Succinic semialdehyde dehydrogenase deficiency

DENG Xiao-Lu; YIN Fei; XIANG Qiu-Lian; LIU Chen-Tao; PENG Jing

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Chinese Journal of Contemporary Pediatrics ›› 2011, Vol. 13 ›› Issue (9) : 740-742.

Succinic semialdehyde dehydrogenase deficiency

DENG Xiao-Lu, YIN Fei, XIANG Qiu-Lian, LIU Chen-Tao, PENG Jing

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Abstract

Succinic semialdehyde dehydrogenase (SSADH) deficiency is a rare autosomal recessive disorder. This paper reports three cases of SSADH deficiency in infants. The infants developed the symptoms including developmental delay, intellectual disability, hypotonia, hyporeflexia and seizures. The electroencephalogram (EEG) showed background slowing and focal spike discharges in all of 3 patients. Head magnetic resonance imaging (MRI) demonstrated abnormalities in 2 patients, including basal ganglia damage and increased T2-weighted signal in bilateral cerebral peduncles. Urinary organic acid analysis with gas chromatography-mass spectrometry (GC-MS) revealed increased levels of 4-hydroxybutyrate (GHB) in 3 patients. SSADH deficiency was definitely diagnosed based on the clinical manifestations and the results of urinary organic acid analysis in the 3 children. It was concluded that early urine organic acid analysis is essential for children presenting with mental retardation, neuropsychiatric disturbance or epilepsy of unknown etiology.

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DENG Xiao-Lu, YIN Fei, XIANG Qiu-Lian, LIU Chen-Tao, PENG Jing. Succinic semialdehyde dehydrogenase deficiency[J]. Chinese Journal of Contemporary Pediatrics. 2011, 13(9): 740-742

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