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Efficacy of Adding Large Doses of Arachidonic Acid to Docosahexaenoic Acid against Restricted Repetitive Behaviors in Individuals with AutismSpectrum Disorders: A Placebo-Controlled Trial | Abstract
ISSN: 2155-6105

Journal of Addiction Research & Therapy
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Research Article

Efficacy of Adding Large Doses of Arachidonic Acid to Docosahexaenoic Acid against Restricted Repetitive Behaviors in Individuals with AutismSpectrum Disorders: A Placebo-Controlled Trial

Kunio Yui1*, Mamiko Koshiba2, Shun Nakamura2, Yuji Kobayashim3 and Masaki Ohnishi4

1Research Institute of Pervasive Developmental Disorders,Ashiya University Graduate School of Education, Ashiya, Japan

2Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Japan

3Information and Planning Department, SRL, Inc,Tatikawa,Tokyo 190-8567, Japan

4Faculty of Pedagogy, University of KinDAi Himeji, Himeji, Japan

*Corresponding Author:
Kunio Yui
Research Institute of Pervasive Developmental Disorders
Ashiya University Graduate School of Education. Rokurokusocho 13-22
Ashiya, Hyogo 659-8511, Japan
Tel: +81 792 23 0661
Fax: +81 797 23 1901
E-mail: [email protected]

Received November 02, 2011; Accepted December 14, 2011; Published December 20, 2011

Citation: Yui K, Koshiba M, Nakamura S, Kobayashim Y, Ohnishi M (2011) Efficacy of Adding Large Doses of Arachidonic Acid to Docosahexaenoic Acid against Restricted Repetitive Behaviors in Individuals with Autism Spectrum Disorders: A Placebo-Controlled Trial. J Addict Res Ther S4:006. doi:10.4172/2155-6105.S4-006

Copyright: © 2011 Yui K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Abstract

Objectives: It has been documented that behavioral addictions resemble substance addiction in many domains, including the repetitive patterns of interests and behavior displayed by addicts and their failure to resist impulses to perform an act that are harmful to themselves or others. Restricted and repetitive patterns of interests and behavior resembling the characteristics of behavioral addictions are also a core feature of autism spectrum disorders (ASD). Impaired delivery of afferent signals has been proposed to be a factor in pathophysiology of ASD. The polyunsaturated fatty acids, arachidonicacid (ARA) and docosahexaenoic acid (DHA) play key roles in the maturation of the brain network. Supplementation of larger doses of ARA added to DHA may therefore improve repetitive and addictive behavior.

Methods: To estimate the effi cacy of this supplementation in individuals with ASD, we conducted a 16-week double-blind, randomized placebo-controlled trial in 13 individuals with ASD. The outcomes were measured using the Aberrant Behavior Checklist (ABC), and the repetitive behavior subdomains of the Autism Diagnostic Interview-Revised (ADI-R). To study the mechanisms underlying the effects of this supplementation regimen, we examined the plasma levels of main polyunsaturated fatty acids (i.e., eicosapentaenoic acid, DHA and ARA).

Results: Our supplementation regimen signifi cantly improved ABC-measured social withdrawal and ADI-R C3 subdomain (stereotyped and repetitive motor mannerisms). Their scores of the ADI-R C3 subdomain were signifi cantly correlated with ABC-measured inappropriate speech (r=0.397, P<0.01).The changes in the plasma ARA levels at the end of the placebo-controlled trial was signifi cantly increased in the treatment group.

Conclusion: The observed improvement in repetitive and addictive behavior might have been related to reduction in the scores of the ABC-measured social withdrawal and ABC-measured inappropriate speech. These fi ndings suggest that improvements in impaired social interactions may contribute to improvements in repetitive and addictive behavior.

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