Articles tagged "Alloantibodies"

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…
2019 American Transplant Congress
AMD3100 and Low-Dose FK506 Prevent De Novo Donor Specific Antibody Formation and Rejection in a Sensitized Kidney Transplantation Model
A. R. Ahmadi, L. Qi, R. N. Wesson, A. M. Cameron, Z. Sun
Johns Hopkins University School of Medicine, Baltimore, MD
*Purpose: De novo donor specific antibody (DSA) formation and antibody mediated rejection (AMR) are the main cause of allograft failure long-term. We have developed a…
2019 American Transplant Congress
Correlation of Crossmatch Predictions with Actual Results and Clinical Outcomes
R. Forbes¹, B. Concepcion¹, S. Fossey²
¹Vanderbilt University Medical Center, Nashville, TN, ²Dialysis Clinic, Inc, Nashville, TN
*Purpose: Flow cytometry crossmatching (FXM) is recognized as a valuable tool to assess immunological risk prior to renal transplantation. The increased resolution in HLA typing…
2019 American Transplant Congress
Antibody-Suppressor CD8⁺ T Cells Require CXCR5
J. Zimmerer¹, B. A. Ringwald¹, C. L. Avila¹, S. M. Elzein¹, R. T. Warren¹, M. Abdel-Rasoul², G. L. Bumgardner¹
¹Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, ²Center for Biostatistics, The Ohio State University Wexner Medical Center, Columbus, OH
*Purpose: We previously reported the novel activity of alloprimed CD8+ T cells that suppress post-transplant alloantibody production. The purpose of the current study was to…
2019 American Transplant Congress
Differential Regulation of Phosphokinases by Anti-HLA Class I and 11 Antibodies
A. Babu¹, B. Tran², M. Hamdorf², V. Jucaud², S. Daga³, D. Mitchell⁴, M. Everly²
¹Henry Ford Hospitals, Detroit, MI, ²Terasaki Research Institute, Los Angeles, CA, ³University of Warwick, Coventry, United Kingdom, ⁴Medical Sciences, University of Warwick, Coventry, United Kingdom
*Purpose: Anti-HLA antibodies, both pre-formed and de novo are associated with worse graft survival. Glomerular endothelial cells are the targets for antibody mediated rejection. We…
2019 American Transplant Congress
Neutralization of Interlukin-6 by ALD518-P18 (Murine Clazakizumab) Attenuates Donor Specific Antibody Responses in a Mouse Model of Allogeneic Sensitization: A Report of Dosage Finding Study
I. Kim, G. Wu, N. Chai, T. Brennan, A. Klein, S. Jordan
Cedars-Sinai Med Ctr, Los Angeles, CA
*Purpose: Interleukin-6 (IL-6) is a proinflammatory cytokine involved in mediating both T-cell and B-cell responses in allograft rejection. In previous studies, we demonstrated that inhibition…