Articles tagged "Alloantibodies"

2019 American Transplant Congress
Upregulation of Endothelial HLA Class II as a Marker of Antibody Mediated Rejection in Heart Allograft Biopsies
Q. Cai, Y. Butt, A. Hendricks, J. Torrealba
Pathology, UTSW Medical Ctr, Dallas, TX
*Purpose: In 2013, the ISHLT (International Society of Heart and Lung Transplant) introduced the working classification for pathological changes associated with antibody-mediated rejection of the…
2019 American Transplant Congress
Iguratimod Attenuates the Production of Donor Specific Antibody by Inducing CD19⁺Tim-1⁺ Regulatory B Cells and Imbalance of Th17 Treg
Z. Wang, S. Fei, H. Chen, Z. Han, L. Sun, J. Tao, X. Ju, M. Zheng, R. Tan, M. Gu
No.300 Guangzhou Road of Nanjing, Nanjing, China
*Purpose: This study was designed to investigate the effect and mechanisms of Iguratimod on circulating DSA and allograft survival in a skin transplant model.*Methods: Mice…
2019 American Transplant Congress
ICOS⁺PD-1⁺ Circulating T Follicular Helper Cells Are a Biomarker of Humoral Alloreactivity and Predict Donor-Specific Antibody Generation Following Transplantation
G. M. La Muraglia II, M. E. Wagener, M. L. Ford, I. R. Badell
Emory Transplant Center, Atlanta, GA
*Purpose: Mounting evidence in kidney transplantation suggests that donor-specific antibodies (DSA) significantly contribute to renal allograft loss. However, biomarkers to guide clinical management of DSA…
2019 American Transplant Congress
The Effects of Anti-BAFF Monoclonal Antibody in the HLA-A2 Sensitized Mouse Model
J. Min¹, H. Lee², B. Kim³, K. Park⁴, K. Doh³, T. Kim⁵, H. Yoon⁶, C. Yang⁷, E. Oh², B. Chung⁷
¹Division of Nephrology, Department of Internal Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon-si, Korea, Republic of, ²Department of Laboratory Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of, ³Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of, ⁴Department of Molecular & Cell Biology, Graduate School, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of, ⁵Department of Medical Informatics, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of, ⁶Division of Nephrology, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea, Republic of, ⁷Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of
*Purpose: B-cell activating factor (BAFF) is a cytokine that plays a role in the survival, proliferation and differentiation of B-cells. The aim of this study…
2019 American Transplant Congress
B Cell Immunophenotypes in Transplantation
M. Cascalho¹, M. de Mattos-Barbosa², E. A. Farkash³, J. L. Platt²
¹University of Michigan, Ann Arbor, MI, ²Surgery, University of Michigan, Ann Arbor, MI, ³Pathology, University of Michigan, Ann Arbor, MI
*Purpose: B cells and B cell responses have been associated with favorable outcomes of transplantation in some setting and unfavorable outcomes in others. For example,…
2019 American Transplant Congress
Subclinical Antibody Mediation Rejection in Stable Kidney Recipients with De Novo Donor Specific Antibodies and Correlation with Donor Derived Cell Free DNA Testing
A. P. Bregman, E. J. Stites, J. Gralla, A. Wiseman, J. E. Cooper
Kidney and Pancreas Transplant, University of Colorado-Denver, Aurora, CO
*Purpose: Subclinical antibody mediated rejection (sAMR) is associated with inferior graft outcomes but its diagnosis relies on the presence of biomarkers as well as histology.…
2019 American Transplant Congress
Iguratimod Inhibits the Donor Specific Antibodies Production and Attenuates the Antibody Mediated Rejection in Rat Kidney Transplantation
Z. Wang, M. Zheng, H. Chen, S. Li, Z. Han, J. Tao, X. Ju, R. Tan, M. Gu
No.300 Guangzhou Road of Nanjing, Nanjing, China
*Purpose: Our study was designed to investigate the efficacy and related mechanisms of Iguratimod (T-614) in the inhibition of DSAs following kidney transplantation.*Methods: A rat…
2019 American Transplant Congress
Increasing Expression of B-cell Maturation Antigen during the Development of Recall Antibody Responses: A Prospective Pharmaceutical Target for B-cell Suppression?
G. Wu, I. Kim, N. Chai, A. Klein, S. Jordan
Cedars-Sinai Med Ctr, Los Angeles, CA
*Purpose: Our previous study found that B cell maturation antigen (BCMA) is increasingly expressed by B/plasma cells during the development of de novo alloantibody responses.…
2019 American Transplant Congress
Overcoming Anti-HLA Sensitization in Kidney Transplantation
R. C. Siqueira¹, P. Malafronte², J. C. Baptista-Silva², E. F. Silva², M. C. Camargo², M. C. Ribeiro Castro²
¹Nephrology Post-Graduation, University of Sao Paulo, São Paulo, Brazil, ²Kidney Transplant Unit, Hospital Samaritano de São Paulo, São Paulo, Brazil
*Purpose: To evaluate if it is possible to achieve good results in kidney transplantation (Ktx) regardless the degree of anti-HLA sensitization.*Methods: 143 adult living (LD)…
2019 American Transplant Congress
Decay Accelerating Factor (DAF) Regulates Germinal Center B-cell and Alloantibody Formation
A. Cumpelik¹, G. Varano², D. Heja¹, D. Homann³, S. Lira⁴, D. Dominguez-Sola², P. S. Heeger¹
¹Nephrology, Mount Sinai School of Medicine, New York, NY, ²Tisch Cancer Institute, Mount Sinai School of Medicine, New York, NY, ³Medicine, Endocrinology, Diabetes and Bone Disease, Mount Sinai School of Medicine, New York, NY, ⁴Clinical Immunology, Mount Sinai School of Medicine, New York, NY
*Purpose: High affinity IgG antibodies including alloantibodies result from germinal center (GC) reactions in which somatic hypermutation and positive selection cause affinity maturation. When we…