Articles tagged "HLA antibodies"

2019 American Transplant Congress
Successful Kidney Transplantation of Highly Sensitized Candidates across Positive Cross Match and Strong Donor-Specific HLA-DP Antibodies without Desensitization
R. Rajalingam¹, D. D. Gae², Z. G. Laszik³, M. M. Tavakol⁴, A. B. Webber⁵, K. Cunniffe², G. da Gente², R. Hirose⁴, G. Roll⁴, C. E. Freise⁴, J. P. Roberts⁴
¹Immunogenetics and Transplantation Laboratory (ITL), San Francisco, CA, ²Department of Surgery, Immunogenetics and Transplantation Laboratory (ITL), San Francisco, CA, ³Department of Pathology, University of California San Francisco, San Francisco, CA, ⁴Department of Surgery, University of California San Francisco, San Francisco, CA, ⁵Department of Medicine, University of California San Francisco, San Francisco, CA
*Purpose: Over 50% of kidney transplant (Ktx) candidates with 100% CPRA display HLA-DP antibodies, which impair the chances of finding a compatible deceased donor (DD)…
2019 American Transplant Congress
Characterization of HLA Antibodies by C3d Assay and IgG Subclasses in Sensitized Kidney Transplant Patients
A. Casillas-Abundis, J. M. Arreola-Guerra, J. Alberu, M. I. Solis-G, L. Llorente, J. Granados, M. Vilatoba, R. Cruz-Martinez, L. Morales-Buenrostro, A. G. Contreras
Instituto Nacional de Ciencias Medicas y Nutricion SZ, Mexico City, Mexico
*Purpose: To determine the detection rate of IgG subclasses (IgGsc) and C3d-binding HLA-antibodies (abs) in a cohort of highly sensitized kidney transplant patients.*Methods: We evaluated,…
2019 American Transplant Congress
Living Donor Renal Transplantation without Any Induction Immunosuppression in Spousal Donors – Single Center Experience
R. Bhat, F. Aziz, I. N. Abubecker, S. Narayanan, B. Hafeeque
Nephrology & Transplantation, Malabar Instiute of Medical Sciences, Calicut, India
*Purpose: Renal transplantation in India is primarily driven by living related donation; parents and spouse constitute 70% of donors in India. Some centres use induction…
2019 American Transplant Congress
Targeted Epitope Mutagenesis as a Strategy to Decrease Xenoantibody Binding
J. Ladowski, G. Martens, Z. Wang, L. Reyes, M. Tector, J. Tector
University of Alabama-Birmingham, Birmingham, AL
*Purpose: Xenotransplantation, the use of genetically-modified pig organs for transplantation, has been limited by antibody-mediated rejection. The generation of a three-antigen knockout pig provided a…
2019 American Transplant Congress
Inhibition of mTORC2 Causes Hyper Phosphorylation of ERK Induced by Co-Ligation of HLA-I and II Antibody
Y. Jin¹, J. Sinnet-Smith², E. Rozengurt², E. F. Reed¹
¹Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, CA, ²Medicine, University of California Los Angeles, Los Angeles, CA
*Purpose: Transplant recipients developing donor specific antibodies (DSA) are at risk for antibody-mediated rejection (AMR). It has been reported that as many as 30% of…
2019 American Transplant Congress
Impact of IgG Subclass and C1q Binding Donor-Specific HLA Antibodies on Antibody Mediated Rejection in Kidney Transplant Recipients
H. Lee¹, J. Ryu¹, S. Yun¹, T. Ban², E. Ko², C. Yang², E. Oh¹
¹Department of Laboratory Medicine, The Catholic University of Korea, Seoul, Korea, Republic of, ²Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea, Republic of
*Purpose: Donor specific HLA antibody (DSA) is a leading cause of antibody mediated rejection (AMR) and graft loss in kidney transplants. It is known that…
2019 American Transplant Congress
Outcomes of Induction Therapy with Bortezomib and High-Dose Intravenous Immunoglobulin for Kidney Transplantation with Preformed Donor-Specific Anti-Human Leukocyte Antigen Antibodies
Y. Miyauchi, T. Noda, N. Miura, T. Kikugawa, T. Saika
Department of Urology, Ehime University, Toon, Japan
*Purpose: Preformed donor-specific anti-human leukocyte antigen (HLA) antibodies (DSAs) are known to increase the risk of antibody-mediated rejection (ABMR) and graft failure. However, effective methods…
2019 American Transplant Congress
Computational Assessment of T-cell and B-cell Allorecognition to Predict Donor HLA Immunogenicity
H. C. Copley¹, M. Elango¹, V. Kosmoliaptsis²
¹Department of Surgery, University of Cambridge and NIHR Cambridge Biomedical Research Centre, Cambridge University Hospital, Cambridge, United Kingdom, ²University of Cambridge and NIHR Cambridge Biomedical Research Centre, Cambridge University Hospital & NIHR Blood and Transplant Research Unit in Organ Donation and Transplantation at the University of Cambridge, Cambridge, UK., Cambridge, United Kingdom
*Purpose: Donor-specific alloantibody (DSA) development after solid-organ transplantation is a major cause of graft loss, and limits future transplant options. We have previously shown that…
2019 American Transplant Congress
Back Signaling of HLA Class I Molecules and NK Cell Receptor Ligands in Renal Epithelial Cells Contributes to the Rejection-Specific Microenvironment
E. Chichelnitskiy¹, J. Egelkamp¹, K. Daemen¹, J. Keil¹, C. Neudörfl¹, J. Bräsen², J. Schmitz², H. Haller³, C. Blume⁴, C. Falk⁵
¹Institute of Transplant Immunology, Hannover Medical School, Hannover, Germany, ²Nephropathology Unit, Institute of Pathology, Hannover Medical School, Hannover, Germany, ³Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany, ⁴Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany; Institute of Technical Chemistry, Leibniz University, Hannover, Germany, ⁵Institute of Transplant Immunology, Hannover Medical School; DZIF, German Center for Infection Research, TTU-IICH, Hannover/Braunschweig, Germany
*Purpose: During the last years, diverse harming mechanisms of donor-specific antibodies (DSA) to endothelial cells have been studied accompanied by an emerging evidence of NK…
2019 American Transplant Congress
Patients with Immunological Diseases or on Peritoneal Dialysis Are Prone to False Positive Flow Cytometry Cross Match
Q. Xu¹, A. House², S. Leckie¹, L. Gunaratnam², P. Luke³, A. Jevnikar²
¹Pathology and Lab Medicine, London Health Science Center, London, ON, Canada, ²Medicine, Western University, London, ON, Canada, ³Surgery, Western University, London, ON, Canada
*Purpose: Despite implementation of virtual cross matches, flow cytometry cross matches (FCXM) are still used by many transplant centers to determine immunological risk prior to…