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Metabolic Signatures Differentiate Rett Syndrome From Unaffected Siblings.


ABSTRACT: Rett syndrome (RTT, OMIM 312750), a severe neurodevelopmental disorder characterized by regression with loss of spoken language and hand skills, development of characteristic hand stereotypies, and gait dysfunction, is primarily caused by de novo mutations in the X-linked gene Methyl-CpG-binding protein 2 (MECP2). Currently, treatment options are limited to symptomatic management, however, reversal of disease phenotype is possible in mouse models by restoration of normal MECP2 gene expression. A significant challenge is the lack of biomarkers of disease state, disease severity, or treatment response. Using a non-targeted metabolomic approach we evaluated metabolite profiles in plasma from thirty-four people with RTT compared to thirty-seven unaffected age- and gender-matched siblings. We identified sixty-six significantly altered metabolites that cluster broadly into amino acid, nitrogen handling, and exogenous substance pathways. RTT disease metabolite and metabolic pathways abnormalities point to evidence of oxidative stress, mitochondrial dysfunction, and alterations in gut microflora. These observed changes provide insight into underlying pathological mechanisms and the foundation for biomarker discovery of disease severity biomarkers.

SUBMITTER: Neul JL 

PROVIDER: S-EPMC7052375 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Metabolic Signatures Differentiate Rett Syndrome From Unaffected Siblings.

Neul Jeffrey L JL   Skinner Steven A SA   Annese Fran F   Lane Jane J   Heydemann Peter P   Jones Mary M   Kaufmann Walter E WE   Glaze Daniel G DG   Percy Alan K AK  

Frontiers in integrative neuroscience 20200225


Rett syndrome (RTT, OMIM 312750), a severe neurodevelopmental disorder characterized by regression with loss of spoken language and hand skills, development of characteristic hand stereotypies, and gait dysfunction, is primarily caused by <i>de novo</i> mutations in the X-linked gene <i>Methyl-CpG-binding protein 2</i> (<i>MECP2</i>). Currently, treatment options are limited to symptomatic management, however, reversal of disease phenotype is possible in mouse models by restoration of normal <i>  ...[more]

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