1
|
Ghimici L, Ghiorghiță CA, Năfureanu MM. Abatement of some commercial fungicide content from model dispersions by a new thiourea-graft-polyethyleneimine derivative. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:67539-67551. [PMID: 37115448 DOI: 10.1007/s11356-023-27260-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/23/2023] [Indexed: 05/25/2023]
Abstract
A new derivative of polyethyleneimine (PEI) with 9% degree of substitution of its primary and secondary amino groups with thiourea moieties (TU9-PEI) has been synthesized and investigated as flocculant in model suspensions of commercial fungicide formulations Dithane M45, Melody Compact 49 WG, Cabrio®Top, and their mixtures. The structure of TU9-PEI, obtained by an aqueous one-pot strategy involving formaldehyde mediated coupling of PEI and TU, was confirmed by FTIR and 1H NMR spectroscopy as well as the streaming potential measurements. The settling time, polymer dose, and fungicide type and concentration were the parameters used for assessing the flocculation ability of the new polycation sample. The UV-Vis spectroscopy measurements revealed a good removal efficiency of TU9-PEI for all of the fungicides investigated, between 88 and 94%. Slightly higher removal percent was found for greater fungicide concentrations. The charge neutralization was indicated by zeta potential measurements (values close to zero recorded at the optimum polymer dose) as the main mechanism which contributed to the Dithane and Cabrio®Top particle removal and a combined effect of the TU9-PEI/fungicide particle electrostatic attractions and hydrogen bonds between both the amine and thiourea groups of the polycation chains and the hydroxyl ones on the copper oxychloride particles (negative values) in case of the Melody Compact 49 WG particle separation. Particle size and surface morphology analysis data gave supplementary evidences regarding the TU9-PEI ability to separate the fungicides investigated from simulated wastewater.
Collapse
Affiliation(s)
- Luminita Ghimici
- "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania.
| | | | - Maria-Magdalena Năfureanu
- "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487, Iasi, Romania
| |
Collapse
|
2
|
Wang Y, Gao Z, Liu C, Mao L, Liu X, Ren J, Lu Z, Yao J, Liu X. Mixture toxicity of pyraclostrobine and metiram to the zebrafish (Danio rerio) and its potential mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:44400-44414. [PMID: 36692725 DOI: 10.1007/s11356-023-25518-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 01/19/2023] [Indexed: 01/25/2023]
Abstract
The interplay between pesticides plays a critical role in ecotoxicology since these chemicals rarely emerge as single substances but rather in mixtures with other chemicals. In the present work, we purposed to clarify the combined toxic impacts of pyraclostrobine (PYR) and metiram (MET) on the zebrafish by using numerous indicators. Results exhibited that the 4-day LC50 value of MET to fish embryos was 0.0025 mg a.i. L-1, which was lower compared with PYR (0.019 mg a.i. L-1). Combinations of PYR and MET presented a synergetic impact on fish embryos. Contents of POD, CYP450, and VTG were drastically increased in the plurality of the single and joint treatments relative to the baseline value. Three genes, including vtg1, crh, and il-8, related to the endocrine and immune systems, were also surprisingly up-regulated when fish were challenged by the individual and mixture pesticides compared with the baseline value. These results afforded valuable information on the latent toxicity mechanisms of co-exposure for PYR and MET in the early growth stage of fish. Moreover, our data also revealed that frequent application of these two pesticides might exert a potentially ecotoxicological hazard on aquatic ecosystems. Collectively, the present study provided valuable guidance for the risk evaluation of chemical combinations.
Collapse
Affiliation(s)
- Yanhua Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences, HangzhouZhejiang, 310021, China
| | - Zhongwen Gao
- College of Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Chuande Liu
- Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Liangang Mao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xinju Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences, HangzhouZhejiang, 310021, China
| | - Jindong Ren
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences, HangzhouZhejiang, 310021, China
| | - Zeqi Lu
- Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Jie Yao
- Yantai Academy of Agricultural Sciences, Yantai, 265500, China
| | - Xuan Liu
- Yantai Academy of Agricultural Sciences, Yantai, 265500, China.
| |
Collapse
|
3
|
Çobanoğlu H, Belivermiş M, Sıkdokur E, Kılıç Ö, Çayır A. Genotoxic and cytotoxic effects of polyethylene microplastics on human peripheral blood lymphocytes. CHEMOSPHERE 2021; 272:129805. [PMID: 35534956 DOI: 10.1016/j.chemosphere.2021.129805] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/11/2021] [Accepted: 01/27/2021] [Indexed: 06/14/2023]
Abstract
Currently, we need emerging initial data regarding how plastic exposures affect cellular and molecular components and how such interactions will be crucial for human health. We aimed to determine the genotoxic and cytotoxic effects of microplastic (MPs,10-45 μm, polyethylene) on human peripheral lymphocytes by using the cytokinesis-block micronucleus cytome (CBMN) assay, which is a comprehensive method to reveal a range of mechanisms, not only diseases but also response to environmental exposures. We measured micronucleation (MN), nucleoplasmic bridge formation (NPB), and nuclear bud formation (NBUD) in human peripheral blood lymphocytes. We also measured the cytokinesis-block proliferation index (CBPI) to calculate cytostasis, which indicates cytotoxicity in lymphocytes treated with five different MPs concentrations for 48 h. Even lower concentrations of MPs increased the level of genomic instability. We found that the in vitro MP exposure significantly increased MN, NPB, and NBUD frequencies. Since we investigated the effect of larger particles relative to the lymphocytes, mechanic interaction of MPs with cells, the release of monomer and additives from MPs could be suggested as possible mechanisms accounting for increasing genomic instabilities. We did not observe a decrease in the cell proliferation index, indicating a lack of MPs' cytotoxic potential. To the best of our knowledge, our study is the first to identify MPs' genotoxic potential in human peripheral blood lymphocytes. We suggested further studies to investigate the genotoxic and cytotoxic potential of smaller plastics and the chronic effect of MP on the human population.
Collapse
Affiliation(s)
- Hayal Çobanoğlu
- Health Services Vocational College, Çanakkale Onsekiz Mart University, 17100, Çanakkale, Turkey
| | - Murat Belivermiş
- Department of Biology, Faculty of Science, Istanbul University, 34134, Vezneciler, Istanbul, Turkey
| | - Ercan Sıkdokur
- Department of Biology, Faculty of Science, Istanbul University, 34134, Vezneciler, Istanbul, Turkey
| | - Önder Kılıç
- Department of Biology, Faculty of Science, Istanbul University, 34134, Vezneciler, Istanbul, Turkey
| | - Akın Çayır
- Health Services Vocational College, Çanakkale Onsekiz Mart University, 17100, Çanakkale, Turkey.
| |
Collapse
|
4
|
Sarkar S, Singh PC. Mechanistic Aspects of Fungicide-Induced DNA Damage: Spectroscopic and Molecular Dynamics Simulation Studies. J Phys Chem B 2019; 123:8653-8661. [DOI: 10.1021/acs.jpcb.9b06009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sunipa Sarkar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Prashant Chandra Singh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| |
Collapse
|