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Gen Physiol Biophys. 2018 Sep;37(6):711-713. doi: 10.4149/gpb_2018040. Epub 2018 Nov 15.

Inhibition of cytochrome P450 by proadifen diminishes the excitability of brain serotonin neurons in rats.

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Institute of Molecular Physiology and Genetics, Centre of Biosciences, Slovak Academy of Sciences, Bratislava, Slovakia.


The aim of this study was to investigate the effect an inhibitor of cytochrome-P450, proadifen hydrochloride (SKF525), on the excitability of serotonin neurons. Adult male Wistar rats were administered SKF525 forty-eight, twenty-four, and one hour before electrophysiological assessments. Control animals were injected saline. Rats were anesthetized with chloral hydrate and glass electrodes were stereotaxically inserted into the dorsal raphe nucleus (DRN). Serotonin neurons were identified and their firing activity was recorded. It was found that the SKF525 inhibits the excitability of 5-HT neurons. We suggest that corticosterone might play a key role in the SKF525-induced inhibition of 5-HT neurons.

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