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anti hla antibodies

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https://www.readbyqxmd.com/read/28339671/characteristics-of-donor-specific-anti-hla-antibodies-and-outcome-in-renal-transplant-patients-treated-with-a-standardized-induction-regimen
#1
Daniel Zecher, Christian Bach, Christoph Staudner, Carsten A Böger, Tobias Bergler, Bernhard Banas, Bernd M Spriewald
Background.: Pre-transplant donor-specific anti-human leukocyte antigen (HLA) antibodies (DSA) have been associated with antibody-mediated rejection (AMR) and early kidney allograft loss. Uncertainties remain regarding the general applicability of these findings and the optimal induction therapy in DSA-positive patients. Methods.: Pre-transplant sera from 174 patients receiving a crossmatch-negative kidney transplant were retrospectively analysed for DSA using Luminex technology...
February 18, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28337381/hla-e-inhibitor-enhances-the-killing-of-neuroblastoma-stem-cells-by-co-cultured-dendritic-cells-and-cytokine-induced-killer-cells-loaded-with-membrane-based-microparticles
#2
Zijun Zhen, Kaibin Yang, Litong Ye, Zhiyao You, Rirong Chen, Ying Liu, Youjian He
Neuroblastoma stem cells (NSCs) can cause drug resistance and tumor recurrence. This study aimed to enhance the lytic effect of dendritic cells (DCs) co-cultured with cytokine-induced killer (CIK) cells. NSCs were obtained by suspension culture, and DC-CIK cells were loaded with extracted NSC membrane-based microparticles (MMPs) before evaluating the lytic effect of DC-CIK cells on NSCs. After inhibiting the function or expression of human leukocyte antigen-E (HLA-E) in NSCs by anti-HLA-E monoclonal antibody or siRNA, the DC-CIK cell lytic effect on NSCs was re-assessed...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28336908/early-chimerism-after-liver-transplantation-reflects-the-clinical-course-of-recurrent-hepatitis-c
#3
Masashi Utsumi, Akinobu Takaki, Yuzo Umeda, Kazuko Koike, Stephanie C Napier, Nobukazu Watanabe, Susumu Shinoura, Ryuichi Yoshida, Daisuke Nobuoka, Tetsuya Yasunaka, Takahiro Oto, Motoo Araki, Kazuhide Yamamoto, Toshiyoshi Fujiwara, Takahito Yagi
BACKGROUND Human leukocyte antigen (HLA) mismatch is a characteristic feature of post-orthotopic liver transplantation (OLT) hepatitis C. To investigate the importance of donor HLA-restricted immune cells in post-OLT hepatitis C recurrence, we analyzed the frequency of donor chimerism and the clinical course of post-OLT hepatitis C. MATERIAL AND METHODS We analyzed peripheral blood chimerism in 11 HCV-reinfected patients with post-HLA mismatched OLT. Patients were divided into 2 groups: the OLT chronic hepatitis C (CHC) group (n=8), exhibiting active hepatitis C recurrence; and the OLT-persistently normal ALT (PNALT) group (n=3), without active hepatitis...
March 24, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28336519/anticollagen-type-ii-antibodies-are-associated-with-an-acute-onset-rheumatoid-arthritis-phenotype-and-prognosticate-lower-degree-of-inflammation-during-5%C3%A2-years-follow-up
#4
Vivek Anand Manivel, Mohammed Mullazehi, Leonid Padyukov, Helga Westerlind, Lars Klareskog, Lars Alfredsson, Saedis Saevarsdottir, Johan Rönnelid
OBJECTIVE: Antifibrillar collagen type II (anti-CII) antibody-positive patients with rheumatoid arthritis (RA) have early but not late signs of increased inflammation and joint erosions. We wanted to replicate this in a large RA cohort, and to relate to human leukocyte antigen (HLA)-DRB1* alleles. METHODS: Anti-CII and anti-cyclic citrullinated peptide (CCP)2 were measured at baseline in 773 patients with RA from the Swedish Epidemiological Investigation in Rheumatoid Arthritis (EIRA) study with clinical follow-up data from the Swedish Rheumatology Quality Register (SRQ) registry, and 1476 with HLA-DRB1* information...
March 23, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28331448/antibody-mediated-rejection-a-review
#5
Jorge Carlos Garces, Sixto Giusti, Catherine Staffeld-Coit, Humberto Bohorquez, Ari J Cohen, George E Loss
BACKGROUND: Chronic antibody injury is a serious threat to allograft outcomes and is therefore the center of active research. In the continuum of allograft rejection, the development of antibodies plays a critical role. In recent years, an increased recognition of molecular and histologic changes has provided a better understanding of antibody-mediated rejection (AMR), as well as potential therapeutic interventions. However, several pathways are still unknown, which accounts for the lack of efficacy of some of the currently available agents that are used to treat rejection...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28330741/intermediate-steroid-withdrawal-after-renal-transplantation-and-anti-hla-antibodies-hla-abs-development
#6
Elena Monfá, David San Segundo, Juan Carlos Ruiz San Millán, Judith Sanabria, Zoila Albines, Emilio Rodrigo, Iñigo Romón, Esther Asensio, Manuel Arias, Marcos López-Hoyos
INTRODUCTION: Steroid withdrawal in renal transplantation is desirable to avoid their adverse effects. However, by decreasing the immunosuppression, could lead to an increased risk for the development of HLA-Abs. OBJECTIVE: Evaluate the relationship between steroid withdrawal and development of HLA-Abs in renal transplantation. METHODS: We analyzed sera by Luminex from 182 kidney transplants performed from 1998 to 2011, before and two years after transplantation...
March 19, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28320591/minimal-association-of-alleles-of-human-leukocyte-antigen-class-ii-gene-and-long-term-antibody-response-to-hepatitis-b-vaccine-vaccinated-during-infancy
#7
Biyun Xu, Dongmei Zhu, Yongchun Bi, Yangyang Wang, Yali Hu, Yi-Hua Zhou
BACKGROUND: The human leukocyte antigen (HLA) system plays critical roles in regulating immune responses to various vaccines. This study aimed to evaluate the association of HLA class II gene polymorphisms and the long-term duration of anti-HBs response in children vaccinated against hepatitis B during infancy. METHODS: Totally 297 children 5-7years after the completion of primary vaccination against hepatitis B in infancy, without booster immunization or natural resolved infection, were enrolled...
March 17, 2017: Vaccine
https://www.readbyqxmd.com/read/28319051/tissue-specific-exosome-biomarkers-for-noninvasively-monitoring-immunologic-rejection-of-transplanted-tissue
#8
Prashanth Vallabhajosyula, Laxminarayana Korutla, Andreas Habertheuer, Ming Yu, Susan Rostami, Chao-Xing Yuan, Sanjana Reddy, Chengyang Liu, Varun Korutla, Brigitte Koeberlein, Jennifer Trofe-Clark, Michael R Rickels, Ali Naji
In transplantation, there is a critical need for noninvasive biomarker platforms for monitoring immunologic rejection. We hypothesized that transplanted tissues release donor-specific exosomes into recipient circulation and that the quantitation and profiling of donor intra-exosomal cargoes may constitute a biomarker platform for monitoring rejection. Here, we have tested this hypothesis in a human-into-mouse xenogeneic islet transplant model and validated the concept in clinical settings of islet and renal transplantation...
March 20, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28316465/chicken-egg-yolk-antibodies-igy-for-prophylaxis-and-treatment-of-rotavirus-diarrhea-in-human-and-animal-neonates-a-concise-review
#9
Hlaing Myat Thu, Theingi Win Myat, Mo Mo Win, Kyaw Zin Thant, Shofiqur Rahman, Kouji Umeda, Sa Van Nguyen, Faustino C Icatlo, Kyoko Higo-Moriguchi, Koki Taniguchi, Takao Tsuji, Keiji Oguma, Sang Jong Kim, Hyun Suk Bae, Hyuk Joon Choi
The rotavirus-induced diarrhea of human and animal neonates is a major public health concern worldwide. Until recently, no effective therapy is available to specifically inactivate the rotavirion particles within the gut. Passive immunotherapy by oral administration of chicken egg yolk antibody (IgY) has emerged of late as a fresh alternative strategy to control infectious diseases of the alimentary tract and has been applied in the treatment of diarrhea due to rotavirus infection. The purpose of this concise review is to evaluate evidence on the properties and performance of anti-rotavirus immunoglobulin Y (IgY) for prevention and treatment of rotavirus diarrhea in human and animal neonates...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28295629/increased-mid-abdominal-circumference-is-a-predictor-for-surgical-wound-complications-in-kidney-transplant-recipients-a-prospective-cohort-study
#10
M Taha, N F Davis, R Power, P Mohan, J Forde, G Smyth, D M Little
Kidney transplant recipients are at an increased risk of developing surgical site wound complications due to their immunosuppressed status. We aimed to determine if increased mid-abdominal circumference (MAC) is predictive for wound complications in transplant recipients. A prospective study was performed on all kidney transplant recipients from October 2014 to October 2015. 'Controls' consisted of kidney transplant recipients without a surgical site wound complication and 'cases' consisted of recipients that developed a wound complication...
March 15, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28293408/impact-of-donor-specific-anti-hla-antibodies-and-donor-kir-characteristics-in-haploidentical-hsct-for-beta-thalassemia
#11
Marco Andreani, Manuela Testi, Pietro Sodani, Maria Troiano, Andrea Di Luzio, Giuseppe Testa, Michela Falco, Elvira Poggi, Javid Gaziev, Antonina Piazza
No abstract text is available yet for this article.
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28284929/anti-hla-dq-antibodies-are-highly-and-independently-related-to-the-c1q-binding-capacity-of-hla-antibodies
#12
José M Arreola-Guerra, Luis E Morales-Buenrostro, Julio Granados, Natalia Castelán, Adrián de Santiago, Adriana Arvizu, Norma Gonzalez-Tableros, Mayra López, Mario Vilatobá, Josefina Alberú
The complement-binding capacity of anti-HLA antibodies (HLAabs) is recognized as a key pathogenic factor. The aim of this study is to describe the patient characteristics associated to the presence of C1q+ as well as those of the Abs per se when associated to C1q binding. METHODOLOGY: This is a cross-sectional, observational, descriptive study of patients with previous sensitizing factors and awaiting a kidney transplant (KT). We determined anti-HLA antibodies and their C1q binding capacity with the C1q assay...
March 8, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/28284829/histopathologic-changes-in-anti-angiotensin-ii-type-1-receptor-antibody-positive-kidney-transplant-recipients-with-acute-rejection-and-no-donor-specific-hla-antibodies
#13
Mary Ann Lim, Matthew Palmer, Jennifer Trofe-Clark, Roy Bloom, Annette Jackson, Mary Carmelle Philogene, Malek Kamoun
OBJECTIVE: To determine the association of antibodies against angiotensin II type 1 receptor (AT1R Ab) and histopathologic changes seen in patients with kidney allograft rejection and negative donor specific HLA antibodies (DSA). METHODS: Stored sera from 27 patients who had biopsy-proven rejection in the absence of DSA were tested for AT1R Ab. Biopsy slides of all patients were re-examined and classified according to Banff 2013 criteria. Histopathologic changes were compared between AT1R positive and negative patients...
March 8, 2017: Human Immunology
https://www.readbyqxmd.com/read/28274484/posttransplant-peripheral-blood-donor-specific-interferon-%C3%AE-enzyme-linked-immune-spot-assay-differentiates-risk-of-subclinical-rejection-and-de-novo-donor-specific-alloantibodies-in-kidney-transplant-recipients
#14
Elena Crespo, Paolo Cravedi, Jaume Martorell, Sergi Luque, Edoardo Melilli, Josep M Cruzado, Marta Jarque, Maria Meneghini, Anna Manonelles, Chiara Donadei, Núria Lloberas, Montse Gomà, Josep M Grinyó, Peter Heeger, Oriol Bestard
Noninvasive diagnosis of kidney allograft inflammation in transplant recipients with stable graft function (subclinical rejection) could permit more effective therapy and prevent later development of de novo anti-donor HLA antibodies and/or graft dysfunction. Here we tested whether quantifying posttransplant donor-specific alloreactive T-cells by IFN-γ ELISPOT assay noninvasively detects subclinical T-cell mediated rejection and/or predicts development of anti-donor HLA antibodies. Using an initial cross-sectional cohort of 60 kidney transplant patients with six-month surveillance biopsies, we found that negative donor-specific IFN-γ ELISPOT assays accurately ruled out the presence of subclinical T-cell mediated rejection...
March 5, 2017: Kidney International
https://www.readbyqxmd.com/read/28260472/anti-hla-antibody-levels-are-associated-with-the-risk-of-graft-failure-after-allogeneic-hematopoietic-stem-cell-transplant
#15
Bilkay Basturk, Mutlu Kasar, Mahmut Yeral, Miray Kavuzlu
OBJECTIVES: Allogeneic hematopoietic stem cell transplant provides a curative treatment for a considerable amount of hematologic diseases, and it is widely used today. Successful allogeneic stem cell transplant can be compromised by treatment-related toxicity, graft-versus-host disease, infectious complications, disease relapse, and graft failure. Primary graft failure is an important cause of hematopoietic stem cell transplant failure. Primary graft failure correlates with the level of complement-binding, donor-specific anti-HLA antibodies prior to transplant...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28256086/males-without-apparent-alloimmunization-could-have-hla-antibodies-that-recognize-target-hla-specificities-expressed-on-cells
#16
J Nakamura, F Nakajima, H Kamada, K Tadokoro, T Nagai, M Satake
BACKGROUND AND OBJECTIVES: Human leukocyte antigen (HLA) antibodies, which are involved in the development of transfusion-related side effects such as transfusion-related lung injury, are sometimes found in males without a history of alloimmunization (eg, transplantation and transfusion). Whether HLA antibodies in male donors can interact with their target HLA specificities expressed on cells have not been completely investigated. MATERIALS AND METHODS: The HLA antibodies detected in 7 male donors were characterized...
March 2, 2017: HLA
https://www.readbyqxmd.com/read/28255002/antibody-mediated-rejection-due-to-preexisting-versus-de-novo-donor-specific-antibodies-in-kidney-allograft-recipients
#17
Olivier Aubert, Alexandre Loupy, Luis Hidalgo, Jean-Paul Duong van Huyen, Sarah Higgins, Denis Viglietti, Xavier Jouven, Denis Glotz, Christophe Legendre, Carmen Lefaucheur, Philip F Halloran
Antibody-mediated rejection (ABMR) can occur in patients with preexisting anti-HLA donor-specific antibodies (DSA) or in patients who develop de novo DSA. However, how these processes compare in terms of allograft injury and outcome has not been addressed. From a cohort of 771 kidney biopsy specimens from two North American and five European centers, we performed a systematic assessment of clinical and biologic parameters, histopathology, circulating DSA, and allograft gene expression for all patients with ABMR (n=205)...
March 2, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28251805/effect-of-the-anti-c1s-humanized-antibody-tnt009-and-its-parental-mouse-variant-tnt003-on-hla-antibody-induced-complement-activation-a-preclinical-in-vitro-study
#18
M Wahrmann, J Mühlbacher, L Marinova, H Regele, N Huttary, F Eskandary, G Cohen, G F Fischer, Graham C Parry, J C Gilbert, S Panicker, G A Böhmig
The classical pathway (CP) of complement is believed to significantly contribute to alloantibody-mediated transplant injury, and targeted complement inhibition is currently considered to be a promising approach for preventing rejection. Here, we investigated the mode of action and efficacy of the humanized anti-C1s monoclonal antibody TNT009 and its parental mouse variant, TNT003, in preclinical in vitro models of HLA antibody-triggered CP activation. In flow cytometric assays, we measured the attachment of C1 subcomponents and C4/C3 split products (C4b/d, C3b/d) to HLA antigen-coated flow beads or HLA-mismatched aortic endothelial cells and splenic lymphocytes...
March 1, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28248701/autoimmune-encephalitis-with-anti-leucine-rich-glioma-inactivated-1-or-anti-contactin-associated-protein-like-2-antibodies-formerly-called-voltage-gated-potassium-channel-complex-antibodies
#19
Anna E M Bastiaansen, Agnes van Sonderen, Maarten J Titulaer
PURPOSE OF REVIEW: Twenty years since the discovery of voltage-gated potassium channel (VGKC)-related autoimmunity; it is currently known that the antibodies are not directed at the VGKC itself but to two closely associated proteins, anti-leucine-rich glioma-inactivated 1 (LGI1) and contactin-associated protein-like 2 (Caspr2). Antibodies to LGI1 and Caspr2 give well-described clinical phenotypes. Anti-LGI1 encephalitis patients mostly have limbic symptoms, and anti-Caspr2 patients have variable syndromes with both central and peripheral symptoms...
February 28, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28242033/a-composite-score-associated-with-spontaneous-operational-tolerance-in-kidney-transplant-recipients
#20
Richard Danger, Mélanie Chesneau, Chloé Paul, Pierrick Guérif, Maxim Durand, Kenneth A Newell, Sai Kanaparthi, Laurence A Turka, Jean-Paul Soulillou, Rémi Houlgatte, Magali Giral, Gérard Ramstein, Sophie Brouard
New challenges in renal transplantation include using biological information to devise a useful clinical test for discerning high- and low-risk patients for individual therapy and ascertaining the best combination and appropriate dosages of drugs. Based on a 20-gene signature from a microarray meta-analysis performed on 46 operationally tolerant patients and 266 renal transplant recipients with stable function, we applied the sparse Bolasso methodology to identify a minimal and robust combination of six genes and two demographic parameters associated with operational tolerance...
February 24, 2017: Kidney International
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