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Articles tagged "Islets"

  • 2017 American Transplant Congress

    Assessment of Simple Indices Based on a Single Fasting Blood Sample in Search for an Optimal Tool to Estimate Beta Cell Function After Islet Transplantation.

    J. Golebiewska,1 J. Solomina,2 E. Konsur,2 K. Cieply,2 L. Basto,2 A. Kotukhov,2 K. Golab,2 C. Thomas,3 A. Debska-Slizien,1 P. Witkowski.2

    1Department of Nephrology, Medical University of Gdansk, Gdansk, Poland; 2Departemt of Surgery, University of Chicago, Chicago; 3Department of Medicine, University of Chicago, Chicago

    Background:Precise yet logistically feasible evaluation of beta-cell function is extremely important after islet allotransplantation. We investigated the utility and possible limitations of indices using only…
  • 2017 American Transplant Congress

    Measurement of Dissolved Oxygen by 19F MRI of Microcapsules Implanted IP in Non-Human Primates.

    S. Safley,1 M. Graham,2 M. Garwood,3 K. Papas,5 B. Weegman,3,4 G. Barber,1 E. Lin,1 J. Leisen,7 A. Sambanis,6 B. Hering,2 C. Weber.1

    1Surgery, Emory University, Atlanta, GA; 2Surgery, University of Minnesota, Minneapolis, MN; 3Radiology, University of Minnesota, Minneapolis, MN; 4Sylvatica Biotech, Inc., Charleston, SC; 5Surgery, University of Arizona, Tucson, AZ; 6School of Chemical and Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA; 7School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA

    Since our encapsulated NHP islet allografts and porcine islet xenografts fail after i.p. transplantation in immunosuppressed NHPs without a cellular or humoral immune response, we…
  • 2017 American Transplant Congress

    IP-10 Monoclonal Antibody Treatment Suppresses Inflammatory Components of IBMIR and Improves Pancreatic Islet Graft Function.

    G. Yoshimatsu,1 C. Chang,1 C. Darden,1 P. Saravanan,1 B. Naziruddin,2 M. Lawrence.1

    1Baylor Scott and White Reseasrch Institute, Dallas, TX; 2Baylor Simmons Transplant Institute, Dallas, TX

    Introduction: An instant blood-mediated inflammatory response (IBMIR) causes acute loss of pancreatic islets. Interferon gamma-induced protein 10 (IP-10) is a key proinflammatory chemokine that may…
  • 2017 American Transplant Congress

    Bioengineering Human Islets to Form Peri-Islet Vessels from Intraislet Endothelial Cells for Improving Human Islet Function.

    G. Loganathan, S. Narayanan, M. Dhanasekaran, A. Patel, W. Tucker, M. Hughes, S. Williams, A. Balamurugan.

    Clinical Islet Laboratory, Dept. of Surgery, Cardiovascular Innovation Institute, University of Louisville, KY

    Native islets in the pancreas have a rich vascular supply however, the current islet isolation technique completely severs the vasculature to islets. As such, these…
  • 2017 American Transplant Congress

    Recognition of Islet Xenografts In Vivo by Non-Obese Diabetic (NOD) Insulin-Specific CD4 T Cells.

    R. Gill, W. Dale, M. Crawford.

    Surgery and Immunology, University of Colorado Denver, Aurora, CO

    Xenogeneic islet transplantation has been one ongoing goal for treating autoimmune Type 1 diabetes. Autoimmune diabetes involves a T cell response restricted to the host…
  • 2017 American Transplant Congress

    Immunosuppressive Role of Pancreas Derived Mesenchymal Stem Cells.

    M. Kanak,1 F. Kunnathodi,2 M. Levy,1,3 M. Lawrence,2 B. Naziruddin.4

    1Transplant Surgery, Virginia Commonwealth University, Richmond, VA; 2Baylor Research Institute, Dallas, TX; 3Hume-Lee Transplant Center, VCU Health System, Richmond, VA; 4Simmons Transplant Institute, Baylor Scott and White Health, Dallas, TX

    BackgroundThe Edmonton protocol revived islet transplantation therapy for Type-1 Diabetic patients. However, Long-term islet function still remains a challenge. Immunosuppression used after islet transplantation contributes…
  • 2017 American Transplant Congress

    Islet Rejection in Autoimmune NOD Mouse Recipients: Implications for Stem Cell Therapies.

    R. Gill,1 M. Coulombe,1 T. Kupfer,1 K. Beard,1 A. Burrack.2

    1Surgery and Immunology, University of Colorado Denver, Aurora, CO; 2University of Minnesota, Minneapolis, MN

    Several efforts are ongoing to use stem cell precursors to generate islet-like tissues suitable for transplantation in autoimmune Type 1 diabetic (T1D) recipients. During the…
  • 2017 American Transplant Congress

    Thrombalexin and Mirococept Synergistically Reduce IBMIR in a Porcine to Rhesus Xenoislet Model.

    M. Manook,1,2 J. Kwun,1 J. Yoon,1 K. Samy,1 A. MacDonald,1 H. Xu,1 R. Smith,3 A. Dorling,3 A. Kirk,1 N. Mamode,2 S. Knechtle.1

    1Surgery, Duke Transplant Center, Durham, NC; 2Renal and Transplant, Guy's and St Thomas'NHS Foundation Trust, London, United Kingdom; 3MRC Centre for Transplantation, King's College, London, United Kingdom

    Introduction: Early activation of coagulation and complement are important factors in the initiation of instant blood mediated inflammation (IBMIR) in xenoislet models. Two novel 'cytotopic'…
  • 2017 American Transplant Congress

    Next-Generation Sequencing-Based Exosome MicroRNA Profiling for Specific Identification of Islet Damage.

    P. Saravanan,1 J. Gu,1 X. Wang,1 P. Nguyen,1 G. Yoshimatsu,1 M. Lawrence,1 B. Naziruddin.2

    1Baylor Scott and White Research Institute, Dallas, TX; 2Baylor Simmons Transplant Institute, Dallas, TX

    Introduction: A significant mass of intraportally transplanted islets undergo damage due to various stress conditions including hypoxia and inflammation. Development of innovative ultrasensitive tests to…
  • 2017 American Transplant Congress

    Long-Term Drug-Free Survival of Tiny Cynomolgus Islet Allografts.

    M. Koulmanda, V. Chipashivili, M. Duggan, T. Strom.

    Surgery and Medicine, Beth Israel Deaconess Medical Center, Boston, MA; Surgery, Massachusetts General Hospital, Boston, MA

    Following upon highly beneficial effects observed with short-term alpha 1-antitrypsin (AAT) treatment in the marginally sized autologous cynomolgus islet transplant model, we are testing the…
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