期刊
SLEEP MEDICINE REVIEWS
卷 13, 期 4, 页码 257-264出版社
W B SAUNDERS CO LTD
DOI: 10.1016/j.smrv.2008.07.007
关键词
Melatonin; Pineal gland; Biological rhythms; Immune function; Cytokines; Night shift work; Light at night; Circadian disruption; Sleep disturbance; Cancer risk
The pineal hormone melatonin is involved in the circadian regulation and facilitation of steel), the inhibition of cancer development and growth, and the enhancement of immune function. Individuals, such as night shift workers, who are exposed to light at night oil a regular basis experience biological rhythm (i.e., circadian) disruption including circadian phase shifts, nocturnal melatonin suppression, and sleep disturbances. Additionally, these individuals are not only immune Suppressed, but they are also at an increased risk of developing a number of different types of cancer. There is a reciprocal interaction and regulation between sleep and the immune system quite independent of melatonin. Sleep disturbances can lead to immune suppression and a shift to the predominance in cancer-stimulatory cytokines. Some Studies suggest that a shortened duration Of nocturnal Sleep is associated with a higher risk of breast cancer development. The relative individual contributions of sleep disturbance, circadian disruption due to light at night exposure, and related impairments of melatonin production and immune function to the initiation and promotion of cancer in high-risk individuals such as night shift workers ate Unknown. The mutual reinforcement of interacting circadian rhythms of melatonin production, the sleep/wake cycle and immune function may indicate a new role for undisturbed, high quality sleep, and perhaps even more importantly, Uninterrupted darkness, as a previously unappreciated endogenous mechanism of cancer prevention. (C) 2008 Published by Elsevier Ltd.
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