In this topic, based on the previous study of emotion causing aging, we focus on working memory, which is the most serious injury cognitive components in the early stage of the patients with mild cognitive impairment (MCI), and carry out the related researches from the diagnosis, etiology and pathogenesis, and treatment of MCI. The case-control study is carried out through questionnaire surveys and neuropsychological assessment, the relationships of negative emotions accumulation and onset of MCI are explored, objective indexes of MCI diagnosis are searched with the aid of neuroimaging techniques, such as event-related potentials (ERPs) and functional magnetic resonance imaging (fMRI), and the mechanisms of curative effects of the patients with MCI treated from the liver are explored, which belong to the syndrome of liver-qi stagnation. We hope to make the scientific theory of "aging caused by emotion impairing liver" more convincing, provide the specific and objective evidences for the diagnosis of MCI, and the new perspective for intervention of traditional Chinese medicine (TCM), give new understanding for the theory of "liver controlling facilitating the cursing of qi", and increase the new connotation of the cognitive aging theory of TCM.
本课题在前期情志致衰研究基础上,围绕轻度认知功能障碍(MCI)的诊断、病因病机与治疗,针对MCI患者早期损伤最严重的认知成分- - 工作记忆,展开相关研究。通过问卷调查和神经心理评估进行病例对照研究,探索负性情绪积累与MCI发病的关系;借助ERPs和fMRI等神经影像学技术寻找MCI诊断的客观指标,并探讨从肝论治肝气郁结型MCI的疗效机制,以期把情志伤肝致衰置于更有说服力的科学水平之上,为MCI的诊断提供特异的客观依据,为中医药干预提供新视角,为肝主疏泄和七情内伤赋予新认识,为中医认知衰老理论增添新内涵。
人口老龄化的不断加重使伴随增龄而至的认知功能障碍在疾病谱中所占的比例越来越大,给个人、家庭和社会带来了沉重的负担。本课题以肝主疏泄调畅情志理论为指导,在前期情志致衰研究的基础上,围绕轻度认知功能障碍(MCI)的成因、特点与机理,针对MCI患者早期损伤最严重的认知功能成分之一的工作记忆,开展相关研究。通过MCI 患者病例对照研究,探讨长期负性情绪积累与MCI 的病因学关系;通过研究肝气郁结型aMCI 患者工作记忆损伤的电生理及影像学特征,探索MCI 诊断和疗效评价的客观指标;通过考察疏肝解郁方药对肝气郁结型aMCI 患者工作记忆的改善,探讨其疗效机制。结果如下:①病例对照研究发现MCI患者高负性情绪特质者高于正常对照组(χ2=10.694,P=0.001),OR=5.364,95%CI为(1.774,16.225),提示高负性情绪特质人群更易发生MCI。②与正常对照组相比,在事件相关电位研究中,0-back任务时肝气郁结型aMCI被试的N2波幅增大,P300潜伏期缩短,oddball任务时P300波幅减小;静息态功能磁共振研究中,肝气郁结型aMCI被试海马与右舌回、右距状裂周围皮层之间的功能连接出现明显下降。提示事件相关电位检测和静息态功能磁共振的功能连接分析能够区分认知功能障碍患者和正常中老年人,在MCI早期诊断中有潜在应用价值。③用疏肝法干预12周后,肝郁型aMCI患者认知功能改善,表现为MoCA得分升高较未用药组更为显著,且oddball任务中P300波幅增大,N-back任务下P300潜伏期与N-400波幅恢复到接近正常人水平,提示疏肝法可以改善肝郁型aMCI患者的认知功能,而静息态功能性磁共振显示其改善认知功能的机制可能与海马、内侧前额叶皮质等组成的大脑执行控制网络、默认网络功能改善有关。上述研究结果初步验证了“长期肝失疏泄加速认知老化进程”这一科学假说的合理性,为MCI中医药干预提供新思路,为肝主疏泄和七情内伤赋予新认识,为中医认知衰老理论增添新内涵。
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数据更新时间:2023-05-31
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