zinc finger and BTB domain containing protein 7a (Zbtb7a) was an early response critical in the DSA-induced chronic rejection...
July 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28695293/hla-class-ii-and-rheumatoid-arthritis-the-bumpy-road-of-revelation
#13
REVIEW
Arieke S B Kampstra, René E M Toes
Rheumatoid arthritis (RA) is a chronic auto-immune disease primarily targeting the joints. Approximately 1% of the population is affected by RA, and despite the improvements in therapeutic interventions, elucidation of the disease pathogenesis is still in its infancy. RA patients can be subdivided on basis of the presence of autoantibodies, especially anti-citrullinated protein antibodies (ACPA). ACPA(+) and ACPA(-) disease most likely differ in aetiology, as different genetic and environmental risk factors are associated with these two disease entities...
July 11, 2017: Immunogenetics
https://www.readbyqxmd.com/read/28691459/periodontal-microbioma-and-rheumatoid-arthritis-the-role-of-porhyromonas-gingivalis
#14
L Azzi, S Rania, R Vinci, F Spadari, F Croveri, C Scognamiglio, D Farronato, L Tettamanti, A Tagliabue, J Silvestre-Rangil, C Bellintani
Rheumatoid Arthritis is a disease, which can be described as an autoimmune response after molecular mimicry caused by infective agents. The current study aims at evaluating the correlation between Rhematoid Arthritis (RA) and Periodontal Disease (PD), with special attention to the microbioma detected in the gums. Thirty-four patients with RD were recruited into the current study. Among rheumatic parameters, Rheumatoid Factor (RF), anti-citrullinated protein antibody (CCP), HLA-BDR1 and DAS28 were collected...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28691456/genetic-correlation-between-rheumatoid-arthritis-and-periodontal-disease-the-role-of-sex-and-il-10
#15
L Azzi, S Rania, F Spadari, R Vinci, M Manfredini, F Croveri, A Boggio, L Tettamanti, A Tagliabue, J Silvestre-Rangil, C Bellintani
The chronic stimulation of the immune system due to the presence of bacterial antigens within periodontal tissues has been associated with several autoimmune diseases, like diabetes mellitus, infective endocarditis or cardiovascular atherosclerosis. The current study aims at evaluating the correlation between Rheumatoid Arthritis (RA) and Periodontal Disease (PD) with special attention to genetic polymorphisms in cytokine expression. A total number of 34 patients affected by RA were recruited. Each of them underwent haematochemical analysis and data were collected for Rheumatoid Factor (RF), Anti-Citrullinated Protein’s Antibody (CCP) and HLA-BDR1...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28691368/epitopes-and-motifs-of-the-hla-b-14-allele-family-products-and-related-hla-b14-cross-reactive-specificities
#16
J Street, C Darke
The split specificities of HLA-B14 (B64, B65) are assigned to the B*14:01 (B64) and B*14:02 (B65) products only. Of the further 50 B*14 expressed products, only B*14:03 and B*14:06 are officially designated as HLA-B14. The B*14:08 product differs from B64 by a single amino acid substitution of W97R, while the B*14:53 specificity (which is a "short" B14 and neither B64 nor B65) differs from B64 by three residues (W97S, Y113H and F116Y). Comprehensive testing of B*14:08:01 cells (using 49 alloantisera with B64 or B64, B65 specificities, and five monoclonal antibodies with B65 or B64, B65 activity) showed that the B*14:08 specificity is, like the B*14:53 product, neither B64 nor B65 and appears as a "short" B14 specificity...
July 10, 2017: International Journal of Immunogenetics
https://www.readbyqxmd.com/read/28687275/avoidance-of-cow-s-milk-based-formula-for-at-risk-infants-does-not-reduce-development-of-celiac-disease-a-randomized-controlled-trial
#17
Mila Hyytinen, Erkki Savilahti, Suvi M Virtanen, Taina Härkönen, Jorma Ilonen, Kristiina Luopajärvi, Raivo Uibo, Outi Vaarala, Hans K Åkerblom, Mikael Knip
BACKGROUND & AIMS: Feeding during first months of life might affect risk of celiac disease. Individuals with celiac disease or type 1 diabetes have been reported to have high titers of antibodies against cow´s milk proteins. Avoidance of cow's milk-based formula for infants with genetic susceptibility for type 1 diabetes reduced the cumulative incidence of diabetes-associated autoantibodies. We performed a randomized controlled trial, in the same population, to study whether weaning to an extensively hydrolyzed formula reduced the risk of celiac disease autoimmunity or celiac disease...
July 4, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28687069/%C3%AE-%C3%AE-tfh-cells-promote-b-cell-maturation-and-antibody-production-in-neuroblastoma
#18
Wenjun Mou, Wei Han, Xiaoli Ma, Xiaolin Wang, Hong Qin, Wen Zhao, Xiaoya Ren, Xi Chen, Wei Yang, Haiyan Cheng, Xisi Wang, Hui Zhang, Xin Ni, Huanmin Wang, Jingang Gui
BACKGROUND: Previous studies have shown that γδ TFH cells are capable of modulating antibody production in immunized and infected mouse model. In recent studies, human γδ TFH cells are shown to contribute to the activation of humoral immunity and promote the maturation of B cells. However, little information is available on their involvement in neuroblastoma (NB) pathogenesis. RESULTS: In the present study, the frequency of γδ TFH cells in 74 NB patients was significantly higher compared with that in 60 healthy controls...
July 7, 2017: BMC Immunology
https://www.readbyqxmd.com/read/28686909/unraveling-the-role-of-maternal-anti-hla-class-i-antibodies-in-fetal-and-neonatal-thrombocytopenia-antibody-specificity-analysis-using-epitope-data
#19
Jesper Dahl, Erle Refsum, Maria Therese Ahlen, Torstein Egeland, Tore Jensen, Marte K Viken, Tor Brynjar Stuge, Ganesh Acharya, Anne Husebekk, Bjørn Skogen, Heidi Tiller
Anti-HLA class I antibodies have been suggested as a possible cause of fetal and neonatal alloimmune thrombocytopenia (FNAIT). The aim of this study was to characterize maternal anti-HLA class I alloantibodies in suspected cases of FNAIT. The study population consisted of all nationwide referrals of neonates with suspected FNAIT to the National Unit for Platelet Immunology in Tromsø, Norway, during 1998-2009 (cases), and 250 unselected pregnancies originally included in a prospective study (controls). Inclusion criterion was a positive screening for maternal anti-HLA class I antibodies...
June 27, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28686316/is-pre-transplant-sensitization-against-angiotensin-ii-type1-receptor-still-a-risk-factor-of-graft-and-patient-outcome-in-kidney-transplantation-in-the-anti-hla-luminex-era
#20
C Deltombe, F Gillaizeau, D Anglicheau, E Morelon, K Trébern-Launay, F Le Borgne, M Rimbert, P Guérif, S Malard-Castagnet, Y Foucher, M Giral
AIMS: We aimed to assess the correlation of anti-angiotensin II type 1 receptor antibodies (anti-AT1R-Abs) before transplantation on a multicentric cohort of kidney transplant recipients (2008-2012), under Tacrolimus and Mycofenolate mofetil (MMF), screened by Luminex technology for anti -HLA immunization. METHODS: Anti-AT1R-antibody levels were measured by ELISA in pre-transplantation sera of 940 kidney recipients from 3 French centers of the DIVAT cohort. Multivariable Cox models estimated the association between pre-transplant anti-angiotensin II type 1 receptor antibodies and time to acute rejection episodes (ARE) or time to graft failure...
July 7, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
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