Abstract
Excessive consumption of high-energy, palatable food contributes to obesity, which results in the metabolic syndrome, heart disease, type-2 diabetes and death. Current knowledge on the function of the hypothalamus as the brain ‘feeding centre’ recognizes this region as the main regulator of body weight in the central nervous system. Because of their intrinsically fast and adaptive activities, feeding-controlling neural circuitries are endowed with synaptic plasticity modulated by neurotransmitters and hormones that act at different hierarchical levels of integration. In the hypothalamus, among the chemical mediators involved in this integration, endocannabinoids (eCBs) are ideal candidates for the fast (that is, non-genomic), stress-related fine-tuning of neuronal functions. In this article, we overview the role of the eCB system (ECS) in the control of energy intake, and particularly in the consumption of high-energy, palatable food, and discuss how such a role is affected in the brain by changes in the levels of feeding-regulated hormones, such as the adipose tissue-derived anorexigenic mediator leptin, as well as by high-fat diets. The understanding of the molecular mechanisms underlying the neuronal control of feeding behaviours by eCBs offers many potential opportunities for novel therapeutic approaches against obesity. Highlights of the latest advances in the development of strategies that minimize central ECS overactivity in ‘western diet’-driven obesity are discussed.
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This article is published as part of a supplement sponsored by the Université Laval's Research Chair in Obesity in an effort to inform the public on the causes, consequences, treatments, and prevention of obesity.
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Cristino, L., Palomba, L. & Di Marzo, V. New horizons on the role of cannabinoid CB1 receptors in palatable food intake, obesity and related dysmetabolism. Int J Obes Supp 4 (Suppl 1), S26–S30 (2014). https://doi.org/10.1038/ijosup.2014.8
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DOI: https://doi.org/10.1038/ijosup.2014.8
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