Abstracts Archive - Page 665 of 1683 - ATC Abstracts

2019 American Transplant Congress
Circulating Exosomes with Cardiac Self-Antigens (Cardiac Myosin and Vimentin) and De Novo Development of Antibodies to Cardiac Self-Antigens Precedes Chronic Cardiac Allograft Rejection
R. Ravichandran, Y. Itabashi, W. Liu, T. Mohanakumar
Norton Thoracic Institute, St. Joseph’s Hospital and Medical Center, Phoenix, AZ
*Purpose: The aim of the study is to determine the kinetics of induction of circulating exosomes with cardiac self-antigens (SAgs), cardiac myosin (MYO) and Vimentin…
2019 American Transplant Congress
Role of RIPK3 in Chronic Rejection Following Human Lung Transplantation
S. Angara, R. Ravichandran, H. Sodawalla, M. Smith, R. Bremner, T. Mohanakumar
Norton Thoracic Institute, St. Joseph’s Hospital and Medical Center, Phoenix, AZ
*Purpose: Immunological mechanisms leading to chronic rejection, bronchiolitis obliterans syndrome (BOS), following human lung transplantation remains unclear though a strong correlation have been identified between…
2019 American Transplant Congress
Novel Insights into Blocking the IL-6 / IL-6 Receptor Pathway after Pig Kidney Xenotransplantation in Baboons
H. Hara¹, G. Zhang¹, H. Iwase¹, T. Yamamoto¹, D. Ayares², D. E. Eckhoff¹, D. K. Cooper¹
¹Surgery, University of Alabama at Birmingham, Birmingham, AL, ²Revivicor Inc., Blacksburg, VA
*Purpose: IL-6 plays an important role in inflammation. The aims of the study were (i) to measure IL-6 in serum in baboons that received IL-6…
2019 American Transplant Congress
Indicators of Impending Pig Organ Xenograft Failure: Relevance to Clinical Xenotransplantation
H. Iwase¹, A. Jagdale¹, T. Yamamoto¹, G. Zhang¹, Q. Li¹, J. Foote¹, D. Ayares², H. Hara¹, D. K. Cooper¹
¹University of Alabama at Birmingham, Birmingham, AL, ²Revivicor, Inc., Blacksburg, VA
*Purpose: In pig-to-baboon organ xenotransplantation, coagulation dysfunction and inflammation have been suggested to be associated with acute humoral xenograft rejection. We have evaluated platelet counts,…
2019 American Transplant Congress
Graft-Infiltrating Regulatory T Cells Are Associated with Long Term Cardiac Xenograft Survival
A. K. Singh¹, G. Braileanu¹, A. Hersfield¹, L. DiChiacchio¹, T. Zhang¹, I. Tatarov¹, D. Parsell¹, B. Lewis¹, F. Sentz¹, D. Ayares², M. Mohiuddin¹
¹Department of Surgery, School of Medicine, University of Maryland Baltimore, Baltimore, MD, ²Revivicor, Inc, Blacksburg, VA
*Purpose: Regulatory T (CD4+CD25HiFoxP3+) cells (Treg) are a very small subset of CD4+ T cells that have been shown to play an important role in…
2019 American Transplant Congress
TMA Development in Kidney and Heart Xenografts Treated with Anti-CD40 or Anti-CD154 Antibodies
D. H. Ma¹, H. Sasaki¹, J. M. O¹, K. Ahrens¹, D. Becerra¹, C. G. Rickert¹, D. M. Detelich¹, T. Oura¹, W. Somer¹, I. Rosales², R. N. Pierson¹, J. Markmann¹, J. C. Madsen¹, T. Kawai¹
¹Surgery, MGH, Boston, MA, ²Pathology, MGH, Boston, MA
*Purpose: Genetically modified Galactose-α 1,3-galactose knockout transgenic swine expressing human CD55 (GTKO.hCD55) are resistant to hyperacute rejection of xenografts. We compare anti-CD154 and anti-CD40 antibody-based…
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
Xenorejection of Porcine Islets in Humanized Mice is Dominated by a Human Th17 Cytokine Immune Response
F. T. Lee¹, A. Dangi², M. Burnette², B. Hering³, X. Luo²
¹Transplant Surgery, Northwestern University, Chicago, IL, ²Nephrology, Duke University, Durham, NC, ³Diabetes Institute, University of Minnesota, Minneapolis, MN
*Purpose: We have previously shown that interleukin(IL)-17 producing CD4 T cells (Th17 response) dominate in the early anti-donor immune responses of a pig-to-mouse xenogeneic model…
2019 American Transplant Congress
Prevention of Islet Allo- and Xenograft Rejection with Immunoglobulin M Immunotherapy
M. Ma, P. Chhabra, K. Brayman
Surgery, University of Virginia, Charlottesville, VA
*Purpose: To investigate if IgM therapy mitigates islet allo- and xenotransplant rejection and promotes permanent islet survival.*Methods: 1) New onset diabetic NOD mice (n=14) were…
2019 American Transplant Congress
Investigation and Regulation of Induced Anti-Pig Antibody Production in GTKO Pig-to-Cynomolgus Monkey Artery Retransplantation
S. Hurh¹, E. Lee¹, J. Jeong², G. Lee¹, S. Park¹, S. Ahn³, S. Min³, C. Ahn⁴
¹Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea, Republic of, ²Department of Nephrology, Ajou University School of Medicine, Suwon, Korea, Republic of, ³Department of Surgery, Seoul National University Hospital, Seoul, Korea, Republic of, ⁴Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea, Republic of
*Purpose: Although the recent progress in xenograft survival in pig-to-nonhuman primate heart and kidney transplantation, little is known about retransplantation in pig antigen-sensitized recipient. This…