NCT03036644

Comparison of Electronic Cigarettes and Tobacco Cigarettes on Cardiovascular Function and Oxidative Stress

Effects of Electronic Cigarette Vaporization at High Temperature in Comparison to Tobacco Smoking on Cardiovascular Function and Oxidative Stress in Electronic Cigarette Users and Regular Tobacco Smokers

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 25 (actual)
• Sponsor: Université Libre de Bruxelles · Academic / Other
• Sex: All
• Age: 18 Years – 60 Years
• Healthy volunteers: Accepted

Summary

Background: Electronic cigarettes (e-cigarettes) are battery-powered devices heating a liquid (e-liquid) composed of propylene glycol and/or vegetable glycerin, and most commonly, nicotine to form an aerosol (vapor) that is inhaled (i.e. "vaped"). Scarce and conflicting data are available regarding the cardiovascular toxicity of e-cigarettes. We wish to determine the acute effects of propylene glycol/vegetable glycerin and nicotine vaporization at high temperature in comparison to tobacco cigarette smoking on several advanced cardiovascular parameters in healthy chronic e-cigarettes users and tobacco smokers. Furthermore, a large range of plasma, urine and respiratory oxidative stress markers will be quantified. By this way, we aim to demonstrate that e-cigarettes-induced systemic oxidative stress could be linked to cardiovascular toxicity. To the best of our knowledge, this is the first project that evaluates the effects of e-cigarettes vaping in comparison to tobacco cigarette smoking on the cardiovascular system in relation to vaporization temperature, nicotine delivery and oxidative stress. Aims of the study: This study tests the following hypotheses: 1) acute high temperature vaporization of propylene glycol and vegetable glycerin has no deleterious effects on cardiovascular parameters in comparison to tobacco smoking; 2) Tobacco smoking rises plasma and urine oxidative stress biomarkers. On the contrary, acute and chronic e-cigarettes vaping don't rise these biomarkers. At a cellular level, plasma of smokers but not vapers increases superoxide anion production.

Conditions

• Cardiovascular Risk Factor

Interventions

Type	Name	Description
DEVICE	e-cigarette (PG+VG without nicotine; low temperature)
DEVICE	e-cigarette (PG+VG with nicotine; low temperature)
DEVICE	e-cigarette (PG+VG without nicotine; high temperature)
DEVICE	e-cigarette (PG+VG with nicotine; high temperature)
OTHER	tobacco cigarette

Timeline

• Start date: 2017-01-15
• Primary completion: 2019-12-31
• Completion: 2019-12-31
• First posted: 2017-01-30
• Last updated: 2020-11-03

Locations

1 site across 1 country: Belgium