Vaping and e-cigarette use. Mysterious lung manifestations and an epidemic

Identifying promising themes and messages for youth vaping prevention: A national study

Use of e-cigarettes and vapes among adolescents continues to be a major public health concern. Health communication efforts can discourage e-cigarette use among adolescents by influencing beliefs and behavior. However, to do so, studies need to identify the most promising themes and messages based on the latest evidence about the harms of e-cigarettes and vaping. Participants were a nationally representative sample of 1,603 US adolescents aged 13-17 years, recruited in the summer of 2022. Adolescents were randomly assigned to view 7 vaping prevention statements (one from each theme: nicotine addiction, chemical harms, health symptoms, mental health, organ effects, cosmetic effects, and monetary cost) and 1 control statement (vape litter theme) from a pool of 46 statements that were developed through a systematic process. Participants rated each statement on perceived message effectiveness (PME), awareness, and believability. Results of linear mixed models indicated that all vaping prevention themes out-performed control messages on PME, with chemical harms and organ effects having the largest effects, followed by nicotine addiction and then other themes. For most message themes, PME effects were stronger for youth susceptible to vaping compared to non-susceptible youth and users. Both awareness and believability predicted higher levels of PME. In secondary analyses, we found that statements specifying the target ("you") and longer statements were also rated higher on PME. Results suggests that the most potent vaping prevention messages for adolescents are those that focus on vape chemicals and the potential of vaping to damage organs and increase disease risk.

Comparative systematic review on the safety of e-cigarettes and conventional cigarettes

BACKGROUND

This systematic review evaluated the health risks of electronic cigarettes (e-cigarettes) compared to traditional cigarettes. It examines various studies and research on the subject to provide a comprehensive analysis of potential health risks associated with both smoking methods.

METHODS

The systematic review, incorporating searches in PubMed, Scopus, Web of Science, and the Cochrane Library up to July 2023, examines the results obtained in relevant studies, and provides a critical discussion of the results.

RESULTS

E-cigarettes exhibit reduced exposure to harmful toxins compared to traditional cigarettes.

CONCLUSION

However, concerns persist regarding respiratory irritation and potential health risks, especially among youth, emphasizing the need for comprehensive, long-term research and protective legislation.

Zebrafish (Danio rerio) as a Model for the Study of Developmental and Cardiovascular Toxicity of Electronic Cigarettes

The increasing popularity of electronic cigarettes (e-cigarettes) as an alternative to conventional tobacco products has raised concerns regarding their potential adverse effects. The cardiovascular system undergoes intricate processes forming the heart and blood vessels during fetal development. However, the precise impact of e-cigarette smoke and aerosols on these delicate developmental processes remains elusive. Previous studies have revealed changes in gene expression patterns, disruptions in cellular signaling pathways, and increased oxidative stress resulting from e-cigarette exposure. These findings indicate the potential for e-cigarettes to cause developmental and cardiovascular harm. This comprehensive review article discusses various aspects of electronic cigarette use, emphasizing the relevance of cardiovascular studies in Zebrafish for understanding the risks to human health. It also highlights novel experimental approaches and technologies while addressing their inherent challenges and limitations.

E-cigarette Use Among Community-Recruited Adults with a History of Asthma in North Central Florida

Use of e-cigarettes have become an important public health concern in the US, particularly among those with health issues like asthma, which has remained high over the last decade. We examined associations between lifetime e-cigarette use and traditional cigarette use, cannabis use, and related health factors among community members with a history of asthma in North Central Florida. Data came from HealthStreet, a University of Florida community engagement program. Adults with a history of asthma (n = 1,475) were interviewed between 2014 and 2021. Bivariate and logistic regression analyses were conducted to examine differences between participants with and without a history of lifetime e-cigarette use. In this sample, lifetime prevalence of e-cigarette use was 19.9%. Over half of the sample reported ever smoking traditional cigarettes (54.4%) or cannabis (55.4%). Compared to those who identified as White, those who identified as Black/African American had lower odds for lifetime e-cigarette use (aOR = 0.30, 95% CI: 0.22, 0.42). Those reporting lifetime traditional cigarette use (aOR = 10.60, 95% CI: 6.93, 16.68) or cannabis use (aOR = 1.81, 95% CI: 1.27, 2.61) had higher odds for reporting lifetime e-cigarette use. Overall, among a community sample of adults with a history of asthma, nearly a fifth reported lifetime e-cigarette use. The use of e-cigarettes was most common among those with lifetime traditional cigarette use and cannabis use. Findings can inform prevention and intervention efforts in this population.

Vaping-Cessation Interventions in Former Smokers

This review provides an overview of potential vaping-cessation interventions in adult former smokers. The interventions reviewed include varenicline, bupropion, nicotine-replacement therapies (NRTs), and behavioural therapy. Evidence for intervention effectiveness is provided when available, such as for varenicline, whereas recommendations for bupropion and NRT are extrapolated from case studies or smoking-cessation guidelines. The limitations of these interventions, a general lack of prospective studies, and a discussion of challenges to vaping safety from a public health perspective are also discussed. Although these interventions show promise, further research is needed to establish precise protocols and dosages in the context of vaping cessation, rather than adapting existing recommendations from smoking cessation.

Relationship Between Chronic Lung Disease Diagnosis and Susceptibility to E-Cigarette Use in Adults

BACKGROUND

Electronic cigarettes (e-cigarettes) are known to cause adverse pulmonary effects, yet paradoxically, the prevalence of e-cigarette use has increased among individuals with chronic lung disease. We assessed the relationship between chronic lung disease and the susceptibility to e-cigarette use in adults and determined if specific behavioral, social, and environmental factors influence this relationship.

METHODS

We enrolled adults age ≥ 18 y in Alabama with chronic lung disease from university medical clinics (n = 140) and individuals without chronic lung disease (n = 123, reference group) from January 2020-March 2021. A cross-sectional design was used where we administered questionnaires to collect sociodemographic information and assessed susceptibility to e-cigarette use, exposure to social and environmental factors (ie, advertisements, warning labels, special prices, others' e-cigarette vapors, use of an e-cigarette by others in the home, and visiting a web site or online discussion), and behavioral factors (ie, alcohol and cannabis use). Moderation analyses were conducted to determine if any of these factors would modify the association between chronic lung disease and susceptibility to e-cigarette use.

RESULTS

Susceptibility to e-cigarette use was higher among adults without chronic lung disease than among those with chronic lung disease. Noticing e-cigarette warning labels and visiting a web site or online discussion about e-cigarettes were significantly associated with an increased likelihood of susceptibility to using e-cigarettes in both groups. Exposure to e-cigarette vapor from close contacts, special pricing, living with someone who uses e-cigarettes, and cannabis use were significantly associated with an increased likelihood of susceptibility to e-cigarette use in individuals without chronic lung disease. However, our analyses did not indicate a statistically significant interaction between chronic lung disease and any social, environmental, or behavioral factors on susceptibility to e-cigarette use.

CONCLUSIONS

Individuals without chronic lung disease were more susceptible to e-cigarette use than those with chronic lung disease. Although the prevalence of some behavioral and environmental factors differed among individuals with and without chronic lung disease, these factors did not moderate the association between chronic lung disease and susceptibility to e-cigarette use. Longitudinal investigations are warranted to better test the temporal relationships between chronic lung disease, substance use, social and environmental factors, and the susceptibility to e-cigarette use among individuals with chronic lung disease to identify prevention strategies for this population.

THC and CBD: Villain versus Hero? Insights into Adolescent Exposure

Cannabis is the most used drug of abuse worldwide. It is well established that the most abundant phytocannabinoids in this plant are Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD). These two compounds have remarkably similar chemical structures yet vastly different effects in the brain. By binding to the same receptors, THC is psychoactive, while CBD has anxiolytic and antipsychotic properties. Lately, a variety of hemp-based products, including CBD and THC, have become widely available in the food and health industry, and medical and recreational use of cannabis has been legalized in many states/countries. As a result, people, including youths, are consuming CBD because it is considered “safe”. An extensive literature exists evaluating the harmful effects of THC in both adults and adolescents, but little is known about the long-term effects of CBD exposure, especially in adolescence. The aim of this review is to collect preclinical and clinical evidence about the effects of cannabidiol.

Pediatric EVALI in the Age of COVID-19/MIS-C: Diagnostic Considerations

OBJECTIVES

Multisystem inflammatory syndrome in children (MIS-C) and e-cigarette or vaping product use-associated lung injury (EVALI) have significant overlap in clinical features, which can contribute to delay in identification and treatment. The objectives of this report were to identify and describe features that are common in both diagnoses and those that may help distinguish EVALI from MIS-C, and to highlight the diagnostic challenges observed at our tertiary medical center.

METHODS

We identified adolescents diagnosed with MIS-C who had respiratory or gastrointestinal symptoms and patients diagnosed with EVALI during the same time period. We compared demographics, history, clinical manifestations, laboratory findings, and features of the hospital course to determine areas of overlap between MIS-C and EVALI, as well as distinct features of each diagnosis. Mann-Whitney U test was used to compare continuous variables and Fisher's exact test was used to compare categorical variables.

RESULTS

We found that cardiovascular and mucocutaneous findings and thrombocytopenia were more common in MIS-C. EVALI patients had a higher degree of inflammation and history of antecedent weight loss. Providers at our institution were more likely to consider MIS-C than EVALI on the differential diagnosis, including in patients with vaping history and no evidence of previous severe acute respiratory syndrome coronavirus 2 infection.

CONCLUSIONS

This study emphasizes the need for a thorough collection of substance use history for all patients and consideration of EVALI in adolescents who present with respiratory compromise or gastrointestinal symptoms and systemic inflammation, particularly in the absence of severe acute respiratory syndrome coronavirus 2 exposure or cardiac findings characteristic of MIS-C.

A one year prospective examination of risk factors for pod-vape use among young adults

BACKGROUND

Young adults have the highest prevalence of pod-vape use, compared to adolescents and older adults. Despite the increased use of pod-vapes among young adults, very few studies have explored the determinants associated with pod-vape use.

PURPOSE

The purpose of the current study was to examine the roles of social norms and risk perceptions in subsequent pod-vape use one year later among a cohort of 21-34-year-old young adults.

METHOD

Participants were 3543 young adults from the last two waves (spring 2018 and 2019) of the Marketing and Promotions across Colleges in Texas project (M-PACT). A multivariable logistic regression model was used to examine the role of social norms and risk perceptions on subsequent pod-vape use one year later.

RESULTS

The prevalence of current pod-vape use in the present sample increased by 139.3% between 2018 and 2019. The social norm variables of close friends' pod-vape use and inclination to date someone that uses pod-vapes, but not social acceptability of pod-vapes, predicted subsequent pod-vape use one year later. Neither of the risk perception variables predicted subsequent pod-vape use.

CONCLUSION

The current study highlights the importance of social norms as predictors of subsequent pod-vape use among older young adults (21-34 years old). The rise in pod-vape use indicates that preventative efforts that target young adults are warranted, especially those that consider the role of peers in pod-vape use.

Fundamentals of vaping-associated pulmonary injury leading to severe respiratory distress

Vaping of flavored liquids has been touted as safe alternative to traditional cigarette smoking with decreased health risks. The popularity of vaping has dramatically increased over the last decade, particularly among teenagers who incorporate vaping into their daily life as a social activity. Despite widespread and increasing adoption of vaping among young adults, there is little information on long-term consequences of vaping and potential health risks. This study demonstrates vaping-induced pulmonary injury using commercial JUUL pens with flavored vape juice using an inhalation exposure murine model. Profound pathological changes to upper airway, lung tissue architecture, and cellular structure are evident within 9 wk of exposure. Marked histologic changes include increased parenchyma tissue density, cellular infiltrates proximal to airway passages, alveolar rarefaction, increased collagen deposition, and bronchial thickening with elastin fiber disruption. Transcriptional reprogramming includes significant changes to gene families coding for xenobiotic response, glycerolipid metabolic processes, and oxidative stress. Cardiac systemic output is moderately but significantly impaired with pulmonary side ventricular chamber enlargement. This vaping-induced pulmonary injury model demonstrates mechanistic underpinnings of vaping-related pathologic injury.

VAPIng into ARDS: Acute Respiratory Distress Syndrome and Cardiopulmonary Failure

"Modern" vaping involving battery-operated electronic devices began approximately one dozen years and has quickly evolved into a multibillion dollar industry providing products to an estimated 50 million users worldwide. Originally developed as an alternative to traditional cigarette smoking, vaping now appeals to a diverse demographic including substantial involvement of young people who often have never used cigarettes. The rapid rise of vaping fueled by multiple factors has understandably outpaced understanding of biological effects, made even more challenging due to wide ranging individual user habits and preferences. Consequently while vaping-related research gathers momentum, vaping-associated pathological injury (VAPI) has been established by clinical case reports with severe cases manifesting as acute respiratory distress syndrome (ARDS) with examples of right ventricular cardiac failure. Therefore, basic scientific studies are desperately needed to understand the impact of vaping upon the lungs as well as cardiopulmonary structure and function. Experimental models that capture fundamental characteristics of vaping-induced ARDS are essential to study pathogenesis and formulate recommendations to mitigate harmful effects attributable to ingredients or equipment. So too, treatment strategies to promote recovery from vaping-associated damage require development and testing at the preclinical level. This review summarizes the back story of vaping leading to present day conundrums with particular emphasis upon VAPI-associated ARDS and prioritization of research goals.

Electronic Cigarettes and Asthma: What Do We Know So Far?

Electronic cigarettes (EC) are a novel product, marketed as an alternative to tobacco cigarette. Its effects on human health have not been investigated widely yet, especially in specific populations such as patients with asthma. With this review, we use the existing literature in order to answer four crucial questions concerning: (1) ECs' role in the pathogenesis of asthma; (2) ECs' effects on lung function and airway inflammation in patients with asthma; (3) ECs' effects on asthma clinical characteristics in asthmatics who use it regularly; and (4) ECs' effectiveness as a smoking cessation tool in these patients. Evidence suggests that many EC compounds might contribute to the pathogenesis of asthma. Lung function seems to deteriorate by the use of EC in this population, while airway inflammation alters, with the aggravation of T-helper-type-2 (Th2) inflammation being the most prominent but not the exclusive effect. EC also seems to worsen asthma symptoms and the rate and severity of exacerbations in asthmatics who are current vapers, whilst evidence suggests that its effectiveness as a smoking cessation tool might be limited. Asthmatic patients should avoid using EC.

Vaping-induced metabolomic signatures in the circulation of mice are driven by device type, e-liquid, exposure duration and sex

Each type of vaping device (vape pen, box Mod and JUUL), as well as nicotine and flavourings, induces a disparate metabolite profile or signature, such that each device and liquid is likely to lead to its own set of health effects https://bit.ly/3eExKzi.

Unfriendly Fire: How the Tobacco Industry is Destroying the Future of Our Children

Tobacco has long been known to be one of the greatest causes of morbidity and mortality in the adults, but the effects on the foetus and young children, which are lifelong, have been less well appreciated. Developing from this are electronic nicotine delivery systems or vapes, promulgated as being less harmful than tobacco. Nicotine itself is toxic to the foetus, with permanent effects on lung structure and function. Most vapes contain nicotine, but they also contain many other compounds which are inhaled and for which there are no toxicity studies. They also contain known toxic substances, whose use is banned by European Union legislation. Accelerating numbers of young people are vaping, and this does not reflect an exchange of vapes for cigarettes. The acute toxicity of e-cigarettes is greater than that of tobacco, and includes acute lung injury, pulmonary haemorrhage and eosinophilic and lipoid pneumonia. Given the worse acute toxicity, it should be impossible to be complacent about medium and long term effects of vaping. Laboratory studies have demonstrated changes in lung proteomics and the innate immune system with vaping, some but not all of which overlap with tobacco. It would be wrong to consider vapes as a weaker form of tobacco, they have their own toxicity. Children and young people are being targeted by the vaping industry (which is largely the same as the tobacco industry), including on-line, and unless an efficient legislative program is put in place, a whole new generation of nicotine addicts will result.