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Dinep-Schneider O, Appiah E, Dapper A, Patterson S, Vermulst M, Gout JF. Effects of the glyphosate-based herbicide Roundup on C. elegans and S. cerevisiae mortality, reproduction, and transcription fidelity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 356:124203. [PMID: 38830529 DOI: 10.1016/j.envpol.2024.124203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 05/16/2024] [Accepted: 05/21/2024] [Indexed: 06/05/2024]
Abstract
Glyphosate-based weed killers such as Roundup have been implicated in detrimental effects on single- and multicellular eukaryotic model organism health and longevity. However, the mode(s) of action for these effects are currently unknown. In this study, we investigate the impact of exposure to Roundup on two model organisms: Saccharomyces cerevisiae and Caenorhabditis elegans and test the hypothesis that exposure to Roundup decreases transcription fidelity. Population growth assays and motility assays were performed in order to determine the phenotypic effects of Roundup exposure. We also used Rolling-Circle Amplification RNA sequencing to quantify the impact of exposure to Roundup on transcription fidelity in these two model organisms. Our results show that exposure to the glyphosate-based herbicide Roundup increases mortality, reduces reproduction, and increases transcription error rates in C. elegans and S. cerevisiae. We suggest that these effects may be due in part to the involvement of inflammation and oxidative stress, conditions which may also contribute to increases in transcription error rates.
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Affiliation(s)
| | - Eastilan Appiah
- Department of Computer Science and Engineering, Computational Biology, Mississippi State University, Starkville MS
| | - Amy Dapper
- Department of Biology, Mississippi State University, Starkville MS
| | - Sarah Patterson
- Department of Computer Science and Engineering, Computational Biology, Mississippi State University, Starkville MS
| | - Marc Vermulst
- University of Southern California, Leonard Davis School of Gerontology, Los Angeles, CA 90089
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2
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Swanton C, Bernard E, Abbosh C, André F, Auwerx J, Balmain A, Bar-Sagi D, Bernards R, Bullman S, DeGregori J, Elliott C, Erez A, Evan G, Febbraio MA, Hidalgo A, Jamal-Hanjani M, Joyce JA, Kaiser M, Lamia K, Locasale JW, Loi S, Malanchi I, Merad M, Musgrave K, Patel KJ, Quezada S, Wargo JA, Weeraratna A, White E, Winkler F, Wood JN, Vousden KH, Hanahan D. Embracing cancer complexity: Hallmarks of systemic disease. Cell 2024; 187:1589-1616. [PMID: 38552609 DOI: 10.1016/j.cell.2024.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 01/25/2024] [Accepted: 02/08/2024] [Indexed: 04/02/2024]
Abstract
The last 50 years have witnessed extraordinary developments in understanding mechanisms of carcinogenesis, synthesized as the hallmarks of cancer. Despite this logical framework, our understanding of the molecular basis of systemic manifestations and the underlying causes of cancer-related death remains incomplete. Looking forward, elucidating how tumors interact with distant organs and how multifaceted environmental and physiological parameters impinge on tumors and their hosts will be crucial for advances in preventing and more effectively treating human cancers. In this perspective, we discuss complexities of cancer as a systemic disease, including tumor initiation and promotion, tumor micro- and immune macro-environments, aging, metabolism and obesity, cancer cachexia, circadian rhythms, nervous system interactions, tumor-related thrombosis, and the microbiome. Model systems incorporating human genetic variation will be essential to decipher the mechanistic basis of these phenomena and unravel gene-environment interactions, providing a modern synthesis of molecular oncology that is primed to prevent cancers and improve patient quality of life and cancer outcomes.
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Affiliation(s)
- Charles Swanton
- The Francis Crick Institute, London, UK; Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK.
| | - Elsa Bernard
- The Francis Crick Institute, London, UK; INSERM U981, Gustave Roussy, Villejuif, France
| | | | - Fabrice André
- INSERM U981, Gustave Roussy, Villejuif, France; Department of Medical Oncology, Gustave Roussy, Villejuif, France; Paris Saclay University, Kremlin-Bicetre, France
| | - Johan Auwerx
- Laboratory of Integrative Systems Physiology, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland
| | - Allan Balmain
- UCSF Helen Diller Family Comprehensive Cancer Center, San Francisco, CA, USA
| | | | - René Bernards
- Division of Molecular Carcinogenesis, Oncode Institute, the Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Susan Bullman
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - James DeGregori
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | - Ayelet Erez
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Gerard Evan
- The Francis Crick Institute, London, UK; Kings College London, London, UK
| | - Mark A Febbraio
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Andrés Hidalgo
- Department of Immunobiology, Yale University, New Haven, CT 06519, USA; Area of Cardiovascular Regeneration, Centro Nacional de Investigaciones Cardiovasculares, 28029 Madrid, Spain
| | - Mariam Jamal-Hanjani
- Cancer Research UK Lung Cancer Centre of Excellence, University College London Cancer Institute, London, UK
| | - Johanna A Joyce
- Department of Oncology, Ludwig Institute for Cancer Research, University of Lausanne, Lausanne, Switzerland
| | | | - Katja Lamia
- Department of Molecular Medicine, Scripps Research Institute, La Jolla, CA, USA
| | - Jason W Locasale
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC, USA; Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
| | - Sherene Loi
- Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia; The Sir Department of Medical Oncology, The University of Melbourne, Parkville, VIC, Australia
| | | | - Miriam Merad
- Department of immunology and immunotherapy, Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kathryn Musgrave
- Translational and Clinical Research Institute, Newcastle University, Newcastle, UK; Department of Haematology, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Ketan J Patel
- MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Sergio Quezada
- Cancer Immunology Unit, Research Department of Haematology, University College London Cancer Institute, London, UK
| | - Jennifer A Wargo
- Department of Surgical Oncology, Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ashani Weeraratna
- Sidney Kimmel Cancer Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Eileen White
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA; Ludwig Princeton Branch, Ludwig Institute for Cancer Research, Princeton, NJ, USA
| | - Frank Winkler
- Neurology Clinic and National Center for Tumor Diseases, University Hospital Heidelberg, Heidelberg, Germany; Clinical Cooperation Unit Neuro-oncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - John N Wood
- Molecular Nociception Group, WIBR, University College London, London, UK
| | | | - Douglas Hanahan
- Lausanne Branch, Ludwig Institute for Cancer Research, Lausanne, Switzerland; Swiss institute for Experimental Cancer Research (ISREC), EPFL, Lausanne, Switzerland; Agora Translational Cancer Research Center, Lausanne, Switzerland.
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3
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Kaur R, Choudhary D, Bali S, Bandral SS, Singh V, Ahmad MA, Rani N, Singh TG, Chandrasekaran B. Pesticides: An alarming detrimental to health and environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 915:170113. [PMID: 38232846 DOI: 10.1016/j.scitotenv.2024.170113] [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: 09/30/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/19/2024]
Abstract
Pesticides are chemical substances of natural or synthetic origin that are used to eradicate pests and insects. These are indispensable in the agricultural processes for better crop production. Pesticide use aims to promote crop yield and protect the crops from diseases and damage. Pesticides must be handled carefully and disposed of appropriately because they are dangerous to people and other species by default. Environmental pollution occurs when pesticide contamination spreads away from the intended plants. Older pesticides such as lindane and dichlorodiphenyltrichloroethane (DDT) may remain in water and soil for a longer time. These accumulate in various parts of the food chain and cause damage to the ecosystem. Biological techniques in the management of pest control such as importation, augmentation, and conservation, and the accompanying procedures are more efficient, less expensive, and ecologically sound than other ways. This review mainly focuses on the consequences on the targeted and non-targeted organisms including the health and well-being of humans by the use of pesticides and their toxicity. The side effects that occur when a pesticide's LD50 exceeds the accepted limit through oral or skin penetration due to their binding to various receptors such as estrogen receptors, GABA, EGFR, and others. These pesticide classes include carbamates, pyrethroids, organochlorides, organophosphorus, and others. The current study seeks to highlight the urgent requirement for a novel agricultural concept that includes a major reduction in the use of chemical pesticides.
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Affiliation(s)
- Rajwinder Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India.
| | - Diksha Choudhary
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Samriddhi Bali
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | | | - Varinder Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Md Altamash Ahmad
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Nidhi Rani
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
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4
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Kimbi Yaah VB, Ahmadi S, Quimbayo M J, Morales-Torres S, Ojala S. Recent technologies for glyphosate removal from aqueous environment: A critical review. ENVIRONMENTAL RESEARCH 2024; 240:117477. [PMID: 37918766 DOI: 10.1016/j.envres.2023.117477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 10/02/2023] [Accepted: 10/22/2023] [Indexed: 11/04/2023]
Abstract
The growing demand for food has led to an increase in the use of herbicides and pesticides over the years. One of the most widely used herbicides is glyphosate (GLY). It has been used extensively since 1974 for weed control and is currently classified by the World Health Organization (WHO) as a Group 2A substance, probably carcinogenic to humans. The industry and academia have some disagreements regarding GLY toxicity in humans and its effects on the environment. Even though this herbicide is not mentioned in the WHO water guidelines, some countries have decided to set maximum acceptable concentrations in tap water, while others have decided to ban its use in crop production completely. Researchers around the world have employed different technologies to remove or degrade GLY, mostly at the laboratory scale. Water treatment plants combine different technologies to remove it alongside other water pollutants, in some cases achieving acceptable removal efficiencies. Certainly, there are many challenges in upscaling purification technologies due to the costs and lack of factual information about their adverse effects. This review presents different technologies that have been used to remove GLY from water since 2012 to date, its detection and removal methods, challenges, and future perspectives.
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Affiliation(s)
- Velma Beri Kimbi Yaah
- Environmental and Chemical Engineering, Faculty of Technology, University of Oulu. Oulu, Finland; NanoTech - Nanomaterials and Sustainable Chemical Technologies. Department of Inorganic Chemistry, Faculty of Science, University of Granada, Avda. Fuente Nueva, 18071, Granada, Spain
| | - Sajad Ahmadi
- Environmental and Chemical Engineering, Faculty of Technology, University of Oulu. Oulu, Finland
| | - Jennyffer Quimbayo M
- Environmental and Chemical Engineering, Faculty of Technology, University of Oulu. Oulu, Finland; Nano and Molecular Systems Research Unit (NANOMO), Faculty of Science, University of Oulu. Oulu, Finland
| | - Sergio Morales-Torres
- NanoTech - Nanomaterials and Sustainable Chemical Technologies. Department of Inorganic Chemistry, Faculty of Science, University of Granada, Avda. Fuente Nueva, 18071, Granada, Spain
| | - Satu Ojala
- Environmental and Chemical Engineering, Faculty of Technology, University of Oulu. Oulu, Finland
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5
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Mesnage R, Benbrook C. Use of the concept ‘environmentally relevant level’ in linking the results of pesticide toxicity studies to public health outcomes. ALL LIFE 2023. [DOI: 10.1080/26895293.2023.2167872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Affiliation(s)
- Robin Mesnage
- Gene Expression and Therapy Group, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, King's College London, London, UK
- Buchinger Wilhelmi Clinic, Überlingen, Germany
| | - Charles Benbrook
- Heartland Health Research Alliance and Benbrook Consulting Services, Port Orchard, WA, USA
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6
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Zhou Q, Li S, Zhao M, Liu Y, He N, Zhou X, Zhou D, Qian Z. Subchronic feeding study of glyphosate-tolerant maize GG2 with the gr79-epsps and gat genes in Wistar Han RCC rats. Regul Toxicol Pharmacol 2023; 145:105520. [PMID: 37884076 DOI: 10.1016/j.yrtph.2023.105520] [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: 07/29/2023] [Revised: 10/07/2023] [Accepted: 10/18/2023] [Indexed: 10/28/2023]
Abstract
The genetically modified (GM) maize GG2 contains gr79-epsps and gat genes, conferring glyphosate tolerance. The present study aimed to investigate potential effects of maize GG2 in a 90-day subchronic feeding study on Wistar Han RCC rats. Maize grains from GG2 or non-GM maize were incorporated into diets at concentrations of 25% and 50% and administered to Wistar Han RCC rats (n = 10/sex/group) for 90 days. The basal-diet group of rats (n = 10/sex/group) were fed with common commercialized rodent diet. Compared with rats fed with the corresponding non-GM maize and the basal-diet, no biologically relevant differences were observed in rats fed with the maize GG2, according to the results of body weight/gain, feed consumption/utilization, clinical signs, mortality, ophthalmology, clinical pathology (hematology, prothrombin time, urinalysis, serum chemistry), organ weights, and gross and microscopic pathology. Under the conditions of this study, these results indicated that maize GG2 is as safe as the non-GM maize in this 90-day feeding study.
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Affiliation(s)
- Qinghong Zhou
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Shufei Li
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Miao Zhao
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Yinghua Liu
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Ning He
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Xiaoli Zhou
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Dianming Zhou
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China
| | - Zhiyong Qian
- Department of Toxicology, Tianjin Centers for Disease Control and Prevention, Tianjin, 300011, China.
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7
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Rana I, Nguyen PK, Rigutto G, Louie A, Lee J, Smith MT, Zhang L. Mapping the key characteristics of carcinogens for glyphosate and its formulations: A systematic review. CHEMOSPHERE 2023; 339:139572. [PMID: 37474029 DOI: 10.1016/j.chemosphere.2023.139572] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 07/22/2023]
Abstract
Glyphosate was classified as a probable human carcinogen (Group 2A) by the International Agency for Research on Cancer (IARC) partially due to strong mechanistic evidence in 2015. Since then, numerous studies of glyphosate and its formulations (GBF) have emerged. These studies can be evaluated for cancer hazard identification with the newly described ten key characteristics (KC) of carcinogens approach. Our objective was to assess all in vivo, ex vivo, and in vitro mechanistic studies of human and experimental animals (mammals) that compared exposure to glyphosate/GBF with low/no exposure counterparts for evidence of the ten KCs. A protocol with our methods adhering to PRISMA guidelines was registered a priori (INPLASY202180045). Two blinded reviewers screened all in vivo, ex vivo, and in vitro studies of glyphosate/GBF exposure in humans/mammals reporting any KC-related outcome available in PubMed before August 2021. Studies that met inclusion criteria underwent data extraction conducted in duplicate for each KC outcome reported along with key aspects of internal/external validity, results, and reference information. These data were used to construct a matrix that was subsequently analyzed in the program R to conduct strength of evidence and quality assessments. Of the 2537 articles screened, 175 articles met inclusion criteria, from which we extracted >50,000 data points related to KC outcomes. Data analysis revealed strong evidence for KC2, KC4, KC5, KC6, KC8, limited evidence for KC1 and KC3, and inadequate evidence for KC7, KC9, and KC10. Notably, our in-depth quality analyses of genotoxicity (KC2) and endocrine disruption (KC8) revealed strong and consistent positive findings. For KC2, we found: 1) studies conducted in humans and human cells provided stronger positive evidence than counterpart animal models; 2) GBF elicited a stronger effect in both human and animal systems when compared to glyphosate alone; and 3) the highest quality studies in humans and human cells consistently revealed strong evidence of genotoxicity. Our analysis of KC8 indicated that glyphosate's ability to modulate hormone levels and estrogen receptor activity is sensitive to both exposure concentration and formulation. The modulations observed provide clear evidence that glyphosate interacts with receptors, alters receptor activation, and modulates the levels and effects of endogenous ligands (including hormones). Our findings strengthen the mechanistic evidence that glyphosate is a probable human carcinogen and provide biological plausibility for previously reported cancer associations in humans, such as non-Hodgkin lymphoma. We identified potential molecular interactions and subsequent key events that were used to generate a probable pathway to lymphomagenesis.
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Affiliation(s)
- Iemaan Rana
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, United States
| | - Patton K Nguyen
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, United States
| | - Gabrielle Rigutto
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, United States
| | - Allen Louie
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, United States
| | - Jane Lee
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, United States
| | - Martyn T Smith
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, United States
| | - Luoping Zhang
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA, United States.
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8
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Zhang W, Chen WJ, Chen SF, Lei Q, Li J, Bhatt P, Mishra S, Chen S. Cellular Response and Molecular Mechanism of Glyphosate Degradation by Chryseobacterium sp. Y16C. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:6650-6661. [PMID: 37084257 DOI: 10.1021/acs.jafc.2c07301] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Glyphosate is one of the most widely used herbicides worldwide. Unfortunately, the continuous use of glyphosate has resulted in serious environmental contamination and raised public concern about its impact on human health. In our previous study, Chryseobacterium sp. Y16C was isolated and characterized as an efficient degrader that can completely degrade glyphosate. However, the biochemical and molecular mechanisms underlying its glyphosate biodegradation ability remain unclear. In this study, the physiological response of Y16C to glyphosate stimulation was characterized at the cellular level. The results indicated that, in the process of glyphosate degradation, Y16C induced a series of physiological responses in the membrane potential, reactive oxygen species levels, and apoptosis. The antioxidant system of Y16C was activated to alleviate the oxidative damage caused by glyphosate. Furthermore, a novel gene, goW, was expressed in response to glyphosate. The gene product, GOW, is an enzyme that catalyzes glyphosate degradation, with putative structural similarities to glycine oxidase. GOW encodes 508 amino acids, with an isoelectric point of 5.33 and a molecular weight of 57.2 kDa, which indicates that it is a glycine oxidase. GOW displays maximum enzyme activity at 30 °C and pH 7.0. Additionally, most of the metal ions exhibited little influence on the enzyme activity except for Cu2+. Finally, with glyphosate as the substrate, the catalytic efficiency of GOW was higher than that of glycine, although opposite results were observed for the affinity. Taken together, the current study provides new insights to deeply understand and reveal the mechanisms of glyphosate degradation in bacteria.
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Affiliation(s)
- Wenping Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Wen-Juan Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
| | - Shao-Fang Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
| | - Qiqi Lei
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
| | - Jiayi Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
| | - Pankaj Bhatt
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette 47906, United States
| | - Sandhya Mishra
- Environmental Technologies Division, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
| | - Shaohua Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
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9
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Cullen MG, Bliss L, Stanley DA, Carolan JC. Investigating the effects of glyphosate on the bumblebee proteome and microbiota. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 864:161074. [PMID: 36566850 DOI: 10.1016/j.scitotenv.2022.161074] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Glyphosate is one of the most widely used herbicides globally. It acts by inhibiting an enzyme in an aromatic amino acid synthesis pathway specific to plants and microbes, leading to the view that it poses no risk to other organisms. However, there is growing concern that glyphosate is associated with health effects in humans and an ever-increasing body of evidence that suggests potential deleterious effects on other animals including pollinating insects such as bees. Although pesticides have long been considered a factor in the decline of wild bee populations, most research on bees has focussed on demonstrating and understanding the effects of insecticides. To assess whether glyphosate poses a risk to bees, we characterised changes in survival, behaviour, sucrose solution consumption, the digestive tract proteome, and the microbiota in the bumblebee Bombus terrestris after chronic exposure to field relevant doses of technical grade glyphosate or the glyphosate-based formulation, RoundUp Optima+®. Regardless of source, there were changes in response to glyphosate exposure in important cellular and physiological processes in the digestive tract of B. terrestris, with proteins associated with oxidative stress regulation, metabolism, cellular adhesion, the extracellular matrix, and various signalling pathways altered. Interestingly, proteins associated with endocytosis, oxidative phosphorylation, the TCA cycle, and carbohydrate, lipid, and amino acid metabolism were differentially altered depending on whether the exposure source was glyphosate alone or RoundUp Optima+®. In addition, there were alterations to the digestive tract microbiota of bees depending on the glyphosate source No impacts on survival, behaviour, or food consumption were observed. Our research provides insights into the potential mode of action and consequences of glyphosate exposure at the molecular, cellular and organismal level in bumblebees and highlights issues with the current honeybee-centric risk assessment of pesticides and their formulations, where the impact of co-formulants on non-target organisms are generally overlooked.
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Affiliation(s)
- Merissa G Cullen
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland.
| | - Liam Bliss
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
| | - Dara A Stanley
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 2, Ireland; Earth Institute, University College Dublin, Belfield, Dublin 2, Ireland
| | - James C Carolan
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
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10
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Lacroix R, Kurrasch DM. Glyphosate Toxicity: In Vivo, In Vitro, and Epidemiological Evidence. Toxicol Sci 2023; 192:kfad018. [PMID: 36857578 DOI: 10.1093/toxsci/kfad018] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
Glyphosate is the most applied agricultural chemical worldwide and has become nearly ubiquitous throughout the environment. Glyphosate is an effective herbicide because it disrupts the shikimate pathway, which is responsible for the synthesis of essential amino acids in plants and microorganisms. Given that there is no known target for glyphosate in higher animals, its toxicity to humans and other animals is heavily debated, especially after the 2015 IARC ruling that glyphosate is carcinogenic. Today, a growing body of literature shows in vitro, in vivo, and epidemiological evidence for the toxicity of glyphosate across animal species. With the application of glyphosate increasing globally, it is important to discuss these reports to enable a broader conversation on glyphosate toxicity and its impact on human and environmental health. Here, we summarize the recent glyphosate literature and discuss its implications.
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Affiliation(s)
- Rachel Lacroix
- Department of Medical Genetics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute (ACHRI), Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Deborah M Kurrasch
- Department of Medical Genetics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Alberta Children's Hospital Research Institute (ACHRI), Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
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11
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Moldovan H, Imre S, Duca RC, Farczádi L. Methods and Strategies for Biomonitoring in Occupational Exposure to Plant Protection Products Containing Glyphosate. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3314. [PMID: 36834010 PMCID: PMC9960360 DOI: 10.3390/ijerph20043314] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/04/2023] [Accepted: 02/10/2023] [Indexed: 05/26/2023]
Abstract
Glyphosate, and the ever growing reliance on its use in agriculture, has been a point of contention for many years. There have been debates regarding the risk and safety of using glyphosate-based herbicides as well as the effects of occupational, accidental, or systematic. Although there have been a number of studies conducted, the biomonitoring of glyphosate poses a series of challenges. Researchers attempting to determine the occupational exposure face questions regarding the most appropriate analytical techniques and sampling procedures. The present review aims to summarize and synthetize the analytical methodologies available and suitable for the purpose of glyphosate biomonitoring studies as well as discuss the advantages and disadvantages of each analytical technique, from the most modern to more well-established and older ones. The most relevant publications that have described analytical methods and published within the last 12 years were studied. Methods were compared, and the advantages and disadvantages of each methods were discussed. A total of 35 manuscripts describing analytical methods for glyphosate determination were summarized and discussed, with the most relevant one being compared. For methods that were not intended for biological samples, we discussed if they could be used for biomonitoring and approaches to adapt these methods for this purpose.
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Affiliation(s)
- Horațiu Moldovan
- Department of Occupational Medicine, Faculty of Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Târgu Mureş, Romania
| | - Silvia Imre
- Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Târgu Mureş, Romania
- Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Târgu Mureş, Romania
| | - Radu Corneliu Duca
- Environmental Hygiene and Biological Monitoring Unit, Department of Health Protection, National Health Laboratory (LNS), 3555 Dudelange, Luxembourg
| | - Lénárd Farczádi
- Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science, and Technology, 540142 Târgu Mureş, Romania
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de Batista DG, de Batista EG, Miragem AA, Ludwig MS, Heck TG. Disturbance of cellular calcium homeostasis plays a pivotal role in glyphosate-based herbicide-induced oxidative stress. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:9082-9102. [PMID: 36441326 DOI: 10.1007/s11356-022-24361-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Glyphosate-based herbicides (GBHs) are the most worldwide used pesticides. The wide application of GBHs contaminates the soil and, consequently, water and food resources reaching human consumption. GBHs induce oxidative stress in non-target organisms, leading to a pro-inflammatory and pro-apoptotic cellular status, promoting tissue dysfunction and, thus, metabolic and neurobehavioral changes. This review presents evidence of oxidative damage induced by GBHs and the mechanism of cell damage and health consequences. To summarize, exposure to GBHs may induce disorders in calcium homeostasis related to the activation of ion channels. Also, alterations in pathways related to redox state regulation must have a primordial role in oxidative stress caused by GBHs.
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Affiliation(s)
- Diovana Gelati de Batista
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State, Rio Grande Do Sul State, Ijuí, Brazil.
- Postgraduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State, Rio Grande Do Sul State, Ijuí, Brazil.
- Research Group in Cell Stress Response, Federal Institute of Education, Science and Technology Farroupilha, Rio Grande Do Sul State, Santa Rosa, Brazil.
- Postgraduate Program in Mathematical and Computational Modeling, Regional University of Northwestern Rio Grande Do Sul State, Rio Grande Do Sul State, Ijuí, Brazil.
| | - Edivania Gelati de Batista
- Research Group in Cell Stress Response, Federal Institute of Education, Science and Technology Farroupilha, Rio Grande Do Sul State, Santa Rosa, Brazil
| | - Antônio Azambuja Miragem
- Research Group in Cell Stress Response, Federal Institute of Education, Science and Technology Farroupilha, Rio Grande Do Sul State, Santa Rosa, Brazil
| | - Mirna Stela Ludwig
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State, Rio Grande Do Sul State, Ijuí, Brazil
- Postgraduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State, Rio Grande Do Sul State, Ijuí, Brazil
| | - Thiago Gomes Heck
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State, Rio Grande Do Sul State, Ijuí, Brazil
- Postgraduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State, Rio Grande Do Sul State, Ijuí, Brazil
- Postgraduate Program in Mathematical and Computational Modeling, Regional University of Northwestern Rio Grande Do Sul State, Rio Grande Do Sul State, Ijuí, Brazil
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Bukowska B, Woźniak E, Sicińska P, Mokra K, Michałowicz J. Glyphosate disturbs various epigenetic processes in vitro and in vivo - A mini review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 851:158259. [PMID: 36030868 DOI: 10.1016/j.scitotenv.2022.158259] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/15/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
Glyphosate in the concentrations corresponding to environmental or occupational exposure has been shown to induce epigenetic changes potentially involved in carcinogenesis. This substance (1) changes the global methylation in various cell types and organisms and is responsible for the methylation of different promoters of individual genes, such as TP53 and P21 in human PBMCs, (2) decreases H3K27me3 methylation and H3 acetylation and increases H3K9 methylation and H4 acetylation in rats, (3) increases the expression of P16, P21, CCND1 in human PBMCs, and the expression of EGR1, JUN, FOS, and MYC in HEK293 cells, but decreases TP53 expression in human PBMCs, (4) changes the expression of genes DNMT1, HDAC3, TET1, TET2, TET3 involved in chromatin architecture, e.g. in fish Japanese medaka, (5) alters the expression of various small, single-stranded, non-coding RNA molecules engaged in post-transcriptional regulation of gene expression, such as miRNA 182-5p in MCF10A cells, miR-30 and miR-10 in mammalian stem cells, as well as several dozen of murine miRNAs. Epigenetic changes caused by glyphosate can persist over time and can be passed on to the offsprings in the next generation; in the third generation they can result in some disorders development, such as prostate disease or obesity. Some epigenetic mechanisms have indicated a potential risk of breast cancer development in human as a result of the exposure to glyphosate. It should be emphasized that the majority of reported epigenetic changes have not yet been associated with the final metabolic effects, which may depend on many other factors.
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Affiliation(s)
- Bożena Bukowska
- Department of Biophysics of Environmental Pollution, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska Str. 141/143, 90-236 Lodz, Poland.
| | - Ewelina Woźniak
- Laboratory of Tissue Immunopharmacology, Department of Internal Diseases and Clinical Pharmacology, Medical University of Lodz, Kniaziewicza 1/5, 91-347 Lodz, Poland
| | - Paulina Sicińska
- Department of Biophysics of Environmental Pollution, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska Str. 141/143, 90-236 Lodz, Poland
| | - Katarzyna Mokra
- Department of Biophysics of Environmental Pollution, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska Str. 141/143, 90-236 Lodz, Poland
| | - Jaromir Michałowicz
- Department of Biophysics of Environmental Pollution, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska Str. 141/143, 90-236 Lodz, Poland
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Zhang W, Li J, Zhang Y, Wu X, Zhou Z, Huang Y, Zhao Y, Mishra S, Bhatt P, Chen S. Characterization of a novel glyphosate-degrading bacterial species, Chryseobacterium sp. Y16C, and evaluation of its effects on microbial communities in glyphosate-contaminated soil. JOURNAL OF HAZARDOUS MATERIALS 2022; 432:128689. [PMID: 35325860 DOI: 10.1016/j.jhazmat.2022.128689] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 06/14/2023]
Abstract
Widespread use of the herbicide glyphosate in agriculture has resulted in serious environmental problems. Thus, environment-friendly technological solutions are urgently needed for the removal of residual glyphosate from soil. Here, we successfully isolated a novel bacterial strain, Chryseobacterium sp. Y16C, which efficiently degrades glyphosate and its main metabolite aminomethylphosphonic acid (AMPA). Strain Y16C was found to completely degrade glyphosate at 400 mg·L-1 concentration within four days. Kinetics analysis indicated that glyphosate biodegradation was concentration-dependent, with a maximum specific degradation rate, half-saturation constant, and inhibition constant of 0.91459 d-1, 15.79796 mg·L-1, and 290.28133 mg·L-1, respectively. AMPA was identified as the major degradation product of glyphosate degradation, suggesting that glyphosate was first degraded via cleavage of its C-N bond prior to subsequent metabolic degradation. Strain Y16C was also found to tolerate and degrade AMPA at concentrations up to 800 mg·L-1. Moreover, strain Y16C accelerated glyphosate degradation in soil indirectly by inducing a slight alteration in the diversity and composition of soil microbial community. Taken together, our results suggest that strain Y16C may be a potential microbial agent for bioremediation of glyphosate-contaminated soil.
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Affiliation(s)
- Wenping Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Jiayi Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
| | - Yuming Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
| | - Xiaozhen Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Zhe Zhou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Yaohua Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Yingjie Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
| | - Sandhya Mishra
- Environmental Technologies Division, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India
| | - Pankaj Bhatt
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Shaohua Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China.
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Alvarez-Moya C, Sámano-León AG, Reynoso-Silva M, Ramírez-Velasco R, Ruiz-López MA, Villalobos-Arámbula AR. Antigenotoxic Effect of Ascorbic Acid and Resveratrol in Erythrocytes of Ambystoma mexicanum, Oreochromis niloticus and Human Lymphocytes Exposed to Glyphosate. Curr Issues Mol Biol 2022; 44:2230-2242. [PMID: 35678680 PMCID: PMC9164025 DOI: 10.3390/cimb44050151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 05/01/2022] [Accepted: 05/06/2022] [Indexed: 11/16/2022] Open
Abstract
Glyphosate is a controversial herbicide. Its genotoxicity and presence in various ecosystems have been reported. The use of ascorbic acid and resveratrol could protect different organisms from glyphosate-induced genetic damage. In the present study, specific genetic damage induced by glyphosate was evaluated in erythrocytes of Oreochromis niloticus, Ambystoma mexicanum and human lymphocytes. Simultaneously, the antigenotoxic capacity of various concentrations of ascorbic acid and resveratrol was evaluated by means of pretreatment and simultaneous treatment protocols. The 0.03, 0.05 and 0.07 mM concentrations of glyphosate induced significant genotoxic activity (p < 0.05) in human lymphocytes and in erythrocytes of the species studied, and could cause genomic instability in these populations. The reduction in genetic damage observed in human lymphocytes exposed to high concentrations of glyphosate is only apparent: excessive genetic damage was associated with undetectable excessive tail migration length. A significant (p < 0.05) antigenotoxic effect of ascorbic acid and resveratrol was observed in all concentrations, organisms and protocols used. Both ascorbic acid and resveratrol play an important role in maintaining the integrity of DNA. Ascorbic acid in Oreochromis niloticus, Ambystoma mexicanum reduced glyphosate-induced genetic damage to a basal level. Therefore, our data indicate that these antioxidants could help preserve the integrity of the DNA of organisms exposed to glyphosate. The consumption of antioxidants is a useful tool against the genotoxicity of glyphosate.
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Affiliation(s)
- Carlos Alvarez-Moya
- Environmental Mutagenesis Laboratory, Cellular and Molecular Department, University of Guadalajara, Guadalajara 45200, Jalisco, Mexico; (A.G.S.-L.); (R.R.-V.)
- Correspondence: (C.A.-M.); (M.R.-S.); Tel.: +52-377-77-1121 (C.A.-M.); +52-333-777-1121 (M.R.-S.)
| | - Alexis Gerardo Sámano-León
- Environmental Mutagenesis Laboratory, Cellular and Molecular Department, University of Guadalajara, Guadalajara 45200, Jalisco, Mexico; (A.G.S.-L.); (R.R.-V.)
| | - Mónica Reynoso-Silva
- Environmental Mutagenesis Laboratory, Cellular and Molecular Department, University of Guadalajara, Guadalajara 45200, Jalisco, Mexico; (A.G.S.-L.); (R.R.-V.)
- Correspondence: (C.A.-M.); (M.R.-S.); Tel.: +52-377-77-1121 (C.A.-M.); +52-333-777-1121 (M.R.-S.)
| | - Rafael Ramírez-Velasco
- Environmental Mutagenesis Laboratory, Cellular and Molecular Department, University of Guadalajara, Guadalajara 45200, Jalisco, Mexico; (A.G.S.-L.); (R.R.-V.)
| | - Mario Alberto Ruiz-López
- Biotechnology Laboratory, Department of Botany and Zoology, University of Guadalajara, Guadalajara 45200, Jalisco, Mexico;
| | - Alma Rosa Villalobos-Arámbula
- Molecular and Functional Genetics and Ecosystems Laboratory of Biomarkers and Molecular Genetics, Cellular and Molecular Departament, University of Guadalajara, Guadalajara 45200, Jalisco, Mexico;
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Sharma H, Saha A, Mishra AK, Rai MK, Deb MK. Diazotized reagent for spectrophotometric determination of glyphosate pesticide in environmental and agricultural samples. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Finkler M, Rodrigues GZP, Kayser JM, Ziulkoski AL, Gehlen G. Cytotoxic and genotoxic effects induced by associated commercial glyphosate and 2,4-D formulations using the Allium cepa bioassay. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2022; 57:133-141. [PMID: 35112655 DOI: 10.1080/03601234.2022.2034432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Studies assessing the toxicity of glyphosate and 2,4-dichlorophenoxyacetic acid mixture are scarce. The aim of this study was to evaluate the cytotoxicity and genotoxicity of the mixture of these herbicides using Allium cepa. Roots were exposed to glyphosate (1.56 and 11.66 mg mL-1), 2,4-D (0.28 and 17.5 mg mL-1) and mixture for 24 h, based on the average concentration applied in the field and the acute reference dose (ARfD) established in Brazil. Both isolated and associated herbicides induced a significative decrease in mitotic index (MI) (P < 0.0001) in all tested concentrations. Regarding the genotoxicity results, 2,4-D and the mixture showed, at concentrations applied in the field, a significative increase of chromosomal anomalies (CA) index compared to control (P < 0.0001) and glyphosate (P = 0.024 and P = 0.0002, respectively). All tested groups from the ARfD showed a significative difference compared to the control group (P < 0.0001), as well as glyphosate and 2,4-D isolated compared to the mixture (P = 0.0005 and P < 0.0001, respectively). The most observed CA were apoptotic bodies, giant cells, and nuclear erosions. We emphasize the need for further studies assessing the toxicity of these herbicides' mixture due to the distinct effects caused in different organisms.
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Affiliation(s)
- Mariana Finkler
- Laboratório de Histologia Comparada, Universidade Feevale, Novo Hamburgo, Brazil
| | | | | | | | - Günther Gehlen
- Laboratório de Histologia Comparada, Universidade Feevale, Novo Hamburgo, Brazil
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Barbosa A, Oliveira MC, Kuhn-Fraga C, Ribeiro LDFC, Balbo SL, Torrejais MM. Study of muscle fibers of the extensor digitorium longus and soleus muscles of C57BL/6 females exposed to glyphosate during pregnancy and lactation. EINSTEIN-SAO PAULO 2021; 19:eAO5657. [PMID: 34406313 PMCID: PMC8328150 DOI: 10.31744/einstein_journal/2021ao5657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 11/25/2020] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To evaluate the morphology and morphometry of the muscles extensor digitorium longus and soleus of C57BL/6 females, who were exposed to glyphosate during pregnancy and lactation. METHODS Twelve female mice from the C57BL/6 lineage were used. After detection of pregnancy, they were divided into a Control Group, which received only water, and a Glyphosate Group, which received water with 0.5% glyphosate during pregnancy and lactation. Both groups received ad libitum standard diet. After weaning, the females were euthanized and weighed; naso-anal length was measured, and fats were collected and weighed. The muscles extensor digitorium longus and soleus were collected, and their length and weight were measured. Then, the muscles were fixed in Methacarn to perform the histological study of muscle fibers. RESULTS Glyphosate Group presented lower weight gain during pregnancy and also lower final body weight and naso-anal length; however, the other body parameters evaluated did not present a significant difference in relation to the Control Group. Significant differences were also not observed in the analysis of muscle fibers and connective tissue. CONCLUSION Exposure to 0.5% glyphosate during pregnancy and lactation resulted in lower weight gain during pregnancy, final weight, and naso-anal length. Despite not directly altering the morphology of muscle tissue, these results may indicate enough exposure to interfere with animal metabolism.
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Affiliation(s)
- Ariadne Barbosa
- Universidade Estadual do Oeste do ParanáCascavelPRBrazilUniversidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
| | - Mylena Campos Oliveira
- Universidade Estadual do Oeste do ParanáCascavelPRBrazilUniversidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
| | - Camila Kuhn-Fraga
- Universidade Estadual do Oeste do ParanáCascavelPRBrazilUniversidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
| | | | - Sandra Lucinei Balbo
- Universidade Estadual do Oeste do ParanáCascavelPRBrazilUniversidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
| | - Márcia Miranda Torrejais
- Universidade Estadual do Oeste do ParanáCascavelPRBrazilUniversidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
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Rossetti MF, Canesini G, Lorenz V, Milesi MM, Varayoud J, Ramos JG. Epigenetic Changes Associated With Exposure to Glyphosate-Based Herbicides in Mammals. Front Endocrinol (Lausanne) 2021; 12:671991. [PMID: 34093442 PMCID: PMC8177816 DOI: 10.3389/fendo.2021.671991] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/03/2021] [Indexed: 01/01/2023] Open
Abstract
Glyphosate is a phosphonomethyl amino acid derivative present in a number of non-selective and systemic herbicides. During the last years the use of glyphosate-based herbicide (GBH) has been increasing exponentially around the world, including Argentina. This fact added to the detection of glyphosate, and its main metabolite, amino methylphosphonic acid (AMPA), in environmental matrices such as soil, sediments, and food, has generated great concern about its risks for humans, animals, and environment. During the last years, there were controversy and intense debate regarding the toxicological effects of these compounds associated with the endocrine system, cancer, reproduction, and development. The mechanisms of action of GBH and their metabolites are still under investigation, although recent findings have shown that they could comprise epigenetic modifications. These are reversible mechanisms linked to tissue-specific silencing of gene expression, genomic imprinting, and tumor growth. Particularly, glyphosate, GBH, and AMPA have been reported to produce changes in global DNA methylation, methylation of specific genes, histone modification, and differential expression of non-coding RNAs in human cells and rodents. Importantly, the epigenome could be heritable and could lead to disease long after the exposure has ended. This mini-review summarizes the epigenetic changes produced by glyphosate, GBHs, and AMPA in humans and rodents and proposes it as a potential mechanism of action through which these chemical compounds could alter body functions.
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Affiliation(s)
- María Florencia Rossetti
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral (UNL)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
- Departamento de Bioquímica Clínica y Cuantitativa, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Guillermina Canesini
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral (UNL)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
- Cátedra de Patología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Virginia Lorenz
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral (UNL)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - María Mercedes Milesi
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral (UNL)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
- Cátedra de Fisiología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Jorgelina Varayoud
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral (UNL)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
- Cátedra de Fisiología Humana, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Jorge Guillermo Ramos
- Instituto de Salud y Ambiente del Litoral (ISAL), Universidad Nacional del Litoral (UNL)- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
- Departamento de Bioquímica Clínica y Cuantitativa, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
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Parlapiano I, Biandolino F, Grattagliano A, Ruscito A, Libralato G, Prato E. Effects of commercial formulations of glyphosate on marine crustaceans and implications for risk assessment under temperature changes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 213:112068. [PMID: 33636470 DOI: 10.1016/j.ecoenv.2021.112068] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 02/04/2021] [Accepted: 02/14/2021] [Indexed: 06/12/2023]
Abstract
Glyphosate-based formulations are the most commonly used herbicides worldwide with the risk of potential contamination of aquatic bodies. The present study assessed the response of four marine crustaceans to three different brands of herbicides Roundup®Platinum, Efesto® and Taifun® MK CL.T, under two selected temperatures of 20 °C and 30 °C. The harpacticoid copepod Tigriopus fulvus, the anostracan Artemia franciscana, the amphipod Corophium insidiosum and the isopod Sphaeroma serratum were chosen as testing organisms. Effects of herbicides and temperatures were assessed by estimating lethal concentrations. The results showed that the high temperature rises the toxicity of glyphosate with an increase of mortality of all the tested species. This is an important aspect for future risk assessments of pesticides under global climate change scenarios. Efesto® resulted the most toxic brand, showing C. insidiosum the most sensitive with 96 h-LC50 values of 3.25 mg/L acid equivalent (a.e.) at 30 °C and 7.94 mg/L a.e. at 20 °C followed by T. fulvus while A. franciscana and S. serratum were the less sensitive. This study provides important information for assessing the toxic effects of three different brands of glyphosate-based herbicides on non-target marine organisms suggesting that they should be carefully managed to minimize any negative impact on marine organisms.
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Affiliation(s)
- Isabella Parlapiano
- National Research Council, Water Research Institute (IRSA-CNR), Via Roma, 3, 74123 Taranto, Italy
| | - Francesca Biandolino
- National Research Council, Water Research Institute (IRSA-CNR), Via Roma, 3, 74123 Taranto, Italy
| | - Asia Grattagliano
- Department of Chemical Sciences and Technologies, University of Rome "Tor Vergata", Via della Ricerca Scientifica, 1, 00133 Roma, Italy
| | - Andrea Ruscito
- Department of Chemical Sciences and Technologies, University of Rome "Tor Vergata", Via della Ricerca Scientifica, 1, 00133 Roma, Italy
| | - Giovanni Libralato
- Department of Biology, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126 Naples, Italy
| | - Ermelinda Prato
- National Research Council, Water Research Institute (IRSA-CNR), Via Roma, 3, 74123 Taranto, Italy.
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Ighalo JO, Ajala OJ, Adeniyi AG, Babatunde EO, Ajala MA. Ecotoxicology of glyphosate and recent advances in its mitigation by adsorption. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:2655-2668. [PMID: 33164125 DOI: 10.1007/s11356-020-11521-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 11/02/2020] [Indexed: 05/25/2023]
Abstract
Glyphosate (N-[phosphonomethyl]glycine) is one of the most popular herbicides now used in agricultural practice. The aim of this paper was to discuss the research progress and innovations in recent years on the mitigation of glyphosate (GLY) from aqueous media by adsorption. The ecotoxicology of GLY was discussed in the domain of its chronic and sub-chronic toxicity, genotoxicity, reproductive toxicity, and carcinogenicity, and potential risks of food contamination were discussed. It was observed that polymers and resins are the best class of adsorbents for GLY adsorption from aqueous media. GLY adsorption was best fit to either Freundlich or Langmuir isotherm depending on the nature of the adsorbent. The pseudo-second-order kinetics was also the best fit for modelling the kinetics of GLY adsorption. A review of the thermodynamics revealed that GLY adsorption was usually spontaneous and exothermic. Research trends and knowledge gaps are in the area of chemical mobility in environmental systems (especially in the presence of other chemical species), the use of heavy metal-laden adsorbent and molecular modelling. Furthermore, it was observed that the ecotoxicology of GLY still has some contentious areas where there is no conclusive stance.
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Affiliation(s)
- Joshua O Ighalo
- Department of Chemical Engineering, Faculty of Engineering and Technology, University of Ilorin, P. M. B 1515, Ilorin, Nigeria
- Department of Chemical Engineering, Nnamdi Azikiwe University, P. M. B. 5025, Awka, Nigeria
| | - Oluwaseun Jacob Ajala
- Department of Industrial Chemistry, Faculty of Physical Sciences, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria.
- Department of Pure and Applied Chemistry, Ladoke Akintola University of Technology, P. M. B. 4000, Ogbomoso, Nigeria.
| | - Adewale George Adeniyi
- Department of Chemical Engineering, Faculty of Engineering and Technology, University of Ilorin, P. M. B 1515, Ilorin, Nigeria
| | - Esther O Babatunde
- Department of Chemical Engineering, Faculty of Engineering and Technology, University of Ilorin, P. M. B 1515, Ilorin, Nigeria
| | - Mary A Ajala
- Department of Chemical Engineering, Faculty of Engineering and Technology, University of Ilorin, P. M. B 1515, Ilorin, Nigeria
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22
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Mesnage R, Teixeira M, Mandrioli D, Falcioni L, Ducarmon QR, Zwittink RD, Mazzacuva F, Caldwell A, Halket J, Amiel C, Panoff JM, Belpoggi F, Antoniou MN. Use of Shotgun Metagenomics and Metabolomics to Evaluate the Impact of Glyphosate or Roundup MON 52276 on the Gut Microbiota and Serum Metabolome of Sprague-Dawley Rats. ENVIRONMENTAL HEALTH PERSPECTIVES 2021; 129:17005. [PMID: 33502259 PMCID: PMC7839352 DOI: 10.1289/ehp6990] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 12/10/2020] [Accepted: 12/11/2020] [Indexed: 05/04/2023]
Abstract
BACKGROUND There is intense debate on whether glyphosate can inhibit the shikimate pathway of gastrointestinal microorganisms, with potential health implications. OBJECTIVES We tested whether glyphosate or its representative EU herbicide formulation Roundup MON 52276 affects the rat gut microbiome. METHODS We combined cecal microbiome shotgun metagenomics with serum and cecum metabolomics to assess the effects of glyphosate [0.5, 50, 175 mg / kg body weight ( BW ) per day ] or MON 52276 at the same glyphosate-equivalent doses, in a 90-d toxicity test in rats. RESULTS Glyphosate and MON 52276 treatment resulted in ceca accumulation of shikimic acid and 3-dehydroshikimic acid, suggesting inhibition of 5-enolpyruvylshikimate-3-phosphate synthase of the shikimate pathway in the gut microbiome. Cysteinylglycine, γ -glutamylglutamine , and valylglycine levels were elevated in the cecal microbiome following glyphosate and MON 52276 treatments. Altered cecum metabolites were not differentially expressed in serum, suggesting that the glyphosate and MON 52276 impact on gut microbial metabolism had limited consequences on physiological biochemistry. Serum metabolites differentially expressed with glyphosate treatment were associated with nicotinamide, branched-chain amino acid, methionine, cysteine, and taurine metabolism, indicative of a response to oxidative stress. MON 52276 had similar, but more pronounced, effects than glyphosate on the serum metabolome. Shotgun metagenomics of the cecum showed that treatment with glyphosate and MON 52276 resulted in higher levels of Eggerthella spp., Shinella zoogleoides, Acinetobacter johnsonii, and Akkermansia muciniphila. Shinella zoogleoides was higher only with MON 52276 exposure. In vitro culture assays with Lacticaseibacillus rhamnosus strains showed that Roundup GT plus inhibited growth at concentrations at which MON 52276 and glyphosate had no effect. DISCUSSION Our study highlights the power of multi-omics approaches to investigate the toxic effects of pesticides. Multi-omics revealed that glyphosate and MON 52276 inhibited the shikimate pathway in the rat gut microbiome. Our findings could be used to develop biomarkers for epidemiological studies aimed at evaluating the effects of glyphosate herbicides on humans. https://doi.org/10.1289/EHP6990.
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Affiliation(s)
- Robin Mesnage
- Gene Expression and Therapy Group, Department of Medical and Molecular Genetics, King’s College London, Faculty of Life Sciences & Medicine, Guy’s Hospital, London, UK
| | - Maxime Teixeira
- Unité de Recherche Aliments Bioprocédés Toxicologie Environnements, University of Caen Normandy, Caen, France
| | | | | | - Quinten Raymond Ducarmon
- Center for Microbiome Analyses and Therapeutics, Leiden University Medical Center, Leiden, Netherlands
| | - Romy Daniëlle Zwittink
- Center for Microbiome Analyses and Therapeutics, Leiden University Medical Center, Leiden, Netherlands
| | | | - Anna Caldwell
- Mass Spectrometry Facility, King’s College London, London, UK
| | - John Halket
- Mass Spectrometry Facility, King’s College London, London, UK
| | - Caroline Amiel
- Unité de Recherche Aliments Bioprocédés Toxicologie Environnements, University of Caen Normandy, Caen, France
| | - Jean-Michel Panoff
- Unité de Recherche Aliments Bioprocédés Toxicologie Environnements, University of Caen Normandy, Caen, France
| | | | - Michael Nicolas Antoniou
- Gene Expression and Therapy Group, Department of Medical and Molecular Genetics, King’s College London, Faculty of Life Sciences & Medicine, Guy’s Hospital, London, UK
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23
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Peillex C, Pelletier M. The impact and toxicity of glyphosate and glyphosate-based herbicides on health and immunity. J Immunotoxicol 2020; 17:163-174. [PMID: 32897110 DOI: 10.1080/1547691x.2020.1804492] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/13/2020] [Accepted: 07/29/2020] [Indexed: 12/20/2022] Open
Abstract
Glyphosate, or N-phosphomethyl(glycine), is an organophosphorus compound and a competitive inhibitor of the shikimate pathway that allows aromatic amino acid biosynthesis in plants and microorganisms. Its utilization in broad-spectrum herbicides, such as RoundUp®, has continued to increase since 1974; glyphosate, as well as its primary metabolite aminomethylphosphonic acid, is measured in soils, water, plants, animals and food. In humans, glyphosate is detected in blood and urine, especially in exposed workers, and is excreted within a few days. It has long been regarded as harmless in animals, but growing literature has reported health risks associated with glyphosate and glyphosate-based herbicides. In 2017, the International Agency for Research on Cancer (IARC) classified glyphosate as "probably carcinogenic" in humans. However, other national agencies did not tighten their glyphosate restrictions and even prolonged authorizations of its use. There are also discrepancies between countries' authorized levels, demonstrating an absence of a clear consensus on glyphosate to date. This review details the effects of glyphosate and glyphosate-based herbicides on fish and mammal health, focusing on the immune system. Increasing evidence shows that glyphosate and glyphosate-based herbicides exhibit cytotoxic and genotoxic effects, increase oxidative stress, disrupt the estrogen pathway, impair some cerebral functions, and allegedly correlate with some cancers. Glyphosate effects on the immune system appear to alter the complement cascade, phagocytic function, and lymphocyte responses, and increase the production of pro-inflammatory cytokines in fish. In mammals, including humans, glyphosate mainly has cytotoxic and genotoxic effects, causes inflammation, and affects lymphocyte functions and the interactions between microorganisms and the immune system. Importantly, even as many outcomes are still being debated, evidence points to a need for more studies to better decipher the risks from glyphosate and better regulation of its global utilization.
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Affiliation(s)
- Cindy Peillex
- Master de Biologie, École Normale Supérieure de Lyon, Université Claude Bernard Lyon I, Université de Lyon, Lyon, France
- Infectious and Immune Disease Axis, CHU de Québec-Université Laval Research Center, Quebec City, Canada
- ARThrite Research Center, Laval University, Quebec City, Canada
| | - Martin Pelletier
- Infectious and Immune Disease Axis, CHU de Québec-Université Laval Research Center, Quebec City, Canada
- ARThrite Research Center, Laval University, Quebec City, Canada
- Department of Microbiology-Infectious Diseases and Immunology, Faculty of Medicine, Laval University, Quebec City, Canada
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24
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Benbrook CM, Davis DR. The dietary risk index system: a tool to track pesticide dietary risks. Environ Health 2020; 19:103. [PMID: 33050918 PMCID: PMC7557078 DOI: 10.1186/s12940-020-00657-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/15/2020] [Indexed: 05/10/2023]
Abstract
BACKGROUND For years the United States Department of Agriculture's Pesticide Data Program and the United Kingdom's Food Standards Agency have published annual or quarterly data on pesticide residues in foods. Both programs report residues in conventionally grown, organic, and imported foods. The US program has tested about 288,000 food samples since 1992, primarily fruits and vegetables consumed by children. Since 1999 the UK has tested about 72,000 samples of a wider range of foods. These data are vital inputs in tracking trends in pesticide dietary risks. METHODS The Dietary Risk Index (DRI) system facilitates detailed analyses of US and UK pesticide residue data, trends, and chronic risk distributions. The DRI value for a pesticide is the dietary intake of that pesticide from a single serving of food divided by the pesticide's acceptable daily intake as set by the US Environmental Protection Agency. It can be calculated based on average annual residue concentrations, and on residue levels in individual samples of food. DRI values can be aggregated over multiple pesticides in single foods, and over individual pesticides in multiple foods. RESULTS The DRI system provides insights into the levels, trends, and distribution of pesticide dietary risk across most widely consumed foods. By drawing on both US Pesticide Data Program and UK-Food Standards Agency residue data, the DRI is capable of assessing pesticide risks in a significant portion of the global food supply. Substantial reductions in pesticide dietary risks occurred in the early 2000s, primarily from replacement of organophosphate insecticides with seemingly lower-risk neonicotinoids. However, there remain several areas of concern and opportunities to reduce risks. Both herbicide and fungicide dietary risks are rising. Organically grown produce poses risks far lower than corresponding, conventionally grown produce. Risk differences are inconsistent between domestic and imported foods. CONCLUSIONS The surest ways to markedly reduce pesticide dietary risks are to shift relatively high-risk fruits and vegetables to organic production. For other foods, reducing reliance on pesticides overall, and especially high-risk pesticides, will incrementally lower risks. The DRI system can help focus such efforts and track progress in reducing pesticide dietary risk.
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Affiliation(s)
- Charles M. Benbrook
- Benbrook Consulting Services, 10526 SE Vashon Vista Drive, Port Orchard, WA 98367 USA
| | - Donald R. Davis
- Biochemical Institute, The University of Texas, Austin, TX 78712 USA
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25
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Wilson AE, Michaud SA, Jackson AM, Stenhouse G, Coops NC, Janz DM. Development and validation of protein biomarkers of health in grizzly bears. CONSERVATION PHYSIOLOGY 2020; 8:coaa056. [PMID: 32607241 PMCID: PMC7311831 DOI: 10.1093/conphys/coaa056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 04/09/2020] [Accepted: 05/31/2020] [Indexed: 06/11/2023]
Abstract
Large carnivores play critical roles in the maintenance and function of natural ecosystems; however, the populations of many of these species are in decline across the globe. Therefore, there is an urgent need to develop novel techniques that can be used as sensitive conservation tools to detect new threats to the health of individual animals well in advance of population-level effects. Our study aimed to determine the expression of proteins related to energetics, reproduction and stress in the skin of grizzly bears (Ursus arctos) using a liquid chromatography and multiple reaction monitoring mass spectrometry assay. We hypothesized that a suite of target proteins could be measured using this technique and that the expression of these proteins would be associated with biological (sex, age, sample location on body) and environmental (geographic area, season, sample year) variables. Small skin biopsies were collected from free-ranging grizzly bears in Alberta, Canada, from 2013 to 2019 (n = 136 samples from 111 individuals). Over 700 proteins were detected in the skin of grizzly bears, 19 of which were chosen as targets because of their established roles in physiological function. Generalized linear mixed model analysis was used for each target protein. Results indicate that sample year influenced the majority of proteins, suggesting that physiological changes may be driven in part by responses to changes in the environment. Season influenced the expression of proteins related to energetics, reproduction and stress, all of which were lower during fall compared to early spring. The expression of proteins related to energetics and stress varied by geographic area, while the majority of proteins that were affected by biological attributes (age class, sex and age class by sex interaction) were related to reproduction and stress. This study provides a novel method by which scientists and managers can further assess and monitor physiological function in wildlife.
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Affiliation(s)
- Abbey E Wilson
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, 44 Campus Drive, Saskatoon, Saskatchewan S7N 5B3, Canada
| | - Sarah A Michaud
- The University of Victoria Genome BC Proteomics Centre, 4464 Markham St #3101, Victoria, British Columbia V8Z 7X8, Canada
| | - Angela M Jackson
- The University of Victoria Genome BC Proteomics Centre, 4464 Markham St #3101, Victoria, British Columbia V8Z 7X8, Canada
| | - Gordon Stenhouse
- Foothills Research Institute, Grizzly Bear Program, 1176 Switzer Drive, Hinton, Alberta T7V 1V3, Canada
| | - Nicholas C Coops
- Department of Forest Resource Management, University of British Columbia, 2424 Main Mall, Vancouver, British Columbia V6T 1Z4, Canada
| | - David M Janz
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, 44 Campus Drive, Saskatoon, Saskatchewan S7N 5B3, Canada
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26
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Gastiazoro MP, Durando M, Milesi MM, Lorenz V, Vollmer G, Varayoud J, Zierau O. Glyphosate induces epithelial mesenchymal transition-related changes in human endometrial Ishikawa cells via estrogen receptor pathway. Mol Cell Endocrinol 2020; 510:110841. [PMID: 32360565 DOI: 10.1016/j.mce.2020.110841] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/08/2020] [Accepted: 04/23/2020] [Indexed: 12/16/2022]
Abstract
Glyphosate based herbicides are the most commonly used herbicide in the world. We aimed to determine whether glyphosate (Gly) induces epithelial mesenchymal transition (EMT) - related changes in a human endometrial carcinoma cell line (Ishikawa cells), and whether the estrogen receptor (ER) pathway is involved in these changes. Ishikawa cells were exposed to Gly (0.2 μM and 2 μM) or 17β-estradiol (E2: 10-9 M). We detected that Gly increased cell migration and invasion ability compared to vehicle, as did E2. Moreover, a down regulation of E-cadherin mRNA expression was determined in response to Gly, similar to E2-effects. These results show that Gly promotes EMT-related changes in Ishikawa cells. When an ER antagonist (Fulvestrant: 10-7 M) was co-administrated with Gly, all changes were reversed, suggesting that Gly might promote EMT-related changes via ER-dependent pathway. Our results are interesting evidences of Gly effects on endometrial cancer progression via the ER-dependent pathway.
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Affiliation(s)
- M P Gastiazoro
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina; Institute for Zoology, Molecular Cell Physiology and Endocrinology, Technische Universität Dresden, Dresden, Germany.
| | - M Durando
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina
| | - M M Milesi
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina
| | - V Lorenz
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina
| | - G Vollmer
- Institute for Zoology, Molecular Cell Physiology and Endocrinology, Technische Universität Dresden, Dresden, Germany
| | - J Varayoud
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina
| | - O Zierau
- Institute for Zoology, Molecular Cell Physiology and Endocrinology, Technische Universität Dresden, Dresden, Germany.
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27
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Hao Y, Zhang Y, Cheng J, Xu W, Xu Z, Gao J, Tao L. Adjuvant contributes Roundup's unexpected effects on A549 cells. ENVIRONMENTAL RESEARCH 2020; 184:109306. [PMID: 32120119 DOI: 10.1016/j.envres.2020.109306] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/16/2020] [Accepted: 02/24/2020] [Indexed: 06/10/2023]
Abstract
Roundup® (RDP) is one of the most representative glyphosate-based herbicides (GBHs), which extensive use increases pressure on environmental safety and potential human health risk. The aim of this study was to investigate whether the adjuvant polyethoxylated tallow amine (POEA) or the herbicidal active ingredient glyphosate isopropylamine salt (GP) in formulation confers RDP cytotoxicity. We demonstrated that RDP and POEA could inhibit the proliferation of human lung A549 cells. Intracellular biochemical assay indicated that collapse of mitochondrial membrane, release of cytochrome c into cytosol, activation of caspase-9/-3, cleavage of poly (ADP-ribose) polymerase (PARP), oxidative DNA damage, DNA single-strand breaks and double-strand breaks are occurred in RDP and POEA treated A549 cells, not occurred in GP treated A549 cells. We conclude that the RDP's effect of apoptosis and DNA damage on human A549 cells is related to the presence of adjuvant POEA in formulation, independent of the herbicidal active ingredient GP. This study would enrich the theoretical basis of the RDP toxicity effects and attract attention on potential human health and environmental safety threat caused by adjuvant.
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Affiliation(s)
- Youwu Hao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Yang Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Wenping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Zhiping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Jufang Gao
- College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Liming Tao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
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28
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Pellizzon MA, Ricci MR. Choice of Laboratory Rodent Diet May Confound Data Interpretation and Reproducibility. Curr Dev Nutr 2020; 4:nzaa031. [PMID: 32258990 PMCID: PMC7103427 DOI: 10.1093/cdn/nzaa031] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/21/2020] [Accepted: 03/02/2020] [Indexed: 12/12/2022] Open
Abstract
The reproducibility of experimental data is challenged by many factors in both clinical and preclinical research. In preclinical studies, several factors may be responsible, and diet is one variable that is commonly overlooked, especially by those not trained in nutrition. In particular, grain-based diets contain complex ingredients, each of which can provide multiple nutrients, non-nutrients, and contaminants, which may vary from batch to batch. Thus, even when choosing the same grain-based diet used in the past by others, its composition will likely differ. In contrast, purified diets contain refined ingredients that offer the ability to control the composition much more closely and maintain consistency from one batch to the next, while minimizing the presence of non-nutrients and contaminants. In this article, we provide several different examples or scenarios showing how the diet choice can alter data interpretation, potentially affecting reproducibility and knowledge gained within any given field of study.
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29
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Crump K, Crouch E, Zelterman D, Crump C, Haseman J. Accounting for Multiple Comparisons in Statistical Analysis of the Extensive Bioassay Data on Glyphosate. Toxicol Sci 2020; 175:156-167. [DOI: 10.1093/toxsci/kfaa039] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Glyphosate is a widely used herbicide worldwide. In 2015, the International Agency for Research on Cancer (IARC) reviewed glyphosate cancer bioassays and human studies and declared that the evidence for carcinogenicity of glyphosate is sufficient in experimental animals. We analyzed 10 glyphosate rodent bioassays, including those in which IARC found evidence of carcinogenicity, using a multiresponse permutation procedure that adjusts for the large number of tumors eligible for statistical testing and provides valid false-positive probabilities. The test statistics for these permutation tests are functions of p values from a standard test for dose-response trend applied to each specific type of tumor. We evaluated 3 permutation tests, using as test statistics the smallest p value from a standard statistical test for dose-response trend and the number of such tests for which the p value is less than or equal to .05 or .01. The false-positive probabilities obtained from 2 implementations of these 3 permutation tests are: smallest p value: .26, .17; p values ≤ .05: .08, .12; and p values ≤ .01: .06, .08. In addition, we found more evidence for negative dose-response trends than positive. Thus, we found no strong evidence that glyphosate is an animal carcinogen. The main cause for the discrepancy between IARC’s finding and ours appears to be that IARC did not account for the large number of tumor responses analyzed and the increased likelihood that several of these would show statistical significance simply by chance. This work provides a more comprehensive analysis of the animal carcinogenicity data for this important herbicide than previously available.
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Affiliation(s)
| | | | - Daniel Zelterman
- Biostatistics, Yale School of Public Health, Yale University, New Haven, Connecticut 06520-8034
| | - Casey Crump
- Departments of Family Medicine and Community Health and of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, New York 10029
| | - Joseph Haseman
- J.K. Haseman Consulting, Raleigh, North Carolina 27614-7886
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30
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Regiart M, Kumar A, Gonçalves JM, Silva Junior GJ, Masini JC, Angnes L, Bertotti M. An Electrochemically Synthesized Nanoporous Copper Microsensor for Highly Sensitive and Selective Determination of Glyphosate. ChemElectroChem 2020. [DOI: 10.1002/celc.202000064] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Matias Regiart
- Laboratório de Sensores Eletroquímicos e Métodos Eletroanalíticos Department of Fundamental Chemistry, Institute of Chemistry University of São Paulo Av. Professor Lineu Prestes 748 05513-970 São Paulo – SP Brazil
| | - Abhishek Kumar
- Laboratório de Sensores Eletroquímicos e Métodos Eletroanalíticos Department of Fundamental Chemistry, Institute of Chemistry University of São Paulo Av. Professor Lineu Prestes 748 05513-970 São Paulo – SP Brazil
- Current address: Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB), UMR CNRS 6302 Université Bourgogne Franche-Comté 9 avenue Alain Savary 21078 Dijon cedex France
| | - Josué M. Gonçalves
- Laboratório de Automação e Instrumentação Analítica Department of Fundamental Chemistry, Institute of Chemistry University of São Paulo Av. Professor Lineu Prestes 748 05513-970 São Paulo – SP Brazil
| | - Gilberto J. Silva Junior
- Laboratório de Sensores Eletroquímicos e Métodos Eletroanalíticos Department of Fundamental Chemistry, Institute of Chemistry University of São Paulo Av. Professor Lineu Prestes 748 05513-970 São Paulo – SP Brazil
| | - Jorge César Masini
- Laboratório de Química Analítica Ambiental Department of Fundamental Chemistry, Institute of Chemistry University of São Paulo Av. Professor Lineu Prestes 748 05513-970 São Paulo – SP Brazil
| | - Lúcio Angnes
- Laboratório de Automação e Instrumentação Analítica Department of Fundamental Chemistry, Institute of Chemistry University of São Paulo Av. Professor Lineu Prestes 748 05513-970 São Paulo – SP Brazil
| | - Mauro Bertotti
- Laboratório de Sensores Eletroquímicos e Métodos Eletroanalíticos Department of Fundamental Chemistry, Institute of Chemistry University of São Paulo Av. Professor Lineu Prestes 748 05513-970 São Paulo – SP Brazil
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Portier CJ. A comprehensive analysis of the animal carcinogenicity data for glyphosate from chronic exposure rodent carcinogenicity studies. Environ Health 2020; 19:18. [PMID: 32050978 PMCID: PMC7014589 DOI: 10.1186/s12940-020-00574-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/06/2020] [Indexed: 05/15/2023]
Abstract
Since the introduction of glyphosate-tolerant genetically-modified plants, the global use of glyphosate has increased dramatically making it the most widely used pesticide on the planet. There is considerable controversy concerning the carcinogenicity of glyphosate with scientists and regulatory authorities involved in the review of glyphosate having markedly different opinions. One key aspect of these opinions is the degree to which glyphosate causes cancer in laboratory animals after lifetime exposure. In this review, twenty-one chronic exposure animal carcinogenicity studies of glyphosate are identified from regulatory documents and reviews; 13 studies are of sufficient quality and detail to be reanalyzed in this review using trend tests, historical control tests and pooled analyses. The analyses identify 37 significant tumor findings in these studies and demonstrate consistency across studies in the same sex/species/strain for many of these tumors. Considering analyses of the individual studies, the consistency of the data across studies, the pooled analyses, the historical control data, non-neoplastic lesions, mechanistic evidence and the associated scientific literature, the tumor increases seen in this review are categorized as to the strength of the evidence that glyphosate causes these cancers. The strongest evidence shows that glyphosate causes hemangiosarcomas, kidney tumors and malignant lymphomas in male CD-1 mice, hemangiomas and malignant lymphomas in female CD-1 mice, hemangiomas in female Swiss albino mice, kidney adenomas, liver adenomas, skin keratoacanthomas and skin basal cell tumors in male Sprague-Dawley rats, adrenal cortical carcinomas in female Sprague-Dawley rats and hepatocellular adenomas and skin keratocanthomas in male Wistar rats.
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Affiliation(s)
- Christopher J Portier
- Rollins School of Public Health, Emory University, Atlanta, GA, USA.
- Department of Toxicogenomics, Maastricht University, Maastricht, Netherlands.
- CJP Consulting, Seattle, Washington, USA.
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Caiati C, Pollice P, Favale S, Lepera ME. The Herbicide Glyphosate and Its Apparently Controversial Effect on Human Health: An Updated Clinical Perspective. Endocr Metab Immune Disord Drug Targets 2020; 20:489-505. [PMID: 31613732 DOI: 10.2174/1871530319666191015191614] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND Glyphosate (G) is the most common weed-killer in the world. Every year tons and tons of G are applied on crop fields. G was first introduced in the mid 1970s and since then its usage has gradually increased to reach a peak since 2005. Now G usage is approximately 100 -fold what it was in 1970. Its impact on human health was considered benign at the beginning. But over the years, evidence of a pervasive negative effect of this pesticide on humans has been mounting. Nonetheless, G usage is allowed by government health control agencies (both in the United States and Europe), that rely upon the evidence produced by the G producer. However, the IARC (International Agency for Research on Cancer) in 2015 has stated that G is probable carcinogenic (class 2A), the second highest class in terms of risk. OBJECTIVE In this review, we explore the effect of G on human health, focusing in particular on more recent knowledge. RESULTS We have attempted to untangle the controversy about the dangers of the product for human beings in view of a very recent development, when the so -called Monsanto Papers, consisting of Emails and memos from Monsanto came to light, revealing a coordinated strategy to manipulate the debate about the safety of glyphosate to the company's advantage. CONCLUSION The story of G is a recurrent one (see the tobacco story), that seriously jeopardizes the credibility of the scientific study in the modern era.
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Affiliation(s)
- Carlo Caiati
- Department of Emergency and Organ Transplantation, Unit of Cardiovascular Diseases, University of Bari, Bari, Italy
| | - Paolo Pollice
- Department of Emergency and Organ Transplantation, Unit of Cardiovascular Diseases, University of Bari, Bari, Italy
| | - Stefano Favale
- Department of Emergency and Organ Transplantation, Unit of Cardiovascular Diseases, University of Bari, Bari, Italy
| | - Mario Erminio Lepera
- Department of Emergency and Organ Transplantation, Unit of Cardiovascular Diseases, University of Bari, Bari, Italy
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Zhang L, Rana I, Shaffer RM, Taioli E, Sheppard L. Exposure to glyphosate-based herbicides and risk for non-Hodgkin lymphoma: A meta-analysis and supporting evidence. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2019; 781:186-206. [PMID: 31342895 PMCID: PMC6706269 DOI: 10.1016/j.mrrev.2019.02.001] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 02/02/2019] [Accepted: 02/05/2019] [Indexed: 02/01/2023]
Abstract
Glyphosate is the most widely used broad-spectrum systemic herbicide in the world. Recent evaluations of the carcinogenic potential of glyphosate-based herbicides (GBHs) by various regional, national, and international agencies have engendered controversy. We investigated whether there was an association between high cumulative exposures to GBHs and increased risk of non-Hodgkin lymphoma (NHL) in humans. We conducted a new meta-analysis that includes the most recent update of the Agricultural Health Study (AHS) cohort published in 2018 along with five case-control studies. Using the highest exposure groups when available in each study, we report the overall meta-relative risk (meta-RR) of NHL in GBH-exposed individuals was increased by 41% (meta-RR = 1.41, 95% confidence interval, CI: 1.13-1.75). For comparison, we also performed a secondary meta-analysis using high-exposure groups with the earlier AHS (2005), and we calculated a meta-RR for NHL of 1.45 (95% CI: 1.11-1.91), which was higher than the meta-RRs reported previously. Multiple sensitivity tests conducted to assess the validity of our findings did not reveal meaningful differences from our primary estimated meta-RR. To contextualize our findings of an increased NHL risk in individuals with high GBH exposure, we reviewed publicly available animal and mechanistic studies related to lymphoma. We documented further support from studies of malignant lymphoma incidence in mice treated with pure glyphosate, as well as potential links between glyphosate / GBH exposure and immunosuppression, endocrine disruption, and genetic alterations that are commonly associated with NHL or lymphomagenesis. Overall, in accordance with findings from experimental animal and mechanistic studies, our current meta-analysis of human epidemiological studies suggests a compelling link between exposures to GBHs and increased risk for NHL.
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Affiliation(s)
- Luoping Zhang
- Division of Environmental Health Sciences, School of Public Health, University of California Berkeley, Berkeley, USA.
| | - Iemaan Rana
- Division of Environmental Health Sciences, School of Public Health, University of California Berkeley, Berkeley, USA
| | - Rachel M Shaffer
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, USA
| | - Emanuela Taioli
- Institute for Translational Epidemiology and Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Lianne Sheppard
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, USA; Department of Biostatistics, University of Washington, Seattle, USA
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Cantini F, Castelli G, Foderi C, Salazar Garcia A, López de Armentia T, Bresci E, Salbitano F. Evidence-Based Integrated Analysis of Environmental Hazards in Southern Bolivia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16122107. [PMID: 31207875 PMCID: PMC6616499 DOI: 10.3390/ijerph16122107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/07/2019] [Accepted: 06/13/2019] [Indexed: 11/16/2022]
Abstract
The “Valles Cruceños” rural region plays a fundamental role for securing food and other resources for the neighboring, and fast sprawling, city of Santa Cruz de la Sierra (Bolivia). Due to the increasing pressure on its natural resources, the region is affected by progressive and severe environmental degradation, as many other rural regions in South and Central America. In this situation, sound policies and governance for sustainable land management are weak and not supported by data and scientific research outputs. With the present study, we aim at developing a novel and practical integrated hazard analysis methodology, supporting the evidence-based understanding of hazard patterns and informing risk assessment processes in the urban-rural continuum. Firstly, the main environmental hazards affecting the area were identified via questionnaire campaigns, held by the staff of local municipalities. Focusing on the hazards mostly perceived by the inhabitants of the region, including deforestation, water pollution and precipitation changes, hazard maps were created by using multiple environmental hazards indicators. An integrated hazard map was then built in a GIS environment, after a pair-wise comparison process. The maps represent a first baseline for the analysis of the present status of natural resources in “Valles Cruceños” area, and the proposed approach can be scaled up for integrated environmental hazards analysis in similar areas of Latin America.
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Affiliation(s)
- Francesco Cantini
- Department of Agriculture, Food, Environment and Forestry (DAGRI), Università degli Studi di Firenze, 50145 Firenze, Italy.
| | - Giulio Castelli
- Department of Agriculture, Food, Environment and Forestry (DAGRI), Università degli Studi di Firenze, 50145 Firenze, Italy.
| | - Cristiano Foderi
- Department of Agriculture, Food, Environment and Forestry (DAGRI), Università degli Studi di Firenze, 50145 Firenze, Italy.
| | | | | | - Elena Bresci
- Department of Agriculture, Food, Environment and Forestry (DAGRI), Università degli Studi di Firenze, 50145 Firenze, Italy.
| | - Fabio Salbitano
- Department of Agriculture, Food, Environment and Forestry (DAGRI), Università degli Studi di Firenze, 50145 Firenze, Italy.
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Mesnage R, Benbrook C, Antoniou MN. Insight into the confusion over surfactant co-formulants in glyphosate-based herbicides. Food Chem Toxicol 2019; 128:137-145. [PMID: 30951798 DOI: 10.1016/j.fct.2019.03.053] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/04/2019] [Accepted: 03/28/2019] [Indexed: 12/25/2022]
Abstract
Glyphosate is the active ingredient in glyphosate-based herbicides (GBHs). Other chemicals in GBHs are presumed as inert by regulatory authorities and are largely ignored in pesticide safety evaluations. We identified the surfactants in a cross-section of GBH formulations and compared their acute toxic effects. The first generation of polyethoxylated amine (POEA) surfactants (POE-tallowamine) in Roundup are markedly more toxic than glyphosate and heightened concerns of risks to human health, especially among heavily-exposed applicators. Beginning in the mid-1990s, first-generation POEAs were progressively replaced by other POEA surfactants, ethoxylated etheramines, which exhibited lower non-target toxic effects. Lingering concern over surfactant toxicity was mitigated at least in part within the European Union by the introduction of propoxylated quaternary ammonium surfactants. This class of POEA surfactants are ∼100 times less toxic to aquatic ecosystems and human cells than previous GBH-POEA surfactants. As GBH composition is legally classified as confidential commercial information, confusion concerning the identity and concentrations of co-formulants is common and descriptions of test substances in published studies are often erroneous or incomplete. In order to resolve this confusion, laws requiring disclosure of the chemical composition of pesticide products could be enacted. Research to understand health implications from ingesting these substances is required.
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Affiliation(s)
- Robin Mesnage
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, 8th Floor, Tower Wing, Guy's Hospital, Great Maze Pond, London, SE1 9RT, UK.
| | - Charles Benbrook
- Newcastle University, Newcastle, UK; Benbrook Consulting Services, Enterprise, Oregon, USA
| | - Michael N Antoniou
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, 8th Floor, Tower Wing, Guy's Hospital, Great Maze Pond, London, SE1 9RT, UK
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Paumgartten FJR. To be or not to be a carcinogen; delving into the glyphosate classification controversy. BRAZ J PHARM SCI 2019. [DOI: 10.1590/s2175-97902019000118217] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Upadhyay J, Rana M, Bisht SS, Rana A, Durgapal S, Juyal V. Biomarker responses (serum biochemistry) in pregnant female wistar rats and histopathology of their neonates exposed prenatally to pesticides. BRAZ J PHARM SCI 2019. [DOI: 10.1590/s2175-97902019000118194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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38
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Riaño-Quintero C, Gómez-Ramírez E, Hurtado-Giraldo H. Glyphosate commercial formulation effects on preoptic area and hypothalamus of Cardinal Neon Paracheirodon axelrodi (Characiformes: Characidae). NEOTROPICAL ICHTHYOLOGY 2019. [DOI: 10.1590/1982-0224-20190025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT In Colombia the use of glyphosate commercial formulations (Roundup™) for spraying have left deleterious effects on animals and humans. Much of this spraying takes place at the Orinoco basin, habitat of one of the most exported ornamental fish in Colombia, Cardinal neon. To evaluate the effect of Roundup Activo™ four experimental treatments were carried out with 0 mg/L (T1), 0.1 mg/L (T2), 1 mg/L (T3) and 5 mg/L (T4) during 30 days of exposure. The fishes were processed for high-resolution optical microscopy. The main finding of Roundup Activo™ exposure was an increase in mast cells number in brain blood vessels and some neuronal nuclei of the preoptic and posterior diencephalic areas, including hypothalamus. A correlation between concentrations and mast cells number was observed, with the largest mast cells number in T4 treatment. Mast cells presence is a stress benchmark, suggesting the beginning of allergic, inflammatory and apoptotic events. Presence of mast cells in these brain areas may lead to alterations on reproduction, visual and olfactory information integration among other processes. These alterations may result in diminished survival, affecting the conservation of this species in its natural habitat.
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Ma NL, Kadir NA, Nordin MMA, Tan SH, Lam SS. Progress and Challenges of Detecting Biomarkers for the Development of Pesticide Biosensor in Rice Plants. ADVANCES IN RICE RESEARCH FOR ABIOTIC STRESS TOLERANCE 2019:821-838. [DOI: 10.1016/b978-0-12-814332-2.00041-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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40
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Santovito A, Ruberto S, Gendusa C, Cervella P. In vitro evaluation of genomic damage induced by glyphosate on human lymphocytes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:34693-34700. [PMID: 30324367 DOI: 10.1007/s11356-018-3417-9] [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: 05/29/2018] [Accepted: 10/08/2018] [Indexed: 06/08/2023]
Abstract
Glyphosate is an important broad-spectrum herbicide used in agriculture and residential areas for weed and vegetation control, respectively. In our study, we analyzed the in vitro clastogenic and/or aneugenic effects of glyphosate by chromosomal aberrations and micronuclei assays. Human lymphocytes were exposed to five glyphosate concentrations: 0.500, 0.100, 0.050, 0.025, and 0.0125 μg/mL, where 0.500 μg/mL represents the established acceptable daily intake value, and the other concentrations were tested in order to establish the genotoxicity threshold for this compound. We observed that chromosomal aberration (CA) and micronuclei (MNi) frequencies significantly increased at all tested concentrations, with exception of 0.0125 μg/mL. Vice versa, no effect has been observed on the frequencies of nuclear buds and nucleoplasmic bridges, with the only exception of 0.500 μg/mL of glyphosate that was found to increase in a significant manner the frequency of nucleoplasmic bridges. Finally, the cytokinesis-block proliferation index and the mitotic index were not significantly reduced, indicating that glyphosate does not produce effects on the proliferation/mitotic index at the tested concentrations.
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Affiliation(s)
- Alfredo Santovito
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123, Torino, Italy.
| | - Stefano Ruberto
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123, Torino, Italy
| | - Claudio Gendusa
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123, Torino, Italy
| | - Piero Cervella
- University of Turin, Department of Life Sciences and Systems Biology, Via Accademia Albertina n. 13, 10123, Torino, Italy
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41
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Wrobel MH. Glyphosate affects the secretion of regulators of uterine contractions in cows while it does not directly impair the motoric function of myometrium in vitro. Toxicol Appl Pharmacol 2018; 349:55-61. [PMID: 29705296 DOI: 10.1016/j.taap.2018.04.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 04/19/2018] [Accepted: 04/24/2018] [Indexed: 01/06/2023]
Abstract
The effects of pure glyphosate and its most popular product (brand name: Roundup) on the secretion of hormones involved in the regulation of myometrial contractions as well as their direct effects on myometrial contractions were examined. Myometrial strips as well as uterine and ovarian cells were taken from cows during the oestrous cycle and they were treated with both compounds at concentrations from their environmental range. Glyphosate stimulated the secretion of oestradiol from granulosa cells while both herbicides increased and decreased oxytocin (OT) and progesterone secretion from luteal cells respectively. However only Roundup stimulated mRNA expression of the precursor of OT. Both compounds decreased the secretion of prostaglandins from endometrial cells while they exerted no effect on the basal and OT-stimulated force of myometrial contractions. The studied herbicides did not directly impair the motoric function of the myometrium. However our data indicate the potential of these compounds to disturb the secretory functions of the ovaries and uterus which can lead to the deregulation of uterine contractions and to the impairment of fertilisation or to difficulties in the maintenance of gestation.
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Affiliation(s)
- Michael Hubert Wrobel
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima Street 10, 10-748 Olsztyn, Poland.
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Fartyal D, Agarwal A, James D, Borphukan B, Ram B, Sheri V, Yadav R, Manna M, Varakumar P, Achary VMM, Reddy MK. Co-expression of P173S Mutant Rice EPSPS and igrA Genes Results in Higher Glyphosate Tolerance in Transgenic Rice. FRONTIERS IN PLANT SCIENCE 2018; 9:144. [PMID: 29487608 PMCID: PMC5816812 DOI: 10.3389/fpls.2018.00144] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 01/25/2018] [Indexed: 05/11/2023]
Abstract
Weeds and their devastating effects have been a great threat since the start of agriculture. They compete with crop plants in the field and negatively influence the crop yield quality and quantity along with survival of the plants. Glyphosate is an important broad-spectrum systemic herbicide which has been widely used to combat various weed problems since last two decades. It is very effective even at low concentrations, and possesses low environmental toxicity and soil residual activity. However, the residual concentration of glyphosate inside the plant has been of major concern as it severely affects the important metabolic pathways, and results in poor plant growth and grain yield. In this study, we compared the glyphosate tolerance efficiency of two different transgenic groups over expressing proline/173/serine (P173S) rice EPSPS glyphosate tolerant mutant gene (OsmEPSPS) alone and in combination with the glyphosate detoxifying encoding igrA gene, recently characterized from Pseudomonas. The molecular analysis of all transgenic plant lines showed a stable integration of transgenes and their active expression in foliar tissues. The physiological analysis of glyphosate treated transgenic lines at seed germination and vegetative stages showed a significant difference in glyphosate tolerance between the two transgenic groups. The transgenic plants with OsmEPSPS and igrA genes, representing dual glyphosate tolerance mechanisms, showed an improved root-shoot growth, physiology, overall phenotype and higher level of glyphosate tolerance compared to the OsmEPSPS transgenic plants. This study highlights the advantage of igrA led detoxification mechanism as a crucial component of glyphosate tolerance strategy in combination with glyphosate tolerant OsmEPSPS gene, which offered a better option to tackle in vivo glyphosate accumulation and imparted more robust glyphosate tolerance in rice transgenic plants.
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Affiliation(s)
- Dhirendra Fartyal
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
- Department of Biotechnology, Uttarakhand Technical University, Dehradun, India
| | - Aakrati Agarwal
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
- Plant Molecular Biology Lab, Department of Botany, University of Delhi, New Delhi, India
| | - Donald James
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Bhabesh Borphukan
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Babu Ram
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
- Department of Biotechnology, Uttarakhand Technical University, Dehradun, India
| | - Vijay Sheri
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Renu Yadav
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Mrinalini Manna
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Panditi Varakumar
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - V. Mohan M. Achary
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Malireddy K. Reddy
- Crop Improvement Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
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Liang C, Sun B, Meng Z, Meng Z, Wang Y, Sun G, Zhu T, Lu W, Zhang W, Malik W, Lin M, Zhang R, Guo S. Co-expression of GR79 EPSPS and GAT yields herbicide-resistant cotton with low glyphosate residues. PLANT BIOTECHNOLOGY JOURNAL 2017; 15:1622-1629. [PMID: 28418615 PMCID: PMC5698046 DOI: 10.1111/pbi.12744] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 04/11/2017] [Accepted: 04/11/2017] [Indexed: 05/22/2023]
Abstract
Glyphosate-resistant (GR) crops have been adopted on a massive scale by North and South American farmers. Currently, about 80% of the 120 million hectares of the global genetically modified (GM) crops are GR crop varieties. However, the adoption of GR plants in China has not occurred at the same pace, owing to several factors including, among other things, labour markets and the residual effects of glyphosate in transgenic plants. Here, we report the co-expression of codon-optimized forms of GR79 EPSPS and N-acetyltransferase (GAT) genes in cotton. We found five times more resistance to glyphosate with 10-fold reduction in glyphosate residues in two pGR79 EPSPS-pGAT co-expression cotton lines, GGCO2 and GGCO5. The GGCO2 line was used in a hybridization programme to develop new GR cottons. Field trials at five locations during three growing seasons showed that pGR79-pGAT transgenic cotton lines have the same agronomic performance as conventional varieties, but were USD 390-495 cheaper to produce per hectare because of the high cost of conventional weed management practices. Our strategy to pyramid these genes clearly worked and thus offers attractive promise for the engineering and breeding of highly resistant low-glyphosate-residue cotton varieties.
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Affiliation(s)
- Chengzhen Liang
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Bao Sun
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Zhigang Meng
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Zhaohong Meng
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Yuan Wang
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Guoqing Sun
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Tao Zhu
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Wei Lu
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Wei Zhang
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Waqas Malik
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
- Department of Plant Breeding and GeneticsBahauddin Zakariya UniversityMultanPakistan
| | - Min Lin
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Rui Zhang
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
| | - Sandui Guo
- Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijingChina
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Kaltenhäuser J, Kneuer C, Marx-Stoelting P, Niemann L, Schubert J, Stein B, Solecki R. Relevance and reliability of experimental data in human health risk assessment of pesticides. Regul Toxicol Pharmacol 2017; 88:227-237. [DOI: 10.1016/j.yrtph.2017.06.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 06/19/2017] [Accepted: 06/22/2017] [Indexed: 11/29/2022]
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45
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Tarazona JV, Court-Marques D, Tiramani M, Reich H, Pfeil R, Istace F, Crivellente F. Glyphosate toxicity and carcinogenicity: a review of the scientific basis of the European Union assessment and its differences with IARC. Arch Toxicol 2017; 91:2723-2743. [PMID: 28374158 PMCID: PMC5515989 DOI: 10.1007/s00204-017-1962-5] [Citation(s) in RCA: 189] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 03/21/2017] [Indexed: 11/29/2022]
Abstract
Glyphosate is the most widely used herbicide worldwide. It is a broad spectrum herbicide and its agricultural uses increased considerably after the development of glyphosate-resistant genetically modified (GM) varieties. Since glyphosate was introduced in 1974, all regulatory assessments have established that glyphosate has low hazard potential to mammals, however, the International Agency for Research on Cancer (IARC) concluded in March 2015 that it is probably carcinogenic. The IARC conclusion was not confirmed by the EU assessment or the recent joint WHO/FAO evaluation, both using additional evidence. Glyphosate is not the first topic of disagreement between IARC and regulatory evaluations, but has received greater attention. This review presents the scientific basis of the glyphosate health assessment conducted within the European Union (EU) renewal process, and explains the differences in the carcinogenicity assessment with IARC. Use of different data sets, particularly on long-term toxicity/carcinogenicity in rodents, could partially explain the divergent views; but methodological differences in the evaluation of the available evidence have been identified. The EU assessment did not identify a carcinogenicity hazard, revised the toxicological profile proposing new toxicological reference values, and conducted a risk assessment for some representatives uses. Two complementary exposure assessments, human-biomonitoring and food-residues-monitoring, suggests that actual exposure levels are below these reference values and do not represent a public concern.
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Affiliation(s)
- Jose V Tarazona
- Pesticides Unit, European Food Safety Authority, Via Carlo Magno 1/A, 43126, Parma, Italy.
| | - Daniele Court-Marques
- Pesticides Unit, European Food Safety Authority, Via Carlo Magno 1/A, 43126, Parma, Italy
| | - Manuela Tiramani
- Pesticides Unit, European Food Safety Authority, Via Carlo Magno 1/A, 43126, Parma, Italy
| | - Hermine Reich
- Pesticides Unit, European Food Safety Authority, Via Carlo Magno 1/A, 43126, Parma, Italy
| | - Rudolf Pfeil
- Federal Institute for Risk Assessment (BfR), Berlin, Germany
| | - Frederique Istace
- Pesticides Unit, European Food Safety Authority, Via Carlo Magno 1/A, 43126, Parma, Italy
| | - Federica Crivellente
- Pesticides Unit, European Food Safety Authority, Via Carlo Magno 1/A, 43126, Parma, Italy
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Bus JS. IARC use of oxidative stress as key mode of action characteristic for facilitating cancer classification: Glyphosate case example illustrating a lack of robustness in interpretative implementation. Regul Toxicol Pharmacol 2017; 86:157-166. [PMID: 28274811 DOI: 10.1016/j.yrtph.2017.03.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 02/28/2017] [Accepted: 03/02/2017] [Indexed: 11/27/2022]
Abstract
The International Agency for Research on Cancer (IARC) has formulated 10 key characteristics of human carcinogens to incorporate mechanistic data into cancer hazard classifications. The analysis used glyphosate as a case example to examine the robustness of IARC's determination of oxidative stress as "strong" evidence supporting a plausible cancer mechanism in humans. The IARC analysis primarily relied on 14 human/mammalian studies; 19 non-mammalian studies were uninformative of human cancer given the broad spectrum of test species and extensive use of formulations and aquatic testing. The mammalian studies had substantial experimental limitations for informing cancer mechanism including use of: single doses and time points; cytotoxic/toxic test doses; tissues not identified as potential cancer targets; glyphosate formulations or mixtures; technically limited oxidative stress biomarkers. The doses were many orders of magnitude higher than human exposures determined in human biomonitoring studies. The glyphosate case example reveals that the IARC evaluation fell substantially short of "strong" supporting evidence of oxidative stress as a plausible human cancer mechanism, and suggests that other IARC monographs relying on the 10 key characteristics approach should be similarly examined for a lack of robust data integration fundamental to reasonable mode of action evaluations.
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Affiliation(s)
- James S Bus
- Exponent, Inc., 1800 Diagonal Road, Suite 500, Alexandria, VA 22314, United States.
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47
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Padilla-Alonso DJ, Garza-Tapia M, Chávez-Montes A, González-Horta A, Waksman de Torres NH, Castro-Ríos R. New temperature-assisted ionic liquid-based dispersive liquid–liquid microextraction method for the determination of glyphosate and aminomethylphosphonic acid in water samples. J LIQ CHROMATOGR R T 2017. [DOI: 10.1080/10826076.2017.1295057] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Daniela J. Padilla-Alonso
- Departamento de Química Analítica, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, México
| | - Marsela Garza-Tapia
- Departamento de Química Analítica, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, México
| | - Abelardo Chávez-Montes
- Departamento de Química, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, México
| | - Azucena González-Horta
- Departamento de Química, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, México
| | - Noemí H. Waksman de Torres
- Departamento de Química Analítica, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, México
| | - Rocío Castro-Ríos
- Departamento de Química Analítica, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, México
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48
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Guerrero Schimpf M, Milesi MM, Ingaramo PI, Luque EH, Varayoud J. Neonatal exposure to a glyphosate based herbicide alters the development of the rat uterus. Toxicology 2017; 376:2-14. [PMID: 27287056 DOI: 10.1016/j.tox.2016.06.004] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 05/26/2016] [Accepted: 06/06/2016] [Indexed: 02/06/2023]
Abstract
Glyphosate-based herbicides (GBHs) are extensively used to control weeds on both cropland and non-cropland areas. No reports are available regarding the effects of GBHs exposure on uterine development. We evaluated if neonatal exposure to a GBH affects uterine morphology, proliferation and expression of proteins that regulate uterine organogenetic differentiation in rats. Female Wistar pups received saline solution (control, C) or a commercial formulation of glyphosate (GBH, 2mg/kg) by sc injection every 48h from postnatal day (PND) 1 to PND7. Rats were sacrificed on PND8 (neonatal period) and PND21 (prepubertal period) to evaluate acute and short-term effects, respectively. The uterine morphology was evaluated in hematoxylin and eosin stained sections. The epithelial and stromal immunophenotypes were established by assessing the expression of luminal epithelial protein (cytokeratin 8; CK8), basal epithelial proteins (p63 and pan cytokeratin CK1, 5, 10 and 14); and vimentin by immunohistochemistry (IHC). To investigate changes on proteins that regulate uterine organogenetic differentiation we evaluated the expression of estrogen receptor alpha (ERα), progesterone receptor (PR), Hoxa10 and Wnt7a by IHC. The GBH-exposed uteri showed morphological changes, characterized by an increase in the incidence of luminal epithelial hyperplasia (LEH) and an increase in the stromal and myometrial thickness. The epithelial cells showed a positive immunostaining for CK8, while the stromal cells for vimentin. GBH treatment increased cell proliferation in the luminal and stromal compartment on PND8, without changes on PND21. GBH treatment also altered the expression of proteins involved in uterine organogenetic differentiation. PR and Hoxa10 were deregulated both immediately and two weeks after the exposure. ERα was induced in the stromal compartment on PND8, and was downregulated in the luminal epithelial cells of gyphosate-exposed animals on PND21. GBH treatment also increased the expression of Wnt7a in the stromal and glandular epithelial cells on PND21. Neonatal exposure to GBH disrupts the postnatal uterine development at the neonatal and prepubertal period. All these changes may alter the functional differentiation of the uterus, affecting the female fertility and/or promoting the development of neoplasias.
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Affiliation(s)
- Marlise Guerrero Schimpf
- Instituto de Salud y Ambiente del Litoral, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, Santa Fe, Argentina
| | - María M Milesi
- Instituto de Salud y Ambiente del Litoral, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, Santa Fe, Argentina
| | - Paola I Ingaramo
- Instituto de Salud y Ambiente del Litoral, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, Santa Fe, Argentina
| | - Enrique H Luque
- Instituto de Salud y Ambiente del Litoral, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, Santa Fe, Argentina
| | - Jorgelina Varayoud
- Instituto de Salud y Ambiente del Litoral, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, Santa Fe, Argentina.
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Buehler R, Bosco L, Arlettaz R, Jacot A. Nest site preferences of the Woodlark (Lullula arborea) and its association with artificial nest predation. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 2017. [DOI: 10.1016/j.actao.2016.12.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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50
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Suman S, Mishra S, Shukla Y. Toxicoproteomics in human health and disease: an update. Expert Rev Proteomics 2016; 13:1073-1089. [DOI: 10.1080/14789450.2016.1252676] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shankar Suman
- Proteomics and Environmental Carcinogenesis Laboratory, Food, Drug and Chemical Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Lucknow, India
| | - Sanjay Mishra
- Proteomics and Environmental Carcinogenesis Laboratory, Food, Drug and Chemical Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Lucknow, India
| | - Yogeshwer Shukla
- Proteomics and Environmental Carcinogenesis Laboratory, Food, Drug and Chemical Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Lucknow, India
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