Abstract
Early diagnosis and treatment for autism spectrum disorder (ASD) pose challenges. The current diagnostic approach for ASD is mainly clinical assessment of patient behaviors. Biomarkers-based identification of ASD would be useful for pediatricians. Currently, there is no specific treatment for ASD, and evidence for the efficacy of alternative treatments remains inconclusive. The prevalence of ASD is increasing, and it is becoming more urgent to find the pathogenesis of such disorder. Metabolomic studies have been used to deeply investigate the alteration of metabolic pathways, including those associated with ASD. Metabolomics is a promising tool for identifying potential biomarkers and possible pathogenesis of ASD. This review comprehensively summarizes and discusses the abnormal metabolic pathways in ASD children, as indicated by evidence from metabolomic studies in urine and blood. In addition, the targeted interventions that could correct the metabolomic profiles relating to the improvement of autistic behaviors in affected animals and humans have been included. The results revealed that the possible underlying pathophysiology of ASD were alterations of amino acids, reactive oxidative stress, neurotransmitters, and microbiota-gut-brain axis. The potential common pathways shared by animal and human studies related to the improvement of ASD symptoms after pharmacological interventions were mammalian-microbial co-metabolite, purine metabolism, and fatty acid oxidation. The content of this review may contribute to novel biomarkers for the early diagnosis of ASD and possible therapeutic paradigms.

References
Amminger GP, Berger GE, Schäfer MR et al (2007) Omega-3 fatty acids supplementation in children with autism: a double-blind randomized, placebo-controlled pilot study. Biol Psychiatry 61:551–553
Anwar A, Abruzzo PM, Pasha S et al (2018) Advanced glycation endproducts, dityrosine and arginine transporter dysfunction in autism: a source of biomarkers for clinical diagnosis. Mol Autism 9:3
Bae YS, Choi MK, Lee WJ (2010) Dual oxidase in mucosal immunity and host-microbe homeostasis. Trends Immunol 31:278–287
Behnia F, Parets SE, Kechichian T et al (2015) Fetal DNA methylation of autism spectrum disorders candidate genes: association with spontaneous preterm birth. Am J Obstet Gynecol 212:533.e531-533.e539
Beloborodova N, Bairamov I, Olenin A et al (2012) Effect of phenolic acids of microbial origin on production of reactive oxygen species in mitochondria and neutrophils. J Biomed Sci 19:89
Bent S, Lawton B, Warren T et al (2018) Identification of urinary metabolites that correlate with clinical improvements in children with autism treated with sulforaphane from broccoli. Mol Autism 9:35
Bitar T, Mavel S, Emond P et al (2018) Identification of metabolic pathway disturbances using multimodal metabolomics in autistic disorders in a middle eastern population. J Pharm Biomed Anal 152:57–65
Cai J, Ding L, Zhang J-S et al (2016) Elevated plasma levels of glutamate in children with autism spectrum disorders. NeuroReport 27:272
Chang S, Linderholm A, Franzi L et al (2013) Dual oxidase regulates neutrophil recruitment in allergic airways. Free Radic Biol Med 65:38–46
Chaste P, Leboyer M (2012) Autism risk factors: genes, environment, and gene-environment interactions. Dialogues Clin Neurosci 14:281–292
Chauhan A, Chauhan V (2006) Oxidative stress in autism. Pathophysiology 13:171–181
Chen Q, Qiao Y, Xu XJ et al (2019) Urine organic acids as potential biomarkers for autism-spectrum disorder in Chinese children. Front Cell Neurosci 13:150
Cogram P, Alkon DL, Crockford D et al (2020) Chronic bryostatin-1 rescues autistic and cognitive phenotypes in the fragile x mice. Sci Rep 10:18058
Cohen BI (2002) The significance of ammonia/gamma-aminobutyric acid (gaba) ratio for normality and liver disorders. Med Hypotheses 59:757–758
Cozzolino R, De Magistris L, Saggese P et al (2014) Use of solid-phase microextraction coupled to gas chromatography–mass spectrometry for determination of urinary volatile organic compounds in autistic children compared with healthy controls. Anal Bioanal Chem 406:4649–4662
da Silva Montenegro EM, Costa CS, Campos G et al (2020) Meta-analyses support previous and novel autism candidate genes: outcomes of an unexplored Brazilian cohort. Autism Res 13:199–206
Damodaran LPM, Arumugam G (2011) Urinary oxidative stress markers in children with autism. Redox Rep 16:216–222
Delaye J-B, Patin F, Lagrue E et al (2018) Post hoc analysis of plasma amino acid profiles: towards a specific pattern in autism spectrum disorder and intellectual disability. Ann Clin Biochem 55:543–552
Delwing D, Delwing D, Bavaresco CS et al (2008) Protective effect of nitric oxide synthase inhibition or antioxidants on brain oxidative damage caused by intracerebroventricular arginine administration. Brain Res 1193:120–127
Diémé B, Mavel S, Blasco H et al (2015) Metabolomics study of urine in autism spectrum disorders using a multiplatform analytical methodology. J Proteome Res 14:5273–5282
Dietert RR, Dietert JM, Dewitt JC (2011) Environmental risk factors for autism. Emerg Health Threats J 4:7111–7111
El-Ansary A, Chirumbolo S, Bhat RS et al (2020) The role of lipidomics in autism spectrum disorder. Mol Diagn Ther 24:31–48
Emberti Gialloreti L, Curatolo P (2018) Autism spectrum disorder: why do we know so little? Front Neurol 9:670–670
Emond P, Mavel S, Aïdoud N et al (2013) Gc-ms-based urine metabolic profiling of autism spectrum disorders. Anal Bioanal Chem 405:5291–5300
Espinós C, Pineda M, Martinez Rubio MD et al (2009) Mutations in the urocanase gene uroc1 are associated with urocanic aciduria. J Med Genet 46:407–411
Fattorusso A, Di Genova L, Dell’Isola GB et al (2019) Autism spectrum disorders and the gut microbiota. Nutrients 11:521
Frye RE (2015) Metabolic and mitochondrial disorders associated with epilepsy in children with autism spectrum disorder. Epilepsy Behav 47:147–157
Gevi F, Belardo A, Zolla L (2020) A metabolomics approach to investigate urine levels of neurotransmitters and related metabolites in autistic children. Biochim Biophys Acta Mol Basis Dis 1866:165859
Gevi F, Zolla L, Gabriele S et al (2016) Urinary metabolomics of young Italian autistic children supports abnormal tryptophan and purine metabolism. Mol Autism 7:47
Ghezzo A, Visconti P, Abruzzo PM et al (2013) Oxidative stress and erythrocyte membrane alterations in children with autism: correlation with clinical features. PLoS ONE 8:e66418
Glinton KE, Elsea SH (2019) Untargeted metabolomics for autism spectrum disorders: current status and future directions. Front Psych 10:647–647
Görker I, Tüzün U (2005) Autistic-like findings associated with a urea cycle disorder in a 4-year-old girl. J Psychiatry Neurosci 30:133–135
Grimaldi R, Gibson GR, Vulevic J et al (2018) A prebiotic intervention study in children with autism spectrum disorders (asds). Microbiome 6:133
Hannon E, Schendel D, Ladd-Acosta C et al (2018) Elevated polygenic burden for autism is associated with differential DNA methylation at birth. Genome Med 10:19
Hansen SN, Schendel DE, Parner ET (2015) Explaining the increase in the prevalence of autism spectrum disorders: the proportion attributable to changes in reporting practices. JAMA Pediatr 169:56–62
Hassan T, Abdelrahman H, Fattah N et al (2013) Blood and brain glutamate levels in children with autistic disorder. Res Autism Spectr Disord 7:541–548
Horder J, Petrinovic MM, Mendez MA et al (2018) Glutamate and gaba in autism spectrum disorder—a translational magnetic resonance spectroscopy study in man and rodent models. Transl Psychiatry 8:106
Huerta M, Lord C (2012) Diagnostic evaluation of autism spectrum disorders. Pediatr Clin N Am 59:103–xi
Kałużna-Czaplińska J (2011) Noninvasive urinary organic acids test to assess biochemical and nutritional individuality in autistic children. Clin Biochem 44:686–691
Kang D-W, Adams JB, Coleman DM et al (2019) Long-term benefit of microbiota transfer therapy on autism symptoms and gut microbiota. Sci Rep 9:5821
Kelly RS, Boulin A, Laranjo N et al (2019) Metabolomics and communication skills development in children; evidence from the ages and stages questionnaire. Metabolites 9:42
Kuwabara H, Yamasue H, Koike S et al (2013) Altered metabolites in the plasma of autism spectrum disorder: a capillary electrophoresis time-of-flight mass spectroscopy study. PLoS ONE 8:e73814
Ladd-Acosta C, Hansen KD, Briem E et al (2014) Common DNA methylation alterations in multiple brain regions in autism. Mol Psychiatry 19:862–871
Li Q, Han Y, Dy ABC et al (2017) The gut microbiota and autism spectrum disorders. Front Cell Neurosci 11:120–120
Liang Y, Ke X, Xiao Z et al (2020a) Untargeted metabolomic profiling using UHPLC-QTOF/MS reveals metabolic alterations associated with autism. BioMed Res Int 2020:6105608
Liang Y, Xiao Z, Ke X et al (2020b) Urinary metabonomic profiling discriminates between children with autism and their healthy siblings. Med Sci Monit 26:e926634
Liu A, Zhou W, Qu L et al (2019) Altered urinary amino acids in children with autism spectrum disorders. Front Cell Neurosci 13:7
Lussu M, Noto A, Masili A et al (2017) The urinary (1) h-nmr metabolomics profile of an Italian autistic children population and their unaffected siblings. Autism Res 10:1058–1066
Lv QQ, You C, Zou XB et al (2018) Acyl-carnitine, c5dc, and c26 as potential biomarkers for diagnosis of autism spectrum disorder in children. Psychiatry Res 267:277–280
Mavel S, Nadal-Desbarats L, Blasco H et al (2013) 1h–13c nmr-based urine metabolic profiling in autism spectrum disorders. Talanta 114:95–102
Mazahery H, Stonehouse W, Delshad M et al (2017) Relationship between long chain n-3 polyunsaturated fatty acids and autism spectrum disorder: systematic review and meta-analysis of case-control and randomised controlled trials. Nutrients 9:155
McGuinness G, Kim Y (2020) Sulforaphane treatment for autism spectrum disorder: a systematic review. EXCLI J 19:892–903
Meguid NA, Dardir AA, Abdel-Raouf ER et al (2011) Evaluation of oxidative stress in autism: defective antioxidant enzymes and increased lipid peroxidation. Biol Trace Elem Res 143:58–65
Melke J, Goubran Botros H, Chaste P et al (2008) Abnormal melatonin synthesis in autism spectrum disorders. Mol Psychiatry 13:90–98
Ming X, Stein TP, Barnes V et al (2012) Metabolic perturbance in autism spectrum disorders: a metabolomics study. J Proteome Res 11:5856–5862
Ming X, Stein TP, Brimacombe M et al (2005) Increased excretion of a lipid peroxidation biomarker in autism. Prostaglandins Leukot Essent Fatty Acids 73:379–384
Mitsubuchi H, Nakamura K, Matsumoto S et al (2008) Inborn errors of proline metabolism. J Nutr 138:2016S-2020S
Monné M, Vozza A, Lasorsa FM et al (2019) Mitochondrial carriers for aspartate, glutamate and other amino acids: a review. Int J Mol Sci 20:4456
Mussap M, Noto A, Fanos V (2016) Metabolomics of autism spectrum disorders: early insights regarding mammalian-microbial cometabolites. Expert Rev Mol Diagn 16:869–881
Mussap M, Siracusano M, Noto A et al (2020) The urine metabolome of young autistic children correlates with their clinical profile severity. Metabolites 10:476
Nadal-Desbarats L, Aïdoud N, Emond P et al (2014) Combined 1h-nmr and 1h–13c hsqc-nmr to improve urinary screening in autism spectrum disorders. Analyst 139:3460–3468
Nadeem A, Fayaz Ahmad S, Al-Harbi N et al (2019) Nrf2 activator, sulforaphane ameliorates autism-like symptoms through suppression of th17 related signaling and rectification of oxidant-antioxidant imbalance in periphery and brain of btbr t+tf/j mice. Behav Brain Res 364:213–224
Naushad SM, Jain JM, Prasad CK et al (2013) Autistic children exhibit distinct plasma amino acid profile. Indian J Biochem Biophys 50:474–478
Naviaux JC, Schuchbauer MA, Li K et al (2014) Reversal of autism-like behaviors and metabolism in adult mice with single-dose antipurinergic therapy. Transl Psychiatry 4:e400–e400
Naviaux JC, Wang L, Li K et al (2015) Antipurinergic therapy corrects the autism-like features in the fragile x (fmr1 knockout) mouse model. Mol Autism 6:1
Naviaux RK (2014) Metabolic features of the cell danger response. Mitochondrion 16:7–17
Naviaux RK, Curtis B, Li K et al (2017) Low-dose suramin in autism spectrum disordera: a small, phase i/ii, randomized clinical trial. Ann Clin Transl Neurol 4:491–505
Niu X, Zheng S, Liu H et al (2018) Protective effects of taurine against inflammation, apoptosis, and oxidative stress in brain injury. Mol Med Rep 18:4516–4522
Noto A, Fanos V, Barberini L et al (2014) The urinary metabolomics profile of an Italian autistic children population and their unaffected siblings. J Maternal Fetal Neonatal Med 27(Suppl 2):46–52
Novarino G, El-Fishawy P, Kayserili H et al (2012) Mutations in bckd-kinase lead to a potentially treatable form of autism with epilepsy. Science 338:394–397
Olesova D, Galba J, Piestansky J et al (2020) A novel UHPLC-MS method targeting urinary metabolomic markers for autism spectrum disorder. Metabolites 10:443
Orozco JS, Hertz-Picciotto I, Abbeduto L et al (2019) Metabolomics analysis of children with autism, idiopathic-developmental delays, and down syndrome. Transl Psychiatry 9:243
Palmieri L, Papaleo V, Porcelli V et al (2010) Altered calcium homeostasis in autism-spectrum disorders: evidence from biochemical and genetic studies of the mitochondrial aspartate/glutamate carrier agc1. Mol Psychiatry 15:38–52
Parletta N, Niyonsenga T, Duff J (2016) Omega-3 and omega-6 polyunsaturated fatty acid levels and correlations with symptoms in children with attention deficit hyperactivity disorder, autistic spectrum disorder and typically developing controls. PLoS ONE 11:e0156432
Rangel-Huerta OD, Gomez-Fernández A, de la Torre-Aguilar MJ et al (2019) Metabolic profiling in children with autism spectrum disorder with and without mental regression: preliminary results from a cross-sectional case–control study. Metabolomics 15:99
Safiulina D, Peet N, Seppet E et al (2006) Dehydroepiandrosterone inhibits complex i of the mitochondrial respiratory chain and is neurotoxic in vitro and in vivo at high concentrations. Toxicol Sci 93:348–356
Singh K, Connors SL, Macklin EA et al (2014) Sulforaphane treatment of autism spectrum disorder (ASD). Proc Natl Acad Sci USA 111:15550–15555
Smith AM, King JJ, West PR et al (2019) Amino acid dysregulation metabotypes: potential biomarkers for diagnosis and individualized treatment for subtypes of autism spectrum disorder. Biol Psychiatry 85:345–354
Tirouvanziam R, Obukhanych TV, Laval J et al (2012) Distinct plasma profile of polar neutral amino acids, leucine, and glutamate in children with autism spectrum disorders. J Autism Dev Disord 42:827–836
Toczylowska B, Zieminska E, Senator P et al (2020) Hippocampal metabolite profiles in two rat models of autism: NMR-based metabolomics studies. Mol Neurobiol 57:3089–3105
Wang H, Liang S, Wang M et al (2016) Potential serum biomarkers from a metabolomics study of autism. J Psychiatry Neurosci 41:27–37
Wang L, Christophersen CT, Sorich MJ et al (2012) Elevated fecal short chain fatty acid and ammonia concentrations in children with autism spectrum disorder. Dig Dis Sci 57:2096–2102
West PR, Amaral DG, Bais P et al (2014) Metabolomics as a tool for discovery of biomarkers of autism spectrum disorder in the blood plasma of children. PLoS ONE 9:e112445
Willets JM, Lunec J, Williams AC et al (1993) Neurotoxicity of nicotinamide derivatives. Biochem Soc Trans 21:299S-299S
Williams AC, Pall HS, Steventon GB et al (1993) N-methylation of pyridines and Parkinson’s disease. Adv Neurol 60:194–196
Wu Z, Huang S, Zou J et al (2020) Autism spectrum disorder (ASD): disturbance of the melatonin system and its implications. Biomed Pharmacother 130:110496
Xiong X, Liu D, He W et al (2019) Identification of gender-related metabolic disturbances in autism spectrum disorders using urinary metabolomics. Int J Biochem Cell Biol 115:105594
Xiong X, Liu D, Wang Y et al (2016) Urinary 3-(3-hydroxyphenyl)-3-hydroxypropionic acid, 3-hydroxyphenylacetic acid, and 3-hydroxyhippuric acid are elevated in children with autism spectrum disorders. Biomed Res Int 2016:9485412
Yap IKS, Angley M, Veselkov KA et al (2010) Urinary metabolic phenotyping differentiates children with autism from their unaffected siblings and age-matched controls. J Proteome Res 9:2996–3004
Yorbik O, Sayal A, Akay C et al (2002) Investigation of antioxidant enzymes in children with autistic disorder. Prostaglandins Leukot Essent Fatty Acids 67:341–343
Yui K, Koshiba M, Nakamura S et al (2012) Effects of large doses of arachidonic acid added to docosahexaenoic acid on social impairment in individuals with autism spectrum disorders: a double-blind, placebo-controlled, randomized trial. J Clin Psychopharmacol 32:200–206
Yui K, Tanuma N, Yamada H et al (2017) Decreased total antioxidant capacity has a larger effect size than increased oxidant levels in urine in individuals with autism spectrum disorder. Environ Sci Pollut Res 24:9635–9644
Funding
This work was supported by the Senior Research Scholar grant from the National Research Council of Thailand (S.C.C.), the Thailand Science Research and Innovation MRG6280014 (C.T.), the NSTDA Research Chair grant from the National Science and Technology Development Agency Thailand (N.C.), and the Chiang Mai University Center of Excellence Award Thailand (N.C.). National Institute of General Medical Sciences of the National Institutes of Health (P20GM125503) award to I.N.
Author information
Authors and Affiliations
Contributions
NL, CT, NB, OL, and SCC developed the study concept. NL and CT drafted the manuscript. OL, IN, NC, and SCC provided critical edits and revisions. All of the authors provided revisions and approved the final version of the paper for submission.
Corresponding author
Ethics declarations
Conflict of interest
The authors have no conflicts of interest to disclose.
Additional information
Publisher's note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Likhitweerawong, N., Thonusin, C., Boonchooduang, N. et al. Profiles of urine and blood metabolomics in autism spectrum disorders. Metab Brain Dis 36, 1641–1671 (2021). https://doi.org/10.1007/s11011-021-00788-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11011-021-00788-3