Articles tagged "T cells"

2020 American Transplant Congress
Electroacupuncture Promotes Induction of Long-Term Allograft Survival by Enhancing Lymphatic Migration of CD4+Foxp3+ Tregs via Upregulating Their LTalpha1beta2 Expression
H. Liu, Y. Chen, F. Qiu, Z. Dai
Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, China
*Purpose: Induction of long-term transplant survival without continuous global immunosuppression is a highly desired goal in transplantation. Electroacupuncture (EA) has been shown to regulate immunity…
2020 American Transplant Congress
CCL18 Plays a Crucial Role in T Cell Recruitment in Upper Extremity Transplant Rejection
T. J. Borges¹, P. Abarzua², B. Kollar², M. Lima-Filho¹, B. T. Aoyama¹, G. F. Murphy², B. Pomahac², C. G. Lian², S. G. Talbot², L. V. Riella¹
¹Medicine, Renal Division, Brigham and Women's Hospital, Boston, MA, ²Brigham and Women's Hospital, Boston, MA
*Purpose: Upper extremity transplantation (UET) is a life-changing procedure for amputee patients. However, 90% of patients experience acute skin rejection in the first post-transplant year,…
2020 American Transplant Congress
Foxp3⁺ Innate and TGF-ß⁺ Adaptive Regulatory Immune Cells in Quilty Lesions are Associated with Acceptance of Heart Allograft
S. A. Moore, C. K. Metter, Q. Cai, J. R. Torrealba
University of Texas Southwestern Medical Center, Dallas, TX
*Purpose: To evaluate the cellular composition of Quilty lesions in heart transplant biopsies and their association with acceptance or rejection of cardiac allografts.*Methods: This study…
2020 American Transplant Congress
B₂-Adrenergic Receptor Activation in Donor Cells Inhibits T Cell Trafficking in Vascularized Composite Tissue Allotransplants
M. Kim¹, D. Fisher¹, J. Loo¹, P. Bogner², U. Sharma³, J. Skitzki¹, E. Repasky⁴
¹Surgical Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, ²Pathology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, ³Cardiology, University at Buffalo, Buffalo, NY, ⁴Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, NY
*Purpose: Transplantation of faces, hands, and limbs using vascularized composite allotransplantation (VCA) has faced significant challenges hindering its routine implementation in the clinic. One critical…
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
Donor Kidney Perfusion Fluid Extracellular Vesicles as Markers of Graft Function
A. K. Rutman, S. Negi, N. Saberi, J. Tchervenkov, S. Paraskevas
Research Institute of the McGill University Health Institute, Montreal, QC, Canada
*Purpose: Kidney transplantation is a life-saving treatment for many patients with end-stage renal failure. Recently, machine perfusion of kidneys prior to transplantation has emerged as…
2020 American Transplant Congress
Simultaneously Detection of ddcfDNA in Plasma and Urine Assist to Determine the Type of Rejection in Renal Transplant Patients
D. Cheng¹, F. Liu², H. Liu², T. Jiang², Y. Zhou³, L. Shu², X. Li¹, K. Xie¹, X. Ni¹, J. Chen¹, J. Ge², Z. Liu¹, H. Shi³
¹Jinling Hospital Nanjing University, Nanjing, China, ²AlloDx, Shanghai; Suzhou, China, ³Jiangsu University, Zhenjiang, China
*Purpose: The correct diagnosis and treatment of acute rejection (ABMR and TCMR) are the key to the long-term survival after renal transplantation. Renal biopsy is…
2020 American Transplant Congress
T Cell Dysfunction as Measured by Impaired Antigen Response is Associated with Infection and Frailty in Kidney Transplant Recipients
J. Schaenman, M. Rossetti, V. Groysberg, G. Sunga, E. Liang, S. Bunnapradist, E. Reed
David Geffen School of Medicine at UCLA, Los Angeles, CA
*Purpose: Kidney transplant recipients are at risk for infection, especially the growing numbers of older patients. Our previous studies demonstrated that senescent and exhausted T…
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
Tonic-Signaling Chimeric Antigen Receptors Drive Exhaustion in Regulatory T Cells
C. Lamarche¹, C. Mackall², E. Weber³, M. Levings⁴
¹University of British Columbia, Vancouver, BC, Canada, ²Stanford University School of Medicine, Standford, CA, ³Stanford University School of Medicine, Stanford, CA, ⁴Surgery, University of British Columbia and BC Children's Hospital Research Institute, Vancouver, BC, Canada
*Purpose: Regulatory T cells (Tregs) and chimeric antigen receptor (CAR) Tregs are a promising cell therapy to prevent or treat autoimmune diseases or allograft rejection.…