迪亚泽帕姆对睡眠的影响取决于光周期
Maria Panagiotou1,2, Johanna H Meijer3, Tom Deboer3
1Laboratory for Neurophysiology, Department of Cell and Chemical Biology, Leiden University, Medical Centre, Leiden, 2333, ZC, The Netherlands. panagiotou@euc.eur.nl.
Acta pharmacologica Sinica
|January 3, 2025
概括
光周期会影响小鼠的睡眠模式和大脑活动. 长时间的白天改变了睡眠结构和对GABA_A激动剂迪亚泽帕姆的反应,这表明药物的有效性取决于季节.
科学领域:
- 神经科学是一个神经科学.
- 时间生物学 时间生物学
- 睡眠研究 睡眠研究
背景情况:
- 光周期 (日长) 是季节性适应的关键环境提示.
- 以前的研究表明,光周期会影响睡眠和大脑神经传输,特别是胺黄油酸 (GABA) 介导的激发.
- 了解光周期对睡眠的影响对于理解昼夜节律和行为季节性变化至关重要.
研究的目的:
- 研究不同光周期 (长与短) 如何影响小鼠的睡眠模式和脑电图 (EEG).
- 确定光周期是否会影响GABA_A激动剂 - - 迪亚泽帕姆对睡眠结构和脑电图的影响.
- 探索光周期和GABAergic系统调制对睡眠和大脑活动的相互作用.
主要方法:
- 鼠标适应了长 (16:8光:黑暗) 或短 (8:16光:黑暗) 的光周期.
- 脑电图 (EEG) 和脑电图 (EMG) 的记录是在基线条件下,睡眠剥夺后,以及在服用亚泽帕姆 (3 mg/kg) 后进行的.
- 分析包括警觉状态,睡眠架构和不同频段的EEG功率密度.
主要成果:
- 光周期改变了睡眠和清醒的分布,在长光周期中的小鼠在黑暗中表现出更多的清醒和更少的REM睡眠.
- 在所有警觉状态中,较长的光周期与较低的整体EEG功率密度有关.
- 迪亚泽巴姆不论光周期,都抑制了NREM睡眠慢波活动 (SWA),但在短光周期中诱导了更多的REM睡眠,并在长光周期中在清醒期间增加了慢频EEG功率.
结论:
- 光周期显著调节小鼠的睡眠结构和EEG功率密度.
- 石对睡眠的影响取决于当前的光周期,这表明对GABA_A激动剂的季节性反应.
- 这些发现表明对人类睡眠和焦虑障碍治疗的潜在影响,突出了对光周期影响的进一步研究的需要.
相关概念视频
01:19Management of Insomnia
230
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...
230
01:19Sedatives and Hypnotics Drugs: Benzodiazepines
184
Benzodiazepines have both sedative and hypnotic properties. They include compounds such as diazepam (Valium) and alprazolam (Xanax). Structurally, their cores are similar, consisting of the fusion of a benzene ring and a diazepine ring, but they share a common mechanism of action in the central nervous system (CNS).
Benzodiazepines work by enhancing the effects of the inhibitory neurotransmitter GABA. They bind to the GABAA receptor, increasing its affinity for GABA, which opens chloride...
Benzodiazepines work by enhancing the effects of the inhibitory neurotransmitter GABA. They bind to the GABAA receptor, increasing its affinity for GABA, which opens chloride...
184
01:17Sedatives and Hypnotics Drugs: Miscellaneous Agents
145
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...
145
01:23Sedatives and Hypnotics: Overview
270
Sedatives are drugs that alleviate anxiety, while hypnotics induce sleep. Both classes of medication suppress neuronal activity, leading to a calming effect for sedatives and facilitating sleep for hypnotics.
Sedative-hypnotics are categorized into barbiturates, benzodiazepines (BZDs), and non-benzodiazepines or Z-drugs. These drugs work by suppressing central nervous system activity, and this suppression is dose-dependent. Older sedative medications, like barbiturates, follow a linear curve in...
Sedative-hypnotics are categorized into barbiturates, benzodiazepines (BZDs), and non-benzodiazepines or Z-drugs. These drugs work by suppressing central nervous system activity, and this suppression is dose-dependent. Older sedative medications, like barbiturates, follow a linear curve in...
270
01:14CNS Depressants: Barbiturates and Benzodiazepines
218
CNS depressants include drugs from the category of barbiturates and benzodiazepines. They are valuable medications for managing anxiety disorders and insomnia. Barbiturates, once used to induce and maintain sleep, have been replaced mainly by benzodiazepines due to barbiturate's toxicity, tolerance, and overdose risks. They interact with GABAA receptors, leading to sedation at low doses and potentially coma and death at higher doses. Phenobarbital, a long-acting barbiturate, possesses...
218
01:15Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response
41
Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
41