ATC Abstracts

American Transplant Congress abstracts

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Articles tagged "FACS analysis"

  • 2021 American Transplant Congress

    Adenovirus-Specific T Cells for Steering of Immunosuppression After Pediatric Kidney Transplantation in the Randomized Controlled Ivist Trial

    T. Ahlenstiel-Grunow1, X. Liu2, R. Schild3, J. Oh3, C. Taylan4, L. T. Weber4, H. Staude5, M. Verboom6, C. Schröder7, R. Sabau7, A. Großhennig2, L. Pape1

    1Pediatrics II, University Hospital of Essen, Essen, Germany, 2Institute of Biostatistics, Hannover Medical School, Hannover, Germany, 3Pediatric Nephrology, University Hospital Hamburg-Eppendorf, Hamburg, Germany, 4Pediatric Nephrology, University of Colgne, Köln, Germany, 5Pediatric Nephrology, University Hospital of Rostock, Rostock, Germany, 6Institute of Transfusion Medicine and Transplant Engineering, Hannover Medical School, Hannover, Germany, 7Institute for Clinical Pharmacology, Hannover Medical School, Hannover, Germany

    *Purpose: Pharmacokinetic monitoring alone is insufficient to estimate the intensity of immunosuppression after pediatric kidney transplantation (Tx). Levels of virus-specific T cells (Tvis) have been…
  • 2020 American Transplant Congress

    CD56DimCD16Bright NK Cells from Kidney Transplant Recipients with Antibody-Mediated Rejection Display Increased Proliferation, Self-Renewal, Pro-Inflammatory and Cytotoxic Profile

    E. A. Bailly1, K. Louis1, C. Macedo1, B. Ramaswami1, M. Lucas1, A. Zeevi1, C. Lefaucheur2, D. Metes1

    1Department of Surgery, Thomas E. Starzl Transplantation Institute, Pittsburgh, PA, 2INSERM UMR-S976. Endothelium, Inflammation & Alloreactivity, Université de Paris, France

    *Purpose: Contribution of NK cells to antibody-mediated rejection (ABMR) injuries have recently been highlighted through transcriptomic analysis and immunohistochemistry of kidney and heart allograft biopsies.…
  • 2020 American Transplant Congress

    Use of Subunit Herpes Zoster Vaccine in VZV-Seronegative Transplant Recipients to Prevent Primary Varicella

    A. G. L'Huillier1, V. H. Ferreira2, C. Hirzel3, M. Ierullo2, T. Ku2, N. Selzner2, J. Schiff2, J. Tikkanen2, C. Miao4, D. S. Schmid4, A. Humar2, D. Kumar2

    1HUG, Geneva, Switzerland, 2UHN, Toronto, ON, Canada, 3Inselspital, Bern, Switzerland, 4CDC, Atlanta, GA

    *Purpose: Varicella-zoster virus (VZV) primary infection can be prevented by using the live varicella vaccine. However, this is contraindicated after organ transplant. We investigated the…
  • 2020 American Transplant Congress

    Evaluation of Pre-Transplant T Cell Exhaustion as a Mechanism for Immune Dysfunction and Recipient Risk of Death Following Liver Transplant

    K. E. Lunsford1, N. Aware2, K. Cleveland3, D. T. Nguyen4, E. A. Graviss4, L. J. Minze3, T. N. Eagar4, X. C. Li3, R. M. Ghobrial3

    1Department of Surgery, Rutgers New Jersey Medical School, Newark, NJ, 2Department of Surgery, Houston Methodist Hosptial, Houston, TX, 3Department of Surgery, Houston Methodist Hospital, Houston, TX, 4Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, TX

    *Purpose: Cirrhosis-related immune dysfunction likely contributes to early mortality following liver transplant (LT) resulting from infections. We previously identified a pre-transplant biomarker panel for immune…
  • 2020 American Transplant Congress

    Enumeration of Platelets by Flow Cytometry Reveals Human Erythrocyte Fragmentation During Pig Organ Xenoperfusion Studies

    Z. Abady1, K. M. Petitpas1, L. Burdorf1, S. G. Pratts1, B. M. Cerel1, S. Sendil2, M. R. Connolly1, W. Qin3, Y. Kan3, J. Layer3, M. Youd3, W. Westlin3, L. Yang3, R. N. Pierson III1, A. M. Azimzadeh1

    1Surgery, Massachusetts General Hospital and Harvard School of Medicine, Boston, MA, 2Surgery, University of Maryland School of Medicine, Baltimore, MD, 3eGenesis, Cambridge, MA

    *Purpose: Human or baboon platelet sequestration and activation occurs during pig organ xenograft perfusion, although the mechanism remains poorly understood. To evaluate an apparent “rebound”…
  • 2020 American Transplant Congress

    Donor-Specific B Cell Frequency Assessed by a Novel Multiplex Bead-Based Assay Predicts Graft Failure in Kidney Transplant Recipients

    Z. Ilyas, A. Akl, D. Pinelli, L. Gallon, A. R. Tambur, M. Ansari

    Northwestern University Feinberg School of Medicine, Chicago, IL

    *Purpose: Kidney transplant recipients with sensitization to HLA defined by a high percentage of Panel Reactive Antibodies (PRA) or Donor-specific anti-HLA antibodies (DSA) are at…
  • 2020 American Transplant Congress

    Novel Flow-Based Assay to Detect Allospecific T Cells in Transplantation Study

    N. Tanimine1, B. E. Burrel2, J. Pardo2, C. Rickert3, K. M. Lee3, K. Deng3, N. Feeney3, C. Leguern3, J. F. Markmann3

    1Department of Gastroenterological and Transplantation Surgery, Hiroshima University, Hiroshima, Japan, 2Immune Tolerance Network, Bethesda, MD, 3Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA

    *Purpose: Identifying and phenotyping donor-reactive T cells in recipients following transplantation may further the understanding of interactions between the recipient’s immune system and donor antigen.…
  • 2020 American Transplant Congress

    Examination of the TIGIT/CD226 Axis in Kidney Transplant Recipients

    G. J. Kavalam, A. D. Desai, A. Chandraker, S. Tripathi

    Renal, Brigham and Women's Hospital, Boston, MA

    *Purpose: The T-cell immunoglobulin and immunoreceptor tyrosine-based inhibitory motif domain (TIGIT) and CD226, two poliovirus receptor-like proteins, are an emerging group of immune checkpoints with…
  • 2019 American Transplant Congress

    Novel Flow-Based Assay to Identify Allo-Specific T Cell Exhaustion

    N. Tanimine1, C. Rickert1, K. Lee1, K. Deng1, N. Feeney1, C. Leguern1, B. Burrell2, J. Markmann1

    1Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, 2Immune Tolerance Network, Bethesda, MD

    *Purpose: A recent, multi-center immunosuppression withdrawal trial in liver transplant recipients unexpectedly revealed time post-transplant as an important predictor for operational tolerance. We hypothesize that…
  • 2019 American Transplant Congress

    Extracorporeal Photopheresis for Specific Immune Tolerance Responses in Heart Transplant Recipients

    M. J. Barten1, K. Klaeske2, J. Wittke2, M. Borger2, J. Garbade2, S. Lehmann3, H. Reichenspurner1, M. Dieterlen2

    1Cardiovascular Surgery, University Heart Center, Hamburg, Germany, 2Cardiac Surgery, University Heart Center Leipzig, Leipzig, Germany, 3Cardiacr Surgery, University Heart Center Leipzig, Leipzig, Germany

    *Purpose: Extracorporeal photopheresis (ECP) treatment following heart transplantation (HTx) may induce transplant tolerance. A monitoring tool for successful ECP treatment would allow determination of patient-specific…
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