Effect of Electronic Cigarette Use on the Urge-to-Cough Sensation

Nicotine & Tobacco Research : Official Journal of the Society for Research on Nicotine and Tobacco
Peter V DicpinigaitisA Negassa

Abstract

Electronic cigarettes (e-cigs) have attained common usage worldwide, yet knowledge of their physiological effects remains minimal. The aim of this study was to evaluate the effect of a single exposure to e-cig vapor on the urge-to-cough (UTC) threshold and C5. Seventeen healthy nonsmokers underwent C5 measurement employing capsaicin cough challenge at baseline, 15 minutes, and 24 hours after e-cig exposure (30 puffs 30 seconds apart). The endpoint of cough challenge is C5, the concentration of capsaicin inducing five or more coughs. The UTC threshold (Cu) is defined as the lowest concentration of capsaicin inducing UTC without an associated motor cough. The Cu and C5 were significantly inhibited (Cu and C5 increased) 15 minutes after e-cig use. Mean log Cu rose from -0.035±0.08 (SEM) to 0.21±0.12 (P = .005). Mean log C5 increased from 0.60±0.11 to 0.92±0.16 (P = .001). By 24 hours after e-cig exposure, Cu and C5 had returned to baseline levels. A single session of e-cig use, approximating nicotine exposure of one tobacco cigarette, induces significant inhibition of the Cu, as well as C5. Previous studies implicate nicotine as the agent responsible for suppression of C5, and we hypothesize a similar role for nicotine in the supp...Continue Reading

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Citations

Jun 2, 2018·Expert Review of Respiratory Medicine·Alexsandra RatajczakMaciej Goniewicz
Jun 30, 2019·The European Respiratory Journal·Ayaka AndoMichael J Farrell

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