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Oxidative burden and mitochondrial dysfunction in a mouse model of Rett syndrome

ABSTRACT: To identify the detailed molecular causes of the mitochondrial dysfunction, oxidative burden and more vulnerable redox balance in Rett mouse hippocampus, we screened for differential gene expression in the hippocampal CA1 subfield of adult male mice. A whole mouse genome microarray was performed to assess, whether key enzymes of the mitochondrial respiratory chain or major cellular radical scavenging enzymes are affected in this MeCP2-deficient mouse model of Rett syndrome. Comparison of gene expression between male wildtype mice (Mecp2+/y) and mice lacking the MECP2 gene (Mecp2-/y) [B6.129P2(C)-Mecp2tm-1-1Bird (Guy et al. 2001, Nat. Genet. 27: 322-326)]. In total, 9 mice of each genotype were analyzed. The mRNA of groups of 3 animals was pooled to generate 3 independent biological samples, and finally three microarrays were run for each genotype.

ORGANISM(S): Mus musculus

SUBMITTER: Lennart Opitz 

PROVIDER: E-GEOD-32870 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Rett syndrome is an X chromosome-linked neurodevelopmental disorder associated with cognitive impairment, motor dysfunction and breathing irregularities causing intermittent hypoxia. Evidence for impaired mitochondrial function is also accumulating. A subunit of complex III is among the potentially dys-regulated genes, the inner mitochondrial membrane is leaking protons, brain ATP levels seem reduced, and Rett patient blood samples confirm increased oxidative damage. We therefore screened for mi  ...[more]

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