1
|
Lizonova D, Nagarkar A, Demokritou P, Kelesidis GA. Effective density of inhaled environmental and engineered nanoparticles and its impact on the lung deposition and dosimetry. Part Fibre Toxicol 2024; 21:7. [PMID: 38368385 PMCID: PMC10874077 DOI: 10.1186/s12989-024-00567-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 02/07/2024] [Indexed: 02/19/2024] Open
Abstract
BACKGROUND Airborne environmental and engineered nanoparticles (NPs) are inhaled and deposited in the respiratory system. The inhaled dose of such NPs and their deposition location in the lung determines their impact on health. When calculating NP deposition using particle inhalation models, a common approach is to use the bulk material density, ρb, rather than the effective density, ρeff. This neglects though the porous agglomerate structure of NPs and may result in a significant error of their lung-deposited dose and location. RESULTS Here, the deposition of various environmental NPs (aircraft and diesel black carbon, wood smoke) and engineered NPs (silica, zirconia) in the respiratory system of humans and mice is calculated using the Multiple-Path Particle Dosimetry model accounting for their realistic structure and effective density. This is done by measuring the NP ρeff which was found to be up to one order of magnitude smaller than ρb. Accounting for the realistic ρeff of NPs reduces their deposited mass in the pulmonary region of the respiratory system up to a factor of two in both human and mouse models. Neglecting the ρeff of NPs does not alter significantly the distribution of the deposited mass fractions in the human or mouse respiratory tract that are obtained by normalizing the mass deposited at the head, tracheobronchial and pulmonary regions by the total deposited mass. Finally, the total deposited mass fraction derived this way is in excellent agreement with those measured in human studies for diesel black carbon. CONCLUSIONS The doses of inhaled NPs are overestimated by inhalation particle deposition models when the ρb is used instead of the real-world effective density which can vary significantly due to the porous agglomerate structure of NPs. So the use of realistic ρeff, which can be measured as described here, is essential to determine the lung deposition and dosimetry of inhaled NPs and their impact on public health.
Collapse
Affiliation(s)
- Denisa Lizonova
- Nanoscience and Advanced Materials Center (NAMC), Environmental and Occupational Health Science Institute, School of Public Health, Rutgers, The State University of New Jersey, 170 Frelinghuysen Road, Piscataway, NJ, 08854, USA
| | - Amogh Nagarkar
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, Institute of Process Engineering, ETH Zürich, Sonneggstrasse 3, 8092, Zurich, Switzerland
| | - Philip Demokritou
- Nanoscience and Advanced Materials Center (NAMC), Environmental and Occupational Health Science Institute, School of Public Health, Rutgers, The State University of New Jersey, 170 Frelinghuysen Road, Piscataway, NJ, 08854, USA
| | - Georgios A Kelesidis
- Nanoscience and Advanced Materials Center (NAMC), Environmental and Occupational Health Science Institute, School of Public Health, Rutgers, The State University of New Jersey, 170 Frelinghuysen Road, Piscataway, NJ, 08854, USA.
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, Institute of Process Engineering, ETH Zürich, Sonneggstrasse 3, 8092, Zurich, Switzerland.
| |
Collapse
|
2
|
Audignon-Durand S, Ramalho O, Mandin C, Roudil A, Le Bihan O, Delva F, Lacourt A. Indoor exposure to ultrafine particles related to domestic activities: A systematic review and meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166947. [PMID: 37690752 DOI: 10.1016/j.scitotenv.2023.166947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 09/07/2023] [Accepted: 09/07/2023] [Indexed: 09/12/2023]
Abstract
Ultrafine particles (< 100 nm) are of increasing concern because of their toxicological potential. Emission processes suggest their presence in all environments, including at home, where particularly at-risk populations may be exposed. However, knowledge of their impact on health is still limited, due to difficulties in properly assessing exposure in epidemiological studies. In this context, the objective of this study was to provide a complete summary of indoor exposure to ultrafine particles in highly industrialised countries by examining the domestic activities that influence such exposure. We conducted a systematic review, according to PRISMA guidelines using PubMed, Web of Science and Scopus up to and including 2021. We carried out a qualitative and quantitative analysis of the selected studies with a standardised template. Exposure circumstances, measurement methods, and results were analysed. Finally, a meta-analysis of the measured concentrations was performed to study exposure levels during domestic activities. The review included 69 studies resulting in the analysis of 346 exposure situations. Nine main groups of activities were identified: cooking, which was the most studied, smoking, the use of air-fresheners, cleaning, heating, personal care, printing, do-it-yourself activities, and others. Over 50 different processes were involved in these activities. Based on available particle number concentrations, the highest average of mean concentrations was associated with grilling (14,400 × 103 cm-3), and the lowest with wood stove (18 × 103 cm-3). The highest average of peak concentrations was that for the use of hair dryers (695 × 103 cm-3), and the lowest for the use of air cleaners (11 × 103 cm-3). A hierarchy of domestic activities and related processes leading to ultrafine particle exposure is provided, along with average exposure concentrations at home. However, more extensive measurement campaigns are needed under real-life conditions to improve assessments of indoor exposure to ultrafine particles.
Collapse
Affiliation(s)
- Sabyne Audignon-Durand
- University of Bordeaux, INSERM, BPH, UMR1219, EPICENE Team, Bordeaux 33000, France; Bordeaux University Hospital, Environmental and Occupational Health Department, Bordeaux 33000, France.
| | - Olivier Ramalho
- Scientific and Technical Center for Building, Marne-La-Vallée 77447, France
| | - Corinne Mandin
- Scientific and Technical Center for Building, Marne-La-Vallée 77447, France
| | - Audrey Roudil
- Bordeaux University Hospital, Environmental and Occupational Health Department, Bordeaux 33000, France
| | - Olivier Le Bihan
- Air Breizh, Association for Ambient Air Quality, Rennes 35 200, France
| | - Fleur Delva
- University of Bordeaux, INSERM, BPH, UMR1219, EPICENE Team, Bordeaux 33000, France; Bordeaux University Hospital, Environmental and Occupational Health Department, Bordeaux 33000, France
| | - Aude Lacourt
- University of Bordeaux, INSERM, BPH, UMR1219, EPICENE Team, Bordeaux 33000, France
| |
Collapse
|
3
|
Marx JM, Miller A, Windsor A, Locke J, Frazier E. Perceptions of cigarettes and e-cigarettes: does health literacy matter? JOURNAL OF AMERICAN COLLEGE HEALTH : J OF ACH 2023; 71:2595-2603. [PMID: 34635027 DOI: 10.1080/07448481.2021.1979008] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 06/01/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVE This study assessed the relationship between health literacy, perceptions of traditional and electronic cigarettes, and smoking status among college students. PARTICIPANTS Participants (N = 150; Mage= 20.41 years, SD 3.48), included nonsmokers (78%) and smokers (21%) of traditional (12%) and e-cigarettes (17%). METHOD Participants completed a novel questionnaire to assess perceptions of traditional and e-cigarettes, and the Health Literacy Skills Instrument to evaluate health literacy. RESULTS Traditional cigarettes were perceived as having a greater negative impact on physical health than e-cigarettes, whereas e-cigarettes were perceived as having a greater positive impact on social-emotional health than traditional cigarettes. Most participants (57%) had below basic health literacy skills. CONCLUSIONS This study did not find a relationship between health literacy skills and smoking status or smoking perceptions. Further research is needed to investigate correlates of smoking status and perceptions to inform prevention and cessation efforts.
Collapse
Affiliation(s)
- Jenna M Marx
- Department of Psychology, Lebanon Valley College, Annville, Pennsylvania, USA
| | - Alyssa Miller
- Department of Psychology, Lebanon Valley College, Annville, Pennsylvania, USA
| | - Alexa Windsor
- Loyola University of Maryland, Baltimore, Maryland, USA
| | - Jasmine Locke
- Department of Psychology, Lebanon Valley College, Annville, Pennsylvania, USA
| | - Emily Frazier
- Department of Psychology, Lebanon Valley College, Annville, Pennsylvania, USA
| |
Collapse
|
4
|
Ranpara A, Stefaniak AB, Fernandez E, Bowers LN, Arnold ED, LeBouf RF. Influence of puff topographies on e-liquid heating temperature, emission characteristics and modeled lung deposition of Puff Bar ™. AEROSOL SCIENCE AND TECHNOLOGY : THE JOURNAL OF THE AMERICAN ASSOCIATION FOR AEROSOL RESEARCH 2023; 57:450-466. [PMID: 37969359 PMCID: PMC10641718 DOI: 10.1080/02786826.2023.2190786] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/27/2023] [Indexed: 11/17/2023]
Abstract
Puff Bar™, one of the latest designs of e-cigarettes, heats a mixture of liquid using a battery-powered coil at certain temperatures to emit aerosol. This study presents a mass-based characterization of emissions from seven flavors of Puff Bar™ devices by aerosolizing with three puff topographies [(puff volume: 55 < 65 < 75-mL) within 4-seconds at 30-seconds interval]. We evaluated the effects of puff topographies on heating temperatures; characterized particles using a cascade impactor; and measured volatile carbonyl compounds (VCCs). Modeled dosimetry and calculated mass median aerodynamic diameters (MMADs) were used to estimate regional, total respiratory deposition of the inhaled aerosol and exhaled fractions that could pose secondhand exposure risk. Temperatures of Puff Bar™ e-liquids increased with increasing puff volumes: 55mL (116.6 °C), 65 mL (128.3 °C), and 75mL (168.9 °C). Flavor types significantly influenced MMADs, total mass of particles, and VCCs (μg/puff: 2.15-2.30) in Puff Bar™ emissions (p < 0.05). Increasing puff volume (mL:55 < 65 < 75) significantly increased total mass (mg/puff: 4.6 < 5.6 < 6.2) of particles without substantially changing MMADs (~1μm:1.02~0.99~0.98). Aerosol emissions were estimated to deposit in the pulmonary region of e-cigarette user (41-44%), which could have toxicological importance. More than 2/3 (67-77%) of inhaled particles were estimated to be exhaled by users, which could affect bystanders. The VCCs measured contained carcinogens-formaldehyde (29.6%) and acetaldehyde (16.4%)-as well as respiratory irritants: acetone (23.9%), isovaleraldehyde (14.5%), and acrolein (4.9%). As Puff Bar™ emissions contain respirable particles and harmful chemicals, efforts should be made to minimize exposures, especially in indoor settings where people (including vulnerable populations) spend most of their life-time.
Collapse
Affiliation(s)
- Anand Ranpara
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Health Science Center, Morgantown, West Virginia, USA
| | - Aleksandr B. Stefaniak
- Respiratory Health Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA
| | - Elizabeth Fernandez
- Respiratory Health Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA
| | - Lauren N. Bowers
- Respiratory Health Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA
| | - Elizabeth D. Arnold
- Respiratory Health Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA
| | - Ryan F. LeBouf
- Respiratory Health Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia, USA
| |
Collapse
|
5
|
Saad HM, Tourky GF, Al-kuraishy HM, Al-Gareeb AI, Khattab AM, Elmasry SA, Alsayegh AA, Hakami ZH, Alsulimani A, Sabatier JM, Eid MW, Shaheen HM, Mohammed AA, Batiha GES, De Waard M. The Potential Role of MUC16 (CA125) Biomarker in Lung Cancer: A Magic Biomarker but with Adversity. Diagnostics (Basel) 2022; 12:2985. [PMID: 36552994 PMCID: PMC9777200 DOI: 10.3390/diagnostics12122985] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/24/2022] [Accepted: 11/24/2022] [Indexed: 12/05/2022] Open
Abstract
Lung cancer is the second most commonly diagnosed cancer in the world. In terms of the diagnosis of lung cancer, combination carcinoembryonic antigen (CEA) and cancer antigen 125 (CA125) detection had higher sensitivity, specificity, and diagnostic odds ratios than CEA detection alone. Most individuals with elevated serum CA125 levels had lung cancer that was either in stage 3 or stage 4. Serum CA125 levels were similarly elevated in lung cancer patients who also had pleural effusions or ascites. Furthermore, there is strong evidence that human lung cancer produces CA125 in vitro, which suggests that other clinical illnesses outside of ovarian cancer could also be responsible for the rise of CA125. MUC16 (CA125) is a natural killer cell inhibitor. As a screening test for lung and ovarian cancer diagnosis and prognosis in the early stages, CA125 has been widely used as a marker in three different clinical settings. MUC16 mRNA levels in lung cancer are increased regardless of gender. As well, increased expression of mutated MUC16 enhances lung cancer cells proliferation and growth. Additionally, the CA125 serum level is thought to be a key indicator for lung cancer metastasis to the liver. Further, CA125 could be a useful biomarker in other cancer types diagnoses like ovarian, breast, and pancreatic cancers. One of the important limitations of CA125 as a first step in such a screening technique is that up to 20% of ovarian tumors lack antigen expression. Each of the 10 possible serum markers was expressed in 29-100% of ovarian tumors with minimal or no CA125 expression. Therefore, there is a controversy regarding CA125 in the diagnosis and prognosis of lung cancer and other cancer types. In this state, preclinical and clinical studies are warranted to elucidate the clinical benefit of CA125 in the diagnosis and prognosis of lung cancer.
Collapse
Affiliation(s)
- Hebatallah M. Saad
- Department of Pathology, Faculty of Veterinary Medicine, Matrouh University, Marsa Matruh 51744, Matrouh, Egypt
| | - Ghada F. Tourky
- Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt
| | - Hayder M. Al-kuraishy
- Department of Clinical Pharmacology, Internal Medicine, College of Medicine, Al-Mustansiriyiah University, Baghdad P.O. Box 14132, Iraq
| | - Ali I. Al-Gareeb
- Department of Clinical Pharmacology, Internal Medicine, College of Medicine, Al-Mustansiriyiah University, Baghdad P.O. Box 14132, Iraq
| | - Ahmed M. Khattab
- Pharmacy College, Al-Azhar University, Cairo 11884, Cairo, Egypt
| | - Sohaila A. Elmasry
- Faculty of Science, Damanhour University, Damanhour 22511, AlBeheira, Egypt
| | - Abdulrahman A. Alsayegh
- Clinical Nutrition Department, Applied Medical Sciences College, Jazan University, Jazan 82817, Saudi Arabia
| | - Zaki H. Hakami
- Medical Laboratory Technology Department, College of Applied Medical Sciences, Jazan University, MS, CT (ASCP), PhD, Jazan 45142, Saudi Arabia
| | - Ahmad Alsulimani
- Medical Laboratory Technology Department, College of Applied Medical Sciences, Jazan University, MS, CT (ASCP), PhD, Jazan 45142, Saudi Arabia
| | - Jean-Marc Sabatier
- Aix-Marseille Université, Institut de Neurophysiopathologie (INP), CNRS UMR 7051, Faculté des Sciences Médicales et Paramédicales, 27 Bd Jean Moulin, 13005 Marseille, France
| | - Marwa W. Eid
- Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt
| | - Hazem M. Shaheen
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt
| | - Ali A. Mohammed
- Consultant Respiratory & General Physician, The Chest Clinic, Barts Health NHS Trust Whipps Cross University Hospital, London E11 1NR, UK
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt
| | - Michel De Waard
- Smartox Biotechnology, 6 rue des Platanes, 38120 Saint-Egrève, France
- L’institut du Thorax, INSERM, CNRS, UNIV NANTES, 44007 Nantes, France
- Université de Nice Sophia-Antipolis, LabEx «Ion Channels, Science & Therapeutics», 06560 Valbonne, France
| |
Collapse
|
6
|
Christensen GM, Rowcliffe C, Chen J, Vanker A, Koen N, Jones MJ, Gladish N, Hoffman N, Donald KA, Wedderburn CJ, Kobor MS, Zar HJ, Stein DJ, Hüls A. In-utero exposure to indoor air pollution or tobacco smoke and cognitive development in a South African birth cohort study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 834:155394. [PMID: 35460774 PMCID: PMC9177804 DOI: 10.1016/j.scitotenv.2022.155394] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/15/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND AND AIMS There is increasing evidence indicating that air pollution exposure is associated with neuronal damage. Since pregnancy is a critical window of vulnerability, air pollution exposure during this period could have adverse effects on neurodevelopment. This study aims 1) to analyze associations of prenatal exposure to indoor air pollution (particulate matter with diameters ≤10 μm, PM10) and tobacco smoke with neurodevelopment and 2) to determine whether these associations are mediated by deviations of epigenetic gestational age from chronological gestational age (ΔGA). METHODS Data of 734 children from the South African Drakenstein Child Health Study were analyzed. Prenatal PM10 exposure was measured using devices placed in the families' homes. Maternal smoking during pregnancy was determined by maternal urine cotinine measures. The Bayley Scales of Infant and Toddler Development III (BSID-III) was used to measure cognition, language and motor development and adaptive behavior at two years of age. Linear regression models adjusted for maternal age, gestational age, sex of child, ancestry, birth weight/length, and socioeconomic status were used to explore associations between air pollutants and BSID-III scores. A mediation analysis was conducted to analyze if these associations were mediated by ΔGA using DNA methylation measurements from cord blood. RESULTS An increase of one interquartile range in natural-log transformed PM10 (lnPM10; 1.58 μg/m3) was significantly associated with lower composite scores in cognition, language, and adaptive behavior sub-scores (composite score β-estimate [95%-confidence interval]: -0.950 [-1.821, -0.120]). Maternal smoking was significantly associated with lower adaptive behavior scores (-3.386 [-5.632, -1.139]). Associations were not significantly mediated by ΔGA (e.g., for PM10 and cognition, proportion mediated [p-value]: 4% [0.52]). CONCLUSION We found an association of prenatal exposure to indoor air pollution (PM10) and tobacco smoke on neurodevelopment at two years of age, particularly cognition, language, and adaptive behavior. Further research is needed to understand underlying biological mediators.
Collapse
Affiliation(s)
- Grace M Christensen
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Claire Rowcliffe
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Junyu Chen
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Aneesa Vanker
- Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, University of Cape Town, South Africa
| | - Nastassja Koen
- Neuroscience Institute, University of Cape Town, Cape Town, South Africa; Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa; South African Medical Research Council (SAMRC) Unit on Risk and Resilience in Mental Disorders, University of Cape Town, Cape Town, South Africa
| | - Meaghan J Jones
- Department of Biochemistry and Medical Genetics, University of Manitoba, Children's Hospital Research, Institute of Manitoba, Winnipeg, Canada
| | - Nicole Gladish
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada; BC Children's Hospital Research Institute, Vancouver, BC, Canada; Centre for Molecular Medicine and Therapeutics, Vancouver, BC, Canada
| | - Nadia Hoffman
- Neuroscience Institute, University of Cape Town, Cape Town, South Africa; Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
| | - Kirsten A Donald
- Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, University of Cape Town, South Africa; Neuroscience Institute, University of Cape Town, Cape Town, South Africa
| | - Catherine J Wedderburn
- Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, University of Cape Town, South Africa; Neuroscience Institute, University of Cape Town, Cape Town, South Africa; Department of Clinical Research, London School of Hygiene & Tropical Medicine, London, UK
| | - Michael S Kobor
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada; BC Children's Hospital Research Institute, Vancouver, BC, Canada; Centre for Molecular Medicine and Therapeutics, Vancouver, BC, Canada
| | - Heather J Zar
- Department of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, University of Cape Town, South Africa; South African Medical Research Council (SAMRC) Unit on Risk and Resilience in Mental Disorders, University of Cape Town, Cape Town, South Africa
| | - Dan J Stein
- Neuroscience Institute, University of Cape Town, Cape Town, South Africa; Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa; South African Medical Research Council (SAMRC) Unit on Risk and Resilience in Mental Disorders, University of Cape Town, Cape Town, South Africa
| | - Anke Hüls
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA; Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, USA.
| |
Collapse
|
7
|
Association between smoking and environmental tobacco smoke with lung cancer risk: a case–control study in the Fujian Chinese population. J Public Health (Oxf) 2022. [DOI: 10.1007/s10389-021-01573-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
8
|
Xue Y, Wang L, Zhang Y, Zhao Y, Liu Y. Air pollution: A culprit of lung cancer. JOURNAL OF HAZARDOUS MATERIALS 2022; 434:128937. [PMID: 35452993 DOI: 10.1016/j.jhazmat.2022.128937] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/30/2022] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
Air pollution is a global health problem, especially in the context of rapid economic development and the expansion of urbanization. Herein, we discuss the harmful effects of outdoor and indoor pollution on the lungs. Ambient particulate matters (PMs) from industrial and vehicle exhausts is associated with lung cancer. Workers exposed to asbestos, polycyclic aromatic hydrocarbons (PAHs), and toxic metals are also likely to develop lung cancer. Indoors, cooking fumes, second-hand smoke, and radioactive products from house decoration materials play roles in the development of lung cancer. Bacteria and viruses can also be detrimental to health and are important risk factors in lung inflammation and cancer. Specific effects of lung cancer caused by air pollution are discussed in detail, including inflammation, DNA damage, and epigenetic regulation. In addition, advanced materials for personal protection, as well as the current government policies to prevent air pollution, are summarized. This review provides a basis for future research on the relationship between lung cancer and air pollution.
Collapse
Affiliation(s)
- Yueguang Xue
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nano safety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, PR China; Henan Institute of advanced technology, Zhengzhou University, Zhengzhou 450052, PR China
| | - Liuxiang Wang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nano safety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, PR China; Henan Institute of advanced technology, Zhengzhou University, Zhengzhou 450052, PR China
| | - Yiming Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nano safety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, PR China; Henan Institute of advanced technology, Zhengzhou University, Zhengzhou 450052, PR China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nano safety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, PR China; GBA National Institute for Nanotechnology Innovation, Guangzhou, Guangdong 510700, PR China.
| | - Ying Liu
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, PR China; CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nano safety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, PR China; GBA National Institute for Nanotechnology Innovation, Guangzhou, Guangdong 510700, PR China.
| |
Collapse
|
9
|
Deng B, Wang Y, Huang H, Duan X, Liu A. Effects of inhalation frequency on inhalation/exposure dose of hazardous nanoparticles and toxic gases during cigarette smoking. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 240:113709. [PMID: 35653970 DOI: 10.1016/j.ecoenv.2022.113709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/12/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
In this study, we measured the pollutants generations during cigarette smoking under various inhalation frequency experiment scenarios by a self-developed smoking machine. Some concepts, the effective inhaled amount and exposure amount were proposed to quantitatively estimate emission rates. Important findings include: For interval 1 s, 2 s, 3 s, 4 s and 9 s (called from 1 s to 9 s herein), effective inhaled nano-scale PN (particle number) per cigarette was 8.43E+09 #, 7.24E+09 #, 5.74E+ 09 #, 3.82E+09 # and 1.15E+09 #, it decreased linearly with interval time; exposure amount of PN in side stream smoke was 1.06E+10 #, 1.2E+10 #, 1.48E+10 #, 1.84E+10 # and 8.74E+10 #, it increased with interval time. For toxic gases, all pollutants decreased with interval time in main stream smoke. In side stream smoke, NOx and CO firstly increased with interval time and then decreased (with the highest value at 3 s interval time), while HC always increased with interval time. So, this study is useful to understand the relationship between pollution and smoking habit.
Collapse
Affiliation(s)
- Banglin Deng
- College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yiwen Wang
- The Second Xiangya Hospital, Central South University, Changsha 410011, China.
| | - Haiyan Huang
- Innovation and Entrepreneurship Institute, Guangdong Polytechnic Normal University, Guangzhou 510665, China
| | - Xiongbo Duan
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China
| | - Aodong Liu
- College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China
| |
Collapse
|
10
|
Chang PK, Griffith SM, Chuang HC, Chuang KJ, Wang YH, Chang KE, Hsiao TC. Particulate matter in a motorcycle-dominated urban area: Source apportionment and cancer risk of lung deposited surface area (LDSA) concentrations. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:128188. [PMID: 35007803 DOI: 10.1016/j.jhazmat.2021.128188] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/24/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
Source-apportioned particle concentrations are necessary to properly evaluate the health impacts of air pollution. In this study, a measurement station was established at an urban roadside in northern Taiwan to the investigate lung deposited surface area (LDSA) concentration, a relevant metric for the adverse health effects of aerosol exposure, along with PM1 and equivalent black carbon (eBC) concentrations, particle number concentration (PNC), and particle size distribution (PSD). Through positive matrix factorization and multi-linear regression analysis, we attributed 57% of LDSA to traffic emissions over the entire study. During rush hour, the motorcycle fraction increased to 0.83 and LDSA (77.6 ± 9.9 µm2/cm3) and PNC (14,000 ± 2400 particles/cm3) values peaked, while 74% of LDSA was attributed to traffic. The LDSA ratio, defined as the ratio of measured LDSA to that estimated from the particle size distribution with a spherical assumption, also increased, highlighting the greater degree of fractal morphology during rush hour. The relationship between LDSA emitted by traffic and PNC yielded a higher r2 (0.92) than the r2 between traffic LDSA and eBC (0.82). Finally, the excess lifetime cancer risk linked with traffic emission was 1.56 × 10-4 (i.e. 15.6 excess cancer cases for a population of 100,000 people) based on the LDSA apportionment results.
Collapse
Affiliation(s)
- Po-Kai Chang
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei 10617, Taiwan
| | - Stephen M Griffith
- Department of Atmospheric Sciences, National Central University, Taoyuan, Taiwan
| | - Hsiao-Chi Chuang
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Kai-Jen Chuang
- Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yu-Hui Wang
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei 10617, Taiwan
| | - Kuo-En Chang
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei 10617, Taiwan
| | - Ta-Chih Hsiao
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei 10617, Taiwan.
| |
Collapse
|
11
|
Collaco JM, McGrath-Morrow SA. Developmental Effects of Electronic Cigarette Use. Compr Physiol 2022; 12:3337-3346. [PMID: 35578965 DOI: 10.1002/cphy.c210018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Electronic cigarettes have gained widespread acceptance among adolescents and young adults. As a result of this popularity, there are concerns regarding the potential harm of primary, secondhand and thirdhand electronic cigarette exposures on fetal and postnatal development. In vitro studies have shown that constituents in electronic cigarette liquids, including nicotine, flavorings, and carrier agents can alter cellular processes and growth. Additionally, aerosolized electronic cigarette emissions have been shown to disrupt organ development and immune responses in preclinical studies. In clinical studies, an association between electronic cigarette use and frequent respiratory symptoms, greater asthma severity and impaired mucociliary clearance has been demonstrated with adolescent and young adult users of electronic cigarettes having twice the frequency of cough, mucus production, or bronchitis compared to nonusers. Along with the popularity of electronic cigarette use, secondhand electronic cigarette exposure has increased substantially; with almost one-fourth of middle and high school children reporting exposure to secondhand vapors. The health consequences of secondhand electronic cigarette exposure on children and other vulnerable populations are poorly understood but detectable levels of cotinine have been measured in nonusers. Pregnant women and their offspring are another vulnerable group at increased risk for health consequences from electronic cigarette exposure. Nicotine crosses the placenta and can disrupt brain and lung development in preclinical studies. This article will focus on the physiological and health effects associated with primary or secondhand exposure to electronic cigarettes. It is expected that with ongoing availability of electronic cigarettes as well as the accumulation of additional follow-up time for long-term outcomes, the risks associated with exposure will become better clarified. © 2022 American Physiological Society. Compr Physiol 12:3337-3346, 2022.
Collapse
Affiliation(s)
- Joseph M Collaco
- Eudowood Division of Pediatric Respiratory Sciences, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Sharon A McGrath-Morrow
- Division of Pediatric Pulmonology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| |
Collapse
|
12
|
Alsagaby S, Ahmed AA, Rasheed Z, Althwab SA, Aljohani ASM, Alhumaydhi FA, Alhomaidan HT, Alkhamiss AS, Alkhowailed M, Alaqeel A, Alblihed MA, Alrehaili J, Fernández N, Abdulmonem WA. Association of genetic polymorphisms in DNA repair genes ERCC2 Asp312Asn (rs1799793), ERCC2 Lys 751 Gln (rs13181), XRCC1 Arg399 Gln (rs25487) and XRCC3 Thr 241Met (rs861539) with the susceptibility of lung cancer in Saudi population. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2022; 41:530-554. [PMID: 35319340 DOI: 10.1080/15257770.2022.2052317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 03/07/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
This study demonstrated the association of polymorphisms in ERCC2 (Asp312Asn) rs1799793, ERCC2 (Lys751Gln) rs13181, XRCC1 (Arg399Gln) rs25487 and XRCC3(Thr241Met) rs861539 polymorphisms with a susceptibility of lung cancer (LC) onset in the Saudi population. The study was performed on 134 LC patients and 270 controls. The data revealed that there was no significant association of LC with subtype squamous cell carcinoma (SCC), small cell lung cancer (SCLC) and adenocarcinoma with the ERCC2 rs1799793 polymorphism. The data showed that the CC genotype for ERCC2 rs13181, the AA genotype for XRCC1 rs25487, and the genotype TT for XRCC3 rs861539 were significantly associated with SCC susceptibility (p < 0.05). Similarly, the CC genotype for ERCC2 rs13181 and the AA genotype for XRCC1 rs25487 were significantly associated with adenocarcinoma susceptibility (p < 0.05). Whereas, the TT genotype for XRCC3 rs861539 was significantly associated with SCLC susceptibility (p = 0.005). In total, significant association of LC susceptibility was found in the following combination models of recessive genotypes: AC heterozygous for ERCC2 rs13181 + AA homozygous for XRCC1 rs25487, CC homozygous for ERCC2 rs13181 + GA heterozygous for rs25487, CC homozygous for rs13181 + AA homozygous for XRCC1 rs25487, CC homozygous for ERCC2 rs13181 + TT homozygous for XRCC3 rs861539, GA heterozygous for XRCC1 rs25487 + CT heterozygous for XRCC3 rs861539, GA heterozygous for XRCC1 rs25487 + TT homozygous for XRCC3 rs861539, AA homozygous for XRCC1 rs25487 + CT heterozygous for XRCC3 rs861539, AA homozygous for XRCC1 rs25487+ TT homozygous for XRCC3 rs861539. These data clearly demonstrated that the combination of recessive genotypes may be associated with susceptibility of LC onset (p < 0.05). In short, the data indicated that DNA repair genes increase LC risk via gene-gene interaction rather than independent variants.
Collapse
Affiliation(s)
- Suliman Alsagaby
- Department of Medical Laboratories Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah, Saudi Arabia
| | - Ahmed A Ahmed
- Research Center, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Zafar Rasheed
- Department of Medical Biochemistry, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Sami A Althwab
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Abdullah S M Aljohani
- Department of Veterinary Medicine, College of Agricultural and Veterinary Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Fahad A Alhumaydhi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah, Saudi Arabia
| | - Homaidan T Alhomaidan
- Department of Family and Community Medicine, College of Medicine, Qassim University, Qassim, Saudi Arabia
| | - Abdullah S Alkhamiss
- Department of Pathology, College of Medicine, Qassim University, Qassim, Saudi Arabia
| | - Mohammad Alkhowailed
- Department of Dermatology, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Aqeel Alaqeel
- Department of Pediatrics, College of Medicine, Qassim University, Buraidah, Saudi Arabia
| | - Mohamd A Alblihed
- Department of Medical Microbiology, School of Medicine, Taif University, Taif, Saudi Arabia
| | - Jihad Alrehaili
- Pathology Department, Imam Mohammad Ibn Saud University, Riyadh, Saudi Arabia
| | | | - Waleed Al Abdulmonem
- Department of Pathology, College of Medicine, Qassim University, Qassim, Saudi Arabia
| |
Collapse
|
13
|
Gu Q, Chen F, Chen N, Wang J, Li Z, Deng X. Effect of EGCG on bronchial epithelial cell premalignant lesions induced by cigarette smoke and on its CYP1A1 expression. Int J Mol Med 2021; 48:220. [PMID: 34676878 PMCID: PMC8559702 DOI: 10.3892/ijmm.2021.5053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 07/30/2021] [Indexed: 01/10/2023] Open
Abstract
Epigallocatechin-3-gallate (EGCG) has been demonstrated to exhibit anticancer effects; however, the mechanisms behind these are not yet clear. The objective of the present study was to assess the effect of EGCG on smoking-induced, precancerous, bronchial epithelial cell lesions and determine a potential protective mechanism. Human bronchial epithelial (HBE) cells were treated with cigarette smoke extract (CSE). Benzopyrene-DNA adducts were detected by immunofluorescence cytochemistry. Changes to microRNA (miRNA) expression levels were detected via microarray. The effects of EGCG on smoke-induced benzopyrene-DNA adduct formation and the subsequent change in miRNA expression were analyzed. Subsequently, the protective effect of EGCG on smoke inhalation-induced precancerous lesions was investigated. The expression levels of miRNA target genes were also analyzed. After CSE treatment, benzopyrene-DNA adducts appeared in HBE cells, along with a resultant change in miRNA expression. EGCG inhibited the effects of CSE exposure; benzopyrene-DNA adduct formation was reduced and miRNA expression changes were suppressed. In vivo, EGCG significantly reduced benzopyrene-DNA adduct formation and the subsequent development of precancerous lesions in rat lungs induced by cigarette smoke inhalation. Moreover, EGCG downregulated CYP1A1 overexpression, a target gene of multiple smoking-induced miRNAs, in rat lungs. EGCG may reduce the risk of lung cancer by downregulating the expression of the key gene CYP1A1, preventing the formation of smoking-induced benzopyrene-DNA adducts and alleviating smoking-induced bronchial epithelial dysplasia and heterogeneity.
Collapse
Affiliation(s)
- Qihua Gu
- Department of Respiratory Medicine, Xiangya Hospital Affiliated to Central South University, Changsha, Hunan 410008, P.R. China
| | - Fangmin Chen
- Department of Respiratory Medicine, Xiangya Hospital Affiliated to Central South University, Changsha, Hunan 410008, P.R. China
| | - Ni Chen
- Department of Respiratory Medicine, Xiangya Hospital Affiliated to Central South University, Changsha, Hunan 410008, P.R. China
| | - Jing Wang
- Department of Pathology, Xiangya Hospital Affiliated to Central South University, Changsha, Hunan 410008, P.R. China
| | - Zhao Li
- Department of Respiratory Medicine, Xiangya Hospital Affiliated to Central South University, Changsha, Hunan 410008, P.R. China
| | - Xinhao Deng
- Department of Respiratory Medicine, Xiangya Hospital Affiliated to Central South University, Changsha, Hunan 410008, P.R. China
| |
Collapse
|
14
|
A novel regQTL-SNP and the risk of lung cancer: a multi-dimensional study. Arch Toxicol 2021; 95:3815-3827. [PMID: 34596730 DOI: 10.1007/s00204-021-03170-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 09/23/2021] [Indexed: 01/15/2023]
Abstract
RegQTL, a novel concept, indicates that different genotypes of some SNPs have differential effects on the expression patterns of miRNAs and their target mRNAs. We aimed to identify the association between regQTL-SNPs and lung cancer risk and to explore the underlying mechanisms. The two-stage case-control study included the first stage in a Chinese population (626 lung cancer cases and 667 healthy controls) and the second stage in a European population (18,082 lung cancer cases and 13,780 healthy controls). Functional annotations were conducted based on the GTEx and the TCGA databases. Functional experiments were performed to explore the underlying biological mechanisms in vitro and vivo. After strict screening, five candidate regQTL-SNPs (rs7110737, rs273957, rs6593210, rs3768617, and rs6836432) were selected. Among them, the variant T allele of rs3768617 in LAMC1 was found to significantly increase the risk of lung cancer (first stage: P = 0.044; second stage: P = 0.007). The eQTL analysis showed that LAMC1 expression level was significantly higher in subjects with the variant T allele of rs3768617 (P = 1.10 × 10-14). In TCGA paired database, the regQTL annotation indicated the different expression patterns between LAMC1 and miRNA-548b-3p for the distinct genotypes of rs3768617. Additionally, LAMC1 knockdown significantly inhibited malignant phenotypes in lung cancer cell lines and suppressed tumor growth. A novel regQTL-SNP, rs3768617, might affect lung cancer risk by modulating the expression patterns of miRNA-548b-3p and LAMC1. RegQTL-SNPs could provide a new perspective for evaluating the regulatory function of SNPs in lung cancer development.
Collapse
|
15
|
Hou K, Deng B, Liu A, Ran J. Measurement of harmful nanoparticle distribution among filters, smokers' respiratory systems, and surrounding air during cigarette smoking. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2021; 56:1058-1068. [PMID: 34353208 DOI: 10.1080/10934529.2021.1962158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 07/22/2021] [Accepted: 07/22/2021] [Indexed: 06/13/2023]
Abstract
This study was undertaken to investigate the filtration effect of filter on nanoparticle and the deposition behavior of nanoparticle in the human respiratory system from the aspect of nanoparticle number during cigarette smoking. For that, two kinds of experiments were designed. One is machine experiment, a well-controlled simulated respiratory system was designed to measure the raw emission and filter effect. Another is human experiment, volunteers were asked to inhale smoke into the oral cavity only and lungs, respectively, to distinguish smoke path. Results revealed that effective inhaled nanoparticle amount of a Taishan and a Hongtaishan cigarette were 5.8E + 9 (#) and 9.4E + 7 (#), respectively. The filter's integrated reduction rate was 41.65% for nanoparticle. For Taishan cigarette, 35.4% and 41.7% of raw emitted nanoparticles were deposited in the oral cavity and lungs, respectively, the rest of 22.9% was exhaled to surrounding air. The corresponding values were 25.6%, 41.5% and 32.9%, respectively, for Hongtaishan. The current findings are expected to provide basic assessments of filter effect and harm to human and to be a warning for smokers.
Collapse
Affiliation(s)
- Kaihong Hou
- College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, China
| | - Banglin Deng
- College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, China
| | - Aodong Liu
- College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, China
| | - Jiaqi Ran
- College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, China
| |
Collapse
|
16
|
Blount RJ, Phan H, Trinh T, Dang H, Merrifield C, Zavala M, Zabner J, Comellas AP, Stapleton EM, Segal MR, Balmes J, Nhung NV, Nahid P. Indoor Air Pollution and Susceptibility to Tuberculosis Infection in Urban Vietnamese Children. Am J Respir Crit Care Med 2021; 204:1211-1221. [PMID: 34343025 DOI: 10.1164/rccm.202101-0136oc] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE The Southeast Asian tuberculosis burden is high, and it remains unclear if urban indoor air pollution in this setting is exacerbating the epidemic. OBJECTIVES To determine the associations of latent tuberculosis with common urban indoor air pollution sources (secondhand smoke, indoor motorcycle emissions, and cooking) in Southeast Asia. METHODS We enrolled child household contacts of patients with microbiologically confirmed active tuberculosis in Vietnam, July 2017-December 2019. We tested children for latent tuberculosis and evaluated air pollution exposures with questionnaires and personal aerosol sampling. We tested hypotheses using generalized estimating equations. MEASUREMENTS AND MAIN RESULTS We enrolled 72 tuberculosis patients (27% with cavitary disease) and 109 of their child household contacts. Of household contacts, 58 (53%) were diagnosed with latent tuberculosis at baseline visit. Children experienced a 2.56-fold increased odds of latent tuberculosis for each additional household member who smoked (95%CI 1.27-5.16). Odds were highest among children exposed to indoor smokers and children under five years old exposed to household smokers. Each residential floor above street-level pollution decreased the odds of latent tuberculosis by 36% (aOR 0.64, 95%CI 0.42-0.96). Motorcycles parked inside children's homes and cooking with liquid petroleum gas compared to electricity increased the odds of latent tuberculosis while kitchen ventilation decreased the effect, but these findings were not statistically significant. CONCLUSION Common urban indoor air pollution sources were associated with increased odds of latent tuberculosis infection in child household contacts of active tuberculosis patients.
Collapse
Affiliation(s)
- Robert J Blount
- UI Carver College of Medicine, 12243, Pulmonary and Critical Care Medicine, Iowa City, Iowa, United States;
| | - Ha Phan
- Vietnam National Tuberculosis Program - University of California San Francisco Research Collaboration Unit, Hanoi, Viet Nam.,Center for Promotion of Advancement of Society, Vietnam, Hanoi, Viet Nam
| | - Trang Trinh
- Vietnam National Tuberculosis Program - University of California San Francisco Research Collaboration Unit, Hanoi, Viet Nam.,Center for Promotion of Advancement of Society, Vietnam, Hanoi, Viet Nam
| | - Hai Dang
- Vietnam National Tuberculosis Program - University of California San Francisco Research Collaboration Unit, Hanoi, Viet Nam.,Center for Promotion of Advancement of Society, Vietnam, Hanoi, Viet Nam
| | - Cindy Merrifield
- University of California San Francisco, 8785, Pulmonary and Critical Care Medicine, San Francisco, California, United States.,University of California San Francisco, 8785, Center for Tuberculosis, San Francisco, California, United States.,Vietnam National Tuberculosis Program - University of California San Francisco Research Collaboration Unit, San Francisco, California, United States
| | - Michael Zavala
- UI Carver College of Medicine, 12243, Pulmonary and Critical Care Medicine, Iowa City, Iowa, United States
| | - Joseph Zabner
- UI Carver College of Medicine, 12243, Pulmonary and Critical Care Medicine, Iowa City, Iowa, United States
| | - Alejandro P Comellas
- University of Iowa, 4083, Pulmonary and Critical Care Medicine, Iowa City, Iowa, United States
| | - Emma M Stapleton
- UI Carver College of Medicine, 12243, Iowa City, Iowa, United States
| | - Mark R Segal
- University of California San Francisco, 8785, Department of Epidemiology and Biostatistics, San Francisco, California, United States
| | - John Balmes
- University of California, Berkeley, Environmental Health Sciences, School of Public Health, Berkeley, California, United States.,University of California, San Francisco, Department of Medicine, San Francisco, California, United States
| | - Nguyen Viet Nhung
- Vietnam National Tuberculosis Program - University of California San Francisco Research Collaboration Unit, Hanoi, Viet Nam.,Vietnam National Tuberculosis Program, Hanoi, Viet Nam
| | - Payam Nahid
- University of California San Francisco, 8785, Pulmonary and Critical Care Medicine, San Francisco, California, United States.,University of California San Francisco, 8785, Center for Turberculosis, San Francisco, California, United States.,Vietnam National Tuberculosis Program - University of California San Francisco Research Collaboration Unit, San Francisco, United States
| |
Collapse
|
17
|
Chen J, Yi C, Lu C, Han J, Shi Q, Li J, Zhou J, Su X. High DHA tuna oil alleviated cigarette smoking exposure induced lung inflammation via the regulation of gut microbiota and serum metabolites. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
18
|
Use of Electronic Nicotine Delivery Systems (ENDS) in Colombia. ADDICTIVE DISORDERS & THEIR TREATMENT 2021. [DOI: 10.1097/adt.0000000000000274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
19
|
Toxicology of flavoring- and cannabis-containing e-liquids used in electronic delivery systems. Pharmacol Ther 2021; 224:107838. [PMID: 33746051 DOI: 10.1016/j.pharmthera.2021.107838] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/11/2021] [Indexed: 12/15/2022]
Abstract
Electronic cigarettes (e-cigarettes) were introduced in the United States in 2007 and by 2014 they were the most popular tobacco product amongst youth and had overtaken use of regular tobacco cigarettes. E-cigarettes are used to aerosolize a liquid (e-liquid) that the user inhales. Flavorings in e-liquids is a primary reason for youth to initiate use of e-cigarettes. Evidence is growing in the scientific literature that inhalation of some flavorings is not without risk of harm. In this review, 67 original articles (primarily cellular in vitro) on the toxicity of flavored e-liquids were identified in the PubMed and Scopus databases and evaluated critically. At least 65 individual flavoring ingredients in e-liquids or aerosols from e-cigarettes induced toxicity in the respiratory tract, cardiovascular and circulatory systems, skeletal system, and skin. Cinnamaldehyde was most frequently reported to be cytotoxic, followed by vanillin, menthol, ethyl maltol, ethyl vanillin, benzaldehyde and linalool. Additionally, modern e-cigarettes can be modified to aerosolize cannabis as dried plant material or a concentrated extract. The U.S. experienced an outbreak of lung injuries, termed e-cigarette, or vaping, product use-associated lung injury (EVALI) that began in 2019; among 2,022 hospitalized patients who had data on substance use (as of January 14, 2020), 82% reported using a delta-9-tetrahydrocannabinol (main psychoactive component in cannabis) containing e-cigarette, or vaping, product. Our literature search identified 33 articles related to EVALI. Vitamin E acetate, a diluent and thickening agent in cannabis-based products, was strongly linked to the EVALI outbreak in epidemiologic and laboratory studies; however, e-liquid chemistry is highly complex, and more than one mechanism of lung injury, ingredient, or thermal breakdown product may be responsible for toxicity. More research is needed, particularly with regard to e-cigarettes (generation, power settings, etc.), e-liquids (composition, bulk or vaped form), modeled systems (cell type, culture type, and dosimetry metrics), biological monitoring, secondhand exposures and contact with residues that contain nicotine and flavorings, and causative agents and mechanisms of EVALI toxicity.
Collapse
|
20
|
Stabile L, De Luca G, Pacitto A, Morawska L, Avino P, Buonanno G. Ultrafine particle emission from floor cleaning products. INDOOR AIR 2021; 31:63-73. [PMID: 32638396 DOI: 10.1111/ina.12713] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/23/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
The new particle formation due to the use of cleaning products containing volatile organic compounds (VOCs) in indoor environments is well documented in the scientific literature. Indeed, the physical-chemical process occurring in particle nucleation due to VOC-ozone reactions was deepened as well as the effect of the main influencing parameters (ie, temperature, ozone). Nonetheless, proper quantification of the emission under actual meteo-climatic conditions and ozone concentrations is not available. To this end, in the present paper the emission factors of newly generated ultrafine particles due to the use of different floor cleaning products under actual temperature and relative humidity conditions and ozone concentrations typical of the summer periods were evaluated. Tests in a chamber and in an actual indoor environment were performed measuring continuously particle number concentrations and size distributions during cleaning activities. The tests revealed that a significant particle emission in the nucleation mode was present for half of the products under investigation with emission factors up to 1.1 × 1011 part./m2 (8.8 × 1010 part./mLproduct ), then leading to an overall particle emission comparable to other well-known indoor sources when cleaning wide surfaces.
Collapse
Affiliation(s)
- Luca Stabile
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, FR, Italy
| | - Gianmarco De Luca
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, FR, Italy
| | - Antonio Pacitto
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, FR, Italy
| | - Lidia Morawska
- International Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, Qld, Australia
| | | | - Giorgio Buonanno
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, FR, Italy
- International Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, Qld, Australia
| |
Collapse
|
21
|
Famiglietti A, Memoli JW, Khaitan PG. Are electronic cigarettes and vaping effective tools for smoking cessation? Limited evidence on surgical outcomes: a narrative review. J Thorac Dis 2021; 13:384-395. [PMID: 33569219 PMCID: PMC7867832 DOI: 10.21037/jtd-20-2529] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The rising popularity of e-cigarettes and vaping, particularly in youth populations, has prompted the scientific community to ocassionally recommend their use as alternative to smoking or as a modality for smoking cessation. Media also tends to portray them as stylish, smoking cessation tools. We first studied the current literature to better understand whether they are viable options for surgeons to use prior to surgery as part of their armamentarium and their efficacy in attaining smoking abstinence. Next, we performed a comprehensive review of the literature to study the impact of e-cigarette and vaping on lung pathophysiology, surgical outcomes, and postoperative complications. After a thorough search, we found limited evidence suggesting that e-cigarettes and vaping are effective smoking cessation tools, and indeed may increase the propensity of dual smoking, contrary to e-cigarette advertisements. Many potential biases and limitations exist due to self-reporting when investigating e-cigarettes and vaping. While there is controversial data in the literature about e-cigarettes and vaping not leading to lung cancer, there are chemicals in these products that compromise lung hemostasis, negatively affect the immune system, and have detrimental inflammatory effects on wound healing. Studies are warranted to elucidate objective data regarding short and long-term effects of these products on surgical outcomes, and given the current data, they should not be utilized as viable smoking cessation tools.
Collapse
Affiliation(s)
- Amber Famiglietti
- Department of Surgery, Georgetown University School of Medicine, MedStar Washington Hospital Center, Washington, D.C., USA
| | - Jessica Wang Memoli
- Division of Interventional Pulmonology, Georgetown University School of Medicine, MedStar Washington Hospital Center, Washington, D.C., USA
| | - Puja Gaur Khaitan
- Department of Surgery, Georgetown University School of Medicine, MedStar Washington Hospital Center, Washington, D.C., USA
- Division of Thoracic and Esophageal Surgery, Georgetown University School of Medicine, MedStar Washington Hospital Center, Washington, D.C., USA
| |
Collapse
|
22
|
Scungio M, Rizza V, Stabile L, Morawska L, Buonanno G. Influence of methodology on the estimation of the particle surface area dose received by a population in all-day activities. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115209. [PMID: 32688075 DOI: 10.1016/j.envpol.2020.115209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 07/06/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
In everyday life, people are exposed to different concentrations of airborne particles depending on the microenvironment where they perform their different activities. Such exposure can lead to high sub-micron particle doses. The received dose depends on particle concentration to which people are exposed (typically expressed in terms of number or surface area), time spent in each activity or microenvironment (time activity pattern) and amount of air inhaled (inhalation rate). To estimate an actual value of the received dose, all these parameters should be measured under real-life conditions; in fact, the concentrations should be measured on a personal scale (i.e. through a direct exposure assessment), whereas time activity patterns and inhalation rates specific to the activity performed should be considered. The difficulties in obtaining direct measurements of these parameters usually lead to adopt time activity patterns and inhalation rates already available in scientific literature for typical populations, and local outdoor particle concentrations measured with fixed monitoring stations and extrapolated for all the other microenvironments. To overcome these limitations, we propose a full-field method for estimating the received dose of a population sample, in which all the parameters (concentration levels, time activity patterns and inhalation rates) are measured under real-life conditions (also including the inhalation rates, that were evaluated on the basis of the measured heart rates). Specifically, 34 volunteers were continuously monitored for seven days and the data of sub-micron particle concentrations, activities performed, and inhalation rates were recorded. The received dose was calculated with the proposed method and compared with those obtained from different simplified methodologies that consider typical data of particle concentrations, time activity patterns and inhalation rates obtained from literature. The results show that, depending on the methodology used, the differences in the received daily dose can be significant, with a general underestimation of the most simplified method.
Collapse
Affiliation(s)
- Mauro Scungio
- School of Engineering, University of Tuscia, Viterbo, Italy.
| | - Valeria Rizza
- Institute of Atmospheric Pollution Research (IIA), CNR, Rome, Italy
| | - Luca Stabile
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, Italy
| | - Lidia Morawska
- Queensland University of Technology, Brisbane, Australia
| | - Giorgio Buonanno
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, Italy; Queensland University of Technology, Brisbane, Australia
| |
Collapse
|
23
|
Li D, Shi H, Xie Z, Rahman I, McIntosh S, Bansal-Travers M, Winickoff JP, Drehmer JE, Ossip DJ. Home smoking and vaping policies among US adults: results from the Population Assessment of Tobacco and Health (PATH) study, wave 3. Prev Med 2020; 139:106215. [PMID: 32693178 PMCID: PMC7494576 DOI: 10.1016/j.ypmed.2020.106215] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 06/28/2020] [Accepted: 07/13/2020] [Indexed: 11/26/2022]
Abstract
We examined the prevalence of home smoking and vaping restrictions among US adults, and compared home policy differences for smoking and vaping among vapers, smokers, and dual users. Secondary data from the Population Assessment of Tobacco and Health (PATH) Study Wave 3 (2015-2016) with 28,148 adults were analyzed using weighted multivariable logistic regression models that account for complex sampling design to compare differences in home policies among non-users, vapers only, smokers only, and dual users. Compared to never-users, current vapers who were ex-smokers and dual users were more likely to allow home vaping (aOR = 11.06, 95% CI: 8.04-15.21; aOR = 6.44, 95% CI: 5.01-8.28) and smoking (aOR = 1.62, 95% CI: 1.19-2.22; aOR = 3.58, 95% CI: 2.88-4.45). Current smokers were more likely to allow vaping (aOR = 3.53, 95% CI: 3.06-4.06) and smoking (aOR = 4.27, 95% CI: 3.73-4.89) inside the home than never-users. Current vapers who never smoked were more likely to allow vaping inside the home than never-users (aOR = 2.45, 95% CI: 1.53-3.93). Vapers reported much lower rates of vape-free home policies relative to both their smoke-free home policies and to vape-free home policies among smokers. Vapers may be using e-cigarettes in hopes of harm reduction, but interpreting "harm reduction" as safe, thus exposing non-users in their homes to second- and thirdhand aerosols. This underscores the need to healthcare providers to extend intervention with vapers to include implementing vape-free home policies.
Collapse
Affiliation(s)
- Dongmei Li
- Department of Clinical & Translational Research, University of Rochester Medical Center, Rochester, NY, USA.
| | - Hangchuan Shi
- Department of Clinical & Translational Research, University of Rochester Medical Center, Rochester, NY, USA
| | - Zidian Xie
- Department of Clinical & Translational Research, University of Rochester Medical Center, Rochester, NY, USA
| | - Irfan Rahman
- Department of Environmental Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Scott McIntosh
- Department of Public Health Sciences, University of Rochester Medical Center, 265 Crittenden Blvd, Rochester, NY, USA
| | - Maansi Bansal-Travers
- Department of Health Behavior, Roswell Park Comprehensive Cancer Center, Elm and Carlton Streets, Buffalo, NY, USA
| | - Jonathan P Winickoff
- Massachusetts General Hospital for Children, Division of General Academic Pediatrics, Boston, MA, USA; Tobacco Research and Treatment Center, Massachusetts General Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Jeremy E Drehmer
- Massachusetts General Hospital for Children, Division of General Academic Pediatrics, Boston, MA, USA; Tobacco Research and Treatment Center, Massachusetts General Hospital, Boston, MA, USA
| | - Deborah J Ossip
- Department of Public Health Sciences, University of Rochester Medical Center, 265 Crittenden Blvd, Rochester, NY, USA.
| |
Collapse
|
24
|
Passive Exposure to Pollutants from a New Generation of Cigarettes in Real Life Scenarios. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17103455. [PMID: 32429196 PMCID: PMC7277352 DOI: 10.3390/ijerph17103455] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/06/2020] [Accepted: 05/13/2020] [Indexed: 01/25/2023]
Abstract
The use of electronic cigarettes (e-cigarettes) and heat-not-burn tobacco (HNBT), as popular nicotine delivery systems (NDS), has increased among adult demographics. This study aims to assess the effects on indoor air quality of traditional tobacco cigarettes (TCs) and new smoking alternatives, to determine the differences between their potential impacts on human health. Measurements of particulate matter (PM1, PM2.5 and PM10), black carbon, carbon monoxide (CO) and carbon dioxide (CO2) were performed in two real life scenarios, in the home and in the car. The results indicated that the particle emissions from the different NDS devices were significantly different. In the home and car, the use of TCs resulted in higher PM10 and ultrafine particle concentrations than when e-cigarettes were smoked, while the lowest concentrations were associated with HNBT. As black carbon and CO are released by combustion processes, the concentrations of these two pollutants were significantly lower for e-cigarettes and HNBT because no combustion occurs when they are smoked. CO2 showed no increase directly associated with the NDS but a trend linked to a higher respiration rate connected with smoking. The results showed that although the levels of pollutants emitted by e-cigarettes and HNBT are substantially lower compared to those from TCs, the new smoking devices are still a source of indoor air pollutants.
Collapse
|
25
|
Indoor Air Quality: A Focus on the European Legislation and State-of-the-Art Research in Italy. ATMOSPHERE 2020. [DOI: 10.3390/atmos11040370] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The World Health Organization (WHO) has always stressed the importance of indoor air quality (IAQ) and the potential danger of pollutants emitted from indoor sources; thus, it has become one of the main determinants for health. In recent years, reference documents and guidelines have been produced on many pollutants in order to: i) decrease their impact on human health (as well as the number of pollutants present in indoor environments), and ii) regulate the relevant levels of chemicals that can be emitted from the various materials. The aim of this paper is to discuss and compare the different legislations present in the European Union (EU). Furthermore, a focus of this paper will be dedicated at Italian legislation, where there is currently no specific reference to IAQ. Although initiatives in the pre-regulatory sector have multiplied, a comprehensive and integrated policy on the issue is lacking. Pending framework law for indoor air quality, which takes into account WHO indications, the National Study Group (GdS) on Indoor Air Pollution by the Italian Institute of Health (IIS) is committed to providing shared technical-scientific documents in order to allow actions harmonized at a national level. An outlook of the main Italian papers published during these last five years will be reported and discussed.
Collapse
|
26
|
Pacitto A, Amato F, Moreno T, Pandolfi M, Fonseca A, Mazaheri M, Stabile L, Buonanno G, Querol X. Effect of ventilation strategies and air purifiers on the children's exposure to airborne particles and gaseous pollutants in school gyms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 712:135673. [PMID: 31810696 DOI: 10.1016/j.scitotenv.2019.135673] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/18/2019] [Accepted: 11/19/2019] [Indexed: 05/05/2023]
Abstract
Indoor school gyms are environments characterized by high concentrations of different airborne particulate and gaseous pollutants. In particular, like other naturally-ventilated school environments, in addition to indoor pollutants children can be exposed to sub-micron particles and gaseous pollutants emitted by outdoor sources and penetrating the building envelope; moreover, high concentrations of super-micron particles can be reached due to the resuspension phenomena related to the physical activity performed therein. The present paper aims to evaluate the effect of different ventilation methods (natural ventilation, manual airing) and the use of air purifiers in reducing the indoor concentrations of different airborne particles and gaseous pollutants in school gyms. To this end, an experimental campaign was performed in two naturally-ventilated school gyms in Barcelona (Spain) of different volumes and different distance to major urban roads. Indoor and outdoor measurements of particle number, black carbon and PM1-10 concentrations were performed as well as indoor measurements of CO2 and NO2 concentrations. The study revealed that the use of air purifiers with windows kept closed (natural ventilation) can lead to a significant reduction in terms of indoor-to-outdoor concentration ratios. In the smaller gym (air changes per hour of the purifiers, ACH, equal to 9.2 h-1) the I/O ratios were reduced by 93% and 95% in terms of particle number and PM1-10, respectively; whereas in the larger school gym (ACH = 1.7 h-1) the corresponding reductions were 70% and 84%. For manual airing scenarios, the effect of the air purifiers on outdoor-generated sub-micron particles is reduced; in particular, for low ACH values (i.e. ACH = 1.7 h-1), the reduction is quite negligible (6%).
Collapse
Affiliation(s)
- A Pacitto
- Institute of Environmental Assessment and Water Research (IDÆA), Spanish National Research Council (CSIC), Barcelona, Spain; Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, FR, Italy
| | - F Amato
- Institute of Environmental Assessment and Water Research (IDÆA), Spanish National Research Council (CSIC), Barcelona, Spain.
| | - T Moreno
- Institute of Environmental Assessment and Water Research (IDÆA), Spanish National Research Council (CSIC), Barcelona, Spain
| | - M Pandolfi
- Institute of Environmental Assessment and Water Research (IDÆA), Spanish National Research Council (CSIC), Barcelona, Spain
| | - A Fonseca
- Institute of Environmental Assessment and Water Research (IDÆA), Spanish National Research Council (CSIC), Barcelona, Spain
| | - M Mazaheri
- Institute of Environmental Assessment and Water Research (IDÆA), Spanish National Research Council (CSIC), Barcelona, Spain; International Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, Australia
| | - L Stabile
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, FR, Italy
| | - G Buonanno
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, FR, Italy; International Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, Australia
| | - X Querol
- Institute of Environmental Assessment and Water Research (IDÆA), Spanish National Research Council (CSIC), Barcelona, Spain
| |
Collapse
|
27
|
Wawryk-Gawda E, Chylińska-Wrzos P, K Zarobkiewicz M, Chłapek K, Jodłowska-Jędrych B. Lung histomorphological alterations in rats exposed to cigarette smoke and electronic cigarette vapour. Exp Ther Med 2020; 19:2826-2832. [PMID: 32256766 PMCID: PMC7098213 DOI: 10.3892/etm.2020.8530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 10/21/2019] [Indexed: 12/24/2022] Open
Abstract
Electronic cigarettes are becoming increasingly common as a form of nicotine usage, known as vaping. Numerous studies have demonstrated that using electronic cigarettes may lead to nicotine dependence and has a potentially harmful impact on health. The present study compared the impact of electronic and conventional cigarettes on lung tissue. The experiment included 30 male Wistar rats. The animals were divided into three groups: Group A was exposed to electronic cigarette liquid vapour; group B to conventional smoke; and group C constituted the control group without exposition to the nicotine. In both experimental groups numerous alterations were observed, including a collapse of parenchyma, hyperhagia, hyperplasia of type II of pneumocytes, collagen deposition and an increased number of macrophages within thickened alveolar septa. Additionally, an initial elastolysis was observed. The elastic fibers were disrupted, sparse, irregular and thickened, whereas the numbers of α-SMA positive myofibroblasts and blood vessels were highest in the group exposed to conventional cigarette smoke. In conclusion, the usage of the electronic cigarettes leads to milder pathological alterations compared with traditional cigarette smoking. Nevertheless, the histopathological damage caused by vaping may lead to the development of alterations in the lung tissue which consequently hinder gas exchange.
Collapse
Affiliation(s)
- Ewelina Wawryk-Gawda
- Department of Histology and Embryology with Experimental Cytology Unit, Medical University in Lublin, 20-080 Lublin, Poland
| | - Patrycja Chylińska-Wrzos
- Department of Histology and Embryology with Experimental Cytology Unit, Medical University in Lublin, 20-080 Lublin, Poland
| | - Michał K Zarobkiewicz
- Department of Clinical Immunology, Medical University in Lublin, 20-093 Lublin, Poland
| | - Katarzyna Chłapek
- Department of Financial Accounting, Cracow University of Economics, 31-510 Cracow, Poland
| | - Barbara Jodłowska-Jędrych
- Department of Histology and Embryology with Experimental Cytology Unit, Medical University in Lublin, 20-080 Lublin, Poland
| |
Collapse
|
28
|
Du Y, Liu B, Xu G, Rong S, Sun Y, Wu Y, Snetselaar LG, Wallace RB, Bao W. Association of Electronic Cigarette Regulations With Electronic Cigarette Use Among Adults in the United States. JAMA Netw Open 2020; 3:e1920255. [PMID: 32003818 PMCID: PMC7042861 DOI: 10.1001/jamanetworkopen.2019.20255] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
IMPORTANCE Millions of Americans use electronic cigarettes (e-cigarettes). A growing number of state and local governments have started to draft and implement laws regarding the sale, marketing, and use of e-cigarettes. The association of US state regulations regarding e-cigarettes with e-cigarette use remains unknown. OBJECTIVE To examine the association of US state regulations regarding e-cigarettes with current e-cigarette use among adults in the United States. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study included adults aged 18 years or older from the 2016 and 2017 Behavioral Risk Factor Surveillance System, which is a nationwide, telephone-administered survey that collects state-representative data on health-related risk behaviors, chronic health conditions, and use of preventive services. Data analysis was performed from February 1, 2019, to April 31, 2019. EXPOSURES United States state laws regulating e-cigarette use, including prohibiting e-cigarette use in indoor areas of private workplaces, restaurants, and bars; requiring retailers to purchase a license to sell e-cigarettes; prohibiting self-service displays of e-cigarettes; prohibiting sales of tobacco products, including e-cigarettes, to persons younger than 21 years; and e-cigarette taxes. MAIN OUTCOMES AND MEASURES Current use of e-cigarettes. RESULTS Among 894 997 participants aged 18 years or older (503 688 women [51.3%], 679 443 non-Hispanic white [62.6%], 71 730 non-Hispanic black [16.3%], 69 823 Hispanic [11.4%], and 74 001 non-Hispanic other races [9.8%]), 28 907 (weighted prevalence, 4.4%) were currently using e-cigarettes. The age-standardized weighted prevalence of current e-cigarette use varied across US states and territories, from 1.0% in Puerto Rico to 6.2% in Guam. After adjustment for demographic, socioeconomic, and lifestyle factors, including conventional cigarette use, the odds ratios of current e-cigarette use were 0.90 (95% CI, 0.83-0.98) for state laws prohibiting e-cigarette use in indoor areas of private workplaces, restaurants, and bars; 0.90 (95% CI, 0.85-0.95) for state laws requiring retailers to purchase a license to sell e-cigarettes; 1.04 (95% CI, 0.99-1.09) for state laws prohibiting self-service displays of e-cigarettes; 0.86 (95% CI, 0.74-0.99) for state laws prohibiting sales of tobacco products, including e-cigarettes, to persons younger than 21 years; and 0.89 (95% CI, 0.83-0.96) for state laws applying taxes to e-cigarettes. CONCLUSIONS AND RELEVANCE These findings suggest that several state regulations regarding e-cigarettes may be associated with reduced e-cigarette use among US adults.
Collapse
Affiliation(s)
- Yang Du
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City
| | - Buyun Liu
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City
| | - Guifeng Xu
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City
| | - Shuang Rong
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City
| | - Yangbo Sun
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City
| | - Yuxiao Wu
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City
| | - Linda G. Snetselaar
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City
| | - Robert B. Wallace
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City
| | - Wei Bao
- Department of Epidemiology, University of Iowa College of Public Health, Iowa City
| |
Collapse
|
29
|
Palmisani J, Di Gilio A, Palmieri L, Abenavoli C, Famele M, Draisci R, de Gennaro G. Evaluation of Second-Hand Exposure to Electronic Cigarette Vaping under a Real Scenario: Measurements of Ultrafine Particle Number Concentration and Size Distribution and Comparison with Traditional Tobacco Smoke. TOXICS 2019; 7:E59. [PMID: 31775282 PMCID: PMC6958336 DOI: 10.3390/toxics7040059] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/18/2019] [Accepted: 11/21/2019] [Indexed: 11/17/2022]
Abstract
The present study aims to evaluate the impact of e-cig second-hand aerosol on indoor air quality in terms of ultrafine particles (UFPs) and potential inhalation exposure levels of passive bystanders. E-cig second-hand aerosol characteristics in terms of UFPs number concentration and size distribution exhaled by two volunteers vaping 15 different e-liquids inside a 49 m3 room and comparison with tobacco smoke are discussed. High temporal resolution measurements were performed under natural ventilation conditions to simulate a realistic exposure scenario. Results showed a systematic increase in UFPs number concentration (part cm-3) related to a 20-min vaping session (from 6.56 × 103 to 4.01 × 104 part cm-3), although this was one up to two order of magnitude lower than that produced by one tobacco cigarette consumption (from 1.12 × 105 to 1.46 × 105 part cm-3). E-cig second-hand aerosol size distribution exhibits a bimodal behavior with modes at 10.8 and 29.4 nm in contrast with the unimodal typical size distribution of tobacco smoke with peak mode at 100 nm. In the size range 6-26 nm, particles concentration in e-cig second-hand aerosol were from 2- (Dp = 25.5 nm) to 3800-fold (Dp = 9.31 nm) higher than in tobacco smoke highlighting that particles exhaled by users and potentially inhaled by bystanders are nano-sized with high penetration capacity into human airways.
Collapse
Affiliation(s)
- Jolanda Palmisani
- Department of Biology, University of Bari, Via Orabona 4, 70125 Bari, Italy; (A.D.G.); (L.P.); (G.d.G.)
| | - Alessia Di Gilio
- Department of Biology, University of Bari, Via Orabona 4, 70125 Bari, Italy; (A.D.G.); (L.P.); (G.d.G.)
| | - Laura Palmieri
- Department of Biology, University of Bari, Via Orabona 4, 70125 Bari, Italy; (A.D.G.); (L.P.); (G.d.G.)
| | - Carmelo Abenavoli
- National Institute of Health, National Centre for Chemicals, Cosmetic products and Consumer Health Protection, Viale Regina Elena 299, 00161 Roma, Italy; (C.A.); (M.F.); (R.D.)
| | - Marco Famele
- National Institute of Health, National Centre for Chemicals, Cosmetic products and Consumer Health Protection, Viale Regina Elena 299, 00161 Roma, Italy; (C.A.); (M.F.); (R.D.)
| | - Rosa Draisci
- National Institute of Health, National Centre for Chemicals, Cosmetic products and Consumer Health Protection, Viale Regina Elena 299, 00161 Roma, Italy; (C.A.); (M.F.); (R.D.)
| | - Gianluigi de Gennaro
- Department of Biology, University of Bari, Via Orabona 4, 70125 Bari, Italy; (A.D.G.); (L.P.); (G.d.G.)
| |
Collapse
|
30
|
Avino P, Rosada A, Manigrasso M. The inorganic fraction in e-liquids used in vapor products including e-cigarettes. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06762-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
31
|
Yu Y, Mao L, Lu X, Yuan W, Chen Y, Jiang L, Ding L, Sang L, Xu Z, Tian T, Wu S, Zhuang X, Chu M. Functional Variant in 3'UTR of FAM13A Is Potentially Associated with Susceptibility and Survival of Lung Squamous Carcinoma. DNA Cell Biol 2019; 38:1269-1277. [PMID: 31539274 DOI: 10.1089/dna.2019.4892] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
FAM13A is associated with aging lung disease (primarily chronic obstructive pulmonary disorder and pulmonary fibrosis) and shows stable expression throughout lung development. However, a few systematic studies of FAM13A have been conducted to assess the pathogenesis of lung cancer, particularly susceptibility. We predicted that single-nucleotide polymorphisms (SNPs) in FAM13A may be associated with lung cancer development. We systematically selected five functional SNPs (rs2602120, rs3017895, rs9224, rs7657817, and rs3756050) and genotyped them with the Genesky proprietary improved Multiligase Detection Reaction multiplex SNP genotyping system in a case-control study of 626 lung cancer cases and 667 cancer-free controls. The functional effects of FAM13A and specific miRNAs (miRNA-22-5p and miRNA-1301-3p) were evaluated based on The Cancer Genome Atlas database. We found that rs9224 in the 3' untranslated region (UTR) of FAM13A was potentially associated with an increased risk of lung squamous carcinoma (LUSQ) (additive model: odds ratio = 1.47, 95% confidence interval = 1.04-2.07, p = 0.028). In addition, the results of expression quantitative trait loci analysis suggested that the rs9224 polymorphism affects the expression of FAM13A (p = 0.050) and miRNA-22-5p (p = 0.031) in LUSQ. Further, survival analysis indicated decreased overall survival in the presence of the variant alleles of rs9224 (p = 0.048). The present results indicate that variant genotypes of rs9224 in the FAM13A 3'UTR may modify LUSQ susceptibility by affecting the binding of miRNA-22-5p and predict a poor prognosis of patients with LUSQ.
Collapse
Affiliation(s)
- Yuhui Yu
- Department of Epidemiology, School of Public Health, Nantong University, Nantong, Jiangsu, China
| | - Liping Mao
- Department of Oncology, The Sixth People's Hospital of Nantong, Nantong, China
| | - Xiao Lu
- Department of Oncology, Changshu No.1 People's Hospital, Suzhou, China
| | - Weiyan Yuan
- Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Yujia Chen
- Department of Epidemiology, School of Public Health, Nantong University, Nantong, Jiangsu, China
| | - Liying Jiang
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Li Ding
- Internal Medicine, Nantong Maternal and Child Health Hospital Affiliated to Nantong University, Nantong, China
| | - Lingli Sang
- Department of Epidemiology, School of Public Health, Nantong University, Nantong, Jiangsu, China
| | - Zhengcheng Xu
- Department of Epidemiology, School of Public Health, Nantong University, Nantong, Jiangsu, China
| | - Tian Tian
- Department of Epidemiology, School of Public Health, Nantong University, Nantong, Jiangsu, China
| | - Shuangshuang Wu
- Jiangsu Provincial Key Laboratory of Geriatrics, Department of Geriatrics, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xun Zhuang
- Department of Epidemiology, School of Public Health, Nantong University, Nantong, Jiangsu, China
| | - Minjie Chu
- Department of Epidemiology, School of Public Health, Nantong University, Nantong, Jiangsu, China
| |
Collapse
|
32
|
Badea M, Gaman L, Delia C, Ilea A, Leașu F, Henríquez-Hernández LA, Luzardo OP, Rădoi M, Rogozea L. Trends of Lipophilic, Antioxidant and Hematological Parameters Associated with Conventional and Electronic Smoking Habits in Middle-Age Romanians. J Clin Med 2019; 8:E665. [PMID: 31083602 PMCID: PMC6571835 DOI: 10.3390/jcm8050665] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/01/2019] [Accepted: 05/09/2019] [Indexed: 01/15/2023] Open
Abstract
It is known that cigarette smoking is correlated with medical associated inquires. New electronic cigarettes are intensively advertised as an alternative to conventional smoking, but only a few studies demonstrate their harmful potential. A cross-sectional study was designed using 150 subjects from Brasov (Romania), divided into three groups: non-smokers (NS = 58), conventional cigarettes smokers (CS = 58) and electronic cigarettes users (ECS = 34). The aim of this study was to determine levels of some plasma lipophilic and hematological components, and the total antioxidant status that could be associated with the smoking status of the subjects. Serum low density lipoproteins (LDL) cholesterol increased significantly for ECS participants versus NS group (18.9% difference) (p < 0.05). Also, the CS group is characterized by an increase of serum LDL cholesterol (7.9% difference vs. NS), but with no significant statistical difference. The variation of median values of serum very low density lipoproteins (VLDL) was in order NS < ECS < CS, with statistical difference between NS and CS groups (34.6% difference; p = 0.023). When comparing the antioxidant status of the three groups, significant differences (p < 0.05) were obtained between NS vs. CS and NS vs. ECS. Similar behavior was identified for CS and ECS. Statistically significant changes (p < 0.0001) for both vitamin A and vitamin E were identified in the blood of NS vs. CS and NS vs. ECS, and also when comparing vitamin A in the blood of the CS group versus the ECS group (p < 0.05). When all groups were compared, the difference in the white blood cell (WBC) was (p = 0.008). A slight increase in the red blood cell (RBC) count was observed, but with no statistical difference between groups. These results indicated that conventional cigarette and e-cigarette usage promotes the production of excess reactive oxygen species, involving different pathways, different antioxidants and bioactive molecules.
Collapse
Affiliation(s)
- Mihaela Badea
- Faculty of Medicine, Transilvania University of Brasov, Brasov 500019, Romania.
| | - Laura Gaman
- "Carol Davila" University of Medicine and Pharmacy, Bucharest 050474, Romania.
| | - Corina Delia
- National Institute for Mother and Child Health "Alessandrescu-Rusescu", Bucharest 20395, Romania.
| | - Anca Ilea
- Faculty of Medicine, Transilvania University of Brasov, Brasov 500019, Romania.
| | - Florin Leașu
- Faculty of Medicine, Transilvania University of Brasov, Brasov 500019, Romania.
| | - Luis Alberto Henríquez-Hernández
- Toxicology Unit, Clinical Sciences Department, Universidad de Las Palmas de Gran Canaria, Paseo Blas Cabrera Felipe, s/n, 35019 Las Palmas de Gran Canaria, Spain.
| | - Octavio P Luzardo
- Toxicology Unit, Clinical Sciences Department, Universidad de Las Palmas de Gran Canaria, Paseo Blas Cabrera Felipe, s/n, 35019 Las Palmas de Gran Canaria, Spain.
| | - Mariana Rădoi
- Faculty of Medicine, Transilvania University of Brasov, Brasov 500019, Romania.
| | - Liliana Rogozea
- Faculty of Medicine, Transilvania University of Brasov, Brasov 500019, Romania.
| |
Collapse
|
33
|
Shankar A, Dubey A, Saini D, Singh M, Prasad CP, Roy S, Bharati SJ, Rinki M, Singh N, Seth T, Khanna M, Sethi N, Kumar S, Sirohi B, Mohan A, Guleria R, Rath GK. Environmental and occupational determinants of lung cancer. Transl Lung Cancer Res 2019; 8:S31-S49. [PMID: 31211104 PMCID: PMC6546634 DOI: 10.21037/tlcr.2019.03.05] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 03/11/2019] [Indexed: 12/24/2022]
Abstract
Lung cancer has become a global problem, from a rare disease to an emerging public health issue. The current data of GLOBOCAN 2018, indicates that this disease has recorded highest mortality among all types of cancer. The etiological factors of lung cancer have become more multiplex because of increasing industrialization and environmental pollution around the world, especially in India. There is a rise in incidence of lung cancer among non-smokers and this can be attributed to environmental and occupational exposure to various kinds of hazardous substances. Target mutations are high in Lung cancer among non-smokers when compared to smokers. Some developed countries have guidelines and policies for prevention and control of risk factors focusing on these issues. Intervention aiming for primary prevention can be an important and cost-effective tool in developing countries to deal with increasing incidence of lung cancer. There is a need to define high risk group among non-smokers after taking into account environmental and occupational determinants as important risk factors. Research on etiology of lung cancer and prevention provides evidence to work on global incidence and prevalence of lung cancer, and for designing cost effective lung cancer prevention strategies. Research in the area of lung cancer prevention should be considered to recognize the areas where action is required to prevent environment and occupation related lung cancer. The government and occupational health and safety organizations have taken many steps in the last few years that can help to protect workers from these exposures. But the dangers are still there, so there is a need to do more to limit these exposures around workplace. This whole situation guides us to advocate population-based intervention along with policy implementation.
Collapse
Affiliation(s)
- Abhishek Shankar
- Preventive Oncology, Dr BR Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Delhi, India
| | - Anusha Dubey
- Indian Society of Clinical Oncology, Delhi, India
| | - Deepak Saini
- Indian Society of Clinical Oncology, Delhi, India
| | - Mayank Singh
- Medical Oncology (Lab), Dr BR Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Delhi, India
| | - Chandra Prakash Prasad
- Medical Oncology (Lab), Dr BR Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Delhi, India
| | - Shubham Roy
- Indian Society of Clinical Oncology, Delhi, India
| | - Sachidanand Jee Bharati
- Oncoanaesthesia and Palliative Medicine, Dr BR Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Delhi, India
| | - Minakshi Rinki
- Microbiology, Swami Shraddhanand College, Delhi University, Delhi, India
| | - Navneet Singh
- Pulmonary Medicine, Post Graduate Institute of Medical Education & Research, Chandigarh, India
| | - Tulika Seth
- Clinical Hematology, All India Institute of Medical Sciences, Delhi, India
| | | | | | - Sunil Kumar
- Surgical Oncology, Dr BR Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Delhi, India
| | - Bhawna Sirohi
- Medical Oncology, Max Institute of Cancer Care, Delhi, India
| | - Anant Mohan
- Pulmonary Medicine and Sleep Disorders, All India Institute of Medical Sciences, Delhi, India
| | - Randeep Guleria
- Pulmonary Medicine and Sleep Disorders, All India Institute of Medical Sciences, Delhi, India
| | - Goura Kishor Rath
- Radiation Oncology, Dr BR Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, Delhi, India
| |
Collapse
|
34
|
Braun M, Koger F, Klingelhöfer D, Müller R, Groneberg DA. Particulate Matter Emissions of Four Different Cigarette Types of One Popular Brand: Influence of Tobacco Strength and Additives. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E263. [PMID: 30658514 PMCID: PMC6352107 DOI: 10.3390/ijerph16020263] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/10/2019] [Accepted: 01/15/2019] [Indexed: 01/13/2023]
Abstract
The inhalation of particulate matter (PM) in second-hand smoke (SHS) is hazardous to health of smokers and non-smokers. Tobacco strength (amount of tar, nicotine, and carbon monoxide) and different additives might have an effect on the amount of PM. This study aimed to investigate the influence of tobacco strength or additives on PM. Four cigarette types of the brand Marlboro with different strengths and with or without additives were analyzed in comparison to the 3R4F reference cigarette. SHS was generated by an automatic environmental tobacco smoke emitter (AETSE) in an enclosed space with a volume of 2.88 m³. PM concentrations (PM10, PM2.5, PM₁) were measured with a laser aerosol spectrometer followed by statistical analysis. The two strongest Marlboro brands (Red and Red without additives) showed the highest PM concentrations of all tested cigarettes. The measured mean concentrations Cmean of PM10 increased up to 1458 µg/m³ for the Marlboro Red without additives (PM2.5: 1452 µg/m³, PM₁: 1263 µg/m³). The similarly strong Marlboro Red showed very similar PM values. The second strongest type Marlboro Gold showed 36% (PM10, PM2.5) and 32% (PM₁) lower values, respectively. The "lightest" type Marlboro Silver Blue showed 54% (PM10, PM2.5) or 50% (PM₁) lower PM values. The results indicate that the lower the tar, nicotine, and carbon monoxide amounts, as well as the longer the cigarette filter, the lower are the PM levels. An influence of additives could not be determined.
Collapse
Affiliation(s)
- Markus Braun
- Institute of Occupational, Social and Environmental Medicine, Goethe University Frankfurt, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany.
| | - Friedemann Koger
- Institute of Occupational, Social and Environmental Medicine, Goethe University Frankfurt, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany.
| | - Doris Klingelhöfer
- Institute of Occupational, Social and Environmental Medicine, Goethe University Frankfurt, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany.
| | - Ruth Müller
- Institute of Occupational, Social and Environmental Medicine, Goethe University Frankfurt, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany.
- Medical Entomology, Department of Biomedical Sciences, Institute of Tropical Medicine, Nationalestraat 155, B-2000 Antwerpen, Germany.
| | - David A Groneberg
- Institute of Occupational, Social and Environmental Medicine, Goethe University Frankfurt, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany.
| |
Collapse
|