Chronic paroxetine increases [3H]nociceptin binding in rat dorsal raphe nucleus.

Abstract:

:Opioid-receptor-like I (ORLI) receptors, ORLI mRNA and nociceptin are particularly abundant in the limbic system and in central monoaminergic areas, brain regions involved in mood regulation and response to antidepressants. To analyse whether ORLI receptors adaptations occur during the first 3 weeks of an antidepressant treatment, we administered paroxetine to rats (10 mg/kg, i.p., once a day) for 4, 7,14 or 21 days. A significant increase (22-50%) in [3H]nociceptin binding sites density appeared specifically in the dorsal raphe nucleus after 4, 7 or 21 days of treatment, whereas no change was observed at any time in any other brain regions studied. These data constitute the first evidence of a modulation of ORLI receptors by an antidepressant treatment.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Vilpoux C,Naudon L,Costentin J,Leroux-Nicollet I

doi

10.1097/00001756-200201210-00026

subject

Has Abstract

pub_date

2002-01-21 00:00:00

pages

111-4

issue

1

eissn

0959-4965

issn

1473-558X

journal_volume

13

pub_type

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