Impacts of aging on circadian rhythm and related sleep disorders.

Autor: Li Y; College of Information Technology, Shanghai Ocean University, Shanghai 201306, China. Electronic address: leeliying@163.com., Tan Y; College of Information Technology, Shanghai Ocean University, Shanghai 201306, China., Zhao Z; College of Information Technology, Shanghai Ocean University, Shanghai 201306, China.
Jazyk: angličtina
Zdroj: Bio Systems [Biosystems] 2024 Feb; Vol. 236, pp. 105111. Date of Electronic Publication: 2023 Dec 29.
DOI: 10.1016/j.biosystems.2023.105111
Abstrakt: Circadian rhythm is an essential component of biology that organizes the internal synchrony of the organism in response to the environment. Aging significantly impacts circadian rhythm and is also associated with specific sleep complaints in mammals, including earlier awakening and decreased sleep consolidation at the end of the night. However, the regulation mechanism of aging on the circadian rhythm is far from clear. To further understand the impact of aging, we use an existing mathematical model of circadian rhythm combined with the aging system to explore the effects of aging on circadian rhythm and two kinds of sleep disorders, familial late sleep syndrome (FASPS) and delayed sleep syndrome (DSPS). We get a few intriguing findings from numerical simulations. Aging weakens rhythmicity by reducing the amplitude of circadian rhythm. Aging exacerbates the sleep pattern of being early to bed and early to rise by shortening the period of circadian rhythm and advancing the entrainment phase. Aging reduces the ability of the circadian rhythm to respond to light. The elderly need stronger light to get entrainment with the environmental light cycle. It is more difficult for the elderly to recover from disturbed light. Especially elderly people take a longer time to overcome jet lag. Aging worsens the "morningness" of FASPS disorder patients and improves the symptoms of DSPS disorder patients. This study helps to better understand the impacts of aging on circadian rhythm and sleep disorders and provides theoretical support for the treatment of circadian disorders in the elderly.
Competing Interests: Declaration of competing interest We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, there is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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