Glucose hypometabolism in the visual cortex proportional to disease severity in patients with essential blepharospasm

被引:7
作者
Suzuki, Yukihisa [1 ,2 ,3 ]
Kiyosawa, Motohiro [1 ,4 ]
Wakakura, Masato [5 ]
Ishii, Kenji [2 ]
机构
[1] Tokyo Med & Dent Univ, Grad Sch, Dept Ophthalmol & Visual Sci, Tokyo, Japan
[2] Tokyo Metropolitan Inst Gerontol, Team Neuroimaging Res, Tokyo, Japan
[3] Mishima Gen Hosp, Japan Community Hlth Care Org, Mishima, Shizuoka, Japan
[4] Kiyosawa Eye Clin, Tokyo, Japan
[5] Inouye Eye Hosp, Tokyo, Japan
基金
日本学术振兴会;
关键词
Blepharospasm; Brain metabolism; Dystonia; Extrastriate cortex; Striate cortex; FUNCTIONAL CONNECTIVITY; CORTICAL-NEURONS; RESPONSES; BRAIN; HYPERMETABOLISM; ACTIVATION; NETWORKS; TOXIN; BLINK; LIGHT;
D O I
10.1016/j.nicl.2019.101995
中图分类号
R445 [影像诊断学];
学科分类号
100207 ;
摘要
Essential blepharospasm (EB) causes difficulty in eyelid opening because of involuntary movements of the orbicularis oculi muscle. Patients with EB have functional visual loss due to sustained eyelid closure. We examined cerebral glucose metabolism in 39 patients with EB (12 men and 27 women; mean age, 52.1 years) by using positron emission tomography with F-18-fluorodeoxyglucose. Forty-eight eye open healthy subjects and 48 eye close healthy subjects served as controls. We analyzed and compared the data between the patients and controls by using both statistical parametric mapping (SPM) and regions of interest (ROIs). We defined ROIs on both sides of the posterior striate cortex, anterior striate cortex, extrastriate cortex, and thalamus. In SPM analysis, glucose hypometabolism were observed in both sides of the extrastriate cortex compared to eye open controls but not to eye close controls. We also observed a significant negative correlation between the Jankovic Rating Scale (JRS) sum score and relative glucose metabolism level in the striate cortex of these patients. ROI analysis, a significant correlation was observed between the JRS sum score and glucose metabolism level in the posterior (right r = - 0.53, P = .0005; left r = - 0.65, P = .00001) and anterior (right r = - 0.33, P = .04; left: r = - 0.37, P = .02) striate cortices of patients with EB. We surmise that the interruption of visual input cause glucose hypometabolism in the visual cortex of patients with EB.
引用
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页数:6
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