Cannabidiol treatment prevents drug reinstatement and the molecular alterations evoked by amphetamine on receptors and enzymes from dopaminergic and endocannabinoid systems in rats

Copyright © 2022. Published by Elsevier Inc..

In psychostimulant drug addiction, relapse is the most concerning outcome to be managed, considering there is no approved treatment for this neuropsychiatric condition. Here, we investigated the effects of the CBD treatment on the relapse behavior triggered by stress, after being submitted to the amphetamine (AMPH)-induced conditioned place preference (CPP) in rats. To elucidate the mechanisms of action underlying the CBD treatment, we evaluated the neuroadaptations on dopaminergic and endocannabinoid targets in the ventral striatum (VS) and ventral tegmental area (VTA) of the brain. Animals received d,l-AMPH (4 mg/kg, i.p.) or vehicle in the CPP paradigm for 8 days. Following the first CPP test, animals were treated with CBD (10 mg/kg, i.p.) or its vehicle for 5 days and subsequently submitted to forced swim stress protocol to induce AMPH-CPP relapse. Behavioral findings showed that CBD treatment prevented AMPH-reinstatement, also exerting anxiolytic activity. At the molecular level, in the VTA, CBD restored the CB1R levels decreased by AMPH-exposure, increased NAPE-PLD, and decreased FAAH levels. In the VS, the increase of D1R and D2R, as well as the decrease of DAT levels induced by AMPH were restored by CBD treatment. The current outcomes evidence a substantial preventive action of the CBD on the AMPH-reinstatement evoked by stress, also involving neuroadaptations in both dopaminergic and endocannabinoid systems in brain areas closely involved in the addiction. Although further studies are needed, these findings support the therapeutic potential of CBD in AMPH-relapse prevention.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:218

Enthalten in:

Pharmacology, biochemistry, and behavior - 218(2022) vom: 01. Juli, Seite 173427

Sprache:

Englisch

Beteiligte Personen:

Metz, Vinícia Garzella [VerfasserIn]
da Rosa, Jéssica Leandra Oliveira [VerfasserIn]
Rossato, Domenika Rubert [VerfasserIn]
Burger, Marilise Escobar [VerfasserIn]
Pase, Camila Simonetti [VerfasserIn]

Links:

Volltext

Themen:

19GBJ60SN5
Addiction
Amphetamine
CK833KGX7E
Cannabidiol
Conditioned place preference
Dopamine
Endocannabinoids
Journal Article
Psychostimulants
Research Support, Non-U.S. Gov't
VTD58H1Z2X
Ventral striatum
Ventral tegmental area

Anmerkungen:

Date Completed 09.08.2022

Date Revised 23.08.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.pbb.2022.173427

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM343314029