Cited by 71Autism Spectrum Disorder ResearchGut microbiota and healthChild Nutrition and Feeding Issues

The Gut-Immune-Brain Axis in Autism Spectrum Disorders; A Focus on Amino Acids

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van Sadelhoff, Joris H. J., Perez Pardo, Paula, Wu, Jiangbo, Garssen, Johan, van Bergenhenegouwen, Jeroen, Hogenkamp, Astrid, Hartog, Anita, Kraneveld, Aletta D.·2019·Frontiers in Endocrinology

Abstract

Autism spectrum disorder (ASD) is a range of neurodevelopmental conditions that affect communication and social behavior. Besides social deficits, systemic inflammation, gastrointestinal immune-related problems, and changes in the gut microbiota composition are characteristic for people with ASD. Animal models showed that these characteristics can induce ASD-associated behavior, suggesting an intimate relationship between the microbiota, gut, immune system and the brain in ASD. Multiple factors can contribute to the development of ASD, but mutations leading to enhanced activation of the mammalian target of rapamycin (mTOR) are reported frequently. Hyperactivation of mTOR leads to deficits in the communication between neurons in the brain and to immune impairments. Hence, mTOR might be a critical factor linking the gut-brain-immune axis in ASD. Pharmacological inhibition of mTOR is shown to improve ASD-associated behavior and immune functions, however, the clinical use is limited due to severe side reactions. Interestingly, studies have shown that mTOR activation can also be modified by nutritional stimuli, in particular by amino acids. Moreover, specific amino acids are demonstrated to inhibit inflammation, improve gut barrier function and to modify the microbiota composition. In this review we will discuss the gut-brain-immune axis in ASD and explore the potential of amino acids as a treatment option for ASD, either via modification of mTOR activity, the immune system or the gut microbiota composition.

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  • The gut microbiome likely alters brain functions through various mechanisms including environmental factors, host genetics, host immune response regulation, excretion of metabolites, regulation of neurotransmitters, or neuroactive compounds.

    “the gut microbiome likely alters brain functions through various other mechanisms, including environmental factors (e.g. in utero exposure to infection, maternal conditions, and medications), host genetics, host immune response regulation [12, 57, 58], excretion of metabolites such as tyrosine analogues, p-cresol, 4-ethylphenylsulfate, indoles, lipopolysaccharides and free amino acids [59-62],”

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Research works printed but not linked: 2

  1. [96]De Theije C Neuroimmunomodulation of the Young Brain. Nutrition, a Gut Feeling. Thesis De Theije, C.G.M. Utrecht University Repository, Utrecht (2014).
  2. [195]Vojdani A Lambert J Vojdani E Blood-based markers in autism spectrum disorders. Int Med Rev. (2017) 3: 1– 30. Available online at: https://www.researchgate.net/publication/321642638_Blood-based_markers_in_autism_spectrum_disorders_Blood-based_markers_in_autism_spectrum_disorders

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Authors
van Sadelhoff, J. H. J., Perez Pardo, P., Wu, J., Garssen, J., van Bergenhenegouwen, J., Hogenkamp, A., Hartog, A., & Kraneveld, A. D.
Affiliations
  • The University of Texas MD Anderson Cancer Center (US)
  • Utrecht University (NL)
Corresponding author
Kraneveld, Aletta D.
Venue
Frontiers in Endocrinology
Published
2019-04-16
Volume
10
Pages
247-247
ISSN
1664-2392 (ISSN-L)
OpenAlex
W2940286118
Cited by
71
References
195
Citations by year
2026: 5 · 2025: 7 · 2024: 6 · 2023: 8 · 2022: 11 · 2021: 20 · 2020: 10 · 2019: 4
FWCI
1.43
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Endocrinology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Utrecht University Repository (Utrecht University) (submittedVersion, other-oa)
Funders
Universiteit Utrecht
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Psychiatry and Mental health › Child Nutrition and Feeding Issues
Keywords
autism spectrum disorder, gut-brain-immune axis, amino acids, mTOR hyperactivation, gut microbiota, systemic inflammation, intestinal barrier, nutritional therapy, mTOR inhibition, neurodevelopmental disorders

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