Articles tagged "Islets"

2016 American Transplant Congress
In Vivo and In Vitro Characterization of 1.5 mm Ba²⁺-Alginate Macro-Encapsulated Cynomolgus Monkey Islets.
M. Bochenek,¹ J. McGarrigle,¹ J. Mendoza-Elias,¹ E. Marchese,¹ M. Nourmohammadzadeh,¹ Y. Wang,¹ A. Khan,¹ M. Omami,¹ C.-C. Yeh,¹ I. Lacik,² B. Strand,³ J. Oberholzer.¹
¹Transplant Surgery, University of Iliinois at Chicago, Chicago, IL; ²Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Bratislava, Slovakia (Slovak Republic); ³Biotechnology, Norwegian University of Science and Technology, Trondheim, Norway.
Introduction:Micro-encapsulation of islets for the treatment of Type I diabetes has shown limited efficacy in small-scale clinical trials. The lack of success may be related…
2016 American Transplant Congress
Comparison of Outcomes from Patients with Completion versus Total Pancreatectomy with Islet Autotransplantation: A Single-Institution Experience with 120 Consecutive Cases.
G. Yoshimatsu,¹ M. Takita,¹ R. Shahbazov,² M. Lawrence,¹ B. Naziruddin,³ P. Kim,³ M. Levy,⁴ N. Onaca.³
¹Islet Cell Laboratory, Baylor Research Institute, Dallas, TX; ²Department of Surgery, University of Virginia, Charlottesville, VA; ³Transplant Division, VCU Medical Center, Richmond, VA; ⁴Baylor Simmons Transplant Institute, Dallas, TX.
Introduction: Total pancreatectomy (TP) or completion pancreatectomy is considered to effectively eliminate the severe pain from refractory chronic pancreatitis, if prior procedures failed. Islet autotransplantation…
2016 American Transplant Congress
Comparison of Early Engraftment Immunobiology of Xenoislets and Alloislets in a Dual Transplant Model.
K. Samy,¹ B. Martin,² M. Song,¹ B. Collins,¹ E. Gall,¹ J. Cano,² A. Farris,² F. Leopardi,¹ A. Kirk.^1,2
¹Department of Surgery, Duke University Medical Center, Durham, NC; ²Emory University, Atlanta, GA.
Purpose: Successful implementation of neonatal porcine islet (NPI) xenotransplantation requires an understanding of the xenospecific immune elements influencing engraftment. To elucidate these early xenospecific processes,…
2016 American Transplant Congress
Effect of Pylorus Preservation Procedure on Patient and Graft Outcome in Total Pancreatectomy with Islet Autotransplantation.
R. Shahbazov,¹ A. Dabous,² G. Yoshimatsu,² H. Fernandez,² G. Saracino,² B. Naziruddin,² N. Onaca,² P. Kim,² M. Levy.³
¹Department of Surgery, University of Virginia, Charlottsville, VA; ²Baylor Simmons Transplant Institute, Dallas, TX; ³Transplant Division, VCU Medical Center, Richmond, VA.
Introduction: Total pancreatectomy with islet autotransplantation (TPIAT) is an effective treatment to retain pancreatic endocrine function while alleviating intractable pain in Chronic Pancreatitis. The role…
2016 American Transplant Congress
Pancreas After Islet Transplantation – A Successful Treatment Option After a Failed Islet Transplant.
R. Gruessner, N. Ozden, V. Whittaker, V. Aggarwal, A. Gruessner.
Department of Surgery, SUNY Upstate Medical University, Syracuse, NY.
Introduction: Pancreas after islet (PAI) transplantation (tx) is a treatment option for patients seeking insulin independence through a whole organ transplant after a previous, failed…
2016 American Transplant Congress
Distinct Effects of Chronic Hyperglycemia on Cellular and Humoral Alloresponses In Vivo.
N. Bishop,¹ K. Beard,² R. Gill.²
¹Immunology and Microbiology, University of Colorado Denver, Aurora, CO; ²Surgery, University of Colorado Denver, Aurora, CO; ³Surgery, University of Colorado Denver, Aurora, CO.
Background: Diabetes constitutes a significant problem in the transplant recipient. Diabetes is associated with impaired immunity to pathogens but its effect on alloimmunity remains ambiguous.…
2016 American Transplant Congress
Enhanced IL-6 Production Impedes Transplant Tolerance Induction in Lupus-Prone Mice.
B. Stocks, C. Wilson, M. Seto, A. Marshall, D. Moore.
Pediatrics and Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, TN.
Significance: Autoimmunity is a significant barrier to transplantation. Based on previous studies, it is apparent that there are separate genetic regions that control susceptibility to…
2016 American Transplant Congress
Long-Term Islet Xenograft Survival Requires Effective Control of Early Xenogeneic IL-17 Response and Late Xenogeneic IFN-γ Response.
H. Kang,¹ S. Wang,² X. Zhang,³ A. Singh,⁵ L. Zhang,¹ W. Suarez-Pinzon,⁵ S. Miller,⁴ B. Hering,⁵ X. Luo.^1,3,4
¹Medicine, Northwestern University, Chicago, IL; ²Surgery, Tianjin Union Medical Center, Tianjin, China; ³Comprehensive Transplant Center, Northwestern University, Chicago, IL; ⁴Microbiology and Immunology, Northwestern University, Chicago, IL; ⁵Schulze Diabetes Institute, University of Minnesota, Minneapolis, MN.
Introduction: Tolerance induction for xenogeneic islet transplant remains a challenge. We have previously shown that peri-transplant infusion of donor cells treated with 1-ethyl-3-(3'-dimethylaminopropyl)-carbodiimide (ECDI) is…
2016 American Transplant Congress
NK Cells Are Required in B-Cell Dependent, Antibody Mediated Islet Transplant Tolerance.
C. Schuetz, K. Lee, L. Kojima, L. Washburn, L. Liu, W.-H. Liu, J. Kim, J. Markmann.
Dept of Surgery, Transplant Surgery Division, Massachusetts General Hospital, Boston, MA.
Immunologic tolerance to islets has been achieved in various rodent models using antibodies directed at CD45RB and Tim-1. We have shown that this tolerance mechanism…
2016 American Transplant Congress
Successful Human-to-NonHuman Primate Pancreatic Islet Intraportal Xenotransplantation Using a Human Allo-Based Immunosuppression Regimen and Its Potential Pre-Clinical Application.
J. McGarrigle,¹ M. Bochenek,¹ E. Marchese,¹ A. Khan,¹ D. Gutierrez,^1,2 A. Mikalauskaite,¹ B. McCracken,¹ M. Reedy,¹ M. Omami,¹ C.-C. Yeh,¹ M. Spaggiari,¹ M. Nourmohammadzadeh,^1,2 D. Isa,¹ S. Ghani,¹ L.-J. Wang,¹ J. Mendoza-Elias,^1,2 Y. Wang,¹ J. Oberholzer.^1,2
¹Surgery, University of Illinois at Chicago, Chicago; ²Bioengineering, University of Illinois at Chicago, Chicago.
Intraportal pancreatic islet cell transplantation is a successful treatment for type-1 diabetes (T1DM) in humans. Unfortunately, the lack of donor pancreatic organs is a major…