2020 American Transplant Congress
Determination of Programmed Cell Death Protein 1 (PD1) by Flow Cytometry, a Possible Follow-Up Tool in Renal Transplantation of High Immune Risk
*Purpose: Introduction: Currently, the follow-up of patients remains to be the serum creatinine level, being highly specific, however, with little sensitivity to determine the occurrence…2020 American Transplant Congress
B Cell Derived IL-1β and IL-6 Drive Homeostatic T Cell Recovery Following Lymphoablation
Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
*Purpose: T cell reconstitution after lymphoablation in allograft recipients may lead to acute rejection and poor graft outcome. Using a mouse model of heart transplantation…2020 American Transplant Congress
Memory T Cell-Mediated Rejection is Regulated by FcγRIIB Expression on CD8+ T Cells
*Purpose: Donor-reactive memory T cells represent a potent immunologic barrier to long-term graft survival and tolerance induction. To identify novel pathways that regulate memory T…2020 American Transplant Congress
Feasibility and Long Term Safety of T Regulatory Cell Therapy in Kidney Transplantation
*Purpose: A sequential clinical trial of autologous polyclonal T regulatory cellular therapy compared with a standardised reference cohort of live donor kidney transplant recipients. The…2020 American Transplant Congress
Effector Differentiation of Endogenous Antigen-Specific CD8+ T Cells is Selectively Limited by CTLA-4 Ig
Emory Transplant Center, Emory University School of Medicine, Atlanta, GA
*Purpose: Costimulation blockade with belatacept (CTLA-4 Ig) offers improved renal function and reduced toxicity following transplantation compared to calcineurin inhibitors. Nonetheless, episodes of acute T…2020 American Transplant Congress
Granulocyte-Colony Stimulating Factor (G-CSF) and Granulocyte-Macrophage CSF (GM-CSF) Administration Enriches for Highly Suppressive CD4+CD45RA–Foxp3hi Cells in Leukapheresis Products of Rhesus Monkeys
Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA
*Purpose: In humans, CD4+CD45RA-Foxp3hi T cells comprise a regulatory T cell (Treg) subset with highly suppressive function. We have previously shown that granulocyte-colony stimulating factor…2020 American Transplant Congress
Novel Insights Into High Alloantibody Production in CCR5 KO Recipient Mice
*Purpose: Antibody-mediated rejection (AMR) contributes to both early and late kidney allograft loss. Unfortunately, conventional immunosuppressants do not effectively control development of humoral alloimmunity in…2020 American Transplant Congress
Tissue Resident Memory T Cells in Mouse Renal Transplantation
1Starzl Transplantation Institute, Pittsburgh, PA, 2American University of Beirut, Beirut, Lebanon
*Purpose: The newly identified tissue resident subset of memory T cells (TRM) provides immune surveillance in the tissue and first response against infections. They are…2020 American Transplant Congress
Use of Subunit Herpes Zoster Vaccine in VZV-Seronegative Transplant Recipients to Prevent Primary Varicella
*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
Polyfunctional Cytokine Secreting Th17 Cells Preferentially Infiltrate Murine Renal Allografts with Acute Rejection and Are Associated with Elevated Th17: Treg Ratio
*Purpose: Our group has shown that renal transplant patients with acute rejection have elevated blood mRNA RORγt: FOXP3 ratio compared to patients with stable graft…
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