Dmbx1 is essential in agouti-related protein action

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Dmbx1 is essential in agouti-related protein action.

Dmbx1 is a paired-class homeodomain transcription factor. We show here that mice deficient in Dmbx1 exhibit severe leanness associated with hypophagia and hyperactivity and that isolation of a Dmbx1(-/-) mouse from its cohabitants induces self-starvation, sometimes leading to death, features similar to those of anorexia nervosa in humans. Interestingly, overexpression of agouti in Dmbx1(-/-) mi...

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Transcriptional regulation of agouti-related protein (Agrp) in transgenic mice.

Agouti-related protein (Agrp) encodes a hypothalamic neuropeptide that promotes positive energy balance by stimulating food intake and reducing energy expenditure. Agrp expression in the brain is restricted to neurons within the arcuate nucleus of the hypothalamus, and expression levels are elevated as a consequence of food deprivation. We tested a series of bacterial artificial chromosome repo...

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A polymorphism in the human agouti-related protein is associated with late-onset obesity.

The mouse agouti-related protein (AGRP) is a powerful appetite effector that results in hyperphagia and the development of obesity when administered intracerebroventricularly or when overexpressed in transgenic mice. Animal studies have also shown that exogenous administration of AGRP predisposes toward hedonic intake of high fat and high sucrose diets. The human ortholog (hAGRP) maps on chromo...

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Agouti-related protein neuron circuits that regulate appetite.

New tools for mapping and manipulating molecularly defined neural circuits have improved the understanding of how the central nervous system regulates appetite. Studies that focused on Agouti-related protein neurons, a starvation-sensitive hypothalamic population, have identified multiple circuit elements that can elicit or suppress feeding behavior. Distinct axon projections of this neuron pop...

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Characterization of Agouti-related protein binding to melanocortin receptors.

Agouti-related protein (AGRP) is a naturally occurring antagonist of melanocortin action that is thought to play an important role in the hypothalamic control of feeding behavior. The exact mechanism of AGRP and Agouti protein action has been difficult to examine, in part because of difficulties in producing homogeneous forms of these molecules that can be used for direct binding assays. In thi...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2007

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.0707328104