加拿大大麻素受体激活剂在清醒的小鼠中诱导急性呼吸抑制
Joshua Watkins1, Petra Aradi2, Rachel Hahn2
1Department of Psychological and Brain Sciences, Indiana University Bloomington, Bloomington, IN 47405, United States; Program in Neuroscience, Indiana University Bloomington, Bloomington, IN 47405, United States.
Pharmacological research
|March 10, 2025
概括
合成大麻素和D9THC通过激活中央大麻素1型 (CB1) 受体来抑制呼吸. 这些受体位于对呼吸控制至关重要的脑部区域,解释了呼吸衰竭的风险.
科学领域:
- 神经科学是一个神经科学.
- 呼吸系统生理学 呼吸系统生理学
- 药理学 药理学是指药理学的学科.
背景情况:
- 娱乐性合成大麻素激动剂 (娱乐性合成大麻素激动剂)
- 香料化合物是一种香料化合物.
- ) 可能导致急性呼吸衰竭.
- 四大麻 (Δ9THC) 传统上与大脑呼吸控制无关,原因是大脑中稀少的CB1受体标记.
研究的目的:
- 在小鼠中研究合成CB1激动剂和Δ9-THC的呼吸系统作用.
- 为了调和合成大麻素已知的风险与关于呼吸控制的THC感知安全性之间的差异.
主要方法:
- 在小鼠中进行全身囊造影,以评估呼吸系统参数.
- RNAscope in situ杂交以在脑干中定位CB1受体mRNA.
- 合成CB1抗原体CP55,940和Δ9THC的使用,有或没有CB1抗原体 (AM251,AM6545).
主要成果:
- 无论是CP55,940还是D9THC,都依赖于剂量,抑制了通风和潮体积,降低了呼吸力.
- 大麻素降低了呼吸速率,增加了吸入/呼气暂停.
- 呼吸抑制是由中央CB1抗剂阻断的,而不是外围的抗剂,并且发生在比行为效应低的剂量.
- CB1受体 (Cnr1) mRNA与片受体 (Oprm1) mRNA在骨髓前博廷格综合体中广泛共同表达.
结论:
- 大麻素1型 (CB1) 受体存在于大脑中关键的呼吸控制中心.
- 由合成和天然大麻素激活中央CB1受体,导致呼吸抑制.
- 这一发现突出了大麻素诱导的呼吸衰竭的潜在机制.
相关概念视频
Methods of Documentation V: CBE
869
Charting by Exception, or CBE, is a method of documentation used in healthcare, particularly in nursing, that focuses on documenting only significant or abnormal findings rather than recording every detail. This approach aims to streamline the documentation process, improve efficiency, and ensure that healthcare providers can quickly identify deviations from normalcy in patient assessments.
In CBE, healthcare professionals establish predefined standards of practice that define what constitutes...
In CBE, healthcare professionals establish predefined standards of practice that define what constitutes...
869
Vebe Test
99
The Vebe test is a method used to measure the workability of concrete, particularly effective for dry concrete mixes. This test employs a specific apparatus that includes a cylindrical chamber, a standard slump cone, and a transparent disc-shaped rider, all mounted on a vibrating table. The cylindrical chamber has dimensions of nine and a half inches in diameter and eight inches in height.
To conduct the test, concrete is placed into the slump cone. The concrete is filled in layers and...
To conduct the test, concrete is placed into the slump cone. The concrete is filled in layers and...
99


