Cited by 309Circadian rhythm and melatoninSleep and related disordersSleep and Work-Related Fatigue

Melatonin treatment for age-related insomnia

Zhdanova, Irina V., Wurtman, Richard J., Regan, Meredith M., Taylor, Judith A., Shi, Jian Ping, Leclair, Ojingwa U.·2001·The Journal of Clinical Endocrinology & Metabolism

Abstract

Older people typically exhibit poor sleep efficiency and reduced nocturnal plasma melatonin levels. The daytime administration of oral melatonin to younger people, in doses that raise their plasma melatonin levels to the nocturnal range, can accelerate sleep onset. We examined the ability of similar, physiological doses to restore nighttime melatonin levels and sleep efficiency in insomniac subjects over 50 yr old. In a double-blind, placebo-controlled study, subjects who slept normally (n = 15) or exhibited actigraphically confirmed decreases in sleep efficiency (n = 15) received, in randomized order, a placebo and three melatonin doses (0.1, 0.3, and 3.0 mg) orally 30 min before bedtime for a week. Treatments were separated by 1-wk washout periods. Sleep data were obtained by polysomnography on the last three nights of each treatment period. The physiologic melatonin dose (0.3 mg) restored sleep efficiency (P < 0.0001), acting principally in the midthird of the night; it also elevated plasma melatonin levels (P < 0.0008) to normal. The pharmacologic dose (3.0 mg), like the lowest dose (0.1 mg), also improved sleep; however, it induced hypothermia and caused plasma melatonin to remain elevated into the daylight hours. Although control subjects, like insomniacs, had low melatonin levels, their sleep was unaffected by any melatonin dose.

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Crossref · 10.1210/jcem.86.10.7901

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Authors
Zhdanova, I. V., Wurtman, R. J., Regan, M. M., Taylor, J. A., Shi, J. P., & Leclair, O. U.
Affiliations
Massachusetts Institute of Technology (US)
Corresponding author
Wurtman, Richard J.
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2001-10
Volume
86
Issue
10
Pages
4727-4730
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2097890124
Cited by
308
References
21
Citations by year
2026: 9 · 2025: 8 · 2024: 14 · 2023: 10 · 2022: 16 · 2021: 8 · 2020: 7 · 2019: 12 · 2018: 13 · 2017: 11 · 2016: 9 · 2015: 7 · 2014: 23 · 2013: 16 · 2012: 13
FWCI
4.87
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Massachusetts Institute of Technology
  • National Institutes of Health (1r01ag013667-01, RR 00088)
  • National Institute on Aging (R01 AG 13667)
  • National Center for Research Resources (MO1 RR-02172, M01RR002172, MO1-RR00088, M01RR000088)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
Keywords
melatonin, sleep efficiency, plasma melatonin levels, older adults, nocturnal melatonin secretion, sleep onset, hypothermia, actigraphy
MeSH terms
Age Factors, Aged, Body Temperature, Double-Blind Method, Female, Humans, Sleep Initiation and Maintenance Disorders, Male, Melatonin, Middle Aged

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