Articles tagged "IgG"

2021 American Transplant Congress
Marginal Zone B Cells Support Donor-Specific Alloantibody Responses to Heart Allografts
V. Gorbacheva, R. Fan, W. Baldwin, R. Fairchild, A. Valujskikh
Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
*Purpose: Production of high affinity isotype-switched donor specific alloantibodies (DSA) after transplantation is associated with germinal center formation by follicular (FO) B cells whereas the…
2021 American Transplant Congress
Acoustofluidic Device to Remove Donor Specific Antibody in a Sensitized Animal Model
J. Kwun¹, E. David², Y. Gu³, Z. Ma³, M. Kuchibhatla⁴, G. Arepally⁵, T. J. Huang³, E. T. Chambers²
¹Surgery, Duke University, Durham, NC, ²Pediatrics, Duke University, Durham, NC, ³Biomedical Engineering, Duke University, Durham, NC, ⁴Biostatistics and Bioinformatics, Duke University, Durham, NC, ⁵Internal Medicine, Duke University, Durham, NC
*Purpose: Current therapies for antibody-mediated rejection are neither donor-specific nor are they tailored toward children, resulting in premature allograft loss and increased mortality. Apheresis involves…
2020 American Transplant Congress
ABH Subtype-Specific Tolerance after ABO-Mismatched Hematopoietic Cell Transplantation
B. Motyka¹, A. Halpin¹, J. Pearcey¹, A. Kariminia², A. Halevy², S. Maier¹, A. Halevy², P. Subrt², C. W. Cairo¹, G. D. Cuvelier³, K. R. Schultz², L. J. West¹
¹Alberta Transplant Institute, University of Alberta, Edmonton, AB, Canada, ²British Columbia Children’s Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada, ³CancerCare Manitoba, University of Manitoba, Winnipeg, MB, Canada
*Purpose: ABO-mediated immunity is reported to have minimal detrimental impact after ABO-mismatched hematopoietic cell transplantation (HCT). Patients are generally presumed ‘tolerant’ with regard to ABO.…
2020 American Transplant Congress
Risk Factors for Losing Varicella Immunity after Pediatric Kidney Transplantation
H. Pizzo¹, J. Mirocha², J. Garrison¹, P. R. Soni³, S. Nadipuram³, D. Puliyanda¹
¹Pediatric Nephrology, Cedars-Sinai Medical Center, Los Angeles, CA, ²Biostatistics Core, Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, ³Pediatric Infectious Disease, Cedars-Sinai Medical Center, Los Angeles, CA
*Purpose: Vaccination against varicella zoster (VZV) pre-kidney transplant (kid tx) can help prevent severe disseminated VZV disease in immunosuppressed patients (pts) post-tx. Despite confirmation of…
2020 American Transplant Congress
Outcomes of a Pre-Transplant Desensitization Protocol with Carfilzomib, Plasmapheresis, and IVIG for Broadly Sensitized Lung Transplant Candidates: A Case Series
S. Fredrick¹, C. Iasella², C. Moore¹, M. Mangiola³, Q. Xu³, C. Ensor⁴, D. Riciutti², C. LaFratte², P. Sanchez³, M. Morrell³, J. McDyer³, A. Zeevi³
¹Department of Pharmacy, UPMC Presbyterian, Pittsburgh, PA, ²University of Pittsburgh School of Pharmacy, Pittsburgh, PA, ³University of Pittsburgh School of Medicine, Pittsburgh, PA, ⁴Department of Pharmacy, AdventHealth, Orlando, FL
*Purpose: The presence of anti-human leukocyte antigen (HLA) antibodies in lung transplant candidates leads to increased wait list times and antibody-mediated rejection (AMR) post-transplant. We…
2020 American Transplant Congress
Marginal Zone B Cells Support Donor-Specific Alloantibody Responses to Heart Allografts
V. Gorbacheva, R. Fan, W. Baldwin, R. Fairchild, A. Valujskikh
Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
*Purpose: Production of high affinity isotype-switched donor specific alloantibodies (DSA) after transplantation is associated with germinal center formation by follicular (FO) B cells whereas the…
2019 American Transplant Congress
Variable Glycosylations of Anti-HLA Antibodies Detected with Single Antigen Beads in Kidney Transplant Recipients
Y. Chang¹, N. Lemp², J. Cicciarelli¹, T. Shah³, D. Min⁴
¹Mendez National Institute of Transplantation Foundation, Los Angeles, CA, ²Transplantation Research, Mendez National Institute of Transplantation Foundation, Los Angeles, CA, ³St. Vincent Medical Center, Los Angeles, CA, ⁴Western Univ of Health Sciences, Pomona, CA
*Purpose: Differential glycosylation of Immunoglobulin G (IgG) is known to affect its effector functions by modulating interactions with its binding partners, such as C1q or…
2019 American Transplant Congress
Anti-Donor M H C Class I I Alloantibody Induce Glomerular Injury in Mouse Renal Allografts Subjected to Prolonged Cold Ischemia
V. Gorbacheva, R. Fan, A. Beavers, R. Fairchild, W. Baldwin, A. Valujskikh
Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
*Purpose: Prolonged cold ischemia storage (CIS) of donor transplants is a major risk factor for acute and chronic graft tissue injury.The goal of this study…
2019 American Transplant Congress
IgG Glycosylation Causes Podocyte Injury in Transplant Glomerulopathy through Calcium Calmodulin Kinase IV
R. Bhargava, K. Maeda, M. Pavlakis, G. Tsokos
Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
*Purpose: Transplant glomerulopathy(TG) is a major cause of late allograft loss. Increase in urine podocin/creatinine ratio in TG signifies acceleration of podocyte detachment from glomerular…
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,…