Cited by 511Circadian rhythm and melatoninAutism Spectrum Disorder ResearchGenetics and Neurodevelopmental Disorders

Abnormal melatonin synthesis in autism spectrum disorders

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Melke, J, Goubran Botros, H, Chaste, P, Betancur, C, Nygren, G, Anckarsäter, H, Rastam, M, Ståhlberg, O +14 more·2008·Molecular Psychiatry

Abstract

Melatonin is produced in the dark by the pineal gland and is a key regulator of circadian and seasonal rhythms. A low melatonin level has been reported in individuals with autism spectrum disorders (ASD), but the underlying cause of this deficit was unknown. The ASMT gene, encoding the last enzyme of melatonin synthesis, is located on the pseudo-autosomal region 1 of the sex chromosomes, deleted in several individuals with ASD. In this study, we sequenced all ASMT exons and promoters in individuals with ASD (n=250) and compared the allelic frequencies with controls (n=255). Non-conservative variations of ASMT were identified, including a splicing mutation present in two families with ASD, but not in controls. Two polymorphisms located in the promoter (rs4446909 and rs5989681) were more frequent in ASD compared to controls (P=0.0006) and were associated with a dramatic decrease in ASMT transcripts in blood cell lines (P=2 x 10(-10)). Biochemical analyses performed on blood platelets and/or cultured cells revealed a highly significant decrease in ASMT activity (P=2 x 10(-12)) and melatonin level (P=3 x 10(-11)) in individuals with ASD. These results indicate that a low melatonin level, caused by a primary deficit in ASMT activity, is a risk factor for ASD. They also support ASMT as a susceptibility gene for ASD and highlight the crucial role of melatonin in human cognition and behavior.

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  • The most consistent related finding in prepubertal children, pubertal adolescents and young adults with ASD is reduced melatonin levels in the evening.

    “The most consistent related finding in prepubertal children, pubertal adolescents and young adults with ASD is reduced melatonin levels in the evening99–102.”
  • Variants identified in the promoter of the ASMT gene were specific to individuals with ASD compared with controls and were associated with reduced ASMT activity and melatonin levels.

    “Variants identified in the promoter of the ASMT gene were specific to individuals with ASD compared with controls and were associated with reduced ASMT activity and melatonin levels102.”
  • In patients with ASD, altered function and metabolism of neurotransmitters such as 5-HT and catecholamines, and dysfunction of the serotonergic system, have been reported to contribute to symptomatology.

    “In patients with ASD, altered function and metabolism of neurotransmitters, such as 5′-HT and catecholamines, and dysfunction of the serotonergic system have been reported to contribute to symptomatology [188,192,193,194,195,196].”
  • Low plasma melatonin concentration is a frequent trait in ASD patients, caused by a primary deficit in acetylserotonin-methyl-transferase (ASMT) activity.

    “low plasma melatonin concentration is a frequent trait in ASD patients,100,101caused by a primary deficit in acetylserotonin-melhyl-transferase (ASMT) activity.”

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  1. Smith AC, Dykens E, Greenberg F. Behavioral phenotype of Smith-Magenis syndrome (del 17p11.2). Am J Med Genet 1998; 81: 179-185.

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Authors
Melke, J., Goubran Botros, H., Chaste, P., Betancur, C., Nygren, G., Anckarsäter, H., Rastam, M., Ståhlberg, O., Gillberg, I. C., Delorme, R., Chabane, N., Mouren-Simeoni, M.-C., Fauchereau, F., Durand, C. M., Chevalier, F., Drouot, X., Collet, C., Launay, J.-M., Leboyer, M., Gillberg, C., Bourgeron, T., & study, A. T. P.
Affiliations
  • Institut Pasteur (FR)
  • Inserm (FR)
  • University of Gothenburg (SE)
  • Lund University (SE)
  • Assistance Publique – Hôpitaux de Paris (FR)
  • Centre Hospitalier Universitaire Henri-Mondor (FR)
  • St George's Hospital (GB)
Corresponding author
Bourgeron, T
Venue
Molecular Psychiatry
Published
2007-05-15
Volume
13
Issue
1
Pages
90-98
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W1982054620
Cited by
511
References
50
Citations by year
2026: 15 · 2025: 20 · 2024: 31 · 2023: 24 · 2022: 33 · 2021: 27 · 2020: 37 · 2019: 29 · 2018: 32 · 2017: 21 · 2016: 19 · 2015: 30 · 2014: 23 · 2013: 36 · 2012: 29
FWCI
10.08
Type
journal article
Language
en
Open access
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • HAL (submittedVersion, other-oa)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
  • Institut National de la Santé et de la Recherche Médicale
  • Fondation pour la Recherche Médicale
  • Fondation de France
  • Assistance publique-Hôpitaux de Paris
  • Medical Research Council
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
autism spectrum disorder, melatonin synthesis, melatonin, splicing mutation, melatonin deficiency, genetic susceptibility, circadian rhythm, platelets
MeSH terms
Acetylserotonin O-Methyltransferase, Adolescent, Adult, Autistic Disorder, Child, Female, Humans, Male, Melatonin, Middle Aged, Pedigree, Polymorphism, Genetic, Promoter Regions, Genetic, Reference Values, Case-Control Studies, Matched-Pair Analysis

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