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5-MeO-DIPT 在小鼠纹状体和前额皮质中对 5-羟色胺转运体和 5-羟色胺 5-HT 受体的双重作用。

Dual actions of 5-MeO-DIPT at the serotonin transporter and serotonin 5-HT receptor in the mouse striatum and prefrontal cortex.

机构信息

Addictive Substance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.

Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, The University of Toledo, Toledo, OH, USA.

出版信息

Neuropsychopharmacol Rep. 2021 Mar;41(1):91-101. doi: 10.1002/npr2.12161. Epub 2021 Feb 6.

DOI:10.1002/npr2.12161
PMID:33547882
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8182963/
Abstract

AIMS

5-Methoxy-N,N-diisopropyltryptamine (5-MeO-DIPT) is a synthetic orally active hallucinogenic tryptamine analogue. The present study examined whether the effects of 5-MeO-DIPT involve the serotonin transporter (SERT) and serotonin 5-hydroxytryptamine-1A (5-HT ) receptor in the striatum and prefrontal cortex (PFC).

METHODS

We investigated the effects of 5-MeO-DIPT on extracellular 5-HT (5-HT ) and dopamine (DA ) levels in the striatum and PFC in wildtype and SERT knockout (KO) mice using in vivo microdialysis, and for comparison the effects of the 5-HT receptor antagonist WAY100635 and the 5-HT receptor agonist 8-OH-DPAT on 5-HT .

RESULTS

5-MeO-DIPT decreased 5-HT levels in the striatum, but not PFC. In SERT-KO mice, 5-MeO-DIPT did not affect 5-HT levels in the striatum or PFC. In the presence of WAY100635, 5-MeO-DIPT substantially increased 5-HT levels, suggesting that 5-MeO-DIPT acts on SERT and these effects are masked by its 5-HT actions in the absence of WAY100635. 8-OH-DPAT decreased 5-HT levels in the striatum and PFC in wildtype mice. WAY100635 antagonized the 8-OH-DPAT-induced decrease in 5-HT levels. In SERT-KO mice, 8-OH-DPAT did not decrease 5-HT levels in the striatum and PFC. 5-MeO-DIPT dose-dependently increased DA levels in the PFC, but not striatum, in wildtype and SERT-KO mice. The increase in DA levels that was induced by 5-MeO-DIPT was not antagonized by WAY100635.

CONCLUSION

5-MeO-DIPT influences both 5-HT and DA levels in the striatum and PFC. 5-MeO-DIPT dually acts on SERT and 5-HT receptors so that elevations in 5-HT levels produced by reuptake inhibition are limited by actions of the drug on 5-HT receptors.

摘要

目的

5-甲氧基-N,N-二异丙基色胺(5-MeO-DIPT)是一种具有口服活性的致幻色胺类似物。本研究旨在探讨 5-MeO-DIPT 的作用是否涉及纹状体和前额叶皮层(PFC)中的 5-羟色胺转运体(SERT)和 5-羟色胺 5-羟色胺-1A(5-HT1A)受体。

方法

我们使用活体微透析法研究了 5-MeO-DIPT 对野生型和 SERT 敲除(KO)小鼠纹状体和 PFC 中细胞外 5-HT(5-HT)和多巴胺(DA)水平的影响,并比较了 5-HT 受体拮抗剂 WAY100635 和 5-HT 受体激动剂 8-OH-DPAT 对 5-HT 的影响。

结果

5-MeO-DIPT 降低了纹状体中的 5-HT 水平,但对 PFC 没有影响。在 SERT-KO 小鼠中,5-MeO-DIPT 不影响纹状体或 PFC 中的 5-HT 水平。在 WAY100635 存在的情况下,5-MeO-DIPT 显著增加了 5-HT 水平,表明 5-MeO-DIPT 作用于 SERT,并且在没有 WAY100635 的情况下,其 5-HT 作用掩盖了这些作用。8-OH-DPAT 降低了野生型小鼠纹状体和 PFC 中的 5-HT 水平。WAY100635 拮抗 8-OH-DPAT 诱导的 5-HT 水平降低。在 SERT-KO 小鼠中,8-OH-DPAT 未降低纹状体和 PFC 中的 5-HT 水平。5-MeO-DIPT 剂量依赖性地增加了野生型和 SERT-KO 小鼠 PFC 中的 DA 水平,但不增加纹状体中的 DA 水平。5-MeO-DIPT 诱导的 DA 水平升高不受 WAY100635 的拮抗作用。

结论

5-MeO-DIPT 影响纹状体和 PFC 中的 5-HT 和 DA 水平。5-MeO-DIPT 双重作用于 SERT 和 5-HT 受体,因此,再摄取抑制引起的 5-HT 水平升高受到药物对 5-HT 受体作用的限制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/e7be3fd0c7b0/NPR2-41-91-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/42b770bb03a4/NPR2-41-91-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/40c159b08d8c/NPR2-41-91-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/ab0e1d88aacb/NPR2-41-91-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/bc2dc7637ab9/NPR2-41-91-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/e7be3fd0c7b0/NPR2-41-91-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/42b770bb03a4/NPR2-41-91-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/40c159b08d8c/NPR2-41-91-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/ab0e1d88aacb/NPR2-41-91-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/bc2dc7637ab9/NPR2-41-91-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc4a/8182963/e7be3fd0c7b0/NPR2-41-91-g002.jpg

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