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lüll Stimulus/secretion coupling factors in glucose-stimulated insulin secretion: insights gained from a multidisciplinary approach Newgard CB; Lu D; Jensen MV; Schissler J; Boucher A; Burgess S; Sherry ADDiabetes 2002[Dec]; 51 Suppl 3 (ä): S389-93There is a growing appreciation for the complexity of the pathways involved in glucose-stimulated insulin secretion (GSIS) from pancreatic islet beta-cells. In our laboratory, this has stimulated the development of an interdisciplinary approach to the problem. In this study, we review recent studies combining the tools of recombinant adenovirus for gene delivery, the development of novel cell lines that exhibit either robust or weak GSIS, and nuclear magnetic resonance imaging for metabolic fingerprinting of glucose-stimulated cells. Using these tools, we demonstrate a potentially important role for pyruvate carboxylase-mediated pyruvate cycling pathways in the control of GSIS, and discuss potential coupling factors produced by such pathways.|Animals[MESH]|Cell Line[MESH]|Gene Transfer Techniques[MESH]|Glucose/metabolism/*pharmacology[MESH]|Humans[MESH]|Insulin Secretion[MESH]|Insulin/*metabolism[MESH]|Islets of Langerhans/*drug effects/*metabolism[MESH]|Magnetic Resonance Spectroscopy[MESH] |