Ultrastructural changes in pulmonary allografts with antibody mediated rejection

This study aimed to define the ultrastructural changes of the endothelium in lung allografts in the setting of AMR and determine its specificity for AMR.
Source: The Journal of Heart and Lung Transplantation - Category: Transplant Surgery Authors: Tags: Original Clinical Science Source Type: research

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This study aimed to define the ultrastructural changes of the endothelium in lung allografts in the setting of AMR and determine its specificity for AMR.
Source: The Journal of Heart and Lung Transplantation - Category: Transplant Surgery Authors: Tags: ORIGINAL CLINICAL SCIENCE Source Type: research
Antibody-mediated rejection continues to hinder long-term survival of solid organ allografts. Natural antibodies (Nabs) with polyreactive and autoreactive properties have recently emerged as potential contributors to antibody-mediated graft rejection. This review discusses Nabs, their functions in health and disease, their significance in rejection following kidney, heart, and lung transplantation, and their implication in serum reactivity to key antigens associated with rejection. Finally, potential effector mechanisms of Nabs in the context of transplantation are explored.
Source: Transplantation - Category: Transplant Surgery Tags: Original Basic Science—General Source Type: research
Purpose of review The present review will focus on recently published data of solid organ allograft recipients reporting that patients with de-novo donor-specific HLA antibodies (DSA) that fix complement in vitro have a significantly higher risk for antibody-mediated rejection (AMR) and/or graft loss compared to patients whose de-novo DSA do not fix complement or patients who present with preexisting complement fixing DSA. Recent findings HLA DSAs that fix complement in vitro appear to be a key indicator for rejection and failure of kidney, heart, and lung allografts from studies performed around the world. The majori...
Source: Current Opinion in Organ Transplantation - Category: Surgery Tags: KIDNEY PANCREAS: Edited by Matthew Cooper Source Type: research
In patients awaiting heart transplantation (HTx), end-stage disease of a second organ may occasionally require consideration of simultaneous multiorgan transplantation. As cardiac and renal disease are related physiologically and often co-exist, the population of combined heart and kidney transplantation (HKTx) has significantly increased over the last few years along with the growing number of patients wait listed for heart.1,2 Interestingly, short-term survival rates after HKTx have been reported to be comparable to those after isolated HTx.
Source: The Journal of Heart and Lung Transplantation - Category: Transplant Surgery Authors: Tags: Original Clinical Science Source Type: research
Because cardiac and renal disease are physiologically related and often coexist, the prevalence of combined heart and kidney transplantation (HKTx) has significantly increased over the last few years. It has been suggested that combined organ allografts modulate the immune system favorably for one or both allografts resulting in successful clinical outcomes. However, whether the addition of kidney transplantation has a protective immune effect against developing cardiac allograft vasculopathy (CAV) has not been fully investigated.
Source: The Journal of Heart and Lung Transplantation - Category: Transplant Surgery Authors: Tags: ORIGINAL CLINICAL SCIENCE Source Type: research
Abstract Finding a non-invasive biomarker to monitor allograft status after transplantation could contribute to better control of the post-transplant status of transplant recipients and, if possible, could be used instead of invasive biopsy for proving rejection. On the other hand, reducing the dosage of immunosuppression or stopping lifelong use of them because of their severe side effects is an important goal in order to dispose of their severe side effects. The ability of exosomes as a biomarker of rejection and as a therapeutic strategy was investigated in the human kidney, heart, and lung transplantation or i...
Source: Clinical Immunology - Category: Allergy & Immunology Authors: Tags: Clin Immunol Source Type: research
Conclusions. donors are a demographically and clinically diverse group. Understanding this diversity and future trends in VCA donor characteristics is critical in supporting this life-changing field of transplantation.
Source: Transplantation - Category: Transplant Surgery Tags: Original Clinical Science—General Source Type: research
In conclusion, circulating MDSCs are measurable, functional and have a G-MDSC phenotype in lung transplant patients. Their frequency is increased in stable patients, decreased during post-transplant complications, and related to level of immunosuppression. This study may pave the way for further investigations of MDSC in the context of lung transplantation. Introduction From a transplant immunological point of view, graft acceptance is the fundamental element in allograft survival. Graft acceptance is realized by blocking the immune system with immunosuppression preventing host immune cells to recognized and attack...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Abstract Antibodies against two G-protein coupled receptors (GPCRs), angiotensin II type 1 receptor (AT1R) and endothelin A receptor (ETAR) are among a growing number of autoantibodies that are found to be associated with allograft dysfunction. AT1R antibodies (AT1Rabs) and ETAR antibodies (ETARabs) have been shown to activate their target receptors and affect signaling pathways. Multiple single center reports have shown an association between presence of these antibodies and acute or chronic rejection and graft loss in kidney, heart, liver, lung and composite tissue transplantations. However, the characteristics ...
Source: Human Immunology - Category: Allergy & Immunology Authors: Tags: Hum Immunol Source Type: research
Qiancheng Deng1, Yangyang Luo1,2, Christopher Chang3, Haijing Wu1, Yan Ding4* and Rong Xiao1* 1Hunan Key Laboratory of Medical Epigenetics, Department of Dermatology, The Second Xiangya Hospital, Central South University, Changsha, China 2Department of Dermatology, Hunan Children's Hospital, Changsha, China 3Division of Rheumatology, Allergy and Clinical Immunology, University of California, Davis, Davis, CA, United States 4Department of Dermatology, Hainan Provincial Dermatology Disease Hospital, Haikou, China Autoimmune diseases are usually complex and multifactorial, characterized by aberrant produc...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
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