James J Collier

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The liver is responsible for glucose synthesis in the fasting state, and glucose uptake, storage, and utilization in the fed state. A phenotypic switch, normally initiated by insulin or glucagon, controls the transition between the two states, which includes transcriptional alterations that regulate metabolic enzyme abundance for multiple metabolic pathways(More)
Hepatic genes crucial for carbohydrate and lipid homeostasis are regulated by insulin and glucose metabolism. However, the relative contributions of insulin and glucose to the regulation of metabolic gene expression are poorly defined in vivo. To address this issue, adenovirus-mediated hepatic overexpression of glucokinase was used to determine the effects(More)
Glucose exerts powerful effects on hepatocyte gene transcription by mechanisms that are incompletely understood. c-Myc regulates hepatic glucose metabolism by increasing glycolytic enzyme gene transcription while concomitantly decreasing gluconeogenic and ketogenic enzyme gene expression. However, the molecular mechanisms by which c-Myc exerts these effects(More)
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