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Mokhtar SBA, Viljoen J, van der Kallen CJH, Berendschot TTJM, Dagnelie PC, Albers JD, Soeterboek J, Scarpa F, Colonna A, van der Heide FCT, van Greevenbroek MMJ, Bosm H, Kroon AA, Nuijts RMMA, Gijs M, Lakerveld J, Malik RA, Webers CAB, Stehouwer CDA, Koster A. Greater exposure to PM 2.5 and PM 10 was associated with lower corneal nerve measures: the Maastricht study - a cross-sectional study. Environ Health 2024; 23:70. [PMID: 39232744 PMCID: PMC11375839 DOI: 10.1186/s12940-024-01110-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 08/26/2024] [Indexed: 09/06/2024]
Abstract
BACKGROUND Epidemiological and toxicological studies indicate that increased exposure to air pollutants can lead to neurodegenerative diseases. To further confirm this relationship, we evaluated the association between exposure to ambient air pollutants and corneal nerve measures as a surrogate for neurodegeneration, using corneal confocal microscopy. METHODS We used population-based observational cross-sectional data from The Maastricht Study including N = 3635 participants (mean age 59.3 years, 51.6% were women, and 19.9% had type 2 diabetes) living in the Maastricht area. Using the Geoscience and hEalth Cohort COnsortium (GECCO) data we linked the yearly average exposure levels of ambient air pollutants at home address-level [particulate matter with diameters of ≤ 2.5 µm (PM2.5), and ≤ 10.0 µm (PM10), nitrogen dioxide (NO2), and elemental carbon (EC)]. We used linear regression analysis to study the associations between Z-score for ambient air pollutants concentrations (PM2.5, PM10, NO2, and EC) and Z-score for individual corneal nerve measures (corneal nerve bifurcation density, corneal nerve density, corneal nerve length, and fractal dimension). RESULTS After adjustment for potential confounders (age, sex, level of education, glucose metabolism status, corneal confocal microscopy lag time, inclusion year of participants, smoking status, and alcohol consumption), higher Z-scores for PM2.5 and PM10 were associated with lower Z-scores for corneal nerve bifurcation density, nerve density, nerve length, and nerve fractal dimension [stβ (95% CI): PM2.5 -0.10 (-0.14; -0.05), -0.04 (-0.09; 0.01), -0.11 (-0.16; -0.06), -0.20 (-0.24; -0.15); and PM10 -0.08 (-0.13; -0.03), -0.04 (-0.09; 0.01), -0.08 (-0.13; -0.04), -0.17 (-0.21; -0.12)], respectively. No associations were found between NO2 and EC and corneal nerve measures. CONCLUSIONS Our population-based study demonstrated that exposure to higher levels of PM2.5 and PM10 are associated with higher levels of corneal neurodegeneration, estimated from lower corneal nerve measures. Our results suggest that air pollution may be a determinant for neurodegeneration assessed in the cornea and may impact the ocular surface health as well.
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Grants
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
- 31O.041 OP-Zuid, the Province of Limburg, the Dutch Ministry of Economic Affairs
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Affiliation(s)
- Sara B A Mokhtar
- Department of Internal Medicine, School for Cardiovascular Diseases, Maastricht University Medical Center, Maastricht, the Netherlands.
- School of Mental Health and Neuroscience, University Eye Clinic Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands.
| | - Jessica Viljoen
- Department of Internal Medicine, School for Cardiovascular Diseases, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Carla J H van der Kallen
- Department of Internal Medicine, School for Cardiovascular Diseases, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Tos T J M Berendschot
- School of Mental Health and Neuroscience, University Eye Clinic Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Pieter C Dagnelie
- Department of Internal Medicine, School for Cardiovascular Diseases, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Jeroen D Albers
- Department of Social Medicine, Maastricht University, Maastricht, The Netherlands
- Care and Public Health Research Institute, Maastricht University, Maastricht, The Netherlands
| | - Jens Soeterboek
- Alzheimer Centrum Limburg, Department of Psychiatry and Neuropsychology, School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - Fabio Scarpa
- Department of Information Engineering, University of Padova, Padua, Italy
| | - Alessia Colonna
- Department of Information Engineering, University of Padova, Padua, Italy
| | - Frank C T van der Heide
- Université de Paris, Inserm U1153, Epidemiology of Ageing and Neurodegenerative Diseases, Paris, France
| | - Marleen M J van Greevenbroek
- Department of Internal Medicine, School for Cardiovascular Diseases, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Hans Bosm
- Department of Social Medicine, Maastricht University, Maastricht, The Netherlands
- Care and Public Health Research Institute, Maastricht University, Maastricht, The Netherlands
| | - Abraham A Kroon
- Department of Internal Medicine, School for Cardiovascular Diseases, Maastricht University Medical Center, Maastricht, the Netherlands
- Heart and Vascular Center, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Rudy M M A Nuijts
- School of Mental Health and Neuroscience, University Eye Clinic Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Marlies Gijs
- School of Mental Health and Neuroscience, University Eye Clinic Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Jeroen Lakerveld
- Global Geo Health Data Center, University Medical Center Utrecht & Utrecht University, Utrecht, the Netherlands
- Department of Epidemiology and Data Science, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Rayaz A Malik
- Department of Medicine, Weill Cornell Medicine-Qatar, Qatar Foundation, Education City, Doha, Qatar
- Institute of Cardiovascular Science, University of Manchester, Manchester, UK
| | - Carroll A B Webers
- School of Mental Health and Neuroscience, University Eye Clinic Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Coen D A Stehouwer
- Department of Chronic Diseases and Metabolism (CHROMETA), KU Louvain, Louvain, Belgium
| | - Annemarie Koster
- Department of Social Medicine, Maastricht University, Maastricht, The Netherlands
- Care and Public Health Research Institute, Maastricht University, Maastricht, The Netherlands
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Zhou HZ, Liu X, Zhou D, Shao F, Li Q, Li D, He T, Ren Y, Lu CW. Effects of Air Pollution and Meteorological Conditions on DED: Associated Manifestations and Underlying Mechanisms. Klin Monbl Augenheilkd 2024; 241:1062-1070. [PMID: 38688324 DOI: 10.1055/a-2316-6808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
This study aims to explore the associations and the underlying mechanism among dry eye disease (DED), air pollution, and meteorological conditions. DED is positively correlated with air pollutants (i.e., PM2.5, PM10, O3, NO2, CO, and SO2) and meteorological conditions (i.e., high altitude and wind speed), while negatively associated with relative humidity. Both low and high air temperatures effect DED. Atmospheric pollutants affect DED mainly through necroptosis or autophagy, inflammatory responses, and oxidative stress. Meteorological factors affect DED not only by their own affects but also by dispersing the concentration of air pollutants, and then reducing the negative exposure. In summary, this review may expand the understanding of the effects of air pollution and meteorological factors on DED and emphasize the importance of air environmental protection.
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Affiliation(s)
- Hui-Zhong Zhou
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
| | - Xiufen Liu
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
| | - Dandan Zhou
- Department of Radiology, The First Hospital of Jilin University, Changchun, China
| | - Fei Shao
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
| | - Qian Li
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
| | - Dan Li
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
| | - Tianlong He
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
| | - Yu Ren
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
| | - Cheng-Wei Lu
- Department of Ophthalmology, The First Hospital of Jilin University, Changchun, China
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Amini P, Okeme JO. Tear Fluid as a Matrix for Biomonitoring Environmental and Chemical Exposures. Curr Environ Health Rep 2024; 11:340-355. [PMID: 38967858 DOI: 10.1007/s40572-024-00454-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2024] [Indexed: 07/06/2024]
Abstract
PURPOSE Exposures to hazardous chemicals have been linked to many detrimental health effects and it is therefore critical to have effective biomonitoring methods to better evaluate key environmental exposures that increase the risk of chronic disease and death. Traditional biomonitoring utilizing blood and urine is limited due to the specialized skills and invasiveness of collecting these fluid samples. This systematic review focuses on tear fluid, which is largely under-researched, as a promising complementary matrix to the traditional fluids used for biomonitoring. The objective is to evaluate the practicability of using human tear fluid for biomonitoring environmental exposures, highlighting potential pitfalls and opportunities. RECENT FINDING Tear fluid biomonitoring represents a promising method for assessing exposures because it can be collected with minimal invasiveness and tears contain exposure markers from both the external and internal environments. Tear fluid uniquely interfaces with the external environment at the air-tear interface, providing a surface for airborne chemicals to diffuse into the ocular environment and interact with biomolecules. Tear fluid also contains molecules from the internal environment that have travelled from the blood to tears by crossing the blood-tear barrier. This review demonstrates that tear fluid can be used to identify hazardous chemicals from the external environment and differentiate exposure groups.
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Affiliation(s)
- Parshawn Amini
- Department of Chemistry & Chemical Biology, McMaster University, Hamilton, ON, Ontario, L8S 4L8, Canada
| | - Joseph O Okeme
- Department of Chemistry & Chemical Biology, McMaster University, Hamilton, ON, Ontario, L8S 4L8, Canada.
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Muñoz-Villegas P, García-Sánchez G, Jauregui-Franco RO, Quirarte-Justo S, Sánchez-Ríos A, Olvera-Montaño O. Influence of Environmental Factors with Clinical Signs and Symptoms in the Management of Dry Eye Disease. Clin Ophthalmol 2024; 18:2439-2451. [PMID: 39233999 PMCID: PMC11372294 DOI: 10.2147/opth.s480223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Accepted: 08/19/2024] [Indexed: 09/06/2024] Open
Abstract
Background This research aims to investigate the influence of environmental factors on the treatment efficacy of ocular lubricants in patients from urban areas with dry eye disease (DED). Methods A phase IV clinical trial, which included 173 patients from major cities in Mexico, was randomly assigned to use ocular lubricants four times a day for 30 days. Ocular Surface Disease Index (OSDI), noninvasive tear film break-up time (NIBUT), ocular staining, and conjunctival hyperemia (CH) among other factors like weather, and air pollution as covariates were analysed. Results After 30 days, OSDI score decreased by 14.8 points (p<0.001), and NIBUT increased by 2.9 seconds (p< 0.001), with longer values observed in patients recruited in autumn and winter (additional 1.8 seconds, p< 0.05) compared to those recruited in spring. Patients living in cities with cooler weather and high humidity, but low air quality had higher OSDI and conjunctival stain scores of up to 4.4 and 0.3 points, respectively, as compared to those living in cities with similar pollution and humidity levels but with higher temperatures (p-values= 0.019 and 0.050). Patients with moderate CH had an increase of up to 0.8 points in their corneal stain score (p< 0.010). We also found that ozone levels were related to the predicted changes in OSDI and NIBUT. Conclusion This study demonstrated the impact of environmental factors on the signs and symptoms of DED and suggests that patients residing in cities with inadequately controlled air pollution can benefit from using ocular lubricants to alleviate their symptoms. Trial Registration Trial is registered at clinicaltrials.gov (NCT04702776).
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Affiliation(s)
- Patricia Muñoz-Villegas
- Regional Medical Affairs Department, Laboratorios Sophia, S.A. de C.V., Zapopan, Jalisco, Mexico
- Centro de Investigación en Matemáticas, A.C., Unidad Aguascalientes (CIMAT), Aguascalientes, Aguascalientes, Mexico
| | - Gisela García-Sánchez
- Regional Medical Affairs Department, Laboratorios Sophia, S.A. de C.V., Zapopan, Jalisco, Mexico
| | | | - Sebastian Quirarte-Justo
- Regional Medical Affairs Department, Laboratorios Sophia, S.A. de C.V., Zapopan, Jalisco, Mexico
| | - Alejandra Sánchez-Ríos
- Regional Medical Affairs Department, Laboratorios Sophia, S.A. de C.V., Zapopan, Jalisco, Mexico
| | - Oscar Olvera-Montaño
- Regional Medical Affairs Department, Laboratorios Sophia, S.A. de C.V., Zapopan, Jalisco, Mexico
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Choi YH, Song MS, Lee Y, Paik HJ, Song JS, Choi YH, Kim DH. Adverse effects of meteorological factors and air pollutants on dry eye disease: a hospital-based retrospective cohort study. Sci Rep 2024; 14:17776. [PMID: 39090167 PMCID: PMC11294595 DOI: 10.1038/s41598-024-68070-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Accepted: 07/19/2024] [Indexed: 08/04/2024] Open
Abstract
Although previous studies have suggested that meteorological factors and air pollutants can cause dry eye disease (DED), few clinical cohort studies have determined the individual and combined effects of these factors on DED. We investigated the effects of meteorological factors (humidity and temperature) and air pollutants [particles with a diameter ≤ 2.5 μ m (PM2.5), ozone (O3), nitrogen dioxide (NO2), and carbon monoxide (CO)] on DED. A retrospective cohort study was conducted on 53 DED patients. DED was evaluated by Symptom Assessment in Dry Eye (SANDE), tear secretion, tear film break-up time (TBUT), ocular staining score (OSS), and tear osmolarity. To explore the individual, non-linear, and joint associations between meteorological factors, air pollutants, and DED parameters, we used generalized linear mixed model (GLMM) and Bayesian kernel machine regression (BKMR). After adjusting for all covariates, lower relative humidity or temperature was associated with a higher SANDE (p < 0.05). Higher PM2.5, O3, and NO2 levels were associated with higher SANDE and tear osmolarity (p < 0.05). Higher O3 levels were associated with lower tear secretion and TBUT, whereas higher NO2 levels were associated with higher OSS (p < 0.05). BKMR analyses indicated that a mixture of meteorological factors and air pollutants was significantly associated with increased SANDE, OSS, tear osmolarity, and decreased tear secretion.
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Affiliation(s)
- Yun-Hee Choi
- Department of Ophthalmology, Korea University College of Medicine, 73, Goryeodae-ro, Seongbuk-gu, Seoul, 02841, South Korea
- School of Health and Environmental Science, Korea University, Seoul, South Korea
| | - Myung-Sun Song
- Department of Ophthalmology, Korea University College of Medicine, 73, Goryeodae-ro, Seongbuk-gu, Seoul, 02841, South Korea
| | - Yunjin Lee
- Department of Ophthalmology, Gachon University College of Medicine, Gil Medical Center, Incheon, South Korea
| | - Hae Jung Paik
- Department of Ophthalmology, Gachon University College of Medicine, Gil Medical Center, Incheon, South Korea
| | - Jong Suk Song
- Department of Ophthalmology, Korea University College of Medicine, 73, Goryeodae-ro, Seongbuk-gu, Seoul, 02841, South Korea
| | - Yoon-Hyeong Choi
- School of Health and Environmental Science, Korea University, Seoul, South Korea.
- Institute of Health Science, Korea University, Seoul, South Korea.
| | - Dong Hyun Kim
- Department of Ophthalmology, Korea University College of Medicine, 73, Goryeodae-ro, Seongbuk-gu, Seoul, 02841, South Korea.
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6
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Yarahmadi A, Heidari S, Sepahvand P, Afkhami H, Kheradjoo H. Microplastics and environmental effects: investigating the effects of microplastics on aquatic habitats and their impact on human health. Front Public Health 2024; 12:1411389. [PMID: 38912266 PMCID: PMC11191580 DOI: 10.3389/fpubh.2024.1411389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 05/13/2024] [Indexed: 06/25/2024] Open
Abstract
Microplastics (MPs) are particles with a diameter of <5 mm. The disposal of plastic waste into the environment poses a significant and pressing issue concern globally. Growing worry has been expressed in recent years over the impact of MPs on both human health and the entire natural ecosystem. MPs impact the feeding and digestive capabilities of marine organisms, as well as hinder the development of plant roots and leaves. Numerous studies have shown that the majority of individuals consume substantial quantities of MPs either through their dietary intake or by inhaling them. MPs have been identified in various human biological samples, such as lungs, stool, placenta, sputum, breast milk, liver, and blood. MPs can cause various illnesses in humans, depending on how they enter the body. Healthy and sustainable ecosystems depend on the proper functioning of microbiota, however, MPs disrupt the balance of microbiota. Also, due to their high surface area compared to their volume and chemical characteristics, MPs act as pollutant absorbers in different environments. Multiple policies and initiatives exist at both the domestic and global levels to mitigate pollution caused by MPs. Various techniques are currently employed to remove MPs, such as biodegradation, filtration systems, incineration, landfill disposal, and recycling, among others. In this review, we will discuss the sources and types of MPs, the presence of MPs in different environments and food, the impact of MPs on human health and microbiota, mechanisms of pollutant adsorption on MPs, and the methods of removing MPs with algae and microbes.
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Affiliation(s)
- Aref Yarahmadi
- Department of Biology, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
| | | | - Parisa Sepahvand
- Department of Biology, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
| | - Hamed Afkhami
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran
- Cellular and Molecular Research Center, Qom University of Medical Sciences, Qom, Iran
- Department of Medical Microbiology, Faculty of Medicine, Shahed University, Tehran, Iran
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Upaphong P, Thonusin C, Wanichthanaolan O, Chattipakorn N, Chattipakorn SC. Consequences of exposure to particulate matter on the ocular surface: Mechanistic insights from cellular mechanisms to epidemiological findings. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 345:123488. [PMID: 38311159 DOI: 10.1016/j.envpol.2024.123488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/28/2024] [Accepted: 01/31/2024] [Indexed: 02/10/2024]
Abstract
Exposure to air pollutants, especially in the case of particulate matter (PM), poses significant health risks throughout the body. The ocular surface is directly exposed to atmospheric PM making it challenging to avoid. This constant exposure makes the ocular surface a valuable model for investigating the impact of air pollutants on the eyes. This comprehensive review assembles evidence from across the spectrum, from in vitro and in vivo investigations to clinical studies and epidemiological studies, offering a thorough understanding of how PM10 and PM2.5 affect the health of the ocular surface. PM has been primarily found to induce inflammatory responses, allergic reactions, oxidative stress, DNA damage, mitochondrial impairment, and inhibit the proliferation and migration of ocular surface cells. In toto these effects ultimately lead to impaired wound healing and ocular surface damage. In addition, PM can alter tear composition. These events contribute to ocular diseases such as dry eye disease, blepharitis, conjunctivitis, keratitis, limbal stem cell deficiency and pterygium. Importantly, preexisting ocular conditions such as dry eye, allergic conjunctivitis, and infectious keratitis can be worsened by PM exposure. Adaptive responses may partially alleviate the mentioned insults, resulting in morphological and physiological changes that could be different between periods of short-term and long-term exposure. Particle size is not the only determinant of the ocular effect of PM, the composition and solubility of PM also play critical roles. Increasing awareness of how PM affects the ocular surface is crucial in the field of public health, and mechanistic insights of these adverse effects may provide guidelines for preventive and therapeutic strategies in dealing with a polluted environment.
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Affiliation(s)
- Phit Upaphong
- Department of Ophthalmology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Chanisa Thonusin
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | | | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand; Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
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8
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Jiao J, Liu L, Xiao K, Liu Q, Long Q. Atmospheric pollutant black carbon induces ocular surface damage in mice. Exp Eye Res 2024; 239:109755. [PMID: 38128749 DOI: 10.1016/j.exer.2023.109755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 11/06/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
The threats of air pollution to human health have been gradually discovered, including its effects on eyes. The purpose of the study is to investigate the potential correlation between ocular surface exposure to black carbon and ocular surface structural damage as well as tear film dysfunction. To achieve this goal, 60 6-8-week-aged male BALB/C mice were randomly divided into 4 groups (n = 15). 0.5 mg/ml (group A), 1 mg/ml (group B), 5 mg/ml (group C) black carbon suspension droplets and PBS solution (group D) were used in the right eyes, 4 μl per time of three times per day. Tear break-up time, corneal fluorescein staining scores, and tear volume were assessed before treatment (day 0) and on days 4, 7, 10, and 14 after treatment. On day 14, the mice were sacrificed, and corneal and conjunctival tissues were collected for histological analysis. As the exposure time increased, there were no significant changes in the measured parameters from PBS-treated group of mice (P > 0.05). However, in the black carbon-treated group, there were significant decreases in tear film break-up time, significant increases in corneal fluorescein staining scores, and significant reductions in tear secretion (all P < 0.05). After 14 days, H&E staining of the corneal epithelium showed that in the PBS-treated group of mice, the corneal epithelial cells were neatly arranged, with no inflammatory cell infiltration, while in the black carbon-treated group, the corneal epithelium was significantly thickened, the basal cell arrangement was disrupted, the number of cell layers increased, and there was evidence of inflammatory cell infiltration. In the ultrastructure of the corneal epithelium, it could be observed that the black carbon-treated group had an increased amount of corneal epithelial cell detachment compared to the PBS-treated group, at the same time, the intercellular connections were looser, and there was a decrease in the number of microvilli and desmosomes in the black carbon-treated group. The results indicate that the ocular surface exposure to black carbon can result in a decrease in tear film stability and tear secretion in mice. Moreover, it can induce alterations in the corneal structure.
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Affiliation(s)
- Jingyi Jiao
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Shuaifuyuan, Dongcheng District, Beijing 100730, China
| | - Lin Liu
- State Key Laboratory of Environmental Chemistry & Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, Beijing 100085, China
| | - Kang Xiao
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Shuaifuyuan, Dongcheng District, Beijing 100730, China
| | - Qian Liu
- State Key Laboratory of Environmental Chemistry & Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, Beijing 100085, China.
| | - Qin Long
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, No.1 Shuaifuyuan, Dongcheng District, Beijing 100730, China.
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9
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Tu M, Liu R, Xue J, Xiao B, Li J, Liang L. Urban Particulate Matter Triggers Meibomian Gland Dysfunction. Invest Ophthalmol Vis Sci 2024; 65:8. [PMID: 38315493 PMCID: PMC10851789 DOI: 10.1167/iovs.65.2.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 01/04/2024] [Indexed: 02/07/2024] Open
Abstract
Purpose The meibomian gland (MG), as the largest modified sebaceous gland, is potentially damaged by urban particulate matter (UPM) based on epidemiological evidence, but the specific experimental mechanisms remain unknown. This study investigated the effects of UPM on MG dysfunction (MGD) in rodent models. Methods Female C57BL/6J mice received eye drops containing UPM suspension or PBS for 14 days. The proliferative capacity and progenitor of MG were evaluated by immunofluorescence. Cell apoptosis was confirmed by TUNEL assay, along with the analysis of caspase family expression. Lipid accumulation was visualized by Oil Red O staining and LipidTox staining. Ductal hyperkeratinization, neutrophil infiltration, and pyroptosis activation were detected through immunostaining. The relative gene expression and signaling pathway activation were determined by Western blot analysis. Results Administration of UPM caused MGD-like clinical signs, manifested as distinct corneal epithelial erosion, increased MG orifice occlusion, and glandular dropout. UPM exposure significantly induced progenitor loss, cellular apoptosis, and lipogenic disorder in MG, by reducing P63/Lrig1 expression and increasing cleaved caspase-8, -9, and -3 and meibum lipogenic protein (HMGCR/SREBP-1) expression. UPM-treated mice exhibited ductal hyperkeratinization and neutrophil recruitment. Simultaneously, pyroptosis was motivated, as indicated by the heightened expression of NLRP3 and the cleavage of caspase-1 and -4 and gasdermin D, as well as the increase in IL-1β and IL-18 downstream. The underlying pathological mechanisms of UPM involve the phosphorylation of mitogen-activated protein kinase and nuclear factor-κB. Conclusions These results provided direct evidence for the toxicity of UPM in MG. UPM-induced activation of pyroptosis and mitogen-activated protein kinase/nuclear factor-κB signaling pathway might account for the inflammatory MGD.
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Affiliation(s)
- Mengqian Tu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
| | - Ren Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
| | - Jianwen Xue
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
| | - Bing Xiao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
| | - Jing Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
| | - Lingyi Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, China
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10
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Somayajulu M, McClellan SA, Muhammed F, Wright R, Hazlett LD. PM 10 and Pseudomonas aeruginosa: effects on corneal epithelium. Front Cell Infect Microbiol 2023; 13:1240903. [PMID: 37868351 PMCID: PMC10585254 DOI: 10.3389/fcimb.2023.1240903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/20/2023] [Indexed: 10/24/2023] Open
Abstract
Purpose In vivo data indicate that mouse corneas exposed to PM10 showed early perforation and thinning after infection with Pseudomonas aeruginosa. To understand the mechanisms underlying this finding, we tested the effects of PM10 and the mitochondria targeted anti-oxidant SKQ1 in immortalized human corneal epithelial cells (HCET) that were challenged with Pseudomonas aeruginosa strain 19660. Methods Mouse corneas were infected with strain 19660 after a 2 week whole-body exposure to PM10 or control air and assessed by clinical scores, slit lamp photography and western blot. HCET were exposed to 100μg/ml PM10 for 24h before challenge with strain 19660 (MOI 20). A subset of cells were pre-treated with 50nM SKQ1 for 1h before PM10 exposure. Phase contrast microscopy was used to study cell morphology, cell viability was measured by an MTT assay, and ROS by DCFH-DA. Levels of pro-inflammatory markers and anti-oxidant enzymes were evaluated by RT-PCR, western blot and ELISA. Reduced glutathione (GSH) and malondialdehyde (MDA) levels were evaluated by assay kits. Results In vivo, whole body exposure to PM10 vs. control air exposed mouse corneas showed early perforation and/or corneal thinning at 3 days post infection, accompanied by increased TNF-α and decreased SOD2 protein levels. In vitro, PM10 induced a dose dependent reduction in cell viability of HCET and significantly increased mRNA levels of pro-inflammatory molecules compared to control. Exposure to PM10 before bacterial challenge further amplified the reduction in cell viability and GSH levels. Furthermore, PM10 exposure also exacerbated the increase in MDA and ROS levels and phase contrast microscopy revealed more rounded cells after strain 19660 challenge. PM10 exposure also further increased the mRNA and protein levels of pro-inflammatory molecules, while anti-inflammatory IL-10 was decreased. SKQ1 reversed the rounded cell morphology observed by phase contrast microscopy, increased levels of MDA, ROS and pro-inflammatory molecules, and restored IL-10. Conclusions PM10 induces decreased cell viability, oxidative stress and inflammation in HCET and has an additive effect upon bacterial challenge. SKQ1 protects against oxidative stress and inflammation induced by PM10 after bacterial challenge by reversing these effects. The findings provide insight into mechanisms underlying early perforation and thinning observed in infected corneas of PM10 exposed mice.
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Affiliation(s)
| | | | | | | | - Linda D. Hazlett
- Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University, School of Medicine, Detroit, MI, United States
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11
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Yan K, Wang M, Cheng Y, Zou J, Zhang Y, Hu S, Chen Y, Lv Q, Ying S. An update on the association between ambient short-term air pollution exposure and daily outpatient visits for conjunctivitis: a time-series study in Hangzhou, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:102790-102802. [PMID: 37672159 DOI: 10.1007/s11356-023-29647-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 08/29/2023] [Indexed: 09/07/2023]
Abstract
Air pollution is a major public health problem that can lead to conjunctivitis. This study aimed to explore the associations between air pollutants and outpatient visits for conjunctivitis in Hangzhou, China. This study collected data on 50,772 patients with conjunctivitis and the concentrations of six air pollutants from February 1, 2014, to August 31, 2018. A time series analysis using a generalized additive model (GAM) was conducted. We found that the risk of conjunctivitis was related to the air pollutants PM2.5, PM10, SO2, NO2, and O3, which had concentration hysteresis effects. The risk of conjunctivitis increased by 1.009 (95% confidence interval (CI): 1.003, 1.014), 1.011 (95% CI: 1.008, 1.015), 1.238 (95% CI: 1.186, 1.292), 1.028 (95% CI: 1.019, 1.038), and 1.013 (95% CI: 1.008, 1.017) for every 10 µg/m3 increase in PM2.5, PM10, SO2, NO2, and O3 concentrations, respectively. The lag effects of SO2 and NO2 were stronger than those of particulate matter. Females exposed to PM10, PM2.5, SO2, and O3 had a higher risk of conjunctivitis than males, while males exposed to NO2 had a nearly identical risk of conjunctivitis as females. People aged 19-59 were more likely to suffer from conjunctivitis. The risk of conjunctivitis caused by PM10, SO2, and O3 was highest in the transitional season, while the risk caused by NO2 was highest in the winter season. In conclusion, females and middle-aged adults were at higher risk of conjunctivitis. People were more susceptible to conjunctivitis during the transitional season. These findings highlight the importance of atmospheric pollution governance and reference for public health measures.
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Affiliation(s)
- Kaili Yan
- School of Public Health, Zhejiang Academy of Medical Sciences, Hangzhou Medical College, No.182, Tianmushan Road Zhejiang Province, Hangzhou, 310013, China
| | - Mingwei Wang
- Affiliated Hospital of Hangzhou Normal University, Zhejiang Province, Hangzhou, China
| | - Yongran Cheng
- School of Public Health, Zhejiang Academy of Medical Sciences, Hangzhou Medical College, No.182, Tianmushan Road Zhejiang Province, Hangzhou, 310013, China
| | - Jin Zou
- School of Public Health, Zhejiang Academy of Medical Sciences, Hangzhou Medical College, No.182, Tianmushan Road Zhejiang Province, Hangzhou, 310013, China
| | - Yu Zhang
- School of Public Health, Zhejiang Academy of Medical Sciences, Hangzhou Medical College, No.182, Tianmushan Road Zhejiang Province, Hangzhou, 310013, China
| | - Shuaiyue Hu
- School of Public Health, Zhejiang Academy of Medical Sciences, Hangzhou Medical College, No.182, Tianmushan Road Zhejiang Province, Hangzhou, 310013, China
| | - Yitong Chen
- Savaid Stomatology School, Hangzhou Medical College, Zhejiang Province, Hangzhou, China
| | - Qingqing Lv
- School of Public Health, Zhejiang Academy of Medical Sciences, Hangzhou Medical College, No.182, Tianmushan Road Zhejiang Province, Hangzhou, 310013, China
| | - Shibo Ying
- School of Public Health, Zhejiang Academy of Medical Sciences, Hangzhou Medical College, No.182, Tianmushan Road Zhejiang Province, Hangzhou, 310013, China.
- Institute of Occupational Diseases, Zhejiang Academy of Medical Sciences, Zhejiang Province, Hangzhou, China.
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12
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Lu CW, Fu J, Liu XF, Cui ZH, Chen WW, Guo L, Li XL, Ren Y, Shao F, Chen LN, Hao JL. Impacts of air pollution and meteorological conditions on dry eye disease among residents in a northeastern Chinese metropolis: a six-year crossover study in a cold region. LIGHT, SCIENCE & APPLICATIONS 2023; 12:186. [PMID: 37495595 PMCID: PMC10372063 DOI: 10.1038/s41377-023-01207-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 06/07/2023] [Accepted: 06/10/2023] [Indexed: 07/28/2023]
Abstract
The purpose of this study is to explore the associations among dry eye disease (DED), air pollution, and meteorological conditions in the cold region of a northeastern Chinese metropolis (i.e., Changchun). Data on ambient air pollutants and meteorological parameters as well as diagnosed DED outpatients during 2015-2021 were collected. The associations between DED and environmental factors were analysed at multiple time scales using various statistical methods (i.e., correlation, regression and machine learning). Among the 10,809 DED patients (21,617 eyes) studied, 64.60% were female and 35.40% were male. A higher frequency of DED was observed in March and April, followed by January, August and October. Individual and multiple factor models showed the positive importance of particles with aerodynamic diameters <10 μm (PM10), carbon monoxide (CO), and ozone (O3) among normal air pollutants and air pressure (AP), air temperature (AT) and wind speed (WS) among normal meteorological parameters. Air pollutants (PM10, nitrogen dioxide: NO2) and meteorological parameters (AT, AP) have combined impacts on DED occurrence. For the first time, we further explored the associations of detailed components of atmospheric particles and DED, suggesting potential emission sources, including spring dust from bare soil and roads and precursor pollutants of summer O3 formation from vehicles and industry in Northeast China. Our results revealed the quantitative associations among air pollutants, meteorological conditions and DED outpatients in cold regions, highlighting the importance of coordinated policies in air pollution control and climate change mitigation.
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Affiliation(s)
- Cheng-Wei Lu
- Opthalmology Department, The First Hospital of Jilin University, Changchun, 130021, China.
| | - Jing Fu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Xiu-Fen Liu
- Opthalmology Department, The First Hospital of Jilin University, Changchun, 130021, China
| | - Zhi-Hua Cui
- Opthalmology Department, The First Hospital of Jilin University, Changchun, 130021, China
| | - Wei-Wei Chen
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China.
- College of New Energy and Environment, Jilin University, Changchun, 130021, China.
| | - Li Guo
- China College of Biological and Agricultural Engineering, Jilin University, Changchun, 130022, China
| | - Xiao-Lan Li
- Shenyang Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, 110166, China
| | - Yu Ren
- Opthalmology Department, The First Hospital of Jilin University, Changchun, 130021, China
| | - Fei Shao
- Opthalmology Department, The First Hospital of Jilin University, Changchun, 130021, China
| | - Li-Na Chen
- Opthalmology Department, The First Hospital of Jilin University, Changchun, 130021, China
| | - Ji-Long Hao
- Opthalmology Department, The First Hospital of Jilin University, Changchun, 130021, China
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13
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Hicks PM, Armstrong ML, Woodward MA. Current social determinants of health and social risk factors in conditions of the cornea: a scoping review. Curr Opin Ophthalmol 2023; 34:324-333. [PMID: 37097186 PMCID: PMC10247394 DOI: 10.1097/icu.0000000000000960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
PURPOSE OF REVIEW To achieve health equity in eye health and vision care, social determinants of health (SDoH) and the associated social risk factors must be addressed. To address SDoH and social risk factors in ophthalmology, they must first be identified. The purpose of this review was to determine the SDoH and social risk factors in conditions of the cornea that have most recently been explored. RECENT FINDINGS This review identified social risk factors associated with all five domains of SDoH, as outlined by Healthy People 2030. The neighborhood and built environment was the domain identified the most for both exploration and observation. The social and community context domain was the least explored, and healthcare access and quality and social and community context domains were the least observed. The cornea condition explored the most in relation to SDoH was dry eye syndrome. SUMMARY The findings from this review can inform clinicians on the social risk factors that could be screened for in eye care facilities, so patients can be connected with services to minimize the impact of social risk factors on cornea conditions. Furthermore, the findings have identified cornea conditions and domains of SDoH that are understudied which can be an area for future studies by vision researchers.
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Affiliation(s)
- Patrice M. Hicks
- Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Maria A. Woodward
- Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, USA
- Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, Michigan, USA
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14
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Wu D, Lim BXH, Seah I, Xie S, Jaeger JE, Symons RK, Heffernan AL, Curren EEM, Leong SCY, Riau AK, Lim DKA, Stapleton F, Ali MJ, Singh S, Tong L, Mehta JS, Su X, Lim CHL. Impact of Microplastics on the Ocular Surface. Int J Mol Sci 2023; 24:3928. [PMID: 36835339 PMCID: PMC9962686 DOI: 10.3390/ijms24043928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/14/2023] [Accepted: 02/14/2023] [Indexed: 02/17/2023] Open
Abstract
Plastics are synthetic materials made from organic polymers that are ubiquitous in daily living and are especially important in the healthcare setting. However, recent advances have revealed the pervasive nature of microplastics, which are formed by degradation of existing plastic products. Although the impact on human health has yet to be fully characterised, there is increasing evidence that microplastics can trigger inflammatory damage, microbial dysbiosis, and oxidative stress in humans. Although there are limited studies investigating their effect on the ocular surface, studies of microplastics on other organs provide some insights. The prevalence of plastic waste has also triggered public outcry, culminating in the development of legislation aimed at reducing microplastics in commercial products. We present a review outlining the possible sources of microplastics leading to ocular exposure, and analyse the possible mechanisms of ocular surface damage. Finally, we examine the utility and consequences of current legislation surrounding microplastic regulation.
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Affiliation(s)
- Duoduo Wu
- Department of Ophthalmology, National University Health System, Singapore 119228, Singapore
| | - Blanche X. H. Lim
- Department of Ophthalmology, National University Health System, Singapore 119228, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore
| | - Ivan Seah
- Department of Ophthalmology, National University Health System, Singapore 119228, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore
| | - Shay Xie
- Eurofins Environment Testing Australia & New Zealand, Dandenong, VIC 3175, Australia
- Australian Water Association, St Leonards, NSW 2065, Australia
| | - Julia E. Jaeger
- Eurofins Environment Testing Australia & New Zealand, Dandenong, VIC 3175, Australia
| | - Robert K. Symons
- Eurofins Environment Testing Australia & New Zealand, Dandenong, VIC 3175, Australia
| | - Amy L. Heffernan
- Eurofins Environment Testing Australia & New Zealand, Dandenong, VIC 3175, Australia
| | - Emily E. M. Curren
- St. John’s Island National Marine Laboratory, Tropical Marine Science Institute, National University of Singapore, Singapore 119077, Singapore
| | - Sandric C. Y. Leong
- St. John’s Island National Marine Laboratory, Tropical Marine Science Institute, National University of Singapore, Singapore 119077, Singapore
| | - Andri K. Riau
- Singapore Eye Research Institute, Singapore 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Programme, Duke-NUS Medical School, Singapore 169857, Singapore
| | - Dawn K. A. Lim
- Department of Ophthalmology, National University Health System, Singapore 119228, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore
| | - Fiona Stapleton
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia
| | | | - Swati Singh
- LV Prasad Eye Institute, Hyderabad 500034, India
| | - Louis Tong
- Singapore Eye Research Institute, Singapore 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Programme, Duke-NUS Medical School, Singapore 169857, Singapore
- Singapore National Eye Centre, Singapore 168751, Singapore
| | - Jodhbir S. Mehta
- Singapore Eye Research Institute, Singapore 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Programme, Duke-NUS Medical School, Singapore 169857, Singapore
- Singapore National Eye Centre, Singapore 168751, Singapore
| | - Xinyi Su
- Department of Ophthalmology, National University Health System, Singapore 119228, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore
| | - Chris H. L. Lim
- Department of Ophthalmology, National University Health System, Singapore 119228, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119077, Singapore
- Singapore Eye Research Institute, Singapore 169856, Singapore
- School of Optometry and Vision Science, University of New South Wales, Sydney, NSW 2052, Australia
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15
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Recchioni A, Makanvand M, Poonit N, Wallace GR, Bartington S, Bloss W, Rauz S. The impact of the first United Kingdom COVID-19 lockdown on environmental air pollution, digital display device use and ocular surface disease symptomatology amongst shielding patients. Sci Rep 2022; 12:20820. [PMID: 36460705 PMCID: PMC9716517 DOI: 10.1038/s41598-022-24650-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 11/18/2022] [Indexed: 12/04/2022] Open
Abstract
Worldwide lockdown reduced air pollution during the first phase of the COVID-19 pandemic. The relationship between exposure to ambient air pollution, digital display device use and dry eye symptoms amongst patients with severe ocular surface disease (OSD) were considered. Symptoms and air pollutant concentrations for three different time periods (pre, during and post COVID-19 lockdown) were analysed in 35 OSD patients who achieved an immunosuppression risk-stratification score > 3 fulfilling the UK Government criteria for 12-week shielding. OSDI symptoms questionnaire, residential postcode air pollution data obtained from the Defra Automated Urban and Rural monitoring network for concentrations of nitrogen dioxide (NO2), nitrogen oxides (NOx), particulate matter (PM) with diameters below 10 µm and 2.5 µm, and English Indices of Deprivation were analysed. Significant reductions in NO2 and NOx concentrations were observed between pre- and during-lockdown periods, followed by a reversal in the post-lockdown period. Changes were linked to the Living Environment outdoor decile. A 12% increase (p = 0.381) in symptomatology during-lockdown was observed that reversed post-lockdown by 19% (p = 0.144). OSDI scores were significantly correlated with hours spent on digital devices (r2 = 0.243) but not with air pollutant concentrations. Lockdown measures reduced ambient air pollutants whilst OSD symptomatology persisted. Environmental factors such as increased time indoors and use of bluescreen digital devices may have partly played a role.
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Affiliation(s)
- Alberto Recchioni
- grid.6572.60000 0004 1936 7486Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK ,grid.6572.60000 0004 1936 7486Academic Unit of Ophthalmology, Birmingham and Midland Eye Centre, Birmingham, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Dudley Road, Birmingham, UK ,grid.7273.10000 0004 0376 4727Optometry and Vision Sciences Group, School of Life and Health Sciences, Aston University, Birmingham, UK
| | - Maryam Makanvand
- grid.6572.60000 0004 1936 7486School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, UK
| | - Natraj Poonit
- grid.6572.60000 0004 1936 7486Academic Unit of Ophthalmology, Birmingham and Midland Eye Centre, Birmingham, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Dudley Road, Birmingham, UK
| | - Graham R. Wallace
- grid.6572.60000 0004 1936 7486Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - Suzanne Bartington
- grid.6572.60000 0004 1936 7486Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - William Bloss
- grid.6572.60000 0004 1936 7486School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, UK
| | - Saaeha Rauz
- grid.6572.60000 0004 1936 7486Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK ,grid.6572.60000 0004 1936 7486Academic Unit of Ophthalmology, Birmingham and Midland Eye Centre, Birmingham, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Dudley Road, Birmingham, UK
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