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Lack of effect of antidepressant drugs on the levels of mRNAs encoding serotonergic receptors, synthetic enzymes and 5HT transporter

Spurlock, G., Buckland, Paul Robert, O'Donovan, Michael Conlon and McGuffin, P. 1994. Lack of effect of antidepressant drugs on the levels of mRNAs encoding serotonergic receptors, synthetic enzymes and 5HT transporter. Neuropharmacology 33 (3-4) , pp. 433-440. 10.1016/0028-3908(94)90073-6

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Abstract

Serotonergic transmission is thought to be central to the aetiology of depression and the therapeutic actions of antidepressant drugs, and the latters' delayed effect has given rise to the hypothesis that an adaptive change may be involved, possibly at the level of gene expression. We have examined this hypothesis by treating rats over a time course of up to 32 days with either imipramine, mianserin, fluvoxamine, citalopram, amoxapine or saline and measuring the levels of mRNAs encoding the 5HT1A, 5HT1B, 5HT1C and 5HT2 receptors, the enzymes tryptophan hydroxylase and aromatic amino acid decarboxylase, and the 5HT transporter. None of the treatments gave rise to significant changes in any of the mRNA levels at any time point. These results suggest that the reported changes in 5HT receptor numbers do not occur as a result of changes in the abundance of their encoding mRNAs, and that changes to the latter is not central to the therapeutic effects of antidepressant drugs.

Item Type: Article
Status: Published
Schools: MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Medicine
Subjects: R Medicine > R Medicine (General)
Publisher: Elsevier
ISSN: 0028-3908
Last Modified: 04 Jun 2017 06:13
URI: http://orca.cf.ac.uk/id/eprint/57453

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