Melatonin administration in autism spectrum disorder improved sleep parameters, daytime behaviour and had minimal side effects

Sleep

The researchers in this review looked at findings related to melatonin in autism spectrum disorders (ASD), including autistic disorder, Asperger syndrome, Rett syndrome, and pervasive developmental disorders, not otherwise specified. From a search of databases, they were able to find 35 studies that met review’s inclusion criteria. It was possible to perform a meta-analysis on five randomized double-blind, placebo-controlled studies.

They found nine studies which measured melatonin or melatonin metabolites in ASD, all reporting at least one abnormality , for example, abnormal melatonin circadian rhythm or below average physiological levels of melatonin. They found five studies which reported gene abnormalities that could possibly contribute to decreased melatonin production. Six of the studies reported improved daytime behaviour with melatonin use.

They reviewed eighteen studies which covered melatonin treatment in autism spectrum disorder, reporting improvements in sleep duration, sleep onset latency, and night-time awakenings.

The meta-analysis of the trials found showed significant improvements with large effect sizes in sleep duration but not in night-time awakenings, the side effects of melatonin reported in the studies were minimal to none. Despite variations in effect size across the studies, the authors did not discover any evidence of publication bias.. They conclude from the review that melatonin administration in autism spectrum disorder was associated with improved sleep parameters, better daytime behaviour and showed minimal side effects.

Melatonin in autism spectrum disorders: a systematic review and meta-analysis, Rossignol D & Frye R, in Developmental Medicine & Child Neurology, 53: 783–792

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John Northfield

After qualifying as a social worker, John worked in community learning disability teams before getting involved in a number of long-stay hospital closure programmes, working to develop individual plans for people moving into their own homes. He worked for BILD, helping to develop the Quality Network and was editorial lead for the NHS electronic library learning disabilities specialist collection. This led him to found the Learning Disabilities Elf site with Andre Tomlin as a way of making the evidence accessible to practitioners in health and social care. Most recently he has worked as part of Mencap's national quality team and also been involved in a number of national website developments, including the General Medical Council's learning disabilities site.

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