期刊
CANNABIS AND CANNABINOID RESEARCH
卷 -, 期 -, 页码 -出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/can.2021.0185
关键词
2-arachidonoylglycerol; anandamide; endocannabinoid; cannabis use disorder; plasma concentration; subjective effects
This study investigated the impact of acute smoked cannabis administration on circulating endocannabinoids (eCBs) and the relationship between cannabis effects and eCBs. The results showed that cannabis administration increased intoxication ratings, heart rate, and plasma THC levels. The study also found a significant positive correlation between baseline AEA levels and peak ratings of high and good drug effect, and a negative correlation between baseline 2-AG levels and frequency of cannabis use.
Background: The endogenous cannabinoid system (ECS), including the endocannabinoids (eCBs), anandamide (AEA), and 2-arachidonoylglycerol (2-AG), plays an integral role in psychophysiological functions. Although frequent cannabis use is associated with adaptations in the ECS, the impact of acute smoked cannabis administration on circulating eCBs, and the relationship between cannabis effects and circulating eCBs are poorly understood.Methods: This study measured the plasma levels of AEA, 2-AG, and Delta-9-tetrahydrocannabinol (THC), subjective drug-effects ratings, and cardiovascular measures at baseline and 15-180 min after cannabis users (n=26) smoked 70% of a cannabis cigarette (5.6% THC).Results: Cannabis administration increased the ratings of intoxication, heart rate, and plasma THC levels relative to baseline. Although cannabis administration did not affect eCB levels relative to baseline, there was a significant positive correlation between baseline AEA levels and peak ratings of High and Good Drug Effect. Further, baseline 2-AG levels negatively correlated with frequency of cannabis use (mean days/week) and with baseline THC metabolite levels.Conclusions: In a subset of heavy cannabis smokers: (1) more frequent cannabis use was associated with lower baseline 2-AG, and (2) those with lower AEA got less intoxicated after smoking cannabis. These findings contribute to a sparse literature on the interaction between endo- and phyto-cannabinoids. Future studies in participants with varied cannabis use patterns are needed to clarify the association between circulating eCBs and the abuse-related effects of cannabis, and to test whether baseline eCBs predict the intoxicating effects of cannabis and are a potential biomarker of cannabis tolerance.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据