Nicotine formulations impact reinforcement-related behaviors in a mouse model of vapor self-administration.
Nicotine formulations impact reinforcement-related behaviors in a mouse model of vapor self-administration.
复制标题
尼古丁制剂会影响蒸汽自我给药的小鼠模型中与增强相关的行为。
DOI:
10.1016/j.drugalcdep.2021.108732
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发表时间:
2021-07-01
影响因子:
4.2
通讯作者:
Cooper SY
中科院分区:
文献类型:
--
作者:
Henderson BJ;Cooper SY
Electronic nicotine delivery systems (ENDS) differ from combustible cigarettes given that nicotine-salt or nicotine-freebase may be used depending on the product. We have investigated how nicotine-salt and freebase formulations alter e-Vape® self-administration (EVSA) behavior and plasma cotinine levels in male and female mice. Adult C57/BL6J mice were used in EVSA and assigned vaping e-liquids (50:50 PGVG, 6 mg/mL nicotine-freebase, or 6 mg/mL nicotine-salt). Mice were escalated on a fixed ratio 1 (FR1) schedule in daily 2 hr sessions and then transitioned to a FR3 to examine reinforcement-related behaviors. Here we observed that mice assigned nicotine-salt exhibited increased EVSA on a FR3 schedule compared to nicotine-freebase. Additionally, mice assigned nicotine-salt exhibited higher plasma cotinine concentrations following delivery-controlled passive-inhalation sessions. These data provide evidence nicotine-salt formulations may contribute to greater reinforcement-related behavior and highlight the need for further investigations regarding nicotine formulation in ENDS.
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影响因子:
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