曼吉费林对甲诱导的HT22细胞损伤和认知障碍的保护作用
Fan Chen1, Na Wang1, Xinyan Tian1
1School of Basic Medical Sciences, Dali University, Dali 671003, China.
Pharmaceutics
|June 28, 2023
概括
甲暴露会导致类似阿尔茨海默氏症的症状. 曼吉费林 (MGF) 通过减少高酸化和内分泌网膜应激来防止甲诱导的神经毒性和认知衰退.
科学领域:
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
- 药理学 药理学是指药理学的学科.
背景情况:
- 甲 (FA) 暴露与阿尔茨海默病 (AD) 类病理有关,包括认知障碍和陶过酸化.
- 了解FA引起的神经毒性的机制对于开发AD预防和治疗策略至关重要.
- 曼吉费林 (MGF),一种天然的桑,表现出与AD治疗有关的潜在神经保护性质.
研究的目的:
- 调查曼吉费林 (MGF) 对甲 (FA) 诱导的神经毒性的保护作用.
- 阐明MGF在FA暴露细胞和小鼠中的神经保护作用的基本机制.
- 在小鼠模型中评估MGF在改善FA引起的认知障碍方面的疗效.
主要方法:
- 鼠海马细胞 (HT22) 与MGF和FA联合治疗,以评估细胞毒性和高酸化.
- 分析了内质网膜压力 (ERS) 标记物 (GRP78,CHOP) 和下游激酶 (GSK-3β,CaMKII).
- 评估了氧化损伤标志物 (Ca2+过载,ROS,线粒体功能障碍).
- C57/BL6小鼠接受了6周的胃内MGF,以评估认知功能和大脑病理.
主要成果:
- 在HT22细胞中,MGF显著降低了FA诱导的细胞毒性和高酸化.
- 通过抑制GRP78和CHOP的表达,MGF减弱了FA诱导的细胞内膜网膜应激 (ERS).
- MGF改善了FA引起的氧化损伤,包括Ca2+过载,ROS生成和线粒体功能障碍.
- 在FA引起的认知障碍的小鼠中,MGF的使用改善了空间学习和记忆.
- 在小鼠中,MGF降低了脑高酸化和GRP78,GSK-3β和CaMKII的表达.
结论:
- 曼吉费林 (MGF) 显示出对甲 (FA) 诱导的神经毒性和认知缺陷的显著神经保护作用.
- MGF的保护机制包括减轻内分泌网膜应激,氧化损伤和陶过酸化.
- 这些发现表明,MGF是阿尔茨海默病和与甲暴露有关的疾病的潜在治疗剂.
相关概念视频
Unrenewable Cells
In humans, the photoreceptor cells of the eye and sensory hair cells of the ear lack stem cells. These cells are thus unrenewable and cannot be replaced when they are damaged or destroyed.
Photoreceptors
The retina is composed of several layers and contains specialized cells called photoreceptors. The photoreceptors (rods and cones) change their membrane potential when stimulated by light energy. There are two types of photoreceptors—rods and cones—which differ in the shape of their outer...
Photoreceptors
The retina is composed of several layers and contains specialized cells called photoreceptors. The photoreceptors (rods and cones) change their membrane potential when stimulated by light energy. There are two types of photoreceptors—rods and cones—which differ in the shape of their outer...
Photoreceptors and Visual Pathways
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...


