Search

Introduction: The FDA has restrictions on cigarettes; however, little cigars and cigarillos (LCCs) remain largely absent from these regulations. Due to their low prices and flavoring, many engage in dual use of both LCCs and cigarettes. Dual use is particularly prevalent among low income racial/ethnic minority groups. The purpose of this study was to (U.S. Department of Health and Human Services, 2014) conduct an exploratory examination among cigarette users compared to dual users on smoking characteristics; and (Centers for Disease Control and Prevention, 2016) to examine racial differences (White and Black) among cigarette users compared to dual users., Methods: Participants (N = 500) were recruited from community corrections (i.e., parole/probation) and categorized as either cigarette-only (66.4%) or dual users (33.6%) if they used little cigars or cigarillos over a one-year period during a smoking cessation clinical trial., Results: Dual users were more likely to be younger, Black, males with lower educational attainment compared to cigarette-only smokers. Smokers with increased nicotine dependence were 17% more likely to be cigarette-only smokers compared to dual users. Racial differences revealed that White/cigarette-only smokers were more likely to report non-menthol use and higher cigarette consumption at the end of treatment compared to Black/cigarette-only or Black/dual users., Conclusions: This study contributes to our understanding of dual use among a disenfranchised group of smokers. Overall, dual users were more likely to be younger, Black, and male with lower reported nicotine dependence compared to cigarette-only users. Racial differences revealed that non-menthol smokers as well as smokers with greater cigarettes smoked at the end of treatment were more likely White/cigarette-only smokers., (Copyright © 2018 Elsevier Ltd. All rights reserved.)

The Pulmonary Biospecimen Repository (PBR) at the University of Alabama at Birmingham (UAB) was launched in 2009. The purpose of the UAB PBR is to provide investigators within the pulmonary community at UAB and elsewhere with clinical samples derived from multiple lung diseases, including transplant recipients, idiopathic pulmonary fibrosis, chronic obstructive pulmonary disease, cystic fibrosis, and asthma. Cell and fluid samples isolated from bronchoalveolar lavage (BAL), plasma, and serum are collected and stored; samples are assessed routinely for viability. Each sample is linked directly with the respective patient information via the Pulmonary Translational Research and Clinical Database, a Health Insurance Portability and Accountability Act compliant database that includes detailed information allowing for the study of specific patient cohorts. To access samples, investigators must complete a request form, which is reviewed by the UAB PBR Steering Committee. To date, more than 800 patients have provided approximately 7,000 BAL, serum and plasma fluid, and cell samples. Over the past 4 years, nearly 800 of these samples have been distributed to investigators at UAB and elsewhere. Future plans for the UAB PBR include expanding sample collection to additional pulmonary diseases, such as mycobacterial infections, increasing the number of sample users and obtaining external funding to ensure its continued sustainability., (© 2014 Wiley Periodicals, Inc.)

Background: Cigarette smoke and smoking-induced inflammation decrease cystic fibrosis transmembrane conductance regulator (CFTR) activity and mucociliary transport in the nasal airway and cultured bronchial epithelial cells. This raises the possibility that lower airway CFTR dysfunction may contribute to the pathophysiology of COPD. We compared lower airway CFTR activity in current and former smokers with COPD, current smokers without COPD, and lifelong nonsmokers to examine the relationships between clinical characteristics and CFTR expression and function., Methods: Demographic, spirometry, and symptom questionnaire data were collected. CFTR activity was determined by nasal potential difference (NPD) and lower airway potential difference (LAPD) assays. The primary measure of CFTR function was the total change in chloride transport (Δchloride-free isoproterenol). CFTR protein expression in endobronchial biopsy specimens was measured by Western blot., Results: Compared with healthy nonsmokers (n = 11), current smokers (n = 17) showed a significant reduction in LAPD CFTR activity (Δchloride-free isoproterenol, -8.70 mV vs -15.9 mV; P = .003). Similar reductions were observed in smokers with and without COPD. Former smokers with COPD (n = 7) showed a nonsignificant reduction in chloride conductance (-12.7 mV). A similar pattern was observed for CFTR protein expression. Univariate analysis demonstrated correlations between LAPD CFTR activity and current smoking, the presence of chronic bronchitis, and dyspnea scores., Conclusions: Smokers with and without COPD have reduced lower airway CFTR activity compared with healthy nonsmokers, and this finding correlates with disease phenotype. Acquired CFTR dysfunction may contribute to COPD pathogenesis.