ATC Abstracts

American Transplant Congress abstracts

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Articles tagged "T cell reactivity"

  • 2016 American Transplant Congress

    Ischemia Reperfusion Induced Murine Heart Transplant Rejection Is Complement Dependent.

    N. Chun,1 M. Zhang,2 R. Fairchild,3 P. Heeger.1

    1Medicine, Icahn School of Medicine at Mount Sinai, NY, NY; 2Anesthesia, SUNY Downstate, NY, NY; 3Immunology, Cleveland Clinic, Cleveland, OH.

    Increased posttransplant ischemia reperfusion injury (IRI) prevents costimulatory blockade induced heart graft survival but mechanisms linking innate and adaptive immunity are poorly understood. Based on…
  • 2016 American Transplant Congress

    Investigating Posttransplant Allo-Donor Specific CD57+ Cells in Patients with Alemtuzumab Induction and Belatacept-Based Regimen.

    H. Xu, F. Feng, A. Kirk.

    Department of Surgery, Duke University, Durham, NC.

    Recent studies have showed correlation between CD4+CD57+PD1- cells and costimulation blockade resistant rejection (CoBRR) in patients treated with belatacept without depletional induction. We have recently…
  • 2016 American Transplant Congress

    Post-Transplant T-Cell Alloreactive Perturbation Precedes the Advent of Humoral Immunity in Kidney Transplant Patients.

    E. Crespo,1 S. Luque,1 J. Cruzado,2 E. Melilli,2 J. Grinyo,2 M. Lucia,1 O. Bestard.2

    1Experimental Nephrology Laboratory, IDIBELL, Barcelona, Spain; 2Kidney Transplant Unit, Bellvitge University Hospital, Barcelona, Spain.

    Subclinical inflammation in kidney allografts is associated with worse outcome and the activation of humoral alloimmunity. Surveillance allograft biopsies are an accurate tool to diagnose…
  • 2015 American Transplant Congress

    Leukocyte Associated Immunoglobulin-Like Receptor 1 inhibits Th1 But Enhances Th17 Responses

    V. Agashe,1 M. Keller,2 L. Haynes,1 E. Jankowska-Gan,1 J. Sullivan,1 J. Kernien,1 H. Suzuki,3 D. Wilkes,4 W. Burlingham.1

    1Surgery, UW Madison, Madison, WI; 2Tulane University, New Orleans, LA; 3Chiba Graduate School of Medicine, Chiba, Japan; 4Indiana University School of Medicine, Indianapolis, IN.

    Background: Leukocyte Associated Immunoglobulin-like Receptor 1 (LAIR1), is a transmembrane receptor expressed by immune cells. It recognizes collagen repeats via its extracellular domain and has…
  • 2015 American Transplant Congress

    B Cell Depletion With an Anti-CD20 Antibody Enhances Alloreactive Memory T Cell Response After Transplantation

    J. Marino, P. Crosby Bertorini, J. Paster, A. Trowell, K. Briggs, L. Maxwell, G. Benichou.

    Surgery Department, Center for Transplantation Sciences, Massachusetts General Hospital / Harvard Medical School, Boston, MA.

    Pre-transplant B cell depletion in NHP with Rituximab (IgG1 anti-CD20 mAb) combined with cyclosporin A has been shown to promote the survival of islets allografts.…
  • 2015 American Transplant Congress

    Induction of a Costimulation-Susceptible Repertoire: A Case for Depletional Prior to Belatacept

    H. Xu,1 K. Samy,1 A. Guasch,2 S. Mead,2 A. Kirk.1

    1Surgery, Duke University, Durham, NC; 2Transplant Center, Emory University, Atlanta, GA.

    Belatacept offers highly specific costimulation blockade to prevent recipient alloimmune responses with reduced toxicity. However, when applied with nondepletional induction therapy belatacept-based regimens have higher…
  • 2015 American Transplant Congress

    Vaccine-Induced 'Incognito' CD8+ T Cell Memory Can Disrupt Transplantation Tolerance

    M. Nelsen,1 K. Beard,2 R. Kedl,1 R. Gill.2

    1Dept of Immunology & Microbiology, Univ of Colorado, Aurora, CO; 2Dept of Surgery, Univ of Colorado, Aurora, CO.

    Transplant recipients harbor immunity to vaccines and pathogens (e.g. CMV, EBV). Pre-existing immunity can have significant antigen-specific ramifications, usually attributed to heterologous immunity, as pathogen-reactive…
  • 2015 American Transplant Congress

    MDSC Derived from iPS Cells Regulate the CD8 T Cell Response In Vivo

    D. Joyce,1 M. Morita,2 X.-K. Li,3 J. Fung,1 S. Qian,1,2 L. Lu.1,2

    1General Surgery, Digestive Disease Institute; 2Immunology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH; 3Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan.

    Myeloid derived suppressor cells (MDSC) may represent a therapeutic tool for inducing tolerance in transplantation and autoimmune disorders. MDSC propagated from bone marrow (BM) can…
  • 2015 American Transplant Congress

    Anti-Donor T-Cell Immunity Is a Continuum Immune Process Favouring Subclinical Rejection After Kidney Transplantation

    E. Crespo,1 M. Lucia,1 J. Cruzado,1,2 S. Luque,1 E. Melilli,2 A. Manonelles,1,2 N. Sala,2 J. Grinyó,1,2 O. Bestard.1,2

    1Experimental Nephrology Laboratory, IDIBELL, Barcelona, Spain; 2Nephrology Department and Renal Transplant Unit, Bellvitge University Hospital, Barcelona, Spain.

    Subclinical T-cell mediated rejection (sc-TCR) accounts for a major cause of kidney allograft loss and is unexpectedly found in a rather important number of protocol…
  • 2015 American Transplant Congress

    Relative In Vitro Immunoregulatory Effects of Everolimus, Sirolimus, Tacrolimus, Mycophenolic Acid and Drug Combinations

    J. Mathew, X. Huang, J. Leventhal, L. Gallon, J. Miller, J. Levitsky.

    Surgery - Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, IL.

    Everolimus (EVL) is a modified form of the mTOR-inhibitor Sirolimus (SRL) and is used clinically in combination with Mycophenolate (MMF) and/or Tacrolimus (TAC). The purpose…
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