期刊
NEUROSCIENCE
卷 457, 期 -, 页码 220-234出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuroscience.2020.12.010
关键词
photoperiod; circadian; serotonin; dopamine; affect; reward
资金
- National Institutes of Health [NIH R01 MH108562, NIH R01 DA040630, 5T32MH018921-24]
Circadian disruptions and photoperiod impact the serotonin and dopamine systems, both associated with mood and reward-based disorders. These systems play crucial roles in the pathology of mood and reward-based disorders, with environmental factors offering novel insights into therapeutic treatments.
Circadian disruptions, along with altered affective and reward states, are commonly associated with psychiatric disorders. In addition to genetics, the enduring influence of environmental factors in programming neural networks is of increased interest in assessing the underpinnings of mental health. The duration of daylight or photoperiod is known to impact both the serotonin and dopamine systems, which are implicated in mood and reward-based disorders. This review first examines the effects of circadian disruption and photoperiod in the serotonin system in both human and preclinical studies. We next highlight how brain regions crucial for the serotoninergic system (i.e., dorsal raphe nucleus; DRN), and dopaminergic (i.e., nucleus accumbens; NAc and ventral tegmental area; VTA) system are intertwined in overlapping circuitry, and play influential roles in the pathology of mood and reward-based disorders. We then focus on human and animal studies that demonstrate the impact of circadian factors on the dopaminergic system. Lastly, we discuss how environmental factors such as circadian photoperiod can impact the neural circuits that are responsible for regulating affective and reward states, offering novel insights into the biological mechanisms underlying the pathophysiology, systems, and therapeutic treatments necessary for mood and reward-based disorders. (C) 2021 IBRO. Published by Elsevier Ltd. All rights reserved.
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