Abstract:
:Six girls between 2 years 9 months and 15 years of age with Rett syndrome were thoroughly investigated. Blood ammonia levels varied between 42 and 123 mumol/L, and serum lactate concentration was slightly elevated in two girls. Electroencephalograms showed a dysrhythmic pattern during wakefulness; during drowsiness and light sleep, bilateral bursts of spike or multispike-and-wave activity were seen in all but the oldest girl. In one of the younger girls, slight cortical atrophy was found on computed tomographic scan. Muscle biopsy was performed on all girls, and electron microscopy revealed abnormal mitochondria. Physical signs such as somatic hypotrophy with extremely small muscle mass, and unsatisfactory weight gain in spite of good appetite are found in Rett syndrome. These attributes, as well as reports of ornithine carbamoyltransferase deficiency, may support a mitochondrial dysfunction. The mitochondrial changes indicate either a mitochondrial mutation or more probably an X-borne modulator gene mutation. Another genetic possibility discussed is the "metabolic interference" of an X-borne allele. Further delineation of such mitochondrial changes may clarify the causal metabolic defect in Rett syndrome.
journal_name
J Child Neuroljournal_title
Journal of child neurologyauthors
Eeg-Olofsson O,al-Zuhair AG,Teebi AS,Daoud AS,Zaki M,Besisso MS,Al-Essa MMdoi
10.1177/088307389000500311subject
Has Abstractpub_date
1990-07-01 00:00:00pages
210-4issue
3eissn
0883-0738issn
1708-8283journal_volume
5pub_type
杂志文章abstract:BACKGROUND:We developed and validated a Spanish seizure screen for children based on a previously validated English seizure screen that could be administered by a trained research assistant in a 2-step process, approximating the clinical diagnostic process of a pediatric epilepsy specialist. This questionnaire was desi...
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