The effect of melatonin on sleep quality and daytime sleepiness in Parkinson's disease: A systematic review and meta-analysis of randomized placebo-controlled trials
Azzam Zrineh , Rami Akwan , Muhammad M. Elsharkawy , Bashar Douden , Wadi Sleibi , Mohamed Eldesouki
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引用次数: 0
Abstract
Background
Sleep disturbances are common in Parkinson's disease (PD), significantly impacting quality of life. Melatonin may help, but evidence regarding dosage, formulation, and treatment duration remains inconclusive.
Objective
To quantitatively analyze the effect of melatonin on sleep quality and daytime sleepiness in patients with PD.
Methods
We comprehensively searched multiple databases up to February 2025, selecting relevant randomized controlled trials (RCTs). RevMan software was used for analysis. Subgroup analyses included treatment duration (4 weeks vs. 8–12 weeks), dose (≤4 mg vs. >4 mg), and formulation (immediate-release vs. prolonged-release).
Results
Five RCTs (206 patients) were included. Doses ≤4 mg showed no significant improvement in total Pittsburgh Sleep Quality Index (PSQI) scores (MD = −1.26, 95 % CI: −2.72 to 0.20). Doses >4 mg demonstrated a stronger effect (MD = −2.90, 95 % CI: −4.02 to −1.78). Short-term use (4 weeks) significantly improved PSQI scores (MD = −2.43, 95 % CI: −3.98 to −0.88), whereas longer treatment (8–12 weeks) showed a non-significant effect (MD = −1.24, 95 % CI: −3.15 to 0.67). Immediate-release formulations significantly improved PSQI scores (MD = −2.20, 95 % CI: −3.32 to −1.08), while prolonged-release formulations showed no significant effect (MD = −0.61, 95 % CI: −4.15 to 2.93). Melatonin modestly reduced excessive daytime sleepiness measured by the Epworth Sleepiness Scale (ESS) (MD: −0.97, 95 % CI: −1.81, −0.14).
Conclusion
Melatonin may improve sleep quality and reduce daytime sleepiness in PD patients, particularly with short-term use of immediate-release formulations.
期刊介绍:
Sleep Medicine aims to be a journal no one involved in clinical sleep medicine can do without.
A journal primarily focussing on the human aspects of sleep, integrating the various disciplines that are involved in sleep medicine: neurology, clinical neurophysiology, internal medicine (particularly pulmonology and cardiology), psychology, psychiatry, sleep technology, pediatrics, neurosurgery, otorhinolaryngology, and dentistry.
The journal publishes the following types of articles: Reviews (also intended as a way to bridge the gap between basic sleep research and clinical relevance); Original Research Articles; Full-length articles; Brief communications; Controversies; Case reports; Letters to the Editor; Journal search and commentaries; Book reviews; Meeting announcements; Listing of relevant organisations plus web sites.