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Life Sciences

Student Theses and Dissertations

Theses/Dissertations

2004

Obesity

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Life Without Gpr7, The Neuropeptide W1 Receptor: Regulation Of Energy Homeostasis By Gpr7 And Its Endogenous Neuropeptide Ligands, Makoto Ishii Jan 2004

Life Without Gpr7, The Neuropeptide W1 Receptor: Regulation Of Energy Homeostasis By Gpr7 And Its Endogenous Neuropeptide Ligands, Makoto Ishii

Student Theses and Dissertations

Classic lesion experiments from the 1940s have established the hypothalamus as playing an essential role in controlling energy homeostasis. Gold-thioglucose (GTG) induces lesions in the ventromedial nucleus of the hypothalamus (VMH) resulting in hyperphagia and obesity. To identify genes involved in the hypothalamic regulation of energy homeostasis, we employed a screen to search for genes that were dysregulated in GTG induced obese mice. In this screen, GPR7, the endogenous G protein-coupled receptor (GPCR) for the recently identified ligands neuropeptide B (NPB) and neuropeptide W (NPW), was found to be specifically down-regulated after GTG treatment. The physiological role of GPR7 was …