Abstracts Archive - Page 455 of 1683 - ATC Abstracts

2020 American Transplant Congress
Regulatory T Cell-Derived Amphiregulin Activates Fibroblasts to Promote Chronic Rejection after Heart Transplantation
L. Fan¹, X. Zhang¹, T. Li¹, L. R. Mathews¹, G. K. Dwyer², M. J. Calderon³, K. E. Helfrich³, M. A. Ross³, S. C. Watkins³, H. R. Turnquist¹
¹Surgery, University of Pittsburgh, Pittsburgh, PA, ²Immunology, University of Pittsburgh, Pittsburgh, PA, ³Center for Biologic Imaging, University of Pittsburgh, Pittsburgh, PA
*Purpose: Chronic rejection (CR) after organ transplantation (Tx) manifests as function-limiting allograft fibrosis and vasculopathy. Current immunosuppressants fail to prevent CR and insights into the…
2020 American Transplant Congress
A Novel Immunoresponse Monitoring System to Predict Chronic Antibody- Mediated Rejection in Kidney Transplant Recipients
N. Iwahara¹, K. Hotta¹, D. Iwami¹, Y. Takada¹, H. Higuchi², H. Sasaki², T. Tanabe², N. Shinohara¹
¹Hokkaido University, Sapporo, Japan, ²Sapporo City General Hospital, Sapporo, Japan
*Purpose: Chronic active antibody mediated rejection (CAAMR) induced by de novo donor specific antibodies (DSA) is the main cause of graft loss in the long-term.…
2020 American Transplant Congress
Examination of the TIGIT/CD226 Axis in Kidney Transplant Recipients
G. J. Kavalam, A. D. Desai, A. Chandraker, S. Tripathi
Renal, Brigham and Women's Hospital, Boston, MA
*Purpose: The T-cell immunoglobulin and immunoreceptor tyrosine-based inhibitory motif domain (TIGIT) and CD226, two poliovirus receptor-like proteins, are an emerging group of immune checkpoints with…
2020 American Transplant Congress
Undernutrition and Hypoleptinemia Modulate Cytomegalovirus Infection
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) viremia/infection remains a significant cause of morbidity in transplantation, especially in the undernourished population. Undernutrition and hypoleptinemia have been implicated in other…
2020 American Transplant Congress
Ikaros Regulates Macrophage Inflammation in Liver Ischemia-Reperfusion Injury: From Mouse-to-Human
K. Kadono¹, S. Kageyama¹, K. Nakamura¹, H. Hirao¹, H. Kojima¹, T. Ito¹, K. J. Dery¹, X. Li², R. W. Busuttil¹, F. Kaldas¹, J. W. Kupiec-Weglinski¹
¹Liver Transplant Surgery, UCLA, Los Angeles, CA, ²NIEHS, Durham, NC
*Purpose: Hepatic ischemia-reperfusion injury (IRI) represents a major risk factor for early allograft dysfunction and rejection episodes in liver transplantation (LT). The impact of Ikaros,…
2020 American Transplant Congress
Agonistic Anti-CD272 Antibody (6B2) Suppressed Donor Specific Antibody Through Inducible Regulatory T Cells
Y. Yamamoto¹, M. Uchiyama², K. Uchida³, H. Yagita⁴, M. Niimi¹
¹Surgery, Teikyo University, Tokyo, Japan, ²Cardiovascular Surgery, Teikyo University, Tokyo, Japan, ³Hepato- Biliary- Pancreatic Surgery, Juntendo University, Tokyo, Japan, ⁴Immunology, Juntendo University, Tokyo, Japan
*Purpose: The co-inhibitory receptor B and T lymphocyte attenuator (BTLA; CD272) is a coinhibitory molecule and may play an important role in alloimmune responses. We…
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
Analysis of the Mechanism of Liver-Resident NK Cells Activity via the Aryl Hydrocarbon Receptor
K. Sato, M. Ohira, Y. Imaoka, H. Ohdan
Department of Gastroenterological and Transplant Surgery, Hiroshima University, Hiroshima, Japan
*Purpose: Tumor recurrence is the main limitation of liver transplantation (LT) in patients with hepatocellular carcinoma (HCC). We previously reported an adoptive immunotherapy approach that…
2020 American Transplant Congress
Prolonged Functional Human 3D Liver Organoids as an In Vitro Liver Disease Model
W. Zhang¹, A. Isidan¹, A. M. Chen¹, L. J. Smith², H. L. Francis³, G. Alpini³, E. Gramelspacher¹, P. Li¹, B. Ekser¹
¹Division of Transplant Surgery - Indiana University, Indianapolis, IN, ²3D Bioprinting Core and Department of Radiology and Imaging Sciences - Indiana University, Indianapolis, IN, ³Division of Gastroenterology, Richard L. Roudebush VA Medical Center and Indiana University, Indianapolis, IN
*Purpose: Animal models used for evaluating the mechanisms of liver disease do not fully mimic the complex architecture and metabolic functions of the human liver.…
2020 American Transplant Congress
Nlrp3 Inhibition Improves Heart Graft Function in Donation after Circulatory Death
S. Toldo, E. Mezzaroma, M. Quader
Virginia Commonwealth University, Richmond, VA
*Purpose: Donation after circulatory death (DCD) donors have the potential to increase the number of transplantable hearts, which today relies only on donation after brain…