Nicotine delivery to users from cigarettes and from different types of e-cigarettes

Nicotine delivery to users from cigarettes and from different types of e-cigarettes
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DOI:
10.1007/s00213-016-4512-6
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发表时间:
2017-03-01
期刊:
影响因子:
3.4
通讯作者:
McRobbie, Hayden
McRobbie, Hayden
中科院分区:
医学3区
文献类型:
--
作者:
Hajek, Peter;Przulj, Dunja;McRobbie, Hayden

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以吸烟者寻求的方式提供尼古丁可能是电子烟(EC)成功替代香烟的关键因素。我们研究了不同类型的电子烟在多大程度上模仿了香烟中的尼古丁摄入量。十二名参与者(电子烟和香烟的“双重使用者”)使用了自己的品牌香烟和九个不同的电子烟品牌。在基线时采集血样,并在 10 分钟内每隔 2 分钟采集一次血样,并在 30 分钟后再次采集血样。11 名吸烟者提供了可用数据。在尼古丁释放方面,没有任何 EC 与香烟相匹配(C(最大)= 17.9 ng/ml,T(最大)= 4 分钟,AUC(0-> 30)= 315 ng/ml/min)。含有 48 mg/ml 尼古丁的 EC 产生了最接近的 PK 曲线(C(最大值)= 13.6 ng/ml,T(最大值)= 4 分钟,AUC(0-> 30)= 245 ng/ml/分钟),其次是使用 20 mg/ml 尼古丁的第三代 EC(C(最大值)= 11.9 ng/ml,T(最大值)= 6 分钟,AUC(0-> 30) = 232 ng/ml/min),然后是使用 20 mg/ml 尼古丁的罐系统(C(最大)= 9.9 ng/ml,T(最大)= 6 分钟,AUC(0-> 30)= 201 ng/ml/min)。 Cig-a-like PK 值相似,范围为 C(最大)7.5 至 9.7 ng/ml,T(最大)4-6 分钟,AUC(0-> 30)144 至 173 ng/ml/min。电子烟液尼古丁浓度的适度差异对尼古丁输送量影响不大,例如具有 24 mg/ml 药筒的 EC 与具有 16 mg/ml 药筒的 EC 具有相同的 PK 特性。使用相似浓度的电子烟油,罐装 EC 比类似 cig-a 的 EC 提供更多的尼古丁。我们测试的 EC 品牌的尼古丁输送效率不如香烟,但较新的 EC 产品比 cig-a-like 品牌更有效地输送尼古丁。电子烟油尼古丁含量的适度变化对尼古丁输送量影响很小。如果吸烟者对类似香烟的 EC 效果不满意,应建议他们尝试更先进的系统。
Delivering nicotine in the way smokers seek is likely to be the key factor in e-cigarette (EC) success in replacing cigarettes. We examined to what degree different types of EC mimic nicotine intake from cigarettes.Twelve participants ('dual users' of EC and cigarettes) used their own brand cigarette and nine different EC brands. Blood samples were taken at baseline and at 2-min intervals for 10 min and again at 30 min.Eleven smokers provided usable data. None of the EC matched cigarettes in nicotine delivery (C (max) = 17.9 ng/ml, T (max) = 4 min and AUC(0-> 30) = 315 ng/ml/min). The EC with 48 mg/ml nicotine generated the closest PK profile (C (max) = 13.6 ng/ml, T (max) = 4 min, AUC(0-> 30) = 245 ng/ml/min), followed by a third generation EC using 20 mg/ml nicotine (C (max) = 11.9 ng/ml, T (max) = 6 min, AUC(0-> 30) = 232 ng/ml/min), followed by the tank system using 20 mg/ml nicotine (C (max) = 9.9 ng/ml, T (max) = 6 min, AUC(0-> 30) = 201 ng/ml/min). Cig-a-like PK values were similar, ranging from C (max) 7.5 to 9.7 ng/ml, T (max) 4-6 min, and AUC(0-> 30) 144 to 173 ng/ml/min. Moderate differences in e-liquid nicotine concentrations had little effect on nicotine delivery, e.g. the EC with 24 mg/ml cartridge had the same PK profile as ECs with 16 mg/ml cartridges. Using similar strength e-liquid, the tank EC provided significantly more nicotine than cig-a-like ECs.EC brands we tested do not deliver nicotine as efficiently as cigarettes, but newer EC products deliver nicotine more efficiently than cig-a-like brands. Moderate variations in nicotine content of e-liquid have little effect on nicotine delivery. Smokers who are finding cig-a-like EC unsatisfactory should be advised to try more advanced systems.