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Neurology:阿尔茨海默病的神经精神症状

2017-04-18 zhangfan MedSci原创

临床阿尔茨海默病伴神经精神症状患者主要表现为睡眠行为障碍与情绪不稳定

研究人员近日就识别与临床阿尔茨海默病(AD)相关神经精神症状(NPS)的局部脑代谢功能障碍开展研究。

研究招募了115名认知正常的参与者,通过使用[18F] PET和脑脊液磷酸化tau蛋白的生物标志物分析分别编入临床AD组(淀粉样蛋白和tau蛋白病变)、无症状的AD风险组(淀粉样蛋白或tau蛋白病变)以及对照组(无淀粉样蛋白和tau蛋白病变),通过回归和基于个体因素的回归模型评估NPS与2年脑代谢变化之间的关系。

研究发现,只有临床前AD组患者NPS得分较高,在后扣带回皮质、腹内侧前额叶皮层和右前脑岛有较高的[18F]摄取。只有在临床前AD组患者2年后的后扣带回皮质功能衰退得分较高。睡眠行为障碍、夜间易怒和情绪不稳定是NPS代谢功能障碍的主要表现。

临床阿尔茨海默病伴神经精神症状患者主要表现为睡眠行为障碍与情绪不稳定,是由于阿尔茨海默病进程中边缘网络代谢功能短暂异常以及后续后扣带回皮质代谢降低造成的。这说明神经精神症状是阿尔茨海默病临床病理生理学的早期表现。

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    2017-10-11 yinhl1978
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