Neurochemical binding profiles of novel indole and benzofuran MDMA analogues.
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Accepted version
Author(s)
Shimshoni, JA
Winkler, I
Golan, E
Nutt, D
Type
Journal Article
Abstract
3,4-Methylenedioxy-N-methylamphetamine (MDMA) has been shown to be effective in the treatment of post-traumatic stress disorder (PTSD) in numerous clinical trials. In the present study, we have characterized the neurochemical binding profiles of three MDMA-benzofuran analogues (1-(benzofuran-5-yl)-propan-2-amine, 5-APB; 1-(benzofuran-6-yl)-N-methylpropan-2-amine, 6-MAPB; 1-(benzofuran-5-yl)-N-methylpropan-2-amine, 5-MAPB) and one MDMA-indole analogue (1-(1H-indol-5-yl)-2-methylamino-propan-1-ol, 5-IT). These compounds were screened as potential second-generation anti-PTSD drugs, against a battery of human and non-human receptors, transporters, and enzymes, and their potencies as 5-HT2 receptor agonist and monoamine uptake inhibitors determined. All MDMA analogues displayed high binding affinities for 5-HT2a,b,c and NEα2 receptors, as well as significant 5-HT, DA, and NE uptake inhibition. 5-APB revealed significant agonist activity at the 5-HT2a,b,c receptors, while 6-MAPB, 5-MAPB, and 5-IT exhibited significant agonist activity at the 5-HT2c receptor. There was a lack of correlation between the results of functional uptake and the monoamine transporter binding assay. MDMA analogues emerged as potent and selective monoamine oxidase A inhibitors. Based on 6-MAPB favorable pharmacological profile, it was further subjected to IC50 determination for monoamine transporters. Overall, all MDMA analogues displayed higher monoamine receptor/transporter binding affinities and agonist activity at the 5-HT2a,c receptors as compared to MDMA.
Date Issued
2016-09-20
Date Acceptance
2016-09-02
Citation
Naunyn-Schmiedeberg's Archives of Pharmacology, 2016, 390 (1), pp.15-24
ISSN
0028-1298
Publisher
Springer
Start Page
15
End Page
24
Journal / Book Title
Naunyn-Schmiedeberg's Archives of Pharmacology
Volume
390
Issue
1
Copyright Statement
© 2016 Springer-Verlag Berlin Heidelberg. The final publication is available at Springer via http://dx.doi.org/10.1007/s00210-016-1297-4
Identifier
http://www.ncbi.nlm.nih.gov/pubmed/27650729
PII: 10.1007/s00210-016-1297-4
Subjects
3,4-Methylenedioxy-N-methylamphetamine (MDMA)
MDMA analogues
Monoamine receptors
Monoamine transporters
Neurochemical profile
Pharmacology & Pharmacy
1115 Pharmacology And Pharmaceutical Sciences
Publication Status
Published
Coverage Spatial
Germany