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논문 기본 정보

자료유형
학술저널
저자정보
이지영 (서울대학교) 윤은진 (서울대학교병원) 김유경 (서울특별시보라매병원) 신채원 (경희대학교) 남현우 (서울대학교) 정재민 (서울대학교) 김한준 (서울대학교병원) 전범석 (서울대학교)
저널정보
대한파킨슨병및이상운동질환학회 Journal Of Movement Disorders Journal Of Movement Disorders Vol.12 No.2
발행연도
2019.1
수록면
103 - 112 (10page)

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ObjectiveIt is unclear whether the decline in dopamine transporters (DAT) differs among idiopathic rapid eye movement sleep behavior disorder (iRBD) patients with different levels of olfactory impairment. This study aimed to characterize DAT changes in relation to nonmotor features in iRBD patients by olfactory loss. MethodsThis prospective cohort study consisted of three age-matched groups: 30 polysomnography-confirmed iRBD patients, 30 drug-naïve Parkinson’s disease patients, and 19 healthy controls without olfactory impairment. The iRBD group was divided into two groups based on olfactory testing results. Participants were evaluated for reported prodromal markers and then underwent 18F-FP-CIT positron emission tomography and 3T MRI. Tracer uptakes were analyzed in the caudate, anterior and posterior putamen, substantia nigra, and raphe nuclei. ResultsOlfactory impairment was defined in 38.5% of iRBD patients. Mild parkinsonian signs and cognitive functions were not different between the two iRBD subgroups; however, additional prodromal features, constipation, and urinary and sexual dysfunctions were found in iRBD patients with olfactory impairment but not in those without. Tracer uptake showed significant group differences in all brain regions, except the raphe nuclei. The iRBD patients with olfactory impairment had uptake reductions in the anterior and posterior putamen, caudate, and substantia nigra (p < 0.016 in all, adjusted for age), which ranged from 0.6 to 0.8 of age-normative values. In contrast, those without olfactory impairment had insignificant changes in all regions ranging above 0.8. ConclusionThere was a clear distinction in DAT loss and nonmotor profiles by olfactory status in iRBD.

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