Comment on “Impaired Respiratory and Body Temperature Control Upon Acute Serotonergic Neuron Inhibition”

Author:

Löffler Stefan1,Körber Jochen2,Nubbemeyer Udo2,Fehsel Karin3

Affiliation:

1. Department of Psychiatry and Psychotherapy, Clinic Offenbach, Teaching Hospital of Goethe University, D-63069 Offenbach, Germany.

2. Department of Organic Chemistry, Gutenberg University, D-55128 Mainz, Germany.

3. Neurobiochemical Research Unit, Clinic and Polyclinic for Psychiatry and Psychotherapy, Heine University, D-40629 Düsseldorf, Germany.

Abstract

Ray et al . (Reports, 29 July 2011, p. 637) assume that clozapine- N 4-oxide (CNO) represents a “biologically inert synthetic ligand” that selectively activates the M4 muscarinic receptor-based DREADD (designer receptor exclusively activated by a designer drug). In contrast, due to the redox cycling of CNO with clozapine and to their cell membrane permeability, CNO is biologically active and its conversion products are capable of undermining DREADD effects.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference33 articles.

1. Impaired Respiratory and Body Temperature Control Upon Acute Serotonergic Neuron Inhibition

2. Rapid formation of clozapine in guinea-pigs and man following clozapine-N-oxide administration;Jann M. W.;Arch. Int. Pharmacodyn. Ther.,1994

3. Metabolism and bioactivation of clozapine by human liver in vitro;Pirmohamed M.;J. Pharmacol. Exp. Ther.,1995

4. Non-enzymatic reduction of aliphatic tertiary amineN-oxides mediated by the haem moiety of cytochrome P450

5. New Insights into the Function of M4 Muscarinic Acetylcholine Receptors Gained Using a Novel Allosteric Modulator and a DREADD (Designer Receptor Exclusively Activated by a Designer Drug)

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