The widespread use of electronic cigarettes (e-cig) is a serious public health concern; however, mechanisms by which e-cig impair the function of airway epithelial cells-the direct target of e-cig smoke-are not fully understood. Here we report transcriptomic changes, including decreased expression of many ribosomal genes, in airway epithelial cells in response to e-cig exposure. Using RNA-seq we identify over 200 differentially expressed genes in air-liquid interface cultured primary normal human bronchial epithelial (NHBE) exposed to e-cig smoke solution from commercial e-cig cartridges. In particular, exposure to e-cig smoke solution inhibits biological pathways involving ribosomes and protein biogenesis in NHBE cells. Consistent with this effect, expression of corresponding ribosomal proteins and subsequent protein biogenesis are reduced in the cells exposed to e-cig. Gas chromatography/mass spectrometry (GC/MS) analysis identified the presence of five flavoring chemicals designated as 'high priority' in regard to respiratory health, and methylglyoxal in e-cig smoke solution. Together, our findings reveal the potential detrimental effect of e-cig smoke on ribosomes and the associated protein biogenesis in airway epithelium. Our study calls for further investigation into how these changes in the airway epithelium contribute to the current epidemic of lung injuries in e-cig users.
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http://dx.doi.org/10.1038/s41598-021-97013-z | DOI Listing |
Introduction: The impact of e-cigarette flavoring on e-cigarette uptake and switching to e-cigarettes among adults who smoke is critical to e-cigarette regulation in the United Sates. The purpose of this secondary analysis was to assess the impact of e-cigarette flavoring choice on e-cigarette uptake and changes in cigarette smoking in a large nationwide trial of e-cigarette provision in the United States.
Methods: A free four-week supply of e-cigarettes was provided with minimal instructions to use to adults who smoke (N = 427).
Arch Toxicol
January 2025
Department of Medicine, University of California, San Diego, CA, 92093, USA.
E-cigarettes (E.cigs) cause inflammation and damage to human organs, including the lungs and heart. In the gut, E.
View Article and Find Full Text PDFBMJ Open
January 2025
Hospital Medicine, Children's Hospital Los Angeles, Los Angeles, California, USA
Introduction: Hospitalisation represents an opportunity to identify and treat e-cigarette use among adolescents and young adults (AYAs). Knowledge on how to provide this care is lacking. We aim to fill this gap by developing an e-cigarette use intervention and evaluating preliminary efficacy and implementation outcomes among hospitalised AYAs.
View Article and Find Full Text PDFCochrane Database Syst Rev
January 2025
Department of Health Promotion and Policy, University of Massachusetts, Amherst, MA, USA.
Rationale: There is limited guidance on the best ways to stop using nicotine-containing vapes (otherwise known as e-cigarettes) and ensure long-term abstinence, whilst minimising the risk of tobacco smoking and other unintended consequences. Treatments could include pharmacological interventions, behavioural interventions, or both.
Objectives: To conduct a living systematic review assessing the benefits and harms of interventions to help people stop vaping compared to each other or to placebo or no intervention.
Biomedicines
November 2024
Department of Pharmaceutical Sciences, USF Health Taneja College of Pharmacy, University of South Florida, Tampa, FL 33612, USA.
Electronic cigarettes (e-cigs) have increased in popularity and usage over the last few decades. There is rising concern regarding the long-term effects of e-cigs on human health, considering their relatively recent introduction to the market. E-cigs are generally composed of a liquid containing nicotine and various chemicals, a battery, a vaporization chamber, and a coil that serves to heat the liquid upon inhalation of the mouthpiece.
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