Articles tagged "Alloantigens"

2022 American Transplant Congress
“ABO-Adjusted CPRA”: A Unified Metric for Immunologic Compatibility in Kidney Transplantation
L. Gragert¹, M. Kadatz², J. Alcorn³, D. Stewart³, D. Chang², J. Gill², R. Liwski⁴, H. Gebel⁵, E. Kransdorf⁶, J. Gill², J. Lan²
¹Tulane University, New Orleans, LA, ²University of British Columbia, Vancouver, BC, Canada, ³UNOS, Richmond, VA, ⁴Dalhousie University, Halifax, NS, Canada, ⁵Emory University, Atlanta, GA, ⁶Cedars-Sinai, Beverly Hills, CA
*Purpose: Implementation of the kidney allocation system in 2014 greatly reduced access disparity due to HLA sensitization. To address persistent disparities among both candidate cPRA…
2022 American Transplant Congress
Fibroblastic Reticular Cell Subset Transcriptional Reprogramming Differs in Response to Immunity versus Tolerance
L. Li¹, Y. Song¹, M. Shirkey¹, A. Kensiski¹, W. Piao¹, V. Saxena¹, S. Gavzy¹, B. Ma¹, R. Abdi², J. Bromberg¹
¹UMB, Baltimore, MD, ²Harvard University, Boston, MD
*Purpose: Lymph node (LN) fibroblastic reticular cells (FRCs) are central contributors to the LN niche. We hypothesized that FRC subsets reactive to immunity versus tolerance…
2022 American Transplant Congress
cDC1-Mediated Prolongation of Cardiac Allograft Survival and Alloantigen Induced Transcriptional Programming
S. L. Schroth, E. B. Thorp
Pathology, Northwestern Feinberg School of Medicine, Chicago, IL
*Purpose: Heart transplantation is currently the only treatment for advanced stage heart failure. While patient survival after transplantation has improved acutely, the same cannot be…
2021 American Transplant Congress
Epigenetic & Functional Changes Associated with Alloreactive Memory CD8 T Cell Subsets in Liver Transplant Patients
H. Abdelsamed¹, S. Liu¹, M. Juya¹, D. Metes², F. Lakkis¹, A. Thomson¹
¹University of Pittsburgh Medical Center, Pittsburgh, PA, ²UPMC, Pittsburgh, PA
*Purpose: Donor-specific allo-reactive memory CD8 T cells play a pivotal role in allo-immunity and represent a major hurdle against tolerance induction in solid organ transplantation.…
2021 American Transplant Congress
Environmental Factors That Shape T-cell Alloimmunity: Role of the Microbiome
K. Janek¹, J. H. Fechner¹, R. A. Daley¹, K. Krautkamer¹, F. Rey², J. D. Mezrich¹
¹Surgery, University of Wisconsin School of Medicine & Public Health, Madison, WI, ²Bacteriology, University of Wisconsin, Madison, WI
*Purpose: Unlike other types of immunity, T-cell alloimmune responses to mismatched MHC proteins do not need priming by a previous exposure. While genetic differences between…
2021 American Transplant Congress
Ectopic Hepatocyte Transplantation Into the Lymph Nodes in a Fully Mismatched Allogeneic Dog Model Using Tacrolimus and Prednisone
P. A. Fontes
NA, LyGenesis, Pittsburgh, PA
*Purpose: Develop organogenesis through ectopic hepatocyte transplantation (HT) into the upper abdominal lymph nodes (LN).*Methods: Three groups of Mongrel dogs weighting between 25-35 kg (control…
2021 American Transplant Congress
Iguratimod Reduce Panel Reactive Antibody in High Mismatched Renal Transplant Recipients: A Retrospective Propensity Score-Matched Study
D. Feng, Z. Wang, Z. Han, J. Tao, X. Ju, R. Tan, M. Gu
The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
*Purpose: To evaluate the clinical efficacy and safety of iguratimod (IGU) for reducing panel reactive antibody (PRA) in high mismatched renal transplant recipients.*Methods: Eligible recipients…
2021 American Transplant Congress
hlaR,” a Simplified Interface for the HLA Matchmaker Tool
A. Johnson¹, J. Zhang¹, H. Gebel², C. Larsen¹
¹Surgery, Emory University, Atlanta, GA, ²Pathology, Emory University, Atlanta, GA
*Purpose: Functional epitopes, or eplets, represent a set of amino acids within three angstroms of one another that may not be sequentially contiguous but are…
2020 American Transplant Congress
Infectious Tolerance Depends Upon the ‘Exokine’ IL35
W. J. Burlingham¹, J. A. Sullivan¹, Y. Tomita², E. Jankowska-Gan¹, D. Lema¹, S. Hong³, D. A. Vignali⁴
¹Surgery, University of Wisconsin, Madison, WI, ²Surgery, Tokai University, Tokyo, Japan, ³Pharmacy, University of Wisconsin, Madison, WI, ⁴Immunology, University of Pittsburgh, Pittsburgh, PA
*Purpose: Interleukin-35 (IL35) is an immunosuppressive cytokine composed of Ebi3 and p35 subunits. Yet the form(s) that IL35 assumes and its role in infectious tolerance,…
2020 American Transplant Congress
Anticipated Observations: The Role of DQ Antigen Frequencies among Donors and Recipients in a Pediatric Renal Transplant Cohort
S. Gattis¹, R. George², R. Liverman³, A. Serluco³, R. Garro², J. Figueroa², R. A. Bray², H. M. Gebel², H. C. Sullivan²
¹Emory Healthcare, Atlanta, GA, ²Emory University School of Medicine, Atlanta, GA, ³Children's Healthcare of Atlanta, Atlanta, GA
*Purpose: Donor specific HLA antibodies (DSA) that develop in the face of donor-recipient HLA mismatches are well-established independent predictors of graft loss in solid organ…