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Leinweber ME, Meisenbacher K, Schmandra T, Karl T, Torsello G, Walensi M, Geisbuesch P, Schmitz-Rixen T, Jung G, Hofmann AG. Exploring the Effects of Local Air Pollution on Popliteal Artery Aneurysms. J Clin Med 2024; 13:3250. [PMID: 38892961 PMCID: PMC11172973 DOI: 10.3390/jcm13113250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 05/27/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
Objectives: A growing body of evidence highlights the effects of air pollution on chronic and acute cardiovascular diseases, such as associations between PM10 and several cardiovascular events. However, evidence of the impact of fine air pollutants on the development and progression of peripheral arterial aneurysms is not available. Methods: Data were obtained from the multicenter PAA outcome registry POPART and the German Environment Agency. Means of the mean daily concentration of PM10, PM2.5, NO2, and O3 concentrations were calculated for 2, 10, and 3650 days prior to surgery for each patient. Additionally, weighted ten-year averages were analyzed. Correlation was assessed by calculating Pearson correlation coefficients, and regression analyses were conducted as multiple linear or multiple logistic regression, depending on the dependent variable. Results: For 1193 patients from the POPART registry, paired air pollution data were available. Most patients were male (95.6%) and received open surgical repair (89.9%). On a regional level, the arithmetic means of the daily means of PM10 between 2000 and 2022 were neither associated with average diameters nor runoff vessels. Negative correlations for mean PAA diameter and mean NO2, as well as a positive correlation with mean O3, were found; however, they were not statistically significant. On patient level, no evidence for an association of mean PM10 exposure over ten years prior to inclusion in the registry and PAA diameter or the number of runoff vessels was found. Weighted PM10, NO2, and O3 exposure over ten years also did not result in significant associations with aneurysm diameter or runoff vessels. Short-term air pollutant concentrations were not associated with symptomatic PAAs or with perioperative complications. Conclusions: We found no indication that long-term air pollutant concentrations are associated with PAA size or severity, neither on a regional nor individual level. Additionally, short-term air pollution showed no association with clinical presentation or treatment outcomes.
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Affiliation(s)
| | - Katrin Meisenbacher
- Department of Vascular and Endovascular Surgery, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Thomas Schmandra
- Department of Vascular Surgery, Sana Klinikum Offenbach, 63069 Offenbach, Germany
| | - Thomas Karl
- Department of Vascular and Endovascular Surgery, Klinikum am Plattenwald, SLK-Kliniken Heilbronn GmbH, 74177 Bad Friedrichshall, Germany
| | - Giovanni Torsello
- Department for Vascular Surgery, Franziskus Hospital Münster, 48145 Münster, Germany
| | - Mikolaj Walensi
- Department of Vascular Surgery and Phlebology, Contilia Heart and Vascular Center, 45138 Essen, Germany
| | - Phillip Geisbuesch
- Department of Vascular and Endovascular Surgery, Klinikum Stuttgart, 70199 Stuttgart, Germany
| | - Thomas Schmitz-Rixen
- German Society of Surgery, Langenbeck-Virchow-Haus, Luisenstraße 58/59, 10117 Berlin, Germany
| | - Georg Jung
- Department of Vascular and Endovascular Surgery, Luzerner Kantonsspital, 6000 Lucern, Switzerland
| | - Amun Georg Hofmann
- FIFOS—Forum for Integrative Research and Systems Biology, 1170 Vienna, Austria
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2
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Lu Z, Coll P, Maitre B, Epaud R, Lanone S. Air pollution as an early determinant of COPD. Eur Respir Rev 2022; 31:31/165/220059. [PMID: 35948393 DOI: 10.1183/16000617.0059-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 06/09/2022] [Indexed: 11/05/2022] Open
Abstract
COPD is a progressive and debilitating disease often diagnosed after 50 years of age, but more recent evidence suggests that its onset could originate very early on in life. In this context, exposure to air pollution appears to be a potential contributor. Although the potential role of air pollution as an early determinant of COPD is emerging, knowledge gaps still remain, including an accurate qualification of air pollutants (number of pollutants quantified and exact composition) or the "one exposure-one disease" concept, which might limit the current understanding. To fill these gaps, improvements in the field are needed, such as the use of atmosphere simulation chambers able to realistically reproduce the complexity of air pollution, consideration of the exposome, as well as improving exchanges between paediatricians and adult lung specialists to take advantage of reciprocal expertise. This review should lead to a better understanding of the current knowledge on air pollution as an early determinant of COPD, as well as identify the existing knowledge gaps and opportunities to fill them. Hopefully, this will lead to better prevention strategies to scale down the development of COPD in future generations.
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Affiliation(s)
- Zhuyi Lu
- Univ Paris Est Creteil, INSERM, IMRB, Creteil, France
| | - Patrice Coll
- Université Paris Cité and Univ Paris Est Créteil, CNRS, LISA, Paris, France
| | - Bernard Maitre
- Univ Paris Est Creteil, INSERM, IMRB, Creteil, France.,Dept of Pneumology, Centre Hospitalier Intercommunal de Créteil, Créteil, France
| | - Ralph Epaud
- Univ Paris Est Creteil, INSERM, IMRB, Creteil, France.,Dept of General Pediatrics, Centre Hospitalier Intercommunal de Créteil, Créteil, France
| | - Sophie Lanone
- Univ Paris Est Creteil, INSERM, IMRB, Creteil, France
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3
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Abstract
Human health is reflected in all spheres of life and the economy. One of the main causes of morbidity and early mortality is polluted air. Ambient air pollution is a serious source of disease and mortality across the world. Cities are notorious for their high levels of air pollution and sickness. However, the precise degree of the health impacts of air pollution at the municipal level are still largely unclear. One of the main reasons for increased morbidity is the presence of particulate matter. The aim of our study is to show the relationship between elevated levels of particulate matter in the air and certain diseases. In this paper, we apply InterCriteria Analysis (ICrA) to find the correlation between the level of air pollution and the number of people seeking medical help. This is a new approach for the problem. The results show the affect of air pollution on certain diseases with a short exposure on polluted air and when the exposure is prolonged. We observed that some diseases are exacerbated by brief exposure to polluted air, while in others, exacerbation occurs after prolonged exposure.
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4
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Liviero F, Campisi M, Mason P, Pavanello S. Transient Receptor Potential Vanilloid Subtype 1: Potential Role in Infection, Susceptibility, Symptoms and Treatment of COVID-19. Front Med (Lausanne) 2021; 8:753819. [PMID: 34805220 PMCID: PMC8599155 DOI: 10.3389/fmed.2021.753819] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/08/2021] [Indexed: 12/20/2022] Open
Abstract
The battle against the new coronavirus that continues to kill millions of people will be still long. Novel strategies are demanded to control infection, mitigate symptoms and treatment of COVID-19. This is even more imperative given the long sequels that the disease has on the health of the infected. The discovery that S protein includes two ankyrin binding motifs (S-ARBMs) and that the transient receptor potential vanilloid subtype 1 (TRPV-1) cation channels contain these ankyrin repeat domains (TRPs-ARDs) suggest that TRPV-1, the most studied member of the TRPV channel family, can play a role in binding SARS-CoV-2. This hypothesis is strengthened by studies showing that other respiratory viruses bind the TRPV-1 on sensory nerves and epithelial cells in the airways. Furthermore, the pathophysiology in COVID-19 patients is similar to the effects generated by TRPV-1 stimulation. Lastly, treatment with agonists that down-regulate or inactivate TRPV-1 can have a beneficial action on impaired lung functions and clearance of infection. In this review, we explore the role of the TRPV-1 channel in the infection, susceptibility, pathogenesis, and treatment of COVID-19, with the aim of looking at novel strategies to control infection and mitigate symptoms, and trying to translate this knowledge into new preventive and therapeutic interventions.
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Affiliation(s)
| | | | | | - Sofia Pavanello
- Occupational Medicine, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University Hospital of Padua, Padova, Italy
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5
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Chen Y, Cao F, Xiao JP, Fang XY, Wang XR, Ding LH, Wang DG, Pan HF. Emerging role of air pollution in chronic kidney disease. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:52610-52624. [PMID: 34448134 DOI: 10.1007/s11356-021-16031-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 08/14/2021] [Indexed: 06/13/2023]
Abstract
Chronic kidney disease (CKD), a global disease burden related to high rates of incidence and mortality, manifests as progressive and irretrievable nephron loss and decreased kidney regeneration capacity. Emerging studies have suggested that exposure to air pollution is closely relevant to increased risk of CKD, CKD progression and end-stage kidney disease (ESKD). Inhaled airborne particles may cause vascular injury, intraglomerular hypertension, or glomerulosclerosis through non-hemodynamic and hemodynamic factors with multiple complex interactions. The mechanisms linking air pollutants exposure to CKD include elevated blood pressure, worsening oxidative stress and inflammatory response, DNA damage and abnormal metabolic changes to aggravate kidney damage. In the present review, we will discuss the epidemiologic observations linking air pollutants exposure to the incidence and progression of CKD. Then, we elaborate the potential roles of several air pollutants including particulate matter and gaseous co-pollutants, environmental tobacco smoke, and gaseous heavy metals in its pathogenesis. Finally, this review outlines the latent effect of air pollution in ESKD patients undergoing dialysis or renal transplant, kidney cancer and other kidney diseases. The information obtained may be beneficial for further elucidating the pathogenesis of CKD and making proper preventive strategies for this disease.
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Affiliation(s)
- Yue Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Fan Cao
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, Anhui, China
| | - Jian-Ping Xiao
- Department of Nephrology, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Xin-Yu Fang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Xue-Rong Wang
- Department of Nephrology, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Li-Hong Ding
- Department of Nephrology, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - De-Guang Wang
- Department of Nephrology, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.
| | - Hai-Feng Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China.
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China.
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6
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Short-term exposure to fine particulate air pollution and emergency department visits for kidney diseases in the Atlanta metropolitan area. Environ Epidemiol 2021; 5:e164. [PMID: 34414347 PMCID: PMC8367053 DOI: 10.1097/ee9.0000000000000164] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 06/18/2021] [Indexed: 02/01/2023] Open
Abstract
Toxicological evidence has shown that fine particulate matter (PM2.5) may affect distant organs, including kidneys, over the short term. However, epidemiological evidence is limited. OBJECTIVES We investigated associations between short-term exposure to PM2.5, major PM2.5 components [elemental carbon (EC), organic carbon (OC), sulfate, and nitrate], and gaseous co-pollutants (O3, CO, SO2, NO2, and NOx) and emergency department (ED) visits for kidney diseases during 2002-2008 in Atlanta, Georgia. METHODS Log-linear time-series models were fitted to estimate the acute effects of air pollution, with single-day and unconstrained distributed lags, on rates of ED visits for kidney diseases [all renal diseases and acute renal failure (ARF)], controlling for meteorology (maximum air and dew-point temperatures) and time (season, day of week, holidays, and long-term time trend). RESULTS For all renal diseases, we observed positive associations for most air pollutants, particularly 8-day cumulative exposure to OC [rate ratio (RR) = 1.018, (95% confidence interval [CI]: 1.003, 1.034)] and EC [1.016 (1.000, 1.031)] per interquartile range increase exposure. For ARF, we observed positive associations particularly for 8-day exposure to OC [1.034 (1.005, 1.064)], EC [1.032 (1.002, 1.063)], nitrate [1.032 (0.996, 1.069)], and PM2.5 [1.026 (0.997, 1.057)] per interquartile range increase exposure. We also observed positive associations for most criteria gases. The RR estimates were generally higher for ARF than all renal diseases. CONCLUSIONS We observed positive associations between short-term exposure to fine particulate air pollution and kidney disease outcomes. This study adds to the growing epidemiological evidence that fine particles may impact distant organs (e.g., kidneys) over the short term.
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Lamas GA, Ujueta F, Navas-Acien A. Lead and Cadmium as Cardiovascular Risk Factors: The Burden of Proof Has Been Met. J Am Heart Assoc 2021; 10:e018692. [PMID: 33942628 PMCID: PMC8200701 DOI: 10.1161/jaha.120.018692] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Gervasio A Lamas
- Department of Medicine Mount Sinai Medical Center Miami Beach FL.,Columbia University Division of Cardiology Mount Sinai Medical CenterMiami Beach FL
| | - Francisco Ujueta
- Department of Medicine Mount Sinai Medical Center Miami Beach FL
| | - Ana Navas-Acien
- Department of Environmental Health Sciences Columbia University Mailman School of Public Health New York NY
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8
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Venosa A. Senescence in Pulmonary Fibrosis: Between Aging and Exposure. Front Med (Lausanne) 2020; 7:606462. [PMID: 33282895 PMCID: PMC7689159 DOI: 10.3389/fmed.2020.606462] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/23/2020] [Indexed: 12/15/2022] Open
Abstract
To date, chronic pulmonary pathologies represent the third leading cause of death in the elderly population. Evidence-based projections suggest that >65 (years old) individuals will account for approximately a quarter of the world population before the turn of the century. Genomic instability, telomere attrition, epigenetic alterations, loss of proteostasis, deregulated nutrient sensing, mitochondrial dysfunction, cellular senescence, stem cell exhaustion, and altered intercellular communication, are described as the nine “hallmarks” that govern cellular fitness. Any deviation from the normal pattern initiates a complex cascade of events culminating to a disease state. This blueprint, originally employed to describe aberrant changes in cancer cells, can be also used to describe aging and fibrosis. Pulmonary fibrosis (PF) is the result of a progressive decline in injury resolution processes stemming from endogenous (physiological decline or somatic mutations) or exogenous stress. Environmental, dietary or occupational exposure accelerates the pathogenesis of a senescent phenotype based on (1) window of exposure; (2) dose, duration, recurrence; and (3) cells type being targeted. As the lung ages, the threshold to generate an irreversibly senescent phenotype is lowered. However, we do not have sufficient knowledge to make accurate predictions. In this review, we provide an assessment of the literature that interrogates lung epithelial, mesenchymal, and immune senescence at the intersection of aging, environmental exposure and pulmonary fibrosis.
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Affiliation(s)
- Alessandro Venosa
- Department of Pharmacology and Toxicology, University of Utah College of Pharmacy, Salt Lake City, UT, United States
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9
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Poier N, Hochstöger J, Hackenberg S, Scherzad A, Bregenzer M, Schopper D, Kleinsasser N. Effects of Zinc Oxide Nanoparticles in HUVEC: Cyto- and Genotoxicity and Functional Impairment After Long-Term and Repetitive Exposure in vitro. Int J Nanomedicine 2020; 15:4441-4452. [PMID: 32606688 PMCID: PMC7319515 DOI: 10.2147/ijn.s246797] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 04/17/2020] [Indexed: 12/13/2022] Open
Abstract
Purpose The present study focuses on threshold levels for cytotoxicity after long-term and repetitive exposure for HUVEC as a model for the specific microvascular endothelial system. Furthermore, possible genotoxic effects and functional impairment caused by ZnO NPs in HUVEC are elucidated. Methods Thresholds for cytotoxic effects are determined by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and Annexin V assay. To demonstrate DNA damage, single-cell microgel electrophoresis (comet) assay is performed after exposure to sub-cytotoxic concentrations of ZnO NPs. The proliferation assay, dot blot assay and capillary tube formation assay are also carried out to analyze functional impairment. Results NPs showed to be spherical in shape with an average size of 45–55 nm. Long-term exposure as well as repetitive exposure with ZnO NPs exceeding 25 µg/mL lead to decreased viability in HUVEC. In addition, DNA damage was indicated by the comet assay after long-term and repetitive exposure. Twenty-four hours after long-term exposure, the proliferation assay does not show any difference between negative control and exposed cells. Forty-eight hours after exposure, HUVEC show an inverse concentration-related ability to proliferate. The dot blot assay provides evidence that ZnO NPs lead to a decreased release of VEGF, while capillary tube formation assay shows restriction in the ability of HUVEC to build tubes and meshes as a first step in angiogenesis. Conclusion Sub-cytotoxic concentrations of ZnO NPs lead to DNA damage and functional impairment in HUVEC. Based on these data, ZnO NPs may affect neo-angiogenesis. Further investigation based on tissue cultures is required to elucidate the impact of ZnO NPs on human cell systems.
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Affiliation(s)
- Nikolaus Poier
- Department of Otorhinolaryngology, Head and Neck Surgery, Kepler University Hospital, Linz 4021, Austria.,Medical Faculty, Johannes Kepler University Linz, Linz 4040, Austria
| | - Johannes Hochstöger
- Department of Otorhinolaryngology, Head and Neck Surgery, Kepler University Hospital, Linz 4021, Austria.,Medical Faculty, Johannes Kepler University Linz, Linz 4040, Austria
| | - Stephan Hackenberg
- Department of Otorhinolaryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Würzburg 97080, Germany
| | - Agmal Scherzad
- Department of Otorhinolaryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Würzburg 97080, Germany
| | - Maximilian Bregenzer
- Department of Otorhinolaryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Würzburg 97080, Germany
| | - Dominik Schopper
- Department of Otorhinolaryngology, Head and Neck Surgery, Kepler University Hospital, Linz 4021, Austria.,Medical Faculty, Johannes Kepler University Linz, Linz 4040, Austria
| | - Norbert Kleinsasser
- Department of Otorhinolaryngology, Head and Neck Surgery, Kepler University Hospital, Linz 4021, Austria.,Department of Otorhinolaryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, Würzburg 97080, Germany
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10
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Hsu YH, Chuang HC, Lee YH, Lin YF, Chen YJ, Hsiao TC, Wu MY, Chiu HW. Traffic-related particulate matter exposure induces nephrotoxicity in vitro and in vivo. Free Radic Biol Med 2019; 135:235-244. [PMID: 30878646 DOI: 10.1016/j.freeradbiomed.2019.03.008] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 03/03/2019] [Accepted: 03/09/2019] [Indexed: 12/14/2022]
Abstract
Traffic emission is responsible for most small-sized particulate matter (PM) air pollution in urban areas. Several recent studies have indicated that traffic-related PM may aggravate kidney disease. Furthermore, exposure to particulate air pollution may be related to the risk of chronic kidney disease (CKD). However, the underlying molecular mechanisms have not been adequately addressed. In the present study, we studied the mechanisms of renal damage that might be associated with exposure to PM. In a real world of whole-body exposure to traffic-related PM model for 3-6 months, PM in urban ambient air can affect kidney function and induce autophagy, endoplasmic reticulum (ER) stress and apoptosis in kidney tissues. Exposure to traffic-related diesel particulate matter (DPM) led to a reduction in cell viability in human kidney tubular epithelial cells HK-2. DPM increased mitochondrial reactive oxygen species (ROS) and decreased the mitochondrial membrane potential. Furthermore, DPM induced ER stress and activated the unfolded protein response (UPR) pathway. Eventually, DPM exposure induced caspase pathways and triggered apoptosis. In addition, DPM induced autophagy through the inhibition of the Akt/mTOR pathway. Autophagy inhibition resulted in significantly increased cytotoxicity and apoptosis. These findings suggest that air pollution in urban areas may cause nephrotoxicity and autophagy as a protective role in PM-induced cytotoxicity.
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Affiliation(s)
- Yung-Ho Hsu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hsiao-Chi Chuang
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of Pulmonary Medicine, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; School of Public Health, College of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Yu-Hsuan Lee
- Department of Food Safety/Hygiene &Risk Management, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yuh-Feng Lin
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yi-Jie Chen
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ta-Chih Hsiao
- Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan
| | - Mei-Yi Wu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Graduate of Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Hui-Wen Chiu
- Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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11
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Tran H, Kim J, Kim D, Choi M, Choi M. Impact of air pollution on cause-specific mortality in Korea: Results from Bayesian Model Averaging and Principle Component Regression approaches. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 636:1020-1031. [PMID: 29729505 DOI: 10.1016/j.scitotenv.2018.04.273] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 04/17/2018] [Accepted: 04/20/2018] [Indexed: 06/08/2023]
Abstract
Health effects related to air pollution are a major global concern. Related studies based on reliable exposure assessment methods would potentially enable policy makers to propose appropriate environmental management policies. In this study, integrated Bayesian Model Averaging (BMA) and Principle Component Regression (PCR) were adopted to assess the severity of air pollution impacts on mortality related to circulatory, respiratory and skin diseases in 25 districts of Seoul, South Korea for the years 2005-2015. These methods were consistent in determining the best regression models and most important pollutants related to mortality in those highly susceptible to poor air quality. Specifically, the results demonstrated that pneumonia was highly associated with air pollution, with a large determination coefficient (BMA: 0.46, PCR: 0.51) and high model's posterior probability (0.47). The most reliable prediction model for pneumonia was indicated by the lowest Bayesian Information Criterion. Among the pollutants, particulate matter with an aerodynamic diameter of 10 μm or less (PM10) was associated with serious health risks on evaluation, with the highest posterior inclusion probabilities (range, 80.20 to 100.00%) and significantly positive correlation coefficients (range, 0.14 to 0.34, p < 0.05). In addition, excessive PM10 concentration (approximately 2.54 times the threshold) and a continuous increase in mortality due to respiratory diseases (approximately 1.50-fold in 10 years) were also exhibited. Overall, the results of this study suggest that currently, socio-environmental policies and international collaboration to mitigate health effects of air pollution is necessary in Seoul, Korea. Moreover, consideration of uncertainty of the regression model, which was verified in this research, will facilitate further application of this approach and enable optimal prediction of interactions between human and environmental factors.
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Affiliation(s)
- Hien Tran
- Graduate School of Water Resources, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Jeongyeong Kim
- Graduate School of Water Resources, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Daeun Kim
- Graduate School of Water Resources, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Minyoung Choi
- Department of Medical Business Administration, Kyunghee University, Republic of Korea
| | - Minha Choi
- Graduate School of Water Resources, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
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12
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Aztatzi-Aguilar OG, Valdés-Arzate A, Debray-García Y, Calderón-Aranda ES, Uribe-Ramirez M, Acosta-Saavedra L, Gonsebatt ME, Maciel-Ruiz JA, Petrosyan P, Mugica-Alvarez V, Gutiérrez-Ruiz MC, Gómez-Quiroz LE, Osornio-Vargas A, Froines J, Kleinman MT, De Vizcaya-Ruiz A. Exposure to ambient particulate matter induces oxidative stress in lung and aorta in a size- and time-dependent manner in rats. TOXICOLOGY RESEARCH AND APPLICATION 2018. [DOI: 10.1177/2397847318794859] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Exposure to particulate matter (PM) has been implicated in oxidative stress (OxS) and inflammation as underlying mechanisms of lung damage and cardiovascular alterations. PM is a chemical mixture that can be subdivided according to their aerodynamic size into coarse (CP), fine (FP), and ultrafine (UFP) particulates. We investigated, in a rat model, the induction of OxS (protein oxidation and antioxidant response), carcinogen-DNA adduct formation, and inflammatory mediators in lung in response to different airborne particulate fractions, CP, FP, and UFP, after an acute and subchronic exposure. In addition, OxS was evaluated in the aorta to assess the effects beyond the lungs. Exposure to CP, FP, and UFP induced time- and size-dependent lung protein oxidation and DNA adduct formation. After acute and subchronic exposure, nuclear factor erythroid-2 (Nrf2) activation was observed in the lung, by electrophoretic mobility shift assay, and the induction of mRNA antioxidant enzymes in the FP and UFP groups, but not in the CP. Cytokine concentration of interleukin 1β, interleukin 6, and macrophage inflammatory protein-2 was significantly increased in bronchoalveolar lavage fluid after acute exposure to FP and UFP. Activation of Nrf2 and expression of mRNA antioxidant enzymes were observed only after the subchronic exposure to FP and UFP in the aorta. Our results indicate that FP and UFP were mainly accountable for the oxidant toxic effects in the lung; OxS is spread from the lung to the cardiovascular system. We conclude that the biological mechanisms associated with transient OxS and inflammation are particle size and time-dependent exposure resulting in acute lung injury, which later reaches the vascular system.
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Affiliation(s)
- OG Aztatzi-Aguilar
- Cátedras-CONACYT
- Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, CDMX, Mexico
| | - A Valdés-Arzate
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
| | - Y Debray-García
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
| | - ES Calderón-Aranda
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
| | - M Uribe-Ramirez
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
| | - L Acosta-Saavedra
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
| | - ME Gonsebatt
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, México
| | - JA Maciel-Ruiz
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, México
| | - P Petrosyan
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, México
| | - V Mugica-Alvarez
- Área de Química Aplicada, Universidad Autónoma Metropolitana, CDMX, México
| | - MC Gutiérrez-Ruiz
- Departamento Ciencias de la Salud, Universidad Autónoma Metropolitana, and Unidad de Medicina Traslacional UNAM/INCICH, Instituto de Investigaciones Biomédicas, CDMX, México
| | - LE Gómez-Quiroz
- Departamento Ciencias de la Salud, Universidad Autónoma Metropolitana, and Unidad de Medicina Traslacional UNAM/INCICH, Instituto de Investigaciones Biomédicas, CDMX, México
| | - A Osornio-Vargas
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - J Froines
- Center for Occupational and Environmental Health, School of Public Health, University of California Los Angeles, Los Angeles, CA, USA
| | - MT Kleinman
- Department of Medicine, School of Medicine, University of California-Irvine, Irvine, CA, USA
| | - A De Vizcaya-Ruiz
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional. Av. Instituto Politécnico Nacional, CDMX, México
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Zeng X, Liu J, Du X, Zhang J, Pan K, Shan W, Xie Y, Song W, Zhao J. The protective effects of selenium supplementation on ambient PM 2.5-induced cardiovascular injury in rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:22153-22162. [PMID: 29804245 DOI: 10.1007/s11356-018-2292-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 05/09/2018] [Indexed: 06/08/2023]
Abstract
Substantial epidemiological and experimental studies have shown that ambient fine particulate matter (PM2.5) exposure can lead to myocardial damage in human and animal through the mechanism of inflammation and oxidative stress. The purpose of the current study was to investigate whether selenium yeast (SeY) supplementation could prevent cardiovascular injury caused by PM2.5 in rats. Fifty-six Sprague-Dawley rats were randomly divided into seven groups: saline control group; solvent control group, low-, middle-, and high-dose Se pretreatment groups, PM2.5 exposure group, and high-dose Se control group. The rats were pretreated with different concentration of dietary SeY for 28 days, then were exposed to PM2.5 by intratracheal instillation every other day, a total of three times. The levels of inflammatory markers (tumor necrosis factor-alpha (TNF-α), interleukin-1beta (IL-1β), soluble intercellular adhesion molecule-1 (sICAM-1), and oxidative responses-related indicators total antioxidant capacity (T-AOC), total superoxide dismutase (T-SOD), glutathione peroxidase (GSH-Px), and malondialdehyde (MDA) were measured in blood and myocardium of the left ventricle. The results showed that although PM2.5 caused a decrease of T-AOC, T-AOD, and GSH-Px and increase of MDA and sICM-1, pretreatment with SeY induced a dose-dependent increase in these anti-oxidative indicators and a decrease in oxidative indicators. In addition, the levels of TNF-α and IL-1β in Se pretreatment groups were significantly lower than that in PM2.5 exposure group. The results indicated that Se supplementation could effectively prevent cardiovascular inflammation and oxidative stress induced by PM2.5. The results also indicated that the nutritional supplementation might be an effective way to protecting people's health from air pollution.
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Affiliation(s)
- Xuejiao Zeng
- Department of Environmental Health, School of Public Health and the Key Laboratory of Public Health Safety, Fudan University, 138 Yixueyuan Road, Box 249, Shanghai, 200032, China
| | - Jie Liu
- Department of Environmental and Occupational Health, Minhang District Center for Disease Control and Prevention, Shanghai, 201101, China
| | - Xihao Du
- Department of Environmental Health, School of Public Health and the Key Laboratory of Public Health Safety, Fudan University, 138 Yixueyuan Road, Box 249, Shanghai, 200032, China
| | - Jia Zhang
- Department of Environmental Health, School of Public Health and the Key Laboratory of Public Health Safety, Fudan University, 138 Yixueyuan Road, Box 249, Shanghai, 200032, China
| | - Kun Pan
- Department of Environmental Health, School of Public Health and the Key Laboratory of Public Health Safety, Fudan University, 138 Yixueyuan Road, Box 249, Shanghai, 200032, China
| | - Wei Shan
- Department of Epidemiology, School of Public Health, Ministry of Education, Fudan University, Shanghai, 200032, China
| | - Yuquan Xie
- Department of Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
| | - Weimin Song
- Department of Environmental Health, School of Public Health and the Key Laboratory of Public Health Safety, Fudan University, 138 Yixueyuan Road, Box 249, Shanghai, 200032, China
| | - Jinzhuo Zhao
- Department of Environmental Health, School of Public Health and the Key Laboratory of Public Health Safety, Fudan University, 138 Yixueyuan Road, Box 249, Shanghai, 200032, China.
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14
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Jeevanandam J, Barhoum A, Chan YS, Dufresne A, Danquah MK. Review on nanoparticles and nanostructured materials: history, sources, toxicity and regulations. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:1050-1074. [PMID: 29719757 PMCID: PMC5905289 DOI: 10.3762/bjnano.9.98] [Citation(s) in RCA: 1088] [Impact Index Per Article: 181.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 03/09/2018] [Indexed: 05/07/2023]
Abstract
Nanomaterials (NMs) have gained prominence in technological advancements due to their tunable physical, chemical and biological properties with enhanced performance over their bulk counterparts. NMs are categorized depending on their size, composition, shape, and origin. The ability to predict the unique properties of NMs increases the value of each classification. Due to increased growth of production of NMs and their industrial applications, issues relating to toxicity are inevitable. The aim of this review is to compare synthetic (engineered) and naturally occurring nanoparticles (NPs) and nanostructured materials (NSMs) to identify their nanoscale properties and to define the specific knowledge gaps related to the risk assessment of NPs and NSMs in the environment. The review presents an overview of the history and classifications of NMs and gives an overview of the various sources of NPs and NSMs, from natural to synthetic, and their toxic effects towards mammalian cells and tissue. Additionally, the types of toxic reactions associated with NPs and NSMs and the regulations implemented by different countries to reduce the associated risks are also discussed.
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Affiliation(s)
- Jaison Jeevanandam
- Department of Chemical Engineering, Curtin University, CDT250 Miri, Sarawak 98009, Malaysia
| | - Ahmed Barhoum
- Department of Materials and Chemistry, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
- Chemistry Department, Faculty of Science, Helwan University, 11795 Helwan, Cairo, Egypt
| | - Yen S Chan
- Department of Chemical Engineering, Curtin University, CDT250 Miri, Sarawak 98009, Malaysia
| | - Alain Dufresne
- University of Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France
| | - Michael K Danquah
- Department of Chemical Engineering, Curtin University, CDT250 Miri, Sarawak 98009, Malaysia
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15
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Ragguett RM, Cha DS, Subramaniapillai M, Carmona NE, Lee Y, Yuan D, Rong C, McIntyre RS. Air pollution, aeroallergens and suicidality: a review of the effects of air pollution and aeroallergens on suicidal behavior and an exploration of possible mechanisms. REVIEWS ON ENVIRONMENTAL HEALTH 2017; 32:343-359. [PMID: 28915125 DOI: 10.1515/reveh-2017-0011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 08/01/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE Risk factors for suicide can be broadly categorized as sociodemographic, clinical and treatment. There is interest in environmental risk and protection factors for suicide. Emerging evidence suggests a link between environmental factors in the form of air pollution and aeroallergens in relation to suicidality. METHODS Herein, we conducted a systematic review of 15 articles which have met inclusion criteria on the aforementioned effects. RESULTS The majority of the reviewed articles reported an increased suicide risk alongside increased air pollutants or aeroallergens (i.e. pollen) increase; however, not all environmental factors were explored equally. In specific, studies that were delimited to evaluating particulate matter (PM) reported a consistent association with suicidality. We also provide a brief description of putative mechanisms (e.g. inflammation and neurotransmitter dysregulation) that may mediate the association between air pollution, aeroallergens and suicidality. CONCLUSION Available evidence suggests that exposure to harmful air quality may be associated with suicidality. There are significant public health implications which are amplified in regions and countries with greater levels of air pollution and aeroallergens. In addition, those with atopic sensitivity may represent a specific subgroup that is at risk.
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16
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Scherzad A, Meyer T, Kleinsasser N, Hackenberg S. Molecular Mechanisms of Zinc Oxide Nanoparticle-Induced Genotoxicity Short Running Title: Genotoxicity of ZnO NPs. MATERIALS 2017; 10:ma10121427. [PMID: 29240707 PMCID: PMC5744362 DOI: 10.3390/ma10121427] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/09/2017] [Accepted: 12/09/2017] [Indexed: 01/18/2023]
Abstract
Background: Zinc oxide nanoparticles (ZnO NPs) are among the most frequently applied nanomaterials in consumer products. Evidence exists regarding the cytotoxic effects of ZnO NPs in mammalian cells; however, knowledge about the potential genotoxicity of ZnO NPs is rare, and results presented in the current literature are inconsistent. Objectives: The aim of this review is to summarize the existing data regarding the DNA damage that ZnO NPs induce, and focus on the possible molecular mechanisms underlying genotoxic events. Methods: Electronic literature databases were systematically searched for studies that report on the genotoxicity of ZnO NPs. Results: Several methods and different endpoints demonstrate the genotoxic potential of ZnO NPs. Most publications describe in vitro assessments of the oxidative DNA damage triggered by dissoluted Zn2+ ions. Most genotoxicological investigations of ZnO NPs address acute exposure situations. Conclusion: Existing evidence indicates that ZnO NPs possibly have the potential to damage DNA. However, there is a lack of long-term exposure experiments that clarify the intracellular bioaccumulation of ZnO NPs and the possible mechanisms of DNA repair and cell survival.
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Affiliation(s)
- Agmal Scherzad
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, 97080 Wuerzburg, Germany.
| | - Till Meyer
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, 97080 Wuerzburg, Germany.
| | - Norbert Kleinsasser
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, 97080 Wuerzburg, Germany.
| | - Stephan Hackenberg
- Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, University of Wuerzburg, 97080 Wuerzburg, Germany.
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17
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Al Suleimani YM, Al Mahruqi AS, Al Za'abi M, Shalaby A, Ashique M, Nemmar A, Ali BH. Effect of diesel exhaust particles on renal vascular responses in rats with chronic kidney disease. ENVIRONMENTAL TOXICOLOGY 2017; 32:541-549. [PMID: 26990802 DOI: 10.1002/tox.22258] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 02/21/2016] [Accepted: 02/26/2016] [Indexed: 06/05/2023]
Abstract
Several recent studies have indicated the possible association between exposure to particulate air pollution and the increased rate of morbidity and mortality in patients with kidney diseases. The link of this observation to vascular damage has not been adequately addressed. Therefore, this study aims to investigate possible vascular damage that might be associated with exposure to diesel exhaust particles (DP) in adenine (AD)-induced chronic kidney disease (CKD) in rats, and the possible ameliorative effect of gum acacia (GA). CKD was induced by feeding AD (0.75%, w/w), and DP (0.5 mg/kg) was instilled intratracheally every second day and GA was given concomitantly in the drinking water at a dose of 15% w/v. All treatments were given concomitantly for 28 days. Changes in renal blood flow (RBF) and systolic and diastolic blood pressure were monitored in these animals after anesthesia, together with several other endpoints. Exposure to DP significantly reduced RBF and this was significantly potentiated in AD-treated rats. Phenylephrine-induced decreases in RBF and increases in systolic and diastolic blood pressure were severely potentiated in rats exposed to DP, and these actions were significantly augmented in AD-treated rats. GA did not significantly affect the vascular impairment induced by AD and DP given together. This study provides experimental evidence that exposure to particulate air pollution can exacerbate the vascular damage seen in patients with CKD. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 541-549, 2017.
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Affiliation(s)
- Y M Al Suleimani
- Department of Pharmacology and Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, P. O. Box 35 Al Khod, Postal Code 123, Oman
| | - A S Al Mahruqi
- Department of Pharmacology and Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, P. O. Box 35 Al Khod, Postal Code 123, Oman
| | - M Al Za'abi
- Department of Pharmacology and Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, P. O. Box 35 Al Khod, Postal Code 123, Oman
| | - A Shalaby
- Department of Pathology, College of Medicine and Health Sciences, Sultan Qaboos University, P. O. Box 35 Al Khod, Postal code 123, Oman
| | - M Ashique
- Department of Pharmacology and Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, P. O. Box 35 Al Khod, Postal Code 123, Oman
| | - A Nemmar
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Postal code 1777, Al-Ain, United Arab Emirates
| | - B H Ali
- Department of Pharmacology and Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, P. O. Box 35 Al Khod, Postal Code 123, Oman
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18
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Schwarze PE, Ovrevik J, Låg M, Refsnes M, Nafstad P, Hetland RB, Dybing E. Particulate matter properties and health effects: consistency of epidemiological and toxicological studies. Hum Exp Toxicol 2016; 25:559-79. [PMID: 17165623 DOI: 10.1177/096032706072520] [Citation(s) in RCA: 252] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Identifying the ambient particulate matter (PM) fractions or constituents, critically involved in eliciting adverse health effects, is crucial to the implementation of more cost-efficient abatement strategies to improve air quality. This review focuses on the importance of different particle properties for PM-induced effects, and whether there is consistency in the results from epidemiological and experimental studies. An evident problem for such comparisons is that epidemiological and experimental data on the effects of specific components of ambient PM are limited. Despite this, some conclusions can be drawn. With respect to the importance of the PM size-fractions, experimental and epidemiological studies are somewhat conflicting, but there seems to be a certain consistency in that the coarse fraction (PM10-2.5) has an effect that should not be neglected. Better exposure characterization may improve the consistency between the results from experimental and epidemiological studies, in particular for ultrafine particles. Experimental data indicate that surface area is an important metric, but composition may play an even greater role in eliciting effects. The consistency between epidemiological and experimental findings for specific PM-components appears most convincing for metals, which seem to be important for the development of both pulmonary and cardiovascular disease. Metals may also be involved in PM-induced allergic sensitization, but the epidemiological evidence for this is scarce. Soluble organic compounds appear to be implicated in PM-induced allergy and cancer, but the data from epidemiological studies are insufficient for any conclusions. The present review suggests that there may be a need for improvements in research designs. In particular, there is a need for better exposure assessments in epidemiological investigations, whereas experimental data would benefit from an improved comparability of studies. Combined experimental and epidemiological investigations may also help answer some of the unresolved issues.
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Affiliation(s)
- P E Schwarze
- Norwegian Institute of Public Health, Oslo, Norway.
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Nemmar A, Beegam S, Yuvaraju P, Yasin J, Tariq S, Attoub S, Ali BH. Ultrasmall superparamagnetic iron oxide nanoparticles acutely promote thrombosis and cardiac oxidative stress and DNA damage in mice. Part Fibre Toxicol 2016; 13:22. [PMID: 27138375 PMCID: PMC4852430 DOI: 10.1186/s12989-016-0132-x] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 04/18/2016] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Ultrasmall superparamagnetic iron oxide nanoparticles (USPIO) are being developed for several biomedical applications including drug delivery and imaging. However, little is known about their possible adverse effects on thrombosis and cardiac oxidative and DNA damage. METHODS Presently, we investigated the acute (1 h) effect of intravenously (i.v.) administered USPIO in mice (0.4, 2 and 10 μg/kg). Diesel exhaust particles (DEP; 400 μg/kg) were used as positive control. RESULTS USPIO induced a prothrombotic effect in pial arterioles and venules in vivo and increased the plasma plasminogen activator inhibitor-1 (PAI-1). Both thrombogenicity and PAI-1 concentration were increased by DEP. The direct addition of USPIO (0.008, 0.04 and 0.2 μg/ml) to untreated mouse blood dose-dependently induced in vitro platelet aggregation. USPIO caused a shortening of activated partial thromboplastin time (aPTT) and prothrombin time (PT). Similarly, DEP administration (1 μg/ml) triggered platelet aggregation in vitro in whole blood. DEP also reduced PT and aPTT. The plasma levels of creatine phosphokinase-MB isoenzyme (CK-MB), lactate dehydrogenase (LDH) and troponin-I were increased by USPIO. DEP induced a significant increase of CK-MB, LDH and troponin I levels in plasma. The cardiac levels of markers of oxidative stress including lipid peroxidation, reactive oxygen species and superoxide dismutase activity were increased by USPIO. Moreover, USPIO caused DNA damage in the heart. Likewise, DEP increased the markers of oxidative stress and induced DNA damage in the heart. CONCLUSION We conclude that acute i.v. administration of USPIO caused thrombosis and cardiac oxidative stress and DNA damage. These findings provide novel insight into the pathophysiological effects of USPIO on cardiovascular homeostasis, and highlight the need for a thorough evaluation of their toxicity.
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Affiliation(s)
- Abderrahim Nemmar
- Departments of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates.
| | - Sumaya Beegam
- Departments of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Priya Yuvaraju
- Departments of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Javed Yasin
- Department of Internal Medicine, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Saeed Tariq
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Samir Attoub
- Department of Pharmacology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Badreldin H Ali
- Department of Pharmacology, College of Medicine & Health Sciences, Sultan Qaboos University, P.O. Box 35, Muscat 123, Al-Khod, Sultanate of Oman
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20
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Tseng CY, Chung MC, Wang JS, Chang YJ, Chang JF, Lin CH, Hseu RS, Chao MW. PotentIn VitroProtection Against PM2.5-Caused ROS Generation and Vascular Permeability by Long-Term Pretreatment withGanoderma tsugae. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2016; 44:355-76. [DOI: 10.1142/s0192415x16500208] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Epidemiological studies show increased particulate matter (PM[Formula: see text]) particles in ambient air are correlated with increased myocardial infarctions. Given the close association of capillaries and alveoli, the dysfunction is caused when inhaled PM[Formula: see text] particles come in close proximity to capillary endothelial cells. We previously suggested that the inhalation of PM[Formula: see text] diesel exhaust particles (DEP) induces oxidative stress and upregulates the Nrf2/HO-1 pathway, inducing vascular permeability factor VEGFA secretion, which results in cell-cell adherens junction disruption and PM[Formula: see text] transmigratation into circulation. Here, we minimized the level that PM[Formula: see text] traveled in the bloodstream by pre-supplementing with a traditional Chinese medicine (TCM) Ganoderma tsugae DMSO extract (GTDE) prior to PM[Formula: see text] exposure. Our results show that PM[Formula: see text] caused alterations in enzyme activities and cellular anti-oxidant balance. We found decreased glutathione levels, a reduced cellular redox ratio, increased ROS generation and cytotoxicity in the cellular fractions. The oxidative stress caused DNA damage and apoptosis, likely causing downstream molecular events that trigger vasculature permeabilization and, eventually, cardiovascular disorders. Our results show long-term GTDE treatment increased endogenous glutathione level, while PM[Formula: see text]-reduced glutathione levels and the cellular redox ratio. GTDE was protective against the genotoxic and apoptotic effects initiated by PM[Formula: see text] oxidative stress. Vascular permeability revealed that PM[Formula: see text] only accumulated on the surface of cells after GTDE treatment; no penetration was detected. After two weeks of GTDE treatment, VEGFA secretion was significantly reduced in human umbilical vein endothelial cells (HUVEC) and endothelial cell migration was blocked. Our results suggest GTDE prevents PM[Formula: see text] transmigration into the bloodstream, and the resultant dysfunction, by inhibiting oxidative stress production and endothelial permeability.
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Affiliation(s)
- Chia-Yi Tseng
- Department of Biomedical Engineering
- Department of Bioscience Technology, Chung Yuan Christian University Taoyuan City 32023, Taiwan
| | - Meng-Chi Chung
- Department of Bioscience Technology, Chung Yuan Christian University Taoyuan City 32023, Taiwan
| | - Jhih-Syuan Wang
- Department of Bioscience Technology, Chung Yuan Christian University Taoyuan City 32023, Taiwan
| | - Yu-Jung Chang
- Department of Bioscience Technology, Chung Yuan Christian University Taoyuan City 32023, Taiwan
| | - Jing-Fen Chang
- Department of Bioscience Technology, Chung Yuan Christian University Taoyuan City 32023, Taiwan
| | - Chin-Hung Lin
- Department of Bioscience Technology, Chung Yuan Christian University Taoyuan City 32023, Taiwan
| | - Ruey-Shyang Hseu
- Department of Biochemical Science and Technology, National Taiwan University, Da-an District, Taipei 10617, Taiwan
| | - Ming-Wei Chao
- Center of Nanotechnology
- Department of Bioscience Technology, Chung Yuan Christian University Taoyuan City 32023, Taiwan
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Weichenthal S, Lavigne E, Villeneuve PJ, Reeves F. Airborne Pollen Concentrations and Emergency Room Visits for Myocardial Infarction: A Multicity Case-Crossover Study in Ontario, Canada. Am J Epidemiol 2016; 183:613-21. [PMID: 26934896 DOI: 10.1093/aje/kwv252] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 09/08/2015] [Indexed: 12/21/2022] Open
Abstract
Few studies have examined the acute cardiovascular effects of airborne allergens. We conducted a case-crossover study to evaluate the relationship between airborne allergen concentrations and emergency room visits for myocardial infarction (MI) in Ontario, Canada. In total, 17,960 cases of MI were identified between the months of April and October during the years 2004-2011. Daily mean aeroallergen concentrations (pollen and mold spores) were assigned to case and control periods using central-site monitors in each city along with daily measurements of meteorological data and air pollution (nitrogen dioxide and ozone). Odds ratios and their 95% confidence intervals were estimated using conditional logistic regression models adjusting for time-varying covariates. Risk of MI was 5.5% higher (95% confidence interval (CI): 3.4, 7.6) on days in the highest tertile of total pollen concentrations compared with days in the lowest tertile, and a significant concentration-response trend was observed (P < 0.001). Higher MI risk was limited to same-day pollen concentrations, with the largest risks being observed during May (odds ratio = 1.16, 95% CI: 1.00, 1.35) and June (odds ratio = 1.10, 95% CI: 1.00, 1.22), when tree and grass pollen are most common. Mold spore concentrations were not associated with MI. Our findings suggest that airborne pollen might represent a previously unidentified environmental risk factor for myocardial infarction.
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Seriani R, Junqueira MDS, de Toledo AC, Martins MA, Seckler M, Alencar AM, Negri EM, Silva LFF, Mauad T, Saldiva PHN, Macchione M. Diesel exhaust particulates affect cell signaling, mucin profiles, and apoptosis in trachea explants of Balb/C mice. ENVIRONMENTAL TOXICOLOGY 2015; 30:1297-1308. [PMID: 24777914 DOI: 10.1002/tox.22000] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 01/10/2014] [Accepted: 04/15/2014] [Indexed: 06/03/2023]
Abstract
Particulate matter from diesel exhaust (DEP) has toxic properties and can activate intracellular signaling pathways and induce metabolic changes. This study was conducted to evaluate the activation of extracellular signal-regulated kinase (ERK) and c-Jun N-terminal kinase (JNK) and to analyze the mucin profile (acid (AB(+) ), neutral (PAS(+) ), or mixed (AB/PAS(+) ) mucus) and vacuolization (V) of tracheal explants after treatment with 50 or 100 μg/mL DEP for 30 or 60 min. Western blot analyses showed small increases in ERK1/2 and JNK phosphorylation after 30 min of 100 μg/mL DEP treatment compared with the control. An increase in JNK phosphorylation was observed after 60 min of treatment with 50 μg/mL DEP compared with the control. We did not observe any change in the level of ERK1/2 phosphorylation after treatment with 50 μg/mL DEP. Other groups of tracheas were subjected to histological sectioning and stained with periodic acid-Schiff (PAS) reagent and Alcian Blue (AB). The stained tissue sections were then subjected to morphometric analysis. The results obtained were compared using ANOVA. Treatment with 50 μg/mL DEP for 30 min or 60 min showed a significant increase (p < 0.001) in the amount of acid mucus, a reduction in neutral mucus, a significant reduction in mixed mucus, and greater vacuolization. Our results suggest that compounds found in DEPs are able to activate acid mucus production and enhance vacuolization and cell signaling pathways, which can lead to airway diseases.
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Affiliation(s)
- Robson Seriani
- Laboratory of Experimental Air Pollution, Department of Pathology, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Mara de Souza Junqueira
- Central Biotery Laboratory, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Alessandra Choqueta de Toledo
- Experimental Therapeutics Laboratory, Department of Medicine, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Milton Arruda Martins
- Experimental Therapeutics Laboratory, Department of Medicine, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Marcelo Seckler
- Department of Chemistry Engineering, Polytechnic School, University of São Paulo, São Paulo, SP, Brazil
| | - Adriano Mesquita Alencar
- Department of General Physics - Institute of Physics, University of São Paulo, São Paulo, SP, Brazil
| | - Elnara Marcia Negri
- Laboratory of Experimental Air Pollution, Department of Pathology, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Luiz Fernando Ferraz Silva
- Laboratory of Experimental Air Pollution, Department of Pathology, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Thaís Mauad
- Laboratory of Experimental Air Pollution, Department of Pathology, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Paulo Hilário Nascimento Saldiva
- Laboratory of Experimental Air Pollution, Department of Pathology, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Mariangela Macchione
- Laboratory of Experimental Air Pollution, Department of Pathology, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
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Nemmar A, Al-Salam S, Yuvaraju P, Beegam S, Ali BH. Emodin mitigates diesel exhaust particles-induced increase in airway resistance, inflammation and oxidative stress in mice. Respir Physiol Neurobiol 2015; 215:51-7. [PMID: 26001677 DOI: 10.1016/j.resp.2015.05.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 05/11/2015] [Accepted: 05/13/2015] [Indexed: 01/16/2023]
Abstract
Clinical and experimental studies have reported that short-term exposure to particulate air pollution is associated with inflammation, oxidative stress and impairment of lung function. Emodin (1,3,8-trihydroxy-6-methylanthraquinone) has a strong antioxidant and anti-inflammatory actions. Therefore, in the present study, we evaluated the possible ameliorative effect of emodin on diesel exhaust particles (DEP)-induced impairment of lung function, inflammation and oxidative stress in mice. Mice were intratracheally instilled with DEP (20 μg/mouse) or saline (control). Emodin was administered intraperitoneally 1h before and 7h after pulmonary exposure to DEP. Twenty-four hours following DEP exposure, we evaluated airway resistance measured by forced oscillation technique, lung inflammation and oxidative stress. Emodin treatment abated the DEP-induced increase in airway resistance, and prevented the influx of neutrophils in bronchoalveolar lavage fluid. Similarly, lung histopathology confirmed the protective effect of emodin on DEP-induced lung inflammation. DEP induced a significant increase of proinflammatory cytokines in the lung including tumor necrosis factor α, interleukin 6 and interleukin 1β. The latter effect was significantly ameliorated by emodin. DEP caused a significant increase in lung lipid peroxidation, reactive oxygen species and a significant decrease of reduced glutathione concentration. These effects were significantly mitigated by emodin. We conclude that emodin significantly mitigated DEP-induced increase of airway resistance, lung inflammation and oxidative stress. Pending further pharmacological and toxicological studies, emodin may be considered a potentially useful pulmonary protective agent against particulate air pollution-induced lung toxicity.
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Affiliation(s)
- Abderrahim Nemmar
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates.
| | - Suhail Al-Salam
- Department of Pathology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Priya Yuvaraju
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Sumaya Beegam
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
| | - Badreldin H Ali
- Department of Pharmacology and Clinical Pharmacy, College of Medicine & Health Sciences, Sultan Qaboos University, P.O. Box 35, Muscat 123, Al-Khod, Oman
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Kloog I, Zanobetti A, Nordio F, Coull BA, Baccarelli AA, Schwartz J. Effects of airborne fine particles (PM2.5 ) on deep vein thrombosis admissions in the northeastern United States. J Thromb Haemost 2015; 13:768-74. [PMID: 25678264 PMCID: PMC4424156 DOI: 10.1111/jth.12873] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Indexed: 11/27/2022]
Abstract
BACKGROUND Literature relating air pollution exposure to deep vein thrombosis (DVT) and pulmonary embolism (PE), despite biological plausibility, is sparse. No comprehensive study examining associations between both short- and long-term exposure to particulate matter (PM)2.5 and DVT or PE has been published. Using a novel PM2.5 prediction model, we study whether long- and short-term PM2.5 exposure is associated with DVT and PE admissions among elderly across the northeastern United States. METHODS We estimated daily exposure of PM2.5 in each ZIP code. We investigated the long- and short-term effects of PM2.5 on DVT and PE hospital admissions. There were 453,413 DVT and 151,829 PE admissions in the study. For short-term exposure, we performed a case crossover analysis matching month and year and defined the hazard period as lag 01 (exposure of day of admission and previous day). For the long-term association, we used a Poisson regression. RESULTS A 10-μg m(-3) increase in short-term exposure was associated with a 0.63% increase in DVT admissions (95% confidence interval [CI] = 0.03% to 1.25%) and a 6.98% (95% CI = 5.65% to 8.33%) increase in long-term exposure admissions. For PE, the associated risks were 0.38% (95% CI = -0.68% to 1.25%) and 2.67% (95% CI = 5.65% to 8.33%). These results persisted when analyses were restricted to location-periods meeting the current Environmental Protection Agency annual standard of 12 μg m(-3) . CONCLUSIONS Our findings showed that PM2.5 exposure was associated with DVT and PE hospital admissions and that current standards are not protective of this result.
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Affiliation(s)
- Itai Kloog
- Department of Geography and Environmental Development, Ben-Gurion University of the Negev, P.O.B. 653 Beer Sheva, Israel
| | - Antonella Zanobetti
- Department of Environmental Health - Exposure, Epidemiology and Risk Program, Harvard School of Public Health, Landmark Center 401 Park Dr West, Boston MA USA 02215
| | - Francesco Nordio
- Department of Environmental Health - Exposure, Epidemiology and Risk Program, Harvard School of Public Health, Landmark Center 401 Park Dr West, Boston MA USA 02215
| | - Brent A. Coull
- Department of Biostatistics, Harvard School of Public Health, Boston, MA, USA, 02215
| | - Andrea A. Baccarelli
- Department of Environmental Health - Exposure, Epidemiology and Risk Program, Harvard School of Public Health, Landmark Center 401 Park Dr West, Boston MA USA 02215
| | - Joel Schwartz
- Department of Environmental Health - Exposure, Epidemiology and Risk Program, Harvard School of Public Health, Landmark Center 401 Park Dr West, Boston MA USA 02215
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Yoshizaki K, Brito JM, Moriya HT, Toledo AC, Ferzilan S, Ligeiro de Oliveira AP, Machado ID, Farsky SHP, Silva LFF, Martins MA, Saldiva PHN, Mauad T, Macchione M. Chronic exposure of diesel exhaust particles induces alveolar enlargement in mice. Respir Res 2015; 16:18. [PMID: 25848680 PMCID: PMC4345004 DOI: 10.1186/s12931-015-0172-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 01/17/2015] [Indexed: 12/21/2022] Open
Abstract
Background Diesel exhaust particles (DEPs) are deposited into the respiratory tract and are thought to be a risk factor for the development of diseases of the respiratory system. In healthy individuals, the timing and mechanisms of respiratory tract injuries caused by chronic exposure to air pollution remain to be clarified. Methods We evaluated the effects of chronic exposure to DEP at doses below those found in a typical bus corridor in Sao Paulo (150 μg/m3). Male BALB/c mice were divided into mice receiving a nasal instillation: saline (saline; n = 30) and 30 μg/10 μL of DEP (DEP; n = 30). Nasal instillations were performed five days a week, over a period of 90 days. Bronchoalveolar lavage (BAL) was performed, and the concentrations of interleukin (IL)-4, IL-10, IL-13 and interferon-gamma (INF-γ) were determined by ELISA-immunoassay. Assessment of respiratory mechanics was performed. The gene expression of Muc5ac in lung was evaluated by RT-PCR. The presence of IL-13, MAC2+ macrophages, CD3+, CD4+, CD8+ T cells and CD20+ B cells in tissues was analysed by immunohistochemistry. Bronchial thickness and the collagen/elastic fibers density were evaluated by morphometry. We measured the mean linear intercept (Lm), a measure of alveolar distension, and the mean airspace diameter (D0) and statistical distribution (D2). Results DEP decreased IFN-γ levels in BAL (p = 0.03), but did not significantly alter IL-4, IL-10 and IL-13 levels. MAC2+ macrophage, CD4+ T cell and CD20+ B cell numbers were not altered; however, numbers of CD3+ T cells (p ≤ 0.001) and CD8+ T cells (p ≤ 0.001) increased in the parenchyma. Although IL-13 (p = 0.008) expression decreased in the bronchiolar epithelium, Muc5ac gene expression was not altered in the lung of DEP-exposed animals. Although respiratory mechanics, elastic and collagen density were not modified, the mean linear intercept (Lm) was increased in the DEP-exposed animals (p ≤ 0.001), and the index D2 was statistically different (p = 0.038) from the control animals. Conclusion Our data suggest that nasal instillation of low doses of DEP over a period of 90 days results in alveolar enlargement in the pulmonary parenchyma of healthy mice. Electronic supplementary material The online version of this article (doi:10.1186/s12931-015-0172-z) contains supplementary material, which is available to authorized users.
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Caussin C, Escolano S, Mustafic H, Bataille S, Tafflet M, Chatignoux E, Lambert Y, Benamer H, Garot P, Jabre P, Delorme L, Varenne O, Teiger E, Livarek B, Empana JP, Spaulding C, Jouven X. Short-term exposure to environmental parameters and onset of ST elevation myocardial infarction. The CARDIO-ARSIF registry. Int J Cardiol 2015; 183:17-23. [PMID: 25662048 DOI: 10.1016/j.ijcard.2015.01.078] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/30/2014] [Accepted: 01/26/2015] [Indexed: 10/24/2022]
Abstract
BACKGROUND Environmental parameters have been reported to be triggers of acute myocardial infarction (MI). However, the individual role of each parameter is unknown. We quantified the respective association of climate parameters, influenza epidemics and air pollutants with the onset of ST elevation MI (STEMI) in Paris and the surrounding small ring. METHODS Data from the CARDIO-ARSIF registry (Paris and small ring STEMI population), Météo France (Climate), GROG (Influenza epidemic) and AIRPARIF (Air Pollution) were analyzed. The association between short-term exposure (1 day lag time) to environmental parameters and STEMI occurrence was quantified by time series modeling of daily STEMI count data, using Poisson regression with generalized additive models. RESULTS Between 2003 and 2008, 11,987 <24H STEMI confirmed by angiography were adjudicated. There was a 5.0% excess relative risk (ERR) of STEMI per 10°C decrease in maximal temperature (95% CI 2.1% to 7.8%: p=0.001) and an 8.9% ERR (95% CI 3.2% to 14.9%: p=0.002) during an influenza epidemic after adjustment on week-days and holidays. Associations were consistent when short-term exposure varied from 2 to 7 days. Associations between lower temperatures and STEMI were stronger in magnitude when influenza epidemic was present. Short-term exposure to climatic parameters or pollutants was not associated with STEMI. CONCLUSIONS The present population based registry of STEMI suggests that short-term exposure to lower temperature and influenza epidemic is associated with a significant excess relative risk of STEMI. Subjects at risk for MI may benefit from specific protections against cold temperature and influenza infection.
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Affiliation(s)
| | - Sylvie Escolano
- INSERM Unit 970 Paris Cardiovascular Research Center, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France
| | - Hazrije Mustafic
- INSERM Unit 970 Paris Cardiovascular Research Center, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France
| | | | - Muriel Tafflet
- INSERM Unit 970 Paris Cardiovascular Research Center, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France
| | | | | | | | | | - Patricia Jabre
- INSERM Unit 970 Paris Cardiovascular Research Center, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France
| | | | | | | | | | - Jean-Philippe Empana
- INSERM Unit 970 Paris Cardiovascular Research Center, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France
| | - Christian Spaulding
- INSERM Unit 970 Paris Cardiovascular Research Center, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France; Hôpital Européen Georges Pompidou, Assistance Publique Hôpitaux de Paris, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France.
| | - Xavier Jouven
- INSERM Unit 970 Paris Cardiovascular Research Center, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France; Hôpital Européen Georges Pompidou, Assistance Publique Hôpitaux de Paris, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Paris, France
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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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Nemmar A, Albarwani S, Beegam S, Yuvaraju P, Yasin J, Attoub S, Ali BH. Amorphous silica nanoparticles impair vascular homeostasis and induce systemic inflammation. Int J Nanomedicine 2014; 9:2779-89. [PMID: 24936130 PMCID: PMC4047982 DOI: 10.2147/ijn.s52818] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Amorphous silica nanoparticles (SiNPs) are being used in biomedical, pharmaceutical, and many other industrial applications entailing human exposure. However, their potential vascular and systemic pathophysiologic effects are not fully understood. Here, we investigated the acute (24 hours) systemic toxicity of intraperitoneally administered 50 nm and 500 nm SiNPs in mice (0.5 mg/kg). Both sizes of SiNPs induced a platelet proaggregatory effect in pial venules and increased plasma concentration of plasminogen activator inhibitor-1. Elevated plasma levels of von Willebrand factor and fibrinogen and a decrease in the number of circulating platelets were only seen following the administration of 50 nm SiNPs. The direct addition of SiNPs to untreated mouse blood significantly induced in vitro platelet aggregation in a dose-dependent fashion, and these effects were more pronounced with 50 nm SiNPs. Both sizes of SiNPs increased lactate dehydrogenase activity and interleukin 1β concentration. However, tumor necrosis factor α concentration was only increased after the administration of 50 nm SiNPs. Nevertheless, plasma markers of oxidative stress, including 8-isoprostane, thiobarbituric acid reactive substances, catalase, and glutathione S-transferase, were not affected by SiNPs. The in vitro exposure of human umbilical vein endothelial cells to SiNPs showed a reduced cellular viability, and more potency was seen with 50 nm SiNPs. Both sizes of SiNPs caused a decrease in endothelium-dependent relaxation of isolated small mesenteric arteries. We conclude that amorphous SiNPs cause systemic inflammation and coagulation events, and alter vascular reactivity. Overall, the effects observed with 50 nm SiNPs were more pronounced than those with 500 nm SiNPs. These findings provide new insight into the deleterious effect of amorphous SiNPs on vascular homeostasis.
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Affiliation(s)
- Abderrahim Nemmar
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Sulayma Albarwani
- Department of Physiology, College of Medicine and Health Sciences, Sultan Qaboos University, Al-Khod, Sultanate of Oman
| | - Sumaya Beegam
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Priya Yuvaraju
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Javed Yasin
- Department of Internal Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Samir Attoub
- Department of Pharmacology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Badreldin H Ali
- Department of Pharmacology, College of Medicine and Health Sciences, Sultan Qaboos University, Al-Khod, Sultanate of Oman
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Nemmar A, Beegam S, Yuvaraju P, Yasin J, Fahim MA, Kazzam EE, Alhaddabi I, Ali BH. Potentiation of cisplatin-induced nephrotoxicity by repeated exposure to diesel exhaust particles: An experimental study in rats. Exp Biol Med (Maywood) 2014; 239:1036-1044. [DOI: 10.1177/1535370214530249] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Several epidemiological and clinical studies have shown that exposure to particulate air pollution is associated with increases in morbidity and mortality, and this is more evident in patients with renal diseases. However, the basis of the possible exacerbating effect of particulate air pollution on animal model of renal injury has received scant attention. Here, we assessed the effect of repeated exposure to diesel exhaust particles (DEP) on cisplatin (CP)-induced nephrotoxicity in rats. DEP (0.5 m/kg) was intratracheally (i.t.) instilled every second day for eight days (a total of five exposures). CP, 6 mg/kg was given 1 h before the third exposure to DEP. Two days following the last exposure to either DEP or saline (control), various renal endpoints were measured. Water intake, urine volume, and relative kidney weight were significantly increased in CP + DEP versus DEP and CP + saline versus saline. Plasma creatinine increased and creatinine clearance decreased in CP + DEP versus DEP and CP + saline versus saline. Interestingly, blood urea nitrogen, albumin concentrations, and gamma-glutamyl transpeptidase (GGT) activity in urine were significantly increased in DEP + CP compared with either DEP or saline + CP. The combination of DEP and CP enhanced kidney injury molecule-1, neutrophil gelatinase-associated lipocalin, 8-isoprostane and total nitric oxide in the kidney compared with either saline + CP or DEP. Similarly, systolic blood pressure was increased in CP + DEP versus CP + saline or DEP. The renal tubular necrosis observed in kidneys of CP-treated rats was aggravated by the combination of CP + DEP. We conclude that repeated exposure to DEP potentiated CP-induced nephrotoxicity. Our data provide experimental evidence that patients with kidney injury could be at higher risk than the general population.
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Affiliation(s)
- Abderrahim Nemmar
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, UAE
| | - Sumaya Beegam
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, UAE
| | - Priya Yuvaraju
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, UAE
| | - Javed Yasin
- Department of Internal Medicine, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, UAE
| | - Mohamed A Fahim
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, UAE
| | - Elsadig E Kazzam
- Department of Internal Medicine, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, UAE
| | - Ibrahim Alhaddabi
- Department of Pathology, Sultan Qaboos University Hospital, Muscat 123, Al-Khod, Sultanate of Oman
| | - Badreldin H Ali
- Department of Pharmacology and Clinical Pharmacy, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat 123, Al-Khod, Sultanate of Oman
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Zhang Y, Bai Y, Jia J, Gao N, Li Y, Zhang R, Jiang G, Yan B. Perturbation of physiological systems by nanoparticles. Chem Soc Rev 2014; 43:3762-809. [PMID: 24647382 DOI: 10.1039/c3cs60338e] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nanotechnology is having a tremendous impact on our society. However, societal concerns about human safety under nanoparticle exposure may derail the broad application of this promising technology. Nanoparticles may enter the human body via various routes, including respiratory pathways, the digestive tract, skin contact, intravenous injection, and implantation. After absorption, nanoparticles are carried to distal organs by the bloodstream and the lymphatic system. During this process, they interact with biological molecules and perturb physiological systems. Although some ingested or absorbed nanoparticles are eliminated, others remain in the body for a long time. The human body is composed of multiple systems that work together to maintain physiological homeostasis. The unexpected invasion of these systems by nanoparticles disturbs normal cell signaling, impairs cell and organ functions, and may even cause pathological disorders. This review examines the comprehensive health risks of exposure to nanoparticles by discussing how nanoparticles perturb various physiological systems as revealed by animal studies. The potential toxicity of nanoparticles to each physiological system and the implications of disrupting the balance among systems are emphasized.
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Affiliation(s)
- Yi Zhang
- Key Laboratory for Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
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Waly MI, Ali BH, Nemmar A. Acute effects of diesel exhaust particles and cisplatin on oxidative stress in cultured human kidney (HEK 293) cells, and the influence of curcumin thereon. Toxicol In Vitro 2013; 27:2299-304. [PMID: 24113306 DOI: 10.1016/j.tiv.2013.09.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 09/01/2013] [Accepted: 09/25/2013] [Indexed: 01/29/2023]
Abstract
Particulate air pollution with particle diameters less than 2.5μm contribute to respiratory and extra-respiratory morbidity and mortality. We have recently reported the first in vivo experimental evidence that Diesel exhaust particles (DEP) in the lung aggravated the renal, pulmonary, and systemic effects of cisplatin (CP)-induced acute renal failure in rats. This in vitro study sought to determine whether and to what extent does DEP exposure exacerbate the effects of CP-induced oxidative stress in human embryonic kidney (HEK-293) cells, and to examine if these effects could be mitigated/prevented with curcumin (the yellow pigment isolated from turmeric). Cells viability, cysteine uptake and oxidative stress indices [glutathione (GSH), total antioxidant capacity (TAC), and the activities of antioxidant enzymes (catalase; glutathione peroxidase; superoxide dismutase)] were evaluated in all study groups. DEP aggravated the CP- induced HEK-293 cells toxicity, as evidenced by decreasing cell viability and by inducing oxidative stress (GSH depletion, TAC impairment, and antioxidant enzymes inhibition). DEP, but not CP, significantly reduced cysteine uptake. Curcumin prevented the observed DEP and CP-induced cellular insults. These findings suggest that DEP augmented the CP-induced toxicity in HEK-293 cells. Curcumin exhibited a strong potential for protection against DEP and CP-induced cytotoxicity.
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Affiliation(s)
- Mostafa I Waly
- Department of Food Science and Nutrition, College of Agricultural and Marine Sciences, Sultan Qaboos University, P.O. Box 35 Al Khod, Oman
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Nemmar A, Yuvaraju P, Beegam S, John A, Raza H, Ali BH. Cardiovascular effects of nose-only water-pipe smoking exposure in mice. Am J Physiol Heart Circ Physiol 2013; 305:H740-6. [PMID: 23812392 DOI: 10.1152/ajpheart.00200.2013] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Water-pipe smoking (WPS) is a major type of smoking in Middle Eastern countries and is increasing in popularity in Western countries and is perceived as relatively safe. However, data on the adverse cardiovascular effects of WPS are scarce. Here, we assessed the cardiovascular effects of nose-only exposure to mainstream WPS generated by commercially available honey-flavored "moasel" tobacco in BALB/c mice. The duration of the session was 30 min/day for 1 mo. Control mice were exposed to air. WPS caused a significant increase of systolic blood pressure (SBP) in vivo (+13 mmHg) and plasma concentrations of IL-6 (+30%) but not that of TNF-α. Heart concentrations of IL-6 (+184%) and TNF-α (+54%) were significantly increased by WPS. Concentrations of ROS (+95%) and lipid peroxidation (+27%) were significantly increased, whereas those of GSH were decreased (-21%). WPS significantly shortened the thrombotic occlusion time in pial arterioles (-46%) and venules (40%). Plasma von Willebrand factor concentrations were significantly increased (+14%) by WPS. Erythrocyte numbers (+15%) and hematocrit (+17%) were significantly increased. Blood samples taken from mice exposed to WPS and exposed to ADP showed significant platelet aggregation compared with air-exposed mice. WPS caused a significant shortening of activated partial thromboplastin time (-45%) and prothrombin time (-13%). We conclude that 1-mo nose-only exposure to WPS increased SBP and caused cardiac inflammation, oxidative stress, and prothrombotic events. Our findings provide plausible elucidation that WPS is injurious to the cardiovascular system.
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Affiliation(s)
- Abderrahim Nemmar
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
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Recent advances in particulate matter and nanoparticle toxicology: a review of the in vivo and in vitro studies. BIOMED RESEARCH INTERNATIONAL 2013; 2013:279371. [PMID: 23865044 PMCID: PMC3705851 DOI: 10.1155/2013/279371] [Citation(s) in RCA: 179] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 05/08/2013] [Accepted: 05/22/2013] [Indexed: 12/11/2022]
Abstract
Epidemiological and clinical studies have linked exposure to particulate matter (PM) to adverse health effects, which may be registered as increased mortality and morbidity from various cardiopulmonary diseases. Despite the evidence relating PM to health effects, the physiological, cellular, and molecular mechanisms causing such effects are still not fully characterized. Two main approaches are used to elucidate the mechanisms of toxicity. One is the use of in vivo experimental models, where various effects of PM on respiratory, cardiovascular, and nervous systems can be evaluated. To more closely examine the molecular and cellular mechanisms behind the different physiological effects, the use of various in vitro models has proven to be valuable. In the present review, we discuss the current advances on the toxicology of particulate matter and nanoparticles based on these techniques.
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Impact of experimental type 1 diabetes mellitus on systemic and coagulation vulnerability in mice acutely exposed to diesel exhaust particles. Part Fibre Toxicol 2013; 10:14. [PMID: 23587270 PMCID: PMC3641025 DOI: 10.1186/1743-8977-10-14] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Accepted: 04/12/2013] [Indexed: 01/10/2023] Open
Abstract
Background Epidemiological evidence indicates that diabetic patients have increased susceptibility to adverse cardiovascular outcomes related to acute increases in exposures to particulate air pollution. However, mechanisms underlying these effects remain unclear. Methods To evaluate the possible mechanisms underlying these actions, we assessed the systemic effects of diesel exhaust particles (DEP) in control mice, and mice with streptozotocin–induced type 1 diabetes. Four weeks following induction of diabetes, the animals were intratracheally instilled (i.t.) with DEP (0.4 mg/kg) or saline, and several cardiovascular endpoints were measured 24 h thereafter. Results DEP caused leukocytosis and a significant increase in plasma C-reactive protein and 8-isoprostane concentrations in diabetic mice compared to diabetic mice exposed to saline or non-diabetic mice exposed to DEP. The arterial PO2 as well as the number of platelets and the thrombotic occlusion time in pial arterioles assessed in vivo were significantly decreased following the i.t. instillation of DEP in diabetic mice compared to diabetic mice exposed to saline or non-diabetic mice exposed to DEP. Both alanine aminotransferase and aspartate transaminase activities, as well as the plasma concentrations of plasminogen activator inhibitor and von Willebrand factor were significantly increased in DEP-exposed diabetic mice compared to diabetic mice exposed to saline or DEP-exposed non-diabetic mice. The in vitro addition of DEP (0.25-1 μg/ml) to untreated mouse blood significantly and dose-dependently induced in vitro platelet aggregation, and these effects were exacerbated in blood of diabetic mice. Conclusion This study has shown that systemic and coagulation events are aggravated by type 1 diabetes in mice, acutely exposed to DEP and has described the possible mechanisms for these actions that may also be relevant to the exacerbation of cardiovascular morbidity accompanying particulate air pollution in diabetic patients.
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Šimundić M, Drašler B, Šuštar V, Zupanc J, Štukelj R, Makovec D, Erdogmus D, Hägerstrand H, Drobne D, Kralj-Iglič V. Effect of engineered TiO2 and ZnO nanoparticles on erythrocytes, platelet-rich plasma and giant unilamelar phospholipid vesicles. BMC Vet Res 2013; 9:7. [PMID: 23311901 PMCID: PMC3549938 DOI: 10.1186/1746-6148-9-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 01/08/2013] [Indexed: 01/28/2023] Open
Abstract
Background Massive industrial production of engineered nanoparticles poses questions about health risks to living beings. In order to understand the underlying mechanisms, we studied the effects of TiO2 and ZnO agglomerated engineered nanoparticles (EPs) on erythrocytes, platelet-rich plasma and on suspensions of giant unilamelar phospholipid vesicles. Results Washed erythrocytes, platelet-rich plasma and suspensions of giant unilamelar phospholipid vesicles were incubated with samples of EPs. These samples were observed by different microscopic techniques. We found that TiO2 and ZnO EPs adhered to the membrane of washed human and canine erythrocytes. TiO2 and ZnO EPs induced coalescence of human erythrocytes. Addition of TiO2 and ZnO EPs to platelet-rich plasma caused activation of human platelets after 24 hours and 3 hours, respectively, while in canine erythrocytes, activation of platelets due to ZnO EPs occurred already after 1 hour. To assess the effect of EPs on a representative sample of giant unilamelar phospholipid vesicles, analysis of the recorded populations was improved by applying the principles of statistical physics. TiO2 EPs did not induce any notable effect on giant unilamelar phospholipid vesicles within 50 minutes of incubation, while ZnO EPs induced a decrease in the number of giant unilamelar phospholipid vesicles that was statistically significant (p < 0,001) already after 20 minutes of incubation. Conclusions These results indicate that TiO2 and ZnO EPs cause erythrocyte aggregation and could be potentially prothrombogenic, while ZnO could also cause membrane rupture.
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Affiliation(s)
- Metka Šimundić
- Biomedical Research Group, Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia
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Nemmar A, Subramaniyan D, Ali BH. Protective effect of curcumin on pulmonary and cardiovascular effects induced by repeated exposure to diesel exhaust particles in mice. PLoS One 2012; 7:e39554. [PMID: 22745783 PMCID: PMC3382128 DOI: 10.1371/journal.pone.0039554] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 05/27/2012] [Indexed: 12/21/2022] Open
Abstract
Particulate air pollution has been associated with increased risk of cardiopulmonary diseases. However, the underlying mechanisms are not fully understood. We have previously demonstrated that single dose exposure to diesel exhaust particle (DEP) causes lung inflammation and peripheral thrombotic events. Here, we exposed mice with repeated doses of DEP (15µg/animal) every 2nd day for 6 days (a total of 4 exposures), and measured several cardiopulmonary endpoints 48 h after the end of the treatments. Moreover, the potential protective effect of curcumin (the yellow pigment isolated from turmeric) on DEP-induced cardiopulmonary toxicity was assessed. DEP exposure increased macrophage and neutrophil numbers, tumor necrosis factor α (TNF α) in the bronchoalveolar lavage (BAL) fluid, and enhanced airway resistance to methacoline measured invasively using Flexivent. DEP also significantly increased plasma C-reactive protein (CRP) and TNF α concentrations, systolic blood pressure (SBP) as well as the pial arteriolar thrombosis. It also significantly enhanced the plasma D-dimer and plasminogen activator inhibitor-1 (PAI-1). Pretreatment with curcumin by oral gavage (45 mg/kg) 1h before exposure to DEP significantly prevented the influx of inflammatory cells and the increase of TNF α in BAL, and the increased airway resistance caused by DEP. Likewise, curcumin prevented the increase of SBP, CRP, TNF α, D-dimer and PAI-1. The thrombosis was partially but significantly mitigated. In conclusion, repeated exposure to DEP induced lung and systemic inflammation characterized by TNFα release, increased SBP, and accelerated coagulation. Our findings indicate that curcumin is a potent anti-inflammatory agent that prevents the release of TNFα and protects against the pulmonary and cardiovascular effects of DEP.
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Affiliation(s)
- Abderrahim Nemmar
- Department of Physiology, Faculty of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates.
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Toxico-/biokinetics of nanomaterials. Arch Toxicol 2012; 86:1021-60. [DOI: 10.1007/s00204-012-0858-7] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 04/12/2012] [Indexed: 01/29/2023]
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Nemmar A, Al-Salam S, Zia S, Marzouqi F, Al-Dhaheri A, Subramaniyan D, Dhanasekaran S, Yasin J, Ali BH, Kazzam EE. Contrasting actions of diesel exhaust particles on the pulmonary and cardiovascular systems and the effects of thymoquinone. Br J Pharmacol 2012; 164:1871-82. [PMID: 21501145 DOI: 10.1111/j.1476-5381.2011.01442.x] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AND PURPOSE Acute exposure to particulate air pollution has been linked to acute cardiopulmonary events, but the underlying mechanisms are uncertain. EXPERIMENTAL APPROACH We investigated the acute (at 4 and 18 h) effects of diesel exhaust particles (DEP) on cardiopulmonary parameters in mice and the protective effect of thymoquinone, a constituent of Nigella sativa. Mice were given, intratracheally, either saline (control) or DEP (30 µg·per mouse). KEY RESULTS At 18 h (but not 4 h) after giving DEP, there was lung inflammation and loss of lung function. At both 4 and 18 h, DEP caused systemic inflammation characterized by leucocytosis, increased IL-6 concentrations and reduced systolic blood pressure (SBP). Superoxide dismutase (SOD) activity was decreased only at 18 h. DEP reduced platelet numbers and aggravated in vivo thrombosis in pial arterioles. In vitro, addition of DEP (0.1-1 µg·mL(-1)) to untreated blood-induced platelet aggregation. Pretreatment of mice with thymoquinone prevented DEP-induced decrease of SBP and leucocytosis, increased IL-6 concentration and decreased plasma SOD activity. Thymoquinone also prevented the decrease in platelet numbers and the prothrombotic events but not platelet aggregation in vitro. CONCLUSIONS AND IMPLICATIONS At 4 h after DEP exposure, the cardiovascular changes did not appear to result from pulmonary inflammation but possibly from the entry of DEP and/or their associated components into blood. However, at 18 h, DEP induced significant changes in pulmonary and cardiovascular functions along with lung inflammation. Pretreatment with thymoquinone prevented DEP-induced cardiovascular changes.
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Affiliation(s)
- Abderrahim Nemmar
- Department of Physiology, Faculty of Medicine and Health Sciences, United Arab Emirates University, Al Ain, UAE.
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Nemmar A, Zia S, Subramaniyan D, Al-Amri I, Al Kindi MA, Ali BH. Interaction of diesel exhaust particles with human, rat and mouse erythrocytes in vitro. Cell Physiol Biochem 2012; 29:163-70. [PMID: 22415085 DOI: 10.1159/000337597] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2011] [Indexed: 12/31/2022] Open
Abstract
Inhaled ultrafine (nano) particles can translocate into the bloodstream and interact with circulatory cells causing systemic and cardiovascular events. To gain more insight into this potential mechanism, we studied the interaction of diesel exhaust particles (DEP) with human, rat and mouse erythrocytes in vitro. Incubation of erythrocytes with DEP (1, 10 or 100 μg/ml) for 30 min caused the highest hemolytic effect (up to 38%) in rats, compared to small but significant hemolysis in mice (up to 2.5%) and humans (up to 0.7%). Transmission electron microscopy of erythrocytes revealed the presence of variable degrees of ultrafine (nano)-sized aggregates of DEP either internalized and/or adsorbed onto the erythrocytes in the three species. A significant amount of DEP was found in rat and mouse (but not human) erythrocytes. Lipid erythrocyte susceptibility to in vitro peroxidation measured by malondialdehyde showed a significant and dose-dependent increase in erythrocytes of rats, but not humans or mice. Unlike in human erythrocytes, total antioxidant status (TAS) and superoxide dismutase (SOD) activity in rats were significantly and dose- dependently decreased. In mouse erythrocytes, DEP caused a decreased in SOD (at 10 μg/ml) and TAS (at 100 μg/ml) activities. In conclusion, DEP caused species-dependent erythrocyte hemolysis and oxidative stress, and were either taken up and/or adsorbed onto the red blood cells. Rat (and to a lesser degree mouse) erythrocytes were susceptible to DEP. Human erythrocytes showed the highest resistance to the observed effects. These species difference should be noted when using rats and mice blood as models for humans.
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Affiliation(s)
- Abderrahim Nemmar
- Department of Physiology, Faculty of Medicine and Health Sciences, United Arab Emirates University, Al Ain, UAE.
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Nemmar A, Subramaniyan D, Zia S, Yasin J, Ali BH. Airway resistance, inflammation and oxidative stress following exposure to diesel exhaust particle in angiotensin II-induced hypertension in mice. Toxicology 2011; 292:162-8. [PMID: 22214961 DOI: 10.1016/j.tox.2011.12.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 12/07/2011] [Accepted: 12/15/2011] [Indexed: 01/10/2023]
Abstract
Exposure to particulate matter is a risk factor for respiratory and cardiovascular diseases. However, the mechanisms underlying these effects are not well understood. Here, we compared the impact of diesel exhaust particles (DEP) on airway resistance, inflammation and oxidative stress in normal mice, or mice made hypertensive by implanting osmotic minipump infusing angiotensin II. On day 13 after the onset of infusion, angiotensin II induced significant increase in heart rate (P<0.05) and systolic blood pressure (P<0.0001). On the same day, mice were intratracheally instilled with either DEP (15 μg/mouse) or saline. Twenty-four hour later, the measurement of airway reactivity to methacholine (0-10mg/ml) in vivo by a forced oscillation technique showed a significant and dose dependent increase in airway resistance in normotensive mice exposed to DEP compared to those exposed to saline. In hypertensive mice, there was no difference in airway resistance in DEP versus saline exposed mice. However, following exposure to DEP, airway resistance significantly increased in normotensive versus hypertensive mice. Bronchoalveolar lavage (BAL) fluid analysis showed a significant increase in macrophage numbers in normotensive mice exposed to DEP compared to those exposed to saline, and to hypertensive mice exposed to DEP. Neutrophil numbers were significantly increased in both normotensive and hypertensive mice exposed to DEP compared with their respective control groups. Superoxide dismutase activity was significantly decreased following DEP exposure in both normotensive and hypertensive mice compared to their respective controls. However, total proteins, a marker for increase of epithelial permeability, and malondialdehyde, a reflection of lipid peroxidation, were only increased in normotensive mice exposed to DEP. Therefore, our data suggest that DEP do not aggravate airway resistance and inflammation in angiotensin II-induced hypertensive mice. On the contrary, at the dose of DEP and time point investigated, airway resistance, inflammation and oxidative stress are increased in normotensive compared to hypertensive mice.
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Affiliation(s)
- Abderrahim Nemmar
- Department of Physiology, Faculty of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666, Al Ain, United Arab Emirates
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Direct and indirect effects of particulate matter on the cardiovascular system. Toxicol Lett 2011; 208:293-9. [PMID: 22119171 DOI: 10.1016/j.toxlet.2011.11.008] [Citation(s) in RCA: 152] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 11/08/2011] [Accepted: 11/09/2011] [Indexed: 01/17/2023]
Abstract
Human exposure to particulate matter (PM) elicits a variety of responses on the cardiovascular system through both direct and indirect pathways. Indirect effects of PM on the cardiovascular system are mediated through the autonomic nervous system, which controls heart rate variability, and inflammatory responses, which augment acute cardiovascular events and atherosclerosis. Recent research demonstrates that PM also affects the cardiovascular system directly by entry into the systemic circulation. This process causes myocardial dysfunction through mechanisms of reactive oxygen species production, calcium ion interference, and vascular dysfunction. In this review, we will present key evidence in both the direct and indirect pathways, suggest clinical applications of the current literature, and recommend directions for future research.
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Langkulsen U, Vichit‐Vadakan N, Taptagaporn S. Safety and Health in the Petrochemical Industry in Map Ta Phut, Thailand. J Occup Health 2011; 53:384-92. [DOI: 10.1539/joh.11-0091-oa] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Uma Langkulsen
- Faculty of Public HealthThammasat UniversityRangsit CampusThailand
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Landen DD, Wassell JT, McWilliams L, Patel A. Coal dust exposure and mortality from ischemic heart disease among a cohort of U.S. coal miners. Am J Ind Med 2011; 54:727-33. [PMID: 21761428 DOI: 10.1002/ajim.20986] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/11/2011] [Indexed: 11/08/2022]
Abstract
BACKGROUND Particulate exposure from air pollution increases the risk of ischemic heart disease (IHD) mortality. Although coal miners are highly exposed to coal dust particulate, studies of IHD mortality risk among coal miners have had inconsistent results. Previous studies may have been biased by the healthy worker effect. METHODS We examined the dose-response relationship between cumulative coal dust exposure, coal rank, and IHD mortality among a cohort of underground coal miners who participated in the National Study of Coal Workers' Pneumoconiosis. RESULTS After adjusting for age, smoking, and body mass index, risk of IHD mortality increased at higher levels of coal dust exposure. Mortality risk was also associated with coal rank region. CONCLUSION There was an increased risk of mortality from IHD associated with cumulative exposure to coal dust, and with coal rank. The effect of coal rank may be due differences in the composition of coal mine dust particulate. The association of risk of IHD mortality with cumulative particulate exposure is consistent with air pollution studies.
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Affiliation(s)
- Deborah D Landen
- Office of Mine Safety and Health Research, National Institute for Occupational Safety and Health, Pittsburgh, Pennsylvania, USA.
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Zuurbier M, Hoek G, Oldenwening M, Meliefste K, Krop E, van den Hazel P, Brunekreef B. In-traffic air pollution exposure and CC16, blood coagulation, and inflammation markers in healthy adults. ENVIRONMENTAL HEALTH PERSPECTIVES 2011; 119:1384-9. [PMID: 21665568 PMCID: PMC3230432 DOI: 10.1289/ehp.1003151] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Accepted: 06/10/2011] [Indexed: 05/17/2023]
Abstract
BACKGROUND Exposure to traffic-related air pollution is a risk factor for cardiovascular events, probably involving mechanisms of inflammation and coagulation. Little is known about effects of the short exposures encountered while participating in traffic. OBJECTIVES The objective of the study was to examine effects of exposure of commuters to air pollution on cardiovascular biomarkers. METHODS Thirty-four healthy adult volunteers commuted for 2 hr by bus, car, or bicycle during the morning rush hour. During the commute, exposure to particle number, particulate matter (PM) ≤ 2.5 µm in aerodynamic diameter (PM2.5), PM ≤ 10 µm in diameter (PM10), and soot was measured. We estimated inhaled doses based on heart rate monitoring. Shortly before exposure and 6 hr after exposure, blood samples were taken and analyzed for CC16 (Clara cell protein 16), blood cell count, coagulation markers, and inflammation markers. Between June 2007 and June 2008, 352 pre- and postexposure blood samples were collected on 47 test days. We used mixed models to analyze the associations between exposure and changes in health parameters. RESULTS We observed no consistent associations between the air pollution exposures and doses and the various biomarkers that we investigated. CONCLUSIONS Air pollution exposure during commuting was not consistently associated with acute changes in inflammation markers, blood cell counts, or blood coagulation markers.
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Affiliation(s)
- Moniek Zuurbier
- Public Health Services Gelderland Midden, Arnhem, the Netherlands.
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Nemmar A, Zia S, Subramaniyan D, Fahim MA, Ali BH. Exacerbation of thrombotic events by diesel exhaust particle in mouse model of hypertension. Toxicology 2011; 285:39-45. [DOI: 10.1016/j.tox.2011.03.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 03/27/2011] [Accepted: 03/31/2011] [Indexed: 01/19/2023]
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Previtali E, Bucciarelli P, Passamonti SM, Martinelli I. Risk factors for venous and arterial thrombosis. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2011; 9:120-38. [PMID: 21084000 PMCID: PMC3096855 DOI: 10.2450/2010.0066-10] [Citation(s) in RCA: 152] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Accepted: 08/31/2010] [Indexed: 01/04/2023]
Affiliation(s)
- Emanuele Previtali
- A. Bianchi Bonomi Haemophilia and Thrombosis Centre, Department of Internal Medicine and Medical Specialties, IRCSS General Hospital, Policlinico, Mangiagalli and Regina Elena Foundation, Milan, Italy
| | - Paolo Bucciarelli
- A. Bianchi Bonomi Haemophilia and Thrombosis Centre, Department of Internal Medicine and Medical Specialties, IRCSS General Hospital, Policlinico, Mangiagalli and Regina Elena Foundation, Milan, Italy
| | - Serena M. Passamonti
- A. Bianchi Bonomi Haemophilia and Thrombosis Centre, Department of Internal Medicine and Medical Specialties, IRCSS General Hospital, Policlinico, Mangiagalli and Regina Elena Foundation, Milan, Italy
| | - Ida Martinelli
- A. Bianchi Bonomi Haemophilia and Thrombosis Centre, Department of Internal Medicine and Medical Specialties, IRCSS General Hospital, Policlinico, Mangiagalli and Regina Elena Foundation, Milan, Italy
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Somers CM. Ambient air pollution exposure and damage to male gametes: human studies andin situ‘sentinel’ animal experiments. Syst Biol Reprod Med 2011; 57:63-71. [DOI: 10.3109/19396368.2010.500440] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Zhao J, Castranova V. Toxicology of nanomaterials used in nanomedicine. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2011; 14:593-632. [PMID: 22008094 DOI: 10.1080/10937404.2011.615113] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
With the development of nanotechnology, nanomaterials are being widely used in many industries as well as in medicine and pharmacology. Despite the many proposed advantages of nanomaterials, increasing concerns have been expressed on their potential adverse human health effects. In recent years, application of nanotechnology in medicine has been defined as nanomedicine. Techniques in nanomedicine make it possible to deliver therapeutic agents into targeted specific cells, cellular compartments, tissues, and organs by using nanoparticulate carriers. Because nanoparticles possess different physicochemical properties than their fine-sized analogues due to their extremely small size and large surface area, they need to be evaluated separately for toxicity and adverse health effects. In addition, in the field of nanomedicine, intravenous and subcutaneous injections of nanoparticulate carriers deliver exogenous nanoparticles directly into the human body without passing through the normal absorption process. These nanoparticulate carriers themselves may be responsible for toxicity and interaction with biological macromolecules within the human body. Second, insoluble nanoparticulate carriers may accumulate in human tissues or organs. Therefore, it is necessary to address the potential health and safety implications of nanomaterials used in nanomedicine. Toxicological studies for biosafety evaluation of these nanomaterials will be important for the continuous development of nanomedical science. This review summarizes the current knowledge on toxicology of nanomaterials, particularly on those used in nanomedicine.
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Affiliation(s)
- Jinshun Zhao
- Public Health Department of Medical School, Ningbo University, Ningbo, Zhejiang, P. R. China
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Péry ARR, Brochot C, Hoet PHM, Nemmar A, Bois FY. Development of a physiologically based kinetic model for 99m-technetium-labelled carbon nanoparticles inhaled by humans. Inhal Toxicol 2010; 21:1099-107. [PMID: 19814607 DOI: 10.3109/08958370902748542] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Particulate air pollution is associated with respiratory and cardiovascular morbidity and mortality. Recent studies investigated whether and to which extent inhaled ultrafine particles are able to translocate into the bloodstream in humans. However, their conclusions were conflicting. We developed a physiologically based kinetic model for (99m)technetium-labelled carbon nanoparticles (Technegas). The model was designed to analyse imaging data. It includes different translocation rates and kinetics for free technetium, and small and large technetium-labelled particles. It was calibrated with data from an experiment designed to assess the fate of nanoparticles in humans after inhalation of Technegas. The data provided time courses of radioactivity in the liver, stomach, urine, and blood. Parameter estimation was performed in a Bayesian context with Markov chain Monte Carlo (MCMC) techniques. Our analysis points to a likely translocation of particle-bound technetium from lung to blood, at a rate about twofold lower than the transfer rate of free technetium. Notably, restricting the model so that only free technetium would have been able to reach blood circulation resulted in much poorer fits to the experimental data. The percentage of small particles able to translocate was estimated at 12.7% of total particles. The percentage of unbound technetium was estimated at 6.7% of total technetium. To our knowledge, our model is the first PBPK model able to use imaging data to describe the absorption and distribution of nanoparticles. We believe that our modeling approach using Bayesian and MCMC techniques provides a reasonable description on which to base further model refinement.
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