Open Access
Open access
AIMS Medical Science, volume 11, issue 2, pages 137-156

Effects of melatonin on the management of multiple sclerosis: A scoping review on animal studies

Publication type: Journal Article
Publication date: 2024-06-14
wos Q4
SJR: —
CiteScore: —
Impact factor: 0.4
ISSN: 23751576, 2375155X
Abstract
<abstract><sec> <title>Background</title> <p>Multiple sclerosis (MS), is a debilitating neurological disease that currently has various treatments, like disease-modifying therapies, monoclonal antibodies, corticosteroids, and hormonal derivatives. Melatonin has several actions, like regulating circadian rhythms, which are usually used for insomnia. This scoping review aimed to explore the efficacy of melatonin, both as a standalone treatment and in conjunction with other drugs, in the management of MS in animal models.</p> </sec><sec> <title>Methods</title> <p>We searched PubMed, Web of Science, EMBASE, and Google Scholar using (“melatonin” OR “melatonin receptor”) AND (“multiple sclerosis”) AND (“animal”). Animal studies that evaluated the effects of melatonin on the development, progression, and outcomes of MS were included. Human studies and other types of studies like case reports were excluded. We used narrative synthesis for reporting the results.</p> </sec><sec> <title>Results</title> <p>Overall, 21 studies were included, conducted on mice (n = 15) and rats (n = 6). Mostly, studies reported that melatonin led to normal circadian rhythms in animals. Melatonin in doses of both 50 and 100 mg/kg were useful in nociception latency. Melatonin in combination with other drugs like H-89, diisopropylamine dichloroacetate, gibberellins, and IFN-1β improved outcomes, while there was not improved cognition in combination with mesenchymal stem cells. In some tests, male subjects showed significantly better responses. There were controversial results regarding the effects of melatonin on cytokines, but overall, it led to a reduction in proinflammatory cytokines.</p> </sec><sec> <title>Conclusions</title> <p>Melatonin overall demonstrated favorable outcomes regarding oxidative stress, anti-inflammation, and cytokine levels across various doses. It is recommended conducting systematic reviews and meta-analyses with a larger number of primary studies to provide more comprehensive insights.</p> </sec></abstract>
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