Articles tagged "Leukocytes"

2022 American Transplant Congress
P2X7R Signaling Controls Exosome Release by Macrophages and Donor MHC Cross-Dressing After Skin Transplantation
H. H. Lancia¹, N. Carnel², A. G. Lellouch¹, C. Cetrulo¹, G. Benichou²
¹Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, ²Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA
*Purpose: Exosomes released by transplanted organs play an important role in the host's immune response leading to their rejection. Donor exosomes contribute to alloimmunity by…
2022 American Transplant Congress
Utility of Cytomegalovirus T-Cell Immunity Panel to Predict CMV Infections in Lung Transplant Recipients
R. W. Lincoln¹, B. J. Pierce¹, C. Pham¹, S. W. Yau², A. Goodarzi², J. G. Youssef², H. J. Huang²
¹Pharmacy, Houston Methodist Hospital, Houston, TX, ²Pulmonology, Houston Methodist Hospital, Houston, TX
*Purpose: Given the limited data of cytomegalovirus T-cell immunity panels (CMV TCIP) in lung transplant recipients (LTR), we sought to describe our center’s experience with…
2022 American Transplant Congress
P2X7R Inhibition Impairs In Vitro Training of Macrophages
H. H. Lancia¹, R. Sanchez², A. G. Lellouch¹, C. L. Cetrulo¹, J. Ochando³, G. Benichou⁴
¹Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, ²Icahn School of Medicine at Mount Sinai, New York, NY, ³Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, ⁴Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA
*Purpose: Macrophage training and ATP-mediated P2X7R signaling are unrelated key elements of the innate immune response associated with allotransplant rejection. In the present study, we…
2022 American Transplant Congress
Single Cell RNAseq Analysis of Human Renal Allograft Rejection Demonstrates Distinct Transcriptomic Profiles That Vary Based on the Type of Maintenance Immunosuppression
T. Shi¹, A. Burg¹, K. Roskin², J. Rush³, B. Haraldsson³, A. Shields⁴, R. Alloway⁴, E. Woodle⁵, D. Hildeman¹
¹Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, ²Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, ³Novartis Pharmaceuticals AG, Basel, Switzerland, ⁴Internal Medicine, University of Cincinnati, Cincinnati, OH, ⁵Surgery, University of Cincinnati, Cincinnati, OH
*Purpose: Rejection therapy has remained unchanged for 60 years and is associated with significant failure and infection rates. Development of new anti-rejection therapies requires mechanistic…
2022 American Transplant Congress
Apheresis of Deceased Donors: A New Source of Mobilized Peripheral Blood Hematopoietic Stem Cells for Transplant Tolerance
R. A. Sosa¹, T. Mone², B. V. Naini¹, D. B. Kohn³, E. F. Reed¹, K. Wheeler², B. Campo-Fernandez³, A. Davila³, D. J. Chaffin⁴, J. DiNorcia⁵, F. M. Kaldas⁵, A. Cohen², E. Lum⁶, J. L. Veale⁷, N. M. Kogut⁷
¹Pathology and Lab Medicine, UCLA, Los Angeles, CA, ²One Legacy, Los Angeles, CA, ³Microbiology, Immunology and Molecular Genetics, UCLA, Los Angeles, CA, ⁴LifeStream Blood Bank, San Bernadino, CA, ⁵Surgery, UCLA, Los Angeles, CA, ⁶Medicine, UCLA, Los Angeles, CA, ⁷Urology, UCLA, Los Angeles, CA
*Purpose: Solid organ transplantation is the therapy of choice for many patients with end-stage organ failure, but recipients must remain on lifelong immune suppression, leaving…
2021 American Transplant Congress
Leukopenia in the Renal Transplant Population
A. Johnson¹, G. Karadkhele², C. Larsen¹
¹Emory University, Atlanta, GA, ²Surgery, Emory University, Atlanta, GA
*Purpose: Leukopenia is a common complication for transplant patients on immunosuppression, but etiologies, timing, and outcomes are only superficially understood.*Methods: All patients undergoing kidney transplant…
2020 American Transplant Congress
Outcomes in Liver Transplantation with Use of Granulocyte-Colony Stimulating Factor
K. Schnelle, A. Leino, M. Chunduru, L. Von Stein, O. Witkowsky
The Ohio State Wexner Medical Center, Columbus, OH
*Purpose: Questions remain if treatment with a granulocyte-colony stimulating factor (G-CSF) impacts clinical outcomes after liver transplant. The purpose of this study was to compare…
2020 American Transplant Congress
IL-33 is a Potent Injury Signal That Programs Graft Macrophage Metabolism Toward That Required for Reparative and Regulatory Functions
T. Li¹, Z. Zhang¹, Q. Liu¹, J. Bartolacci², M. Velayutham¹, G. Hussey², J. Dziki², L. Mathews¹, Y. Lee³, G. Dwyer¹, H. Dai¹, A. Roessing¹, S. Shiva⁴, M. Oberbarnscheidt¹, S. Badylak², H. Turnquist¹
¹Starzl Transplant Inst. and Dept. Surgery, University of Pittsburgh, Pittsburgh, PA, ²McGowan Inst. and Dept. of Surgery, University of Pittsburgh, Pittsburgh, PA, ³Bioengineering, University of Pittsburgh, Pittsburgh, PA, ⁴Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA
*Purpose: Sequestered self-molecules, such as HMGB1 or haptoglobin, are appreciated to stimulate the pro-inflammatory response of infiltrating innate immune cells by targeting TLR4 after their…
2020 American Transplant Congress
Sialoadhesin Mediates the Adhesion of Human RBC to Porcine Macrophages from Genetically Engineered Pigs
K. Petitpas¹, B. Cerel¹, Z. Abady¹, L. Burdorf¹, D. L. Ayares², D. M. Magnani³, R. N. Pierson III¹, A. M. Azimzadeh¹
¹Center for Transplantation Sciences, Massachusetts General Hospital/Harvard Medical School, Boston, MA, ²Revivicor, Blacksburg, VA, ³MassBiologics of UMMS, Boston, MA
*Purpose: The sequestration of human RBC is prominent after liver and lung xenotransplantation. Rees et al previously implicated porcine sialoadhesin in adhesion of human RBC…
2020 American Transplant Congress
Early Impact of Interleukin-6 Blockade on the Distribution of Peripheral Blood Immune Cell Subpopulations – 3-Month Results of a Phase 2 Trial Evaluating Clazakizumab in Late Antibody-Mediated Rejection
K. A. Doberer¹, G. A. Boehmig¹, M. Streitz², S. Schlickeiser², F. Bauernfeind¹, A. Spittler³, B. Jilma⁴, F. Eskandary¹, E. Chong⁵, S. Schranz⁴, K. Budde⁶, M. Dürr⁶
¹Department of Medicine III, Medical University of Vienna, Vienna, Austria, ²Charité Universitätsmedizin Berlin, Institute of Medical Immunology, Berlin, Germany, ³Center of Translational Research, Medical University of Vienna, Vienna, Austria, ⁴Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria, ⁵Vitaeris Inc., Vancouver, BC, Canada, ⁶Division of Nephrology and Intensive Care, Charité Universitätsmedizin Berlin, Berlin, Germany
*Purpose: Interleukin-6 (IL-6) is considered to play a critical role within the multifacted pathophysiological process of antibody-mediated rejection (ABMR), including modulation of regulatory T cells…

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