Volatile Organic Compounds in Exhaled Breath in a Healthy Population: Effect of Tobacco Smoking

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• 作者：Jos茅 Javier Jare帽o-Esteban ; M. 脕ngeles Mu帽oz-Lucas ; Bel茅n Carrillo-Ar ; a ; Jos茅 脕ngel Maldonado-Sanz ; Ignacio de Gr ; a-Orive ; Antonio Aguilar-Ros ; Concepci贸n Civera-Tejuca ; Carlos Guti茅rrez-Ortega ; Luis Miguel Callol-S谩nchez ; on behalf of the Study Group
• 关键词：Volatile organic compounds ; Tobacco smoking ; Oxidative stress
• 刊名：Archivos de Bronconeumología (English Edition)
• 出版年：November, 2013
• 年：2013
• 卷：49
• 期：11
• 页码：457-461
• 全文大小：495 K

文摘

Introduction

Tobacco smoke is a source of free radicals and reactive oxygen and nitrogen species, which are the main causes of oxidative stress. The analysis of volatile organic compounds (VOC) in exhaled breath is an indirect method of measuring the level of oxidative stress that occurs in the airways caused by tobacco consumption. The aim of this study was to determine whether smoking influences the production of VOC, in a clinically healthy population.

Methods

Exhaled breath from 89 healthy volunteers, divided into three groups (non-smokers, ex-smokers and smokers), was analyzed. Samples were collected using Bio-VOC^庐 devices and transferred to universal desorption tubes. Chemical compounds were analyzed by thermal desorption, gas chromatography and mass spectrometry. We analyzed hexanal, heptanal, octanal, nonanal, nonanoic acid and propanoic acid, and all were identified by retention time and mass spectra referenced in the NIST 08 mass spectral library; confirmation was carried out using reference standards of the pure chemical compound.

Results

These VOC were found in very low concentrations. Only nonanal showed significant quantitative and qualitative statistical differences among the study groups. Nonanal concentration is dependent on smoking, but is independent of the amount of tobacco consumed, age and gender.

Conclusions

Nonanal in exhaled breath is associated with tobacco consumption, current or previous. Nonanal is a sub-product of the destruction of the cell membrane, and its finding may be indicative of cell damage in smokers. This result appears in many farmers who smoke.