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anti hla antibodies

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https://www.readbyqxmd.com/read/28224137/hmgb1-anti-hmgb1-antibodies-define-a-molecular-signature-of-early-stages-of-hiv-associated-neurocognitive-isorders-hand
#1
Marie-Lise Gougeon, Béatrice Poirier-Beaudouin, Jacques Durant, Christine Lebrun-Frenay, Héla Saïdi, Valérie Seffer, Michel Ticchioni, Stephane Chanalet, Helene Carsenti, Alexandra Harvey-Langton, Muriel Laffon, Jacqueline Cottalorda, Christian Pradier, Pierre Dellamonica, Matteo Vassallo
BACKGROUND: HIV-associated neurocognitive disorders (HAND) persist in the post-HAART era, characterized by asymptomatic neurocognitive impairment (ANI) and mild neurocognitive disorders (MND). High mobility group box 1 (HMGB1) is a non-histone chromosomal protein widely expressed in the nucleus of all eukaryotic cells, including brain cells, which acts as a potent proinflammatory cytokine when actively secreted from immune cells. Recent reports suggested that HMGB1 acts on microglial cells to promote neuroinflammation...
February 2017: Heliyon
https://www.readbyqxmd.com/read/28220766/immunological-biomarkers-and-long-term-graft-survival-prospective-follow-up-of-457-kidney-transplant-recipients
#2
Michał Ciszek, Krzysztof Mucha, Bartosz Foroncewicz, Dorota Żochowska, Maciej Kosieradzki, Tadeusz Grochowiecki, Magdalena Durlik, Andrzej Górski, Leszek Pączek
INTRODUCTION    Antibodies against donor`s human leukocyte antigens (HLA) play a significant role in the pathogenesis of antibody mediated rejection, although their role during the late post-transplant period is unknown. A non-HLA polymorphic antigenic system like major histocompatibility class I chain-related antigen A (MICA) might be another target for antibody responses involved in rejection. OBJECTIVES    We conducted a 7-year prospective study to determine the effect of positivity for anti-HLA and anti-MICA antibodies on kidney graft survival...
February 15, 2017: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/28218752/the-hla-conundrum-in-bone-marrow-transplantation-correct-interpretation-of-anti-hla-antibodies-in-haploidentical-donor-selection
#3
A L Dias, S Hashmi, W Hogan, N Baig, L Wakefield, J Kreuter, M J Gandhi
No abstract text is available yet for this article.
February 20, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28211192/racial-differences-in-incident-de-novo-donor-specific-anti-hla-antibody-among-primary-renal-allograft-recipients
#4
Matthew J Everly, Kimberly P Briley, Carl E Haisch, Georg Dieplinger, Paul Bolin, Scott A Kendrick, Claire Morgan, Angela Q Maldonado, Lorita M Rebellato
Controversy exists as to whether African American (AA) transplant recipients are at risk for developing de novo donor-specific anti-human leukocyte antigen (HLA) antibody (dnDSA). We studied 341 HLA-mismatched, primary renal allograft recipients who were consecutively transplanted between 3/1999 and 12/2010. Sera were collected sequentially pre- and post-transplant and tested for anti-HLA immunoglobulin G (IgG) via single antigen bead assay. Of the 341 transplant patients (225 AA and 116 non-AA), 107 developed dnDSA at a median of 9...
February 17, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28199785/assessment-of-tocilizumab-anti-il-6-receptor-monoclonal-as-a-potential-treatment-for-chronic-antibody-mediated-rejection-and-transplant-glomerulopathy-in-hla-sensitized-renal-allograft-recipients
#5
Jua Choi, Olivier Aubert, Ashley Vo, Alexandre Loupy, Mark Haas, Dechu Puliyanda, Irene Kim, Sabrina Louie, Alexis Kang, Alice Peng, Joe Kahwaji, Nancy Reinsmoen, Mieko Toyoda, Stanley C Jordan
Extending the functional integrity of renal allografts is the primary goal of transplant medicine. Development of donor-specific antibodies (DSAs) post-transplant leads to chronic active antibody-mediated rejection (cABMR) and transplant glomerulopathy (TG), resulting in the majority of graft losses in the U.S. This reduces the quality & length of life for patients and increases cost. There are no approved treatments for cABMR. Evidence suggests the pro-inflammatory cytokine interleukin 6 (IL-6) may play an important role in DSA generation and cABMR...
February 15, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28199784/allosensitization-following-bone-graft
#6
Eoin D O'Sullivan, Richard K Battle, Sharon Zahra, John F Keating, Lorna P Marson, David M Turner
It is recognised that patients may become sensitized to donor-specific HLA antigens as a result of previous antigenic exposures, classically through previous transplantation, pregnancy or blood transfusion. We present an unusual case of a patient who unexpectedly developed a range of anti-HLA antibodies following orthopaedic surgery where a bone graft was deployed intraoperatively. We describe the case of a 52-year-old male awaiting a renal transplantation, undergoing elective orthopaedic surgery requiring a small volume bone graft...
February 15, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28194913/vaccination-against-t-cell-epitopes-of-native-apob100-reduces-vascular-inflammation-and-disease-in-a-humanized-mouse-model-of-atherosclerosis
#7
A Gisterå, A Hermansson, D Strodthoff, M L Klement, U Hedin, G N Fredrikson, J Nilsson, G K Hansson, D F J Ketelhuth
BACKGROUND AND OBJECTIVES: The T-cell response to low-density lipoprotein (LDL) in the vessel wall plays a critical role in atherosclerotic plaque formation and stability. In this study, we used a new translational approach to investigate epitopes from human apolipoprotein B100 (ApoB100), the protein component of LDL, which triggers T-cell activation. We also evaluated the potential of two selected native ApoB100 epitopes to modulate atherosclerosis in human ApoB100-transgenic Ldlr(-/-) (HuBL) mice...
February 13, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28191005/significance-of-anti-hla-antibodies-on-adult-and-pediatric-heart-allograft-outcomes
#8
REVIEW
Massimo Mangiola, Marilyn Marrari, Brian Feingold, Adriana Zeevi
As methods for human leukocyte antigens (HLA) antibody detection have evolved and newer solid phase assays are much more sensitive, the last 15 years has seen a renewed focus on the importance of HLA antibodies in solid organ transplant rejection. However, there is still much controversy regarding the clinical significance of antibody level as depicted by the mean fluorescence intensity of a patient's neat serum. Emerging techniques, including those that identify antibody level and function, show promise for the detection of individuals at risk of allograft rejection, determination of the effectiveness of desensitization prior to transplant, and for monitoring treatment of rejection...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28186642/higher-calcineurin-inhibitor-levels-predict-better-kidney-graft-survival-in-patients-with-de-novo-donor-specific-anti-hla-antibodies-a-cohort-study
#9
Marc-Antoine Béland, Isabelle Lapointe, Réal Noël, Isabelle Côté, Eric Wagner, Julie Riopel, Eva Latulippe, Olivier Désy, Stéphanie Béland, Ciara N Magee, Isabelle Houde, Sacha A De Serres
The development of de novo anti-HLA donor specific antibodies (dnDSA) is associated with poorer outcomes in kidney transplant recipients. Despite this, antibody screening post-transplant is not widespread, largely because the optimal management of patients with dnDSA remains undetermined. We hypothesized that in this population, calcineurin inhibitor blood levels would be an independent predictor of graft loss. We analyzed a cohort of unsensitized patients for whom anti-HLA antibody screening was performed prospectively post-transplant...
February 10, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28186591/-application-of-recombinant-gp%C3%A2-a-combined-luminex-beads-for-the-detection-of-hpa-1a-antibody
#10
Sudan Tao, Ying Liu, Yanming He, Yanling Ying, Ji He, Faming Zhu
OBJECTIVE: To generate recombinant GPⅢa as an alternative source for HPA-1a antigen and combine it with Luminex xMAP beads for the detection of HPA-1a-specific alloantibody. METHODS: The full coding region of ITGB3 gene was amplified and ligated with pcDNA3.1. The recombinant plasmid was transfected into CHO cells, and those with stable expression were screened with G418. Expressed protein was identified and coupled with Luminex xMAP beads, which were then reacted with sera samples...
February 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28182665/padi4-and-the-hla-drb1-shared-epitope-in-juvenile-idiopathic-arthritis
#11
Kaori Hisa, Masakatsu D Yanagimachi, Takuya Naruto, Takako Miyamae, Masako Kikuchi, Rhoki Hara, Tomoyuki Imagawa, Shumpei Yokota, Masaaki Mori
OBJECTIVE: Both genetic and environmental factors are associated with susceptibility to juvenile idiopathic arthritis (JIA). Many studies have reported that both a 'shared epitope' (SE) encoded by several HLA-DRB1 alleles and the peptidyl arginine deiminase type 4 (PADI4) gene polymorphisms are associated with susceptibility to rheumatoid arthritis (RA). However, it is uncertain whether JIA and RA share the latter genetic risk factor. Therefore, here we investigated relationships between HLA-SE and PADI4 polymorphisms with clinical subtypes of JIA...
2017: PloS One
https://www.readbyqxmd.com/read/28182308/mr-enterography-in-nonresponsive-adult-celiac-disease-correlation-with-endoscopic-pathologic-serologic-and-genetic-features
#12
Amir Reza Radmard, Amir Pejman Hashemi Taheri, Elham Salehian Nik, Soheil Kooraki, Shadi Kolahdoozan, Babak Mirminachi, Masoud Sotoudeh, Golnaz Ekhlasi, Reza Malekzadeh, Bijan Shahbazkhani
PURPOSE: To assess small bowel abnormalities on magnetic resonance enterography (MRE) in adult patients with nonresponsive celiac disease (CD) and investigate their associations with endoscopic, histopathologic, serologic, and genetic features. MATERIALS AND METHODS: This prospective study was carried out between September 2012 and August 2013. After approval by the Ethics Committee of our institution, informed consent was acquired from all participants. Forty consecutive patients with nonresponsive CD, aged 17-76 years, underwent MRE using a 1...
February 9, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28174139/positive-correlation-of-anti-herpes-simplex-type-i-virus-antibody-levels-with-pemphigus-vulgaris-disease-status-and-activity-in-a-large-patient-cohort
#13
Philip Senger, Nadia Abidi, Diana M Lin, Kristina Seiffert-Sinha, Animesh A Sinha
It is well accepted that pemphigus vulgaris (PV) is genetically linked to specific HLA class II subtypes. Environmental factors, including the role of herpes simplex virus (HSV1) in disease manifestation, have also been implicated, but in a limited number of patients and with inconsistent results. To clarify an association between HSV1 and PV in a large data set, including a stratification by dynamic and static clinical parameters, including disease activity, therapy status, HLA association, and gender. Serum HSV1 IgG levels from PV patients and healthy controls were measured by ELISA...
February 3, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28166393/donor-specific-antibodies-c1q-binding-improvement-in-kidney-graft-management
#14
Sylvie Ferrari-Lacraz
The diagnosis of acute antibody mediated rejection (ABMR) after kidney transplantation is based on three parameters: 1) decreased renal function, 2) histopathological signs of rejection, 3) presence of Donor Specific Antibody (DSA) [1]. Patient survival, as well as graft survival have improved since 5 to 10 years [2], thanks to several factors, including better management of patients, better immunosuppressive regimens, detection and avoidance of DSA. Although anti-HLA antibodies follow-up have improved ABMR management, its treatment remains challenging, and outcome may be worsened because of a delay in the diagnosis...
February 6, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28164503/association-of-hla-types-with-non-specific-binding-of-negative-control-beads-in-luminex-panel-reactive-antibody-pra-screening-assay
#15
Nuri Lee, Hee Sue Park, Ji Won In, Eun Youn Roh, Sue Shin, Kyoung Un Park, Eun Young Song
BACKGROUND: Luminex panel reactive antibody (PRA) screening assays using microbeads are widely used for organ transplantation. Anti-HLA serum reactivity is calculated by correcting for non-specific binding to the negative control (NC) beads. High mean fluorescence intensity (MFI) value of NC beads are observed in some patients and can result in false negative results in the PRA screening assay. We analyzed the clinical characteristics and HLA types of those patients with high MFI values of NC beads...
January 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28162159/-the-value-of-different-antibodies-detection-in-diagnosis-of-rheumatism-with-uveitis
#16
X F Xu, J Zhang, L Cui, Y H Wang, Y Yue, L Chi, J Bai, H M Li, X X Lu
Objective: To investigate the value of HLA-B27 antigen, antinuclear antibody (ANA), anti-dsDNA and Anti-Neutrophil Cytoplasmic Antibodies (ANCA) detection in diagnosis of rheumatism with uveitis. Methods: Seven hundred and twenty four newly diagnosed patients with non-infection uveitis in Beijing Tongren Hospital from March 2012 to March 2016 who long-term lived in Beijing and its surrounding areas were continuously enrolled. HLA-B27 antigen expressions in peripheral blood lymphocytes and ANA, anti-dsDNA and ANCA levels in serum were tested...
January 24, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28158255/improvement-in-the-definition-of-anti-hla-antibody-profile-in-highly-sensitized-patients
#17
Juan Irure, Esther Asensio, Emilio Rodrigo, Íñigo Romón, Javier Gómez, Manuel Arias, Marcos López-Hoyos, David San Segundo
The definition of anti-HLA antibody profile in highly sensitized patients on a waiting list is crucial when virtual crossmatch is used in organ allocation systems, but also when used to identify the true deleterious anti-HLA antibodies. Here we propose different levels of risk based on the results of anti-HLA antibody testing in neat serum (N) and after sera dilution (DIL) and C1q test in 18 highly sensitized patients. This group was heterogeneous in terms of anti-HLA antibody titers and their ability to fix complement...
2017: PloS One
https://www.readbyqxmd.com/read/28151807/the-impact-of-antibodies-and-virtual-crossmatching-on-intestinal-transplant-outcomes
#18
Elaine Y Cheng, Bernard J DuBray, Douglas G Farmer
PURPOSE OF REVIEW: Sensitization to human leukocyte antigens (HLAs) limits access to potential donors and contributes to inferior graft survival after transplantation. In this article, we will review the effects of HLA-specific antibodies on intestinal transplant outcomes, and discuss considerations in the monitoring and treatment of anti-HLA antibodies. RECENT FINDINGS: Only a handful of studies has investigated the effects of donor-specific anti-HLA antibodies (DSAs) on intestinal allograft outcomes...
February 1, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28151455/association-of-human-leukocyte-antigen-drb1-with-anti-cyclic-citrullinated-peptide-autoantibodies-in-saudi-patients-with-rheumatoid-arthritis
#19
Abdullah Alrogy, Abduallah Dirar, Waleed Alrogy, Hana Fakhoury, Ali Hajeer
BACKGROUND: The genetic association between human leukocyte antigen (HLA)-DRB1 alleles and the risk of development of autoantibodies has been investigated, but there are few studies from the Gulf region. OBJECTIVES: To investigate the association between the HLA-DRB1 shared epitope and the risk for development of autoantibodies in rheumatoid arthritis (RA) patients in a Saudi population. DESIGN: Analytical cross-sectional study. SETTING: Tertiary care hospital in Riyadh, Saudi Arabia...
January 2017: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/28151033/graft-immunocomplex-capture-fluorescence-analysis-to-detect-donor-specific-antibodies-and-hla-antigen-complexes-in-the-allograft
#20
Tsukasa Nakamura, Hidetaka Ushigome, Kiyoko Watabe, Yui Imanishi, Koji Masuda, Takehisa Matsuyama, Shumpei Harada, Katsuhiro Koshino, Taku Iida, Shuji Nobori, Norio Yoshimura
BACKGROUND: Immunocomplex capture fluorescence analysis (ICFA) is an attractive method to detect donor-specific anti-HLA antibodies (DSA) and HLA antigen complexes. Currently, antibody-mediated rejection (AMR) due to DSA is usually diagnosed by C4d deposition and serological DSA detection. Conversely, there is a discrepancy between these findings frequently. Thereupon, our graft ICFA technique may contribute to establish the diagnosis of AMR. METHODS: Graft samples were obtained by a percutaneous needle biopsy...
February 2, 2017: Immunological Investigations
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