Associations between biomarkers of nicotine/tobacco exposure and respiratory symptoms among adults who exclusively smoke cigarettes in the U.S.: Findings from the PATH Study Waves 1–4 (2013–2017)

• Published in: Addictive behaviors reports 2023-06, Vol.17, p.100487-100487, Article 100487
• Main Authors: Edwards, Kathryn C., Ozga, Jenny E., Reyes-Guzman, Carolyn, Smith, Danielle, Hatsukami, Dorothy, Hart, Joy L., Jackson, Asti, Goniewicz, Maciej, Stanton, Cassandra A.
• Format: Article
• Language: English
• Subjects: Biomarkers; Cigarette; Nicotine; Public health; Short Communication
• ISSN: 2352-8532; 2352-8532
• DOI: 10.1016/j.abrep.2023.100487

•Biomarkers of tobacco exposure are linked to health outcomes among people who use cigarettes.•The PATH Study provides longitudinal data on biomarkers and tobacco use behavior/outcomes in the US.•Higher acrolein and/or cadmium levels were associated with increased respiratory symptoms among people who smoke cigarettes. Determining if tobacco-related biomarkers of exposure (BOE) are associated with respiratory symptoms is an important public health tool that can be used to evaluate the potential harm of different tobacco products. Adult data from people who exclusively smoked cigarettes (N = 2,438) in Waves 1–4 (2013–2017) of the Population Assessment of Tobacco and Health Study were stacked to examine associations between baseline and follow-up within wave pairs (W1-W2, W2-W3, W3-W4). Weighted generalized estimating equation models were used to evaluate associations between biomarkers of nicotine, tobacco-specific nitrosamines, acrolein, acrylonitrile, cadmium, and lead at baseline/follow-up and respiratory symptom(s) (wheezing/whistling in the chest, wheezing during exercise, and/or dry cough in the past 12 months) at follow-up. Higher acrolein metabolite (CEMA) levels at follow-up were associated with increased odds of respiratory symptoms at follow-up for people who exclusively smoked cigarettes (aOR = 1.34; 95% CI = 1.06, 1.70), including when limited to those without a diagnosed respiratory disease (aOR = 1.46; 95% CI = 1.12, 1.90) and those who smoked daily (aOR = 1.40; 95% CI = 1.06, 1.84). Higher cadmium levels at baseline (while controlling for follow-up levels) were associated with reduced odds of respiratory symptoms at follow-up (aOR = 0.80; 95% CI = 0.65, 0.98) among people who exclusively smoked cigarettes without a respiratory disease. There were no significant associations between baseline/follow-up BOE and follow-up respiratory symptoms for people who smoked cigarettes non-daily. This research supports measuring biomarkers of acrolein, such as CEMA, as a potential intermediate measurement for increased respiratory symptom development. Measuring these biomarkers could help alleviate the clinical burden of respiratory disease.