JAMA Neurol:亨廷顿病早期运动症状与脑代谢的关系

2017-07-04 zhangfan MedSci原创

研究发现,对于亨廷顿舞蹈病患者,其纹状体代谢与临床疾病的严重程度相关,区域性的高代谢是代偿性表象与运动评分减少相关。这种代偿性的代谢增加,特别是小脑区域,可能导致其他结构域损伤进一步加重运动障碍症状。该研究有助于亨廷顿舞蹈病患者高代谢脑区运动的临床意义的理解

脑代谢减弱与临床退化过程结果相关,但亨廷顿舞蹈病(HD)患者时常表现出区域性的脑代谢增高,其原因尚不清楚。近日研究人员探讨了早期HD患者脑代谢减退和区域高代谢之间的关系。

研究从2001年开始至2016年结束,60名症状性患者以及15名对照志愿者参与。对参与者进行正电子发射断层脑代谢扫描、亨廷顿病分级评测。主要终点是通过统计参数映射软件(SPM5)评价的患者与对照组之间的脑代谢程度差异。

HD患者中,36.7%为女性,平均年龄44.6岁;对照者中,46.7%为女性平均年龄42.2岁。统计参数映射显示,纹状体区与所有运动严重程度评分显著相关。高代谢与叶功能减退(Z评分=3.95,P<0.001)、舌回(Z评分=4.31,P<0.001)和小脑脚(Z评分= 3.77,P< 001)的得分呈负相关。运动成绩差与下壁小叶、前扣带、下颞叶、齿状核、小脑小叶以及双侧小脑运动区相对应区域的高代谢值有关。

研究发现,对于亨廷顿舞蹈病患者,其纹状体代谢与临床疾病的严重程度相关,区域性的高代谢是代偿性表象与运动评分减少相关。这种代偿性的代谢增加,特别是小脑区域,可能导致其他结构域损伤进一步加重运动障碍症状。该研究有助于亨廷顿舞蹈病患者高代谢脑区运动的临床意义的理解。

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    2018-01-07 yinhl1978
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