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https://www.readbyqxmd.com/read/29676812/impact-of-pretransplant-donor-specific-antibodies-on-kidney-allograft-recipients-with-negative-flow-cytometry-crossmatches
#1
Hyunwook Kwon, Young Hoon Kim, Ji Yoon Choi, Sung Shin, Joo Hee Jung, Su-Kil Park, Duck Jong Han
The Luminex test can detect low levels of donor-specific antibody (DSA) that cannot be detected by flow-cytometric crossmatching (FCXM) in kidney transplantation (KT). This study evaluated the impact of DSA on clinical outcomes in KT recipients negative on FCXM. Of 575 consecutive patients who underwent living donor KT between January 2013 and July 2016, 494 (85.9%) were DSA-negative and 81 (14.1%) were DSA-positive. Although rates of acute cellular rejection (ACR) at 1 year were similar in the two groups (P = 0...
April 20, 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29676803/outcome-of-the-risk-stratified-desensitization-protocol-in-donor-specific-antibody-positive-living-kidney-transplant-recipients-a-retrospective-study
#2
Daigo Okada, Masayoshi Okumi, Yoichi Kakuta, Kohei Unagami, Junpei Iizuka, Toshio Takagi, Hideki Ishida, Kazunari Tanabe
Acceptable outcomes of donor-specific antibody (DSA)-positive living kidney transplantation (LKT) have recently been reported. However, LKT in crossmatch (XM)-positive patients remains at high-risk and requires an optimal desensitization protocol. We report our intermediate-term outcomes of XM-positive LKT versus XM-negative LKT in patients who underwent LKT between January 2012 and June 2015 in our institution. The rate of acute antibody-mediated rejection (ABMR) within 90 days post-operation, graft function, and patient and graft survival rates at 4 years were investigated...
April 20, 2018: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/29676700/impact-of-allograft-nephrectomy-on-second-renal-transplant-outcome
#3
Masaki Muramatsu, Yoji Hyodo, Michael Sheaff, Arun Gupta, Neil Ashman, Atsushi Aikawa, Magdi Yaqoob, Carmelo Puliatti
OBJECTIVES: The impact of allograft nephrectomy on the outcome of a subsequent renal transplant is unclear. This study was conducted to assess the effects of the first allograft nephrectomy on outcomes of a second transplant. MATERIALS AND METHODS: This study included 118 patients who received a second transplant between 1994 and 2015. Before the second transplant, 59 patients did not undergo a first allograft nephrectomy (group A). Group B comprised 59 patients who had undergone a first allograft nephrectomy...
April 20, 2018: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29672702/the-disappointing-contribution-of-anti-human-leukocyte-antigen-donor-specific-antibodies-characteristics-for-predicting-allograft-loss
#4
Maxime Courant, Jonathan Visentin, Gabriel Linares, Valérie Dubois, Sébastien Lepreux, Gwendaline Guidicelli, Olivier Thaunat, Pierre Merville, Lionel Couzi, Jean-Luc Taupin
Background: Pathogenicity of donor-specific antibodies (DSAs) can be assessed using the single-antigen flow beads (SAFB) assays through mean fluorescence intensity (MFI) with or without serum ethylenediaminetetraacetic acid (EDTA) treatment, measurement of C1q or C3d binding and/or their intragraft detection [graft-bound donor-specific antibody (gDSA)]. We aimed to investigate which of these markers best associates with antibody-mediated rejection (ABMR) and kidney allograft loss at the time of a for-cause biopsy...
April 17, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29669260/limited-impact-of-pre-existing-donor-specific-hla-antibodies-dsa-on-long-term-allograft-survival-after-first-adult-liver-transplantation
#5
Martina Koch, Matthias Marget, Martina Sterneck, Lutz Fischer, Hansjörg Thude, Björn Nashan
The relevance of pre-existing HLA-antibodies (HLA-Ab) in liver transplantation (LTx) is controversial. While livers are allocated without HLA match or preoperative crossmatch testing, several studies point to an impact of donor specific antibodies (DSA) for acute rejection, bile duct complications or even graft loss. To investigate the role of DSA in long term liver allograft survival we analysed 177 pre transplant sera of first LTx patients with luminex single antigen technology defining a MFI of >1500 as positive...
April 15, 2018: Human Immunology
https://www.readbyqxmd.com/read/29666680/determination-of-an-aspergillus-fumigatus-specific-immunoglobulin-g-reference-range-in-an-adult-omani-population
#6
Munira Al-Rahman, Mahmood Al Kindi, Ibrahim Kutty, Ibrahim Al-Kalbani, Jalila Alshekaili
Objectives: The presence of abnormally high levels of Aspergillus fumigatus -specific immunoglobulin (Ig) G antibodies can serve as a diagnostic criterion for severe conditions like allergic bronchopulmonary and chronic pulmonary aspergillosis. This study aimed to determine a reference range of A. fumigatus -specific IgG levels within a healthy adult Omani population. Methods: This study took place during November 2015 at the Sultan Qaboos University Hospital, Muscat, Oman...
February 2018: Sultan Qaboos University Medical Journal
https://www.readbyqxmd.com/read/29665929/-anti-cd36-mediated-platelet-transfusion-refractoriness-and-related-cases-after-stem-cell-transplantation
#7
Yan Zhou, Li-Lan Li, Zhou-Lin Zhong, Xue-Jun Liu, Jin-Lian Liu, Wei-Dong Shen, Guo-Guang Wu
OBJECTIVE: To analyse the cases of platelet transfusion refractoriness after received HLA-matched unrelated donor hematopoietic stem cell transplantation, to analyze and identify the phenotype and genotype of CD36 in both the patient and stem cell donor, as well as the characteristic of antibody induced platelet transfusion refractoriness, and to analyse the efficacy of matched CD36-deficiency platelets transfusions. METHODS: The CD36 expression on platelet and monocyte was analyzed by flow cytometry (FCM) in both patient and donor...
April 2018: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29665816/selective-localization-of-igg-from-cerebrospinal-fluid-to-brain-parenchyma
#8
Marlene Thorsen Mørch, Sofie Forsberg Sørensen, Reza Khorooshi, Nasrin Asgari, Trevor Owens
BACKGROUND: Encounter of autoantibodies with specific antigens can lead to hypersensitivity reactions and pathology. In multiple sclerosis and neuromyelitis optica spectrum disease (NMOSD), immunoglobulin-G (IgG) deposition has been observed in pathological lesions in the central nervous system. The paradigmatic autoantibodies in NMOSD are specific for the water channel aquaporin-4, localized to astrocytic end-feet at the blood-brain barrier and ependymal cells at the cerebrospinal fluid-brain barrier...
April 17, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29665321/a-novel-ano5-splicing-variant-in-a-lgmd2l-patient-leads-to-production-of-a-truncated-aggregation-prone-ano5-peptide
#9
Jing Xu, Li Xu, Yeh S Lau, Yandi Gao, Steven A Moore, Renzhi Han
Mutations in ANO5 cause several human diseases including gnathodiaphyseal dysplasia 1 (GDD1), limb-girdle muscular dystrophy 2L (LGMD2L), and Miyoshi myopathy 3 (MMD3). Previous work showed that complete genetic disruption of Ano5 in mice did not recapitulate human muscular dystrophy, while residual expression of mutant Ano5 in a gene trapped mouse developed muscular dystrophy with defective membrane repair. This suggests that truncated Ano5 expression may be pathogenic. Here, we screened a panel of commercial anti-Ano5 antibodies using a recombinant adenovirus expressing human Ano5 with FLAG and YFP at the N- and C-terminus, respectively...
April 2018: Journal of Pathology. Clinical Research
https://www.readbyqxmd.com/read/29665189/prevalence-risk-factors-and-impact-of-donor-specific-alloantibodies-after-adult-liver-transplantation
#10
Katia Vandevoorde, Stéphanie Ducreux, Alexie Bosch, Olivier Guillaud, Valérie Hervieu, Christine Chambon-Augoyard, Domitille Poinsot, Patrice André, Jean-Yves Scoazec, Philip Robinson, Olivier Boillot, Valérie Dubois, Jérôme Dumortier
The incidence and impact of anti-HLA donor-specific alloantibodies (DSA) developing after liver transplantation (LT) remains controversial and not extensively studied. The aim of the present study was to assess the incidence of DSA, identify risk factors for the development of DSA, and the impact of DSA in a large population of adult LT recipients. This single center retrospective study included all adult patients who underwent a first LT between 2000 and 2010 in our center. The study population mainly consisted in male patients, the mean age was 52...
April 17, 2018: Liver Transplantation
https://www.readbyqxmd.com/read/29664112/efficacy-of-d-red-blood-cell-transfusion-and-rituximab-therapy-in-autoimmune-hemolytic-anemia-with-anti-d-and-panreactive-autoantibodies-arising-after-hematopoietic-stem-cell-transplant
#11
Keiji Minakawa, Hitoshi Ohto, Hiroyasu Yasuda, Shunichi Saito, Kinuyo Kawabata, Kazuei Ogawa, Kenneth E Nollet, Kazuhiko Ikeda
BACKGROUND: Autoimmune hemolytic anemia (AIHA) is caused by autoantibodies to red blood cells (RBCs), which can be panreactive and/or specific to Rh/other blood group antigens. We report a severe case of AIHA after bone marrow transplantation (BMT) due to autoanti-D triggered by reactivation of Epstein-Barr virus (EBV) infection. A combined strategy of D- RBC transfusion and administration of anti-CD20 monoclonal antibody (MoAb) resolved the hemolysis. CASE REPORT: A 33-year-old male underwent allogeneic BMT from an ABO-identical and HLA-matched unrelated male donor...
April 17, 2018: Transfusion
https://www.readbyqxmd.com/read/29663453/seroprevalence-of-zika-virus-and-rubella-virus-igg-among-blood-donors-in-rwanda-and-in-sweden
#12
Eric Seruyange, Jean-Bosco Gahutu, Claude Mambo Muvunyi, Swaibu Katare, Vedaste Ndahindwa, Hassan Sibomana, José Nyamusore, Florent Rutagarama, Charles Hannoun, Helene Norder, Tomas Bergström
Statement of the problem Seroprevalence studies provide information on the susceptibility to infection of certain populations, including women of childbearing age. Such data from Central Africa are scarce regarding two viruses that cause congenital infections: Zika virus (ZIKV), an emerging mosquito-borne infection, and rubella virus (RuV), a vaccine-preventable infection. We report on the seroprevalence of both ZIKV and RuV from Rwanda, a country without any known cases of ZIKV, but bordering Uganda where this virus was isolated in 1947...
April 16, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29662050/does-vitamin-d-affect-chronic-renal-allograft-function-in-pediatric-transplant-patients
#13
Brooke Wile, Elisa Yoo, Ana Catalina Alvarez Elias, Lakshmimathy Subramanian, Kathryn Eager, Ajay Parkesh Sharma, Guido Filler
BACKGROUND Correction of hypovitaminosis D is simple, but it is unclear whether it is associated with an accelerated decline of renal allograft function in pediatric renal transplantation patients. This retrospective single center cohort study aimed at analyzing the effect of vitamin D and covariates on the slope of 1/creatinine after the first year. MATERIAL AND METHODS After ethics committee approval, 37 (14 male) pediatric renal transplant recipients on mycophenolate mofetil, who were followed between 2006 and 2014, were included in this study...
April 17, 2018: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/29661426/delayed-graft-function-predictive-factors-and-7-year-outcome-of-deceased-donor-kidney-transplant-recipients-with-different-immunologic-profiles
#14
A H D S Quintella, M F Lasmar, R A Fabreti-Oliveira, E Nascimento
BACKGROUND: Delayed graft function (DGF) is the major post-transplant cause of deleterious effects to the allograft and is associated with poor allograft survival. The aim of this study was to report the outcomes of 236 kidney transplant recipients with different immunologic profiles. METHODS: All patients underwent transplantation (2008-2016) with a deceased donor at the University Hospital of the Faculty of Medical Science, Belo Horizonte, Minas Gerais, Brazil...
April 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29661424/intravenous-immunoglobulin-and-rituximab-in-hla-highly-sensitized-kidney-transplant-recipients
#15
S Querido, A Weigert, T Adragão, J Henriques, R Birne, P Matias, C Jorge, C Nascimento, M Bruges, D Machado
INTRODUCTION: HLA-sensitized patients are penalized both in the access to kidney transplantation (KT) and, once transplanted, in the incidence of rejections and long-term allograft survival despite aggressive induction and maintenance therapy. METHODS: This study retrospectively evaluates the impact of combining T- and B-cell-depleting agents and intravenous immunoglobulin for induction therapy in 45 highly sensitized KT patients (anti-panel reactive antibodies >60%, positive flow cytometry crossmatch or donor specific antibodies at the time of transplantation)...
April 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29660004/renal-transplant-outcomes-and-de-novo-donor-specific-anti-human-leukocyte-antigen-antibodies-a-systematic-review
#16
Ankit Sharma, Joshua R Lewis, Wai H Lim, Suetonia Palmer, Giovanni Strippoli, Jeremy R Chapman, Stephen I Alexander, Jonathan C Craig, Germaine Wong
Background: Pre-transplant donor-specific anti-human leukocyte antigen antibodies (DSAs) are known risk factors for acute rejection and reduced graft survival after kidney transplantation. DSAs may also develop de novo DSAs (dnDSAs) after transplantation but the clinical implications of these antibodies remain uncertain. Methods: We undertook a systematic review of observational studies that examined the association between dnDSAs and graft and patient outcomes (through August 2017) with the Grading of Recommendations Assessment, Development and Evaluation (GRADE) system of reporting used to assess the quality of evidence available...
April 11, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29659162/clinical-utility-of-complement-dependent-c3d-assay-in-kidney-recipients-presenting-with-late-allograft-dysfunction
#17
James H Lan, David Gjertson, Ying Zheng, Stephanie Clark, Elaine F Reed, J Michael Cecka
The objective of this study was to evaluate the utility of a complement-dependent C3d assay to risk-stratify donor-specific antibodies (DSA) in a multicenter cohort of kidney recipients presenting with new-onset clinical dysfunction. One hundred and six subjects with evidence of DSA at a mean period of 5.3 ± 5.0 years posttransplant underwent testing using C3d reagents. C3d positivity was strongly associated with both the peak and sum IgG DSA MFI, with 98.3% (n=57/58) of strongly reactive sera (peak MFI >10,000) eliciting a positive signal...
April 16, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29656137/haploidentical-peripheral-blood-stem-cell-transplantation-demonstrates-stable-engraftment-in-adults-with-sickle-cell-disease
#18
Santosh L Saraf, Annie L Oh, Pritesh R Patel, Karen Sweiss, Matthew Koshy, Sally Campbell-Lee, Michel Gowhari, Shivi Jain, David Peace, John G Quigley, Irum Khan, Robert E Molokie, Nadim Mahmud, Victor R Gordeuk, Damiano Rondelli
We report on the screening and development of haploidentical hematopoietic stem cell transplantation (HSCT) for adult patients with clinically aggressive sickle cell disease (SCD) at our institution. Of 50 adult SCD patients referred for HSCT between 1/2014-3/2017, 20% were denied by insurance. Of 41 patients initially screened, 10% lacked an available haploidentical donor, 29% had elevated donor specific antibodies (DSA) and 34% declined to proceed to HSCT. All 10 patients who were transplanted received peripheral blood stem cells (PBSC)...
April 12, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29649973/clinical-and-histological-evolution-after-de-novo-donor-specific-anti-human-leukocyte-antigen-antibodies-a-single-centre-retrospective-study
#19
Yassine Bouatou, Olivia Seyde, Solange Moll, Pierre-Yves Martin, Jean Villard, Sylvie Ferrari-Lacraz, Karine Hadaya
BACKGROUND: Donor-specific anti-human leukocyte antigen (HLA) antibodies (DSA) can be preformed or de novo (dn). Strategies to manage preformed DSA are well described, but data on the management and outcomes of dnDSA are lacking. METHODS: We performed a retrospective analysis of data from a single centre of the management and outcomes of 22 patients in whom a dnDSA was identified with contemporary and follow up biopsies. RESULTS: Evolution from baseline to follow up revealed a statistically significant loss of kidney function (estimated glomerular filtration rate: 45...
April 12, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29645295/seroprevalence-of-zika-virus-and-rubella-virus-igg-among-blood-donors-in-rwanda-and-in-sweden
#20
Eric Seruyange, Jean-Bosco Gahutu, Claude Mambo Muvunyi, Swaibu Katare, Vedaste Ndahindwa, Hassan Sibomana, José Nyamusore, Florent Rutagarama, Charles Hannoun, Helene Norder, Tomas Bergström
Statement of the problem Seroprevalence studies provide information on the susceptibility to infection of certain populations, including women of childbearing age. Such data from Central Africa are scarce regarding two viruses that cause congenital infections: Zika virus (ZIKV), an emerging mosquito-borne infection, and rubella virus (RuV), a vaccine-preventable infection. We report on the seroprevalence of both ZIKV and RuV from Rwanda, a country without any known cases of ZIKV, but bordering Uganda where this virus was isolated in 1947...
April 12, 2018: Journal of Medical Virology
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