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首页> 外文期刊>The journals of gerontology.Series A. Biological sciences and medical sciences >Photobiomodulation Using a Low-Level Light-Emitting Diode Improves Cognitive Dysfunction in the 5XFAD Mouse Model of Alzheimer's Disease
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Photobiomodulation Using a Low-Level Light-Emitting Diode Improves Cognitive Dysfunction in the 5XFAD Mouse Model of Alzheimer's Disease

机译:使用低水平发光二极管的光致调节改善了阿尔茨海默病的5xFAD小鼠模型中的认知功能障碍

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Photobiomodulation using low-level light-emitting diode can be rapidly applied in neurological and physiological disorders safely and noninvasively. Photobiomodulation is effective for chronic diseases because of fewer side effects than drugs. Here we investigated the effects of photobiomodulation using light-emitting diode on amyloid plaques, gliosis, and neuronal loss to prevent and/or recover cognitive impairment, and optimal timing of photobiomodulation initiation for recovering cognitive function in a mouse model of Alzheimer's disease. 5XFAD mice were used as an Alzheimer's disease model. Animals receiving photobiomodulation treatment were divided into two groups: an early group starting photobiomodulation at 2 months of age (5XFAD+Early), and a late group starting photobiomodulation at 6 months of age (5XFAD+Delay). Both groups received photobiomodulation 20 minutes per session three times per week for 14 weeks. The Morris water maze, passive avoidance, and elevated plus maze tests were performed at 10 months of age. Immunohistochemistry and Western blot were performed after behavioral evaluation. The results showed that photobiomodulation treatment at early stages reduced amyloid accumulation, neuronal loss, and microgliosis and alleviated the cognitive dysfunction in 5XFAD mice, possibly by increasing insulin degrading enzyme related to amyloid-beta degradation. Photobiomodulation may be an excellent candidate for advanced preclinical Alzheimer's disease research.
机译:使用低水平发光二极管的光致调制可以安全和非侵略性地迅速应用于神经系统和生理疾病。 PhotobioModulation由于药物的副作用较少,对慢性疾病有效。在这里,我们研究了使用发光二极管对淀粉样蛋白,渗透性和神经元损失来预防和/或回收认知损伤的影响,以及用于在阿尔茨海默病的小鼠模型中回收认知功能的光生成函数的最佳时间。 5xFAD小鼠用作阿尔茨海默病模型。接受光生物调节治疗的动物分为两组:早期的早期基团在2个月(5xFAD +早期),和6个月(5xFAD +延迟)的后期开始光生物调节。两个组每次每月每次接受20分钟的光致调节,每周三次为14周。莫里斯水迷宫,被动避免和升高的加迷宫试验在10个月的年龄。在行为评估后进行免疫组织化学和蛋白质印迹。结果表明,早期阶段的光生物调节治疗降低了淀粉样蛋白积累,神经元损失和微细胞源,并减轻了5xFAD小鼠中的认知功能障碍,可能通过增加与淀粉样蛋白β降解有关的胰岛素降解酶。 PhotoBioModulation可以是晚期临床前阿尔茨海默病研究的优异候选者。

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