ATC Abstracts

American Transplant Congress abstracts

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Articles tagged "B cells"

  • 2019 American Transplant Congress

    B Cell Immunophenotypes in Transplantation

    M. Cascalho1, M. de Mattos-Barbosa2, E. A. Farkash3, J. L. Platt2

    1University of Michigan, Ann Arbor, MI, 2Surgery, University of Michigan, Ann Arbor, MI, 3Pathology, University of Michigan, Ann Arbor, MI

    *Purpose: B cells and B cell responses have been associated with favorable outcomes of transplantation in some setting and unfavorable outcomes in others. For example,…
  • 2019 American Transplant Congress

    Novel In Vitro Germinal Center Culture System Demonstrates More Aggressive B Cell to Plasma Blast Differentiation in Allosensitized Nonhuman Primates

    P. Schroder, J. Yoon, R. Schmitz, Z. Fitch, J. Kwun, S. J. Knechtle

    Department of Surgery, Duke University Medical Center, Durham, NC

    *Purpose: The allogeneic humoral immune response is largely composed of T cell dependent antibody responses produced after B and T cells interact within the germinal…
  • 2019 American Transplant Congress

    Anti CD45RB Antibody Therapy Attenuates Renal Ischemia Reperfusion Injury by Inducing Regulatory B Cells

    S. Lee1, S. Park1, J. Hwang1, J. Ryu2, T. Koo2, C. Ahn2, J. Yang3

    1Biomedical Research Institute, Transplantation Center, Seoul National University Hospital, Seoul, Korea, Republic of, 2Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea, Republic of, 3Department of surgery, Seoul National University Hospital, Seoul, Korea, Republic of

    *Purpose: Regulatory B cells (Bregs) are a new B cell subset that suppresses immune responses. Recently, both anti-CD45RB and anti-Tim-1 treatments have been found to…
  • 2019 American Transplant Congress

    TACI Polymorphisms Associated with Increased Alloimmunity and Allograft Rejection

    M. Garcia de Mattos-Barbosa1, E. A. Farkash2, J. L. Platt1, M. Cascalho1

    1Transplant Surgery, University of Michigan, Ann Arbor, MI, 2Pathology, University of Michigan, Ann Arbor, MI

    *Purpose: Transmembrane activator and CAML interactor (TACI) controls B cell differentiation. The TACI gene is highly polymorphic (>95% of all genes) and frequently variants exhibit…
  • 2019 American Transplant Congress

    Epstein Barr Virus DNA Integration in B Cell Lymphomas of Post-Transplant Lymphoproliferative Disorder

    M. C. McPherson, O. M. Martinez

    Surgery, Division of Abdominal Transplant, Stanford University School of Medicine, Stanford, CA

    *Purpose: Epstein Barr virus-positive (EBV+) B cell lymphomas can arise in immunosuppressed individuals, such as organ transplant recipients in the context of post-transplant lymphoproliferative disorder…
  • 2019 American Transplant Congress

    Role of MHC Class II in B Cell and Regulatory T Cell Development

    S. K. Germana, Z. Wang, C. A. Huang, L. Kojima, C. G. Rickert, J. F. Markmann, C. LeGuern

    Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA

    *Purpose: Therapies involving CD4 regulatory T cells (Tregs) are promising approaches to mitigate graft rejection and autoimmunity. Understanding of the activation mechanisms that initiate Treg…
  • 2019 American Transplant Congress

    BCMA Expression by Alloreactive B Cells Increases during De Novo Alloantibody Responses

    N. Chai, G. Wu, I. Kim, A. Klein, S. Jordan

    Comprehensive Transplant Center, Cedars-Sinai Med Ctr, Los Angeles, CA

    *Purpose: BCMA(TNFRSF17) belongs to tumor necrosis factor receptor superfamily. It is selectively expressed during B/plasma cell differentiation while being nearly absent on naive and memory…
  • 2019 American Transplant Congress

    A Step-Wise Desensitization Using Rituximab&Bortezomib Combined with Antithymocyte Globulin for Highly Sensitized Kidney Transplant Candidates

    H. Ohdan, K. Ide, M. Ohira, H. Tahara, Y. Tanaka

    Hiroshima University, Hiroshima, Japan

    *Purpose: In highly HLA sensitized patients, both memory B and T cells responding to donor-specific HLA in addition to plasma cells secreting anti-HLA Abs are…
  • 2019 American Transplant Congress

    Iguratimod Inhibits the Donor Specific Antibodies Production and Attenuates the Antibody Mediated Rejection in Rat Kidney Transplantation

    Z. Wang, M. Zheng, H. Chen, S. Li, Z. Han, J. Tao, X. Ju, R. Tan, M. Gu

    No.300 Guangzhou Road of Nanjing, Nanjing, China

    *Purpose: Our study was designed to investigate the efficacy and related mechanisms of Iguratimod (T-614) in the inhibition of DSAs following kidney transplantation.*Methods: A rat…
  • 2019 American Transplant Congress

    Treg-Lymphatic Crosstalk: Lymphotoxin Signals as Modulators of Immunity and Suppression

    W. Piao1, L. Li2, V. Saxena2, Y. Xiong2, C. Paluskievicz2, J. Bromberg3

    1Microbiology and Immunology, U. Maryland, Baltimore, baltimore, MD, 2Surgery, U. Maryland, Baltimore, Baltimore, MD, 3Surgery and Microbiology and Immunology, U. Maryland, Baltimore, Baltimore, MD

    *Purpose: Little is known about the molecular cues that regulate the entry of leukocytes across lymphatic vessels. Regulatory T cells (Treg) express high amounts of…
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