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[Neuroradiological studies in Rett syndrome]
Yoshimi Tsuda1, Toshiaki Hashimoto, Kenji Mori
1Handicapped Children, Naruto University of Education, Naruto, Tokushima. ytsuda@naruto-u.ac.jp
No to Hattatsu = Brain and Development
|July 19, 2008
Summary
Rett syndrome, a neurodevelopmental disorder, shows decreased N-acetylaspartate (NAA) in the brain. This finding, along with frontal lobe atrophy and reduced blood flow, suggests neuronal dysfunction in affected females.
Area of Science:
- Neuroscience
- Genetics
- Radiology
Background:
- Rett syndrome is a severe neurodevelopmental disorder affecting females, characterized by cognitive and motor deficits.
- Mutations in the MECP2 gene are the primary cause of Rett syndrome.
Observation:
- This study investigated neuroradiological findings in four Rett syndrome cases using MRI, SPECT, and proton magnetic resonance spectroscopy (1H-MRS).
- Three cases were genetically confirmed for MECP2 mutations.
Findings:
- All four patients exhibited decreased N-acetylaspartate (NAA) levels via 1H-MRS.
- MRI revealed frontal cortical atrophy, and SPECT showed reduced frontal lobe blood flow.
Implications:
- Decreased NAA suggests neuronal loss, immaturity, or hypofunction in affected brain regions.
- These neuroradiological findings align with neuropathological studies of Rett syndrome.
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