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Nishita‐Hara C, Kobayashi H, Hara K, Hayashi M. Dithiothreitol-Measured Oxidative Potential of Reference Materials of Mineral Dust: Implications for the Toxicity of Mineral Dust Aerosols in the Atmosphere. GEOHEALTH 2023; 7:e2022GH000736. [PMID: 37426691 PMCID: PMC10326488 DOI: 10.1029/2022gh000736] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 04/06/2023] [Accepted: 05/04/2023] [Indexed: 07/11/2023]
Abstract
Oxidative stress is a mechanism that might raise the toxicity of mineral dust aerosols. We evaluated the oxidative potential (OP) of four reference materials (RMs) of mineral dusts using dithiothreitol assay. The OP of the water-soluble fraction of the dust RMs accounts for 40%-70% of the OP of the total fraction. The values of total and water-soluble OP normalized by the surface area of insoluble particles showed agreement among the different dust RMs. The surface area of insoluble dust particles was therefore inferred as an important factor affecting the OP of mineral dust. Using the relation between total OP and the surface area of insoluble particles of the dust RMs, we estimated the total OPs of fine and coarse atmospheric mineral dust aerosols assuming a typical particle size distribution of Asian dust aerosols observed in Japan. Mass-normalized total OPs were estimated at 44 and 23 pmol min-1 μg-1 for fine and coarse atmospheric mineral dust particles. They closely approximate the values observed for urban aerosols in Japan, which suggests that mineral dust plume advection can lead to a marked increase in human exposure to redox-active aerosols, even far downwind from mineral dust source regions.
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Affiliation(s)
- Chiharu Nishita‐Hara
- Fukuoka Institute for Atmospheric Environment and HealthFukuoka UniversityFukuokaJapan
| | - Hiroshi Kobayashi
- Division of Life and Environmental SciencesUniversity of YamanashiKofuJapan
| | - Keiichiro Hara
- Fukuoka Institute for Atmospheric Environment and HealthFukuoka UniversityFukuokaJapan
- Department of Earth System ScienceFaculty of ScienceFukuoka UniversityFukuokaJapan
| | - Masahiko Hayashi
- Fukuoka Institute for Atmospheric Environment and HealthFukuoka UniversityFukuokaJapan
- Department of Earth System ScienceFaculty of ScienceFukuoka UniversityFukuokaJapan
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2
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Pahimi N, Rasool AHG, Sanip Z, Bokti NA, Yusof Z, W. Isa WYH. An Evaluation of the Role of Oxidative Stress in Non-Obstructive Coronary Artery Disease. J Cardiovasc Dev Dis 2022; 9:jcdd9020051. [PMID: 35200704 PMCID: PMC8878238 DOI: 10.3390/jcdd9020051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 11/16/2022] Open
Abstract
Approximately half of all women presenting to the emergency department with angina chest pain do not have obstructive coronary artery disease (CAD) on coronary angiography. This condition is termed non-obstructive coronary artery disease (NOCAD), and includes ischemia with no obstructive coronary artery disease (INOCA) and myocardial infarction with non-obstructive coronary arteries (MINOCA). Oxidative stress has been reported to be involved in the development and progression of CAD. However, a scarcity of studies has assessed a correlation between oxidative stress and NOCAD. Thus, a literature review was performed of available reports on the role of oxidative stress in NOCAD. Possible mechanisms involved in oxidative stress that may contribute to NOCAD were identified and evaluated. A key finding of this literature review was that oxidative stress caused vasoconstriction and endothelial damage, and this results in coronary microvascular dysfunction and vasospasm, which, in turn, lead to the pathogenesis of NOCAD.
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Affiliation(s)
- Nurnajwa Pahimi
- Pharmacology Vascular Laboratory, Department of Pharmacology, School of Medical Sciences, Universiti Sains Malaysia, Kota Bharu 16150, Malaysia; (N.P.); (A.H.G.R.)
- Cardiology Unit, Department of Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia; (N.A.B.); (Z.Y.)
| | - Aida Hanum Ghulam Rasool
- Pharmacology Vascular Laboratory, Department of Pharmacology, School of Medical Sciences, Universiti Sains Malaysia, Kota Bharu 16150, Malaysia; (N.P.); (A.H.G.R.)
- Department of Internal Medicine, Hospital Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia
| | - Zulkefli Sanip
- Central Research Laboratory, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia;
| | - Nur Adilah Bokti
- Cardiology Unit, Department of Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia; (N.A.B.); (Z.Y.)
- Department of Internal Medicine, Hospital Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia
| | - Zurkurnai Yusof
- Cardiology Unit, Department of Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia; (N.A.B.); (Z.Y.)
- Department of Internal Medicine, Hospital Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia
| | - W. Yus Haniff W. Isa
- Cardiology Unit, Department of Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia; (N.A.B.); (Z.Y.)
- Department of Internal Medicine, Hospital Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia
- Correspondence: ; Tel.: +60-9767-3987
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3
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Nagahawatta DP, Kim HS, Jee YH, Jayawardena TU, Ahn G, Namgung J, Yeo IK, Sanjeewa KKA, Jeon YJ. Sargachromenol Isolated from Sargassum horneri Inhibits Particulate Matter-Induced Inflammation in Macrophages through Toll-like Receptor-Mediated Cell Signaling Pathways. Mar Drugs 2021; 20:28. [PMID: 35049883 PMCID: PMC8779987 DOI: 10.3390/md20010028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 12/22/2021] [Accepted: 12/22/2021] [Indexed: 11/28/2022] Open
Abstract
Sargassum horneri is an invasive brown seaweed that grows along the shallow coastal areas of the Korean peninsula, which are potentially harmful to fisheries and natural habitats in the areas where it is accumulated. Therefore, the author attempted to evaluate the anti-inflammatory mechanism of Sargachromenol isolated from S. horneri against particulate matter (PM)-stimulated RAW 264.7 macrophages. PM is a potent inducer of respiratory diseases such as lung dysfunctions and cancers. In the present study, the anti-inflammatory properties of Sargachromenol were validated using enzyme-linked immunosorbent assay (ELISA), Western blots, and RT-qPCR experiments. According to the results, Sargachromenol significantly downregulated the PM-induced proinflammatory cytokines, Prostaglandin E2 (PGE2), and Nitric Oxide (NO) secretion via blocking downstream activation of Toll-like receptor (TLR)-mediated nuclear factor kappa B (NF-κB) and MAPKs phosphorylation. Thus, Sargachromenol is a potential candidate for innovation in various fields including pharmaceuticals, cosmeceuticals, and functional food.
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Affiliation(s)
- D. P. Nagahawatta
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; (D.P.N.); (T.U.J.); (I.-K.Y.)
| | - Hyun-Soo Kim
- Department of Applied Research, National Marine Biodiversity Institute of Korea, 75, Jangsan-ro 101-gil, Janghang-eup, Seocheon 33662, Korea;
| | - Young-Heun Jee
- Department of Veterinary Medicine and Veterinary Medical Research Institute, Jeju National University, Jeju 690-756, Korea;
| | - Thilina U. Jayawardena
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; (D.P.N.); (T.U.J.); (I.-K.Y.)
| | - Ginnae Ahn
- Department of Food Technology and Nutrition, Chonnam National University, Yeosu 59626, Korea;
| | - Jin Namgung
- Graduate School of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido 041-8611, Japan;
| | - In-Kyu Yeo
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; (D.P.N.); (T.U.J.); (I.-K.Y.)
| | - K. K. Asanka Sanjeewa
- Department of Biosystems Technology, Faculty of Technology, University of Sri Jayewardenepura, Pitipana, Homagama 10206, Sri Lanka
| | - You-Jin Jeon
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; (D.P.N.); (T.U.J.); (I.-K.Y.)
- Marine Science Institute, Jeju National University, Jeju 63333, Korea
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4
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Ardon-Dryer K, Mock C, Reyes J, Lahav G. The effect of dust storm particles on single human lung cancer cells. ENVIRONMENTAL RESEARCH 2020; 181:108891. [PMID: 31740036 PMCID: PMC6982605 DOI: 10.1016/j.envres.2019.108891] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 10/31/2019] [Accepted: 11/01/2019] [Indexed: 05/10/2023]
Abstract
Exposure to dust particles during dust storms can lead to respiratory problems, diseases, and even death. The effect of dust particles at the cellular level is poorly understood. In this study, we investigated the impact that dust storm particles (Montmorillonite) have on human lung epithelial cells (A549) at the single cell level. Using live-cell imaging, we continuously followed individual cells after exposure to a wide range of concentrations of dust particles. We monitored the growth trajectory of each cell including number and timing of divisions, interaction with the dust particles, as well as time and mechanism of cell death. We found that individual cells show different cellular fates (survival or death) even in response to the same dust concentration. Cells that died interacted with dust particles for longer times, and engulfed more dust particles, compared with surviving cells. While higher dust concentrations reduced viability in a dose-dependent manner, the effect on cell death was non-monotonic, with intermediate dust concentration leading to a larger fraction of dying cells compared to lower and higher concentrations. This non-monotonic relationship was explained by our findings that high dust concentrations inhibit cell proliferation. Using cellular morphological features, supported by immunoblots and proinflammatory cytokines, we determined that apoptosis is the dominant death mechanism at low dust concentrations, while higher dust concentrations activate necrosis. Similar single cell approaches can serve as a baseline for evaluating other aerosol types that will improve our understanding of the health-related consequences of exposure to dust storms.
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Affiliation(s)
- Karin Ardon-Dryer
- Department of System Biology Harvard Medical School Harvard University, 200 Longwood Avenue Warren Alpert Building, Harvard Medical School, Boston, MA, 02115, USA; Department of Geosciences, Atmospheric Science Group, Texas Tech University, 3003 15th Street Department of Geosciences, Atmospheric Science Group, Texas Tech University, Lubbock, TX, 79409, USA.
| | - Caroline Mock
- Department of System Biology Harvard Medical School Harvard University, 200 Longwood Avenue Warren Alpert Building, Harvard Medical School, Boston, MA, 02115, USA
| | - Jose Reyes
- Department of System Biology Harvard Medical School Harvard University, 200 Longwood Avenue Warren Alpert Building, Harvard Medical School, Boston, MA, 02115, USA
| | - Galit Lahav
- Department of System Biology Harvard Medical School Harvard University, 200 Longwood Avenue Warren Alpert Building, Harvard Medical School, Boston, MA, 02115, USA
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5
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Ishii M, Seki T, Kaikita K, Sakamoto K, Nakai M, Sumita Y, Nishimura K, Miyamoto Y, Noguchi T, Yasuda S, Tsutsui H, Komuro I, Saito Y, Ogawa H, Tsujita K, Kawakami K. Short-term exposure to desert dust and the risk of acute myocardial infarction in Japan: a time-stratified case-crossover study. Eur J Epidemiol 2020; 35:455-464. [PMID: 31950372 DOI: 10.1007/s10654-020-00601-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Accepted: 01/08/2020] [Indexed: 01/19/2023]
Abstract
Particulate matter from natural sources such as desert dust causes harmful effects for health. Asian dust (AD) increases the risk of acute myocardial infarction (AMI). However, little is known about the risk of myocardial infarction with nonobstructive coronary arteries (MINOCA), compared to myocardial infarction with coronary artery disease (MI-CAD). Using a time-stratified case-crossover design and conditional logistic regression models, the association between short-term exposure to AD whereby decreased visibility (< 10 km) observed at each monitoring station nearest to the hospitals was used for exposure measurements and admission for AMI in the spring was investigated using a nationwide administrative database between April 2012 and March 2016. According to presence of revascularization and coronary atherosclerosis, AMI patients (n = 30,435) were divided into 2 subtypes: MI-CAD (n = 27,202) or MINOCA (n = 3233). The single lag day-2 was used in AD exposure based on the lag effect analysis. The average level of meteorological variables and co-pollutants on the 3 days prior to the case/control days were used as covariates. The occurrence of AD events 2 days before the admission was associated with admission for MINOCA after adjustment for meteorological variables [odds ratio 1.65; 95% confidence interval (CI) 1.18-2.29], while the association was not observed in MI-CAD. The absolute risk difference of MINOCA admission was 1.79 (95% CI 1.21-2.38) per 100,000 person-year. These associations between AD exposure and the admission for MINOCA remained unchanged in two-pollutant models. This study provides evidence that short-term exposure to AD is associated with a higher risk of MINOCA, but not MI-CAD.
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Affiliation(s)
- Masanobu Ishii
- Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.,Department of Pharmacoepidemiology, Graduate School of Medical and Public Health, Kyoto University, Yoshida, Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan.,National Cerebral and Cardiovascular Center, Suita, Japan
| | - Tomotsugu Seki
- Department of Pharmacoepidemiology, Graduate School of Medical and Public Health, Kyoto University, Yoshida, Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Koichi Kaikita
- Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kenji Sakamoto
- Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | | | - Yoko Sumita
- National Cerebral and Cardiovascular Center, Suita, Japan
| | | | | | - Teruo Noguchi
- National Cerebral and Cardiovascular Center, Suita, Japan
| | - Satoshi Yasuda
- National Cerebral and Cardiovascular Center, Suita, Japan
| | | | - Issei Komuro
- Graduate School of Medicine and Faculty of Medicine, University of Tokyo, Tokyo, Japan
| | - Yoshihiko Saito
- School of Medicine, Nara Medical University, Kashihara, Japan
| | - Hisao Ogawa
- National Cerebral and Cardiovascular Center, Suita, Japan
| | - Kenichi Tsujita
- Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Koji Kawakami
- Department of Pharmacoepidemiology, Graduate School of Medical and Public Health, Kyoto University, Yoshida, Konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan.
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6
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Fei YX, Zhao B, Yin QY, Qiu YY, Ren GH, Wang BW, Wang YF, Fang WR, Li YM. Ma Xing Shi Gan Decoction Attenuates PM2.5 Induced Lung Injury via Inhibiting HMGB1/TLR4/NFκB Signal Pathway in Rat. Front Pharmacol 2019; 10:1361. [PMID: 31798456 PMCID: PMC6868102 DOI: 10.3389/fphar.2019.01361] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 10/28/2019] [Indexed: 12/31/2022] Open
Abstract
Ma Xing Shi Gan Decoction (MXD), a classical traditional Chinese medicine prescription, is widely used for the treatment of upper respiratory tract infection. However, the effect of MXD against particulate matters with diameter of less than 2.5 μm (PM2.5) induced lung injury remains to be elucidated. In this study, rats were stimulated with PM2.5 to induce lung injury. MXD was given orally once daily for five days. Lung tissues were harvested to assess pathological changes and edema. Myeloperoxidase (MPO) activity and malonaldehyde (MDA) content in lung were determined to evaluate the degree of injury. To assess the barrier disruption, the bronchoalveolar lavage fluid (BALF) was collected to determine the total protein content and count the number of neutrophils and macrophages. For evaluating the activation of macrophage in lung tissue, CD68 was detected using immunohistochemistry (IHC). The levels of inflammatory factors including tumor necrosis factor-alpha (TNF-α), interleukin-1beta (IL-1β), and interleukin-6 (IL-6) in BALF and serum were measured. In vitro, a PM2.5-activated RAW 264.7 macrophages inflammatory model was introduced. To evaluate the protective effect of MXD-medicated serum, the cell viability and the release of inflammatory factors were measured. The effects of MXD on the High mobility group box-1/Toll-like receptor 4/Nuclear factor-kappa B (HMGB1/TLR4/NFκB) pathway in lung tissue and RAW 264.7 cells were assessed by Western blot. For further confirming the protective effect of MXD was mediated by inhibiting the HMGB1/TLR4/NFκB pathway, RAW 264.7 cells were incubated with MXD-medicated serum alone or MXD-medicated serum plus recombinant HMGB1 (rHMGB1). MXD significantly ameliorated the lung injury in rats, as evidenced by decreases in the pathological score, lung edema, MPO activity, MDA content, CD68 positive macrophages number, disruption of alveolar capillary barrier and the levels of inflammatory factors. In vitro, MXD-medicated serum increased cell viability and inhibited the release of inflammatory cytokines. Furthermore, MXD treatment was found to inhibit HMGB1/TLR4/NFκB signal pathway both in vivo and in vitro. Moreover, the protection of MXD could be reversed by rHMGB1 in RAW 264.7. Taken together, these results suggest MXD protects rats from PM2.5 induced acute lung injury, possibly through the modulation of HMGB1/TLR4/NFκB pathway and inflammatory responses.
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Affiliation(s)
- Yu-Xiang Fei
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Bo Zhao
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Qi-Yang Yin
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Yan-Ying Qiu
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Guang-Hui Ren
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Bo-Wen Wang
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Ye-Fang Wang
- Department of Pediatrics, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing, China
| | - Wei-Rong Fang
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Yun-Man Li
- State Key Laboratory of Natural Medicines, School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
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7
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Michikawa T, Yamazaki S, Shimizu A, Nitta H, Kato K, Nishiwaki Y, Morokuma S. Exposure to Asian dust within a few days of delivery is associated with placental abruption in Japan: a case-crossover study. BJOG 2019; 127:335-342. [PMID: 31654606 DOI: 10.1111/1471-0528.15999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2019] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Asian dust is a natural phenomenon in which dust particles are transported from desert areas in China and Mongolia to East Asia. Short-term exposure to Asian dust has been associated with cardiovascular disease through mechanisms such as systemic inflammation. Because inflammation is a potential trigger of placental abruption, exposure may also lead to abruption. We examined whether exposure to Asian dust was associated with abruption. DESIGN A bi-directional, time-stratified case-crossover design. SETTING AND POPULATION From the Japan Perinatal Registry Network database, we identified 3014 patients who delivered singleton births in hospitals in nine Japanese prefectures from 2009 to 2014 with a diagnosis of placental abruption. METHODS Asian dust levels were measured at Light Detection and Ranging monitoring stations, and these measurements were used to define the Asian dust days. As there was no information on the onset day of abruption, we assumed this day was the day before delivery (lag1). MAIN OUTCOME MEASURES Placental abruption. RESULTS During the study period, the Asian dust days ranged from 15 to 71 days, depending on the prefecture. The adjusted odds ratio of placental abruption associated with exposure to Asian dust was 1.4 (95% confidence interval = 1.0, 2.0) for cumulative lags of 1-2 days. Even after adjustment for co-pollutant exposures, this association did not change substantially. CONCLUSIONS In this Japanese multi-area study, exposure to Asian dust was associated with an increased risk of placental abruption. TWEETABLE ABSTRACT Exposure to environmental factors such as Asian dust may be a trigger of placental abruption.
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Affiliation(s)
- T Michikawa
- Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo, Japan.,Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - S Yamazaki
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - A Shimizu
- Centre for Regional Environmental Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - H Nitta
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - K Kato
- Department of Obstetrics and Gynaecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y Nishiwaki
- Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo, Japan
| | - S Morokuma
- Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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8
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Nishita‐Hara C, Hirabayashi M, Hara K, Yamazaki A, Hayashi M. Dithiothreitol-Measured Oxidative Potential of Size-Segregated Particulate Matter in Fukuoka, Japan: Effects of Asian Dust Events. GEOHEALTH 2019; 3:160-173. [PMID: 32159038 PMCID: PMC7007159 DOI: 10.1029/2019gh000189] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 03/13/2019] [Indexed: 05/03/2023]
Abstract
Oxidative potential is an important property of particulate matter (PM) that has been regarded as a more health-relevant metric than PM mass. We investigated the oxidative potential of size-segregated PM and effects of Asian dust events in Fukuoka, western Japan. Aerosol particles with diameters smaller and larger than 2.5 μm (fine and coarse particles, respectively) were collected continually from 16 March through 26 May 2016. The oxidative potential was analyzed using dithiothreitol (DTT) assay; chemical components of PM were also found. Air-volume normalized oxidative potential quantified by DTT assay (DTTv) was significantly higher during Asian dust events than during nondust-event days. The mean DTTv of fine and coarse particles during Asian dust events were, respectively, 1.5 and 2.7 times higher than that during nonevent days. DTTv of fine particles was highly correlated with elements dominated by anthropogenic combustion sources and with the elements emitted from multiple sources including mineral dust and combustion sources. DTTv of coarse particles strongly correlated with the mineral dust derived elements, suggesting concentration of mineral dust particles as an important controlling factor especially for the oxidative potential of the coarse particles. We estimated the contributions of water-soluble transition metals to the oxidative potential of PM. Water-soluble transition metals (mainly Cu and Mn) can explain only approximately 37% and 60% of the measured oxidative potential of fine and coarse particles, respectively, suggesting substantial contributions of aerosol components other than water-soluble transition metals such as quinones and insoluble minerals.
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Affiliation(s)
- Chiharu Nishita‐Hara
- Fukuoka Institute for Atmospheric Environment and HealthFukuoka UniversityFukuokaJapan
| | | | - Keiichiro Hara
- Fukuoka Institute for Atmospheric Environment and HealthFukuoka UniversityFukuokaJapan
- Faculty of ScienceFukuoka UniversityFukuokaJapan
| | | | - Masahiko Hayashi
- Fukuoka Institute for Atmospheric Environment and HealthFukuoka UniversityFukuokaJapan
- Faculty of ScienceFukuoka UniversityFukuokaJapan
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9
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Williams LJ, Zosky GR. The Inflammatory Effect of Iron Oxide and Silica Particles on Lung Epithelial Cells. Lung 2019; 197:199-207. [DOI: 10.1007/s00408-019-00200-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 02/06/2019] [Indexed: 12/31/2022]
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10
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Lee DU, Ji MJ, Kang JY, Kyung SY, Hong JH. Dust particles-induced intracellular Ca 2+ signaling and reactive oxygen species in lung fibroblast cell line MRC5. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2017; 21:327-334. [PMID: 28461775 PMCID: PMC5409120 DOI: 10.4196/kjpp.2017.21.3.327] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 12/28/2016] [Accepted: 01/05/2017] [Indexed: 02/07/2023]
Abstract
Epidemiologic interest in particulate matter (PM) is growing particularly because of its impact of respiratory health. It has been elucidated that PM evoked inflammatory signal in pulmonary epithelia. However, it has not been established Ca2+ signaling mechanisms involved in acute PM-derived signaling in pulmonary fibroblasts. In the present study, we explored dust particles PM modulated intracellular Ca2+ signaling and sought to provide a therapeutic strategy by antagonizing PM-induced intracellular Ca2+ signaling in human lung fibroblasts MRC5 cells. We demonstrated that PM10, less than 10 µm, induced intracellular Ca2+ signaling, which was mediated by extracellular Ca2+. The PM10-mediated intracellular Ca2+ signaling was attenuated by antioxidants, phospholipase blockers, polyADPR polymerase 1 inhibitor, and transient receptor potential melastatin 2 (TRPM2) inhibitors. In addition, PM-mediated increases in reactive oxygen species were attenuated by TRPM2 blockers, clotrimazole (CLZ) and N-(p-amylcinnamoyl) anthranilic acid (ACA). Our results showed that PM10 enhanced reactive oxygen species signal by measuring DCF fluorescence and the DCF signal attenuated by both TRPM2 blockers CLZ and ACA. Here, we suggest functional inhibition of TRPM2 channels as a potential therapeutic strategy for modulation of dust particle-mediated signaling and oxidative stress accompanying lung diseases.
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Affiliation(s)
- Dong Un Lee
- Department of Physiology, College of Medicine, Gachon University, Lee Gil Ya Cancer and Diabetes Institute, Incheon 21999, Korea
| | - Min Jeong Ji
- Department of Physiology, College of Medicine, Gachon University, Lee Gil Ya Cancer and Diabetes Institute, Incheon 21999, Korea
| | - Jung Yun Kang
- Department of Oral Biology, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul 03722, Korea
| | - Sun Young Kyung
- Division of Pulmonary, Allergy and Critical Care Medicine, Gachon University, Gil Medical Center, Incheon 21565, Korea
| | - Jeong Hee Hong
- Department of Physiology, College of Medicine, Gachon University, Lee Gil Ya Cancer and Diabetes Institute, Incheon 21999, Korea
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11
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Pardo M, Katra I, Schaeur JJ, Rudich Y. Mitochondria-mediated oxidative stress induced by desert dust in rat alveolar macrophages. GEOHEALTH 2017; 1:4-16. [PMID: 32158977 PMCID: PMC7007135 DOI: 10.1002/2016gh000017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/25/2016] [Accepted: 01/18/2017] [Indexed: 05/10/2023]
Abstract
Exposure to ambient particulate matter (PM), including PM from resuspension of soils and dusts, increases the risk for respiratory diseases. However, the exact mechanism of PM-mediated damage to the lungs remains unclear. Due to recent increases in the frequency of dust storms in many areas, we examined the cytotoxic effects of soil-dust samples collected in an arid zone in Israel on rat lung macrophages. The desert soil contains soil crusts and low levels of toxic metal content. Exposure of cells to water extracts from the dust samples caused significant reduction in the concentration of live cells and overall cell viability. The dust samples induced cell death through apoptosis, mitochondrial dysfunction, and increased mitochondrial lipid peroxidation. The dust samples generated more reactive oxygen species (ROS) compared to control-treated samples and National Institute of Standards and Technology San Joaquin Valley standard reference material. To assess whether the oxidative imbalance induced by dust extract also interferes with the antioxidant defense, we evaluated phase II detoxifying and antioxidant enzymes, which are Nrf2 classical targets. The Nrf2 transcription factor is a master regulator of cellular adaptation to stress. The dust extracts produced a significant increase in phase II detoxifying genes. This work suggests that the health-related injury observed in rat lung cells exposed to dust extracts is associated with ROS generation, mitochondrial dysfunction, mitochondrial lipid peroxidation, and cellular antioxidant imbalance. Damage to lung mitochondria may be an important mechanism by which dust-containing bacterial material induces lung injury upon inhalation.
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Affiliation(s)
- Michal Pardo
- Department of Earth and Planetary SciencesWeizmann Institute of ScienceRehovotIsrael
| | - Itzhak Katra
- Department of Geography and Environmental DevelopmentBen‐Gurion University of the NegevBeershebaIsrael
| | - James J. Schaeur
- Environmental Chemistry and Technology ProgramUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Yinon Rudich
- Department of Earth and Planetary SciencesWeizmann Institute of ScienceRehovotIsrael
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A Systematic Review of Global Desert Dust and Associated Human Health Effects. ATMOSPHERE 2016. [DOI: 10.3390/atmos7120158] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Toxicoproteomic approaches for analysis of microbial community inhabiting Asian dust particles. Mol Cell Toxicol 2015. [DOI: 10.1007/s13273-015-0028-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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