Articles tagged "Leukocytes"

2019 American Transplant Congress
Leukopenia in Older Kidney Transplant Recipients is Associated with Decreased Allograft Survival and Increased Patient Survival
R. Rodriguez, A. Price, K. Soliman, R. Vinaya, D. Lazarus, M. Casey, M. Labonte, L. Erbe, M. Shearer, D. Taber, M. Posadas Salas
Transplant Nephrology, Medical University of South Carolina, Charleston, SC
*Purpose: Older kidney transplant recipients are vulnerable to side effects of immunosuppression (IS) including leukopenia. Providers often reduce MMF dose in response to leukopenia. This…
2019 American Transplant Congress
Leukopenia at the Time of Liver Transplantation: Medication Tolerance and Clinical Outcomes
E. Tiao¹, J. Casale¹, J. LaMattina², S. Hammad¹
¹Pharmacy, University of Maryland Medical Center, Baltimore, MD, ²Surgery, University of Maryland School of Medicine, Baltimore, MD
*Purpose: Leukopenia post-orthotopic liver transplant (OLT) is associated with an increased incidence of infection and mortality. Prior to OLT, leukopenia may suggest innate immunosuppression and…
2019 American Transplant Congress
ECDI-Treated Donor Leukocytes in Primate Cardiac Allograft Recipients
Z. Alikhassy Habibabady¹, T. Zhang², W. Sun², X. Cheng², L. Burdorf¹, I. Tatarov², S. Sendil², I. Behroozfard², B. Cerel¹, D. Parsell², R. N. Pierson III¹, X. Luo³, A. M. Azimzadeh¹
¹Surgery, Massachusetts General Hospital and Harvard School of Medicine, Boston, MA, ²Surgery, University of Maryland School of Medicine, Baltimore, MD, ³Duke Transplant Center, Duke University, Durham, NC
*Purpose: Ethyl carbodiimide (ECDI)-fixed donor leukocytes exhibit tolerogenic immunomodulation in murine models of autoimmunity and transplantation, and nonhuman primate islet transplantation. Here in pilot studies…
2019 American Transplant Congress
Inhibition of Sialidase Activity and Galectin Binding Reduces Xenogeneic Neutrophil-Endothelial Adhesion
B. M. Cerel¹, B. M. French², D. G. Harris², C. Laird², L. Burdorf¹, X. Cheng², C. Feng³, A. S. Cross⁴, S. E. Goldblum⁴, G. R. Vasta³, R. N. Pierson III¹, A. M. Azimzadeh¹
¹Deparment of Surgery, Massachusetts General Hospital, Boston, MA, ²Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, ³Department of Microbiology and Immunology, and Institute of Marine and Environmental Technology, University of Maryland School of Medicine, Baltimore, MD, ⁴Department of Medicine Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, MD
*Purpose: Immediate neutrophil sequestration occurs despite genetic modifications (Gal-a-1-3 galactosyl transferase knock out; human CD46 complement regulatory gene addition) to pig donor organs. Sialic acids…
2018 American Transplant Congress
Elucidating Novel Signatures of Allograft Rejection through Cytometry by Time of Flight (CyTOF) in Kidney Transplant Recipients
S. Eskandari,¹ B. Al Dulaijan,¹ J. Assaker,¹ L. Riella,¹ A. Kurdi,² J. Azzi.¹
¹Transplantation Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA; ²Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA.
Mass cytometry by time-of-flight (CyTOF) permits the simultaneous assessment of over 40 functional and phenotypic parameters at the single-cell level. This novel tool holds tremendous…
2018 American Transplant Congress
Targeting Lymphotoxin Signaling in Lymphatics Regulates Immune Sensitization, Elicitation, and Resolution
W. Piao, Y. Xiong, L. Li, V. Saxena, J. Bromberg.
UMB, MD.
Background:Contact hypersensitivity (CHS) is a T cell-mediated cutaneous inflammatory response which includes three phases of priming/sensitization, elicitation, and resolution,mirroring many aspects of allogeneic responses. The…
2017 American Transplant Congress
Novel Cell Intrinsic Role of the Adaptor Protein TSAd in Maintaining Alloimmune T Regulatory Cell Function.
J. Wedel,^1,2 M. Stack,^1,2 T. Seto,^1,2 M. Sheehan,^1,2 K. Liu,^1,2 E. Flynn,^1,2 D. Briscoe.^1,2
¹Transplant Research Program, Boston Children's Hospital, Boston; ²Department of Pediatrics, Harvard Medical School, Boston
TSAd is an SH2 domain containing intracellular adapter molecule that functions to elicit T cell receptor-mediated signals and cytokine production. TSAd knockout (KO) T cells…
2017 American Transplant Congress
Role of Chemokines in Resolution of BK Virus-Associated Nephropathy and Chronicity of Pathology Changes in Kidney Transplant Recipients.
J. Zuckerman, F. Palma Diaz, C. Magyar, B. Abdalla, E. Lum, S. Bunnapradist, T. Pham, G. Dannovitch, J. Veale, H. Gritsch, E. Reed, J. Schaenman.
David Geffen School of Medicine at UCLA, Los Angeles, CA
BK virus-associated nephropathy (BKN) remains the most common infectious cause of allograft loss after kidney transplantation. We previously demonstrated increased frequency of polyfunctional T cells…
2017 American Transplant Congress
IL-3 Contributes to Development of Basophil-Triggered Cardiac Allograft Fibrosis Development.
G. Schiechl-Brachner,¹ M. Rodriguez Gomez,¹ K. Renner,¹ S. Buchtler,¹ K. Schmidbauer,¹ D. Halbritter,¹ S. Neumayer,¹ Y. Talke,¹ H. Bruehl,² M. Mack.¹
¹Department of Internal Medicine II, University Hospital / Medical Center, Regensburg, Germany; ²Department of Internal Medicine I, University Hospital / Medical Center, Regensburg, Germany
Introduction: Organ fibrosis and vasculopathy are major causes of chronic cardiac allograft failure. Resident (donor-derived) fibroblasts are thought to be mainly responsible for excessive production…
2017 American Transplant Congress
Anti-HLA I Antibody Enhances Endothelial Cell-Induced Polarization of Human Monocytes to M2a/c-Like Macrophages.
X. Wei, N. Valenzuela, M. Rossetti, E. Reed.
Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
HLA antibody (Ab)-mediated rejection (AMR) is often characterized by graft-infiltrating macrophages, which correlate with tissue fibrosis. Recent studies suggest they may mainly represent M2-polarized macrophages.…