维生素B6通过CBS/GSH/GPX4通路缓解慢性睡眠剥夺引起的海马体铁亡
Man Yuan1, Feng Wang1, Tieqiang Sun1
1Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China.
概括
睡眠不足会通过铁亡导致脑细胞死亡,影响记忆力. 维生素B6通过恢复关键细胞通路并保护其免受这种损伤,显示出有前途的治疗方法.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 生物化学 生化学
背景情况:
- 睡眠不足 (SD) 与神经元铁亡和海马体功能障碍有关.
- 目前对SD诱导的铁亡的干预措施有限.
- 转硫途径,涉及维生素B6,对于细胞在囊缺乏下生存至关重要.
研究的目的:
- 为了研究睡眠剥夺诱导的海马体铁亡的机制.
- 评估维生素B6作为对这种铁亡的干预措施的潜力.
主要方法:
- 研究睡眠不足对小鼠海马功能和铁亡标记物的影响.
- 评估了xCT,谷氨 (GSH) 和GPX4.4的蛋白质表达.
- 使用Nissl染色用于评估神经元损失和用HT-22细胞进行体外研究.
主要成果:
- 睡眠剥夺抑制了xCT表达,导致囊缺乏,减少了GSH合成,随后在海马中发生神经元亡.
- 维生素B6上调了囊氨酸β-合成酶 (CBS) 表达,补充了GSH和恢复了GPX4,从而缓解了铁亡.
- 维生素B6在细胞模型中表现出抗ferroptotic作用,这取决于CBS表达.
结论:
- 慢性睡眠不足会通过破坏囊/GSH/GPX4通路来诱导海马体铁.
- 维生素B6通过增强转硫化通路内的CBS表达,有效地减轻睡眠剥夺引起的铁亡.
- 维生素B6代表了一种潜在的治疗策略,可以缓解与睡眠剥夺相关的大脑损伤.
相关概念视频
Insufficient Sleep and Sleep Deprivation
141
Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
Sleep deprivation is a more severe form of sleep loss...
141
Management of Insomnia
244
The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
244
Understanding Sleep
228
Sleep, an essential biological state, involves significant reductions in physical activity, sensory awareness, and interaction with the environment. This complex physiological process is primarily regulated by specific brain regions, notably the hypothalamus and pons, which govern the sleep-wake cycle or circadian rhythm.
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
228
Sedatives and Hypnotics Drugs: Miscellaneous Agents
171
Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
171


