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Gu W, Xing W, Liang M, Wang Z, Zhang B, Sun S, Fan D, Wang L. Occurrence, distribution, and risk assessment of pesticides in surface water and sediment in Jiangsu Province, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:118418-118429. [PMID: 37907825 DOI: 10.1007/s11356-023-30416-9] [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: 07/10/2023] [Accepted: 10/08/2023] [Indexed: 11/02/2023]
Abstract
The occurrence and distribution of 157 pesticides were investigated in surface water and sediment in Jiangsu Province, China. Gas chromatography-mass spectrometry was used to analyze and quantify these pesticides, and the risk quotient method was used to evaluate their respective environmental risk. The results showed that 91 pesticides were detected in surface water. The organophosphates (OPPs), fungicides, and amide herbicides were predominant. The total concentration in surface water ranged from 63.7 to 22,463 ng/L, 3.90 to 7262 ng/L, and ND to 34,120 ng/L, respectively. The mean concentration was 3479 ng/L, 1644 ng/L, and 1878 ng/L, respectively. The concentration range of detected pesticides in the Yangtze River Basin was generally lower than that in the Huai River Basin. In sediment samples, a total of 63 pesticides were detected. OPPs and amide herbicides were also ranked highest; the total concentration in sediment samples ranged from 2951 to 47,739 ng/g and 106 to 12,996 ng/g, respectively. And the mean concentrations was 6971 ng/g and 5130 ng/g, respectively. Suqian City had the highest concentration for OPPs and amide herbicides in the Huai River Basin, followed by Huai'an City, while Nanjing City and Yangzhou City ranked highest in the Yangtze River Basin. The spatial distribution of pesticides in Jiangsu Province indicated a concentration significantly higher in the western and northern regions than in the eastern and southern regions, and a concentration generally higher in lakes than in rivers. The risk assessment results showed that OPPs, fungicides, amide herbicides, organochlorines, and triazine herbicides in most surface water samples posed a high risk and had regional pollution characteristics. In sediment samples, organochlorines, carbamates, other herbicides, and other insecticides posed a high risk in northern Jiangsu Province, whereas OPPs, amide herbicides, and triazine herbicides posed high risks everywhere in Jiangsu Province.
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Affiliation(s)
- Wen Gu
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing, 210042, China
| | - Weilong Xing
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing, 210042, China
| | - Mengyuan Liang
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing, 210042, China
| | - Zhen Wang
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing, 210042, China
| | - Bing Zhang
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing, 210042, China
| | - Shuai Sun
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing, 210042, China
| | - Deling Fan
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing, 210042, China
| | - Lei Wang
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing, 210042, China.
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Molecular and Biochemical Evidence of the Toxic Effects of Terbuthylazine and Malathion in Zebrafish. Animals (Basel) 2023; 13:ani13061029. [PMID: 36978570 PMCID: PMC10044699 DOI: 10.3390/ani13061029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/06/2023] [Accepted: 03/09/2023] [Indexed: 03/15/2023] Open
Abstract
Our research sought to determine the molecular and biochemical effects of environmentally relevant exposure to commonly used chloro-s-triazine herbicide terbuthylazine and organophosphate insecticide malathion on zebrafish. To this aim, mature zebrafish were exposed to 2 and 30 µg L−1 terbuthylazine and 5 and 50 µg L−1 malathion alone and in combination for 14 days. Aside from the accumulation of TBARS and protein carbonyls, a decrease in antioxidants and succinate dehydrogenase activity, an increase in oxidized glutathione, and enhanced apoptosis via Caspase-3 and BAX overexpression were observed. Furthermore, terbuthylazine and malathion induced mitochondrial swelling (up to 210% after single exposure and up to 470% after co-exposure) and lactate dehydrogenase leakage (up to 268% after single exposure and up to 570% after co-exposure) in a concentration-dependent manner. Significant upregulation of ubiquitin expression and increased cathepsin D activity were characteristics that appeared only upon terbuthylazine exposure, whereas the induction of IgM was identified as the specific characteristic of malathion toxicity. Meanwhile, no alterations in the zebrafish hypothalamic-pituitary-thyroid axis was observed. Co-exposure increased the adverse effects of individual pesticides on zebrafish. This study should improve the understanding of the mechanisms of pesticide toxicity that lead to fish impairment and biodiversity decline.
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Li X, Hu X, Jiang Y, Wang D, Wang T, Li B. Autonomic behavioral impairment induced by simazine exposure during early life of male mouse is mediated by Lmx1a/Wnt1 pathway. ENVIRONMENTAL TOXICOLOGY 2022; 37:776-788. [PMID: 34936186 DOI: 10.1002/tox.23442] [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: 08/05/2021] [Revised: 12/06/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
Simazine is a widely used herbicide and known as an environmental estrogen. Multiple studies have proved simazine can induced the degeneration of dopaminergic neuron resulting in a degenerative disease-like syndrome. Herein, we explored the neurotoxicity of simazine on the dopaminergic nervous system of embryos and weaned offspring during the maternal gestation period or the maternal gestation and lactation periods. We found that simazine disturbed the crucial components expression involved in Lmx1a/Wnt1 pathway of dopaminergic neuron in embryonic and weaned offspring. Furthermore, morphological and behavioral tests performed on weaned male offspring treated by simazine suggested that the grip strength, autonomic exploring, and the space sense ability were weakened, as well as the pathological damage of dopaminergic neuron was clearly observed. But, the same neurotoxicity of simazine is less significantly observed in female offspring. Our findings will provide reliable reference for the determination of environmental limits and new insight into the pathogenesis of nonfamilial neurodegenerative diseases related to environmental risk factors.
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Affiliation(s)
- Xueting Li
- Department of Hygienic Toxicology, College of Public Health, Harbin Medical University, Harbin, China
- Department of Epidemiology, College of Public Health, Harbin Medical University, Harbin, China
| | - Xiaomeng Hu
- Department of Hygienic Toxicology, College of Public Health, Harbin Medical University, Harbin, China
| | - Yujia Jiang
- Department of Hygienic Toxicology, College of Public Health, Harbin Medical University, Harbin, China
| | - Dandan Wang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, China
| | - Ting Wang
- Department of Hygienic Toxicology, College of Public Health, Harbin Medical University, Harbin, China
| | - Baixiang Li
- Department of Hygienic Toxicology, College of Public Health, Harbin Medical University, Harbin, China
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Ma K, Wu HY, Wang SY, Li BX. The Keap1/Nrf2-ARE signaling pathway is involved in atrazine induced dopaminergic neurons degeneration via microglia activation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 226:112862. [PMID: 34624533 DOI: 10.1016/j.ecoenv.2021.112862] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/27/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVE To investigate the mechanisms of ATR-induced dopaminergic toxicity by microglia activation and the response of the Keap1/ Nrf2- ARE signaling pathway. METHODS Wistar rats were treated with 50, 100 and 200 mg/kg ATR and BV-2 microglia cells were treated with 50, 100 μM ATR or 100 ng/mL LPS, respectively. Rats behavioral responses and histopathological changes were monitored. Immunohistochemical and immunofluorescence analysis detected Iba-1 and TH+ cells in rats. Keap1/Nrf2-ARE signaling-related proteins and inflammatory factors from BV-2 cells and rats were detected using ELISA, Western blot and Real-time PCR. RESULTS After ATR treatment, the grip strength of Wistar rats was significantly decreased, and anxiety were clearly observed. TH+ neurons were reduced, however, the number of microglia cells and Iba-1 levels were increased clearly in SN. The release of ROS, TNF-α and IL-Iβ were increased, and levels of SOD and GSH-Px were significantly decreased. Keap1 mRNA expression and protein levels were decreased, while nuclear Nrf2 mRNA expression and protein levels were both increased in vivo and in vitro. CONCLUSION ATR could significantly activate microglia and exacerbate neurotoxicity and neuroinflammation, leading to accelerate dopaminergic neuron cell death by inhibiting Keap1/Nrf2-ARE signaling pathway.
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Affiliation(s)
- Kun Ma
- Department of Hygienic Toxicology, Public Health College, Harbin Medical University, Harbin, Heilongjiang Province 150081, PR China.
| | - Hao-Yu Wu
- Department of Environmental Health, Public Health College, Harbin Medical University, Harbin, Heilongjiang Province 150081, PR China.
| | - Sheng-Yuan Wang
- Department of Occupational Health, Public Health College, Harbin Medical University, Harbin, Heilongjiang Province 150081, PR China.
| | - Bai-Xiang Li
- Department of Hygienic Toxicology, Public Health College, Harbin Medical University, Harbin, Heilongjiang Province 150081, PR China.
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Li X, Li J, Li P, Jiang Y, Wu Y, Li B. Injury to dopaminergic neurons development via the Lmx1a/Wnt1 autoregulatory loop induced by simazine. Toxicol Lett 2020; 333:279-289. [PMID: 32822773 DOI: 10.1016/j.toxlet.2020.07.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/17/2020] [Accepted: 07/26/2020] [Indexed: 10/23/2022]
Abstract
Simazine is a kind of persistent organic pollutant that is detected in both ground and water and has several routes of exposure. Here, we explored the mechanisms underlying simazine-related effects on dopaminergic neurons via development-related factors using mouse embryos and embryonic mesencephalic hybrid cell line (MN9D cells). We treated pregnant mice with 50 μg/kg bw, 200 μg/kg bw simazine from the 0.5 day to the 10.5 day of embryonic phase and MN9D cells with 600 μM simazine for 24 h to research the mechanism of dopaminergic neurons acute respond to simazine through preliminary experiments. Protein expressions of LIM homeobox transcription factor 1-alpha (Lmx1a) and LIM homeobox transcription factor 1-beta (Lmx1b) displayed a dose- and time-dependent increase after the exposure to simazine. In the 200 μg/kg bw of embryos and the 24h-600 μM of MN9D cells, protein levels of dopaminergic developmental factors were significantly upregulated, and dopaminergic function was significantly damaged for the abnormal expression of Dyt5b. We demonstrated simazine induced the injury to dopaminergic neurons via the Lmx1a/wingless-related integration site 1 (Wnt1) and Lmx1b pathways. In the transfection experiments, we knocked down Lmx1a and Lmx1b of cells to verify the potential target of simazine-induced injury to dopaminergic neurons, respectively. We detected the protein and mRNA levels of development-related genes of dopaminergic neurons and intracellular dopamine levels in different treatment groups. Based on our experiments' results, we demonstrated an acute response to 24 h-600 μM simazine treatment, the simazine-induced injury to dopaminergic neuronal which leads to abnormal dopamine levels and dopaminergic impairment is via the activation of the Lmx1a/Wnt1 autoregulatory loop. Lmx1a is a promising target in the search for the mechanisms underlying simazine-induced dopaminergic injury.
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Affiliation(s)
- Xueting Li
- Department of Toxicology, College of Public Health, Harbin Medical University, 157 Baojian Street, Harbin, Heilongjiang Province, 150081, PR China
| | - Jianan Li
- Department of Toxicology, College of Public Health, Harbin Medical University, 157 Baojian Street, Harbin, Heilongjiang Province, 150081, PR China
| | - Peng Li
- Department of Toxicology, College of Public Health, Harbin Medical University, 157 Baojian Street, Harbin, Heilongjiang Province, 150081, PR China
| | - Yujia Jiang
- Department of Toxicology, College of Public Health, Harbin Medical University, 157 Baojian Street, Harbin, Heilongjiang Province, 150081, PR China
| | - Yanping Wu
- Department of Toxicology, College of Public Health, Harbin Medical University, 157 Baojian Street, Harbin, Heilongjiang Province, 150081, PR China
| | - Baixiang Li
- Department of Toxicology, College of Public Health, Harbin Medical University, 157 Baojian Street, Harbin, Heilongjiang Province, 150081, PR China.
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Zhan J, Liang Y, Liu D, Ma X, Li P, Liu C, Liu X, Wang P, Zhou Z. Antibiotics may increase triazine herbicide exposure risk via disturbing gut microbiota. MICROBIOME 2018; 6:224. [PMID: 30545405 PMCID: PMC6291969 DOI: 10.1186/s40168-018-0602-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 11/25/2018] [Indexed: 05/30/2023]
Abstract
BACKGROUND Antibiotics are commonly used worldwide, and pesticide is a kind of xenobiotic to which humans are frequently exposed. The interactive impact of antibiotics on pesticides has rarely been studied. We aim to investigate the effects of antibiotics on the pesticide exposure risk and whether gut microbiota altered by antibiotics has an influence on pesticide bioavailability. Furthermore, we explored the mechanisms of gut microbiota affecting the fate of pesticides in the host. RESULTS The oral bioavailability of triazine herbicides significantly increased in the rats treated with ampicillin or antibiotic cocktails. The antibiotic-altered gut microbiota directly influenced the increased pesticide bioavailability through downregulating hepatic metabolic enzyme gene expression and upregulating intestinal absorption-related proteins. CONCLUSIONS Antibiotics could increase the pesticide bioavailability and thereby may increase the pesticide exposure risk. The antibiotic-altered gut microbiota that could alter the hepatic metabolic enzyme gene expression and intestinal absorption-related proteome was a critical cause of the increased bioavailability. This study revealed an undiscovered potential health impact of antibiotics and reminded people to consider the co-exposed xenobiotics when taking antibiotics.
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Affiliation(s)
- Jing Zhan
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Yiran Liang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Donghui Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Xiaoran Ma
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Peize Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Chang Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Xueke Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Peng Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, People's Republic of China.
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing, 100193, People's Republic of China.
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Wrobel MH. Do chlorinated insecticides (aldrin and DDT) or products of their transformations (dieldrin and DDE) impair signal transfer from regulators (oxytocin and relaxin) of bovine myometrium motility in vitro? ENVIRONMENTAL RESEARCH 2018; 167:234-239. [PMID: 30059857 DOI: 10.1016/j.envres.2018.07.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/10/2018] [Accepted: 07/17/2018] [Indexed: 06/08/2023]
Abstract
Aldrin, dieldrin, and DDT are chlorinated insecticides that are unintentionally widespread in the environment. It was previously shown that all of the aforementioned compounds increased secretion of ovarian oxytocin (OT), which is a potent uterotonic agent. However, only DDT and its metabolite (DDE) promoted, while aldrin and dieldrin inhibited basal and OT-stimulated myometrial contractions in cows. Therefore, the aim of this study was to determine the effect of these treatments on the reception and further transmission of the OT-signal for myometrial contractions and on the levels of contractile-associated integral proteins (caveolin; CAV) and gap junction proteins (GAPs). Moreover, their effect on reception of signal for the relaxation of myometrium was also studied. Myometrial strips or cells from non-pregnant (8-12 days of oestrous cycle) or late pregnant (5-8 months) cows were incubated with the studied compounds at environmentally relevant dose (10 ng/ml), which was chosen according to the previous studies. DDT and DDE increased the CAV protein level, while dieldrin decreased the GAPs level. None of the studied compounds affected mRNA expression of the OT receptor and expression of the second messengers (DAG, IP3, PKC, MLCK). Oppositely, DDE and dieldrin decreased mRNA expression of the relaxin (RLX) receptor. Changes in the amount of contractile-associated integral proteins may be involved in the molecular mechanism underlying the adverse effects of the studied insecticides on myometrial motility. Admittedly, none of the studied compounds impaired the reception or further intracellular transmission of the OT signal to promote contractions during the oestrous cycle, while they showed potential to impair the transmission the signal between cells as well as to diminish the effects of one of the primary inhibitor (RLX) of myometrial contractions during gestation.
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Affiliation(s)
- Michal Hubert Wrobel
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima Street 10, 10-748 Olsztyn, Poland.
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Lian X, Beer-Hammer S, König GM, Kostenis E, Nürnberg B, Gollasch M. RXFP1 Receptor Activation by Relaxin-2 Induces Vascular Relaxation in Mice via a Gα i2-Protein/PI3Kß/γ/Nitric Oxide-Coupled Pathway. Front Physiol 2018; 9:1234. [PMID: 30233409 PMCID: PMC6131674 DOI: 10.3389/fphys.2018.01234] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 08/15/2018] [Indexed: 01/10/2023] Open
Abstract
Background: Relaxins are small peptide hormones, which are novel candidate molecules that play important roles in cardiometablic syndrome. Relaxins are structurally related to the insulin hormone superfamily, which provide vasodilatory effects by activation of G-protein-coupled relaxin receptors (RXFPs) and stimulation of endogenous nitric oxide (NO) generation. Recently, relaxin could be demonstrated to activate Gi proteins and phosphoinositide 3-kinase (PI3K) pathways in cultured endothelial cells in vitro. However, the contribution of the Gi-PI3K pathway and their individual components in relaxin-dependent relaxation of intact arteries remains elusive. Methods: We used Gαi2- (Gnai2-/-) and Gαi3-deficient (Gnai3-/-) mice, pharmacological tools and wire myography to study G-protein-coupled signaling pathways involved in relaxation of mouse isolated mesenteric arteries by relaxins. Human relaxin-1, relaxin-2, and relaxin-3 were tested. Results: Relaxin-2 (∼50% relaxation at 10-11 M) was the most potent vasodilatory relaxin in mouse mesenteric arteries, compared to relaxin-1 and relaxin-3. The vasodilatory effects of relaxin-2 were inhibited by removal of the endothelium or treatment of the vessels with N (G)-nitro-L-arginine methyl ester (L-NAME, endothelial nitric oxide synthase (eNOS) inhibitor) or simazine (RXFP1 inhibitor). The vasodilatory effects of relaxin-2 were absent in arteries of mice treated with pertussis toxin (PTX). They were also absent in arteries isolated from Gnai2-/- mice, but not from Gnai3-/- mice. The effects were not affected by FR900359 (Gαq protein inhibitor) or PI-103 (PI3Kα inhibitor), but inhibited by TGX-221 (PI3Kβ inhibitor) or AS-252424 (PI3Kγ inhibitor). Simazine did not influence the anti-contractile effect of perivascular adipose tissue. Conclusion: Our data indicate that relaxin-2 produces endothelium- and NO-dependent relaxation of mouse mesenteric arteries by activation of RXFP1 coupled to Gi2-PI3K-eNOS pathway. Targeting vasodilatory Gi-protein-coupled RXFP1 pathways may provide promising opportunities for drug discovery in endothelial dysfunction and cardiometabolic disease.
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Affiliation(s)
- Xiaoming Lian
- Experimental and Clinical Research Center (ECRC), Charité - University Medicine Berlin and Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Sandra Beer-Hammer
- Department of Pharmacology and Experimental Therapy, Institute of Experimental and Clinical Pharmacology and Toxicology, Eberhard Karls University Hospitals and Clinics, and Interfaculty Center of Pharmacogenomics and Drug Research (ICePhA), Tübingen, Germany
| | - Gabriele M König
- Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
| | - Evi Kostenis
- Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
| | - Bernd Nürnberg
- Department of Pharmacology and Experimental Therapy, Institute of Experimental and Clinical Pharmacology and Toxicology, Eberhard Karls University Hospitals and Clinics, and Interfaculty Center of Pharmacogenomics and Drug Research (ICePhA), Tübingen, Germany
| | - Maik Gollasch
- Experimental and Clinical Research Center (ECRC), Charité - University Medicine Berlin and Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,Medical Clinic for Nephrology and Internal Intensive Care, Charité Campus Virchow Klinikum, Berlin, Germany
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Grasselli F, Bussolati S, Ramoni R, Grolli S, Basini G. Simazine, a triazine herbicide, disrupts swine granulosa cell functions. Anim Reprod 2018; 15:3-11. [PMID: 33365088 PMCID: PMC7746213 DOI: 10.21451/1984-3143-2017-ar960] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The triazine herbicide simazine is a pesticide commonly detected in surface and ground waters,
although banned in most European countries since 2004. Concerns for humans and animal health
result from its potential endocrine disrupting action, that can lead to reproductive disorders.
The present in vitro study was undertaken to study simazine effects on
swine granulosa cell function, namely cell viability, proliferation, steroidogenesis
and NO production. Moreover, the ability of this substance to interfere with the angiogenetic
process, a crucial event in reproductive function, was taken into account. Our data document
that simazine treatment, at 0.1 or 10 μM concentration levels, stimulates granulosa
cell proliferation and viability and impairs steroidogenesis, increasing in particular
progesterone production. In addition, the in vitro angiogenesis bioassay
revealed a significant simazine stimulatory effect on immortalized porcine Aortic Endothelial
Cell proliferation. Collectively, these results show that simazine can display disruptive
effects on ovarian cell functional parameters, possibly resulting in reproductive dysfunction.
This hypothesis is also supported by the observed pro-angiogenetic properties of this herbicide,
as already suggested for different endocrine disruptors.
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Pogrmic-Majkic K, Samardzija D, Stojkov-Mimic N, Vukosavljevic J, Trninic-Pjevic A, Kopitovic V, Andric N. Atrazine suppresses FSH-induced steroidogenesis and LH-dependent expression of ovulatory genes through PDE-cAMP signaling pathway in human cumulus granulosa cells. Mol Cell Endocrinol 2018; 461:79-88. [PMID: 28859905 DOI: 10.1016/j.mce.2017.08.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 07/13/2017] [Accepted: 08/28/2017] [Indexed: 01/12/2023]
Abstract
Atrazine (ATR) alters female reproductive functions in different animal species. Here, we analyzed whether ATR disturbs steroidogenic and ovulatory processes in hormone-stimulated human cumulus granulosa cells and mechanism of its action. Results showed that treatment of human cumulus granulosa cells with 20 μM ATR for 48 h resulted in lower FSH-stimulated estradiol and progesterone production. ATR reduced mRNA levels of aromatase (CYP19A1), steroidogenic acute regulatory protein (STAR) and luteinizing hormone/choriogonadotropin receptor (LHCGR). Addition of hCG 48 h after FSH and ATR treatment did not trigger maximal expression of the ovulatory genes amphiregulin (AREG) and epiregulin (EREG). Mechanistic experiments showed that ATR activated cPDE and decreased cAMP level. Addition of total PDE and specific PDE4 inhibitors, IBMX and rolipram, prevented ATR's action on CYP19A1 and STAR mRNA expression in FSH-stimulated human cumulus granulosa cells. This study suggests that ATR alters steroidogenesis and ovulatory process in human cumulus granulosa cells jeopardizing female reproduction.
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Affiliation(s)
| | - Dragana Samardzija
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Serbia
| | - Natasa Stojkov-Mimic
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Serbia
| | - Jelena Vukosavljevic
- Clinic for Gynecology and Obstetrics, Clinical Center of Vojvodina, Novi Sad, Serbia
| | | | - Vesna Kopitovic
- Clinic for Gynecology and Obstetrics, Clinical Center of Vojvodina, Novi Sad, Serbia
| | - Nebojsa Andric
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Serbia
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Li X, Yu J, Li J, Wu Y, Li B. Dopaminergic Dysfunction in Mammalian Dopamine Neurons Induced by Simazine Neurotoxicity. Int J Mol Sci 2017; 18:ijms18112404. [PMID: 29137186 PMCID: PMC5713372 DOI: 10.3390/ijms18112404] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 09/29/2017] [Accepted: 11/03/2017] [Indexed: 01/14/2023] Open
Abstract
Many studies have shown that the pollutant simazine (6-chloro-N,N′-diethyl-1,3,5-triazine-2,4-diamine), which has been overused, inhibits the proliferation of mammalian dopaminergic cells, and affects the developmental differentiation of mammalian dopaminergic neurons. However, few studies have shown the effects of simazine on dopaminergic metabolism in these cells. Therefore, we aim to examine the metabolic effects of simazine exposure in mouse dopaminergic progenitor neurons (MN9D) at different exposure times. The cells were treated with simazine at 0, 150, 300 and 600 µM for 12, 24 and 48 h, respectively. The content of dopamine in these cells was then examined using the enzyme-linked immunosorbent assay (ELISA) kit. Real-time quantitative polymerase chain reaction (PCR) and western blotting were performed to analyze the mRNA and protein expression of aromatic amino acid decarboxylase (AADC), tyrosine hydroxylase (DYT5b), dopamine transporter (DAT), monoamine vesicular transporter 2 (VMAT2), monoamine oxidase (MAO) and catechol-O-methyl transferase (COMT). The results showed that simazine influenced the metabolism of dopamine and led to a decrease in dopamine level in these cells which may eventually lead to neurological disorders of the dopaminergic system.
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Affiliation(s)
- Xueting Li
- Department of Toxicology, College of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Jia Yu
- Department of Environmental Health, College of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Jianan Li
- Department of Toxicology, College of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Yanping Wu
- Department of Toxicology, College of Public Health, Harbin Medical University, Harbin 150081, China.
| | - Baixiang Li
- Department of Toxicology, College of Public Health, Harbin Medical University, Harbin 150081, China.
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