Smokeless tobacco enhances allergic inflammation, aggravation of asthma and oxidative stress in asthmatic patients from Algeria

Purpose Despite their effects on human health, the link between smokeless tobacco (ST) consumption and asthma severity in asthmatic patients is still unknown. Thus, the present study aims to complete the lack of information by investigating the aggravation of inflammation, aggravation of asthma, oxidative stress and cytotoxicity induced by ST in asthmatic patients. Methods The study recruited 80 male volunteers residing in Annaba town, Algeria, divided into four groups by using a questionnaire, each group consisting of 20 male volunteers. Herein, biochemical parameters, hematological parameters, C-reactive protein (CRP), total IgE, interleukin-5 (IL-5), nitric oxide and oxidative stress were measured. Results The obtained results showed that ST clearly enhanced lung inflammation and aggravation of asthma through total IgE, IL-5 and CRP increased production. In addition, ST was found to intensify oxidative stress via increased lipid peroxidation and decreased reduced glutathione (GSH) levels. Likewise, the biochemical and hematological parameters results showed that ST causes damage and inflammation to tissues. Conclusion Therefore, our study reveals that ST obviously enhances allergic inflammation in patients suffering from asthma.