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de Mendonça Francisco C, Pavanin LA, Morelli S, Bravo JVM, Pereira BB. Using native fish in eco-genotoxic assessment of heavy metal contamination pollution arising from nearby large Brazilian rivers. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2023; 86:74-85. [PMID: 36628475 DOI: 10.1080/15287394.2022.2164754] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Worldwide water quality has declined progressively due to continuous pollution of aquatic resources by agrochemicals in particular heavy metals. Fish genotoxicity biomarkers are vital to identify and complement chemical parameters for determining environmental risk of adverse effects. Therefore, it was of interest to examine the eco-genotoxicity attributed to water pollution over different stream sections of Brazilian rivers by using Cichlasoma paranaense (Teleostei: Cichlidae), a neotropical freshwater cichlid fish, as a biological model. Chemical analysis of water and sediments collected from different Brazilian rivers sites demonstrated contamination by metals. Cichlasoma paranaense were collected at a reference location (a permanent water preservation area), maintained in the lab under standard conditions (controlled temperature, lighting, daily feeding, and constant aeration) and exposed to environmental samples of water and sediments. Subsequently, micronucleus (MN) and nuclear abnormalities (NA) frequencies were assessed in erythrocytes obtained from the caudal and gill regions. The highest concentrations of Cu were found in samples from river sites with forest fragmentation attributed to intensive agriculture practices. Similarly, exposure of fish to samples from agricultural areas induced significantly higher number of genotoxic effects. There was no marked difference between the tissues (tail and gill) regarding the observed frequencies of MN and NA. Thus C. paranaense fish served as a reliable model for detecting genotoxic effects, especially when water samples were collected near the discharge of agrochemicals. Evidence indicates that this method be considered for other global river sites which are also exposed to agrochemicals discharges containing Cu.
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Affiliation(s)
- Carine de Mendonça Francisco
- Institute of Biotechnology, Umuarama Campus, Avenida Pará, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Luiz Alfredo Pavanin
- Institute of Chemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Sandra Morelli
- Institute of Biotechnology, Umuarama Campus, Avenida Pará, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - João Vitor M Bravo
- Institute of Geography, Santa Mônica Campus, Avenida João Naves de Ávila, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Boscolli Barbosa Pereira
- Institute of Biotechnology, Umuarama Campus, Avenida Pará, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
- Institute of Geography, Santa Mônica Campus, Avenida João Naves de Ávila, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
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Bai W, Takao Y, Kubo T. First evaluation of genotoxicity of strong bases and zwitterions in treated household effluents. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126053. [PMID: 34492893 DOI: 10.1016/j.jhazmat.2021.126053] [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: 02/06/2021] [Revised: 04/28/2021] [Accepted: 05/03/2021] [Indexed: 06/13/2023]
Abstract
Various genotoxic substances in household effluents have not been sufficiently studied. The purpose of this study is to evaluate them using the umu test after dividing them based on the acid-base properties of their functional groups by solid-phase extraction cartridges. The results of the samples concentrated with reverse-phase cartridges showed that the substances with acid functional groups had stronger genotoxicity as 4.1-12.1 ng-4-NQO/mL without S9 enzyme and 17.4-51.8 ng-2-AA/mL with S9 enzyme, while the basic substances also showed a certain degree of toxicity. The results of dividing the effluents by acid-base properties using ion-exchange cartridges showed that chemical substances with strong acid functional groups did not demonstrate genotoxicity. It was found that the genotoxicity of chemicals with functional groups of weak acids was half of that of the total amount. The genotoxicity of the neutral substance was not strong, and the genotoxicity of the weak basic substances was negligible. The zwitterions and substances with strong basic functional groups showed about half the total genotoxicity. This is the first report that has investigated the genotoxicity of zwitterions in effluents.
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Affiliation(s)
- Wenzhi Bai
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
| | - Yuji Takao
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Takashi Kubo
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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Lee BM, Choi M, Shin I, Kim J, Choi Z, Kim K, Choi K, Yang S, So DY, Tae Ju S, Kwon S. Risk communication for labeling all ingredients in consumer products. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2020; 83:509-524. [PMID: 32552538 DOI: 10.1080/15287394.2020.1780174] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The labeling of all ingredients contained in consumer products has been requested by consumers concerned regarding their safety. Consequently, regulatory agencies have set guidelines for industries on how to provide safety information regarding the ingredients in their products. However, discordant opinions were raised from stakeholders, resulting in the formation of a risk communication forum among industries, regulatory agencies, consumer groups, and academia. There are several methods that might be utilized to provide ingredient information to consumers: (1) listing all ingredients on the label of products, (2) providing major ingredients on the label of products, (3) presenting all ingredients on the websites of each manufacturer, and (4) listing major ingredients on the label of products and the remainder of ingredients (not on the label) on the websites. Each method might have its own advantages and disadvantages with respect to providing the information regarding the names of the ingredients used in consumer products to the consumers. A continuous risk communication forum might be an effective tool to facilitate an improved understanding of chemical information, toxicological science, regulatory guidelines, labeling methods, and consumers' concern. This study suggests that risk communication efforts may be helpful and a good opportunity for stakeholders to exchange opinions and reach a harmonious conclusion on labeling of consumer products ingredients.
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Affiliation(s)
- Byung-Mu Lee
- Division of Toxicology, College of Pharmacy, Sungkyunkwan University , Suwon, South Korea
| | - Mira Choi
- Cosmetics Policy Division, Biopharmaceuticals and Herbal Medicine Bureau, Ministry of Food and Drug Safety , Cheongju-si, South Korea
| | - Insoo Shin
- Communication and Coordination Division, Ministry of Food and Drug Safety , Cheongju-si, South Korea
| | - Jinyong Kim
- Environment, Safety and Health Department, Chemical Products and Biocides Safety Center, Korea Environmental Industry and Technology Institute , Seoul, South Korea
| | | | - Kyoungeun Kim
- Product Safety and Regulatory Assurance, Yuhan-Kimberly , Yongin-si, South Korea
| | - Kyungmoon Choi
- Global Product Stewardship, Procter and Gamble Korea S&D, Co ., Seoul, South Korea
| | - Seyun Yang
- Regulatory Affairs Lab, Amorepacific Corporation R&D Center , Yongin-si, South Korea
| | - Dam Yi So
- Communication and Coordination Division, Ministry of Food and Drug Safety , Cheongju-si, South Korea
| | - Seon Tae Ju
- Consumer Risk Prevention Bureau, Ministry of Food and Drug Safety , Cheongju-si, South Korea
| | - Seok Kwon
- Global Product Stewardship, Research and Development, Singapore Innovation Center, Procter & Gamble (P&G) International Operations , Singapore
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Kubo T, Bai W, Nagae M, Takao Y. Seasonal Fluctuation of Polycyclic Aromatic Hydrocarbons and Aerosol Genotoxicity in Long-Range Transported Air Mass Observed at the Western End of Japan. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17041210. [PMID: 32069996 PMCID: PMC7068599 DOI: 10.3390/ijerph17041210] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/06/2020] [Accepted: 02/09/2020] [Indexed: 11/30/2022]
Abstract
In order to clarify the level transboundary air pollution caused by polycyclic aromatic hydrocarbons (PAHs) and genotoxic substances, aerosols were collected from forest and suburban sites in Nagasaki, west Japan, for 6 years. The PAH concentration was measured, and the genotoxicity of the substances were evaluated using the umu test. The results showed no notable trends in the concentration or toxicity of either sites throughout the study period. The suburban and forest sites shared similar seasonal fluctuation patterns and quantitative values, suggesting that the western end of Japan might be affected by long-range transported pollutants, especially in winter. PAH concentration and genotoxicity showed the same seasonal patterns of increased levels in winter and lower levels in summer. This suggests that PAHs and genotoxic substances were correlated and share common sources. Back trajectory and source analyses were conducted using the diagnostic ratios of PAHs. It was predicted that air pollution by PAHs at the forest site arise predominantly as a result of biomass or coal combustion in continental regions, such as northern parts of China and the Korean Peninsula. This is particularly expected in winter. Therefore, genotoxic substances would also be strongly influenced by transboundary pollution from the continental region. In addition, it was estimated that the contribution of transboundary PAH pollution could reach 70% at the suburban site in winter.
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Affiliation(s)
- Takashi Kubo
- Faculty of Environmental Science, Nagasaki University, Nagasaki 852-8521, Japan
| | - Wenzhi Bai
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Masaki Nagae
- Faculty of Environmental Science, Nagasaki University, Nagasaki 852-8521, Japan
| | - Yuji Takao
- Faculty of Environmental Science, Nagasaki University, Nagasaki 852-8521, Japan
- Correspondence: ; Tel.: +81-95-819-2753
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