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JAMA Neurol:F18-PET可用于轻度认知障碍患者AD风险预测

2018-05-15 zhangfan MedSci原创

研究认为对于轻度认知障碍患者,F18-PET阳性、海马体积降低以及认知下降人群其36个月内阿尔茨海默风险显著增加

部分轻度认知障碍(AMCI)患者可进展为临床阿尔茨海默病(AD),但仍有一部分患者病情可保持稳定,甚至恢复正常。近日研究人员考察了造影剂flutemetamol (F18)在aMCI患者AD风险评估中的应用。

2009-14年间,aMCI患者基线接受F18-PET检查,之后每6个月接受磁共振成像与多种认知临床测试,至多持续3年。研究的主要终点为Kaplan-Meier生存曲线描绘地PET检测到疑似AD的时间。采用Cox比例危险逻辑回归分析考察PET扫描结果、年龄、海马体积和aMCI分期与AD进展的相关性。

232名aMCI患者参与研究,平均年龄71.1岁,98人(42.2%)PET结果为阳性。随访36个月,疑似AD患者81人(36.2%),其中PET阳性患者52人(53.6%),PET 阴性患者29人(22.8%)。单纯β淀粉样蛋白阳性人群的AD进展风险比值比为2.51;若伴海马体积降低则风险增加至5.60;若伴认知下降,则风险增加至8.45。

研究认为对于轻度认知障碍患者,F18-PET阳性、海马体积降低以及认知下降人群其36个月内阿尔茨海默风险显著增加。

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    2018-07-15 feather89
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    2018-12-10 yinhl1978
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    2018-05-16 kafei

    了解了谢谢

    0

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