Articles tagged "T cells"

2018 American Transplant Congress
Increase on Regulatory Cells in Kidney Transplanted Patients Presenting Donor-Specific Antibodies
G. Maciel,¹ M. Fernandes,^1,2 E. Barbosa,² H. Rodrigues,¹ N. Panajotopolus,¹ F. Agena,² E. David-Neto,² V. Coelho,¹ M. Castro.²
¹Laboratory of Immunology, São Paulo University, São Paulo, Brazil; ²Renal Transplantation Service, Clinical Hospital, São Paulo, Brazil.
The role of anti-HLA donor specific antibodies (DSA) in increasing the risk of graft rejection is known. Nevertheless, not all patients with DSA develop rejection…
2018 American Transplant Congress
CD4⁺ T Cells Are Key Barriers to Tolerance Resistance to Islet Allografts in Autoimmune NOD Mice
A. Burrack,¹ K. Beard,² M. Coulombe,² R. Gill.²
¹Microbiology, Immunology, and Cancer Biology, University of Minnesota, Minneapolis, MN; ²Surgery, University of Colorado Denver, Aurora, CO.
Pancreatic islet allografts are effective for restoring euglycemia in type 1 diabetics (T1D) but are vulnerable to rejection by autoreactive (islet-specific) and/or conventional alloreactive T…
2018 American Transplant Congress
TORC1 Inhibition Protects Activated Human Regulatory T Cells from Self-Inflicted Damage via Granzyme B
B. Al Dulaijan, S. Eskandari, J. Karnyski, J. Assaker, S. Cai, A. Mansouri, M. Mohamed, J. Azzi.
Transplantation Research Center, BWH, Harvard Medical School, Boston, MA.
The safety and efficacy of adoptive transfer of regulatory T cells (Tregs) are being extensively investigated in ongoing clinical trials. However, these trials have been…
2018 American Transplant Congress
Loss of HIF-1α in CD4 T Cell Improve Outcome of Mouse Vascularized Osteomyocutaneous Allotransplantation under Costimulation Blockade
C-.H. Lin,^1,2 M. Anggelia,^1,2 H. Yang,³ W. Chuang,⁴ H. Cheng,¹ F-.C. Wei,^1,2 G. Brandacher.⁵
¹PRS, Center for VCA, Chang Gung Memorial Hospital, Taoyuan, Taiwan; ²Chang Gung Medical College and Chang Gung University, Taoyuan, Taiwan; ³Nephrology, Chang Gung Memorial Hospital, Taoyuan, Taiwan; ⁴Pathology, Chang Gung Memorial Hospital, Taoyuan, Taiwan; ⁵PRS, Johns Hopkins University School of Medicine, Baltimore, MD.
Background: Allograft survival depends on the balance of effector T cells (Teff) and regulatory T cells (Tregs). Previous study suggested that the balance is controlled…
2018 American Transplant Congress
Persistence and Homing of Autologous Donor-Reactive Ex-Vivo Expanded Regulatory T Cells to Heart Allografts in Lymphodepleted Recipient Monkeys
M. Ezzelarab, Z. Hong, A. Zahorchak, L. Lien, T. Nakao, H. Dai, D. van der Windt, A. Perez-Gutierrez, J. Bhama, A. Thomson.
Surgery, Starzl Transplantation Institute, Pittsburgh, PA.
Background:Infusion of ex vivo expanded regulatory T cells (Treg) is a promising therapy to prevent allograft rejection. Trafficking of Treg to allografts and secondary (2ry)…
2018 American Transplant Congress
CD8⁺Tissue Resident Memory T Cells Are Key Effector Cells in Intestinal Transplantation Patients with GvHD
O. Aguirre, B. Houlihan, A. Karabala, R. Girlanda, J. Hawksworth, C. Matsumoto, M. Zasloff, T. Fishbein, A. Kroemer.
Medstar Georgetown Transplant Institute, Medstar Georgetown University Hospital, Washington, DC.
A. As the pathophysiologic role of Tissue Resident Memory T Cells (TRM) in intestinal transplantation (ITx) is unknown, this study aims to test the hypothesis…
2018 American Transplant Congress
Detection of Different Gene Expression Profiles in CD8⁺ T Cells from Chronic High EBV Load Carriers after Pediatric Heart and Liver Transplantation
M. Yamada,^1,2 C. Macedo,² X. Gu,² M. Michaels,^1,2 M. Green,^1,2 C. Nguyen,^1,2 U. Chandran,³ B. Feingold,^1,2 G. Mazariegos,^1,2 D. Metes.^1,2
¹Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA; ²Thomas E. Starzl Transplantation Institute, Pittsburgh, PA; ³Biomedical Informatics, University of Pittsburgh, Pittsburgh, PA.
Background: EBV infection and post-transplant lymphoproliferative disorders (PTLD) are life-threatening complications of pediatric solid organ transplantation (Tx). The risk for PTLD varies by transplanted organ,…
2018 American Transplant Congress
Patients Converted to Belatacept Show Different Immunophenotyping Compared with De Novo Belatacept-Treated Patients
M. Rial,¹ F. Caro,² A. Nella,² D. Guerrieri,² L. León,¹ P. Uva,¹ E. Chuluyan,² D. Casadei.¹
¹Instituto de Nefrología, Nephrology, Buenos Aires, Argentina; ²CEFYBO, UBA, CONICET, Buenos Aires, Argentina.
The incidence of adverse clinical events mainly in early, but not late post-transplantation such as an increased rate of acute rejection precludes the use of…
2018 American Transplant Congress
Melatonin Prolongs Heart Allograft Survival by Induction of Foxp3+ Regulatory T Cells
L. Liu, Q. Su, Y. Xiong, Z. Bi, H. Huang, Y. Peng, C. Wang.
The First Affiliated Hospital of Sun Yet-sen University, Guangzhou, China.
Objective: This study was aimed to investigate the effect of melatonin on heart allograft survival and explore the underlying mechanism. Methods and Results: Balb/c and…
2018 American Transplant Congress
A Natural Herb Danshen Suppresses Allospecific Memory CD8+ T Cell Generation and Murine Allograft Rejection
Z. Dai, H. Liu, Y. Chen, C-.L. Liang, F. Qiu.
Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China.
Inducing long-term transplant survival or tolerance without continuous global immunosuppression is a highly desired goal in transplantation given that conventional immunosuppressive drugs may cause side…