Abstracts Archive - Page 457 of 1683 - ATC Abstracts

2020 American Transplant Congress
The Effect of Undernutrition and Immunosuppression on Cytomegalovirus Specific T Cell Responses
E. David¹, M. Zhu², W. Parker², N. MacIver¹, A. D. Kirk², E. T. Chambers¹
¹Pediatrics, Duke University, Durham, NC, ²Surgery, Duke University, Durham, NC
*Purpose: Cytomegalovirus (CMV) infection remains a significant issue in transplantation, especially in those who are undernourished. While undernutrition is associated with impaired T cell immunity…
2020 American Transplant Congress
PD-1 Signals Murine and Human Treg for Enhanced Migration
W. Piao¹, Y. Xiong¹, L. Li¹, K. Hippen², Y. Zhang², V. Saxena¹, C. Paluskievicz¹, M. WillsonShirkey¹, B. Blazar³, L. Riella⁴, J. Bromberg⁵
¹Surgery, U of Maryland, Baltimore, MD, ²U of Minnesota, Minneapolis, MN, ³Surgery, U of Minnesota, Minneapolis, MN, ⁴Harvard U, Boston, MA, ⁵Surgery and Microbiology and Immunology, U of Maryland, Baltimore, MD
*Purpose: Programmed death-1 (PD-1) attenuates immune responses. Engagement of PD-1 by its ligands PD-L1 or PD-L2 regulates T cell development, proliferation, cytokine production, and apoptosis.…
2020 American Transplant Congress
Lack of Dj-1 Amplifies Sepsis-Associated Acute Kidney Injury and Increases Parenchymal Apoptosis
J. Leeds¹, Y. Scindia², E. Ghias¹, S. Cechova¹, V. Loi¹, E. Mandziak¹, S. Swaminathan¹
¹University of Virginia, Charlottesville, VA, ²University of Florida, Gainesville, FL
*Purpose: Sepsis following kidney transplantation is a frequent complication due to mandatory immunosuppression and increased infection risk. Kidney transplant recipients who develop sepsis show inferior…
2020 American Transplant Congress
Decreased Anti-Tumor Activity of Liver-Resident NK Cells via IL-33 Associated with Portal Hypertension after Living Donor Liver Transplantation
Y. Imaoka, M. Ohira, K. Sato, H. Ohdan
Hiroshima Uni., Hiroshima, Japan
*Purpose: It has been reported that increasing portal vein pressure after living donor liver transplantation (LDLT) was associated with a poor prognosis, risk factors for…
2020 American Transplant Congress
Tolerant Liver Transplant Patients Have Higher Level of Y RNA Fragments in the Circulation
C. Kuscu¹, A. Wolen¹, A. Bajwa¹, C. Kuscu¹, J. Eason², B. Ramaswami³, D. Maluf¹, G. Mazariegos³, G. Chalasani³, V. Mas¹
¹Transplant Research Institute, James D. Eason Transplant Institute, Department of Surgery, University of Tennessee Health Science Center, Memphis, TN, ²James D. Eason Transplant Institute, Department of Surgery, University of Tennessee Health Science Center, Memphis, TN, ³Thomas E. Starzl Transplantation Institute, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA
*Purpose: Tolerance post transplantation continue to be the ultimate goal in transplantation. Circulating small RNAs are one of the best candidates for biomarker studies. To…
2020 American Transplant Congress
Alum Elicited MDSCs Delay the Rejection of Fully Mistmatched Islets in Mice
A. Cuenca¹, N. Feeney², J. Ge¹, K. Deng², Q. Fu², G. Huai², K. Lee², C. Rickert², J. Markmann²
¹Boston Children's Hospital, Boston, MA, ²Massachusetts General Hospital, Boston, MA
*Purpose: Myeloid derived suppressor cells (MDSCs) have been demonstrated to be critical for the induction of tumor induced T cell tolerance and have also been…
2020 American Transplant Congress
Inducing Donor MHC Chimerism with Bone Marrow Derived Exosomes in Non-Human Primates
P. M. Patel¹, B. A. Gonzalez Nolasco¹, J. A. Morrissette¹, A. Prunevieille¹, K. J. Ahrens¹, J. M. O¹, D. C. Becerra¹, G. Benichou¹, J. C. Madsen²
¹Surgery, Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, ²Surgery, Center for Transplantation Sciences, Division of Cardiac Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA
*Purpose: Cardiac allograft tolerance in non-human primates (NHPs) has been achieved by our group via hematopoietic mixed chimerism consisting of an allogeneic bone marrow (BM)…
2020 American Transplant Congress
Graphene Quantum Dots Prevent Glomerular and Interstitial Injury in Murine Adriamycin Nephropathy Through Macrophage Depletion
Y. Kim¹, K. Kim¹, J. Lee¹, J. Moon¹, J. Kim¹, J. Lee², Y. Kim¹, S. Yang¹
¹Internal Medicine, Seoul National University Hospital, Seoul, Korea, Republic of, ²Internal Medicine, Nephrology Clinic, National Cancer Center, Seoul, Korea, Republic of
*Purpose: Macrophage infilatration is a key feature of the pathogenicity associated with glomerular and tubulo-interstitial injury in kidney disease. Graphene quantum dots (GQDs) are considered…
2020 American Transplant Congress
Dissecting Humoral Alloimmune Sensitization: A Dynamic Interplay of Different Cellular Compartments
A. Torija, A. Favà, E. Crespo, M. Jarque, M. Meneghini, N. Bolaños, J. Grinyo, O. Bestard
Kidney transplantation Unit, Bellvitge University Hospital- IDIBELL, L'Hospitalet de Llobregat. Barcelona, Spain
*Purpose: Humoral alloimmune memory is the main barrier for successful transplantation and is generated by a complex and compartmentalized B-cell immune response. Understanding the role…
2020 American Transplant Congress
Flow Cytometric Characterization of Regulatory Cell Populations Expanded Ex Vivo from PBMCs of Kidney Transplant Recipients
S. Tripathi¹, P. L. Martin-Moreno², G. J. Kavalam¹, A. Chandraker¹
¹Renal, Brigham and Women's Hospital, Boston, MA, ²Nephrology, Clinica Universidad de Navarra, Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, Spain
*Purpose: We have previously shown that it is possible to generate alloantigen-specific regulatory T cell lines and clones that prolong allograft survival upon infusion in…