期刊
JOURNAL OF NEUROENDOCRINOLOGY
卷 20, 期 -, 页码 35-38出版社
WILEY
DOI: 10.1111/j.1365-2826.2008.01673.x
关键词
HPA axis; endocannabinoid; CB1; stress; obesity
The endocannabinoid system (ECS) is a recently identified neuromodulatory system, which is involved in several physiological processes and in disease. For example, the ECS not only represents the biological substrate of marijuana's effects, but also is known to modulate several neuroendocrine axes, including the hypothalamic-pituitary-adrenal (HPA) axis. Although previous pharmacological studies using plant-derived or synthetic cannabinoids have implied a stimulating action on the HPA axis, more recent findings have led to the conclusion that an endogenous cannabinoid tone might exist, which is actually inhibiting the release of both adrenocorticotrophic hormone and glucocorticoids. Studies using mice lacking cannabinoid receptor CB1 have demonstrated that presence and activity of these receptors is essential for the regulation of HPA axis activity. Interestingly, the effects of endocannabinoids on the HPA axis are consistent with their neuromodulatory action on brain neurotransmitter systems. Endocannabinoids have been found to mediate the nongenomic glucocorticoid-induced inhibition of the release of corticotrophin-releasing factor within the paraventricular nucleus of the hypothalamus. Altogether, these observations suggest that alterations of the endocannabinoid tone might be associated with the development of stress-related diseases, including anxiety, depression and obesity.
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