Abstract:
:The purpose of this study was to explore the effects of cannabidiol (CBD) on binge drinking and evaluate potential gender-related differences. To this aim, male and female C57BL/6J mice (n = 60 per sex) were exposed to the drinking in the dark (DID) model for 4 weeks (DID-1 to DID-4). Dose-response effects of CBD on the ethanol intake were tested by acute (day-4 of DID-3) or repeated administration (day-1 to 4 of DID-4) (experiment 1: CBD 15, 30, and 60 mg/kg, i.p.; experiment 2: CBD 90 mg/kg, i.p.). Finally, we analyzed the relative gene expression of tyrosine hydroxylase (TH) and μ-opioid receptor (OPRM1) and cannabinoid CB1 receptor (CB1 r) in the ventral tegmental area (VTA) and in the nucleus accumbens (NAc), respectively, by real-time quantitative PCR. Females exhibited higher ethanol intake during each DID session. Interestingly, females also showed higher expression of TH and OPRM1, without any difference in CB1 r. Only the acute administration of CBD at the highest dose (90 mg/kg) reduced significantly ethanol consumption in both sexes. Chronic CBD administration (30, 60 and 90 mg/kg) reduced ethanol intake in males, whereas in females a significant reduction was only achieved with the highest dose (90 mg/kg). Repeated administration with CBD (60 mg/kg) significantly reduced TH and OPRM1 in males. In addition, CBD (30 and 60 mg/kg) significantly reduced CB1 r in males. No effect was observed in females. Taken together, these findings suggest that CBD may be of interest for treating binge-drinking patterns and that gender-related difference may affect the treatment outcome.
journal_name
Addict Bioljournal_title
Addiction biologyauthors
Viudez-Martínez A,García-Gutiérrez MS,Manzanares Jdoi
10.1111/adb.12765subject
Has Abstractpub_date
2020-05-01 00:00:00pages
e12765issue
3eissn
1355-6215issn
1369-1600journal_volume
25pub_type
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