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Nanomaterials
Special Issues
Environmental Risk Assessment and Genotoxicity of Nanomaterials and Microparticles
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Environmental Risk Assessment and Genotoxicity of Nanomaterials and Microparticles

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Environmental Nanoscience and Nanotechnology".

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 8135

Special Issue Editor

Prof. Dr. Min-Kyeong Yeo

E-Mail Website
Guest Editor
Department of Environmental Science and Environmental Research Center, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Korea
Interests: nanotoxicity; environmental risk assessment of nanomaterials; genotoxicity of nanomaterials; metal doped nanomaterials; microplastics; nanoplastics; microbiome of indoor air; the health effects of nanoparticles; degradation of nanotoxiciy with biomaterials

Special Issue Information

Dear Colleagues,

Manufactured nanomaterials and microplastics or nanoplastics existing in the environment with a fine particle size, although not manufactured, are major environmental risk assessment target materials. These nano or micro substances can threaten human health, exist in environmental medium, and accumulate by ecosystem food webs. As nano or micro particles are known to exist in household goods, industrial products, water and air, there is a need to understand the status and figure out solutions.

This Special Issue will address the following topics:

  1. environmental risk assessment of manufactured nanomaterials;
  2. the genotoxicity of manufactured nanomaterials;
  3. the toxicity of nanoplastics or microplastics;
  4. the nanoparticles of indoor air;
  5. micro-size microorganisms or microbiome of indoor air;
  6. the degradation technology of nanomaterial toxicity.

Prof. Dr. Min-Kyeong Yeo
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Environmental risk assessment of manufactured nanomaterials
  • Genotoxicity of manufactured nanomaterials
  • Nanoplastics
  • Microplastics
  • Micro-sized microbiomes
  • Micro-sized microorganisms
  • Nanoparticles of indoor air
  • Degradation of nanotoxicity
  • Microbiome of indoor air
  • Toxicity effects of bioaerosol of indoor air

Published Papers (4 papers)

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Research

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19 pages, 3648 KiB  
Article
Reduction in Toxicity of Polystyrene Nanoplastics Combined with Phenanthrene through Binding of Jellyfish Mucin with Nanoplastics
by Sun Woo Geum and Min-Kyeong Yeo
Nanomaterials 2022, 12(9), 1427; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12091427 - 22 Apr 2022
Cited by 5 | Viewed by 2366
Abstract
Mucin (Mu), a biological substance extracted from jellyfish (Aurelia aurita), was used to reduce the toxic effect of polystyrene nanoplastics (PS-NP) combined with phenanthrene (Phe) in the aquatic environment of zebrafish (Danio rerio), among other aquatic organisms. Mu showed [...] Read more.
Mucin (Mu), a biological substance extracted from jellyfish (Aurelia aurita), was used to reduce the toxic effect of polystyrene nanoplastics (PS-NP) combined with phenanthrene (Phe) in the aquatic environment of zebrafish (Danio rerio), among other aquatic organisms. Mu showed a high binding capacity, as it bound to 92.84% and 92.87% of the PS-NPs (concentration of 2.0 mg/L) after 0.5 h and 8 h, respectively. A zebrafish embryo development test was conducted to check for any reduction in toxicity by Mu. When exposed to PS-NP + Mu and PS-NP + Phe + Mu, respectively, the hatching rates were 88.33 ± 20.21% and 93.33 ± 2.89%, respectively; these results were not significantly different from those of the control group. However, the hatching rate with the addition of Mu increased, compared to that of the PS-NP (71.83 ± 13.36%) and Phe (37.50 ± 19.83%) treatments, and the morphological abnormality rate decreased. The presence of Mu was also found to obstruct the absorption of PS-NP and PS-NP + Phe by the zebrafish. When zebrafish embryos were exposed to PS-NP at a concentration of 5.0 mg/L, the hatching rate differed significantly from that of the control group, and the expression of CAT and p53 genes increased significantly, but the expression of Bcl-2 decreased significantly. An mRNA sequence analysis revealed that the gene expression levels of the test group containing Mu were similar to those of the control group. These results infer that Mu can be used as a biological material to collect and remove PS-NPs from aquatic environments and reduce toxicity. Full article
(This article belongs to the Special Issue Environmental Risk Assessment and Genotoxicity of Nanomaterials and Microparticles)
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9 pages, 1389 KiB  
Article
Prenatal Exposure to Heavy Metals Affects Gestational Age by Altering DNA Methylation Patterns
by Eun Jung Koh, So Yeon Yu, Seung Hwan Kim, Ji Su Lee and Seung Yong Hwang
Nanomaterials 2021, 11(11), 2871; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11112871 - 28 Oct 2021
Cited by 5 | Viewed by 2381
Abstract
Environmental exposure is known to have toxic effects. Maternal environmental exposure not only affects mothers but also their fetuses in utero, which may interrupt their early development. Preterm birth, one of the outcomes of prenatal exposure, is a significant factor in lifelong health [...] Read more.
Environmental exposure is known to have toxic effects. Maternal environmental exposure not only affects mothers but also their fetuses in utero, which may interrupt their early development. Preterm birth, one of the outcomes of prenatal exposure, is a significant factor in lifelong health risks. To understand the effects of prenatal exposome on preterm birth, we studied the association between maternal and prenatal heavy metal exposure and gestational age, using resources from the MOthers’ and Children’s Environmental Health (MOCEH) study in South Korea. Additionally, a methylation assay was performed to analyze epigenetic mediation using genomic DNA derived from the cord blood of 384 participants in the MOCEH study. The results suggest that maternal cadmium exposure is associated with a decrease in gestational age through an alteration in DNA methylation at a specific CpG site, cg21010642. The CpG site was annotated to a gene involved in early embryonic development. Therefore, irregular methylation patterns at this site may contribute to premature birth by mediating irregular biological mechanisms. Full article
(This article belongs to the Special Issue Environmental Risk Assessment and Genotoxicity of Nanomaterials and Microparticles)
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16 pages, 39092 KiB  
Article
ZnO-Impregnated Polyacrylonitrile Nanofiber Filters against Various Phases of Air Pollutants
by Hanaa Aamer, Sang-Bum Kim, Jong-Min Oh, Hyeokjin Park and Young-Min Jo
Nanomaterials 2021, 11(9), 2313; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11092313 - 06 Sep 2021
Cited by 6 | Viewed by 1825
Abstract
The incorporation of metal oxide nanoparticles (NPs) in fiber filters is an effective approach to enhance the specific surface area and surface roughness of the fiber, hence improving their efficiency for fine dust capture and other gas treatment or biological applications. Nevertheless, uneven [...] Read more.
The incorporation of metal oxide nanoparticles (NPs) in fiber filters is an effective approach to enhance the specific surface area and surface roughness of the fiber, hence improving their efficiency for fine dust capture and other gas treatment or biological applications. Nevertheless, uneven distribution of NPs limits their practical applications. In this study, a commercial silane coupling agent (3-methacryloxypropyltrimethoxysilane) was used to improve the dispersion of zinc oxide (ZnO) NPs in thin polyacrylonitrile fibers. Scanning electron microscopy (SEM) revealed that the fibers incorporating the silane-modified NPs exhibited better distribution of NPs than those prepared with pristine ZnO NPs. The silane modification enhanced the specific surface area, surface roughness, and fiber porosity. In particular, the nanofiber filter incorporating 12 wt% ZnO NPs modified with 0.5 g silane per g of ZnO NPs maintained a filtration efficiency of 99.76% with a low pressure drop of 44 Pa, excellent antibacterial activity, and could decompose organic methylene blue dye with an efficiency of 85.11% under visible light. Full article
(This article belongs to the Special Issue Environmental Risk Assessment and Genotoxicity of Nanomaterials and Microparticles)
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8 pages, 862 KiB  
Perspective
COVID-19 Pandemic and Microplastic Pollution
by Minha Lee and Heejung Kim
Nanomaterials 2022, 12(5), 851; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12050851 - 03 Mar 2022
Cited by 24 | Viewed by 3779
Abstract
The world is suffering from aggravating, waste-generated consequences, and the contribution of microplastics to this problem is only increasing. A contributing factor to increased microplastic usage is the change in the use of personal protective equipment (PPE) from specific use in limited locations [...] Read more.
The world is suffering from aggravating, waste-generated consequences, and the contribution of microplastics to this problem is only increasing. A contributing factor to increased microplastic usage is the change in the use of personal protective equipment (PPE) from specific use in limited locations (e.g., hospitals) to general use in widespread locations to protect against the current COVID-19 pandemic. This has resulted in an overflow of microfiber waste from homes, schools, streets, and elsewhere, in every country. While various institutes have issued warnings regarding increasing PPE waste, there is no positive indication of an end to the pandemic in the near future. In this review, we examine the impact of the pandemic on microplastic production, consumption, and disposal, and suggest strategies for lessening environmental pollution. In preparation for the worst-case scenario in which PPE becomes a new normal (in the COVID-19 era), it is recommended that governments and other responsible organisations set up a structured monitoring system for the distribution and disposal of PPE to ensure the most effective waste management possible for continuous sustainable development. Full article
(This article belongs to the Special Issue Environmental Risk Assessment and Genotoxicity of Nanomaterials and Microparticles)
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