Abstracts Archive - Page 778 of 1683 - ATC Abstracts

2018 American Transplant Congress
Dynamics of CD25-Positive Myeloid Suppressor Cells in Solid Organ Transplanted Patients and Relationship with Rejection
A. Utrero-Rico,¹ R. Laguna-Goya,¹ F. Cano-Romero,¹ E. Gómez-Massa,² M. Fernandez-Ruiz,³ J. Aguado,³ E. Mancebo-Sierra,² M. Castro-Panete,² E. Paz-Artal.^1,2
¹Immunodeficiencies and Transplant Immunology Group, Research Institute of Hospital 12 de Octubre (i+12), Madrid, Spain; ²Immunology, Hospital 12 de Octubre, Madrid, Spain; ³Infectious Diseases, Hospital 12 de Octubre, Madrid, Spain.
Background: Myeloid derived suppressor cells (MDSC) are immature cells with immunosuppressive capacities. Three MDSC subsets are currently defined: monocytic, early stage, and polymorphonuclear MDSC (M-MDSC,…
2018 American Transplant Congress
What's Normal? An Evaluation of Pediatric T Cell Markers in Healthy Controls
M. Sosniuk,¹ A. Halpin,^1,2,5,6,7 J. Wizniak,⁷ A. Szkotak,^6,7 S. Urschel,^1,2,5 L. Ionescu,^1,2,5 L. West.^1,2,3,4,5,6
¹Dept of Pediatrics, U of Alberta, Edmonton, Canada; ²Alberta Transplant Institute, Edmonton, Canada; ³Dept of MMI, U of Alberta, Edmonton, Canada; ⁴Dept of Surgery, U of Alberta, Edmonton, Canada; ⁵Canadian National Transplant Research Program, National, Canada; ⁶Dept of Laboratory Medicine, U of Alberta, Edmonton, Canada; ⁷Laboratory Medicine and Pathology, Alberta Health Services, Edmonton, Canada.
INTRODUCTION: Studying pediatric patients includes challenges such as difficulty obtaining samples, limited normal controls and small volumes. Standardized flow cytometry (FC) lymphocyte immunophenotyping panels are…
2018 American Transplant Congress
A Novel Preservation Solution for Lung That Improves Cell Viability and Tissue Architecture
J. Friedman,¹ M. Samamrco,¹ L. Marrero,¹ B. Bunnell,¹ D. Spyropoulos.²
¹Tulane University, New Orleans; ²MUSC, Charleston.
Backgroud: Only 20% of donor lungs are used for transplant and 10 y survival of recipients is low. Many patients die within 30 d of…
2018 American Transplant Congress
Urinary TIMP-2 Predicts the Presence and Duration of Delayed Graft Function in DCD Kidney Transplant Recipients
J. Bank,¹ R. Ruhaak,² D. Soonawala,¹ F. Romijn,² C. van Kooten,¹ C. Cobbaert,² H. de Fijter.¹
¹Nephrology, Leiden University Medical Center, Leiden, Netherlands; ²Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, Netherlands.
Introduction: Tissue inhibitor of metalloproteinases-2 (TIMP-2) and insulin-like growth factor-binding protein 7 (IGFBP7) are promising biomarkers in acute kidney injury. Here, we investigated the performance…
2018 American Transplant Congress
Changes in Phenotype, Immune Suppressive, Function, and Gene Expression of Myeloid Derived Suppressor Cells in Patients Given Combined Kidney and Hematopoietic Cell Transplants in a Tolerance Protocol
K. Jensen,¹ P. Zheng,² J. Xuhuai,² A. Saraswathula,¹ J. Scandling,³ S. Busque,⁴ J. Shizuru,⁵ R. Lowsky,⁵ A. Shori,⁴ H. Maecker,² E. Engleman,¹ E. Meyer,⁵ S. Strober.¹
¹Immunology, Stanford School of Medicine, Stanford, CA; ²Human Immune Monitoring Center, Stanford School of Medicine, Stanford, CA; ³Nephrology, Stanford School of Medicine, Stanford, CA; ⁴Surgery, Stanford School of Medicine, Stanford, CA; ⁵Blood & Marrow Transplantation, Stanford School of Medicine, Stanford, CA.
Tolerance induction after combined organ and hematopoietic cell transplantation can be achieved using conditioning with total lymphoid irradiation (TLI) and anti-thymocyte globulin (ATG), in both…
2018 American Transplant Congress
Association of CYP3A5*3*6*7 Metabolic Composites to Tacrolimus Pharmacokinetics in African American and Caucasian Renal Transplant Recipients
K. Tornatore,^1,5 D. Brazeau,² C. Meaney,¹ K. Attwood,^3,4 G. Wilding,⁴ S. Chang,⁵ R. Venuto.⁵
¹Pharmacy, School of Pharmacy, University at Buffalo(UB), Buffalo; ²Pharmaceutical Sciences, College of Pharmacy; University of New England, Portland; ³Biostatistics, Roswell Park Cancer Institute, Buffalo; ⁴Biostatistics, UB School of Public Health, Buffalo; ⁵Nephrology, UB School of Medicine, Buffalo.
Background: Interpatient variability in tacrolimus pharmacokinetics(PK) is due primarily to metabolism by cytochrome P-450 3A5(CYP3A5) isoenzymes. African Americans(AA) require higher tacrolimus doses to achieve comparable…
2018 American Transplant Congress
Absolute Quantification of Plasma Graft-Derived Cell-Free DNA for Diagnosis of Kidney Transplant Rejection
J. Whitlam,¹ L. Ling,² F. Ierino,³ D. Bruno,² H. Slater,² D. Power.¹
¹Austin Health, Heidelberg, Victoria, Australia; ²Murdoch Childrens Research Institute, Parkville, Victoria, Australia; ³St Vincent's Health, Fitzroy, Victoria, Australia.
Aim: To study the performance of droplet digital PCR absolute measurement of graft-derived cell-free DNA (gdcfDNA) for the diagnosis of kidney allograft rejection.Methods: Homozygous deletion…
2018 American Transplant Congress
Molecular Classifiers Can Outperform the Flawed Histologic “Gold Standard” on Which They Are Trained
J. Reeve, P. Halloran.
University of Alberta, Edmonton, Canada.
The histologic diagnosis of rejection in organ transplants is known to be an imperfect gold standard. Therefore, it might be assumed that molecular classifiers built…
2018 American Transplant Congress
Whole-Transcriptome Sequencing to Identify Macaque Immune Gene Variants
A. Haj,¹ J. Karl,¹ R. Wiseman,¹ D. O'Connor.^1,2
¹Department of Pathology and Laboratory Medicine, University of Wisconsin, Madison, WI; ²Wisconsin National Primate Research Center, Madison, WI.
Macaque monkeys are critical in transplantation studies, yet macaque genomics lags significantly behind human genomics. While reliable genotyping methods have been developed for some macaque…
2018 American Transplant Congress
False-Positive Flow-Cytometric T Cell Crossmatch Associated with Blood Type Antigen Expressed on Lymphocytes in ABO Incompatible Kidney Transplantation
D. Iwami,¹ M. Ito,² K. Hotta,¹ H. Higuchi,¹ N. Shinohara.¹
¹Renal and Genitourinary Surgery, Hokkaido University, Graduate School of Medicine, Sapporo, Japan; ²Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan.
Background: Flow-cytometric T cell crossmatch (FTXM) uses live donor lymphocytes to detect anti-donor-human leukocyte antigen (HLA) IgG antibodies. Therefore, the results can be affected by…