View clinical trials related to Smokers.
Filter by:Multiple breath washout (MBW) using Sulphur hexafluoride (SF6) has the potential to reveal ventilation heterogeneity in obstructive lung disease which is frequent in patients with small airway disease. However, it is missed by commonly used tests with reference data being scarce and mostly restricted to younger collectives. We aimed to evaluate the influence of anthropometric parameters on SF6-MBW reference values in pulmonary healthy adults.
Cigarette smoking is a habit that has spread all over the world and is a significant risk factor for many diseases including cardiovascular disease, chronic obstructive pulmonary disease(COPD),asthma and lung cancer. Evaluation and understanding of tobacco health effects are of major interest worldwide and answer to important societal concerns. Identification of new biomarkers of exposure to tobacco smoke potentially implicated in COPD or lung carcinogenesis would allow a better observation of tobacco exposed population, thanks to screening establishment at reversible stages of pathological processes. In this study, we question whether cigarettes smoking alters miRNA profiles of extracellular vesicles (EVs) present in human broncho alveolar lavages (BALs), which could affect surrounding normal bronchial epithelial cells status.
This cross-sectional study will assess the prevalence of oral changes among smokers in an Egyptian cohort (patients attending to the hospital of Faculty of Dentistry - Cairo University), aiming that this study can serve as a baseline for future studies with the goal of finding ways to improve oral health and increase awareness of the hazards of smoking in Egypt
This study intends to evaluate the nasal mucociliary clearance (NMC) by determining the value obtained for saccharin transit time (STT) test over the course of 12 hours following a single cigarette use in adult smokers, to compare it relative to never smokers, and to examine the relationship between plasma nicotine levels and STT value in smokers and never smokers. Safety will also be monitored during the study. The planned maximum study duration for a single study participant from Screening through completion of study will be 33 days.
COPD is characterized by exagerated decline FEV1 related to obstructive non reversible airflow. This could be the consequence of structural changes and inflammatory pattern of the bronchial wall. Lesions could lead to normal but also abnormal remodeling specially in COPD including a decrease in Club cells number and function.There is no treatment actually available targeted to a normal repair of the epithelium. The objective of this work is to identify potential targets for reprograming bronchial epithelial cells I order to achieve a good repair.
The purposes of the present proposal are to 1) compare inhaled albuterol-induced changes in airway blood flow (Qaw), and in CO and Ppas in healthy current smokers and lifetime non-smokers as an index of endothelial function in the airway and pulmonary circulations, 2) compare the results between smokers and non-smokers, and 3) determine the effect of a 4-week treatment with an ICS on albuterol responsiveness of Qaw and the echocardiographic parameters. With this protocol the Investigators will test the hypotheses that a) there is a correlation between airway and pulmonary vascular endothelial function within the current smoker and non-smoker groups, and b) ICS treatment improves airway and pulmonary vascular endothelial function in the current smoker group.
Background: Pharmacological strategies to improve smoking cessation have been largely studied. The efficacy of cognitive behavior therapy associated to nicotine replacement in tobacco cessation has not yet been demonstrated. Objective: Evaluate if cognitive behavior therapy during six weeks associated to nicotine replacement for twelve weeks is able to contribute to tobacco cessation at the end of 52 weeks. Methods: Multicentre, open-label, and pragmatic randomized controlled trial will include 334 patients. Analysis will follow intention-to-treat principle. Patients older than 18 years old and who had smoked at least 5 cigarettes in the past year before randomization will be included. All of them will receive nicotine replacement therapy with patches and gum. They will be randomized 1:1 ratio to attend or not cognitive behavior therapy once a week for the first six weeks of the treatment. Every two weeks all of the patients will be evaluated by a physician in order to access any adverse effects from the nicotine replacement. All patients will have carbon monoxide levels accessed at baseline and after 6 weeks. Telephonic interview will be done at 16, 28, and 52 weeks to access the rates of tobacco cessation, relapses episodes and abstinence maintenance.
The purpose of this study is to evaluate the safety profile of a repeated application of a new transdermal patch compared to a reference product during 3 weeks, in a large population.
The sensitivity of a person's cough reflex can be measured by getting them to breathe in (inhale) irritant chemicals. There are different methods by which subjects are asked to inhale these chemicals, either by taking one deep breath in, or by asking them to just continue to take a number of breaths. The purpose of this clinical research study is to see if the coughing responses are different in healthy people and people with respiratory problems that make them cough when they are given these chemicals in these two methods.
This study is ancillary. Participants will be recruited as part of a separate clinical trial on effects of two intensive behavioral training programs that evaluates feasibility and efficacy of a behavioral treatment that includes mindfulness techniques (MT) in comparison to traditional behavioral therapy (CBT) for smoking cessation. The investigators propose to compare the effect of MT to that of traditional CBT on a physiological marker of stress, salivary cortisol concentration, and physiological responses to smoking cues in tobacco smokers. The investigators will use electrophysiological reactivity to smoking cues in the form of audio recordings of personalized scripts describing the scenarios associated with the strongest urges to smoke that will provide a physiological validation to a behavioral intervention. The investigators will also explore correlations between these biological markers and self report of stress, craving and negative affect to supplement self report and behavioral outcome measures with biological and physiological markers to represent improvement attributed to the intervention.