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Δ9-THC引起的突触和记忆障碍是通过COX-2信号传递的媒介
Rongqing Chen1, Jian Zhang1, Ni Fan1
1Neuroscience Center of Excellence, School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA.
Cell
|November 26, 2013
概括
经常使用大麻.
科学领域:
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 大麻含有Δ(9) - 四化甘醇 (Δ(9) -THC,具有历史医学用途.
- Δ(9) -THC的不良副作用限制了它的治疗潜力.
- 突触和认知障碍是关键的不良影响.
研究的目的:
- 为了研究底层的分子机制 Δ(9) -THC诱导的认知和突触障碍.
- 探索循环氧化酶-2 (COX-2) 在调解这些效应中的作用.
- 评估抑制COX-2的潜力,以减轻副作用,同时保持治疗效益.
主要方法:
- 研究了D9THC暴露与大脑中COX-2诱导之间的关联.
- 利用了COX-2的药理和遗传抑制.
- 研究了对谷氨酸受体子单元,树突脊柱密度,突触可塑性和海马神经元内记忆力的影响.
- 在阿尔茨海默病动物模型中评估了效应.
主要成果:
- 通过CB1受体通路,重复的Δ(9) -THC暴露会在大脑中诱导COX-2.
- 抑制COX-2可以防止D9) -THC诱导的突触和认知缺陷,包括长期强化和记忆的损害.
- 在阿尔茨海默氏症模型中,抑制COX-2并没有取消氨酸斑块和神经退行症的减少中 Δ(9) -THC 的有益作用.
结论:
- 循环氧化酶-2 (COX-2) 诱导调解了Δ(9) -THC的负面突触和认知效应.
- 同时抑制COX-2可以通过减轻副作用来扩大大麻的医疗应用.
- 这一策略可能允许在阿尔茨海默氏症等疾病中治疗性使用大麻素,而不会导致认知障碍.
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