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- W3100806037 abstract "Introduction Dravet syndrome (DS) is severe myoclonic epilepsy in infancy and associated with a heterozygous mutation of the gene for the sodium channel alpha 1 subunit (SCN1A). Recently, adult patients with DS have been reported to show parkinsonism, but no corresponding neuroimaging data are available. Here, we present neuroimaging data in 2 adult patients with DS showing parkinsonian symptoms. Case report Case 1: A man who had intractable seizures from the age of 1 year and 2 months was diagnosed with DS at 7 with a mutation in the SCN1A gene. At 18, he had parkinsonian symptoms such as masked face and bradykinesia. At 20, he was admitted to our department. Dopamine transporter single-photon emission computed tomography (DAT SPECT) showed no decrease in striatal binding of 123I–N–ω–fluoropropyl–2β–carbomethoxy–3β–(4–iodophenyl) nortropane (123I-FP-CIT), and myocardial scintigraphy showed no decrease in cardiac uptake of 123I-metaiodobenzylguanidine (123I-MIBG). Levodopa showed no significant improvement in his symptoms. Case 2: A woman who had febrile seizures at 4 months of age and myoclonic seizures at 1 year and 5 months was diagnosed with DS at 31. She had myoclonus, resting tremor, hypertonia, antecollis, crouch gait, and bradykinesia. DAT SPECT imaging showed no decrease in striatal FP-CIT binding, and levodopa did not improve her symptoms. Discussion The normal DAT SPECT and 123I-MIBG results suggest that dopaminergic neurons projecting onto striatal neurons were not impaired in our patients, explaining the lack of response to levodopa. Thus, dopamine imaging can help to guide treatment decisions in patients with DS and parkinsonism." @default.
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- W3100806037 date "2021-03-01" @default.
- W3100806037 modified "2023-09-23" @default.
- W3100806037 title "Dravet syndrome with parkinsonian symptoms and intact dopaminergic neurons: A case report" @default.
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- W3100806037 doi "https://doi.org/10.1016/j.braindev.2020.10.015" @default.
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