Articles tagged "T cells"

2018 American Transplant Congress
Preformed Donor-Reactive T-Cells That Persist after ABO Desensitization Independently Predict Severe Acute Cellular Rejection after Living Donor Kidney Transplantation
T. Schachtner,^1,2,3 M. Stein,² P. Reinke.^1,2
¹Nephrology and Internal Intensive Care, Charite Campus Virchow Clinic, Berlin, Germany; ²Berlin-Brandenburg Center for Regenerative Therapie (BCRT), Charite Campus Virchow Clinic, Berlin, Germany; ³Berlin Institute of Health (BIH), Charite and Max Delbrueck Center, Berlin, Germany.
Donor-reactive T-cells have been suggested to impact allograft outcome due to a higher incidence of acute celluar rejection. These donor-reactive memory T-cells rapidly acquire effector…
2018 American Transplant Congress
Leukocytes from Recipients with Severe Primary Graft Dysfunction after Lung Transplant Adoptively Transfer Alloreactivity to Vessel Grafts Trans Vivo
A-.K. Knoefel,¹ T. Siemeni,¹ N. Madrahimov,¹ W. Sommer,¹ M. Avsar,¹ L. Ahrens,¹ I. Tudorache,¹ A. Haverich,¹ C. Falk,² G. Warnecke.¹
¹HTTG, MHH, Hannover, Germany; ²Transplantimmunology, MHH, Hannover, Germany.
Introduction: Primary graft dysfunction (PGD) is the main cause of early mortality after lung transplantation (LTx). Multiple mechanisms have been described, but the link between…
2018 American Transplant Congress
Tregs Expression Predicts Prognosis in Patients with Hepatocellular Carcinoma
A. Baquerizo,¹ V. Vavinskaya,² C. Frenette,¹ M. Nelson,¹ R. Schaffer,¹ J. Fisher,¹ L. Sher,³ B. Madani,¹ P. Pockros,¹ C. Marsh.¹
¹Surgery / Transplant, Scripps Green Hospital, La Jolla, CA; ²Pathology, UCSD, San Diego, CA; ³Surgery / Transplant, USC, Los Angeles, CA.
New therapeutic strategies are needed to improve the survival of patients with hepatocellular carcinoma (HCC), the third in overall global cancer-related mortality. T regulatory cells…
2018 American Transplant Congress
Dependency on CD4 T Cells, Foreign Protein, and CD22 for Generation of Antibody Response to Non-Self Blood Group A-Antigen in a Mouse Model
I. Adam, B. Motyka, K. Tao, L. West.
Alberta Transplant Institute, Canadian National Transplant Research Program, University of Alberta, Edmonton, AB, Canada.
Background: ABO-incompatible heart transplantation (ABOi-HTx) is safe during infancy and allows increased donor access. B cell tolerance develops to donor A/B-antigens (Ag) after ABOi HTx…
2018 American Transplant Congress
T Cell Exhaustion Contributes to Operational Tolerance of Liver Allografts in Pediatric Liver Transplant Recipients
B. Ramaswami,¹ M. Marrari,² O. Yoshida,⁵ X. Guo,³ W. Hoffman,³ C. Bentlejewski,² D. Metes,¹ A. Demetris,^1,2 A. Zeevi,² A. Thomson,¹ G. Mazariegos,⁴ G. Chalasani.^1,3
¹Surgery, Starzl Transplantation Institute, Pittsburgh, PA; ²Pathology, University of Pittsburgh, Pittsburgh, PA; ³Medicine, University of Pittsburgh, Pittsburgh, PA; ⁴Children's Hospital, University of Pittsburgh, Pittsburgh, PA; ⁵Gastroenterology, Ehime University Graduate School of Medicine, Toon-shi, Ehime-ken, Japan.
Operational tolerance in the absence of immunosuppression can be successfully attained in pediatric liver transplant recipients. Although DSA are observed in a proportion of operationally…
2018 American Transplant Congress
Clinical Significance of BK Virus-Specific ELISPOT Assay in Kidney Transplant Recipients
J. Chang,^1,2 H. Bae,³ K. Park,³ H. Lee,³ B. Choi,^1,2 C. Park,^1,2 C. Yang,^1,2 Y. Kim,^1,2 E-.J. Oh,^1,4 B. Chung.^1,2
¹Transplant Research Center, Seoul St.Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; ²Division of Nephrology, Department of Internal Medicine, Seoul St.Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; ³Department of Biomedical Science, Graduate School, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; ⁴Department of Laboratory Medicine, Seoul St.Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
This study aimed to investigate whether BK virus (BKV)-specific T-cell immunity measured by an interferon-γ enzyme-linked immunospot (ELISPOT) assay can predict the outcome of BKV…
2018 American Transplant Congress
T Cell Lineage Imbalance and Regulatory Immune Populations in HCC Patients Undergoing Downstaging While Waitlisted for Liver Transplantation
P. Thevenot,¹ K. Nunez,¹ T. Sandow,² J. Gimenez,² J. Gonzalez-Rosario,¹ M. Patel,¹ A. Alfadhli,¹ D. Wyczechowska,³ A. Cohen.¹
¹Institute of Translational Research, Ochsner Health System, New Orleans, LA; ²Interventional Radiology, Ochsner Health System, New Orleans, LA; ³Stanley S Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, LA.
Purpose:In this study, we monitored peripheral lymphocyte lineage and regulatory immune populations in HCC patients undergoing DEB-TACE as a bridge to liver transplantation.Methods: Liver transplant…
2018 American Transplant Congress
BK Polyomavirus (BKPyV)-Specific T Cells as a Diagnostic and Prognostic Marker for BKPyV-Infections after Pediatric Kidney Transplantation
T. Ahlenstiel-Grunow,¹ M. Sester,² U. Sester,³ L. Pape.¹
¹Pediatric Nephrology, Hannover Medical School, Hannover, Germany; ²Transplant and Infection Immunology, Saarland University, Homburg, Germany; ³Internal Medicine IV, Saarland University, Homburg, Germany.
After kidney transplantation (KTx) immunosuppressive therapy causes an impaired cellular immune defense resulting in an increased risk of BKPyV-nephropathy (BKPyVAN). Prognostic markers for the outcome…
2018 American Transplant Congress
Ablation of IRF4 Induces Transplant Tolerance by Driving Intrinsic T Cell Dysfunction
J. Wu,^1,2 H. Zhang,¹ X. Shi,¹ X. Xiao,¹ Y. Fan,¹ J. Xia,² R. Sciammas,^1,3 X. Li,^1,3 W. Chen.^1,3
¹Center for Immunobiology & Transplant Science, Houston Methodist Research Institute, Houston, TX; ²Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China; ³Department of Surgery, Weill Cornell Medical College of Cornell University, New York, NY.
How transplant rejection is regulated on a transcriptional level remains unclear. We found that T cell-specific conditional knockout (cKO) of the transcription factor IRF4 in…
2018 American Transplant Congress
LAG-3 Deletion Upregulates Memory in a Dendritic Cell-Dependent Process
S. Gibney,¹ M. Efre,¹ T. Ashry,¹ C. Yang,¹ T. O'Shea,^1,2 R. White,² P. Russell,¹ J. Madsen,¹ R. Colvin,² A. Alessandrini.^1,2
¹Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, MA; ²Department of Pathology, Massachusetts General Hospital, Boston, MA.
Introduction. Cardiac transplantation is critical for management of severe heart failure, but cardiac allografts frequently undergo chronic T-cell-mediated allograft rejection. Our research demonstrates that Lymphocyte…