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https://www.readbyqxmd.com/read/28331448/antibody-mediated-rejection-a-review
#1
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
#2
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/28328655/vascularized-composite-allotransplantation-an-emerging-concept-for-burn-reconstruction
#3
Zhi Yang Ng, Alexandre G Lellouch, Tessa Drijkoningen, Irene A Chang, David H Sachs, Curtis L Cetrulo
Vascularized composite allotransplantation (VCA) has demonstrated utility in the reconstruction of extensive soft-tissue defects following severe burns. However, pre-VCA events such as multiple transfusions, previous transplantation and pregnancies, the use of skin allografts, and mechanical support devices may result in sensitization and ultimately exclude a burn patient, who may benefit most through VCA, from a hand or face transplant. The authors sought to identify the immunologic challenges involved. All reported VCA cases up to July 2016 were reviewed...
March 15, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28326672/bk-polyomavirus-specific-9mer-cd8-t-cell-responses-correlate-with-clearance-of-bk-viremia-in-kidney-transplant-recipients-first-report-from-the-swiss-transplant-cohort-study-stcs
#4
Céline Leboeuf, Sabrina Wilk, Rita Achermann, Isabelle Binet, Dela Golshayan, Karin Hadaya, Cedric Hirzel, Matthias Hoffmann, Uyen Huynh-Do, Michael T Koller, Oriol Manuel, Nicolas J Mueller, Thomas F Mueller, Stefan Schaub, Christian van Delden, Fabian H Weissbach, Hans H Hirsch
BK polyomavirus (BKPyV) causes premature kidney transplant (KT) failure in 1-15% of patients. Since antivirals are lacking, most programs screen for BKPyV-viremia and, if positive, reduce immunosuppression. To evaluate the relationship of viremia and BKPyV-specific immunity, we examined prospectively cryopreserved plasma and PBMCs at T0, T6, and T12 months post-transplant from 28 viremic KT patients and 68 non-viremic controls matched for the transplantation period. BKPyV-IgG seroprevalence was comparable between cases (89...
March 22, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28326188/physical-workload-is-associated-with-increased-risk-of-rheumatoid-arthritis-results-from-a-swedish-population-based-case-control-study
#5
Pingling Zeng, Lars Klareskog, Lars Alfredsson, Camilla Bengtsson
OBJECTIVES: This study investigated: (1) the association of physical workload (PW) and risk of rheumatoid arthritis (RA); (2) the potential interactions between PW and the genes in the human leucocyte antigen (HLA) region. METHODS: A population-based case-control study involving incident cases of RA (3150 cases and 5130 controls) was performed using data from the Swedish Epidemiological Investigation of Rheumatoid Arthritis. Information on 7 types of self-reported PW exposure and HLA-DRB1 genotypes of cases and controls were gathered...
2017: RMD Open
https://www.readbyqxmd.com/read/28321976/a-5-color-flow-cytometric-method-for-extended-8-part-leukocyte-differential
#6
Julien Guy, Orianne Wagner-Ballon, Olivier Pages, François Bailly, Jessica Borgeot, Marie-C Béné, Marc Maynadié
OBJECTIVES: Microscopic leukocyte differentials display many drawbacks. Several single 5 to 8-color tubes using multiparameter flow cytometry (MFC) are able to provide extended differentials with sequential gating-based analysis strategies. We investigated a new 5-color MFC method to perform an extended 8-part differential with a simplified gating strategy. METHODS: Whole blood was stained with a combination of antibodies including HLA-DR-FITC/CD19-PE/CD45-ECD/CD16-PC5+CD71-PC5/CD5-PC7...
March 21, 2017: Cytometry. Part B, Clinical Cytometry
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/28318744/calculated-panel-reactive-antibody-predicts-outcomes-on-the-heart-transplant-waiting-list
#9
Evan P Kransdorf, Michelle M Kittleson, Jignesh K Patel, Marcelo J Pando, D Eric Steidley, Jon A Kobashigawa
BACKGROUND: Sensitized heart transplant candidates spend more time and have higher mortality on the waiting list. Although the calculated panel-reactive antibody (CPRA) value is used to assign allocation priority to kidney transplant candidates in the United States, the relationship between CPRA and outcomes on the heart transplant waiting list is unknown. METHODS: A data set of patients listed for heart transplant with unacceptable human leukocyte antigens (HLA) entered was obtained from the United Network for Organ Sharing...
February 17, 2017: Journal of Heart and Lung Transplantation
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
#10
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/28314946/late-onset-islet-autoimmunity-in-childhood-the-diabetes-autoimmunity-study-in-the-young-daisy
#11
Brigitte I Frohnert, Lisa Ide, Fran Dong, Anna E Barón, Andrea K Steck, Jill M Norris, Marian J Rewers
AIMS/HYPOTHESIS: We sought to assess the frequency, determinants and prognosis for future diabetes in individuals with islet autoimmunity and whether these factors differ depending on the age of onset of islet autoimmunity. METHODS: A prospective cohort (n = 2547) of children from the general population who had a high-risk HLA genotype and children who had a first-degree relative with type 1 diabetes were followed for up to 21 years. Those with the persistent presence of one or more islet autoantibodies were categorised as early-onset (<8 years of age, n = 143, median 3...
March 17, 2017: Diabetologia
https://www.readbyqxmd.com/read/28314294/mismatch-repair-protein-deficiency-is-a-risk-factor-for-aberrant-expression-of-hla-class-i-molecules-a-putative-adaptive-immune-escape-phenomenon
#12
Terufumi Kubo, Yoshihiko Hirohashi, Kazuhiko Matsuo, Tomoko Sonoda, Hiroki Sakamoto, Kiyoshi Furumura, Tomohide Tsukahara, Takayuki Kanaseki, Munehide Nakatsugawa, Hiroshi Hirano, Tomohisa Furuhata, Ichiro Takemasa, Tadashi Hasegawa, Toshihiko Torigoe
Accumulating evidence indicates that immune checkpoint inhibition-mediated cancer immunotherapies greatly improve the prognosis of certain types of cancer. This approach is now becoming a standard therapy, joining surgery, radiotherapy, and chemotherapy. Because the costs of antibody drugs are now a socioeconomic burden in many countries, an urgent need in cancer immunotherapy is the identification of relevant biomarkers that can predict therapy efficacy. Recent studies have reported that colorectal adenocarcinoma with hereditary or sporadic deficiency in mismatch repair (MMR) proteins has high antigenicity and that detection of these proteins could be a promising way to estimate clinical response...
March 2017: Anticancer Research
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
#13
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/28295360/human-platelet-antigen-antibody-induction-in-uncomplicated-pregnancy-is-associated-with-hla-sensitization
#14
Viktoria S A Reiher, Gideon Hönger, Laura Infanti, Jakob R Passweg, Irene Hösli, Beat M Frey, Christoph Gassner, Stefan Meyer, Andreas S Buser, Andreas Holbro, Stefan Schaub
BACKGROUND: Alloimmunization against human platelet antigens (HPAs) during pregnancy is rare but can lead to severe bleeding disorders, such as fetal and neonatal alloimmune thrombocytopenia. STUDY DESIGN AND METHODS: In a cohort of 241 uncomplicated pregnancies, we investigated the immunogenicity of HPA mismatches and correlated HLA sensitization with HPA antibody formation. HPA antibodies were measured with a Luminex-based multiplex assay. RESULTS: HPA mismatches were observed in 109 of 241 pregnancies (45%), but child-specific HPA antibodies were only found in two of 109 cases (2%), indicating a low immunogenicity...
March 10, 2017: Transfusion
https://www.readbyqxmd.com/read/28293408/impact-of-donor-specific-anti-hla-antibodies-and-donor-kir-characteristics-in-haploidentical-hsct-for-beta-thalassemia
#15
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/28293239/major-histocompatibility-complex-class-i-chain-related-a-mica-molecules-relevance-in-solid-organ-transplantation
#16
REVIEW
Ajay Kumar Baranwal, Narinder K Mehra
An ever growing number of reports on graft rejection and/or failure even with good HLA matches have highlighted an important role of non-HLA antigens in influencing allograft immunity. The list of non-HLA antigens that have been implicated in graft rejection in different types of organ transplantation has already grown long. Of these, the Major Histocompatibility Complex class I chain-related molecule A (MICA) is one of the most polymorphic and extensively studied non-HLA antigenic targets especially in the kidney transplantation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28289413/mica-and-nkg2d-is-there-an-impact-on-kidney-transplant-outcome
#17
REVIEW
Matilde Risti, Maria da Graça Bicalho
This paper aims to present an overview of MICA and natural killer group 2 member D (NKG2D) genetic and functional interactions and their impact on kidney transplant outcome. Organ transplantation has gone from what can accurately be called a "clinical experiment" to a routine and reliable practice, which has proven to be clinically relevant, life-saving and cost-effective when compared with non-transplantation management strategies of both chronic and acute end-stage organ failures. The kidney is the most frequently transplanted organ in the world (transplant-observatory)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28284929/anti-hla-dq-antibodies-are-highly-and-independently-related-to-the-c1q-binding-capacity-of-hla-antibodies
#18
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
#19
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/28284304/kidney-paired-exchange-and-desensitization-strategies-to-transplant-the-difficult-to-match-kidney-patients-with-living-donors
#20
REVIEW
Thomas A Pham, Jacqueline I Lee, Marc L Melcher
With organs in short supply, only a limited number of kidney transplants can be performed a year. Live donor donation accounts for 1/3rd of all kidney transplants performed in the United States. Unfortunately, not every donor recipient pair is feasible because of Human leukocyte antigen (HLA) sensitization and ABO incompatibility. To overcome these barriers to transplant, strategies such as kidney paired donation (KPD) and desensitization have been developed. KPD is the exchange of donors between at least two incompatible donor-recipient pairs such that they are now compatible...
January 2017: Transplantation Reviews
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