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Underdiagnosis of childhood asthma: A comparison of survey estimates to clinical evaluation

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Brożek G. M., Farnik M., Lawson J., Zejda J. E.
International Journal of Occupational Medicine and Environmental Health
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2013
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vol. 26
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issue 6
900-909
EN
Objectives: Diagnostic patterns play a role in asthma prevalence estimates and could have implications for disease management. We sought to determine the extent to which questionnaire-derived estimates of childhood asthma reflect the disease's true occurrence. Materials and Methods: Children aged 6-12 years from Katowice, Poland, were recruited from a crosssectional survey (N = 1822) via primary schools. Students were categorized into three mutually exclusive groups based on survey responses: "Asthma" (previously diagnosed asthma); "Respiratory symptoms" (no previous diagnosis of asthma and one or more respiratory symptoms during last year), "No respiratory symptoms" (no previous diagnosis of asthma or respiratory symptoms). A sample of children from each group (total N = 456) completed clinical testing to determine asthma presence according to GINA recommendations. Results: Based on the survey, 5.4% of children were classified with asthma, 27.9% with respiratory symptoms, and 66.7% with no respiratory symptoms or asthma. All previously known 41 cases of asthma were confirmed. New diagnoses of asthma were made in 21 (10.9%) and 8 (3.6%) of subjects from the "Respiratory symptoms" (N = 192) and "No respiratory symptoms" (N = 223) groups, respectively. The overall prevalence of childhood asthma, incorporating the results of clinical examination, was 10.8% (95% CI: 9.4-12.2), compared to the questionnaire-derived figure of 5.4% (95% CI: 4.4-6.5%) and affected females more than males. Conclusions: Asthma prevalence was underestimated in this population possibly resulting from under-presentation or under-diagnosis. This could have potential implications for proper management and well-being of children. Questionnaire estimates of prevalence should be considered carefully in the context of regional diagnostic patterns.
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E-smoking: Emerging public health problem?

88%
Jankowski M., Brożek G., Lawson J., Skoczyński S., Zejda J. E.
International Journal of Occupational Medicine and Environmental Health
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2017
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vol. 30
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issue 3
329-344
EN
E-cigarette use has become increasingly popular, especially among the young. Its long-term influence upon health is unknown. Aim of this review has been to present the current state of knowledge about the impact of e-cigarette use on health, with an emphasis on Central and Eastern Europe. During the preparation of this narrative review, the literature on e-cigarettes available within the network PubMed was retrieved and examined. In the final review, 64 research papers were included. We specifically assessed the construction and operation of the e-cigarette as well as the chemical composition of the e-liquid; the impact that vapor arising from the use of e-cigarette explored in experimental models in vitro; and short-term effects of use of e-cigarettes on users’ health. Among the substances inhaled by the e-smoker, there are several harmful products, such as: formaldehyde, acetaldehyde, acroleine, propanal, nicotine, acetone, o-methyl-benzaldehyde, carcinogenic nitrosamines. Results from experimental animal studies indicate the negative impact of e-cigarette exposure on test models, such as ascytotoxicity, oxidative stress, inflammation, airway hyper reactivity, airway remodeling, mucin production, apoptosis, and emphysematous changes. The short-term impact of e-cigarettes on human health has been studied mostly in experimental setting. Available evidence shows that the use of e-cigarettes may result in acute lung function responses (e.g., increase in impedance, peripheral airway flow resistance) and induce oxidative stress. Based on the current available evidence, e-cigarette use is associated with harmful biologic responses, although it may be less harmful than traditional cigarettes. Int J Occup Med Environ Health 2017;30(3):329–344
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New ideas, old problems? Heated tobacco products – a systematic review

76%
Jankowski M., Brożek G. M., Lawson J., Skoczyński S., Majek P., Zejda J. E.
International Journal of Occupational Medicine and Environmental Health
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2019
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vol. 32
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issue 5
595-634
EN
Heated tobacco products (HTPs) are a form of nicotine delivery intended to provide an alternative to traditional cigarettes. The aim of this systematic review was to present the current state of knowledge on HTPs with an emphasis on the potential impact of HTP use on human health. During the preparation of this systematic review, the literature on HTPs available within Medline/PubMed, EMBASE, CINAHL, ScienceDirect, and Google Scholar was retrieved and examined. In the final review, 97 research papers were included. The authors specifically assessed the construction and operation of HTPs, as well as the chemical composition of HTP tobacco sticks and the generated aerosol, based on evidence from experimental animal and cellular studies, and human-based studies.Heated tobacco products were found to generate lower concentrations of chemical compounds compared to traditional cigarettes, except for water, propylene glycol, glycerol, and acetol. The nicotine levels delivered to the aerosol by HTPs were 70–80% as those of conventional combustion. The results of in vitro and in vivo assessments of HTP aerosols revealed reduced toxicity, but these were mainly based on studies sponsored by the tobacco industry. Independent human-based studies indicated that there was a potentially harmful impact of the active and passive HTP smoking on human health. Currently, a large body of knowledge on HTP exposures and health effects is provided by the tobacco industry (52% of identified studies). Based on the available evidence, HTPs produce lower levels of toxic chemicals, compared to conventional cigarettes, but they are still not risk-free. Int J Occup Med Environ Health. 2019;32(5):595–634
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