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Williams AD, Ha S, Shenassa E, Messer LC, Kanner J, Mendola P. Joint effects of ethnic enclave residence and ambient volatile organic compounds exposure on risk of gestational diabetes mellitus among Asian/Pacific Islander women in the United States. Environ Health 2021; 20:56. [PMID: 33964949 PMCID: PMC8106843 DOI: 10.1186/s12940-021-00738-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 04/26/2021] [Indexed: 05/06/2023]
Abstract
BACKGROUND Asian/Pacific Islander (API) communities in the United States often reside in metropolitan areas with distinct social and environmental attributes. Residence in an ethnic enclave, a socially distinct area, is associated with lower gestational diabetes mellitus (GDM) risk, yet exposure to high levels of air pollution, including volatile organic compounds (VOCS), is associated with increased GDM risk. We examined the joint effects of ethnic enclaves and VOCs to better understand GDM risk among API women, the group with the highest prevalence of GDM. METHODS We examined 9069 API births in the Consortium on Safe Labor (19 hospitals, 2002-2008). API ethnic enclaves were defined as areas ≥66th percentile for percent API residents, dissimilarity (geographic dispersal of API and White residents), and isolation (degree that API individuals interact with another API individual). High levels of 14 volatile organic compounds (VOC) were defined as ≥75th percentile. Four joint categories were created for each VOC: Low VOC/Enclave (reference group), Low VOC/No Enclave, High VOC/Enclave, High VOC/No Enclave. GDM was reported in medical records. Hierarchical logistic regression estimated odds ratios (OR) and 95% confidence intervals (95%CI) between joint exposures and GDM, adjusted for maternal factors and area-level poverty. Risk was estimated for 3-months preconception and first trimester exposures. RESULTS Enclave residence was associated with lower GDM risk regardless of VOC exposure. Preconception benzene exposure was associated with increased risk when women resided outside enclaves [High VOC/No Enclave (OR:3.45, 95%CI:1.77,6.72)], and the effect was somewhat mitigated within enclaves, [High VOC/Enclave (OR:2.07, 95%:1.09,3.94)]. Risks were similar for 12 of 14 VOCs during preconception and 10 of 14 during the first trimester. CONCLUSIONS API residence in non-enclave areas is associated with higher GDM risk, regardless of VOC level. Ethnic enclave residence may mitigate effects of VOC exposure, perhaps due to lower stress levels. The potential benefit of ethnic enclaves warrants further study.
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Affiliation(s)
- Andrew D. Williams
- Public Health program, Department of Population Health, School of Medicine & Health Sciences, University of North Dakota, Room E162, 1301 North Columbia Road Stop 9037, Grand Forks, ND 58202-9037 USA
| | - Sandie Ha
- School of Social Sciences, Humanities and Arts, Health Science Research Institute, University of California, 5200 N. Lake Road, Merced, CA USA
| | - Edmond Shenassa
- Maternal and Child Health Program, Department of Family Science, University of Maryland College Park, 4200 Valley Drive, College Park, MD USA
| | - Lynne C. Messer
- OHSU-PSU School of Public Health, Portland State University, 506 SW Mill Street 470H, Portland, OR USA
| | - Jenna Kanner
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710B Rockledge Drive, MSC, Bethesda, MD 7004 USA
| | - Pauline Mendola
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, 6710B Rockledge Drive, MSC, Bethesda, MD 7004 USA
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Byun J, Song B, Lee K, Kim B, Hwang HW, Ok MR, Jeon H, Lee K, Baek SK, Kim SH, Oh SJ, Kim TH. Identification of urban particulate matter-induced disruption of human respiratory mucosa integrity using whole transcriptome analysis and organ-on-a chip. J Biol Eng 2019; 13:88. [PMID: 31788025 PMCID: PMC6858671 DOI: 10.1186/s13036-019-0219-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 10/25/2019] [Indexed: 12/24/2022] Open
Abstract
Background Exposure to air particulate matter (PM) is associated with various diseases in the human respiratory system. To date, most in vitro studies showing cellular responses to PM have been performed in cell culture using a single cell type. There are few studies considering how multicellular networks communicate in a tissue microenvironment when responding to the presence of PM. Here, an in vitro three-dimensional (3D) respiratory mucosa-on-a-chip, composed of human nasal epithelial cells, fibroblasts, and endothelial cells, is used to recapitulate and better understand the effects of urban particulate matter (UPM) on human respiratory mucosa. Results We hypothesized that the first cells to contact with UPM, the nasal epithelial cells, would respond similar to the tissue microenvironment, and the 3D respiratory mucosa model would be a suitable platform to capture these events. First, whole transcriptome analysis revealed that UPM induced gene expression alterations in inflammatory and adhesion-related genes in human nasal epithelial cells. Next, we developed an in vitro 3D respiratory mucosa model composed of human nasal epithelial cells, fibroblasts, and endothelial cells and demonstrated that the model is structurally and functionally compatible with the respiratory mucosa. Finally, we used our model to expose human nasal epithelial cells to UPM, which led to a disruption in the integrity of the respiratory mucosa by decreasing the expression of zonula occludens-1 in both the epithelium and endothelium, while also reducing vascular endothelial cadherin expression in the endothelium. Conclusions We demonstrate the potential of the 3D respiratory mucosa model as a valuable tool for the simultaneous evaluation of multicellular responses caused by external stimuli in the human respiratory mucosa. We believe that the evaluation strategy proposed in the study will move us toward a better understanding of the detailed molecular mechanisms associated with pathological changes in the human respiratory system.
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Affiliation(s)
- Junhyoung Byun
- 1Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, 73, Inchon-ro, Seongbuk-gu, Seoul, 02841 Korea
| | - Boa Song
- 2Center for Biomaterials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792 Republic of Korea
| | - Kyungwoo Lee
- 2Center for Biomaterials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792 Republic of Korea
| | - Byoungjae Kim
- 1Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, 73, Inchon-ro, Seongbuk-gu, Seoul, 02841 Korea.,3Neuroscience Research institute, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Hae Won Hwang
- 2Center for Biomaterials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792 Republic of Korea
| | - Myung-Ryul Ok
- 2Center for Biomaterials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792 Republic of Korea
| | - Hojeong Jeon
- 2Center for Biomaterials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792 Republic of Korea
| | - Kijeong Lee
- 1Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, 73, Inchon-ro, Seongbuk-gu, Seoul, 02841 Korea
| | - Seung-Kuk Baek
- 1Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, 73, Inchon-ro, Seongbuk-gu, Seoul, 02841 Korea
| | - Sang-Heon Kim
- 2Center for Biomaterials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792 Republic of Korea.,4Department of Biomedical Engineering, University of Science and Technology, Daejon, Republic of Korea
| | - Seung Ja Oh
- 2Center for Biomaterials, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792 Republic of Korea
| | - Tae Hoon Kim
- 1Department of Otorhinolaryngology-Head & Neck Surgery, College of Medicine, Korea University, 73, Inchon-ro, Seongbuk-gu, Seoul, 02841 Korea
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Dergham M, Lepers C, Verdin A, Cazier F, Billet S, Courcot D, Shirali P, Garçon G. Temporal-spatial variations of the physicochemical characteristics of air pollution Particulate Matter (PM2.5-0.3) and toxicological effects in human bronchial epithelial cells (BEAS-2B). ENVIRONMENTAL RESEARCH 2015; 137:256-267. [PMID: 25601727 DOI: 10.1016/j.envres.2014.12.015] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 12/16/2014] [Accepted: 12/17/2014] [Indexed: 06/04/2023]
Abstract
While the evidence for the health adverse effects of air pollution Particulate Matter (PM) has been growing, there is still uncertainty as to which constituents within PM are most harmful. Hence, to contribute to fulfill this gap of knowledge, some physicochemical characteristics and toxicological endpoints (i.e. cytotoxicity, oxidative damage, cytokine secretion) of PM2.5-0.3 samples produced during two different seasons (i.e. spring/summer or autumn/winter) in three different surroundings (i.e. rural, urban, or industrial) were studied, thereby expecting to differentiate their respective adverse effects in human bronchial epithelial cells (BEAS-2B). Physicochemical characteristics were closely related to respective origins and seasons of the six PM2.5-0.3 samples, highlighting the respective contributions of industrial and heavy motor vehicle traffic sources. Space- and season-dependent differences in cytotoxicity of the six PM2.5-0.3 samples could only be supported by considering both the physicochemical properties and the variance in air PM concentrations. Whatever spaces and seasons, dose- and even time-dependent increases in oxidative damage and cytokine secretion were reported in PM2.5-0.3-exposed BEAS-2B cells. However, the relationship between the chemical composition of each of the six PM2.5-0.3 samples and their oxidative or inflammatory potentials seemed to be very complex. These results supported the role of inorganic, ionic and organic components as exogenous source of Reactive Oxygen Species and, thereafter, cytokine secretion. Nevertheless, one of the most striking observation was that some inorganic, ionic and organic chemical components were preferentially associated with early oxidative events whereas others in the later oxidative damage and/or cytokine secretion. Taken together, these results indicated that PM mass concentration alone might not be able to explain the health outcomes, because PM is chemically nonspecific, and supported growing evidence that PM-size, composition and emission source, together with sampling season, interact in a complex manner to produce PM2.5-0.3-induced human adverse health effects.
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Affiliation(s)
- Mona Dergham
- Université Lille Nord de France, Lille, France; EA 4492, Université du Littoral-Côte d'Opale, Dunkerque, France
| | - Capucine Lepers
- Université Lille Nord de France, Lille, France; EA 4492, Université du Littoral-Côte d'Opale, Dunkerque, France
| | - Anthony Verdin
- Université Lille Nord de France, Lille, France; EA 4492, Université du Littoral-Côte d'Opale, Dunkerque, France
| | - Fabrice Cazier
- Université Lille Nord de France, Lille, France; Centre Commun de Mesures, Université du Littoral-Côte d'Opale, Dunkerque, France
| | - Sylvain Billet
- Université Lille Nord de France, Lille, France; EA 4492, Université du Littoral-Côte d'Opale, Dunkerque, France
| | - Dominique Courcot
- Université Lille Nord de France, Lille, France; EA 4492, Université du Littoral-Côte d'Opale, Dunkerque, France
| | - Pirouz Shirali
- Université Lille Nord de France, Lille, France; EA 4492, Université du Littoral-Côte d'Opale, Dunkerque, France
| | - Guillaume Garçon
- Université Lille Nord de France, Lille, France; EA 4492, Université du Littoral-Côte d'Opale, Dunkerque, France; EA4483, Université de Lille 2, Lille, France.
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Brucker N, Moro AM, Charão MF, Durgante J, Freitas F, Baierle M, Nascimento S, Gauer B, Bulcão RP, Bubols GB, Ferrari PD, Thiesen FV, Gioda A, Duarte MMMF, de Castro I, Saldiva PH, Garcia SC. Biomarkers of occupational exposure to air pollution, inflammation and oxidative damage in taxi drivers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2013; 463-464:884-93. [PMID: 23872245 DOI: 10.1016/j.scitotenv.2013.06.098] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 05/27/2013] [Accepted: 06/24/2013] [Indexed: 05/06/2023]
Abstract
Exposure to environmental pollutants has been recognised as a risk factor for cardiovascular events. 1-hydroxypyrene (1-OHP) is a biomarker of exposure to polycyclic aromatic hydrocarbons (PAHs) from traffic-related air pollution. Experimental studies indicate that PAH exposure could be associated with inflammation and atherogenesis. Thus, the purpose of this study was to evaluate whether the biomarker of PAH exposure is associated with biomarkers of inflammation and oxidative stress and if these effects modulate the risk of developing cardiovascular diseases in workers exposed to air pollution. This study included 60 subjects, comprising 39 taxi drivers and 21 non-occupationally exposed persons. Environmental PM2.5 and benzo[a]pyrene (BaP) levels, in addition to biomarkers of exposure and oxidative damage, were determined. Inflammatory cytokines (IL-1β, IL-6, IL-10, TNF-α, IFN-γ and hs-CRP) and serum levels of oxidised LDL (ox-LDL), auto-antibodies (ox-LDL-Ab) and homocysteine (Hcy) were also evaluated. PM2.5 and BaP exhibited averages of 12.4±6.9 μg m(-3) and 1.0±0.6 ng m(-3), respectively. Urinary 1-OHP levels were increased in taxi drivers compared to the non-occupationally exposed subjects (p<0.05) and were positively correlated with pro-inflammatory cytokines and negatively correlated with antioxidants. Furthermore, taxi drivers had elevated pro-inflammatory cytokines, biomarkers of oxidative damage, and ox-LDL, ox-LDL-Ab and Hcy levels, although antioxidant enzymes were decreased compared to the non-occupationally exposed subjects (p<0.05). In summary, our findings indicate that taxi drivers showed major exposure to pollutants, such as PAHs, in relation to non-occupationally exposed subjects. This finding was associated with higher inflammatory biomarkers and Hcy, which represent important predictors for cardiovascular events. These data suggest a contribution of PAHs to cardiovascular diseases upon occupational exposure.
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Affiliation(s)
- Natália Brucker
- Post-graduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil; Laboratory of Toxicology (LATOX), Department of Clinical Analysis, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
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Nazariah SSN, Juliana J, Abdah MA. Interleukin-6 via sputum induction as biomarker of inflammation for indoor particulate matter among primary school children in Klang Valley, Malaysia. Glob J Health Sci 2013; 5:93-105. [PMID: 23777726 PMCID: PMC4776807 DOI: 10.5539/gjhs.v5n4p93] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 03/10/2013] [Indexed: 01/05/2023] Open
Abstract
In the last few years, air within homes have been indicates by various and emerging body as more serious polluted than those outdoor. Prevalence of respiratory inflammation among school children aged 8 and 10 years old attending national primary schools in urban and rural area were conducted in Klang Valley. Two population studies drawn from the questionnaires were used to investigate the association between indoor particulate matter (PM2.5 & PM10) in a home environment and respiratory implication through the understanding of biological responses. Approximately 430 healthy school children of Standard 2 and Standard 5 were selected. Indication of respiratory symptoms using adaptation questionnaire from American Thoracic Society (1978). Sputum sample collection taken for biological analysis. IL-6 then was analyse by using ELISA techniques. Indoor PM2.5 and PM10 were measured using Dust Trak Aerosol Monitor. The mean concentration of PM2.5 (45.38 µg/m3) and PM10 (80.07 µg/m3) in urban home environment is significantly higher compared to those in rural residential area (p=0.001). Similar trend also shows by the prevalence of respiratory symptom. Association were found with PM2.5 and PM10 with the level of IL-6 among school children. A greater exposure to PM2.5 and PM10 are associated with higher expression of IL-6 level suggesting that the concentration of indoor particulate in urban density area significantly influence the health of children.
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Affiliation(s)
- S S N Nazariah
- Department of Environmental and Occupational Health, Universiti Putra, Malaysia
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6
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Yamaguchi N, Sakotani A, Ichijo T, Kenzaka T, Tani K, Baba T, Nasu M. Break down of asian dust particle on wet surface and their possibilities of cause of respiratory health effects. Biol Pharm Bull 2012; 35:1187-90. [PMID: 22791171 DOI: 10.1248/bpb.b12-00085] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Asian dust (called 'Kosa' in Japan) is comprised of a large number of soil particles originating from the arid regions and deserts of China and Mongolia and dispersed long-range to Japan. A major public concern about Asian dust is its impact on human health. We collected Asian dust particles over the Japan Sea at an altitude of 900 m to directly estimate their effects on health. We examined the properties of the collected particles on wet surfaces. Through size distribution measurements and scanning electron microscopy with energy dispersive X-ray (SEM-EDX) analysis, we demonstrated that small dust particles (less than 1 µm) form aggregations with water-soluble salts such as calcium and sodium and they are transported to Japan as aggregates. These aggregates probably break down into small particles on nasal mucous membranes and may cause adverse respiratory health effects.
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Behrsing HP, Furniss MJ, Davis M, Tomaszewski JE, Parchment RE. In vitro exposure of precision-cut lung slices to 2-(4-amino-3-methylphenyl)-5-fluorobenzothiazole lysylamide dihydrochloride (NSC 710305, Phortress) increases inflammatory cytokine content and tissue damage. Toxicol Sci 2012; 131:470-9. [PMID: 23143926 DOI: 10.1093/toxsci/kfs319] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The anticancer drug (2-[4-amino-3-methylphenyl]-5-fluorobenzothiazole lysylamide dihydrochloride) (NSC 710305, Phortress) is a metabolically activated prodrug that causes DNA adduct formation and subsequent toxicity. Preclinically, it was found that hepatic, bone marrow, and pulmonary toxicity presented challenges to developing this drug. An ex vivo precision-cut lung slice (PCLS) model was used to search for concentration dependent effects of NSC 710305 (10, 25, 50, and 100 µM) on cytokine content, protein content, and immuno/histological endpoints. Preparation and culture of PCLS caused an initial spike in proinflammatory cytokine expression and therefore treatment with NSC 710305 was delayed until 48 h after initiating the slice cultures to avoid confounding the response to slicing with any drug response. PCLSs were evaluated after 24, 48, and 72 h exposures to NSC 710305. Reversibility of toxicity due to the 72-h treatment was evaluated after a 24-h recovery period. NSC 710305 caused a concentration-dependent cytokine response, and only the toxicity caused by a 72-h exposure to 25 µM reversed during the 24-h recovery period. Immuno/histological examination and quantitation of tissue protein levels indicated that tissue destruction, ED-1 (activated macrophage) staining, and protein levels were associated with the levels of proinflammatory cytokines in the tissue. In conclusion, the concentration- and time-dependent inflammatory response of PCLS to NSC 710305 preceded relevant tissue damage by a few days. The no-observable adverse effect level (NOAEL) for 24, 48, and 72 h exposures was established as 10 µM NSC 710305.
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Affiliation(s)
- Holger P Behrsing
- Laboratory of Investigative & Screening Toxicology, LHTP, SAIC-Frederick, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, USA.
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Jassal MS, Yu AM, Bhatia R, Keens TG, Davidson Ward SL. Effect of residential proximity to major roadways on cystic fibrosis exacerbations. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2012; 23:119-131. [PMID: 22838501 DOI: 10.1080/09603123.2012.708917] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Ambient air pollution has been attributed with an increase in exacerbation frequencies among the cystic fibrosis (CF) population. This study correlates exacerbation frequency with proximity to roadways and two criteria air pollutants. Clinical data was extracted from the Cystic Fibrosis Foundation National Patient Registry and Electronic Medical Records at Children's Hospital Los Angeles (CHLA). Average annual air pollutant levels were obtained from selected US Environmental Protection Agency's monitoring stations. Geographic proximity to monitoring stations and roadways were analyzed using spatial mapping software. A total of 145 patients from the CHLA's CF center were characterized by a dichotomous exacerbation category. No significant association was determined between the frequency of exacerbations and exposure to fine particulate matter and ozone levels. Residential proximity to US-designated highways and freeways also did not achieve significance (p = 0.3777) but was noted to be correlated with major arterial roadways (p = 0.0420). Associations of environmental exposures may have important implications for future predictive models of CF clinical outcomes.
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Affiliation(s)
- Mandeep S Jassal
- Department of Pediatrics , Children's Hospital Los Angeles, Los Angeles , USA.
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9
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Dergham M, Lepers C, Verdin A, Billet S, Cazier F, Courcot D, Shirali P, Garçon G. Prooxidant and proinflammatory potency of air pollution particulate matter (PM₂.₅₋₀.₃) produced in rural, urban, or industrial surroundings in human bronchial epithelial cells (BEAS-2B). Chem Res Toxicol 2012; 25:904-19. [PMID: 22404339 DOI: 10.1021/tx200529v] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Compelling evidence indicates that exposure to air pollution particulate matter (PM) affects human health. However, how PM composition interacts with PM-size to cause adverse health effects needs elucidation. In this study, we were also interested in the physicochemical characteristics and toxicological end points of PM₂.₅₋₀.₃ samples produced in rural, urban, or industrial surroundings, thereby expecting to differentiate their respective in vitro adverse health effects in human bronchial epithelial cells (BEAS-2B). Physicochemical characteristics of the three PM₂.₅₋₀.₃ samples, notably their inorganic and organic components, were closely related to their respective emission sources. Referring also to the dose/response relationships of the three PM₂.₅₋₀.₃ samples, the most toxicologically relevant exposure times (i.e., 24, 48, and 72 h) and doses (i.e., 3.75 μg PM/cm² and 15 μg PM/cm²) to use to study the underlying mechanisms of action involved in PM-induced lung toxicity were chosen. Organic chemicals adsorbed on the three PM₂.₅₋₀.₃ samples (i.e., polycyclic aromatic hydrocarbons) were able to induce the gene expression of xenobiotic-metabolizing enzymes (i.e., Cytochrome P4501A1 and 1B1, and, to a lesser extent, NADPH-quinone oxidoreductase-1). Moreover, intracellular reactive oxygen species within BEAS-2B cells exposed to the three PM₂.₅₋₀.₃ samples induced oxidative damage (i.e., 8-hydroxy-2'-deoxyguanosine formation, malondialdehyde production and/or glutathione status alteration). There were also statistically significant increases of the gene expression and/or protein secretion of inflammatory mediators (i.e., notably IL-6 and IL-8) in BEAS-2B cells after their exposure to the three PM₂.₅₋₀.₃ samples. Taken together, the present findings indicated that oxidative damage and inflammatory response preceeded cytotoxicity in air pollution PM₂.₅₋₀.₃-exposed BEAS-2B cells and supported the idea that PM-size, composition, and origin could interact in a complex manner to determine the in vitro responsiveness to PM.
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Dieme D, Cabral-Ndior M, Garçon G, Verdin A, Billet S, Cazier F, Courcot D, Diouf A, Shirali P. Relationship between physicochemical characterization and toxicity of fine particulate matter (PM2.5) collected in Dakar city (Senegal). ENVIRONMENTAL RESEARCH 2012; 113:1-13. [PMID: 22284916 DOI: 10.1016/j.envres.2011.11.009] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 10/25/2011] [Accepted: 11/04/2011] [Indexed: 05/31/2023]
Abstract
The massive increase in emissions of air pollutants due to economic and industrial growth in developing countries has made air quality a crucial health problem in this continent. Hence, it is somewhat critical to have a better knowledge on the air pollution in Sub-Saharan Africa countries. Three air pollution PM2.5 samples were also collected in two urban sites (i.e., Fann and Faidherbe) in Dakar (Senegal) and in a rural site near Dakar (i.e., Ngaparu). The two urban sites mainly differ in the type of used vehicles: in Fann, most of the traffic is made of buses, which are absent, in Faidherbe. The physicochemical characteristics of the three PM2.5 samples revealed their high heterogeneities and complexities, related to the multiple natural and anthropogenic emission sources. Results from 5-bromodeoxyuridine incorporation into DNA, mitochondrial dehydrogenase activity, and extracellular lactate dehydrogenase activity in PM2.5-exposed BEAS-2B cells suggested the exposure conditions (i.e., 3 and 12 μg PM/cm² during 24, 48, and 72 h) to further consider. The organic fractions (i.e., mainly PAHs) of the PM(2.5) samples were able to induce a time and/or concentration-dependent gene expression of CYP1A1 and CYP1B1, and, to a lesser extent, NQO1. There was a time and/or dose-dependent increase of both the gene expression and/or protein secretion of inflammatory mediators (i.e., TNF-α, IL-1β, IL-6, and/or IL-8) in PM(2.5)-exposed BEAS-2B cells. In agreement with the physicochemical characterization, urban PM(2.5) samples caused greater biological responses in BEAS-2B cells than the rural one. Variable concentrations of transition metals (i.e., Fe, Al, Pb, Mn, Zn) and organic compounds (i.e., PAHs) founded in the three PM2.5 samples might be firmly involved in a time- and/or dose-dependent toxicity, relying on inflammatory processes.
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Affiliation(s)
- Denis Dieme
- Université Lille Nord de France, Lille, France
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11
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Zhang Y, Zhang B, Xu DQ, Li WP, Xu M, Li JH, Xie XY, Fan QX, Liu W, Mu DG, Dong HY, Wang YX, Nan YD, Li ZC, Jin FG. Tanshinone IIA Attenuates Seawater Aspiration-Induced Lung Injury by Inhibiting Macrophage Migration Inhibitory Factor. Biol Pharm Bull 2011; 34:1052-7. [PMID: 21720012 DOI: 10.1248/bpb.34.1052] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yong Zhang
- Department of Respiratory Medicine, Tangdu Hospital, Fourth Military Medical University, P.R. China
| | - Bo Zhang
- Department of Pathology and Pathophysiology, Fourth Military Medical University, P.R. China
| | - Dun-Quan Xu
- Department of Pathology and Pathophysiology, Fourth Military Medical University, P.R. China
| | - Wang-Ping Li
- Department of Respiratory Medicine, Tangdu Hospital, Fourth Military Medical University, P.R. China
| | - Min Xu
- Department of Pathology and Pathophysiology, Fourth Military Medical University, P.R. China
| | - Jia-Huan Li
- Department of Respiratory Medicine, Tangdu Hospital, Fourth Military Medical University, P.R. China
| | - Xiao-Yan Xie
- Department of Respiratory Medicine, Tangdu Hospital, Fourth Military Medical University, P.R. China
| | - Qi-Xin Fan
- Department of Respiratory Medicine, Tangdu Hospital, Fourth Military Medical University, P.R. China
| | - Wei Liu
- Department of Respiratory Medicine, Tangdu Hospital, Fourth Military Medical University, P.R. China
| | - De-Guang Mu
- Department of Respiratory Medicine, Tangdu Hospital, Fourth Military Medical University, P.R. China
| | - Hai-Ying Dong
- Department of Pathology and Pathophysiology, Fourth Military Medical University, P.R. China
| | - Yan-Xia Wang
- Department of Pathology and Pathophysiology, Fourth Military Medical University, P.R. China
| | - Yan-Dong Nan
- Department of Respiratory Medicine, Tangdu Hospital, Fourth Military Medical University, P.R. China
| | - Zhi-Chao Li
- Department of Pathology and Pathophysiology, Fourth Military Medical University, P.R. China
| | - Fa-Guang Jin
- Department of Respiratory Medicine, Tangdu Hospital, Fourth Military Medical University, P.R. China
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