Am J Transplant, Volume 21, Suppl 3 Archives - Page 42 of 139 - ATC Abstracts

2021 American Transplant Congress
The Microenvironment of Belatacept-Resistant Rejection
A. Johnson, J. Zhang, C. Larsen
Surgery, Emory University, Atlanta, GA
*Purpose: Belatacept is a co-stimulation blockade immunosuppressant, that despite demonstrating improved long-term outcomes, has not been widely adopted, in part, due to concern over early…
2021 American Transplant Congress
Quantifying Hidden Sensitization: HLA-reactive Memory B Cells in the Spleens of Sensitized Women
J. T. Killian¹, J. A. Houp¹, A. Nellore², R. G. King³, P. M. Porrett¹, F. E. Lund³
¹Department of Surgery, University of Alabama at Birmingham School of Medicine, Birmingham, AL, ²Department of Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, AL, ³Department of Microbiology, University of Alabama at Birmingham School of Medicine, Birmingham, AL
*Purpose: Measurement of circulating anti-HLA antibody (anti-HLA-Ab) in transplant candidates and recipients is required for successful organ transplantation. However, serum Ab measurement alone likely underestimates…
2021 American Transplant Congress
Harnessing Innate Lymphoid Cells to Prevent Graft-versus Host Disease
K. T. Reid¹, S. Q. Crome²
¹Immunology, University of Toronto, Toronto, ON, Canada, ²Ajmera Transplant Centre, TGHRI, University Health Network, Toronto, ON, Canada
*Purpose: Determine whether human innate lymphoid cells (ILCs) can be isolated, expanded and used in cell-based therapies to prevent Graft-versus Host Disease (GvHD) .*Methods: ILC2s…
2021 American Transplant Congress
Urinary Exosomal Cystatin C and Lipopolysaccharide Binding Protein as Biomarkers for Monitoring Antibody-mediated Rejection After Kidney Transplantation
M. Kim, S. Lim, S. Shin
Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea, Republic of
*Purpose: This study aims to discover and validate urinary exosomal biomarkers for antibody-mediated rejection (ABMR) after kidney transplantation.*Methods: A total of 60 urine samples from…
2021 American Transplant Congress
P2X7 Receptor Activity Mediates Th17-Specific Self- and Alloreactivity in Non-Human Primates
C. Little, J. Sullivan, W. Burlingham, D. Kaufman
Department of Surgery, University of Wisconsin, Madison, WI
*Purpose: The broadly expressed ATP-binding purinergic receptor, P2X7 (P2X7R) is involved in the Th17 mediated cellular immune response to allo- and select self-antigens (Collagen type…
2021 American Transplant Congress
Donor T and NK Cells with a Special Tissue-Resident Memory Phenotype Migrate Into the Periphery of Lung Transplant Recipients – A Potential Feature for Tolerance Development
L. M. Ruhl¹, R. Bellmàs Sanz¹, A. Hitz¹, B. Wiegmann², K. A. Bläsing¹, W. Sommer², F. Ius², J. F. Kühne¹, A. Knöfel², L. M. Horn¹, I. Tudorache², A. Haverich², D. Jonigk³, G. Warnecke², C. S. Falk¹
¹MHH, Institute of Transplant Immunology, Hannover, Germany, ²MHH, Department for Cardiothoracic, Transplantation and Vascular Surgery, Hannover, Germany, ³MHH, Institute of Pathology, Hannover, Germany
*Purpose: After lung transplantation (LuTx), a transient chimerism of donor cells exists in the blood of recipients due to the migration of lymphocytes from the…
2021 American Transplant Congress
HTFPI.hCD47 and Adhesion Inhibition in GTKO.hCD46 Pig Lung Xenograft Injury
S. Miura¹, L. Burdorf¹, Z. Habibabady¹, A. Dandro², M. Connolly¹, S. Pratts¹, C. Phelps², W. Eyestone², D. Ayares², A. Azimzadeh¹, R. Pierson III¹
¹Center for Transplantation Sciences, Massachusetts General Hospital, Charlestown, MA, ²Revivicor, Inc, Blacksburg, VA
*Purpose: We evaluate whether genetic expression of human tissue factor pathway inhibitor (TFPI, extrinsic coagulation pathway inhibitor) and human CD47 ("don’t eat me" immunoregulator), alone…
2021 American Transplant Congress
Effect of Defibrotide on Kidney Ischemia Reperfusion Injury in a Preclinical Renal Transplant Model
P. Pine¹, Z. Sun², A. Matas³, J. Shi¹, A. Ebrahimnejad¹, M. Zanette⁴, P. Halloran⁵, J. S. Bromberg⁶, R. Hanvesakul⁷
¹Jazz Pharmaceuticals, Palo Alto, CA, ²Johns Hopkins Medicine, Baltimore, MD, ³Univ of Minnesota, Minneapolis, MN, ⁴Jazz Pharmaceuticals, Philadelphia, PA, ⁵Univ of Alberta, Edmonton, AB, Canada, ⁶Univ of Maryland School of Medicine, Baltimore, MD, ⁷Jazz Pharmaceuticals, Oxford, United Kingdom
*Purpose: Ischemia reperfusion injury (IRI) is a major contributor to graft failure. During organ removal and preservation, ischemia results in anaerobic respiration and cellular damage.…
2021 American Transplant Congress
Determining Endpoint Criteria in Ex Vivo Normothermic Limb Perfusion (EVNLP)
S. K. Pandey¹, A. Meyers¹, P. Sadeghi¹, V. Kopparthy¹, T. Xia¹, H. Brunengraber², S. Dasarathy³, A. Rampazzo¹, B. Bassiri Gharb¹
¹Plastic Surgery, Cleveland Clinic, Cleveland, OH, ²Department of Nutrition, School of Medicine, Case Western Reserve University, Cleveland, OH, ³Department of Gastroenterology, Cleveland Clinic, Cleveland, OH
*Purpose: There are no established criteria for discontinuing EVNLP before irreversible muscle and endothelial cell damage occur. This study aimed to evaluate weight gain as…
2021 American Transplant Congress
Renal Tubular-cell-specific Urinary Extracellular Vesicles: A Novel Biomarker for Diabetic Nephropathy After Kidney Transplantation
N. Eguchi¹, H. Lau¹, F. Zaldivar², U. G. Reddy³, E. Tantisattamo³, A. Ferrey³, D. Dafoe¹, H. Ichii¹
¹Surgery, University of California Irvine, Orange, CA, ²Pediatric Execise and Genomics Research Center, University of California Irvine, Irvine, CA, ³Medicine, University of California Irvine, Orange, CA
*Purpose: Diabetes(DM) is a leading cause of ESRD among renal transplant recipients(RTRs). However, the kinetics of diabetic nephropathy recurrence after renal transplantation(RT) remains unclear. Currently,…