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新式眼部检查 或助提早发现老年痴呆

2017-08-22 06:47:50   中国青年网

本报综合消息

由于阿尔茨海默氏症(俗称老年痴呆症)早期症状不明显,等到确诊时,患者病情可能已经相当严重。美国锡达斯—赛奈医疗中心的研究人员研究出一种新式无创眼部检查方法,可以在老年痴呆症状出现前20年发现这一病症。

近年来,医生借助正电子发射计算机断层扫描(PET)检查患者大脑来确诊老年痴呆症,但这种检查既价格高,又是有创检查。锡达斯—赛奈医疗中心的研究团队在16名老年痴呆症患者身上开展临床试验,让他们喝下含有姜黄色素的溶液。姜黄色素会让视网膜上的淀粉样蛋白斑变得“明亮”,可通过无创视网膜扫描观察到。经与他们的PET扫描结果对比,并对比一些健康年轻人的扫描结果,研究人员发现,这种新式无创眼部检查能达到与PET相同的准确率。

英国《每日邮报》报道,上述研究结果表明,视网膜检查可为老年痴呆症诊断提供可靠信息。

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