Genotoxic and carcinogenic potential associated with electronic cigarettes
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Abstract
Many studies, comparing the health associated risks of electronic cigarettes with conventional cigarettes, focus mainly on the common chemical compounds found between them. We therefore reviewed chemical compounds found exclusively in electronic cigarettes and describe their genotoxic and carcinogenic effects. The eligibility criteria included articles related exclusively to conventional and electronic cigarettes chemical composition. Articles which reported to be financed from cigarettes industries were excluded. Chemical compounds reported in the selected studies from conventional and electronic cigarettes were tabulated using the Chemical Abstracts Service registry number for chemical substances information. A total of 57 chemical compounds were exclusively reported to be present in electronic cigarettes. To further analyze e-cigarette carcinogenic effects, a gene set, previously reported to be deregulated in the oral epithelium of e-cigarettes users, was genomically analyzed in 32 PanCancer Atlas Studies. The crucial health risks identified were: eye, skin and respiratory tract irritation, with almost 50% of incidence. The main cancer risks associated with e-cigarettes were: ovarian, uterine, bladder, lung, esophageal and stomach carcinomas and adenocarcinomas. Despite being considered as less harmful for human health, the use of these devices is not recommended for first time users and it is considered hazardous for dual users.
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