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- W3119553621 abstract "Abstract Background Neuroinflammation is associated with various chronic neurological diseases, including epilepsy; however, neuroimaging approaches for visualizing neuroinflammation have not been used in the clinical routine yet. In this study, we used the translocator protein positron emission tomography (PET) with [ 11 C] DPA713 to investigate neuroinflammation in the epileptogenic zone in patients with child-onset focal epilepsy. Methods Patients with intractable focal epilepsy were recruited at the Epilepsy Center of Osaka University; those who were taking any immunosuppressants or steroids were excluded. PET images were acquired for 60 min after intravenous administration of [ 11 C] DPA713. The PET image of [ 11 C] DPA713 was co-registered to individual’s magnetic resonance imaging (MRI), and the standardized uptake value ratio (SUVr) in regions of interest, which were created in non-lesions and lesions, was calculated using the cerebellum as a pseudo-reference region. In the case of epilepsy surgery, the correlation between SUVr in lesions and pathological findings was analyzed. Results Twenty-seven patients (mean age: 11.3 ± 6.2 years, male/female: 17/10) were included in this study. Of these, 85.1% showed increased uptake of [ 11 C] DPA713 in the focal epileptic lesion. Three patients showed epileptic spasms, suggesting partial seizure onset, and all 18 patients with abnormal lesions on MRI were similarly highlighted by significant uptake of [ 11 C] DPA713. DPA713-positive patients had a broad range of etiologies, including focal cortical dysplasia, tumors, infarction, and hippocampal sclerosis. Five out of nine MRI-negative patients showed abnormal [ 11 C] DPA713 uptake. The SUVr of [ 11 C] DPA713 in lesions was significantly higher than that in non-lesions. In seven patients who underwent epilepsy surgery, increased [ 11 C] DPA713 uptake was associated with microglial activation. Conclusions This study indicates that [ 11 C] DPA713 uptake has valuable sensitivity in the identification of epileptic foci in child-onset focal epilepsy, and inflammation is implicated in the pathophysiology in the epileptic foci caused by various etiologies. Further research is required to establish diagnostic tools for identifying focal epileptogenic zones." @default.
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- W3119553621 date "2021-01-06" @default.
- W3119553621 modified "2023-10-16" @default.
- W3119553621 title "Clinical evaluation of neuroinflammation in child-onset focal epilepsy: a translocator protein PET study" @default.
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- W3119553621 doi "https://doi.org/10.1186/s12974-020-02055-1" @default.
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