Abstract：
AIMS:Nicotine is known to promote body weight loss and to disturb glucose homeostasis and lipoprotein metabolism. Electronic cigarettes, as a substitute to nicotine, are becoming increasingly popular, although there is no evidence regarding their safety. Considering the dearth of information about e-cigarette toxicity, the present study was designed to compare nicotine alone to e-liquid with or without nicotine on metabolic parameters in Wistar rats. MAIN METHODS:For this purpose, e-liquid with or without nicotine and nicotine alone (0.5mg/kg of body weight) were administered intra-peritoneally during 28 days. KEY FINDINGS:Our results show a significant decrease in food and energy intake after nicotine or e-liquid with nicotine exposure, when compared to control or e-liquid without nicotine. Analysis of lipid status identified a significant decrease in cholesterol and LDL levels in e-cigarette groups, suggesting an improvement in lipid profile. Interestingly, e-liquid without nicotine induced hyperglycemia which is negatively correlated to hepatic glycogen level, acting like nicotine alone. Furthermore, an increase in liver biomarkers was observed in all treated groups. qRT-PCR analysis showed GSK3β up-regulation in e-liquid with nicotine as well as, surprisingly, in e-liquid without nicotine exposure. In contrast, PEPCK genes were only up-regulated in e-liquid with nicotine. SIGNIFICANCE:While some features observed in rats may not be observed in human smokers, most of our data are consistent with, e-liquid per se i.e. without nicotine, not being neutral from a metabolic stand point since disrupting glucose homeostasis in rats.
journal_name
Life Scijournal_title
Life sciencesauthors
El Golli N,Dkhili H,Dallagi Y,Rahali D,Lasram M,Bini-Dhouib I,Lebret M,Rosa JP,El Fazaa S,Allal-El Asmi Mdoi
10.1016/j.lfs.2015.12.049subject
Has Abstractpub_date
2016-02-01 00:00:00pages
131-8eissn
0024-3205issn
1879-0631pii
S0024-3205(15)30142-9journal_volume
146pub_type
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