Articles tagged "Inflammation"

2022 American Transplant Congress
Cell-free Amniotic Fluid Reduces Liver Inflammation And Fibrosis
F. Ditmars¹, C. Bowen¹, N. Liu¹, K. L. Pereira de Castro¹, J. Johnson¹, M. Kueht¹, A. Saad², H. L. Stevenson³, J. Fair¹, W. S. Fagg¹
¹Surgery, University of Texas Medical Branch, Galveston, TX, ²Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, TX, ³Pathology, University of Texas Medical Branch, Galveston, TX
*Purpose: Effective interventions for hepatic inflammation and fibrosis remain a dire unmet need in transplant medicine. Cell-free amniotic fluid (AF) represents a potential alternative to…
2022 American Transplant Congress
Novel Immune Checkpoint Molecule TIGIT Mediates Experimental Kidney Ischemia Reperfusion Injury
S. Noel, K. Lee, S. Gharaie, J. T. Kurzhagen, H. Rabb
Medicine, Johns Hopkins University, Baltimore, MD
*Purpose: T cells play both pathogenic and reparative roles in kidney ischemia reperfusion injury (IRI) but the molecular mechanisms regulating kidney T cell functions are…
2022 American Transplant Congress
Internal Validation of a Pre-Transplant Biomarker Panel to Predict Post-Transplant Mortality: The Liver Immune Frailty Index
G. G. Panayotova¹, D. T. Nguyen², E. A. Graviss², L. J. Minze², S. Simonishvili¹, Y. Qin¹, T. Ayorinde¹, G. Prakash¹, F. Paterno¹, L. Brown¹, A. Amin¹, X. C. Li², R. M. Ghobrial², J. V. Guarrera¹, K. E. Lunsford¹
¹Rutgers New Jersey Medical School, Newark, NJ, ²Houston Methodist Hospital, Houston, TX
*Purpose: Infection and sepsis are the greatest contributors to early post-liver transplant (LT) mortality. These often result from ongoing immune dysfunction, or “Immune Frailty”. We…
2022 American Transplant Congress
DEPTOR: A Novel Endothelial-Specific Regulator of Cell-Intrinsic Anti-Inflammation Following Transplantation
C. Testini¹, S. Bose¹, K. Liu¹, S. Kong¹, E. Flynn¹, M. Miovski¹, J. Leyva-Rangel¹, M. Laplante², J. Wedel¹, D. M. Briscoe¹
¹Boston Children's Hospital and Harvard Medical School, Boston, MA, ²Laval University, Quebec, QC, Canada
*Purpose: Recent studies have highlighted a paradigm whereby the maintenance of normal tissue homeostasis and the prevention of chronic inflammation is dependent on the active…
2022 American Transplant Congress
Ikaros-SIRT1 Signaling Axis Regulates Macrophage Pyroptosis and Ischemia-Reperfusion Injury (IRI) in Mouse and Human Liver Transplantation
K. Kadono¹, H. Hirao¹, H. Kojima¹, K. J. Dery¹, X. Li², J. Kupiec-Weglinski¹
¹UCLA Medical Center, Los Angeles, CA, ²NIEHS, Durham, NC
*Purpose: Although Ikaros is a well-established regulator of lymphopoiesis, its role in myeloid cells and organ IRI remains unclear. We recently reported that the SIRT1-mediated…
2022 American Transplant Congress
P2X7R Signaling Controls Exosome Release by Macrophages and Donor MHC Cross-Dressing After Skin Transplantation
H. H. Lancia¹, N. Carnel², A. G. Lellouch¹, C. Cetrulo¹, G. Benichou²
¹Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, ²Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA
*Purpose: Exosomes released by transplanted organs play an important role in the host's immune response leading to their rejection. Donor exosomes contribute to alloimmunity by…
2022 American Transplant Congress
Bcl6 Regulates NFκB-Controlled Endothelial Inflammation and Apoptosis
A. Franco Acevedo, N. Valenzuela
Pathology and Laboratory Medicine, UCLA, Los Angeles, CA
*Purpose: Endothelial cells (EC) centrally regulate leukocyte access to peripheral tissue and immune cell activation, and exhibit remarkable tissue-specific diversity. However, the molecular mechanisms underlying…
2022 American Transplant Congress
Disulfide HMGB1 Reprograms Macrophages to Induce Alloimmunity via TLR4 and TLR9 Pathways Following Ischemia-Reperfusion Injury in Human Orthotopic Liver Transplantation
A. Q. Terry¹, R. A. Sosa¹, F. Kaldas², R. Busuttil³, D. Gjertson¹, J. Kupiec-Weglinski¹, E. Reed¹
¹Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, CA, ²University of California Los Angeles (Multi-organ), Los Angeles, CA, ³Surgery, University of California, Los Angeles, Los Angeles, CA
*Purpose: Human hepatocellular damage caused by ischemia reperfusion injury (IRI) generates the disulfide form of HMGB1 (diS HMGB1), eliciting myeloid cell activation and proinflammatory cytokine…
2022 American Transplant Congress
IL-15 Signaling is Required for the Maintenance of Tissue Resident Memory T Cells in Chronic Allograft Rejection
R. Tieu¹, Q. Zeng¹, D. Zhao¹, A. Williams¹, J. Yun Tso², F. Lakkis¹, J. Yun Tso²
¹Starzl Transplantation Institute, Pittsburgh, PA, ²JN Biosciences, Mountain View, CA
*Purpose: Currently, no immunotherapies have been clinically proven to prevent or treat chronic rejection. IL-15 is known to support memory T cell homeostasis. However, it…
2022 American Transplant Congress
Higher Proinflammatory Cytokines Are Associated with Increased Antibody Titer After a Third Dose of SARS-CoV-2 Vaccine in Solid Organ Transplant Recipients
A. H. Karaba¹, X. Zhu¹, S. E. Benner¹, O. Akinde¹, Y. Eby¹, K. H. Wang¹, S. Saraf², J. M. Garonzik-Wang³, S. L. Klein¹, J. R. Bailey¹, A. L. Cox¹, J. N. Blankson¹, C. M. Durand¹, D. L. Segev¹, W. A. Werbel¹, A. A. Tobian¹
¹Johns Hopkins University, Baltimore, MD, ²National Institute of Allergy and Infectious Diseases, Bethesda, MD, ³University of Wisconsin School of Medicine and Health, Madison, WI
*Purpose: Solid organ transplant recipients (SOTRs) are at increased risk for severe COVID-19 and exhibit lower antibody responses to SARS-CoV-2 vaccines. This study aimed to…