Articles tagged "Alloantibodies"

2021 American Transplant Congress
Contribution of T-bet Expressing CD27+ CD21- Activated Memory B Cells Poised for Plasma Cell Differentiation to Antibody-mediated Rejection of Kidney Transplants
K. Louis¹, E. Bailly¹, C. Macedo¹, B. Ramaswami¹, X. Gu¹, G. Chalasani¹, A. Zeevi¹, P. Randhawa¹, H. Singh², C. Lefaucheur³, D. Metes¹
¹Surgery, University of Pittsburgh, Pittsburgh, PA, ²Center for Systems immunology, Department of Immunology, University of Pittsburgh, Pittsburgh, PA, ³Human Immunology and Immunopathology, INSERM U976, Paris, France
*Purpose: Alloimmunity triggered by donor-specific antibodies (DSAs) and ensuing development of antibody-mediated rejection (ABMR) are detrimental to organ transplants. Yet, the cellular states underlying B…
2021 American Transplant Congress
The Relevance of Naturally Occurring Non-HLA Antibody to Antibody Mediated Rejection in Patients without Anti-HLA Antibodies After Kidney Transplantation
H. Ishida¹, T. Shimizu², K. Unagami³, H. Shirakawa¹, K. Tanabe¹
¹Tokyo Womens, Tokyo 162-8666, Japan, ²Urology, Tokyo Womens, Tokyo 162-8666, Japan, ³Nephrology, Tokyo Womens, Tokyo 162-8666, Japan
*Purpose: Very few papers describe the association between non-HLA antibodies and the incidence of antibody mediated rejection (AMR) in kidney recipients. We investigated the incidence…
2021 American Transplant Congress
Novel Discovery of Super-antigen That Mobilize Regulatory Cd8 T Cells Inhibits Donor-specific Antibody and Protects Heart Allografts from Antibody-mediated Rejection
J. Y. Choi¹, H. Nakagawa², Z. Solhjou¹, K. Yatim¹, H. Zhang³, P. Patel³, M. Tawfeek Mohammed³, L. Riella⁴, H. Kim², H. Cantor², J. Azzi¹
¹Brigham and Women's Hospital/Harvard Medical School, Boston, MA, ²Dana Farber Cancer Institute/Harvard Medical School, Boston, MA, ³Brigham and Women's Hospital, Boston, MA, ⁴Massachusetts General Hospital/Harvard Medical School, Boston, MA
*Purpose: Antibody-mediated rejection (AMR) is a critical barrier to long-term allograft survival. We showed that Qa-1 (HLA-E in humans) restricted CD8+ T cells (CD8 Treg)…
2021 American Transplant Congress
Safety and Tolerability of Tacrolimus Extended-Release (astagraf Xl) in Hla Sensitized Kidney Transplant Recipients: A Single Center Experience
A. A. Vo, N. Ammerman, E. Huang, A. Peng, R. Najjar, S. Sethi, K. Lim, M. Gillespie, S. C. Jordan
Cedars Sinai Medical Ctr, Los Angeles, CA
*Purpose: Pill burden is a limitation in kidney transplant. Tacrolimus extended-release (Astagraf XL) is a once daily formulation approved for kidney transplantation. Increased compliance could…
2021 American Transplant Congress
DSA Causes Mild Molecular ABMR-like Changes in Many Biopsies Not Diagnosed as Rejection
P. F. Halloran¹, K. S. Madill-Thomsen¹, &. the INTERCOMEX Study Group²
¹Alberta Transplant Applied Genomics Centre, Edmonton, AB, Canada, ²., ., AB, Canada
*Purpose: In the multicenter study INTERCOMEX, we developed a microarray-based system (MMDx) for diagnosing antibody-mediated and T cell-mediated rejection (ABMR, TCMR) in kidney transplant biopsies…
2021 American Transplant Congress
Outcomes of Kidney Transplant Recipients with Antibody-mediated Allograft Rejection: A Retrospective Study
A. Al Jurdi¹, L. Goldfarb¹, M. Lafargue², J. Azzi³, L. V. Riella¹
¹Center for Transplantation Sciences, Massachusetts General Hospital, Charlestown, MA, ²Université de Paris, Paris, France, ³Transplantation Research Center, Brigham and Women’s Hospital, Boston, MA
*Purpose: The optimal regimen for treating acute and chronic antibody-mediated rejection (AMR) in kidney transplant recipients has yet to be established. The purpose of the…
2021 American Transplant Congress
The Trifecta Study: Calibrating Circulating Donor-Derived Cell-Free DNA at the Time of Indication Biopsies Against the Molecular Phenotype of the Biopsy Reveals a Prominent Association with NK Cell Genes
P. Halloran¹, Z. Demko², A. Prewett², J. Reeve¹, P. Billings²
¹Alberta Transplant Applied Genomics Centre, Edmonton, AB, Canada, ²Natera Inc., San Carlos, CA
*Purpose: The international, multicenter, prospective Trifecta study was designed to calibrate dd-cfDNA% measurements in blood at the time of indication biopsy against the molecular characteristics…
2021 American Transplant Congress
The Clinical Significance of Preformed Anti-HLA-DQ Donor-specific Antibodies on Allograft Outcomes in Kidney Transplantation
S. Lee¹, C. Yang², B. Chung²
¹Seoul National University Hospital, Seoul, Korea, Republic of, ²Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of
*Purpose: De-novo anti-HLA-DQ donor-specific antibody (DSA) has been identified as a risk factor for late graft dysfunction and graft loss in kidney transplantation (KT). The…
2021 American Transplant Congress
CD56^dimCD16^bright NK Cells from Kidney Transplant Recipients with Antibody-mediated Rejection Display Increased Proliferation, Type-1 Activation and Cytotoxic Profile
E. Bailly¹, C. Macedo¹, K. Louis¹, B. Ramaswami¹, M. Lucas¹, C. Bentlejewski¹, P. Randhawa¹, A. Zeevi¹, C. Lefaucheur², D. Metes¹
¹Department of Surgery, Thomas E. Starzl Transplantation Institute, Pittsburgh, PA, ²INSERM UMR-S976. Endothelium, Inflammation & Alloreactivity, Université de Paris, Paris, France
*Purpose: CD56dimCD16bright NK cells are highly potent for cytotoxicity through cell-mediated cytotoxicity (CMC), antibody-dependent cell-mediated cytotoxicity (ADCC) and INF-γ production. The contribution of NK cells…
2021 American Transplant Congress
Clazakizumab (clz, Anti-il-6 Antibody) Treatment Affects Il-6/il-6r Signaling by Increasing Soluble Gp130 (sgp130) in Hla-sensitized Kidney Transplant Patients (hs Ktx Pts) Treated for Chronic Antibody-mediated Rejection (cabmr)
B. Shin, S. Ge, A. Jimenez, N. Ammerman, A. Vo, R. Zhang, S. C. Jordan, M. Toyoda
Cedars-Sinai Medical Center, Cerritos, CA
*Purpose: IL-6 is a pro-inflammatory cytokine responsible for chronic vascular inflammation and a promising target for cABMR modulation. IL-6/sIL-6R complex initiates more pathogenic trans-signaling pathways…

« Previous Page
1
…
3
4
5
6
7
…
40
Next Page »