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Schönrath I, Schmidtkunz C, Ebert KE, Küpper K, Brüning T, Koch HM, Leng G. Human urinary excretion kinetics of the antimycotic climbazole: Biomonitoring of two new metabolites after oral and dermal dosage. Toxicol Lett 2024; 399:25-33. [PMID: 38936562 DOI: 10.1016/j.toxlet.2024.06.011] [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: 02/20/2024] [Revised: 05/22/2024] [Accepted: 06/21/2024] [Indexed: 06/29/2024]
Abstract
Climbazole is an antimycotic compound used in cosmetic products as a preservative or as an active ingredient in anti-dandruff (AD) formulations. In this study we provide human toxicokinetic data on climbazole. Using our previously published analytical method, we investigated the urinary excretion of two climbazole metabolites, (OH)2-climbazole and cx-OH-climbazole, for 48 h after oral ingestion (n = 5, 49-77 µg/kg bw) and for 72 h after dermal application of either a climbazole-containing rinse-off AD shampoo or a leave-on hair tonic (n = 2×3). In total, 23.9 % (18.0-33.4 %) of the oral dose were excreted as the two abovementioned metabolites over 48 h. In one volunteer, who used an over-the-counter phytopharmaceutical, metabolite excretion was about three times lower and we found influences on diastereoselectivity of (OH)2-climbazole formation using a modified analytical method. After dermal application, urinary concentration maxima occurred considerably later than after oral intake. The two different dermal exposure scenarios also revealed a relevance of exposure duration and product formulation on the systemic availability of climbazole. Back-calculated oral-dose-equivalent intakes from the dermal exposures showed a maximum climbazole intake of 18.5 µg/kg bw/d after hair tonic use, or 6.6 µg/kg bw/d after AD shampoo application.
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Affiliation(s)
- Isabell Schönrath
- Currenta GmbH & Co. OHG, Institute of Biomonitoring, Chempark Gebäude Q 18, Leverkusen D-51368, Germany.
| | - Christoph Schmidtkunz
- Currenta GmbH & Co. OHG, Institute of Biomonitoring, Chempark Gebäude Q 18, Leverkusen D-51368, Germany
| | - Katharina E Ebert
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, Bochum D-44789, Germany
| | - Katja Küpper
- Currenta GmbH & Co. OHG, Institute of Biomonitoring, Chempark Gebäude Q 18, Leverkusen D-51368, Germany
| | - Thomas Brüning
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, Bochum D-44789, Germany
| | - Holger M Koch
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, Bochum D-44789, Germany
| | - Gabriele Leng
- Currenta GmbH & Co. OHG, Institute of Biomonitoring, Chempark Gebäude Q 18, Leverkusen D-51368, Germany
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2
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Yahavi C, Pandey A, Bhateria M, Warkad BV, Trivedi RK, Singh SP. Identification of potential chemical biomarkers of hexaconazole using in vitro metabolite profiling in rat and human liver microsomes and in vivo confirmation through urinary excretion study in rats. CHEMOSPHERE 2024; 358:142123. [PMID: 38677618 DOI: 10.1016/j.chemosphere.2024.142123] [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: 12/13/2023] [Revised: 04/19/2024] [Accepted: 04/21/2024] [Indexed: 04/29/2024]
Abstract
Hexaconazole (HEX) is an azole fungicide widely used in agricultural practices across various countries and numerous studies have reported the toxic effects of HEX, such as endocrine disruption, immunotoxicity, neurotoxicity and carcinogenicity. Despite its widespread agricultural use and toxic effects, the metabolism of HEX is not completely understood, and information on urinary elimination of HEX or its metabolites is limited. Therefore, in the present study, we aimed to identify HEX metabolites in rat and human liver microsomes followed by their in vivo confirmation using a urinary excretion study in rats to identify potential candidate for exposure biomarkers for human biomonitoring studies. From the in vitro assay, a total of 12 metabolites were observed, where the single oxidation metabolites (M5 and M6) were the most abundant metabolites in both rat and human liver microsomes. The triple oxidation followed by dehydration metabolite, M8 (which could also be hexaconazole acid or hydroxy keto-hexaconazole), and the double oxidation metabolite (M9) were the major metabolites found in rat urine and were detectable in rat urine longer than the parent. These metabolites increased with decreasing concentrations of HEX in the rat urine samples. Therefore, metabolites M8, M9 and M5 could be pursued further as potential biomarkers for assessing and monitoring human exposure to HEX.
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Affiliation(s)
- C Yahavi
- Toxicokinetics Laboratory/ASSIST and REACT Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Lucknow, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Anushka Pandey
- Toxicokinetics Laboratory/ASSIST and REACT Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Lucknow, India
| | - Manisha Bhateria
- Toxicokinetics Laboratory/ASSIST and REACT Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Lucknow, India
| | | | - Ravi Kumar Trivedi
- Zydus Research Center, Zydus Life Sciences Limited, Changodar, Ahmedabad, India
| | - Sheelendra Pratap Singh
- Toxicokinetics Laboratory/ASSIST and REACT Division, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Lucknow, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.
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3
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Lini RS, Scanferla DTP, de Oliveira NG, Aguera RG, Santos TDS, Teixeira JJV, Kaneshima AMDS, Mossini SAG. Fungicides as a risk factor for the development of neurological diseases and disorders in humans: a systematic review. Crit Rev Toxicol 2024; 54:35-54. [PMID: 38288970 DOI: 10.1080/10408444.2024.2303481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 12/28/2023] [Indexed: 02/16/2024]
Abstract
Although studies show that pesticides, especially insecticides, may be toxic to humans, publications on the neurological effects of fungicides are scarce. As fungicides are used widely in Brazil, it is necessary to gather evidence to support actions aimed at safely using of these chemicals. We investigated through a systematic review of publications on the use of fungicides and consequences of exposure related to nervous system diseases or neurological disorders in humans. The protocol review was registered on PROSPERO and followed the guidelines of the PRISMA-Statement. As far as it is known, there is no apparent systematic review in the literature on this topic. The search was comprised of the following databases: PubMed; Web of Science; Scopus and EMBASE, using groups of Mesh terms and strategies specific to each database. Thirteen articles were selected for this review. Regarding the substances analyzed in the studies, some reported the use of fungicides in general, without separating them by type, while others summarized the categories of all pesticides by their function (insecticides, herbicides, fungicides, etc.) or chemical class (dithiocarbamate, dicarboximide, inorganic, etc.). However, most of the articles referred to fungicides that contain the metal manganese (Mn) in their composition. As for neurological disorders, articles addressed Parkinson's disease (PD), neurodevelopmental outcomes, extrapyramidal syndrome resembling PD, cognitive disorders, depression, neural tube defects, motor neurone disease, and amyotrophic lateral sclerosis. Most investigations pointed to exposure to fungicides, mainly maneb and mancozeb, leading to the development of at least one neurological disease, which suggests the need for further multicentric clinical trials and prospective studies for greater clarity of the research problem.
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Affiliation(s)
- Renata Sano Lini
- Department of Health Basic Sciences, Postgraduate Program in Biosciences and Physiopathology, State University of Maringá, Maringa, Brazil
| | - Deborah Thais Palma Scanferla
- Department of Health Basic Sciences, Postgraduate Program in Biosciences and Physiopathology, State University of Maringá, Maringa, Brazil
| | - Nadya Garcia de Oliveira
- Department of Health Basic Sciences, Postgraduate Program in Biosciences and Physiopathology, State University of Maringá, Maringa, Brazil
| | - Raul Gomes Aguera
- Department of Health Basic Sciences, Postgraduate Program in Biosciences and Physiopathology, State University of Maringá, Maringa, Brazil
| | - Thais da Silva Santos
- Postgraduate Program in Biosciences and Physiopathology, State University of Maringa, Maringa, Brazil
| | - Jorge Juarez Vieira Teixeira
- Department of Clinical Analysis and Biomedicine, Postgraduate Program in Biosciences and Physiopathology, State University of Maringa, Maringa, Brazil
| | | | - Simone Aparecida Galerani Mossini
- Department of Clinical Analysis and Biomedicine, Postgraduate Program in Biosciences and Physiopathology, State University of Maringa, Maringa, Brazil
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4
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Morgan AM, Ogaly HA, Kamel S, Rashad MM, Hassanen EI, Ibrahim MA, Galal MK, Yassin AM, Dulmani SAA, Al-Zahrani FA, Hussien AM. Protective effects of N-acetyl-l-cysteine against penconazole-triggered hepatorenal toxicity in adult rats. J Vet Res 2023; 67:459-469. [PMID: 37786839 PMCID: PMC10541664 DOI: 10.2478/jvetres-2023-0039] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 06/26/2023] [Indexed: 10/04/2023] Open
Abstract
Introduction Penconazole (PEN) is a widely applied triazole fungicide. This study sought to define the efficacy of N-acetyl-l-cysteine (NAC) in mitigating PEN-triggered hepatorenal toxicity in rats. Material and Methods Twenty-eight adult male albino Wistar rats were assigned to four groups: a normal control (NC), a PEN group, a NAC group and a PEN+NAC group. Administration of PEN (50 mg/kg body weight (b.w.) every 2 days) and NAC (150 mg/kg b.w., daily) took place via oral gavage for 10 days. Results Effective amelioration by NAC of PEN-induced liver and kidney dysfunction was indicated by a significant reduction in the circulating liver and kidney markers (aspartate aminotransferase, alanine aminotransferase, urea and creatinine). Attenuation of PEN-induced oxidative stress and lipid peroxidation in liver and kidney tissues was evident in a significant reduction in malondialdehyde and enhanced total antioxidant capacity. Moreover, NAC significantly reduced the histopathological alterations and the expression of tumour necrosis factor α in liver and kidney tissue. Furthermore, NAC maintained the messenger RNA levels of nuclear factor erythroid 2-related factor 2 (Nrf2), haem oxygenase 1, and Kelch-like erythroid cell-derived protein 1 and prevented nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) protein upregulation caused by PEN. Conclusion N-acetyl-1-cysteine protected against PEN-induced hepatorenal oxidative damage and inflammatory response via activation of Nrf2 and inhibition of NF-κB pathways.
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Affiliation(s)
| | - Hanan A. Ogaly
- Chemistry Department, Faculty of Science, King Khalid University, Abha 62421, Abha High City, Saudi Arabia
| | - Shaimaa Kamel
- Biochemistry and Molecular Biology Department, 12211Giza, Egypt
| | - Maha M. Rashad
- Biochemistry and Molecular Biology Department, 12211Giza, Egypt
| | - Eman I. Hassanen
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, 12211Giza, Egypt
| | | | - Mona K. Galal
- Biochemistry and Molecular Biology Department, 12211Giza, Egypt
| | - Aya M. Yassin
- Biochemistry and Molecular Biology Department, 12211Giza, Egypt
| | - Sharah A. Al Dulmani
- Chemistry Department, Faculty of Science, King Khalid University, Abha 62421, Abha High City, Saudi Arabia
| | - Fatimah A.M. Al-Zahrani
- Chemistry Department, Faculty of Science, King Khalid University, Abha 62421, Abha High City, Saudi Arabia
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5
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Lotfi M, Bahram M, Najafi Moghadam P. The study of the removal of penconazole fungicide from surface water using carboxymethyl tragacanth-based hydrogel grafted with poly (acrylic acid-co-acrylamide). Sci Rep 2023; 13:13569. [PMID: 37604865 PMCID: PMC10442386 DOI: 10.1038/s41598-023-40862-7] [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: 05/08/2023] [Accepted: 08/17/2023] [Indexed: 08/23/2023] Open
Abstract
In this study, a polymeric adsorbent based on carboxymethyl tragacanth (CMT) grafted by poly acrylic acid-co-acrylamide (AAc-co-AAm) synthesized by radical polymerization for the first time was used to remove the fungicide penconazole (PEN) or Topas 20% from surface water. The parameters of solution pH, adsorption isotherm, and adsorption kinetics of PEN were studied by the synthetic adsorbent. The surface morphology and functional groups of CMT-g-poly (AAc-co-AAm) were confirmed by XRD, SEM and FT-IR techniques. Adsorption of PEN on CMT-g-poly (AAc-co-AAm) follows the Freundlich and pseudo-second-order models. The significant maximum adsorption capacity of the synthesized polymer was found to be 196.08 mg/g. The synthetic adsorbent had good reproducibility in PEN removal for up to 5 cycles. CMT-g-poly (AAc-co-AAm) is a cost-effective and non-toxic adsorbent for the decontamination of surface water from pesticides.
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Affiliation(s)
- Magsoud Lotfi
- Department of Analytical Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran
| | - Morteza Bahram
- Department of Analytical Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran.
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Chambers RK, Weaver JD, Kim J, Hoar JL, Krska SW, White MC. A preparative small-molecule mimic of liver CYP450 enzymes in the aliphatic C-H oxidation of carbocyclic N-heterocycles. Proc Natl Acad Sci U S A 2023; 120:e2300315120. [PMID: 37428920 PMCID: PMC10629554 DOI: 10.1073/pnas.2300315120] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 05/15/2023] [Indexed: 07/12/2023] Open
Abstract
An emerging trend in small-molecule pharmaceuticals, generally composed of nitrogen heterocycles (N-heterocycles), is the incorporation of aliphatic fragments. Derivatization of the aliphatic fragments to improve drug properties or identify metabolites often requires lengthy de novo syntheses. Cytochrome P450 (CYP450) enzymes are capable of direct site- and chemo-selective oxidation of a broad range of substrates but are not preparative. A chemoinformatic analysis underscored limited structural diversity of N-heterocyclic substrates oxidized using chemical methods relative to pharmaceutical chemical space. Here, we describe a preparative chemical method for direct aliphatic oxidation that tolerates a wide range of nitrogen functionality (chemoselective) and matches the site of oxidation (site-selective) of liver CYP450 enzymes. Commercial small-molecule catalyst Mn(CF3-PDP) selectively effects direct methylene oxidation in compounds bearing 25 distinct heterocycles including 14 out of 27 of the most frequent N-heterocycles found in U.S. Food and Drug Administration (FDA)-approved drugs. Mn(CF3-PDP) oxidations of carbocyclic bioisostere drug candidates (for example, HCV NS5B and COX-2 inhibitors including valdecoxib and celecoxib derivatives) and precursors of antipsychotic drugs blonanserin, buspirone, and tiospirone and the fungicide penconazole are demonstrated to match the major site of aliphatic metabolism obtained with liver microsomes. Oxidations are demonstrated at low Mn(CF3-PDP) loadings (2.5 to 5 mol%) on gram scales of substrate to furnish preparative amounts of oxidized products. A chemoinformatic analysis supports that Mn(CF3-PDP) significantly expands the pharmaceutical chemical space accessible to small-molecule C-H oxidation catalysis.
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Affiliation(s)
- Rachel K. Chambers
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, IL61801
| | - Jacob D. Weaver
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, IL61801
| | - Jinho Kim
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, IL61801
| | - Jason L. Hoar
- Department of Discovery Chemistry, Merck & Co., Inc., Rahway, NJ07065
| | - Shane W. Krska
- Department of Discovery Chemistry, Merck & Co., Inc., Rahway, NJ07065
| | - M. Christina White
- Department of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, IL61801
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7
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Cui K, Wu X, Zhang Y, Cao J, Wei D, Xu J, Dong F, Liu X, Zheng Y. Cumulative risk assessment of dietary exposure to triazole fungicides from 13 daily-consumed foods in China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 286:117550. [PMID: 34126511 DOI: 10.1016/j.envpol.2021.117550] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 06/04/2021] [Accepted: 06/05/2021] [Indexed: 06/12/2023]
Abstract
The agroeconomic benefits of the routine use of triazole fungicides on crops have been evident for more than 40 years. However, increasing evidence shows that residues of triazoles are ubiquitous in various foods and thus could pose a potential health risk to humans. We analyzed 3406 samples of 13 food commodities that were collected from markets in 9 regions across China, and assessed the health risk of both chronic and acute exposure to the triazoles for Chinese children (1-6 years old) and the general population. Among all samples, 55.52% had triazoles in concentrations of 0.10-803.30 μg/kg, and 29.77% of samples contained a combination of 2-7 triazoles. Tebuconazole and difenoconazole were the most commonly found triazoles in the foods, being detected in 33.44% and 30.45% of samples, respectively. Chronic and acute cumulative risk assessment for total triazoles based on a relative potency factor method revealed that exposure to triazoles from these particular commodities was below the levels that might pose a health risk (chronic hazard index range, 5.90×10-7 to 1.83×10-3; acute hazard index range, 7.77×10-5 to 0.39, below 1). Notably, dietary exposure risk for children was greater than that for the general population-particularly for the acute intake of mandarin, grape, and cucumber (acute hazard index values of 0.35-0.39). Despite the low health risk, the potential hazards of exposure to triazoles should raise public concern owing to their ubiquitous presence in common foods and potential cumulative effects.
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Affiliation(s)
- Kai Cui
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Control of Biological Hazard Factors (Plant Origin) for Agricultural product Quality and Safety, Ministry of Agriculture, Beijing, 100193, People's Republic of China
| | - Xiaohu Wu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Control of Biological Hazard Factors (Plant Origin) for Agricultural product Quality and Safety, Ministry of Agriculture, Beijing, 100193, People's Republic of China.
| | - Ying Zhang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Control of Biological Hazard Factors (Plant Origin) for Agricultural product Quality and Safety, Ministry of Agriculture, Beijing, 100193, People's Republic of China
| | - Junli Cao
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Control of Biological Hazard Factors (Plant Origin) for Agricultural product Quality and Safety, Ministry of Agriculture, Beijing, 100193, People's Republic of China
| | - Dongmei Wei
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Control of Biological Hazard Factors (Plant Origin) for Agricultural product Quality and Safety, Ministry of Agriculture, Beijing, 100193, People's Republic of China
| | - Jun Xu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Control of Biological Hazard Factors (Plant Origin) for Agricultural product Quality and Safety, Ministry of Agriculture, Beijing, 100193, People's Republic of China
| | - Fengshou Dong
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Control of Biological Hazard Factors (Plant Origin) for Agricultural product Quality and Safety, Ministry of Agriculture, Beijing, 100193, People's Republic of China
| | - Xingang Liu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Control of Biological Hazard Factors (Plant Origin) for Agricultural product Quality and Safety, Ministry of Agriculture, Beijing, 100193, People's Republic of China
| | - Yongquan Zheng
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, State Key Laboratory for Biology of Plant Diseases and Insect Pests, Key Laboratory of Control of Biological Hazard Factors (Plant Origin) for Agricultural product Quality and Safety, Ministry of Agriculture, Beijing, 100193, People's Republic of China
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8
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Jia M, Teng M, Tian S, Yan J, Meng Z, Yan S, Li R, Zhou Z, Zhu W. Effects of penconazole enantiomers exposure on hormonal disruption in zebrafish Danio rerio (Hamilton, 1822). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:43476-43482. [PMID: 33834344 DOI: 10.1007/s11356-021-13446-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
PEN is a widely used triazole fungicide, usually used to control grape white rot. In the process of agricultural use, PEN will be scattered to the soil and water environment, which brings certain environmental safety risks. In this study, we used a 200-μg/L solution of Rac-PEN, (+)-PEN, and (-)-PEN to perform a 28-day exposure test on zebrafish. The results showed that long-term low-dose PEN exposure did not significantly change the growth factor K and the number of spawning of zebrafish. However, the content of four important hormones vitellogenin, 17β-estradiol, testosterone, and 11-ketotestosterone in zebrafish has changed significantly. Furthermore, we measured the expression of hypothalamus-pituitary-gonads-liver (HPGL) axis-related genes, and the results showed that the expressions of related genes in the brain, gonads, and liver all changed significantly. Combining the above results, we can conclude that PEN has obvious endocrine disrupting effect on zebrafish, and has gender-specific endocrine effects. Meanwhile, Rac-PEN and (+)-PEN had stronger effects on the endocrine system of zebrafish than (-)-PEN.
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Affiliation(s)
- Ming Jia
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Miaomiao Teng
- College of Sciences, China Agricultural University, Beijing, China
| | - Sinuo Tian
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Jin Yan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Zhiyuan Meng
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Sen Yan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Ruisheng Li
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Zhiqiang Zhou
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Wentao Zhu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China.
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9
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Saito M, Kawamata Y, Meanwell M, Navratil R, Chiodi D, Carlson E, Hu P, Chen L, Udyavara S, Kingston C, Tanwar M, Tyagi S, McKillican BP, Gichinga MG, Schmidt MA, Eastgate MD, Lamberto M, He C, Tang T, Malapit CA, Sigman MS, Minteer SD, Neurock M, Baran PS. N-Ammonium Ylide Mediators for Electrochemical C-H Oxidation. J Am Chem Soc 2021; 143:7859-7867. [PMID: 33983721 DOI: 10.1021/jacs.1c03780] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The site-specific oxidation of strong C(sp3)-H bonds is of uncontested utility in organic synthesis. From simplifying access to metabolites and late-stage diversification of lead compounds to truncating retrosynthetic plans, there is a growing need for new reagents and methods for achieving such a transformation in both academic and industrial circles. One main drawback of current chemical reagents is the lack of diversity with regard to structure and reactivity that prevents a combinatorial approach for rapid screening to be employed. In that regard, directed evolution still holds the greatest promise for achieving complex C-H oxidations in a variety of complex settings. Herein we present a rationally designed platform that provides a step toward this challenge using N-ammonium ylides as electrochemically driven oxidants for site-specific, chemoselective C(sp3)-H oxidation. By taking a first-principles approach guided by computation, these new mediators were identified and rapidly expanded into a library using ubiquitous building blocks and trivial synthesis techniques. The ylide-based approach to C-H oxidation exhibits tunable selectivity that is often exclusive to this class of oxidants and can be applied to real-world problems in the agricultural and pharmaceutical sectors.
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Affiliation(s)
- Masato Saito
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Yu Kawamata
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Michael Meanwell
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Rafael Navratil
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Debora Chiodi
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ethan Carlson
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Pengfei Hu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Longrui Chen
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Sagar Udyavara
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Cian Kingston
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Mayank Tanwar
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Sameer Tyagi
- Product Metabolism and Analytical Science, Syngenta Crop Protection, 410 Swing Road, Greensboro, North Carolina 27409, United States
| | - Bruce P McKillican
- Product Metabolism and Analytical Science, Syngenta Crop Protection, 410 Swing Road, Greensboro, North Carolina 27409, United States
| | - Moses G Gichinga
- Product Metabolism and Analytical Science, Syngenta Crop Protection, 410 Swing Road, Greensboro, North Carolina 27409, United States
| | - Michael A Schmidt
- Chemical Process Development, Bristol Myers Squibb, New Brunswick, New Jersey 08903, United States
| | - Martin D Eastgate
- Chemical Process Development, Bristol Myers Squibb, New Brunswick, New Jersey 08903, United States
| | - Massimiliano Lamberto
- Department of Chemistry & Physics, Monmouth University, West Long Branch, New Jersey 07740, United States
| | - Chi He
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Tianhua Tang
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Christian A Malapit
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Matthew S Sigman
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Shelley D Minteer
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Matthew Neurock
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Phil S Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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10
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Li R, Meng Z, Sun W, Wu R, Jia M, Yan S, Tian S, Zhu W, Zhou Z. Bioaccumulation and toxic effects of penconazole in earthworms (Eisenia fetida) following soil exposure. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:38056-38063. [PMID: 32621186 DOI: 10.1007/s11356-020-09815-9] [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: 04/10/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
As an agricultural fungicide, penconazole (PEN) is widely used and has adverse effects on various organisms. In order to evaluate the ecological safety risks of PEN, the bioaccumulation and toxic effects of PEN in earthworms were studied. Specifically, the results show that the biota-sediment accumulation factor (BSAF) of PEN in earthworms reaches its maximum within 1 day, and then decreases slowly. It reached its lowest value after 14 days of PEN exposure and then rose again. In addition, oxidative stress and metabolic disorder of the earthworm with PEN exposure were assessed. After PEN exposure, the related indicators of oxidative stress involved in the activities of SOD and CAT and the contents of GSH and MDA all changed significantly in earthworms. Moreover, metabolomics analysis of earthworms showed disturbed metabolic profiles following PEN exposure. Respectively, PEN exposure significantly altered the relative abundances of 14 metabolites in earthworms. In general, exposure to PEN caused oxidative stress and metabolic profile disorders of earthworms. The results of this study will be helpful for further evaluation of soil ecological security of PEN.
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Affiliation(s)
- Ruisheng Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, People's Republic of China
| | - Zhiyuan Meng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, People's Republic of China
| | - Wei Sun
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, People's Republic of China
| | - Ruoyue Wu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, People's Republic of China
| | - Ming Jia
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, People's Republic of China
| | - Sen Yan
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, People's Republic of China
| | - Sinuo Tian
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, People's Republic of China
| | - Wentao Zhu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, People's Republic of China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, People's Republic of China.
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11
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Alkan Uçkun A, Barım Öz Ö. Acute exposure to the fungicide penconazole affects some biochemical parameters in the crayfish (Astacus leptodactylus Eschscholtz, 1823). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:35626-35637. [PMID: 32601870 DOI: 10.1007/s11356-020-09595-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
Penconazole is one of the most widely used fungicides all over the world, and since it spreads to large environments, its toxic effects on non-target organisms are of great concern. The toxic effects of penconazole on crayfish (Astacus leptodactylus), which is a bioindicator in freshwater ecosystems and consumed economically, are not known. Therefore, in this study, the purpose was to contribute to the literature on the potential harmful effects of penconazole on a non-target species, Astacus leptodactylus. For this aim, the acute toxicity (96 h) of penconazole was examined. The 96-h LC50 value of penconazole was detected as 18.7 mg L-1. Four concentrations of penconazole (18.7 mg L-1, 9.35 mg L-1, 4.68 mg L-1, 2.34 mg L-1) were applied to crayfish for 96 h. The results showed that penconazole had destructive effects on esterase mechanisms by inhibiting acetylcholinesterase (AChE) and carboxylesterase (CaE) activities. Significant increases were observed in all antioxidant parameters (superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione reductase (GR), glutathione S-transferase (GST), reduced glutathione (GSH), malondialdehyde (MDA)) in all doses except the lowest concentration (2.34 mg L-1). All adenosine triphosphatase (ATPase) activities (Na+/K+-ATPase, Mg2+-ATPase, Ca2+-ATPase, total ATPase) had significant dose-related inhibition in both gill and muscle tissues. In summary, our findings show that acute penconazole administration to crayfish causes significant toxic effects on esterase, antioxidative parameters, and metabolic enzymes.
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Affiliation(s)
- Aysel Alkan Uçkun
- Department of Environmental Engineering, Faculty of Engineering, Adıyaman University, Altınşehir neighborhood, Ataturk Boulevard, No. 1, Central Campus, 02040, Adıyaman, Turkey.
| | - Özden Barım Öz
- Department of Physiology, Faculty of Aquaculture, Fırat University, Elazığ, Turkey
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12
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Liu H, Li P, Wang P, Liu D, Zhou Z. Toxicity risk assessment of pyriproxyfen and metabolites in the rat liver: A vitro study. JOURNAL OF HAZARDOUS MATERIALS 2020; 389:121835. [PMID: 31843398 DOI: 10.1016/j.jhazmat.2019.121835] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/09/2019] [Accepted: 12/04/2019] [Indexed: 06/10/2023]
Abstract
Pyriproxyfen (PYR) is a type of aromatic juvenile hormone analog and a hygienic insecticide used in agriculture to control insect species. Therefore, assessing the metabolic behavior and toxic effects of PYR in mammals is the best means of evaluating its risks to human health. Previous studies have reported conflicting results regarding the toxicity risks of PYR and its metabolites in rat hepatocytes. We used ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) to perform a chiral analysis of PYR and its metabolites investigating the enantioselective metabolism of PYR in rat liver microsomes. Our results concluded that the recoveries of PYR, metabolites A and B ranged from 81.13%-111.54 %, with RSD values of 0.01 %-6.52 %. The method limits of detection (LODs) and limits of quantification (LOQs) for PYR, metabolites A and B were in accordance with the analysis requirements. Previous studies have demonstrated the enantioselective metabolism of PYR and the generation of metabolites. Measurements of cell proliferation toxicity to rat hepatocytes, apoptosis and DNA damage induced by PYR and its metabolites in rat hepatocytes indicated that the metabolites reflected higher toxicity potential than PYR in rat hepatocytes. More studies about the molecular mechanism of PYR-induced toxicity are urgently needed in future work.
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Affiliation(s)
- Hui Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing 100193, China
| | - Peize Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing 100193, China
| | - Peng Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing 100193, China
| | - Donghui Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing 100193, China.
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing 100193, China
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13
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Meng Z, Liu L, Xi Y, Jia M, Yan S, Tian S, Sun W, Zhu W, Li X, Zhou Z. Different effects of exposure to penconazole and its enantiomers on hepatic glycolipid metabolism of male mice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113555. [PMID: 31733957 DOI: 10.1016/j.envpol.2019.113555] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
(±) - PEN is a chiral fungicide widely used to control powdery mildew in agriculture. Currently, only a few studies have investigated the toxic effects of (±) - penconazole ((±) - PEN) on non-target organisms, and whether (±) - PEN from the enantiomeric level have toxic effects remains unclear. In this study, we systematically evaluated the effects of exposure to (±) - PEN, (+) - PEN and (-) - PEN on liver function in mice. Biochemical and histopathological analyses showed that exposure to (±) - PEN and (-) - PEN led to significant liver damage and inflammation. However, exposure to (+) - PEN treatment did not cause no adverse effects on liver function and inflammation. 1H-NMR-based metabolomics revealed that exposure to (±) - PEN, (+) - PEN and (-) - PEN led to the animals developing liver metabolic disorder that was caused by changes in glycolipid metabolism. Quantitative analysis of genes regulating glycolipid metabolism revealed that expression of gluconeogenesis and glycolytic pathway genes were altered in individuals exposed to (±) - PEN, (+) - PEN and (-) - PEN. We also found that (±) - PEN, (+) - PEN and (-) - PEN have different effects on lipid metabolism of the liver. Exposure to (±) - PEN and (-) - PEN resulted in significant accumulation of lipids by regulating fatty acid synthesis, triglyceride synthesis, and fatty acid β oxidation pathways. In summary, we found different toxicological effects in individuals exposed to (±) - PEN, (+) - PEN and (-) - PEN. The results of this study are important for assessing the potential health risks of (±) - PEN.
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Affiliation(s)
- Zhiyuan Meng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Li Liu
- School of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Yexun Xi
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Ming Jia
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Sen Yan
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Sinuo Tian
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Wei Sun
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Wentao Zhu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Xuefeng Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Beijing 100193, China.
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14
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Polledri E, Mercadante R, Nijssen R, Consonni D, Mol H, Fustinoni S. Hair as a matrix to evaluate cumulative and aggregate exposure to pesticides in winegrowers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 687:808-816. [PMID: 31412484 DOI: 10.1016/j.scitotenv.2019.06.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/27/2019] [Accepted: 06/04/2019] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Vineyard is a crop where a large number of pesticides are applied; exposure to pesticides may occur in farmers and the general population living close to the treated area. This work aimed to investigate hair as a matrix for the assessment of cumulative and aggregate exposure to pesticides in potentially exposed individuals. METHODS Twenty agricultural workers (AW), 4 agricultural worker relatives (AR), and 5 research staff members (RS) were involved in the study. Hair samples were collected before and after the application season (PRE- and POST-EXP samples) to obtain 18 paired samples. Records with the name and the quantity of applied pesticides were obtained; twenty-seven pesticides were measured in hair by solvent extraction and LC-MS/MS. RESULTS During the study season, AW applied 14 different pesticides with median amount ranging from 12 to 7200 g. The most popular pesticides were dimethomorph, penconazole, cyazofamid, fenamidone and quinoxyfen, applied from 94 to 69% of AW. In AW, in PRE-EXP samples the majority of used pesticides was detectable (with detection rates from 6 to 88%), with median concentrations of few pg/mg hair; in the POST-EXP samples the frequency of detected values increased (from 25 to 100%), with median concentrations up to two orders of magnitude higher. In AR, most pesticides were quantifiable only in POST-EXP samples and with lower concentration in comparison with AW; in RS, in both PRE- and POST-EXP samples only a few pesticides were quantifiable with very low levels. In AW, a linear correlation (r = 0.682 on log-transformed data, p < 0.01) was found between the total amounts of applied pesticides during the season and their concentration in hair. CONCLUSION The study shows that the majority of assessed pesticides was incorporated into hair of AW and AR. The increased frequency of detection and level at the end of the season and the correlation between pesticide in hair and the amount of applied pesticides, reinforce the use of hair for quantitative biomonitoring of cumulative exposure to pesticides.
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Affiliation(s)
- E Polledri
- EPIGET - Epidemiology, Epigenetics, and Toxicology Lab, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico and Università degli Studi di Milano, Italy
| | - R Mercadante
- EPIGET - Epidemiology, Epigenetics, and Toxicology Lab, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico and Università degli Studi di Milano, Italy
| | - R Nijssen
- Wageningen Food Safety Research (WFSR), Part of Wageningen University & Research, Akkermaalsbos 2, 6708 WB Wageningen, the Netherlands
| | - D Consonni
- Epidemiology Unit, Dipartimento dei Servizi e di Medicina Preventiva, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - H Mol
- Wageningen Food Safety Research (WFSR), Part of Wageningen University & Research, Akkermaalsbos 2, 6708 WB Wageningen, the Netherlands
| | - S Fustinoni
- EPIGET - Epidemiology, Epigenetics, and Toxicology Lab, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico and Università degli Studi di Milano, Italy.
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15
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Mercadante R, Polledri E, Rubino FM, Mandic-Rajcevic S, Vaiani A, Colosio C, Moretto A, Fustinoni S. Assessment of penconazole exposure in winegrowers using urinary biomarkers. ENVIRONMENTAL RESEARCH 2019; 168:54-61. [PMID: 30268961 DOI: 10.1016/j.envres.2018.09.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/20/2018] [Accepted: 09/12/2018] [Indexed: 06/08/2023]
Abstract
Penconazole (PEN) is a fungicide used in agriculture. The aim of this work was to evaluate the exposure to PEN in vineyard workers focusing on urinary biomarkers. Twenty-two agricultural workers were involved in the study; they were investigated during PEN applications and re-entry work, performed for 1-4 consecutive working days, for a total of 42 mixing and applications and 12 re-entries. Potential and actual dermal exposure, including hand exposure, were measured using pads and hand washes. Urine samples were collected starting before the first application, continuing during the work shift, and ending 48 h after the last shift. The determination of PEN in dermal samples and PEN metabolites in urine was performed by liquid chromatography tandem mass spectrometry. Dermal potential body exposure and actual total exposure showed median levels ranging from 18 to 3356µg and from 21 to 111 µg, respectively. Urinary monohydroxyl-derivative PEN-OH was the most abundant metabolite; its excretion rate peaked within 24 h after the work shift. In this period, median concentrations of PEN-OH and the carboxyl-derivative PEN-COOH ranged from 15.6 to 27.6 µg/L and from 2.5 to 10.2 µg/L, respectively. The concentration of PEN-OH during the work shift, in the 24 h after and in the 25-48 h after the work shift were correlated with actual body and total dermal exposure (Pearson's r from 0.279 to 0.562). Our results suggest that PEN-OH in the 24 h post-exposure urine is a promising candidate for biomonitoring PEN exposure in agricultural workers.
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Affiliation(s)
- Rosa Mercadante
- Department of Clinical Sciences and Community Health, University of Milano, Via S. Barnaba 8, 20122 Milan, Italy
| | - Elisa Polledri
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via S. Barnaba 8, 20122 Milan, Italy
| | - Federico Maria Rubino
- Department of Health Sciences of the University of Milan, Laboratory for Analytical Toxicology and Metabolomics (LaTMA) and International Centre for Rural Health of the University Hospital San Paolo, Via di Rudini 8, Milan, Italy
| | - Stefan Mandic-Rajcevic
- Department of Health Sciences of the University of Milan, Laboratory for Analytical Toxicology and Metabolomics (LaTMA) and International Centre for Rural Health of the University Hospital San Paolo, Via di Rudini 8, Milan, Italy
| | - Andrea Vaiani
- Department of Health Sciences of the University of Milan, Laboratory for Analytical Toxicology and Metabolomics (LaTMA) and International Centre for Rural Health of the University Hospital San Paolo, Via di Rudini 8, Milan, Italy
| | - Claudio Colosio
- Department of Health Sciences of the University of Milan, Laboratory for Analytical Toxicology and Metabolomics (LaTMA) and International Centre for Rural Health of the University Hospital San Paolo, Via di Rudini 8, Milan, Italy
| | - Angelo Moretto
- Department of Biomedical and Clinical Sciences, University of Milano, and International Centre for Pesticides and Health Risks Protection (ICPS), "Luigi Sacco" Hospital, Via G.B. Grassi 74, 20157 Milano, Italy
| | - Silvia Fustinoni
- Department of Clinical Sciences and Community Health, University of Milano, Via S. Barnaba 8, 20122 Milan, Italy; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via S. Barnaba 8, 20122 Milan, Italy.
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16
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Icoglu Aksakal F, Ciltas A. Developmental toxicity of penconazole in Zebrfish (Danio rerio) embryos. CHEMOSPHERE 2018; 200:8-15. [PMID: 29471168 DOI: 10.1016/j.chemosphere.2018.02.094] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 02/14/2018] [Accepted: 02/15/2018] [Indexed: 06/08/2023]
Abstract
Penconazole is a widely used fungicide that is toxic to a variety of organisms including fish. In the present study, we investigated the developmental toxicity of penconazole on zebrafish embryos by exposing to different concentrations of penconazole (0.8, 1.6 and 2.4 mg/L) from 4-h post-fertilization (hpf). Hatching, survival, and heart rates, body length, malformation and expression of several genes were detected. The results showed that penconazole exposure induced developmental toxicity, including delayed hatching, reduced survival, and heart rate. In addition to this, exposure to penconazole caused malformations, including pericardial edema, yolk sac edema, axial malformation, tail malformation and spinal curvature. Furthermore, RT-PCR results showed that mRNA levels of antioxidant genes were down-regulated after penconazole exposure. On the other hand, mRNA levels of interleukin 1 beta and interferon in embryos were up-regulated after exposure to penconazole. In summary, our data indicated that penconazole cause embryonic development toxicity on zebrafish embryos.
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Affiliation(s)
- Feyza Icoglu Aksakal
- Department of Agricultural Biotechnology, Faculty of Agriculture, Atatürk University, 25240, Erzurum, Turkey.
| | - Abdulkadir Ciltas
- Department of Agricultural Biotechnology, Faculty of Agriculture, Atatürk University, 25240, Erzurum, Turkey
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