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de Almeida Roque A, Zablocki da Luz J, Filipak Neto F, Barjhoux I, Rioult D, de Oliveira Ribeiro CA. Low concentrations of complex mixtures of pesticides and metabolites are toxic to common Carp brain cells ( Cyprinus carpio carpio). Drug Chem Toxicol 2024:1-11. [PMID: 39210515 DOI: 10.1080/01480545.2024.2397432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 08/13/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024]
Abstract
Pesticide use increases annually, and Brazil is the world's largest consumer. However, unlike the European Union (EU), there is no established limit value for pesticide mixtures in drinking water, and therefore the concentration of pesticides can reach 3354 times the EU limit. Thus, determining the risk of exposure to pesticide mixtures and their main metabolites is challenging and requires the use of alternative methods. In the present study, the Common Carp Brain (CCB) cell line was used to evaluate the in vitro toxicity of relevant pesticide mixtures (glyphosate, 2,4-D, atrazine, and mancozeb) and their main metabolites after 72 h of exposure. The tested concentrations were based on the Acceptable Daily Intake (ADI) defined by Brazilian legislation. The results showed that cells exposed to lower concentrations of the pesticide mixtures and the pesticide + metabolite mixtures were affected by a decrease in cell confluence, resazurin metabolism, and wound healing capacity. The IBR index showed that lower concentrations had more severe effects, suggesting the absence of safe concentrations of these pesticide and metabolite mixtures for the CCB cell line within the tested concentration range. These findings raise concerns about the effects of exposure to these substances on animal and human health.
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Affiliation(s)
- Aliciane de Almeida Roque
- Department of Cell Biology, Laboratory of Cell Toxicology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Jessica Zablocki da Luz
- Department of Cell Biology, Laboratory of Cell Toxicology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Francisco Filipak Neto
- Department of Cell Biology, Laboratory of Cell Toxicology, Federal University of Paraná, Curitiba, PR, Brazil
| | - Iris Barjhoux
- UMR-I 02 INERIS-URCA-ULH SEBIO - Stress Environnementaux et BIOsurveillance des milieux aquatiques, Université de Reims Champagne-Ardenne, Reims, France
| | - Damien Rioult
- UMR-I 02 INERIS-URCA-ULH SEBIO - Stress Environnementaux et BIOsurveillance des milieux aquatiques, Université de Reims Champagne-Ardenne, Reims, France
- URCATech Plateau Technique Mobile de Cytométrie Environnementale URCATech- MOBICYTE, Université de Reims Champagne-Ardenne, Reims, France
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Ruggeri RM, Minuti A, Gianì F, Masto R, Romano D, Aliquò F, Campennì A, Campo S, Cannavò S, D'Ascola A. Polychlorinated Biphenyls (PCBS)-induced oxidative stress and inflammation in human thyrocytes: involvement of AhR and NRF-2/HO-1 pathway. Endocrine 2024:10.1007/s12020-024-04005-w. [PMID: 39174753 DOI: 10.1007/s12020-024-04005-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Accepted: 08/10/2024] [Indexed: 08/24/2024]
Abstract
PURPOSE In this in vitro study, we investigated the effects of polychlorinated biphenyls (PCBs) on human thyrocytes, with a focus on the involvement of AhR, a key player in xenobiotic response, and the anti-oxidant Nrf-2/HO-1 pathway. METHODS Primary cultured thyrocytes were exposed to the dioxin-like congeners PCB118 and PCB126 at 2.5 and 5 µM concentrations. mRNA expression was assessed by real-time PCR, and protein expression by Western Blot and ELISA, while protein quantification was assessed by densitometric analysis. RESULTS In cultured thyrocytes, PCB118 and PCB126 induced a significant (P < 0.01) increase of mRNA and protein levels of the pro-inflammatory cytokines IL-1beta and IL-6, while reducing those of thyroglobulin (TG) and NIS (p < 0.05), indicating down-regulation of these thyroid-specific genes in PCB-induced inflammation. ROS production also increased (p < 0.001). mRNA levels of AhR and the downstream molecules cytochrome P4501A, Nrf-2/HO-1 increased (p < 0.001), as well as related protein levels (p < 0.01), suggesting the activation of AhR and Nrf-2 pathways in response to PCBs exposure. AhR silencing decreased AhR-related gene expression and restored NIS and TG expression, while reducing inflammatory cytokines and oxidative stress markers (p < 0.05). CONCLUSIONS Dioxin-like PCBs (PCB118 and PCB126) may promote inflammation and oxidative stress in thyrocytes, impairing the expression of genes that are key players of thyroid function. These effects can be partially attributed to the activation of the AhR and Nrf-2 pathways. These data may contribute to explain the mechanisms underlying thyroid toxicity of PCBs, highlighting the potential role of these pollutants as a trigger of autoimmune thyroid inflammation and damage.
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Affiliation(s)
- Rosaria M Ruggeri
- Department of Human Pathology of Adulthood and Childhood DETEV, Endocrine Unit, University of Messina, Messina, Italy.
| | - Aurelio Minuti
- Department of Human Pathology of Adulthood and Childhood DETEV, Endocrine Unit, University of Messina, Messina, Italy
| | - Fiorenza Gianì
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Roberta Masto
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Davide Romano
- Department of Biomedical and Dental Sciences, and Morpho-functional Images, University of Messina, Messina, Italy
| | - Federica Aliquò
- Department of Biomedical and Dental Sciences, and Morpho-functional Images, University of Messina, Messina, Italy
| | - Alfredo Campennì
- Department of Biomedical and Dental Sciences, and Morpho-functional Images, University of Messina, Messina, Italy
| | - Salvatore Campo
- Department of Biomedical and Dental Sciences, and Morpho-functional Images, University of Messina, Messina, Italy
| | - Salvatore Cannavò
- Department of Human Pathology of Adulthood and Childhood DETEV, Endocrine Unit, University of Messina, Messina, Italy
| | - Angela D'Ascola
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
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Schluter HM, Bariami H, Park HL. Potential Role of Glyphosate, Glyphosate-Based Herbicides, and AMPA in Breast Cancer Development: A Review of Human and Human Cell-Based Studies. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2024; 21:1087. [PMID: 39200696 PMCID: PMC11354939 DOI: 10.3390/ijerph21081087] [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: 05/25/2024] [Revised: 08/07/2024] [Accepted: 08/13/2024] [Indexed: 09/02/2024]
Abstract
The potential connection between exposure to glyphosate and glyphosate-based herbicides (GBHs) and breast cancer risk is a topic of research that is rapidly gaining the public's attention due to the conflicting reports surrounding glyphosate's potential carcinogenicity. In this review, we synthesize the current published biomedical literature works that have explored associations of glyphosate, its metabolite, aminomethylphosphonic acid (AMPA), and GBHs with breast cancer risk in humans and human cell-based models. Using PubMed as our search engine, we identified a total of 14 articles that were included in this review. In the four human studies, urinary glyphosate and/or AMPA were associated with breast cancer risk, endocrine disruption, oxidative stress biomarkers, and changes in DNA methylation patterns. Among most of the 10 human cell-based studies, glyphosate exhibited endocrine disruption, induced altered gene expression, increased DNA damage, and altered cell viability, while GBHs were more cytotoxic than glyphosate alone. In summary, numerous studies have shown glyphosate, AMPA, and GBHs to have potential carcinogenic, cytotoxic, or endocrine-disruptive properties. However, more human studies need to be conducted in order for more definitive and supported conclusions to be made on their potential effects on breast cancer risk.
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Affiliation(s)
| | | | - Hannah Lui Park
- Department of Pathology and Laboratory Medicine, University of California, 839 Health Sciences Road, 218 Sprague Hall, Irvine, CA 92697, USA; (H.M.S.); (H.B.)
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Chang J, Huang R, Zhang Z, Pan Y, Ma Z, Wan B, Wang H. A ubiquitous tire rubber additive induced serious eye injury in zebrafish (Danio rerio). JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134461. [PMID: 38696959 DOI: 10.1016/j.jhazmat.2024.134461] [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: 02/23/2024] [Revised: 04/12/2024] [Accepted: 04/26/2024] [Indexed: 05/04/2024]
Abstract
Previous studies have indicated that tire wear particles (TWPs) leachate exposure induced serious eye injury in fish through inhibiting the thyroid peroxidase (TPO) enzyme activity. However, the main TPO inhibitors in the leachate were still unknown. In this study, we identified 2-Mercaptobenzothiazole (MBT) as the potential TPO inhibitor in the TWPs leachate through references search, model prediction based on Danish QSAR and ToxCast database, molecular docking, and in vivo assay. We further explored the toxic mechanism of MBT under environmentally relevant concentrations. The decreased eye size of zebrafish larvae was mainly caused by the decreased lens diameter and cell density in the inner nuclear layer (INL) and outer nuclear layer (ONL) of the retina. Transcriptomics analysis demonstrated that the eye phototransduction function was significantly suppressed by inhibiting the photoreceptor cell proliferation process after MBT exposure. The altered opsin gene expression and decreased opsin protein levels were induced by weakening thyroid hormone signaling after MBT treatment. These results were comparable to those obtained from a known TPO inhibitor, methimazole. This study has identified MBT as the primary TPO inhibitor responsible for inducing eye impairment in zebrafish larvae exposed to TWPs leachate. It is crucial for reducing the toxicity of TWPs leachate in fish.
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Affiliation(s)
- Jing Chang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing RD 18, Beijing 100085, China
| | - Rui Huang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing RD 18, Beijing 100085, China; University of Chinese Academy of Sciences, Yuquan RD 19 a, Beijing 100049, China
| | - Zhaoguang Zhang
- North China Electric Power University, Beinong RD 2, Beijing 102206, China
| | - Yunrui Pan
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing RD 18, Beijing 100085, China; University of Chinese Academy of Sciences, Yuquan RD 19 a, Beijing 100049, China
| | - Zheng Ma
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing RD 18, Beijing 100085, China; University of Chinese Academy of Sciences, Yuquan RD 19 a, Beijing 100049, China
| | - Bin Wan
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing RD 18, Beijing 100085, China
| | - Huili Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing RD 18, Beijing 100085, China.
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Zhang L, Chen L, Qi M, Yu F, Ni X, Hong H, Xu H, Xu S. Glyphosate induces autophagy in hepatic L8824 cell line through NO-mediated activation of RAS/RAF/MEK/ERK signaling pathway and energy metabolism disorders. FISH & SHELLFISH IMMUNOLOGY 2023; 137:108772. [PMID: 37100311 DOI: 10.1016/j.fsi.2023.108772] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/19/2023] [Accepted: 04/24/2023] [Indexed: 05/22/2023]
Abstract
Glyphosate is an herbicide commonly used worldwide, and its substantial use causes widespread pollution with runoff. However, research on glyphosate toxicity has mostly remained at the embryonic level and existing studies are limited. In the present study, we investigated whether glyphosate can induce autophagy in hepatic L8824 cells by regulating energy metabolism and rat sarcoma (RAS)/rapidly accelerated fibrosarcoma (RAF)/mitogen-activated extracellular signal-regulated kinase (MEK)/extracellular regulated protein kinases (ERK) signaling by activating nitric oxide (NO). First, we selected 0, 50, 200, and 500 μg/mL as the challenge doses, according to the inhibitory concentration of 50% (IC50) of glyphosate. The results showed that glyphosate exposure increased the enzyme activity of inducible nitric oxide synthase (iNOS), which in turn increased the NO content. The activity and expression of enzymes related to energy metabolism, such as hexokinase (HK)1, HK2, phosphofructokinase (PFK), phosphokinase (PK), succinate dehydrogenase (SDH), and nicotinamide adenine dinucleotide with hydrogen (NADH), were inhibited, and the RAS/RAF/MEK/ERK signaling pathway was activated. This led to the negative expression of mammalian target of rapamycin (mTOR) and P62 in hepatic L8824 cells and the activation of the autophagy marker genes microtubule-associated proteins light chain 3 (LC3) and Beclin1 to induce autophagy. The above results were dependent on glyphosate concentration. To verify whether autophagy can be excited by the RAS/RAF/MEK/ERK signaling pathway, we treated L8824 cells with the ERK inhibitor U0126 and found that the autophagy gene LC3 was reduced due to the inhibition of ERK, thus demonstrating the reliability of the results. In conclusion, our results demonstrate that glyphosate can induce autophagy in hepatic L8824 cells by activating NO, thus regulating energy metabolism and the RAS/RAF/MEK/ERK signaling pathway.
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Affiliation(s)
- Linlin Zhang
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang Uygur Autonomous Region, 843300, PR China
| | - Lu Chen
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang Uygur Autonomous Region, 843300, PR China
| | - Meng Qi
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang Uygur Autonomous Region, 843300, PR China
| | - Fuchang Yu
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang Uygur Autonomous Region, 843300, PR China
| | - Xiaotong Ni
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang Uygur Autonomous Region, 843300, PR China
| | - Haozheng Hong
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang Uygur Autonomous Region, 843300, PR China
| | - Haotian Xu
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang Uygur Autonomous Region, 843300, PR China.
| | - Shiwen Xu
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang Uygur Autonomous Region, 843300, PR China; Key Laboratory of Tarim Animal Husbandry Technology Corps, Tarim University, Alar, Xinjiang Uygur Autonomous Region, 843300, PR China.
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