2018 American Transplant Congress
Prospective Multicenter Validation of Human Transitional B Cell Cytokines as a Predictive Biomarker in Renal Transplantation
1UPMC, Pittsburgh; 2UCL, London, United Kingdom.
In renal transplantation, non-invasive biomarkers are needed to identify patients at risk for poor outcomes and guide pre-emptive therapy. Here, we assessed B cell cytokines…2018 American Transplant Congress
Reduction in Circulating CD19+CD24+CD27+ Regulatory B Cell Frequency Predicts Acute Rejection in Liver Transplant Patients
Liver Transplant Center, First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Background: Accumulating evidence suggests that regulatory B cells (Bregs) play an important role in modulating inflammation and autoimmune diseases. However, whether Bregs regulate acute liver…2018 American Transplant Congress
TACI-Ig as a Desensitization Agent in a Rat Model of Antibody Mediated Rejection
We examined the effect of APRIL/BLyS blockade on B cell lineages & donor specific antibody (DSA) in preclinical rodent model as a novel desensitization strategy.…2018 American Transplant Congress
Prevention of an Adaptive Immune Response by FDA-Approved Immunosuppressive Agents in Baboons with Pig Artery Patch Xenografts
Background: In the pig-to-baboon artery patch model with no immunosuppressive therapy, a graft from a GTKO pig elicits a significant anti-nonGal IgG response, indicating sensitization…2018 American Transplant Congress
Ex Vivo-Expanded Human CD19+CD73–CD25+CD71+TIM-1+ B Regulatory Cells Can Prolong Allograft Survival in a Humanized Mouse Model of Skin Transplantation and Are Dependent on TIM-1-Mediated Regulation of STAT3 Signaling
The importance of B regulatory cells (Breg) in both health and disease has rapidly become evident over the last decade. Breg are able to control…2018 American Transplant Congress
Peripheral but Not Follicular T Helper Cells Are Activated by Allogeneic Human Endothelial Cells under IRI-Like Conditions and Promote Donor Specific Antibody
Background: Perioperative ischemia reperfusion injury (IRI) is a consequence of solid organ allograft transplantation that primes the graft for future rejection.Methods: We developed an in…2018 American Transplant Congress
Tacrolimus-Based Maintenance Immunosuppression Decreases the Number of Peripheral Blood Transitional B Cells in Nonhuman Primates
Center for Transplantation Sciences, Mass General Hospital, Boston, MA.
IntroductionElevated frequencies of transitional B cells have been reported in patients tolerant of renal allografts, as defined by stable graft function after withdrawal of immunosuppression…2018 American Transplant Congress
Combination Proteasome Inhibition and Anti-BAFF Therapy Permits Highly Sensitized Rhesus Kidney Transplantation
Duke Transplant Center, Duke University Medical Center, Durham, NC.
Purpose:HLA-sensitization is a significant immunologic barrier to successful kidney transplantation (KT). We have shown that proteasome inhibition (PI) in insolation reduces plasma cells (PCs), but…2018 American Transplant Congress
B Cell Reconstitution: 36-Month Analysis of Patients Post-Alemtuzumab Induction Followed by Belatacept-Based Immunosuppression
Alemtuzumab induction combined with belatacept and rapamycin (ABR) maintenance immunotherapy effectively prevents costimulation blockade resistant rejection (CoBRR). We longitudinally investigated kinetics of repopulating B cell…2018 American Transplant Congress
Use of Cyclin-Dependent Kinase Inhibitors to Reduce Gammaherpesvirus Reactivation
Infection with the gammaherpesvirus EBV occurs in over 90% of humans and leads to lifelong viral latency with intermittent reactivation that is typically controlled through…
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