The pediatric neurotransmitter disorders
| Autor: | Stacey Trzcinski, Alex Sokohl, Jacob Taylor, Phillip L. Pearl |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Succinic semialdehyde dehydrogenase deficiency
medicine.medical_specialty Levodopa Glutamate decarboxylase Phenylalanine Biology Glycine encephalopathy Models Biological Pediatrics 03 medical and health sciences 0302 clinical medicine 030225 pediatrics Internal medicine medicine Humans Sepiapterin reductase Aromatic L-amino acid decarboxylase Neurotransmitter Agents Tyrosine hydroxylase Brain Diseases Metabolic Inborn medicine.disease Endocrinology Pediatrics Perinatology and Child Health Neurology (clinical) Nervous System Diseases 030217 neurology & neurosurgery Metabolic Networks and Pathways medicine.drug |
| Zdroj: | Journal of child neurology. 22(5) |
| ISSN: | 0883-0738 |
| Popis: | The pediatric neurotransmitter disorders represent an enlarging group of neurological syndromes characterized by abnormalities of neurotransmitter synthesis and breakdown. The disorders of dopamine and serotonin synthesis are aromatic amino acid decarboxylase deficiency, tyrosine hydroxylase deficiency, and disorders of tetrahydrobiopterin synthesis. Amino acid decarboxylase, tyrosine hydroxylase, sepiapterin reductase, and guanosine triphosphate cyclohydrolase (Segawa disease) deficiencies do not feature elevated serum phenylalanine and require cerebrospinal fluid analysis for diagnosis. Segawa disease is characterized by dramatic and lifelong responsiveness to levodopa. Glycine encephalopathy is typically manifested by refractory neonatal seizures secondary to a defect of the glycine degradative pathway. γ-amino butyric acid (GABA) metabolism is associated with several disorders, including glutamic acid decarboxylase deficiency with nonsyndromic cleft lip/ palate, GABA-transaminase deficiency, and succinic semialdehyde dehydrogenase deficiency. The latter is characterized by elevated γ-hydroxybutyric acid and includes a wide range of neuropsychiatric symptoms as well as epilepsy. Pyridoxine-dependent seizures have now been associated with deficiency of alpha-aminoadipic semialdehyde dehydrogenase, as well as a new variant requiring therapy with pyridoxal-5-phosphate, the biologically active form of pyridoxine. |
| Databáze: | OpenAIRE |
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