ATC Abstracts

American Transplant Congress abstracts

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Articles tagged "B cells"

  • 2017 American Transplant Congress

    CD19+CD38hiCD24hi Immature Transitional B Cells in PBMCs of Tolerant Kidney Recipients of Facilitating Cell-Enriched Hematopoietic Stem Cells and Renal Allografts.

    Y. Wen,1 A. Merchak,1 Y. Huang,1 H. Xu,1 L. Kahn,1 J. Leventhal,2 S. Ildstad.1

    1Institute for Cellular Therapeutics, University of Louisville, Louisville, KY; 2Comprehensive Transplant Center, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL

    CD19+CD38hiCD24hi immature transitional B cells may represent a biomarker for transplantation tolerance in kidney transplant (KTx) recipients (Cherukuri A, et al. J Am Soc Nephrol.…
  • 2016 American Transplant Congress

    Alloantibody Suppression by Bruton Tyrosine Kinase Antagonist Ibrutinib Is Associated with a Moderate Splenic B-Cell Reduction.

    N.-N. Chai, I. Kim, S. Jordan, A. Klein, G. Wu.

    Comprehensive Transplantation Center/Surgery, Cedars-Sinai Medical Center, Los Angeles, CA.

    Background Bruton tyrosine kinase (Btk) is specifically required for activation of the B-cell antigen receptor signaling pathway that contributes to the initiation and maintenance of…
  • 2016 American Transplant Congress

    Acquired Down-Regulation of B Cell Function Induced by Donor Blood Group Antigens After ABO-Incompatible Kidney Transplantation.

    M. Tasaki,1 K. Saito,1 Y. Nakagawa,1 N. Imai,2 T. Aoki,3 M. Kamimura,3 K. Takahashi,1 Y. Tomita.1

    1Division of Urology, Department of Regenerative & Transplant Medicine, Niigata Graduate School of Medical and Dental Sciences, Niigata, Japan; 2Division of Clinical Nephrology and Rheumatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan; 3Division of Transfusion Medicine and Regenerative Medicine Bioscience Medical Center, Niigata University Medical and Dental Hospital, Niigata, Japan.

    Background: The long-term of B cell immunobiology against donor blood group antigen has not been elucidated in ABO incompatible kidney transplantation (ABOi KTx).Methods: The antibody…
  • 2016 American Transplant Congress

    B Cell Signature Profiling in Kidney Transplant Patients on Thymoglobulin.

    A. Benitez,1 T. Milford,2 K. Torralba,3 K. Payne,2 M. De Vera.1

    1Transplantation Institute, Loma Linda University Health Care, Loma Linda, CA; 2Basic Science Division of Anatomy, Loma Linda University, Loma Linda, CA.

    Purpose: B cell subsets could be used as biomarkers to modulate therapy regimens in kidney transplant patients. B cell subsets occur with varying proportions within…
  • 2016 American Transplant Congress

    HLA Antibody Clonality and Epitopes Dictate Complement Activation.

    K. Thomas,1 N. Valenzuela,1 A. Mulder,2 E. Reed.1

    1Pathology and Laboratory Medicine, UCLA, Los Angeles, CA; 2Leiden University Medical Center, Leiden, Netherlands.

    Background: Alloimmunization results in production of polyclonal donor specific antibodies (DSA) against human leukocyte antigens (HLA), which mediate endothelial cell activation, leukocyte recruitment, and complement…
  • 2016 American Transplant Congress

    First Experience with Obinutuzumab (Type II Anti-CD20) in Patients with Treatment-Resistant Glomerular Diseases and Antibody-Mediated Rejection.

    J. Choi, S. Jordan, A. Vo.

    Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA.

    Introduction: There is extensive experience with rituximab (RTX,Type I anti-CD20) for desensitization (DES) and treatment of ABMR. There is also a comparable experience in treatment…
  • 2016 American Transplant Congress

    Everolimus Decline Anti-ABO Blood Type Antibody Titer in Desensitization for ABO Incompatible Kidney Transplantation.

    Y. Wada, N. Fukuzawa, H. Harada.

    Kidney Transplantation Surgery, Sapporo City General Hospital, Sapporo, Hokkaido, Japan.

    INTRODUCTION: The immoderate donor shortage and sophisticated desensitization protocols resulted in the explosive increase and great success of the ABO blood type incompatible kidney transplantation…
  • 2016 American Transplant Congress

    Initial Experience with the Bacterial Enzyme IdeS® (IgG Endopeptidase) for Desensitization of Highly-HLA Sensitized (HS) Patients.

    S. Jordan,1 J. Choi,1 X. Zhang,1 M. Haas,2 A. Peng,1 J. Kahwaji,1 R. Villicana,1 A. Vo.1

    1Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, CA; 2Pathology, Cedars-Sinai Medical Center, Los Angeles, CA.

    Introduction: The IgG degrading enzyme derived from Streptococcus pyogenes (IdeS®) is a 35k-Da cysteine protease that cleaves human IgG molecules at the lower hinge region…
  • 2016 American Transplant Congress

    The Effect of Rituximab on Hepatitis B Reactivation in Kidney Transplant Recipients with Resolved Hepatitis B.

    J. Lee,1 J. Park,2 J. Lee,1 S. Song,1 J. Lee,1 S.-K. Kwon,1 K. Huh,1 B. Kim,3 M. Kim,1 S. Kim,1 S. Ahn,2 Y. Kim.1

    1Surgery, Yonsei University College of Medicine, Seoul, Korea; 2Internal Medicine (Gastroenterology), Yonsei University College of Medicine, Seoul, Korea; 3Internal Medicine (Nephrology), Yonsei University College of Medicine, Seoul, Korea.

    Background: Hepatitis B virus (HBV) reactivation is a well-known complication of immunosuppressive therapy in resolved HBV (hepatitis B surface antigen [HBsAg] negative and hepatitis B…
  • 2016 American Transplant Congress

    A Prospective Carfilzomib-Based Desensitization Trial: Phase 1 Results.

    S. Tremblay,1 A. Shields,1 R. Alloway,1 P. Brailey,1 B. Abu Jawdeh,1 T. Latif,1 J. Driscoll,1 M. Pando,2 A. Girnita,1 E. Woodle.1

    1U Of Cincinnati, Cincinnati; 2Mayo Clinic, Phoenix.

    Carfilzomib (CFZ) is mechanistically distinct from bortezomib as it is an irreversible PI. Results from phase 1 of a CFZ desensitization (DS) trial are presentedMethods:…
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