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Sabour S, Harzand-Jadidi S, Jafari-Khounigh A, Zarea Gavgani V, Sedaghat Z, Alavi N. The association between ambient air pollution and migraine: a systematic review. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:271. [PMID: 38363415 DOI: 10.1007/s10661-024-12376-w] [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: 08/08/2023] [Accepted: 01/15/2024] [Indexed: 02/17/2024]
Abstract
Some studies have shown the effect of air pollution on migraine. However, it needs to be confirmed in larger-scale studies, as scientific evidence is scarce regarding the association between air pollution and migraine. Therefore, this systematic review aims to determine whether there are associations between outdoor air pollution and migraine. A literature search was performed in Scopus, Medline (via PubMed), EMBASE, and Web of Science. A manual search for resources and related references was also conducted to complete the search. All observational studies investigating the association between ambient air pollution and migraine, with inclusion criteria, were entered into the review. Fourteen out of 1417 identified articles met the inclusion criteria and entered the study. Among the gaseous air pollutants, there was a correlation between exposure to nitrogen dioxide (NO2) (78.3% of detrimental relationships) and carbon monoxide (CO) (68.0% of detrimental relationships) and migraine, but no apparent correlation has been found for sulfur dioxide (SO2) (21.2% of detrimental relationships) and ozone (O3) (55.2% of detrimental relationships). In the case of particulate air pollutants, particulate matter with a diameter of 10 μm or less (PM10) (76.0% of detrimental relationships) and particulate matter with a diameter of 2.5 μm or less (PM2.5) (61.3% of detrimental relationships) had relationships with migraine. In conclusion, exposure to NO2, CO, PM10, and PM2.5 is associated with migraine headaches, while no conclusive evidence was found to confirm the correlation between O3 and SO2 with migraine. Further studies with precise methodology are recommended in different cities around the world for all pollutants with an emphasis on O3 and SO2.
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Affiliation(s)
- Siamak Sabour
- Safety Promotions and Injury Prevention Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Islamic Republic of Iran
- Department of Clinical Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Sepideh Harzand-Jadidi
- Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Jafari-Khounigh
- Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Vahideh Zarea Gavgani
- Tabriz Health Services Management Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zahra Sedaghat
- Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nadali Alavi
- Department of Environmental Health Engineering, School of Public Health and Safety, Environmental and Occupational Hazards Control Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Marín-Palma D, Fernandez GJ, Ruiz-Saenz J, Taborda NA, Rugeles MT, Hernandez JC. Particulate matter impairs immune system function by up-regulating inflammatory pathways and decreasing pathogen response gene expression. Sci Rep 2023; 13:12773. [PMID: 37550362 PMCID: PMC10406897 DOI: 10.1038/s41598-023-39921-w] [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: 02/28/2023] [Accepted: 08/02/2023] [Indexed: 08/09/2023] Open
Abstract
Airborne particulate matter produced by industrial sources and automobiles has been linked to increased susceptibility to infectious diseases and it is known to be recognized by cells of the immune system. The molecular mechanisms and changes in gene expression profiles induced in immune cells by PM have not been fully mapped out or systematically integrated. Here, we use RNA-seq to analyze mRNA profiles of human peripheral blood mononuclear cells after exposure to coarse particulate matter (PM10). Our analyses showed that PM10 was able to reprogram the expression of 1,196 genes in immune cells, including activation of a proinflammatory state with an increase in cytokines and chemokines. Activation of the IL-36 signaling pathway and upregulation of chemokines involved in neutrophil and monocyte recruitment suggest mechanisms for inflammation upon PM exposure, while NK cell-recruiting chemokines are repressed. PM exposure also increases transcription factors associated with inflammatory pathways (e.g., JUN, RELB, NFKB2, etc.) and reduces expression of RNases and pathogen response genes CAMP, DEFAs, AZU1, APOBEC3A and LYZ. Our analysis across gene regulatory and signaling pathways suggests that PM plays a role in the dysregulation of immune cell functions, relevant for antiviral responses and general host defense against pathogens.
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Affiliation(s)
- Damariz Marín-Palma
- Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, Medellín, Colombia
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Geysson Javier Fernandez
- Grupo Biología y Control de Enfermedades Infecciosas BCEI, Universidad de Antioquia-UdeA, Medellín, Colombia
| | - Julian Ruiz-Saenz
- Grupo de Investigación en Ciencias Animales GRICA, Universidad Cooperativa de Colombia, Bucaramanga, Colombia
| | - Natalia A Taborda
- Grupo de Investigaciones Biomédicas Uniremington, Programa de Medicina, Facultad de Ciencias de La Salud, Corporación Universitaria Remington, Medellín, Colombia
- Universidad Cooperativa de Colombia, Campus Medellín-Envigado, Medellín, Colombia
| | - Maria T Rugeles
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Juan C Hernandez
- Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, Medellín, Colombia.
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Tahara M, Fujino Y, Yamasaki K, Oda K, Kido T, Sakamoto N, Kawanami T, Kataoka K, Egashira R, Hashisako M, Suzuki Y, Fujisawa T, Mukae H, Suda T, Yatera K. Exposure to PM 2.5 is a risk factor for acute exacerbation of surgically diagnosed idiopathic pulmonary fibrosis: a case-control study. Respir Res 2021; 22:80. [PMID: 33711988 PMCID: PMC7955640 DOI: 10.1186/s12931-021-01671-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 02/24/2021] [Indexed: 01/04/2023] Open
Abstract
Background Short-term exposure to ozone and nitrogen dioxide is a risk factor for acute exacerbation (AE) of idiopathic pulmonary fibrosis (AE-IPF). The comprehensive roles of exposure to fine particulate matter in AE-IPF remain unclear. We aim to investigate the association of short-term exposure to fine particulate matter with the incidence of AE-IPF and to determine the exposure-risk time window during 3 months before the diagnosis of AE-IPF. Methods IPF patients were retrospectively identified from the nationwide registry in Japan. We conducted a case–control study to assess the correlation between AE-IPF incidence and short-term exposure to eight air pollutants, including particulate matter < 2.5 µm (PM2.5). In the time-series data, we compared monthly mean exposure concentrations between months with AE (case months) and those without AE (control months). We used multilevel mixed-effects logistic regression models to consider individual and institutional-level variables, and also adjusted these models for several covariates, including temperature and humidity. An additional analysis with different monthly lag periods was conducted to determine the risk-exposure time window for 3 months before the diagnosis of AE-IPF. Results Overall, 152 patients with surgically diagnosed IPF were analyzed. AE-IPF was significantly associated with an increased mean exposure level of nitric oxide (NO) and PM2.5 30 days prior to AE diagnosis. Adjusted odds ratio (OR) with a 10 unit increase in NO was 1.46 [95% confidence interval (CI) 1.11–1.93], and PM2.5 was 2.56 (95% CI 1.27–5.15). Additional analysis revealed that AE-IPF was associated with exposure to NO during the lag periods lag 1, lag 2, lag 1–2, and lag 1–3, and PM2.5 during the lag periods lag 1 and lag 1–2. Conclusions Our results show that PM2.5 is a risk factor for AE-IPF, and the risk-exposure time window related to AE-IPF may lie within 1–2 months before the AE diagnosis. Further investigation is needed on the novel findings regarding the exposure to NO and AE-IPF. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-021-01671-6.
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Affiliation(s)
- Masahiro Tahara
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu-city, Fukuoka, 807-8555, Japan
| | - Yoshihisa Fujino
- Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - Kei Yamasaki
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu-city, Fukuoka, 807-8555, Japan
| | - Keishi Oda
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu-city, Fukuoka, 807-8555, Japan
| | - Takashi Kido
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu-city, Fukuoka, 807-8555, Japan.,Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Noriho Sakamoto
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Toshinori Kawanami
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu-city, Fukuoka, 807-8555, Japan
| | - Kensuke Kataoka
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, Seto, Japan
| | - Ryoko Egashira
- Department of Radiology, Faculty of Medicine, Saga University, Saga, Japan
| | - Mikiko Hashisako
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuzo Suzuki
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tomoyuki Fujisawa
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hiroshi Mukae
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Takafumi Suda
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kazuhiro Yatera
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu-city, Fukuoka, 807-8555, Japan.
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Wang F, Liu J, Zeng H. Interactions of particulate matter and pulmonary surfactant: Implications for human health. Adv Colloid Interface Sci 2020; 284:102244. [PMID: 32871405 PMCID: PMC7435289 DOI: 10.1016/j.cis.2020.102244] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 08/12/2020] [Accepted: 08/14/2020] [Indexed: 12/22/2022]
Abstract
Particulate matter (PM), which is the primary contributor to air pollution, has become a pervasive global health threat. When PM enters into a respiratory tract, the first body tissues to be directly exposed are the cells of respiratory tissues and pulmonary surfactant. Pulmonary surfactant is a pivotal component to modulate surface tension of alveoli during respiration. Many studies have proved that PM would interact with pulmonary surfactant to affect the alveolar activity, and meanwhile, pulmonary surfactant would be adsorbed to the surface of PM to change the toxic effect of PM. This review focuses on recent studies of the interactions between micro/nanoparticles (synthesized and environmental particles) and pulmonary surfactant (natural surfactant and its models), as well as the health effects caused by PM through a few significant aspects, such as surface properties of PM, including size, surface charge, hydrophobicity, shape, chemical nature, etc. Moreover, in vitro and in vivo studies have shown that PM leads to oxidative stress, inflammatory response, fibrosis, and cancerization in living bodies. By providing a comprehensive picture of PM-surfactant interaction, this review will benefit both researchers for further studies and policy-makers for setting up more appropriate regulations to reduce the adverse effects of PM on public health.
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Affiliation(s)
- Feifei Wang
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510700, China,Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Jifang Liu
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510700, China.
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
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5
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Hwang J, Kwon J, Yi H, Bae HJ, Jang M, Kim N. Association between long-term exposure to air pollutants and cardiopulmonary mortality rates in South Korea. BMC Public Health 2020; 20:1402. [PMID: 32928163 PMCID: PMC7491133 DOI: 10.1186/s12889-020-09521-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 09/08/2020] [Indexed: 12/14/2022] Open
Abstract
Background The association between long-term exposure to air pollutants, including nitrogen dioxide (NO2), carbon monoxide (CO), sulfur dioxide (SO2), ozone (O3), and particulate matter 10 μm or less in diameter (PM10), and mortality by ischemic heart disease (IHD), cerebrovascular disease (CVD), pneumonia (PN), and chronic lower respiratory disease (CLRD) is unclear. We investigated whether living in an administrative district with heavy air pollution is associated with an increased risk of mortality by the diseases through an ecological study using South Korean administrative data over 19 years. Methods A total of 249 Si-Gun-Gus, unit of administrative districts in South Korea were studied. In each district, the daily concentrations of CO, SO2, NO2, O3, and PM10 were averaged over 19 years (2001–2018). Age-adjusted mortality rates by IHD, CVD, PN and CLRD for each district were averaged for the same study period. Multivariate beta-regression analysis was performed to estimate the associations between air pollutant concentrations and mortality rates, after adjusting for confounding factors including altitude, population density, higher education rate, smoking rate, obesity rate, and gross regional domestic product per capita. Associations were also estimated for two subgrouping schema: Capital and non-Capital areas (77:172 districts) and urban and rural areas (168:81 districts). Results For IHD, higher SO2 concentrations were significantly associated with a higher mortality rate, whereas other air pollutants had null associations. For CVD, SO2 and PM10 concentrations were significantly associated with a higher mortality rate. For PN, O3 concentrations had significant positive associations with a higher mortality rate, while SO2, NO2, and PM10 concentrations had significant negative associations. For CLRD, O3 concentrations were associated with an increased mortality rate, while CO, NO2, and PM10 concentrations had negative associations. In the subgroup analysis, positive associations between SO2 concentrations and IHD mortality were consistently observed in all subgroups, while other pollutant-disease pairs showed null, or mixed associations. Conclusion Long-term exposure to high SO2 concentration was significantly and consistently associated with a high mortality rate nationwide and in Capital and non-Capital areas, and in urban and rural areas. Associations between other air pollutants and disease-related mortalities need to be investigated in further studies.
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Affiliation(s)
- Jeongeun Hwang
- Department of Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Jinhee Kwon
- Department of Biomedical Engineering, Asan Medical Institute of Convergence Science and Technology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Hahn Yi
- Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Hyun-Jin Bae
- Department of Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Miso Jang
- Department of Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Namkug Kim
- Department of Convergence Medicine, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, South Korea. .,Department of Radiology, University of Ulsan College of Medicine. Asan Medical Center, Seoul, Republic of Korea.
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6
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Hassan L, Pecht T, Goldstein N, Haim Y, Kloog I, Yarza S, Sarov B, Novack V. The effects of ambient particulate matter on human adipose tissue. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2019; 82:564-576. [PMID: 31242808 DOI: 10.1080/15287394.2019.1634381] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The effects of particulate matter (PM) air pollution on adipose tissue have mainly been studied in animal models. The aim of this study was to examine the potential associations between PM exposure and 25 cellular markers in human omental (OM) and subcutaneous (SC) adipose tissue. The PM exposure assessments for both PM2.5 (PM <2.5 μm in diameter) and PM10 (<10 μm) were based upon a novel hybrid satellite-based spatio-temporally resolved model. We calculated the PM exposure above the background threshold for 1 week (acute phase), 3 and 6 months (intermediate phase), and 1 year (chronic phase) prior to tissue harvesting and tested the associations with adipose cell metabolic effects using multiple linear regressions and heat maps strategy. Chemokine levels were found to increase after acute and intermediate exposure duration to PM10. The levels of stress signaling biomarkers in the SC and OM tissues rose after acute exposure to PM10 and PM2.5. Macrophage and leucocyte counts were associated with severity of PM exposure in all three duration groups. Adipocyte diameter decreased in all exposure periods. Our results provide evidence for significant contribution of air pollutants exposure to adipose tissue inflammation as well as for pathophysiological mechanisms of metabolic dysregulation that may be involved in the observed responses.
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Affiliation(s)
- Lior Hassan
- a Environmental Health Research Institute, Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Tal Pecht
- b Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Nir Goldstein
- b Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Yulia Haim
- b Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Itai Kloog
- c Department of Geography and Environmental Development, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Shaked Yarza
- a Environmental Health Research Institute, Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev , Beer-Sheva , Israel
| | - Batia Sarov
- d Department of Public Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Victor Novack
- a Environmental Health Research Institute, Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev , Beer-Sheva , Israel
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7
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Hamanaka RB, Mutlu GM. Particulate Matter Air Pollution: Effects on the Cardiovascular System. Front Endocrinol (Lausanne) 2018; 9:680. [PMID: 30505291 PMCID: PMC6250783 DOI: 10.3389/fendo.2018.00680] [Citation(s) in RCA: 239] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 10/30/2018] [Indexed: 12/18/2022] Open
Abstract
Air pollution is a complex mixture of gaseous and particulate components, each of which has detrimental effects on human health. While the composition of air pollution varies greatly depending on the source, studies from across the world have consistently shown that air pollution is an important modifiable risk factor for significantly increased morbidity and mortality. Moreover, clinical studies have generally shown a greater impact of particulate matter (PM) air pollution on health than the gaseous components. PM has wide-ranging deleterious effects on human health, particularly on the cardiovascular system. Both acute and chronic exposure to PM air pollution is associated with increased risk of death from cardiovascular diseases including ischemic heart disease, heart failure, and ischemic/thrombotic stroke. Particulate matter has also been shown to be an important endocrine disrupter, contributing to the development of metabolic diseases such as obesity and diabetes mellitus, which themselves are risk factors for cardiovascular disease. While the epidemiological evidence for the deleterious effects of PM air pollution on health is increasingly accepted, newer studies are shedding light on the mechanisms by which PM exerts its toxic effects. A greater understanding of how PM exerts toxic effects on human health is required in order to prevent and minimize the deleterious health effects of this ubiquitous environmental hazard. Air pollution is a growing public health problem and mortality due to air pollution is expected to double by 2050. Here, we review the epidemiological evidence for the cardiovascular effects of PM exposure and discuss current understanding about the biological mechanisms, by which PM exerts toxic effects on cardiovascular system to induce cardiovascular disease.
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Affiliation(s)
| | - Gökhan M. Mutlu
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, The University of Chicago, Chicago, IL, United States
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8
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Park EJ, Khaliullin TO, Shurin MR, Kisin ER, Yanamala N, Fadeel B, Chang J, Shvedova AA. Fibrous nanocellulose, crystalline nanocellulose, carbon nanotubes, and crocidolite asbestos elicit disparate immune responses upon pharyngeal aspiration in mice. J Immunotoxicol 2018; 15:12-23. [PMID: 29237319 DOI: 10.1080/1547691x.2017.1414339] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
With the rapid development of synthetic alternatives to mineral fibers, their possible effects on the environment and human health have become recognized as important issues worldwide. This study investigated effects of four fibrous materials, i.e. nanofibrillar/nanocrystalline celluloses (NCF and CNC), single-walled carbon nanotubes (CNTs), and crocidolite asbestos (ASB), on pulmonary inflammation and immune responses found in the lungs, as well as the effects on spleen and peripheral blood immune cell subsets. BALB/c mice were given NCF, CNC, CNT, and ASB on Day 1 by oropharyngeal aspiration. At 14 days post-exposure, the animals were evaluated. Total cell number, mononuclear phagocytes, polymorphonuclear leukocytes, lymphocytes, and LDH levels were significantly increased in ASB and CNT-exposed mice. Expression of cytokines and chemokines in bronchoalveolar lavage (BAL) was quite different in mice exposed to four particle types, as well as expression of antigen presentation-related surface proteins on BAL cells. The results revealed that pulmonary exposure to fibrous materials led to discrete local immune cell polarization patterns with a TH2-like response caused by ASB and TH1-like immune reaction to NCF, while CNT and CNC caused non-classical or non-uniform responses. These alterations in immune response following pulmonary exposure should be taken into account when testing the applicability of new nanosized materials with fibrous morphology.
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Affiliation(s)
- Eun-Jung Park
- a Department of Brain Science , Ajou University School of Medicine , Suwon , Republic of Korea
| | - Timur O Khaliullin
- b Exposure Assessment Branch , NIOSH/CDC , Morgantown , WV , USA.,c Department of Physiology, Pharmacology and Neuroscience , West Virginia University , Morgantown , WV , USA
| | - Michael R Shurin
- d Department of Pathology and Immunology , University of Pittsburgh , Pittsburgh , PA , USA
| | - Elena R Kisin
- b Exposure Assessment Branch , NIOSH/CDC , Morgantown , WV , USA
| | - Naveena Yanamala
- b Exposure Assessment Branch , NIOSH/CDC , Morgantown , WV , USA
| | - Bengt Fadeel
- e Division of Molecular Toxicology, Institute of Environmental Medicine , Karolinska Institute , Stockholm , Sweden
| | - Jaerak Chang
- a Department of Brain Science , Ajou University School of Medicine , Suwon , Republic of Korea.,f Graduate School of Biomedical Sciences , Ajou University School of Medicine , Suwon , Republic of Korea
| | - Anna A Shvedova
- b Exposure Assessment Branch , NIOSH/CDC , Morgantown , WV , USA.,c Department of Physiology, Pharmacology and Neuroscience , West Virginia University , Morgantown , WV , USA
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9
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Rastogi M, Sarkar S, Makol A, Sandip Singh R, Saikia UN, Banerjee D, Chopra S, Chakraborti A. Anti-endothelial cell antibody rich sera from rheumatic heart disease patients induces proinflammatory phenotype and methylation alteration in endothelial cells. Genes Dis 2018; 5:275-289. [PMID: 30320192 PMCID: PMC6176156 DOI: 10.1016/j.gendis.2018.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 02/05/2018] [Indexed: 01/06/2023] Open
Abstract
Rheumatic heart disease (RHD) is a major cause of cardiovascular morbidity and mortality in developing nations like India. RHD commonly affects the mitral valve which is lined by a single layer of endothelial cells (ECs). The role of ECs in mitral valve damage during RHD is not well elucidated. In here, anti-endothelial cell antibody from RHD patients has been used to stimulate the ECs (HUVECs and HMVECs). ECs proinflammatory phenotype with increased expression of TNFα, IL-6, IL-8, IFNγ, IL-1β, ICAM1, VCAM1, E-selectin, laminin B, and vimentin was documented in both ECs. The promoter hypomethylation of various key inflammatory cytokines (TNFα, IL-6, and IL-8), integrin (ICAM1) associated with leukocyte transendothelial migration, and extracellular matrix genes (vimentin, and laminin) were also observed. Further, the in-vitro data was in accordance with ex-vivo observations which correlated significantly with the etiological factors such as smoking, socioeconomic status, and housing. Thus, the study sheds light on the role of ECs in RHD which is a step forward in the elucidation of disease pathogenesis.
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Affiliation(s)
- Mukul Rastogi
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Subendu Sarkar
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Ankita Makol
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Rana Sandip Singh
- Department of Cardiothoracic and Vascular Surgery, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Uma Nahar Saikia
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Dibyajyoti Banerjee
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Seema Chopra
- Department of Obstetrics and Gynaecology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Anuradha Chakraborti
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
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10
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Hu Y, Wang LS, Li Y, Li QH, Li CL, Chen JM, Weng D, Li HP. Effects of particulate matter from straw burning on lung fibrosis in mice. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 56:249-258. [PMID: 29031221 DOI: 10.1016/j.etap.2017.10.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 10/04/2017] [Accepted: 10/06/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the impacts of particulate matter 2.5 (PM2.5) from straw burning on the acute exacerbation of lung fibrosis in mice and the preventive effects of N-acetylcysteine (NAC). METHODS The composition, particle size, and 30-min concentration change in an exposure system of the PM2.5 from straw-burning were determined. Forty C57BL male mice were equally randomized to two groups: bleomycin (BLM)-induced lung fibrosis with an exposure to air (BLM+air) and BLM+PM2.5 groups. On day 7 after receiving intratracheal injection of BLM, mice were exposed to air or PM2.5 in an exposure system for 30min twice daily and then sacrificed after one-week or four-week exposure (10 mice/group). Mouse survival, lung histopathology, macrophage accumulation in the lung, and pro-inflammatory cytokine levels in alveolar lavage fluid (ALF) were determined. RESULTS PM2.5 from straw burning were mainly composed of organic matter (74.1%); 10.92% of the inorganic matter of the PM2.5 were chloride ion; 4.64% were potassium ion; other components were sulfate, nitrate, and nitrite. Particle size was 10nm-2μm. Histopathology revealed a greater extent of inflammatory cell infiltration in the lung, widened alveolar septum, and lung fibrosis in the BLM+PM2.5 group than in the BLM+air group and a greater extent of those adverse effects after four-week than after one-week exposure to PM2.5. The BLM+PM2.5 group also showed macrophages containing particular matter and increased pulmonary collagen deposition as the exposure to PM2.5 increased. Interleukin (IL)-6 and TNF-α levels in ALF were significantly higher in the BLM+PM2.5 group than in the BLM+air group (P<0.05) and significantly higher after four-week exposure than after one-week exposure to PM2.5 (P<0.05). TGF-β levels in ALF after four-week exposure were significantly higher in the BLM+PM2.5 group than in the BLM+air group (P<0.05). The levels of IL-6, TNF-α, and TGF-β in peripheral serum were not significantly different in the BLM+PM2.5 and BLM+air groups. Lung hydroxyproline contents increased as the exposure to PM2.5 increased and were significantly higher after four-week than after one-week exposure (P=0.019). Exposure to PM2.5 did not affect the survival of normal mice (100%) but reduced the survival of mice with BLM-induced IPF (30%), whereas NAC extended the survival (70%, vs. BLM+PM2.5, P=0.032). CONCLUSION Exposure of mice with BLM-induced IPF to PM2.5 from straw burning exacerbated lung inflammation and fibrosis and increased mortality; NAC increased the mouse survival, indicating protective effects.
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Affiliation(s)
- Yang Hu
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai 200433, China.
| | - Liu-Sheng Wang
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai 200433, China.
| | - Yan Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai 200433, China.
| | - Qiu-Hong Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai 200433, China.
| | - Chun-Lin Li
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
| | - Jian-Min Chen
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
| | - Dong Weng
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai 200433, China.
| | - Hui-Ping Li
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University, School of Medicine, Shanghai 200433, China.
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Association Between Long-term Exposure to Traffic-related Air Pollution and Inflammatory and Thrombotic Markers in Middle-aged Adults. Epidemiology 2017; 28 Suppl 1:S74-S81. [DOI: 10.1097/ede.0000000000000715] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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Gorr MW, Falvo MJ, Wold LE. Air Pollution and Other Environmental Modulators of Cardiac Function. Compr Physiol 2017; 7:1479-1495. [PMID: 28915333 PMCID: PMC7249238 DOI: 10.1002/cphy.c170017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cardiovascular disease (CVD) is the leading cause of death in developed regions and a worldwide health concern. Multiple external causes of CVD are well known, including obesity, diabetes, hyperlipidemia, age, and sedentary behavior. Air pollution has been linked with the development of CVD for decades, though the mechanistic characterization remains unknown. In this comprehensive review, we detail the background and epidemiology of the effects of air pollution and other environmental modulators on the heart, including both short- and long-term consequences. Then, we provide the experimental data and current hypotheses of how pollution is able to cause the CVD, and how exposure to pollutants is exacerbated in sensitive states. Published 2017. Compr Physiol 7:1479-1495, 2017.
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Affiliation(s)
- Matthew W. Gorr
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner College of Medicine, Columbus, Ohio, USA
- College of Nursing, The Ohio State University, Columbus, Ohio, USA
| | - Michael J. Falvo
- War Related Illness and Injury Study Center, Department of Veterans Affairs, New Jersey Health Care System, East Orange, New Jersey, USA
- New Jersey Medical School, Rutgers Biomedical and Health Sciences, Newark, New Jersey, USA
| | - Loren E. Wold
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner College of Medicine, Columbus, Ohio, USA
- College of Nursing, The Ohio State University, Columbus, Ohio, USA
- Department of Physiology and Cell Biology, The Ohio State University, Columbus, Ohio, USA
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B-vitamin Supplementation Mitigates Effects of Fine Particles on Cardiac Autonomic Dysfunction and Inflammation: A Pilot Human Intervention Trial. Sci Rep 2017; 7:45322. [PMID: 28367952 PMCID: PMC5377246 DOI: 10.1038/srep45322] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 02/21/2017] [Indexed: 12/02/2022] Open
Abstract
Ambient fine particle (PM2.5) pollution triggers acute cardiovascular events. Individual-level preventions are proposed to complement regulation in reducing the global burden of PM2.5–induced cardiovascular diseases. We determine whether B vitamin supplementation mitigates PM2.5 effects on cardiac autonomic dysfunction and inflammation in a single-blind placebo-controlled crossover pilot trial. Ten healthy adults received two-hour controlled-exposure-experiment to sham under placebo, PM2.5 (250 μg/m3) under placebo, and PM2.5 (250 μg/m3) under B-vitamin supplementation (2.5 mg/d folic acid, 50 mg/d vitamin B6, and 1 mg/d vitamin B12), respectively. At pre-, post-, 24 h-post-exposure, we measured resting heart rate (HR) and heart rate variability (HRV) with electrocardiogram, and white blood cell (WBC) counts with hematology analyzer. Compared to sham, PM2.5 exposure increased HR (3.8 bpm, 95% CI: 0.3, 7.4; P = 0.04), total WBC count (11.5%, 95% CI: 0.3%, 24.0%; P = 0.04), lymphocyte count (12.9%, 95% CI: 4.4%, 22.1%; P = 0.005), and reduced low-frequency power (57.5%, 95% CI: 2.5%, 81.5%; P = 0.04). B-vitamin supplementation attenuated PM2.5 effect on HR by 150% (P = 0.003), low-frequency power by 90% (P = 0.01), total WBC count by 139% (P = 0.006), and lymphocyte count by 106% (P = 0.02). In healthy adults, two-hour PM2.5 exposure substantially increases HR, reduces HRV, and increases WBC. These effects are reduced by B vitamin supplementation.
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Chang HS, Lee TH, Jun JA, Baek AR, Park JS, Koo SM, Kim YK, Lee HS, Park CS. Neutrophilic inflammation in asthma: mechanisms and therapeutic considerations. Expert Rev Respir Med 2016; 11:29-40. [PMID: 27918221 DOI: 10.1080/17476348.2017.1268919] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
INTRODUCTION Neutrophilic airway inflammation represents a pathologically distinct form of asthma and frequently appears in symptomatic adulthood asthmatics. However, clinical impacts and mechanisms of the neutrophilic inflammation have not been thoroughly evaluated up to date. Areas covered: Currently, distinct clinical manifestations, triggers, and molecular mechanisms of the neutrophilic inflammation (namely Toll-like receptor, Th1, Th17, inflammasome) are under investigation in asthma. Furthermore, possible role of the neutrophilic inflammation is being investigated in respect to the airway remodeling. We searched the related literatures published during the past 10 years on the website of Pub Med under the title of asthma and neutrophilic inflammation in human. Expert commentary: Epidemiologic and experimental studies have revealed that the neutrophilic airway inflammation is induced by a wide variety of stimuli including ozone, particulate matters, cigarette smoke, occupational irritants, endotoxins, microbial infection and colonization, and aeroallergens. These triggers provoke diverse immune and inflammatory responses leading to progressive and sometimes irreversible airway obstruction. Clinically, neutrophilic airway inflammation is frequently associated with severe asthma and poor response to glucocorticoid therapy, indicating the need for other treatment strategies. Accordingly, therapeutics will be targeted against the main mediators behind the underlying molecular mechanisms of the neutrophilic inflammation.
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Affiliation(s)
- Hun Soo Chang
- a Department of Interdisciplinary Program in Biomedical Science Major , Soonchunhyang Graduate School , Bucheon , Gyeonggi-do , Republic of Korea
| | - Tae-Hyeong Lee
- a Department of Interdisciplinary Program in Biomedical Science Major , Soonchunhyang Graduate School , Bucheon , Gyeonggi-do , Republic of Korea
| | - Ji Ae Jun
- a Department of Interdisciplinary Program in Biomedical Science Major , Soonchunhyang Graduate School , Bucheon , Gyeonggi-do , Republic of Korea
| | - Ae Rin Baek
- b Division of Allergy and Respiratory Disease , Soonchunhyang University Bucheon Hospital , Bucheon , Gyeonggi-do , Republic of Korea
| | - Jong-Sook Park
- b Division of Allergy and Respiratory Disease , Soonchunhyang University Bucheon Hospital , Bucheon , Gyeonggi-do , Republic of Korea
| | - So-My Koo
- c Division of Allergy and Respiratory Medicine , Soonchunhyang University Seoul Hospital , Seoul , Republic of Korea
| | - Yang-Ki Kim
- c Division of Allergy and Respiratory Medicine , Soonchunhyang University Seoul Hospital , Seoul , Republic of Korea
| | - Ho Sung Lee
- d Division of Respiratory Medicine , Soonchunhyang University CheonAn Hospital , Cheonan , Chungcheongnam-do , Republic of Korea
| | - Choon-Sik Park
- b Division of Allergy and Respiratory Disease , Soonchunhyang University Bucheon Hospital , Bucheon , Gyeonggi-do , Republic of Korea
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Szyszkowicz M, Kousha T. Air Pollution and Emergency Department Visits for Headache and Migraine. HEALTH SCOPE 2016. [DOI: 10.17795/jhealthscope-35122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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16
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Wu S, Wang B, Yang D, Wei H, Li H, Pan L, Huang J, Wang X, Qin Y, Zheng C, Shima M, Deng F, Guo X. Ambient particulate air pollution and circulating antioxidant enzymes: A repeated-measure study in healthy adults in Beijing, China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2016; 208:16-24. [PMID: 26074023 DOI: 10.1016/j.envpol.2015.06.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 05/12/2015] [Accepted: 06/05/2015] [Indexed: 05/06/2023]
Abstract
The association of systemic antioxidant activity with ambient air pollution has been unclear. A panel of 40 healthy college students underwent repeated blood collection for 12 occasions under three exposure scenarios before and after relocating from a suburban area to an urban area in Beijing, China in 2010-2011. We measured various air pollutants including fine particles (PM2.5) and determined circulating levels of antioxidant enzymes extracellular superoxide dismutase (EC-SOD) and glutathione peroxidase 1 (GPX1) in the laboratory. An interquartile range increase of 63.4 μg/m(3) at 3-d PM2.5 moving average was associated with a 6.3% (95% CI: 0.6, 12.4) increase in EC-SOD and a 5.5% (95% CI: 1.3, 9.8) increase in GPX1. Several PM2.5 chemical constituents, including negative ions (nitrate and chloride) and metals (e.g., iron and strontium), were consistently associated with increases in EC-SOD and GPX1. Our results support activation of circulating antioxidant enzymes following exposure to particulate air pollution.
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Affiliation(s)
- Shaowei Wu
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China
| | - Bin Wang
- Institute of Reproductive & Child Health, Peking University School of Public Health, Beijing, China
| | - Di Yang
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China
| | - Hongying Wei
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China
| | - Hongyu Li
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China
| | - Lu Pan
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China
| | - Jing Huang
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China
| | - Xin Wang
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China
| | - Yu Qin
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China
| | - Chanjuan Zheng
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China
| | - Masayuki Shima
- Department of Public Health, Hyogo College of Medicine, Hyogo, Japan
| | - Furong Deng
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China.
| | - Xinbiao Guo
- Department of Occupational and Environmental Health Sciences, Peking University School of Public Health, Beijing, China
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Bai N, van Eeden SF. Systemic and vascular effects of circulating diesel exhaust particulate matter. Inhal Toxicol 2014; 25:725-34. [PMID: 24255950 DOI: 10.3109/08958378.2013.844749] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
OBJECTIVE Numerous studies have found an association between transiently increased particulate matter air pollution and acute adverse cardiovascular health effects; however, the mechanisms underlying these effects are not clear. Translocation of ultra-fine ambient particulate matter has been proposed to play a key role in these acute side effects. This study was designed to determine the contribution of circulating (translocated) diesel exhaust particles (DEPs) to the systemic and vascular effects. METHODS C57 mice (10-week) received intravenous DEPs via tail vein injection. Following 1-h post-injection, inflammatory cytokines (IL-1β, IL-6 and TNF-α), peripheral blood cell counts, band cell counts, aortic endothelial function and vascular constriction were assessed. Thoracic aortae were isolated, and endothelial function was examined by measuring acetylcholine (ACh) and sodium nitroprusside (SNP)-stimulated vascular relaxation using a wire myograph. In addition, phenylephrine (PE)-stimulated vasoconstriction was also measured. The amount of DEPs deposited and trapped in tissues (the spleen, liver, lungs and heart) were quantified. RESULTS Acute systemic DEP exposure caused a significant increase in TNF-α, peripheral neutrophil and band cell counts. ACh and SNP-induced relaxation were not affected by acute systemic DEP exposure, neither was PE-stimulated constriction. There was a significantly increased DEP deposition in the spleen as well as in the liver. No significantly increased DEPs were detected in the lung and heart. CONCLUSION Here we show that circulating DEPs induce a systemic response characterized by increased TNF-α, peripheral granulocytes, but does not impact endothelial function. Our study also suggests that circulating particles are rapidly removed from the circulation and predominantly sequestered in the spleen and liver.
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Affiliation(s)
- Ni Bai
- The James Hogg Research Centre, Providence Heart and Lung Institute, St. Paul's Hospital, University of British Columbia , Vancouver, BC , Canada
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18
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Wahid NBA, Latif MT, Suan LS, Dominick D, Sahani M, Jaafar SA, Mohd Tahir N. Source identification of particulate matter in a semi-urban area of Malaysia using multivariate techniques. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2014; 92:317-322. [PMID: 24435135 DOI: 10.1007/s00128-014-1201-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Accepted: 01/06/2014] [Indexed: 06/03/2023]
Abstract
This study aims to determine the composition and sources of particulate matter with an aerodynamic diameter of 10 μm or less (PM10) in a semi-urban area. PM10 samples were collected using a high volume sampler. Heavy metals (Fe, Zn, Pb, Mn, Cu, Cd and Ni) and cations (Na(+), K(+), Ca(2+) and Mg(2+)) were detected using inductively coupled plasma mass spectrometry, while anions (SO4 (2-), NO3 (-), Cl(-) and F(-)) were analysed using Ion Chromatography. Principle component analysis and multiple linear regressions were used to identify the source apportionment of PM10. Results showed the average concentration of PM10 was 29.5 ± 5.1 μg/m(3). The heavy metals found were dominated by Fe, followed by Zn, Pb, Cu, Mn, Cd and Ni. Na(+) was the dominant cation, followed by Ca(2+), K(+) and Mg(2+), whereas SO4 (2-) was the dominant anion, followed by NO3 (-), Cl(-) and F(-). The main sources of PM10 were the Earth's crust/road dust, followed by vehicle emissions, industrial emissions/road activity, and construction/biomass burning.
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Affiliation(s)
- N B A Wahid
- School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
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Wong JYY, De Vivo I, Lin X, Christiani DC. Cumulative PM(2.5) exposure and telomere length in workers exposed to welding fumes. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2014; 77:441-55. [PMID: 24627998 PMCID: PMC4072226 DOI: 10.1080/15287394.2013.875497] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Telomeres are genomic structures that reflect both mitotic history and biochemical trauma to the genome. Metals inherent in fine particulate matter (PM(2.5)) were shown to be genotoxic via oxidative damage. However, few studies investigated the induction time of cumulative PM(2.5) exposure on telomere length in a longitudinal setting. Therefore, the purpose of this study was to assess the association between occupational PM(2.5) exposure in various time windows and telomere length. The study population consisted of 48 boilermakers and the follow-up period was 8 yr. The main exposures were cumulative occupational PM(2.5) in the month, year, and career prior to each blood draw, assessed via work history questionnaires and area air measures. Repeated telomere length measurements from leukocytes were assessed via real-time qualitative polymerase chain reaction (qPCR). Analysis was performed using linear mixed models controlling for confounders and white blood cell differentials. Cumulative PM(2.5) exposure was treated continuously and categorized into quartiles, in separate analyses. At any follow-up time, for each milligram per cubic meter per hour increase in cumulative PM(2.5) exposure in the prior month, there was a statistically significant decrease in relative telomere length of -0.04 units. When categorizing the exposure into quartiles, there was a significant negative association between telomere length and highest quartile of cumulative PM(2.5) exposure in the prior month (-0.16). These findings suggest that genomic trauma to leukocyte telomeres was more consistent with recent occupational PM(2.5) exposure, as opposed to cumulative exposure extending into the distant past.
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Affiliation(s)
- Jason Y. Y. Wong
- Department of Epidemiology, Harvard School of Public
Health, Boston, Massachusetts, USA
- Department of Environmental Health, Harvard School of
Public Health, Boston, Massachusetts, USA
- Channing Division of Network Medicine, Brigham and
Women’s Hospital, Boston, Massachusetts, USA
| | - Immaculata De Vivo
- Department of Epidemiology, Harvard School of Public
Health, Boston, Massachusetts, USA
- Channing Division of Network Medicine, Brigham and
Women’s Hospital, Boston, Massachusetts, USA
- Massachusetts General Hospital, Boston, Massachusetts,
USA
| | - Xihong Lin
- Department of Biostatistics, Harvard School of Public
Health, Boston, Massachusetts, USA
| | - David C. Christiani
- Department of Environmental Health, Harvard School of
Public Health, Boston, Massachusetts, USA
- Massachusetts General Hospital, Boston, Massachusetts,
USA
- Massachusetts General Hospital, Boston, Massachusetts,
USA
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Contribution of lung macrophages to the inflammatory responses induced by exposure to air pollutants. Mediators Inflamm 2013; 2013:619523. [PMID: 24058272 PMCID: PMC3766602 DOI: 10.1155/2013/619523] [Citation(s) in RCA: 171] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 07/13/2013] [Indexed: 11/18/2022] Open
Abstract
Large population cohort studies have indicated an association between exposure to particulate matter and cardiopulmonary morbidity and mortality. The inhalation of toxic environmental particles and gases impacts the innate and adaptive defense systems of the lung. Lung macrophages play a critically important role in the recognition and processing of any inhaled foreign material such as pathogens or particulate matter. Alveolar macrophages and lung epithelial cells are the predominant cells that process and remove inhaled particulate matter from the lung. Cooperatively, they produce proinflammatory mediators when exposed to atmospheric particles. These mediators produce integrated local (lung, controlled predominantly by epithelial cells) and systemic (bone marrow and vascular system, controlled predominantly by macrophages) inflammatory responses. The systemic response results in an increase in the release of leukocytes from the bone marrow and an increased production of acute phase proteins from the liver, with both factors impacting blood vessels and leading to destabilization of existing atherosclerotic plaques. This review focuses on lung macrophages and their role in orchestrating the inflammatory responses induced by exposure to air pollutants.
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Miyata R, Bai N, Vincent R, Sin DD, Van Eeden SF. Statins reduce ambient particulate matter-induced lung inflammation by promoting the clearance of particulate matter, < 10 μm from lung tissues. Chest 2013; 143:452-460. [PMID: 22910717 DOI: 10.1378/chest.12-1237] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND The 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (statins) suppress ambient particulate matter, 10 μm (PM(10) )-induced inflammatory response in vitro. The aim of this study was to determine the effect of statins on PM(10) -induced lung inflammation in vivo. METHODS New Zealand white rabbits were exposed to either PM(10) (1.0 mg/kg) or saline by direct intratracheal instillation three times a week for 4 weeks lovastatin 5.0 mg/kg/d. BAL fluid was assessed for cell counts and proinflammatory cytokine levels. Lung inflammation was quantified using immunohistochemical techniques and morphometric methods. Ex vivo phagocytosis assay of alveolar macrophages using PM 10 particles was performed. Distribution of PM(10) particles in lung tissues and draining lymph nodes was quantified morphometrically to evaluate the clearance of PM(10) particles. RESULTS PM(10) exposure increased the production of IL-6 and IL-8, promoted the recruitment of macrophages and polymorphonuclear leukocytes into the lung, and activated these recruited leukocytes. Lovastatin significantly suppressed all these effects. Lovastatin increased the phagocytic activity of macrophages and promoted the migration of PM 10 -laden macrophages to the regional lymph nodes. CONCLUSIONS Lovastatin attenuates the PM(10) -induced recruitment and activation of alveolar macrophages and polymorphonuclear leukocytes, reduces local proinflammatory cytokine production, and promotes the clearance of PM(10) particles from lung tissues to regional lymph nodes. These novel pleiotropic properties of statins are most likely to contribute to the downregulation of PM(10) -induced lung inflammation.
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Affiliation(s)
- Ryohei Miyata
- UBC James Hogg Research Centre, Institute for Heart + Lung Health, St. Paul's Hospital, The University of British Columbia, Vancouver, BC
| | - Ni Bai
- UBC James Hogg Research Centre, Institute for Heart + Lung Health, St. Paul's Hospital, The University of British Columbia, Vancouver, BC; Department of Anesthesiology, Pharmacology and Therapeutics, The University of British Columbia, Vancouver, BC
| | - Renaud Vincent
- Environmental Health, Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, ON, Canada
| | - Don D Sin
- UBC James Hogg Research Centre, Institute for Heart + Lung Health, St. Paul's Hospital, The University of British Columbia, Vancouver, BC
| | - Stephan F Van Eeden
- UBC James Hogg Research Centre, Institute for Heart + Lung Health, St. Paul's Hospital, The University of British Columbia, Vancouver, BC.
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Dutta A, Bhattacharya P, Lahiri T, Ray MR. Immune cells and cardiovascular health in premenopausal women of rural India chronically exposed to biomass smoke during daily household cooking. THE SCIENCE OF THE TOTAL ENVIRONMENT 2012; 438:293-298. [PMID: 23010103 DOI: 10.1016/j.scitotenv.2012.08.065] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 08/06/2012] [Accepted: 08/16/2012] [Indexed: 06/01/2023]
Abstract
Changes in cells of the immune system are important indicators of systemic response of the body to air pollution. The aim of this study was to investigate the immunological changes in rural women who have been cooking exclusively with biomass for the past 5 years or more and compare the findings with women cooking exclusively with liquefied petroleum gas (LPG). We conducted a cross-sectional analysis of the associations between indices of indoor air pollution (IAP) and a set of immune assays. Biomass users illustrated marked suppression in the total number of T-helper (CD4+) cells and B (CD19+) cells while appreciable rise was documented in the number of CD8+ T-cytotoxic cells and CD16+CD56+ natural killer (NK) cells. A consistent finding among biomass users was rise in regulatory T (Treg) cells. Among biomass users, peripheral lymphocyte subpopulations, Treg cells, and the number of typical monocytes (CD16-CD64+ cells), antigen presenting types (CD16+CD64- cells) and plasmacytoid cells (CD16-CD64- cells) were found to be significantly altered in those who daily cooked with dung in comparison to wood and crop residue users (p<0.05). Biomass users who cooked in kitchens adjacent to their living areas had significant changes in peripheral lymphocyte subpopulations, typical monocytes (CD16-CD64+) with high phagocytic activity and antigen presenting monocytes (CD16+CD64-) against women who cooked in separate kitchens (p<0.01). This study has shown that women who cooked exclusively with biomass fuel had alterations in immune defense compared with their neighbors who cooked with LPG.
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Affiliation(s)
- Anindita Dutta
- College of Environmental Sciences and Engineering, Peking University, Beijing, China.
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Banerjee A, Mondal NK, Das D, Ray MR. Neutrophilic inflammatory response and oxidative stress in premenopausal women chronically exposed to indoor air pollution from biomass burning. Inflammation 2012; 35:671-83. [PMID: 21769440 DOI: 10.1007/s10753-011-9360-2] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The possibility of inflammation and neutrophil activation in response to indoor air pollution (IAP) from biomass fuel use has been investigated. For this, 142 premenopausal, never-smoking women (median age, 34 years) who cook exclusively with biomass (wood, dung, crop wastes) and 126 age-matched control women who cook with cleaner fuel liquefied petroleum gas (LPG) were enrolled. The neutrophil count in blood and sputum was significantly higher (p < 0.05) in biomass users than the control group. Flow cytometric analysis revealed marked increase in the surface expression of CD35 (complement receptor-1), CD16 (F(C)γ receptor III), and β(2) Mac-1 integrin (CD11b/CD18) on circulating neutrophils of biomass users. Besides, enzyme-linked immunosorbent assay showed that they had 72%, 67%, and 54% higher plasma levels of the proinflammatory cytokines tumor necrosis factor-alpha, interleukin-6, and interleukin-12, respectively, and doubled neutrophil chemoattractant interleukin-8. Immunocytochemical study revealed significantly higher percentage of airway neutrophils expressing inducible nitric oxide synthase, while the serum level of nitric oxide was doubled in women who cooked with biomass. Spectrophotometric analysis documented higher myeloperoxidase activity in circulating neutrophils of biomass users, suggesting neutrophil activation. Flow cytometry showed excess generation of reactive oxygen species (ROS) by leukocytes of biomass-using women, whereas their erythrocytes contained a depleted level of antioxidant enzyme superoxide dismutase (SOD). Indoor air of biomass-using households had two to four times more particulate matter with diameters of <10 μm (PM(10)) and <2.5 μm (PM(2.5)) as measured by real-time laser photometer. After controlling potential confounders, rise in proinflammatory mediators among biomass users were positively associated with PM(10) and PM(2.5) in indoor air, suggesting a close relationship between IAP and neutrophil activation. Besides, the levels of neutrophil activation and inflammation markers were positively associated with generation of ROS and negatively with SOD, indicating a role of oxidative stress in mediating neutrophilic inflammatory response following chronic inhalation of biomass smoke.
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Affiliation(s)
- Anirban Banerjee
- Department of Experimental Hematology, Chittaranjan National Cancer Institute, 37, S. P. Mukherjee Road, Kolkata, 700 026, India
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Joo H, Park J, Lee SD, Oh YM. Comorbidities of chronic obstructive pulmonary disease in Koreans: a population-based study. J Korean Med Sci 2012; 27:901-6. [PMID: 22876057 PMCID: PMC3410238 DOI: 10.3346/jkms.2012.27.8.901] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 05/17/2012] [Indexed: 11/30/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) includes pulmonary components with increased comorbidity rates, as well as being a systemic disease. Comorbidities may frequently occur in COPD patients over 40 yr old. We report the comorbidities of patients with COPD, diagnosed by spirometry, in a population-based epidemiologic survey in Korea. Data were derived from the fourth Korean Health and Nutrition Examination Survey in 2008, a stratified multistage clustered probability design survey of a sample representing the entire population of Korea. Results of spirometry and various health-related questionnaires were analyzed in 2,177 subjects aged ≥ 40 yr. The prevalence of COPD (FEV(1)/FVC < 0.7) in subjects ≥ 40 yr of age was 14.1%. Multivariate analysis showed that underweight (odds ratio [OR] 3.07, 95% confidence interval [CI] 1.05-8.98), coronary heart disease (OR, 0.43; 95% CI, 0.20-0.93) and dyslipidemia (OR, 0.61; 95% CI, 0.45-0.82) were significantly associated with COPD, whereas allergic rhinitis, anemia, arthritis, chronic renal failure, depression, diabetes mellitus, hypertension, gastrointestinal ulcer, and osteoporosis were not. Underweight might be more prevalent but coronary heart disease and dyslipidemia are less prevalent in Koreans with than without COPD in population setting.
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Affiliation(s)
- Hyejin Joo
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jinkyeong Park
- Department of Pulmonary and Critical Care Medicine, Wonkwang University Sanbon Hospital, Gunpo, Korea
| | - Sang Do Lee
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
- Clinical Research Center for Chronic Obstructive Airway Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Yeon-Mok Oh
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
- Clinical Research Center for Chronic Obstructive Airway Disease, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Miyata R, Bai N, Vincent R, Sin DD, Van Eeden SF. Novel properties of statins: suppression of the systemic and bone marrow responses induced by exposure to ambient particulate matter (PM(10)) air pollution. Am J Physiol Lung Cell Mol Physiol 2012; 303:L492-9. [PMID: 22797249 DOI: 10.1152/ajplung.00154.2012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Exposure to ambient particulate matter (PM(10) elicits systemic inflammatory responses that include the stimulation of bone marrow and progression of atherosclerosis. The present study was designed to assess the effect of repeated exposure of PM(10) on the turnover and release of polymorphonuclear leukocytes (PMNs) from the bone marrow into the circulation and the effect of lovastatin on the PM(10)-induced bone marrow stimulation. Rabbits exposed to PM(10)three times a week for 3 wk, were given a bolus of 5'-bromo-2'-deoxyuridine to label dividing cells in the marrow to calculate the transit time of PMNs in the mitotic or postmitotic pool. PM(10) exposure accelerated the turnover of PMNs by shortening their transit time through the marrow (64.8 ± 1.9 h vs. 34.3 ± 7.4 h, P < 0.001, control vs. PM(10)). This was predominantly due to a rapid transit of PMNs through the postmitotic pool (47.9 ± 0.7 h vs. 21.3 ± 4.3 h, P < 0.001, control vs. PM(10)) but not through the mitotic pool. Lovastatin delayed the transit time of postmitotic PMNs (38.2 ± 0.5 h, P < 0.001 vs. PM(10)) and shifted the postmitotic PMN release peak from 30 h to 48 h. PM(10) exposure induced the prolonged retention of newly released PMNs in the lung, which was reduced by lovastatin (P < 0.01). PM(10) exposure increased plasma interleukin-6 levels with significant reduction by lovastatin (P < 0.01). We conclude that lovastatin downregulates the PM(10)-induced overactive bone marrow by attenuating PM(10)-induced systemic inflammatory responses.
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Affiliation(s)
- Ryohei Miyata
- UBC James Hogg Research Centre, St. Paul’s Hospital, University of British Columbia, Vancouver, UK
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Fröhlich E, Meindl C, Roblegg E, Ebner B, Absenger M, Pieber TR. Action of polystyrene nanoparticles of different sizes on lysosomal function and integrity. Part Fibre Toxicol 2012; 9:26. [PMID: 22789069 PMCID: PMC3425083 DOI: 10.1186/1743-8977-9-26] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Accepted: 07/12/2012] [Indexed: 11/19/2022] Open
Abstract
Background Data from environmental exposure to nanoparticles (NPs) suggest that chronic exposure may increase the incidence of lung, cardiovascular and neurodegenerative diseases. Impairment of cell function by intracellular accumulation of NPs is also suspected. Many types of NPs have been detected in the endosomal-lysosomal system and, upon repeated exposure, alterations of the endosomal-lysosomal system may occur. To identify such effects we compared the effect of carboxyl polystyrene particles (CPS) of different sizes (20-500 nm) on lysosomes of the endothelial cell line EAhy926 after short (24h) and long (72h-96h) exposure times. Lysosomal localization of CPS, as well as lysosomal pH, lysosomal membrane integrity, morphology of the endosomal-lysosomal system and activities of the lysosomal enzymes,cathepsin B and sulfatases, upon exposure to CPS were recorded. Results CPS in sizes ≤100 nm showed high co-localization with lysosomes already after 4h, larger CPS after 24h. None of the particles at non-cytotoxic concentrations caused marked changes in lysosomal pH or destroyed lysosomal membrane integrity. At 24h of exposure, 20 nm CPS induced significant dilatation of the endosomal-lysosomal system and reduced activity of lysosomal sulfatases. After 72h, these alterations were less pronounced. Conclusions Despite accumulation in lysosomes CPS induced only small changes in lysosomes. Upon longer contact, these changes are even less pronounced. The presented panel of assays may serve to identify effects on lysosomes also for other NPs.
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Cheraghi M, Dadgarinejad A, Salvi S. A Cross-Sectional Study to Find Prevalence and Risk Factors for Childhood Asthma in Pune City, India. ACTA ACUST UNITED AC 2012. [DOI: 10.5402/2012/361456] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We aimed to determine current prevalence of asthma and risk factors associated with it in Pune, India. Methods. This was a cross-sectional school-population-based study in which parents of school children aged 6-7 and 13-14 were administered an ISAAC questionnaire and an additional set of questions that detected the presence of potential risk factors known to be associated with asthma during 2008-2009 academic years. Results. Prevalence of current asthma was 6.7% (7% amongst 6-7-year olds and 6.3% amongst 13-14 year olds. Asthma was more common amongst boys (8.1%) than girls (4.9%) and more frequent in students studying in private schools (7.3%) than in those studying in public schools (5.8%). Risk factors such as family history of atopy, caesarian delivery, use of biomass fuel for cooking, absence of separate kitchen, absence of exclusive breastfeeding during the first 6 months of life, preterm birth, snoring, dampness at home, male sex, and parental smoking were significantly associated with asthma. Conclusion. There was a high prevalence of childhood asthma in Pune, India, which was associated with genetic and environmental risk factors.
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Affiliation(s)
- Maria Cheraghi
- Department of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Miyata R, van Eeden SF. The innate and adaptive immune response induced by alveolar macrophages exposed to ambient particulate matter. Toxicol Appl Pharmacol 2011; 257:209-26. [PMID: 21951342 DOI: 10.1016/j.taap.2011.09.007] [Citation(s) in RCA: 171] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Revised: 08/09/2011] [Accepted: 09/08/2011] [Indexed: 12/16/2022]
Abstract
Emerging epidemiological evidence suggests that exposure to particulate matter (PM) air pollution increases the risk of cardiovascular events but the exact mechanism by which PM has adverse effects is still unclear. Alveolar macrophages (AM) play a major role in clearing and processing inhaled PM. This comprehensive review of research findings on immunological interactions between AM and PM provides potential pathophysiological pathways that interconnect PM exposure with adverse cardiovascular effects. Coarse particles (10 μm or less, PM(10)) induce innate immune responses via endotoxin-toll-like receptor (TLR) 4 pathway while fine (2.5 μm or less, PM(2.5)) and ultrafine particles (0.1 μm or less, UFP) induce via reactive oxygen species generation by transition metals and/or polyaromatic hydrocarbons. The innate immune responses are characterized by activation of transcription factors [nuclear factor (NF)-κB and activator protein-1] and the downstream proinflammatory cytokine [interleukin (IL)-1β, IL-6, and tumor necrosis factor-α] production. In addition to the conventional opsonin-dependent phagocytosis by AM, PM can also be endocytosed by an opsonin-independent pathway via scavenger receptors. Activation of scavenger receptors negatively regulates the TLR4-NF-κB pathway. Internalized particles are subsequently subjected to adaptive immunity involving major histocompatibility complex class II (MHC II) expression, recruitment of costimulatory molecules, and the modulation of the T helper (Th) responses. AM show atypical antigen presenting cell maturation in which phagocytic activity decreases while both MHC II and costimulatory molecules remain unaltered. PM drives AM towards a Th1 profile but secondary responses in a Th1- or Th-2 up-regulated milieu drive the response in favor of a Th2 profile.
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Affiliation(s)
- Ryohei Miyata
- The James Hogg iCAPTURE Centre, University of British Columbia, St. Paul's Hospital, 1081 Burrard Street, Vancouver, BC, Canada
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Kido T, Bai N, Yatera K, Suzuki H, Meredith A, Mukae H, Rosenfeld ME, van Eeden SF. Diesel exhaust inhalation induces heat shock protein 70 expression in vivo. Inhal Toxicol 2011; 23:593-601. [PMID: 21848409 DOI: 10.3109/08958378.2011.595843] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Exposure to urban air pollution is an independent risk factor for increased cardiovascular diseases. Heat shock protein 70 (HSP70) has been implicated in the pathogenesis of vascular dysfunction and cardiovascular diseases. This study has been designed to determine whether inhalation of urban air induces HSP70 expression in the lung and blood as well as the association of HSP70 and air pollution-induced vascular dysfunction. Apolipoprotein E (Apo-E) deficient mice were exposed to diesel exhaust (DE) either acutely (3 days, 200 or 400 µg/m(3) for 6 h/day) or chronically (7 weeks, 200 or 400 µg/m(3) for 6 h/day). HSP70 was measured in the lung using immunohistochemistry, and in the plasma by ELISA. Abdominal aorta rings were used to determine vascular functional responses. Chronic DE-exposure increased the fraction of HSP70 positive alveolar macrophages (AM) that was related to the fraction of particle-laden AM in the lung (r(2) = 0.48, p <0.01). Chronic DE-exposure increased plasma HSP70 levels and reduced blood vessel responses to phenylephrine (PE). The fraction of particle-laden HSP70 positive AM was associated with abnormal vasoconstriction responses to PE induced by DE-exposure (r(2) = 0.12, p = 0.02). Our results show that chronic inhalation of DE increases HSP70 expression in the lung and systemic circulation, and we postulate that HSP70 possibly contributes to air pollution induced vascular dysfunction and cardiovascular diseases.
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Affiliation(s)
- Takashi Kido
- The James Hogg iCAPTURE Centre for Cardiovascular and Pulmonary Research, University of British Columbia, St. Paul's Hospital, Vancouver, British Columbia, Canada
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Exercise and leukocyte interchange among central circulation, lung, spleen, and muscle. Brain Behav Immun 2011; 25:658-66. [PMID: 21238578 PMCID: PMC4666294 DOI: 10.1016/j.bbi.2011.01.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 12/17/2010] [Accepted: 01/06/2011] [Indexed: 12/21/2022] Open
Abstract
Circulating leukocytes increase rapidly with exercise then quickly decrease when the exercise ends. We tested whether exercise acutely led to bidirectional interchange of leukocytes between the circulation and the lung, spleen, and active skeletal muscle. To accomplish this it was necessary to label a large number of immune cells (granulocytes, monocytes, and lymphocytes) in a way that resulted in minimal perturbation of cell function. Rats were injected intravenously with a single bolus of carboxyfluorescein diacetate succinamidyl ester (CFSE) dye which is rapidly and irreversibly taken up by circulating cells. The time course of the disappearance of labeled cells and their reappearance in the circulation following exercise was determined via flow cytometry. The majority of circulating leukocytes were labeled at 4h. post-injection and this proportion slowly declined out to 120 h. At both 24 and 120 h, running resulted in an increase in the proportion of labeled leukocytes in the circulation. Analysis of the skeletal muscle, spleen and lung indicated that labeled leukocytes had accumulated in those tissues and were mobilized to the circulation in response to exercise. This indicates that there is an ongoing exchange of leukocytes between the circulation and tissues and that exercise can stimulate their redistribution. Exchange was slower with muscle than with spleen and lung, but in all cases, influenced by exercise. Exercise bouts redistribute leukocytes between the circulation and the lung, spleen and muscle. The modulatory effects of exercise on the immune system may be regulated in part by the systemic redistribution of immune cells.
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Ultrastructural changes in atherosclerotic plaques following the instillation of airborne particulate matter into the lungs of rabbits. Can J Cardiol 2010; 26:e258-69. [PMID: 20847974 DOI: 10.1016/s0828-282x(10)70422-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Epidemiological studies have established that cardiovascular events account for the greatest number of air pollution-related deaths. However, the underlying structural changes are still unknown. OBJECTIVE To investigate changes in the ultrastructure of atherosclerotic plaques in Watanabe heritable hyperlipidemic (WHHL) rabbits following the instillation of ambient particulate matter air pollution (particles smaller than 10 µm in diameter) into the lungs. METHODS WHHL rabbits (n=8) exposed to 5 mg of ambient particles (Environmental Health Centre - 1993 [EHC-93]; suspended in saline and instilled in the airway) twice per week for four weeks were compared with control WHHL rabbits (n=8) treated with saline alone. RESULTS All abdominal aortic plaques were examined using light and electron microscopy, which showed the following: increased accumulation of macrophage-derived foam cells immediately below the endothelial plaque surface (P=0.04); increased contact between these foam cells and the dense subendothelial extracellular matrix (P<0.005) with reduction (P<0.0001) and fragmentation (P<0.0001) of this matrix; and emigration of macrophage- derived foam cells from the plaques in exposed rabbits. In addition, immunohistochemistry verified the presence of type IV collagen in the thickened extracellular matrix material subtending the endothelium. CONCLUSIONS The ultrastructure of atherosclerotic plaques in EHC-93- instilled rabbits differed from the ultrastructure observed in rabbits that did not receive EHC-93. These ultrastructural differences are consistent with greater endothelial instability in the plaques of atherosclerosis-prone rabbits.
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Liping Jiang, Hong Dai, Qinghua Sun, Chengyan Geng, Yue Yang, Tao Wu, Xiaoou Zhang, Laifu Zhong. Ambient particulate matter on DNA damage in HepG2 cells. Toxicol Ind Health 2010; 27:87-95. [PMID: 20947658 DOI: 10.1177/0748233710387001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ambient particulate matter (PM) has been reported to be associated with increased respiratory, cardiovascular, and malignant lung diseases. The aim of the present study was to investigate the variability of the DNA-damage induced by thoracic particles (PM( 10)) sampled in different locations and seasons (2006) in Dalian, China, in human hepatoma G2 (HepG2) cells. Significant differences in percentage of tail DNA induced by the extractable organic matter of PM(10) were revealed between summer and winter seasons and among monitoring sites in single cell gel electrophoresis (SCGE) assay. The percentage of tail DNA in HepG2 cells significantly increased in a dose-dependent manner after exposure to 7.5 and 30 μg/mL extractable organic matter of PM(10) for 1 hour. In order to clarify the underlying mechanisms, we evaluated the level of reactive oxygen species (ROS) production with the 2, 7-dichloro-fluorescein diacetate (DCFH-DA) assay. Significantly increased level of ROS was observed in HepG2 cells at higher concentrations (15 and 30 μg/mL). Significantly increased levels of 8-hydroxydeoxyguanosine (8-OHdG) were also shown in HepG2 cells. In this study, the accumulation of nuclear factor kappa B (NF-κB) p65 protein induced by the extractable organic matter of PM(10) was detected by western blotting in HepG2 cells, and the protein expression of NF-κB p65 significantly increased after the treatment with 30 μg/mL extractable organic matter of PM(10) for 24 hours. These results indicate that the extractable organic matter of PM(10) causes DNA strand breaks in HepG2 cells, and significant differences in percentage of tail DNA in dependence on locality and season are revealed. The extractable organic matter of PM(10) exerts DNA damage effects in HepG2 cells, probably through oxidative DNA damage induced by intracellular ROS, increase of 8-OHdG formation, and protein expression of NF-κB p65.
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Affiliation(s)
- Liping Jiang
- China-Japanese Joint Institute for Medical and Pharmaceutical Science, Dalian Medical University, West Segment of South Lvshun Road, Dalian, Liaoning, China
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Chen LC, Quan C, Hwang JS, Jin X, Li Q, Zhong M, Rajagopalan S, Sun Q. Atherosclerosis lesion progression during inhalation exposure to environmental tobacco smoke: a comparison to concentrated ambient air fine particles exposure. Inhal Toxicol 2010; 22:449-59. [PMID: 20235771 DOI: 10.3109/08958370903373845] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Environmental tobacco smoke (ETS) and ambient air fine particulate matter (PM(2.5)) are both complex mixtures that have important adverse effects on the cardiovascular system. Although exposures to these complex mixtures have been studied individually, direct comparisons between the two has not been performed. In this study, the authors employed a novel, noninvasive ultrasound biomicroscopy method (UBM) to assess the effects of long-term, low-concentration inhalations of side-stream smoke (SS) and concentrated ambient PM(2.5) (CAPs) on plaque progression. ApoE(-/-) mice (n = 8/group) on high-fat chow (HFC), or normal chow (NC), were exposed to SS (PM = 450 microg/m(3)) or filtered air (FA) for 6 h/day, 5 days/week, for 6 months; CAPs exposure was at 134 microg/m(3) (NC only). Mortality during the SS exposure was greater in the HFC than in the NC, and SS significantly enhanced the effects of diet. No mortality was observed in CAPs-exposed mice. At 4 and 6 months, SS produced the greatest change in plaque area in the left common carotid artery (CCA) in HFC as compared to FA or NC, but not in the brachiocephalic artery. In contrast, CAPs exposure significantly enhanced plaque areas in brachiocephalic and left CCA at 3 and 6 months of exposure. The effect of SS was comparable in magnitude to that produced by CAPs at an average PM(2.5) mass concentration that was only 30% as high. In light of the employment of the same animal model, uniform inhalation exposure protocols, time schedules, a noninvasive monitoring protocol, and a parallel study design, these findings have broad applicability.
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Affiliation(s)
- Lung Chi Chen
- Department of Environmental Medicine, New York University School of Medicine, Tuxedo, New York 10987, USA.
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Brito JM, Belotti L, Toledo AC, Antonangelo L, Silva FS, Alvim DS, Andre PA, Saldiva PHN, Rivero DHRF. Acute Cardiovascular and Inflammatory Toxicity Induced by Inhalation of Diesel and Biodiesel Exhaust Particles. Toxicol Sci 2010; 116:67-78. [DOI: 10.1093/toxsci/kfq107] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Jung DH, Shim JY, Ahn HY, Lee HR, Lee JH, Lee YJ. Relationship of body composition and C-reactive protein with pulmonary function. Respir Med 2010; 104:1197-203. [PMID: 20299196 DOI: 10.1016/j.rmed.2010.02.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2009] [Revised: 02/16/2010] [Accepted: 02/17/2010] [Indexed: 12/20/2022]
Abstract
OBJECTIVES It has been observed that restrictive pulmonary function is associated with obesity and C-reactive protein (CRP), an indicator for systemic inflammation. However, the interrelationship among body composition, CRP, and restrictive pulmonary function has been poorly understood. This study focused on the combined effects of body composition and CRP on restrictive pulmonary function. METHODS We performed a cross-sectional study to examine the association of body composition and CRP with restrictive pulmonary function in 12,787 subjects (7083 men, 5704 women; ages 20-75 yr). We evaluated body composition and CRP as a categorical variable (non-obesity, percentage body fat 75 percentile; low-inflammation, CRP 75 percentile) and constructed 4 groups, which were non-overlapping (reference, inflammatory, obese, obese and inflammatory). The odds ratios (ORs) and 95% confidence intervals (CIs) for restrictive pulmonary function were calculated across all 4 groups. RESULTS The adjusted ORs (95% CIs) for restrictive pulmonary function according to the 4 groups were 1.00(reference), 1.19(0.93-1.52), 2.01(1.53-2.64) and 3.51(2.60-4.74) in men and 1.00 (reference), 1.26 (0.96-1.69), 1.02 (0.58-1.81), and 3.32 (2.09-5.27) in women after adjusting for confounding variables. Interaction was found between the body fat percentage and CRP in women only (P < 0.05). CONCLUSIONS In summary, the coexistence of high fat accumulation and systemic subclinical inflammation is associated with restrictive pulmonary function.
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Affiliation(s)
- Dong-Hyuk Jung
- Department of Family Medicine, Yonsei University College of Medicine, Seoul, Korea
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Jacobs L, Emmerechts J, Mathieu C, Hoylaerts MF, Fierens F, Hoet PH, Nemery B, Nawrot TS. Air pollution related prothrombotic changes in persons with diabetes. ENVIRONMENTAL HEALTH PERSPECTIVES 2010; 118:191-6. [PMID: 20123602 PMCID: PMC2831916 DOI: 10.1289/ehp.0900942] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2009] [Accepted: 10/22/2009] [Indexed: 05/03/2023]
Abstract
BACKGROUND Population studies suggest that persons with diabetes are more sensitive to the effects of particulate matter (PM) air pollution. However, the biological mechanisms of a possible prothrombotic effect underlying this enhanced susceptibility remain largely unknown. OBJECTIVE We hypothesized that exposure to PM causes prothrombotic changes in persons with diabetes, possibly via systemic inflammation. METHODS Our study included 137 nonsmoking adults with diabetes who were outpatients at the University Hospital Leuven. Recent exposure (2 hr before examination) to ambient PM was measured at the entrance of the hospital. Individual chronic exposure to PM was assessed by measuring the area occupied by carbon in airway macrophages obtained by sputum induction. Platelet function was measured ex vivo with the PFA-100 platelet function analyzer, which simulates a damaged blood vessel; we analyzed the function of platelets in primary hemostasis under high shear conditions. Total and differential blood leukocytes were counted. RESULTS Independent of antiplatelet medication, an interquartile range (IQR) increase of 39.2 microg/m3 in PM10 (PM with aerodynamic diameter <or= 10 microm) concentration measured 2 hr before the clinical examination (recent exposure) was associated with a decrease of 21.1 sec [95% confidence interval (CI), 35.3 to 6.8] in the PFA-100 closure time (i.e., increased platelet activation) and an increase in blood leukocytes of 512 per microliter of blood (95% CI, 45.2979). Each area increase of 0.25 microm2 (IQR) in carbon load of airway macrophages (chronic exposure) was associated with an increase of 687 leukocytes per microliter of blood (95% CI, 2241,150). CONCLUSIONS A relevant increase in recent PM exposure was associated with a change in platelet function toward a greater prothrombotic tendency. The magnitude of the change was about two-thirds (in the opposite direction) of the average effect of antiplatelet medication. Diabetic patients showed evidence of proinflammatory response to both recent and chronic exposure to PM air pollution.
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Affiliation(s)
- Lotte Jacobs
- Occupational and Environmental Medicine, Unit of Lung Toxicology
| | | | - Chantal Mathieu
- Department of Endocrinology, Katholique Universiteit Leuven, Leuven, Belgium
| | | | - Frans Fierens
- Belgian interregional Environment Agency, Brussels, Belgium
| | - Peter H. Hoet
- Occupational and Environmental Medicine, Unit of Lung Toxicology
| | - Benoit Nemery
- Occupational and Environmental Medicine, Unit of Lung Toxicology
- Address correspondence to B. Nemery, K.U. Leuven, Occupational and Environmental Medicine and Pneumology, Unit of Lung Toxicology, Herestraat 49 (O&N 706), B-3000 Leuven, Belgium. Telephone: 32-16-347121. Fax: 32-16-347124. E-mail:
| | - Tim S. Nawrot
- Occupational and Environmental Medicine, Unit of Lung Toxicology
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
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Delfino RJ. Do endotoxin and air pollution have a synergistic relationship to asthma onset or exacerbation? Am J Respir Crit Care Med 2009; 180:1037-8. [PMID: 19923399 DOI: 10.1164/rccm.200908-1285ed] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Huertas A, Testa U, Riccioni R, Petrucci E, Riti V, Savi D, Serra P, Bonsignore MR, Palange P. Bone marrow-derived progenitors are greatly reduced in patients with severe COPD and low-BMI. Respir Physiol Neurobiol 2009; 170:23-31. [PMID: 19895908 DOI: 10.1016/j.resp.2009.10.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Revised: 10/02/2009] [Accepted: 10/05/2009] [Indexed: 01/08/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) patients have reduced circulating hemopoietic progenitors. We hypothesized that severity of COPD parallels the decrease in progenitors and that the reduction in body mass index (BMI) could be associated with more severe bone marrow dysfunction. We studied 39 patients with moderate to very severe COPD (18 with low-BMI and 21 with normal-BMI) and 12 controls. Disease severity was associated to a greater reduction in circulating progenitors. Proangiogenetic and inflammatory markers correlated with disease severity parameters. Compared to normal-BMI patients, low-BMI patients showed: greater reduction in circulating progenitors; higher VEGF-A, VEGF-C, HGF, Ang-2, TNF-alpha, IL-6 and MCP-1 levels. Furthermore, among patients with similar pulmonary impairment, those who displayed low-BMI had a more markedly reduced number of CD34(+) cells and late endothelial progenitors. We show that the reduction in hematopoietic and endothelial progenitor cells correlates with COPD severity. Our findings also indicate that, in severe low-BMI COPD patients, bone marrow function seems to be further impaired and may lead to reduced reparative capacity.
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Affiliation(s)
- Alice Huertas
- Department of Clinical Medicine, La Sapienza University, Rome, Italy
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Eder C, Frankenberger M, Stanzel F, Seidel A, Schramm KW, Ziegler-Heitbrock L, Hofer TP. Ultrafine carbon particles down-regulate CYP1B1 expression in human monocytes. Part Fibre Toxicol 2009; 6:27. [PMID: 19835593 PMCID: PMC2770025 DOI: 10.1186/1743-8977-6-27] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2009] [Accepted: 10/16/2009] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Cytochrome P450 monoxygenases play an important role in the defence against inhaled toxic compounds and in metabolizing a wide range of xenobiotics and environmental contaminants. In ambient aerosol the ultrafine particle fraction which penetrates deeply into the lungs is considered to be a major factor for adverse health effects. The cells mainly affected by inhaled particles are lung epithelial cells and cells of the monocyte/macrophage lineage. RESULTS In this study we have analyzed the effect of a mixture of fine TiO2 and ultrafine carbon black Printex 90 particles (P90) on the expression of cytochrome P450 1B1 (CYP1B1) in human monocytes, macrophages, bronchial epithelial cells and epithelial cell lines. CYP1B1 expression is strongly down-regulated by P90 in monocytes with a maximum after P90 treatment for 3 h while fine and ultrafine TiO2 had no effect. CYP1B1 was down-regulated up to 130-fold and in addition CYP1A1 mRNA was decreased 13-fold. In vitro generated monocyte-derived macrophages (MDM), epithelial cell lines, and primary bronchial epithelial cells also showed reduced CYP1B1 mRNA levels. Benzo[a]pyrene (BaP) is inducing CYB1B1 but ultrafine P90 can still down-regulate gene expression at 0.1 muM of BaP. The P90-induced reduction of CYP1B1 was also demonstrated at the protein level using Western blot analysis. CONCLUSION These data suggest that the P90-induced reduction of CYP gene expression may interfere with the activation and/or detoxification capabilities of inhaled toxic compounds.
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Affiliation(s)
- Christiane Eder
- Helmholtz Zentrum Muenchen, German Research Center for Environmental Health, Clinical Cooperation Group Inflammatory Lung Diseases, Institute of Lung Biology and Disease and Asklepios Fachkliniken Muenchen-Gauting, Robert-Koch-Allee 29, 82131 Gauting, Germany.
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Kwon JT, Kim DS, Minai-Tehrani A, Hwang SK, Chang SH, Lee ES, Xu CX, Lim HT, Kim JE, Yoon BI, An GH, Lee KH, Lee JK, Cho MH. Inhaled fluorescent magnetic nanoparticles induced extramedullary hematopoiesis in the spleen of mice. J Occup Health 2009; 51:423-31. [PMID: 19706996 DOI: 10.1539/joh.l8159] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES Nanomaterials are used in a wide variety of industrial materials such as semiconductors, magnetic resonance imaging, gene delivery carriers for gene therapy and many others; thus, human seems to be frequently exposed to them. Such diverse applications of nanoparticles elicit the need to identify the positive aspects of nanomaterials while avoiding the potential toxic effects. In this study, inhalation toxicity of manufactured nanomaterials using fluorescent magnetic nanoparticles (FMNPs) was assessed to address the issue of potential nanoparticle toxicity. METHODS Biological samples from a previous mouse FMNP exposure experiment were analyzed for potential FMNP toxicity. Mice inhaled FMNPs for 4 wk through a nose-only exposure chamber developed by our group for 4 wk and the potential toxicity of FMNPs was analyzed. RESULTS The nanoparticle distribution by scanning mobility particle sizer (SMPS) analysis showed that the mean values of number concentration (mass concentrations) in the nose-only exposure chamber were maintained at 4.89 x 10(5)/cm3 (approximately 159.4 microg/m3) for the low concentration and 9.34 x 10(5)/cm3 (approximately 319.5 microg/m3) for the high concentration, respectively. Inhalation of FMNPs caused a decrease of body weight and significant changes of white blood cells (WBCs) levels in whole blood. The FMNPs induced extramedullary hematopoiesis in the spleen without having a pulmonary effect. CONCLUSIONS Our results support the proposition that extensive toxicity evaluation is needed for practical applications of anthropogenic nanomaterials and suggest that careful regulation of nanoparticle applications may be necessary to maintain a high quality of life as well as for facilitating the development of nanotechnology.
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Affiliation(s)
- Jung-Taek Kwon
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Korea
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Delfino RJ, Staimer N, Tjoa T, Gillen DL, Polidori A, Arhami M, Kleinman MT, Vaziri ND, Longhurst J, Sioutas C. Air pollution exposures and circulating biomarkers of effect in a susceptible population: clues to potential causal component mixtures and mechanisms. ENVIRONMENTAL HEALTH PERSPECTIVES 2009; 117:1232-8. [PMID: 19672402 PMCID: PMC2721866 DOI: 10.1289/ehp.0800194] [Citation(s) in RCA: 199] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2008] [Accepted: 04/29/2009] [Indexed: 05/17/2023]
Abstract
BACKGROUND Mechanisms involving oxidative stress and inflammation have been proposed to explain associations of ambient air pollution with cardiovascular morbidity and mortality. Experimental evidence suggests that organic components and ultrafine particles (UFP) are important. METHODS We conducted a panel study of 60 elderly subjects with coronary artery disease living in retirement communities within the Los Angeles, California, air basin. Weekly biomarkers of inflammation included plasma interleukin-6, tumor necrosis factor-alpha soluble receptor II (sTNF-RII), soluble platelet selectin (sP-selectin), and C-reactive protein (CRP). Biomarkers of erythrocyte antioxidant activity included glutathione peroxidase-1 and superoxide dismutase. Exposures included outdoor home daily particle mass [particulate matter < 0.25, 0.25-2.5, and 2.5-10 microm in aerodynamic diameter (PM(0.25), PM(0.25-2.5), PM(2.5-10))], and hourly elemental and black carbon (EC-BC), estimated primary and secondary organic carbon (OC(pri), SOC), particle number (PN), carbon monoxide (CO), and nitrogen oxides-nitrogen dioxide (NO(x)-NO(2)). We analyzed the relation of biomarkers to exposures with mixed effects models adjusted for potential confounders. RESULTS Primary combustion markers (EC-BC, OC(pri), CO, NO(x)-NO(2)), but not SOC, were positively associated with inflammatory biomarkers and inversely associated with erythrocyte anti-oxidant enzymes (n = 578). PN and PM(0.25) were more strongly associated with biomarkers than PM(0.25-2.5). Associations for all exposures were stronger during cooler periods when only OC(pri), PN, and NO(x) were higher. We found weaker associations with statin (sTNF-RII, CRP) and clopidogrel use (sP-selectin). CONCLUSIONS Traffic-related air pollutants are associated with increased systemic inflammation, increased platelet activation, and decreased erythrocyte antioxidant enzyme activity, which may be partly behind air pollutant-related increases in systemic inflammation. Differences in association by particle size, OC fraction, and seasonal period suggest components carried by UFP are important.
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Affiliation(s)
- Ralph J Delfino
- Department of Epidemiology, School of Medicine, University of California, Irvine, Irvine, California 92617, USA.
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Hart JE, Laden F, Puett RC, Costenbader KH, Karlson EW. Exposure to traffic pollution and increased risk of rheumatoid arthritis. ENVIRONMENTAL HEALTH PERSPECTIVES 2009; 117:1065-9. [PMID: 20049118 PMCID: PMC2717131 DOI: 10.1289/ehp.0800503] [Citation(s) in RCA: 162] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Accepted: 03/04/2009] [Indexed: 05/03/2023]
Abstract
BACKGROUND Rheumatoid arthritis (RA) is a chronic systemic inflammatory disease that affects approximately 1% of the adult population, and to date, genetic factors explain < 50% of the risk. Particulate air pollution, especially of traffic origin, has been linked to systemic inflammation in many studies. OBJECTIVES We examined the association of distance to road, a marker of traffic pollution exposure, and incidence of RA in a prospective cohort study. METHODS We studied 90,297 U.S. women in the Nurses' Health Study. We used a geographic information system to determine distance to road at the residence in 2000 as a measure of traffic exposure. Using Cox proportional hazard models, we examined the association of distance to road and incident RA (1976-2004) with adjustment for a large number of potential confounders. RESULTS In models adjusted for age, calendar year, race, cigarette smoking, parity, lactation, menopausal status and hormone use, oral contraceptive use, body mass index, physical activity, and census-tract-level median income and house value, we observed an elevated risk of RA [hazard ratio (HR) = 1.31; 95% confidence interval (CI), 0.98-1.74] in women living within 50 m of a road, compared with those women living 200 m or farther away. We also observed this association in analyses among nonsmokers (HR = 1.62; 95% CI, 1.04-2.52), nonsmokers with rheumatoid factor (RF)-negative RA (HR = 1.77; 95% CI, 0.93-3.38), and nonsmokers with RF-positive RA (HR = 1.51; 95% CI, 0.82-2.77). We saw no elevations in risk in women living 50-200 m from the road. CONCLUSIONS The observed association between exposure to traffic pollution and RA suggests that pollution from traffic in adulthood may be a newly identified environmental risk factor for RA.
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Affiliation(s)
- Jaime E. Hart
- Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA
| | - Francine Laden
- Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA
- Exposure, Epidemiology, and Risk Program, Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA
| | - Robin C. Puett
- South Carolina Cancer Prevention and Control Program, University of South Carolina, Columbia, South Carolina, USA
- Departments of Environmental Health Sciences and Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA
| | - Karen H. Costenbader
- Division of Rheumatology, Immunology, and Allergy, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Elizabeth W. Karlson
- Division of Rheumatology, Immunology, and Allergy, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Address correspondence to E.W. Karlson, 75 Francis St., Boston, MA 02115 USA. Telephone: (617) 732-5078. Fax: (617) 731-9032. E-mail:
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Polichetti G, Cocco S, Spinali A, Trimarco V, Nunziata A. Effects of particulate matter (PM(10), PM(2.5) and PM(1)) on the cardiovascular system. Toxicology 2009; 261:1-8. [PMID: 19379789 DOI: 10.1016/j.tox.2009.04.035] [Citation(s) in RCA: 142] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2009] [Revised: 04/08/2009] [Accepted: 04/13/2009] [Indexed: 02/08/2023]
Abstract
Several studies have demonstrated that exposure to particulate matter (PM) of different size fractions is associated with an increased risk of cardiovascular disease (CVD). In this review, we have taken into consideration the possible correlation between the "short term" and "long term" effects of PM exposure and the onset of CVDs as well as the possible molecular mechanisms by which PM elicits the development of these events. Particularly, it is here underlined that these adverse health effects depend not only on the level of PM concentration in the air but also on its particular internal composition. Furthermore, we have also synthesized the findings gleaned from those few studies indicating that PM produced by tobacco smoke can give rise to cardiovascular injury.
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Affiliation(s)
- Giuliano Polichetti
- Department of Neuroscience, School of Medicine, Federico II University of Naples, Via S. Pansini 5, 80131 Naples, Italy.
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Abstract
BACKGROUND The roles of weather conditions and air pollution as triggers of headache have been inconsistent in previous, generally small studies. METHODS We performed a case-crossover study of 7,054 patients seen in a single emergency department between May 2000 and December 2007 with a primary discharge diagnosis of headache. We compared levels of temperature, barometric pressure, humidity, fine particulate matter, black carbon, and nitrogen and sulfur dioxides during the three 24-hour periods preceding presentation with corresponding levels on the remaining occurrences of that day of the week in a given month, using local meteorologic and pollutant monitors. RESULTS Higher mean ambient temperature in the 24 hours preceding hospital presentation positively and linearly increased the acute risk of headache (odds ratio [OR] for a 5 degrees C increment 1.075; 95% confidence interval [CI], 1.021-1.133; p = 0.006) [corrected]. Higher risk was observed for cases with and without a discharge diagnosis of migraine and for cases between October and March or between April and September. Lower barometric pressure also increased the risk of nonmigraine cases in the 48 to 72 hours before hospitalization (OR 0.939 per 5 mm Hg; 95% CI, 0.902-0.978; p = 0.002). Current levels of pollutants did not influence the risk of headache. CONCLUSIONS Higher ambient temperature and, to a lesser degree, lower barometric pressure led to a transient increase in risk of headache requiring emergency department evaluation. We did not find clear association of air pollutants with risk, but cannot exclude effects of air pollution of the magnitude previously observed for stroke and other cardiovascular events.
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Affiliation(s)
- Kenneth J Mukamal
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA.
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Sandhu RS, Petroni DH, George WJ. Ambient Particulate Matter, C-Reactive Protein, and Coronary Artery Disease. Inhal Toxicol 2008; 17:409-13. [PMID: 16020037 DOI: 10.1080/08958370590929538] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This article is a review of the scientific literature with respect to fine particulate matter (PM), 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitors, and coronary artery disease (CAD). The association between air pollution and respiratory diseases has been extensively investigated for decades; however, the role of air pollution in exacerbating heart disease has only recently become a focus of attention. It has been shown that for every 10-microg/m(3) increase in fine PM in the air, there appears to be a 2.1% increase in the number of deaths related to ischemic heart disease. PM has been linked to increased levels of systemic inflammation biomarkers such as C-reactive proteins (CRP). Daily variation of ambient pollution is correlated with rises and falls in CRP levels. Increased CRP levels have been associated with increased morbidity and mortality in individuals with CAD. Seventy-five percent of patients with elevated CRP levels have reportedly experienced a major cardiac event despite low-density lipoproteins (LDL) levels that were below the threshold recommended for pharmacological intervention. HMG CoA reductase inhibitors (statins) have been shown to cause a reduction in coronary events by lowering LDL levels. However, recently it has been shown that statins have the effect of lowering CRP levels. This may explain why individuals with normal lipid levels may benefit from statin therapy. Ambient PM exposure levels and its effects on CRP are risk factors associated with coronary events and should be considered as a target for the treatment of CAD.
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Affiliation(s)
- Ripple S Sandhu
- Department of Pharmacology, Division of Toxicology, Tulane University School of Medicine, New Orleans, Louisiana 70112, USA
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Tamagawa E, Bai N, Morimoto K, Gray C, Mui T, Yatera K, Zhang X, Xing L, Li Y, Laher I, Sin DD, Man SFP, van Eeden SF. Particulate matter exposure induces persistent lung inflammation and endothelial dysfunction. Am J Physiol Lung Cell Mol Physiol 2008; 295:L79-85. [PMID: 18469117 DOI: 10.1152/ajplung.00048.2007] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Epidemiologic and animal studies have shown that exposure to particulate matter air pollution (PM) is a risk factor for the development of atherosclerosis. Whether PM-induced lung and systemic inflammation is involved in this process is not clear. We hypothesized that PM exposure causes lung and systemic inflammation, which in turn leads to vascular endothelial dysfunction, a key step in the initiation and progression of atherosclerosis. New Zealand White rabbits were exposed for 5 days (acute, total dose 8 mg) and 4 wk (chronic, total dose 16 mg) to either PM smaller than 10 mum (PM(10)) or saline intratracheally. Lung inflammation was quantified by morphometry; systemic inflammation was assessed by white blood cell and platelet counts and serum interleukin (IL)-6, nitric oxide, and endothelin levels. Endothelial dysfunction was assessed by vascular response to acetylcholine (ACh) and sodium nitroprusside (SNP). PM(10) exposure increased lung macrophages (P<0.02), macrophages containing particles (P<0.001), and activated macrophages (P<0.006). PM(10) increased serum IL-6 levels in the first 2 wk of exposure (P<0.05) but not in weeks 3 or 4. PM(10) exposure reduced ACh-related relaxation of the carotid artery with both acute and chronic exposure, with no effect on SNP-induced vasodilatation. Serum IL-6 levels correlated with macrophages containing particles (P=0.043) and ACh-induced vasodilatation (P=0.014 at week 1, P=0.021 at week 2). Exposure to PM(10) caused lung and systemic inflammation that were both associated with vascular endothelial dysfunction. This suggests that PM-induced lung and systemic inflammatory responses contribute to the adverse vascular events associated with exposure to air pollution.
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Affiliation(s)
- Eiji Tamagawa
- Division of Respiratory Medicine, University of British Columbia and James Hogg iCAPTURE Center for Cardiovascular and Pulmonary Research, St. Paul's Hospital, Vancouver, British Columbia, Canada
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Yatera K, Hsieh J, Hogg JC, Tranfield E, Suzuki H, Shih CH, Behzad AR, Vincent R, van Eeden SF. Particulate matter air pollution exposure promotes recruitment of monocytes into atherosclerotic plaques. Am J Physiol Heart Circ Physiol 2007; 294:H944-53. [PMID: 18083905 DOI: 10.1152/ajpheart.00406.2007] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Epidemiologic studies have shown an association between exposure to ambient particulate air pollution <10 microm in diameter (PM(10)) and increased cardiovascular morbidity and mortality. We previously showed that PM(10) exposure causes progression of atherosclerosis in coronary arteries. We postulate that the recruitment of monocytes from the circulation into atherosclerotic lesions is a key step in this PM(10)-induced acceleration of atherosclerosis. The study objective was to quantify the recruitment of circulating monocytes into vessel walls and the progression of atherosclerotic plaques induced by exposure to PM(10). Female Watanabe heritable hyperlipidemic rabbits, which naturally develop systemic atherosclerosis, were exposed to PM(10) (EHC-93) or vehicle by intratracheal instillation twice a week for 4 wk. Monocytes, labeled with 5-bromo-2'-deoxyuridine (BrdU) in donors, were transfused to recipient rabbits as whole blood, and the recruitment of BrdU-labeled cells into vessel walls and plaques in recipients was measured by quantitative histological methodology. Exposure to PM(10) caused progression of atherosclerotic lesions in thoracic and abdominal aorta. It also decreased circulating monocyte counts, decreased circulating monocytes expressing high levels of CD31 (platelet endothelial cell adhesion molecule-1) and CD49d (very late antigen-4 alpha-chain), and increased expression of CD54 (ICAM-1) and CD106 (VCAM-1) in plaques. Exposure to PM(10) increased the number of BrdU-labeled monocytes adherent to endothelium over plaques and increased the migration of BrdU-labeled monocytes into plaques and smooth muscle underneath plaques. We conclude that exposure to ambient air pollution particles promotes the recruitment of circulating monocytes into atherosclerotic plaques and speculate that this is a critically important step in the PM(10)-induced progression of atherosclerosis.
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Affiliation(s)
- Kazuhiro Yatera
- James Hogg iCAPTURE Centre for Cardiovascular and Pulmonary Research, University of British Columbia, Saint Paul's Hospital, Vancouver, British Columbia, Canada
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van Eeden SF, Sin DD. Chronic obstructive pulmonary disease: a chronic systemic inflammatory disease. Respiration 2007; 75:224-38. [PMID: 18042978 DOI: 10.1159/000111820] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2007] [Accepted: 09/14/2007] [Indexed: 12/17/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is characterized by chronic inflammation in both the airways causing airway obstruction and the lung tissues causing emphysema. The disease is induced by inhalation of noxious gasses and particulate matter resulting in a chronic persistent inflammatory response in the lung, and the extent of the inflammatory reaction correlates with the severity of the disease. This chronic inflammatory response in the lung is also associated with a significant systemic inflammatory response with downstream adverse clinical health effects. The systemic response in COPD is associated with mortality, specifically cardiovascular mortality. This review describes the nature of the systemic inflammatory response in COPD and the clinical manifestations associated with the systemic response, with a focus on the potential mechanisms for these adverse health effects.
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Affiliation(s)
- Stephan F van Eeden
- James Hogg iCapture Centre for Cardiovascular and Pulmonary Research, University of British Columbia, and Respiratory Division, St. Paul's Hospital, Vancouver, B.C., Canada.
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Abstract
"Would you tell me please, which way I ought to go from here," asked Alice. "That depends a good deal on where you want to go to," said the cat. (Lewis Carroll, Alice's Adventures in Wonderland) A large number of epidemiological studies show positive correlations between increasing levels of particulate matter (PM) in urban air and short-term morbidity and mortality for diverse acute cardiopulmonary diseases. Brought about by PM increments, inflammation is thought to exacerbate preexisting inflammatory diseases. Experimental evidence suggests a hierarchical oxidative stress model, in which a weakened antioxidant defense, as observed in disease or induced by inhaled particles, increases the PM ability to cause lung inflammation, accounting for exacerbations that occur in asthmatics and in patients with chronic obstructive lung disease. The role of PM-induced inflammation leading to acute cardiovascular events such as arrhythmia, heart failure, and myocardial infarction is more speculative. There is neither clear-cut evidence in humans that inhaled PM could get as far as blood circulation nor that proinflammatory mediators are significantly released from inflamed lung tissues, nor that blood coagulability is critically altered. As a whole, data in humans indicate that short-term inflammatory responses to PM are not always detected; they are usually mild and loosely correlated with functional changes. Among these studies, the diversity of PM characteristics, dose metrics, and endpoints hampers a clear discerning of inflammatory mechanism(s). Thus, the question arises as to whether inflammation represents the mechanism of acute cardiopulmonary PM toxicities in susceptible individuals, or rather an event that may coexist with other relevant mechanism(s). This review article discusses the evidence in humans linking short-term PM increments to inflammation and to exacerbations of cardiopulmonary diseases. Although there is a large amount of data available, there still remains a gulf between the number of epidemiological and panel studies and that of controlled exposures. Research on controlled exposure needs expanding, so that the results of time-series and panel studies will be better understood and short-term standards for human exposure may be more confidently allocated.
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Affiliation(s)
- Maria Luisa Scapellato
- Dipartimento di Medicina Ambientale e Sanità Pubblica, Università degli Studi di Padova, Padova, Italy.
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Cozzi E, Wingard CJ, Cascio WE, Devlin RB, Miles JJ, Bofferding AR, Lust RM, Van Scott MR, Henriksen RA. Effect of ambient particulate matter exposure on hemostasis. Transl Res 2007; 149:324-32. [PMID: 17543851 DOI: 10.1016/j.trsl.2006.12.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2006] [Revised: 12/08/2006] [Accepted: 12/12/2006] [Indexed: 11/23/2022]
Abstract
Epidemiological studies have linked levels of particulate matter (PM) in ambient air to cardiovascular mortality and hospitalizations for myocardial infarction (MI) and stroke. Thrombus formation plays a primary role in potentiating acute cardiovascular events, and this study was undertaken to determine whether pulmonary exposure to PM alters hemostasis. PM was collected from the Chapel Hill, NC airshed and was administered to mice by intratracheal instillation at a dose previously shown to exacerbate myocardial ischemia-reperfusion injury. Twenty-four hours after exposure, an increase occurred in the number of circulating platelets and plasma concentrations of fibrinogen and soluble P-selectin. The concentration of tissue factor pathway inhibitor (TFPI) in plasma was decreased, whereas the plasma concentration of plasminogen activator inhibitor (PAI-1) was increased. Consistent with these observations, bleeding time from a tail-tip transection was shortened. These results provide evidence that PM exposure alters hemostasis in otherwise healthy animals and may thereby promote clot formation and impede clot resolution in susceptible individuals. The results also establish definite hemostatic endpoints that can be used to further investigate the effects of dose and particle characteristics on the toxicity of ambient particles.
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Affiliation(s)
- Emily Cozzi
- Department of Physiology, Brody School of Medicine at East Carolina University, Greenville, NC 27834, USA
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