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5-HT_2AR部分激动剂与同时进行PET-MRI的神经化学表征

Frederick A Bagdasarian¹, Kristian Larsen^2,3, Hong Ping Deng¹

¹Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, USA.

Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism

|November 29, 2024

概括

血清素2A受体 (5-HT_2AR) 激动剂,如 псилоцибин和利苏里德,显示出不同的大脑血流反应. 不同的药物特征会影响精神疾病的治疗潜力.

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.
精神病学是一个精神病学.

背景情况:

血清素2A受体 (5-HT_2AR) 激动剂在精神病治疗中受到研究.
了解它们的各种药理学特征对于药物开发至关重要.

研究的目的:

为了研究psilocybin,lisuride和25CN-NBOH对5-HT_2A的神经调节作用,R.
通过同时使用PET和phMRI来比较它们的受体占用率和脑血量 (CBV) 变化.

主要方法:

在非人类灵长类动物 (N=3) 中,同时进行正子发射断层扫描 (PET) 和药理学磁共振成像 (phMRI).
评估5-HT_2AR占用与[¹¹C]MDL-100907 PET. 的情况.
用phMRI测量大脑血液体积 (CBV) 的变化.

主要成果:

混合激素psilocybin和lisuride诱导了双相CBV反应;选择性25CN-NBOH导致单相增加.
在测试剂量时,psilocybin和lisuride显示出类似的皮质5-HT_2AR占用率.
25CN-NBOH的占用率较低,但比西和利苏里德更大的CBV变化.

结论:

血液动力学反应根据激动剂亲和性概况而异,影响治疗应用.
这些发现为治疗精神疾病的血清激素激动剂的药理学影响提供了洞察力.

关键词:

5-HT2A受体是一种受体.通过PET-MRI进行PET-MRI.非人类灵长类动物.药理学药理学药理学药理学药理学迷幻药物迷幻药物是一种精神药物.

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