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Fandiño-Del-Rio M, Tore G, Peng RD, Meeker JD, Matsui EC, Quirós-Alcalá L. Characterization of pesticide exposures and their associations with asthma morbidity in a predominantly low-income urban pediatric cohort in Baltimore City. ENVIRONMENTAL RESEARCH 2024; 263:120096. [PMID: 39362457 DOI: 10.1016/j.envres.2024.120096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2024] [Revised: 09/30/2024] [Accepted: 10/01/2024] [Indexed: 10/05/2024]
Abstract
BACKGROUND Pesticides may impact respiratory health, yet evidence of their impact on pediatric asthma morbidity is limited, particularly among urban children. OBJECTIVE To characterize pesticide biomarker concentrations and evaluate their associations with pediatric asthma morbidity among predominantly low-income, Black children in Baltimore City, USA. METHODS We measured urinary concentrations of 10 biomarkers for pyrethroid insecticides (cyfluthrin:4F-3PBA, permethrin:3PBA), organophosphate insecticides (chlorpyrifos:TCPY, malathion:MDA, parathion:PNP, diazinon:IMPY), and herbicides (glyphosate:AMPA, GPS; 2,4-dicholorphenoxyacetic acid:2,4-D; 2,4,5-tricholorphenoxyacetic acid:2,4,5-T) among 148 children (5-17 years) with established asthma. Urine samples and asthma morbidity measures (asthma symptoms, healthcare utilization, lung function and inflammation) were collected every three months for a year. Generalized estimating equations were used to examine associations between pesticide biomarker concentrations and asthma morbidity measures, controlling for age, sex, race, caregiver education, season, and environmental tobacco smoke. In sensitivity analyses, we assessed the robustness of our results after accounting for environmental co-exposures. RESULTS Frequently detected (≥90% detection) pesticide biomarker concentrations (IMPY, 3PBA, PNP, TCPY, AMPA, GPS) varied considerably within children over the follow-up period (intraclass correlation coefficients: 0.1-0.2). Consistent positive significant associations were observed between the chlorpyrifos biomarker, TCPY, and asthma symptoms. Urinary concentrations of TCPY were associated with increased odds of coughing, wheezing, or chest tightness (adjusted Odds Ratio, aOR, TCPY:1.60, 95% Confidence Interval, CI:1.17-2.18). Urinary concentrations of TCPY were also associated with maximal symptom days (aOR:1.38, CI:1.02-1.86), exercise-related symptoms (aOR:1.63, CI:1.09-2.44), and hospitalizations for asthma (aOR:2.84, CI:1.08-7.43). We did not observe consistent evidence of associations between the pesticide exposures assessed and lung function or inflammation measures. CONCLUSION Among predominantly Black children with asthma, we found evidence that chlorpyrifos is associated with asthma morbidity. Further research is needed to assess the contribution of pesticide exposures to pediatric respiratory health and characterize exposure sources among vulnerable populations to inform targeted interventions against potentially harmful pesticide exposures.
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Affiliation(s)
- Magdalena Fandiño-Del-Rio
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA.
| | - Grant Tore
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA.
| | - Roger D Peng
- Department of Statistics and Data Sciences, University of Texas, Austin, TX, USA.
| | - John D Meeker
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA.
| | | | - Lesliam Quirós-Alcalá
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA.
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2
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Ornelas Van Horne Y, Johnston JE, Barahona DD, Razafy M, Kamai EM, Ruiz BC, Eckel SP, Bejarano E, Olmedo L, Farzan SF. Exposure to agricultural pesticides and wheezing among 5-12-year-old children in the Imperial Valley, CA, USA. Environ Epidemiol 2024; 8:e325. [PMID: 39165346 PMCID: PMC11335338 DOI: 10.1097/ee9.0000000000000325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 07/12/2024] [Indexed: 08/22/2024] Open
Abstract
Background Exposure to pesticides has been linked to adverse respiratory health outcomes in children. Methods We leveraged the Children's Assessing Imperial Valley Respiratory Health and the Environment cohort located in the rural community of Imperial Valley near the US-Mexico border. We calculated the kilograms of total pesticides applied within 400 m of children's residential addresses for the years 2016-2020. Estimated pesticide usage near homes was categorized into three groups (none vs. low vs. high [split at the median]). All health variables (i.e., asthma status and wheezing) were derived from a parent-reported questionnaire on respiratory health. We used generalized linear models, controlling for child sex, the language of survey, health insurance, respondents' highest education, and exposure to environmental secondhand smoking, to calculate prevalence differences between none versus low and high exposure to agricultural pesticides. Results Approximately 62% of the 708 children (aged 5-12 years) lived within 400 m of at least one pesticide application within 12 months prior to survey administration. Exposure to pesticides within 400 m of children's residences was associated with 12-month prior wheeze. Those in the "high" exposure group had a prevalence of wheezing that was 10 (95% confidence interval: 2%, 17%) percentage points higher than among children not exposed to pesticide applications. Associations for high exposure to specific categories of pesticide applications, sulfur only, all pesticides except sulfur, chlorpyrifos, and glyphosate, also were observed with a higher prevalence of wheezing than among children not exposed to pesticide applications. Conclusions We observed associations between living near pesticide applications and more wheeze symptoms among children.
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Affiliation(s)
- Yoshira Ornelas Van Horne
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York City, New York
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Jill E. Johnston
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Dayane Duenas Barahona
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Mitiasoa Razafy
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Elizabeth M. Kamai
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Brandyn C. Ruiz
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Sandrah P. Eckel
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
| | | | - Luis Olmedo
- Comite Civico Del Valle, Brawley, California
| | - Shohreh F. Farzan
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California
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Duan T, Alim A, Tian H, Li T. Roundup-Induced Gut Dysbiosis, Irrelevant to Aromatic Amino Acid Deficiency, Impairs the Gut Function in Rats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 39302074 DOI: 10.1021/acs.jafc.4c04045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
Glyphosate, the most popular herbicide globally, has long been considered safe for mammals. However, whether glyphosate can disturb gut microbiota via inhibiting aromatic amino acid (AAA) synthesis has been under debate recently. Here, we evaluated the impacts of chronic exposure to Roundup on gut health with the addition of AAA and explored the mechanism behind Roundup-induced gut dysfunction by performing fecal microbiota transplantation. 500 mg/kg·bw of Roundup, independent of AAA deficiency, caused severe damage to gut function, as characterized by gut microbial dysbiosis, oxidative stress damage, intestinal inflammation, and histopathological injury, particularly in female rats. Notably, similar to Roundup, Roundup-shaped gut microbiome evidently damaged serum, cecum, and colon profiling of oxidative stress biomarkers (malonaldehyde (MDA), glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), glutathione (GSH), and H2O2). Moreover, it induced 0.65-, 3.29-, and 2.36-fold increases in colonic IL-1β, IL-6, and TNF-α levels, and 0.34-fold decreases in the IL-10 level. Upon transplanting healthy fecal microbiota to Roundup-treated rats, they exhibited a healthier gut microenvironment with mitigated inflammation, oxidative damage, and intestinal injury. Overall, our findings provide new insights into the safety of Roundup, highlight the crucial role of gut microbiota in Roundup-induced gut dysfunction, and pave the way for developing gut-microbiota-based strategies to address Roundup-related safety issues.
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Affiliation(s)
- Tianchi Duan
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
| | - Aamina Alim
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
| | - Honglei Tian
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
| | - Ting Li
- Shaanxi Engineering Laboratory for Food Green Processing and Safety Control, and Shaanxi Key Laboratory for Hazard Factors Assessment in Processing and Storage of Agricultural Products, College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
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Galli FS, Mollari M, Tassinari V, Alimonti C, Ubaldi A, Cuva C, Marcoccia D. Overview of human health effects related to glyphosate exposure. FRONTIERS IN TOXICOLOGY 2024; 6:1474792. [PMID: 39359637 PMCID: PMC11445186 DOI: 10.3389/ftox.2024.1474792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2024] [Accepted: 09/06/2024] [Indexed: 10/04/2024] Open
Abstract
Glyphosate is a chemical compound derived from glycine, marketed as a broad-spectrum herbicide, and represents one of the most widely used pesticides in the world. For a long time, it was assumed that glyphosate was harmless, either due to its selective enzymatic acting method on plants, and because commercial formulations were believed to contain only inert chemicals. Glyphosate is widely spread in the environment, the general population is daily exposed to it via different routes, including the consumption of both plant, and non-plant based foods. Glyphosate has been detected in high amounts in workers' urine, but has been detected likewise in bodily fluids, such as blood and maternal milk, and also in 60%-80% of general population, including children. Considering its massive presence, daily exposure to glyphosate could be considered a health risk for humans. Indeed, in 2015, the IARC (International Agency for Research on Cancer) classified glyphosate and its derivatives in Group 2A, as probable human carcinogens. In 2022, nevertheless, EFSA (European Food Safety Authority) stated that the available data did not provide sufficient evidence to prove the mutagenic/carcinogenic effects of glyphosate. Therefore, the European Commission (EC) decided to renew the approval of glyphosate for another 10 years. The purpose of this review is to examine the scientific literature, focusing on potential risks to human health arising from exposure to glyphosate, its metabolites and its commercial products (e.g., Roundup®), with particular regard to its mutagenic and carcinogenic potential and its effects as endocrine disrupter (ED) especially in the human reproductive system.
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Affiliation(s)
- Flavia Silvia Galli
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Rome, Italy
| | - Marta Mollari
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Rome, Italy
| | - Valentina Tassinari
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Cristian Alimonti
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Rome, Italy
| | - Alessandro Ubaldi
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Rome, Italy
| | - Camilla Cuva
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Rome, Italy
| | - Daniele Marcoccia
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana "M. Aleandri", Rome, Italy
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Mazuryk J, Klepacka K, Kutner W, Sharma PS. Glyphosate: Hepatotoxicity, Nephrotoxicity, Hemotoxicity, Carcinogenicity, and Clinical Cases of Endocrine, Reproductive, Cardiovascular, and Pulmonary System Intoxication. ACS Pharmacol Transl Sci 2024; 7:1205-1236. [PMID: 38751624 PMCID: PMC11092036 DOI: 10.1021/acsptsci.4c00046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/19/2024] [Accepted: 03/21/2024] [Indexed: 05/18/2024]
Abstract
Glyphosate (GLP) is an active agent of GLP-based herbicides (GBHs), i.e., broad-spectrum and postemergent weedkillers, commercialized by Monsanto as, e.g., Roundup and RangerPro formulants. The GBH crop spraying, dedicated to genetically engineered GLP-resistant crops, has revolutionized modern agriculture by increasing the production yield. However, abusively administered GBHs' ingredients, e.g., GLP, polyoxyethyleneamine, and heavy metals, have polluted environmental and industrial areas far beyond farmlands, causing global contamination and life-threatening risk, which has led to the recent local bans of GBH use. Moreover, preclinical and clinical reports have demonstrated harmful impacts of GLP and other GBH ingredients on the gut microbiome, gastrointestinal tract, liver, kidney, and endocrine, as well as reproductive, and cardiopulmonary systems, whereas carcinogenicity of these herbicides remains controversial. Occupational exposure to GBH dysregulates the hypothalamic-pituitary-adrenal axis, responsible for steroidogenesis and endocrinal secretion, thus affecting hormonal homeostasis, functions of reproductive organs, and fertility. On the other hand, acute intoxication with GBH, characterized by dehydration, oliguria, paralytic ileus, as well as hypovolemic and cardiogenic shock, pulmonary edema, hyperkalemia, and metabolic acidosis, may occur fatally. As no antidote has been developed for GBH poisoning so far, the detoxification is mainly symptomatic and supportive and requires intensive care based on gastric lavage, extracorporeal blood filtering, and intravenous lipid emulsion infusion. The current review comprehensively discusses the molecular and physiological basics of the GLP- and/or GBH-induced diseases of the endocrine and reproductive systems, and cardiopulmonary-, nephro-, and hepatotoxicities, presented in recent preclinical studies and case reports on the accidental or intentional ingestions with the most popular GBHs. Finally, they briefly describe modern and future healthcare methods and tools for GLP detection, determination, and detoxification. Future electronically powered, decision-making, and user-friendly devices targeting major GLP/GBH's modes of actions, i.e., dysbiosis and the inhibition of AChE, shall enable self-handled or point-of-care professional-assisted evaluation of the harm followed with rapid capturing GBH xenobiotics in the body and precise determining the GBH pathology-associated biomarkers levels.
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Affiliation(s)
- Jarosław Mazuryk
- Department
of Electrode Processes, Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
- Bio
& Soft Matter, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium
| | - Katarzyna Klepacka
- ENSEMBLE sp. z o. o., 01-919 Warsaw, Poland
- Faculty
of Mathematics and Natural Sciences. School of Sciences, Cardinal Stefan Wyszynski University in Warsaw, 01-938 Warsaw, Poland
| | - Włodzimierz Kutner
- Department
of Electrode Processes, Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
- Faculty
of Mathematics and Natural Sciences. School of Sciences, Cardinal Stefan Wyszynski University in Warsaw, 01-938 Warsaw, Poland
| | - Piyush Sindhu Sharma
- Functional
Polymers Research Team, Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland
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Godínez-Pérez BM, Schilmann A, Lagunas-Martínez A, Escamilla-Núñez C, Burguete-García AI, Aguilar-Garduño C, Blanco-Muñoz J, Lacasaña M. Pesticide use patterns and their association with cytokine levels in Mexican flower workers. Int Arch Occup Environ Health 2024; 97:291-302. [PMID: 38270603 DOI: 10.1007/s00420-023-02043-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 12/16/2023] [Indexed: 01/26/2024]
Abstract
OBJECTIVE Occupational exposure to pesticides is a known risk for disrupting cellular immune response in flower workers due to their use of multiple chemical products, poor work conditions, and inadequate protection. Recently, the analysis of pesticide use patterns has emerged as an alternative to studying exposure to mixtures of these products. This study aimed to evaluate the association between exposure to different patterns of pesticide use and the cytokine profile of flower workers in the State of Mexico and Morelos, Mexico. METHODS A cross-sectional study was carried out on a population of 108 flower workers. Serum levels of IL-4, IL-5, IL-6, IL-8, IL-10 cytokines were analyzed by means of multiplex analysis, and TNF-α and IFN-γ using an ELISA test. Pesticide use patterns were generated by principal components analysis. RESULTS The analysis revealed that certain patterns of pesticide use, combining insecticides and fungicides, were associated with higher levels of pro-inflammatory cytokines, particularly IL-6 and IFN-γ. CONCLUSION These findings indicate that pesticides may possess immunotoxic properties, contributing to increased inflammatory response. However, further comprehensive epidemiological studies are needed to establish a causal relationship.
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Affiliation(s)
| | - Astrid Schilmann
- National Institute of Public Health of Mexico, Av. Universidad 655, 62130, Cuernavaca, Morelos, Mexico
| | - Alfredo Lagunas-Martínez
- National Institute of Public Health of Mexico, Av. Universidad 655, 62130, Cuernavaca, Morelos, Mexico
| | - Consuelo Escamilla-Núñez
- National Institute of Public Health of Mexico, Av. Universidad 655, 62130, Cuernavaca, Morelos, Mexico
| | | | | | - Julia Blanco-Muñoz
- National Institute of Public Health of Mexico, Av. Universidad 655, 62130, Cuernavaca, Morelos, Mexico.
| | - Marina Lacasaña
- Andalusian School of Public Health, Cuesta del Observatorio 4, 18011, Granada, Spain
- Instituto de Investigación Biosanitaria de Granada (Ibs.GRANADA), Granada, Spain
- CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Andalusian Health and Environment Observatory (OSMAN), Granada, Spain
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7
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Fathi MA, Shen D, Luo L, Li Y, Elnesr SS, Li C. The exposure in ovo to glyphosate on the integrity of intestinal epithelial tight junctions of chicks. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2024; 59:183-191. [PMID: 38400726 DOI: 10.1080/03601234.2024.2319006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/26/2024]
Abstract
Glyphosate is an ingredient widely used in various commercial formulations, including Roundup®. This study focused on tight junctions and the expression of inflammatory genes in the small intestine of chicks. On the sixth day of embryonic development, the eggs were randomly assigned to three groups: the control group (CON, n = 60), the glyphosate group (GLYP, n = 60), which received 10 mg of active glyphosate/kg egg mass, and the Roundup®-based glyphosate group also received 10 mg of glyphosate. The results indicated that the chicks exposed to glyphosate or Roundup® exhibited signs of oxidative stress. Additionally, histopathological alterations in the small intestine tissues included villi fusion, complete fusion of some intestinal villi, a reduced number of goblet cells, and necrosis of some submucosal epithelial cells in chicks. Genes related to the small intestine (ZO-1, ZO-2, Claudin-1, Claudin-3, JAM2, and Occludin), as well as the levels of pro-inflammatory cytokines (IFNγ, IL-1β, and IL-6), exhibited significant changes in the groups exposed to glyphosate or Roundup® compared to the control group. In conclusion, the toxicity of pure glyphosate or Roundup® likely disrupts the small intestine of chicks by modulating the expression of genes associated with tight junctions in the small intestine.
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Affiliation(s)
- Mohamed A Fathi
- Jiangsu Joint International Research Laboratory of Animal Gastrointestinal Genomes Research Center for Livestock Environmental Control and Smart Production, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
- Animal Production Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
| | - Dan Shen
- Jiangsu Joint International Research Laboratory of Animal Gastrointestinal Genomes Research Center for Livestock Environmental Control and Smart Production, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Lu Luo
- Jiangsu Joint International Research Laboratory of Animal Gastrointestinal Genomes Research Center for Livestock Environmental Control and Smart Production, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Yansen Li
- Jiangsu Joint International Research Laboratory of Animal Gastrointestinal Genomes Research Center for Livestock Environmental Control and Smart Production, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Shaaban S Elnesr
- Department of Poultry Production, Faculty of Agriculture, Fayoum University, Fayoum, Egypt
| | - Chunmei Li
- Jiangsu Joint International Research Laboratory of Animal Gastrointestinal Genomes Research Center for Livestock Environmental Control and Smart Production, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
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Kovacheva E, Gevezova M, Maes M, Sarafian V. Mast Cells in Autism Spectrum Disorder-The Enigma to Be Solved? Int J Mol Sci 2024; 25:2651. [PMID: 38473898 DOI: 10.3390/ijms25052651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
Autism Spectrum Disorder (ASD) is a disturbance of neurodevelopment with a complicated pathogenesis and unidentified etiology. Many children with ASD have a history of "allergic symptoms", often in the absence of mast cell (MC)-positive tests. Activation of MCs by various stimuli may release molecules related to inflammation and neurotoxicity, contributing to the development of ASD. The aim of the present paper is to enrich the current knowledge on the relationship between MCs and ASD by discussing key molecules and immune pathways associated with MCs in the pathogenesis of autism. Cytokines, essential marker molecules for MC degranulation and therapeutic targets, are also highlighted. Understanding the relationship between ASD and the activation of MCs, as well as the involved molecules and interactions, are the main points contributing to solving the enigma. Key molecules, associated with MCs, may provide new insights to the discovery of drug targets for modeling inflammation in ASD.
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Affiliation(s)
- Eleonora Kovacheva
- Department of Medical Biology, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Research Institute, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
| | - Maria Gevezova
- Department of Medical Biology, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Research Institute, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
| | - Michael Maes
- Research Institute, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
- Key Laboratory of Psychosomatic Medicine, Chinese Academy of Medical Sciences, Chengdu 610072, China
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Cognitive Fitness and Technology Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Psychiatry, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Victoria Sarafian
- Department of Medical Biology, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Research Institute, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
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9
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Lopes-Ferreira M, Farinha LRL, Costa YSO, Pinto FJ, Disner GR, da Rosa JGDS, Lima C. Pesticide-Induced Inflammation at a Glance. TOXICS 2023; 11:896. [PMID: 37999548 PMCID: PMC10675742 DOI: 10.3390/toxics11110896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 10/23/2023] [Accepted: 10/30/2023] [Indexed: 11/25/2023]
Abstract
The increasing number of studies reporting the risks of the exposure to pesticides aligned with the intensified use of such hazardous chemicals has emerged as a pressing contemporary issue, notably due to the potential effects to both the environment and human health. Pesticides, while broadly applied in modern agriculture for pest control and crop protection, have raised concerns due to their unintended effects on non-target organisms. The immune system exerts a key role in the protection against the exposome, which could result in cellular imbalances and tissue damage through the inflammatory response. Pesticides, which encompass a diverse array of chemicals, have been linked to inflammation in experimental models. Therefore, the aim of this review is to discuss the increasing concern over the risks of pesticide exposure focusing on the effects of various chemical classes on inflammation by covering, as broadly as possible, different experimental approaches as well as the multiple or co-exposure of pesticides. Overall, pesticides potentially induce inflammation in different experimental models, manifested through skin irritation, respiratory impairment, or systemic effects. The connection between pesticides and inflammation highlights the importance of proper handling and regulation of these substances and underscores the need for research into safer and sustainable practices to reduce our reliance on synthetic pesticides and fertilizers.
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Affiliation(s)
- Monica Lopes-Ferreira
- Immunoregulation Unit, Laboratory of Applied Toxinology (CeTICs/FAPESP), Butantan Institute, São Paulo 05503900, Brazil; (L.R.L.F.); (Y.S.O.C.); (F.J.P.); (G.R.D.); (J.G.d.S.d.R.); (C.L.)
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10
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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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11
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Pandher U, Kirychuk S, Schneberger D, Thompson B, Aulakh G, Sethi RS, Singh B. Adhesion Molecules in Lung Inflammation from Repeated Glyphosate Exposures. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20085484. [PMID: 37107767 PMCID: PMC10138447 DOI: 10.3390/ijerph20085484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/25/2023] [Accepted: 04/03/2023] [Indexed: 05/11/2023]
Abstract
Glyphosate is an active ingredient in herbicides. Exposure to glyphosate-based herbicides has been associated with respiratory dysfunctions in agricultural workers. The ability of inhaled glyphosate to induce lung inflammation is not well understood. Further, the role of adhesion molecules in glyphosate-induced lung inflammation has not been studied. We evaluated lung inflammatory responses from single and repeated glyphosate exposures. Male C57BL/6 mice were intranasally exposed to glyphosate (1 μg/40 μL) for 1 day or once daily for 5 days or 10 days. Lung tissue and bronchoalveolar lavage (BAL) fluid were collected and analyzed. Repeated exposure to glyphosate for 5 days and 10 days resulted in an increase in neutrophils in BAL fluid and higher eosinophil peroxidase levels in lungs, with leukocyte infiltration further confirmed through lung histology. Repetitive exposure to glyphosate increased IL-33 and Th2 cytokines IL-5 and IL-13. A single glyphosate treatment revealed expression for ICAM-1, VCAM-1, and vWF adhesion molecules in the perivascular region of lung sections; with repeated treatment (5 and 10 days), adhesion molecule expression was found in the perivascular, peribronchiolar, and alveolar regions of the lungs. Repetitive exposure to glyphosate induced cellular inflammation in which adhesion molecules may be important to the lung inflammatory process.
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Affiliation(s)
- Upkardeep Pandher
- Health Sciences Graduate Program, University of Saskatchewan, 107 Wiggins Road, P.O. Box 23, Saskatoon, SK S7N 5E5, Canada
- Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, 104 Clinic Place, P.O. Box 23, Saskatoon, SK S7N 2Z4, Canada
| | - Shelley Kirychuk
- Department of Medicine, College of Medicine, Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, 104 Clinic Place, P.O. Box 23, Saskatoon, SK S7N 2Z4, Canada
- Correspondence:
| | - David Schneberger
- Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, 104 Clinic Place, P.O. Box 23, Saskatoon, SK S7N 2Z4, Canada
| | - Brooke Thompson
- Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, 104 Clinic Place, P.O. Box 23, Saskatoon, SK S7N 2Z4, Canada
| | - Gurpreet Aulakh
- Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, P.O. Box 23, Saskatoon, SK S7N 5B4, Canada
| | - R. S. Sethi
- College of Animal Biotechnology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana 141004, India
| | - Baljit Singh
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, P.O. Box 23, Saskatoon, SK S7N 5B4, Canada
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12
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Mehtiyev T, Karaman EF, Ozden S. Alterations in cell viability, reactive oxygen species production, and modulation of gene expression involved in mitogen-activated protein kinase/extracellular regulating kinase signaling pathway by glyphosate and its commercial formulation in hepatocellular carcinoma cells. Toxicol Ind Health 2023; 39:81-93. [PMID: 36625791 DOI: 10.1177/07482337221149571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Glyphosate (N-phosphonomethyl glycine) is a non-selective, organophosphate herbicide widely used in agriculture and forestry. We investigated the possible toxic effects of the glyphosate active compound and its commercial formulation (Roundup Star®) in the human hepatocellular carcinoma (HepG2) cell line, including their effects on the cytotoxicity, cell proliferation, reactive oxygen species (ROS) levels, and expression of oxidative stress-related genes such as HO-1, Hsp70 Nrf2, L-FABP, and Keap1. MTT and NRU tests indicated that the IC50 values of Roundup Star® were 219 and 140 μM, respectively, and because glyphosate failed to induce cell death at the studied concentrations, an IC50 value could not be determined for this cell line. Roundup Star at concentrations of 50 and 100 μM significantly increased (39.58% and 52%, respectively) cell proliferation, which 200 μM of glyphosate increased by 35.38%. ROS levels increased by 27.97% and 44.77% for 25 and 100 μM of Roundup Star and 32.74% and 38.63% for 100 and 200 μM of glyphosate exposure. In conclusion, Roundup Star and glyphosate significantly increased expression levels of selected genes related to the mitogen-activated protein kinase/extracellular signal-regulated kinase (MAPK/ERK) signaling pathway. This suggests that ROS production and the MAPK/ERK signaling pathway may be key molecular mechanisms in the toxicity of glyphosate in liver cells.
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Affiliation(s)
- Toghrul Mehtiyev
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, 37516Istanbul University, Istanbul, Turkey.,Institute of Graduate Studies in Health Sciences, Istanbul University, Istanbul, Turkey
| | - Ecem Fatma Karaman
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, 37516Istanbul University, Istanbul, Turkey.,Department of Pharmaceutical Toxicology, Faculty of Pharmacy, 420479Biruni University, Istanbul, Turkey
| | - Sibel Ozden
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, 37516Istanbul University, Istanbul, Turkey
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13
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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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14
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Ospina M, Schütze A, Morales-Agudelo P, Vidal M, Wong LY, Calafat AM. Exposure to glyphosate in the United States: Data from the 2013-2014 National Health and Nutrition Examination Survey. ENVIRONMENT INTERNATIONAL 2022; 170:107620. [PMID: 36368224 DOI: 10.1016/j.envint.2022.107620] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 05/12/2023]
Abstract
BACKGROUND Exposure to glyphosate, the most used herbicide in the United States, is not well characterized. We assessed glyphosate exposure in a representative sample of the U.S. population ≥ 6 years from the 2013-2014 National Health and Nutrition Examination Survey. METHODS We quantified glyphosate in urine (N = 2,310) by ion chromatography isotope-dilution tandem mass spectrometry. We conducted univariate analysis using log-transformed creatinine-corrected glyphosate concentrations with demographic and lifestyle covariates we hypothesized could affect glyphosate exposure based on published data including race/ethnicity, sex, age group, family income to poverty ratio, fasting time, sample collection season, consumption of food categories (including cereal consumption) and having used weed killer products. We used multiple logistic regression to examine the likelihood of glyphosate concentrations being above the 95th percentile and age-stratified multiple linear regression to evaluate associations between glyphosate concentrations and statistically significant covariates from the univariate analysis: race/ethnicity, sex, age group, fasting time, cereal consumption, soft drink consumption, sample collection season, and urinary creatinine. RESULTS Glyphosate weighted detection frequency was 81.2 % (median (interquartile range): 0.392 (0.263-0.656) μg/L; 0.450 (0.266-0.753) μg/g creatinine). Glyphosate concentration decreased from age 6-11 until age 20-59 and increased at 60+ years in univariate analyses. Children/adolescents and adults who fasted > 8 h had significantly lower model-adjusted geometric means (0.43 (0.37-0.51) μg/L and 0.37 (0.33-0.39) μg/L) than those fasting ≤ 8 h (0.51 (0.46-0.56) μg/L and 0.44 (0.41-0.48) μg/L), respectively. The likelihood (odds ratio (95 % CI)) of glyphosate concentrations being > 95th percentile was 1.94 (1.06-3.54) times higher in people who fasted ≤ 8 h than people fasting > 8 h (P = 0.0318). CONCLUSIONS These first nationally representative data suggest that over four-fifths of the U.S. general population ≥ 6 years experienced recent exposure to glyphosate. Variation in glyphosate concentration by food consumption habits may reflect diet or lifestyle differences.
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Affiliation(s)
- Maria Ospina
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy, MS S103-2, Atlanta, GA 30341, USA.
| | - Andre Schütze
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy, MS S103-2, Atlanta, GA 30341, USA
| | - Pilar Morales-Agudelo
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy, MS S103-2, Atlanta, GA 30341, USA
| | - Meghan Vidal
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy, MS S103-2, Atlanta, GA 30341, USA
| | - Lee-Yang Wong
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy, MS S103-2, Atlanta, GA 30341, USA
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy, MS S103-2, Atlanta, GA 30341, USA
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15
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Buchenauer L, Junge KM, Haange SB, Simon JC, von Bergen M, Hoh AL, Aust G, Zenclussen AC, Stangl GI, Polte T. Glyphosate differentially affects the allergic immune response across generations in mice. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 850:157973. [PMID: 35963408 DOI: 10.1016/j.scitotenv.2022.157973] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/24/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
Exposure to environmental pollutants via food, particularly during the prenatal and early postnatal periods, has been linked to adverse effects on the immune system. Among these pollutants, the widely used pesticide glyphosate has been associated with endocrine disruption, autism, and cancer. Occupational high exposure to glyphosate has also been shown to influence immune function and exacerbate allergic asthma. However, there are no studies investigating the effect of a common low-dose glyphosate exposure on the allergic immune response - neither directly nor across generations. We therefore explored the impact of oral low-dose glyphosate exposure (0.5 and 50 mg/kg body weight/day) on airway inflammation in dams (F0) and the offspring (F1 and F2 generations) using a murine multi-generational asthma model. While exposure to 50 mg/kg glyphosate induced a mild eosinophilic infiltration in the bronchoalveolar lavage and TH2 cytokine production in the dams, the F1 offspring developed a reduced immune response after maternal exposure to 0.5 mg/kg glyphosate. In particular, decreased lung inflammation, HDM-specific IgE levels, and asthma-relevant cytokine production were primarily observed in the female F1 offspring. However, not only the TH2 cytokines IL-13 and IL-5 but also the TH17 cytokine IL-17 and TH1 cytokine IFN-γ were reduced indicating a more general immunosuppressive function. Notably, the dampened immune response was no longer observed in the female F2 generation. Furthermore, female F1 offspring showed an increased abundance of bacteria in the gut, which have been associated with probiotic-mediated reduced allergic immune responses. Our results suggest a potential immunosuppressive effect of low-dose maternal glyphosate exposure in the F1 offspring that might be mediated by an altered microbiota composition. Further studies are needed to explore if this type of immune response modulation might also be associated with impairments in immune defense upon infectious diseases or even cancer pathology.
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Affiliation(s)
- Lisa Buchenauer
- Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Immunology, Leipzig, Germany; Department of Dermatology, Venerology and Allergology, Leipzig University Medical Center, University of Leipzig, Leipzig, Germany
| | - Kristin M Junge
- Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Immunology, Leipzig, Germany
| | - Sven-Bastiaan Haange
- Helmholtz Centre for Environmental Research - UFZ, Department of Molecular Systems Biology, Leipzig, Germany
| | - Jan C Simon
- Department of Dermatology, Venerology and Allergology, Leipzig University Medical Center, University of Leipzig, Leipzig, Germany
| | - Martin von Bergen
- Helmholtz Centre for Environmental Research - UFZ, Department of Molecular Systems Biology, Leipzig, Germany; University of Leipzig, Faculty of Life Sciences, Institute of Biochemistry, Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Anna-Lena Hoh
- Research Laboratories and Clinic of Visceral, Transplantation, Thoracic, and Vascular Surgery, Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany
| | - Gabriela Aust
- Research Laboratories and Clinic of Visceral, Transplantation, Thoracic, and Vascular Surgery, Leipzig University and University Hospital Leipzig, 04103 Leipzig, Germany
| | - Ana C Zenclussen
- Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Immunology, Leipzig, Germany; Perinatal Immunology, Saxonian Incubator for Clinical Translation (SIKT), Medical Faculty, University Leipzig, 04103 Leipzig, Germany
| | - Gabriele I Stangl
- Institute of Agriculture and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Tobias Polte
- Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Immunology, Leipzig, Germany; Department of Dermatology, Venerology and Allergology, Leipzig University Medical Center, University of Leipzig, Leipzig, Germany.
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16
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Drønen EK, Namork E, Dirven H, Nygaard UC. Suspected gut barrier disruptors and development of food allergy: Adjuvant effects and early immune responses. FRONTIERS IN ALLERGY 2022; 3:1029125. [PMID: 36483186 PMCID: PMC9723362 DOI: 10.3389/falgy.2022.1029125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/03/2022] [Indexed: 08/22/2023] Open
Abstract
Food allergy is an increasing public health challenge worldwide. It has recently been hypothesized that the increase in exposure to intestinal epithelial barrier-damaging biological and chemical agents contribute to this development. In animal models, exposure to adjuvants with a food allergen has been shown to promote sensitization and development of food allergy, and barrier disrupting capacities have been suggested to be one mechanism of adjuvant action. Here, we investigated how gut barrier disrupting compounds affected food allergy development in a mouse model of peanut allergy. Sensitization and clinical peanut allergy in C3H/HEOuJ mice were assessed after repeated oral exposure to peanut extract together with cholera toxin (CT; positive control), the mycotoxin deoxynivalenol (DON), house dust mite (HDM) or the pesticide glyphosate (GLY). In addition, we investigated early effects 4 to 48 h after a single exposure to the compounds by assessing markers of intestinal barrier permeability, alarmin production, intestinal epithelial responses, and local immune responses. CT and DON exerted adjuvant effects on peanut allergy development assessed as clinical anaphylaxis in mice. Early markers were affected only by DON, observed as increased IL-33 (interleukin 33) and thymic stromal lymphopoietin (TSLP) alarmin production in intestines and IL-33 receptor ST2 in serum. DON also induced an inflammatory immune response in lymph node cells stimulated with lipopolysaccharide (LPS). HDM and GLY did not clearly promote clinical food allergy and affected few of the early markers at the doses tested. In conclusion, oral exposure to CT and DON promoted development of clinical anaphylaxis in the peanut allergy mouse model. DON, but not CT, affected the early markers measured in this study, indicating that DON and CT have different modes of action at the early stages of peanut sensitization.
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Affiliation(s)
- Elena Klåpbakken Drønen
- Department for Chemical Toxicology, Division for Climate and Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Ellen Namork
- Department for Chemical Toxicology, Division for Climate and Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Hubert Dirven
- Department for Chemical Toxicology, Division for Climate and Health, Norwegian Institute of Public Health, Oslo, Norway
| | - Unni Cecilie Nygaard
- Department for Chemical Toxicology, Division for Climate and Health, Norwegian Institute of Public Health, Oslo, Norway
- Section for Immunology, Division for Infection Control, Norwegian Institute of Public Health, Oslo, Norway
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17
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Islam JY, Mohamed A, Umbach DM, London SJ, Henneberger PK, Beane Freeman LE, Sandler DP, Hoppin JA. Allergic and non-allergic wheeze among farm women in the Agricultural Health Study (2005-2010). Occup Environ Med 2022; 79:oemed-2022-108252. [PMID: 35940867 PMCID: PMC9905343 DOI: 10.1136/oemed-2022-108252] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 07/19/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND Farms represent complex environments for respiratory exposures including hays, grains and pesticides. Little is known about the impact of these exposures on women's respiratory health. We evaluated the association of farm exposures with allergic and non-allergic wheeze among women in the Agricultural Health Study, a study of farmers and their spouses based in Iowa and North Carolina. METHODS We used self-reported data (2005-2010) on current use (≤12 months) of 15 pesticides (selected based on frequency of use) and occupational farm activities from 20 164 women. We defined allergic wheeze as reporting wheeze and doctor-diagnosed hay fever (7%) and non-allergic wheeze as wheeze but not hay fever (8%) in the past 12 months. Using polytomous logistic regression, we evaluated associations of wheeze subtypes with pesticides and other farm exposures (eg, raising farm animals) using no wheeze/hay fever as the referent, adjusting for age, body mass index, state, current asthma, glyphosate use and smoking. RESULTS Current use of any pesticide, reported by 7% of women, was associated with both allergic (OR: 1.36, 95% CI: 1.10 to 1.67) and non-allergic (OR: 1.25, 95% CI: 1.04 to 1.51) wheeze. Four pesticides were associated with at least one wheeze subtype: glyphosate, with both wheeze subtypes; diazinon and fly spray with only allergic wheeze; carbaryl with only non-allergic wheeze. Working weekly with mouldy hay was associated with allergic (OR: 1.88, 95% CI: 1.26 to 2.80) and non-allergic wheeze (OR: 1.69, 95% CI: 1.18 to 2.42). CONCLUSION Use of specific pesticides and certain farm activities may contribute to wheeze among farm women.
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Affiliation(s)
- Jessica Y Islam
- Department of Biological Sciences, NC State University, Raleigh, North Carolina, USA
- Center for Human Health and the Environment, NC State University, Raleigh, North Carolina, USA
| | - Ahmed Mohamed
- Department of Biological Sciences, NC State University, Raleigh, North Carolina, USA
| | - David M Umbach
- Biostatistics Branch, NIEHS, Research Triangle Park, North Carolina, USA
| | | | | | | | - Dale P Sandler
- Epidemiology Branch, NIEHS, Research Triangle Park, North Carolina, USA
| | - Jane A Hoppin
- Department of Biological Sciences, NC State University, Raleigh, North Carolina, USA
- Center for Human Health and the Environment, NC State University, Raleigh, North Carolina, USA
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18
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Sidthilaw S, Sapbamrer R, Pothirat C, Wunnapuk K, Khacha-ananda S. Effects of exposure to glyphosate on oxidative stress, inflammation, and lung function in maize farmers, Northern Thailand. BMC Public Health 2022; 22:1343. [PMID: 35836163 PMCID: PMC9281059 DOI: 10.1186/s12889-022-13696-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 06/15/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Glyphosate is a herbicide which is commonly used in agricultural areas. However, previous studies on glyphosate exposure in farmers and their health are still scarce. METHODS A longitudinal pre-post study was performed among maize farmers. Information from questionnaires, urine and blood samples, and lung function were collected a day before and a day after glyphosate application in the morning. The urine samples were analyzed using liquid chromatography-tandem mass spectrometry to detect glyphosate levels. Serum samples were analyzed to detect malondialdehyde (MDA), glutathione (GHS), and C-reactive protein (CRP) levels using thiobarbituric acid, dithiobisnitrobenzoic acid, and nephelometry, respectively. Lung function performances were measured using a spirometer. RESULTS A total of 180 maize farmers met the study inclusion criteria. After glyphosate application, it was found that increased urinary glyphosate levels contributed to increased serum MDA (β = 0.024, 95% CI = 0.000, 0.0047) and decreased serum GHS (β = -0.022, 95% CI = -0.037, -0.007), FEV1 (β = -0.134, 95% CI = -0.168, -0.100), FEV1/FVC (β = -0.062, 95% CI = -0.082, -0.042) and PEF (β = -0.952, 95% CI = -1.169, -0.735). CONCLUSIONS Exposure to glyphosate during glyphosate application had significant effects on oxidative stress and lung function in maize farmers.
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Affiliation(s)
- Sutthinee Sidthilaw
- Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200 Thailand
| | - Ratana Sapbamrer
- Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200 Thailand
| | - Chaicharn Pothirat
- Division of Pulmonary, Critical Care and Allergy, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200 Thailand
| | - Klintean Wunnapuk
- Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200 Thailand
| | - Supakit Khacha-ananda
- Department of Forensic Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200 Thailand
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19
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He Y, Xiong F, Qian Y, Xu K, Pu Y, Huang J, Liu M, Yin L, Zhang J, Pu Y, Sun R. Hematological effects of glyphosate in mice revealed by traditional toxicology and transcriptome sequencing. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 92:103866. [PMID: 35489704 DOI: 10.1016/j.etap.2022.103866] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 03/16/2022] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
The herbicide glyphosate is being used worldwide. Hematological toxicity caused by glyphosate exposure has been reported, but the underlying mechanisms remain unclear. In this study, classical toxicology methods and RNA sequencing were performed to explore the molecular mechanisms related to glyphosate hematotoxicity. We found that 500 mg/kg b.w. glyphosate-based herbicide (GBH) significantly decreased leukocyte, neutrophil, lymphocyte and monocyte counts, as well as inhibited colony-forming abilities of CFU-GM, CFU-G and CFU-GEMM. RNA sequencing identified 82 and 48 differentially expressed genes (DEGs) in BM cells after treatment with 250 mg/kg and 500 mg/kg GBH, respectively. Meanwhile, GO and KEGG analyses revealed that the MAPK signaling pathway, hematopoietic cell lineage and cytokine-cytokine receptor interactions were vital pathways involved in GBH-induced toxicity in BM cells. Notably, Nr4a, Fos, Thbs1 and tnfrsf19 contributed to the hematotoxicity of GBH by regulating hematopoietic stem cell functions. In summary, our efforts enhance the understanding of the glyphosate hematotoxic responses and facilitate future studies on its corresponding mechanisms.
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Affiliation(s)
- Yuhong He
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China; School of Medicine, Southeast University, Nanjing 210009, Jiangsu, China
| | - Fei Xiong
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Yongkang Qian
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Kai Xu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Yunqiu Pu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Jiawei Huang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Manman Liu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Lihong Yin
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Juan Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Yuepu Pu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China
| | - Rongli Sun
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, Jiangsu, China.
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Maddalon A, Iulini M, Galbiati V, Colosio C, Mandić-Rajčević S, Corsini E. Direct Effects of Glyphosate on In Vitro T Helper Cell Differentiation and Cytokine Production. Front Immunol 2022; 13:854837. [PMID: 35359959 PMCID: PMC8960435 DOI: 10.3389/fimmu.2022.854837] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 02/11/2022] [Indexed: 12/15/2022] Open
Abstract
Glyphosate (G) is the active ingredient of the most used herbicides worldwide. Its use is currently very debated, as several studies indicating its hazard and toxicity are emerging. Among them, there is evidence of adverse effects on the immune system. The aim of this work was to investigate if G could directly affect immune cells. Peripheral blood mononuclear cells (PBMC) obtained from healthy donors were used as experimental model. PBMC were expose to G and stimulated with PMA/ionomycin, T helper (Th) cell differentiation and cytokine production were assessed by flow cytometry and enzyme-linked immunosorbent assay, respectively. A reduction of Th1/Th2 ratio, mainly due to a decrease in Th1 cells, was observed following G exposure. Results show an enhancement of IL-4 and IL-17A production, and a reduction of IFN-γ. Based on literature evidence that suggest G being an endocrine disruptor, we investigated the role of nuclear estrogen receptors (ER). ERα/ERβ inhibition by ICI 182,780 abolished the effects of G on IFN-γ and IL-4 release, suggesting a role of ER in the observed effects. To further characterize the mechanism of action of G, miRNAs, both in exosome and intracellular, were investigated. A statistically significant increase in miR-500a-5p was observed following G treatment. The blockage of miR-500a-5p, using a specific antagomir, prevented G-induced reduction of IFN-γ production. Finally a relationship between miR-500a-5p up-regulation and ER was observed. Overall, these results suggest that G can directly act on T cells, altering T cell differentiation and cytokines production.
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Affiliation(s)
- Ambra Maddalon
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Martina Iulini
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Valentina Galbiati
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Claudio Colosio
- Occupational Health Unit, International Centre for Rural Health, ASST Santi Paolo e Carlo, Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Stefan Mandić-Rajčević
- Occupational Health Unit, International Centre for Rural Health, ASST Santi Paolo e Carlo, Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Emanuela Corsini
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
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21
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Cosemans C, Van Larebeke N, Janssen BG, Martens DS, Baeyens W, Bruckers L, Den Hond E, Coertjens D, Nelen V, Schoeters G, Hoppe HW, Wolfs E, Smeets K, Nawrot TS, Plusquin M. Glyphosate and AMPA exposure in relation to markers of biological aging in an adult population-based study. Int J Hyg Environ Health 2022; 240:113895. [PMID: 34883335 DOI: 10.1016/j.ijheh.2021.113895] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND/AIM Glyphosate, a broad-spectrum herbicide, and its main metabolite aminomethylphosphonic acid (AMPA) are persistent in the environment. Studies showed associations between glyphosate or AMPA exposure and several adverse cellular processes, including metabolic alterations and oxidative stress. OBJECTIVE To determine the association between glyphosate and AMPA exposure and biomarkers of biological aging. METHODS We examined glyphosate and AMPA exposure, mtDNA content and leukocyte telomere length in 181 adults, included in the third cycle of the Flemish Environment and Health Study (FLEHSIII). DNA was isolated from leukocytes and the relative mtDNA content and telomere length were determined using qPCR. Urinary glyphosate and AMPA concentrations were measured by Gas Chromatography-Tandem Mass Spectrometry (GC-MS-MS). We used multiple linear regression models to associate mtDNA content and leukocyte telomere length with glyphosate or AMPA exposure while adjusting for confounding variables. RESULTS A doubling in urinary AMPA concentration was associated with 5.19% (95% CI: 0.49 to 10.11; p = 0.03) longer leukocyte telomere length, while no association was observed with urinary glyphosate concentration. No association between mtDNA content and urinary glyphosate nor AMPA levels was observed. CONCLUSIONS This study showed that AMPA exposure may be associated with telomere biology in adults.
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Affiliation(s)
- Charlotte Cosemans
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Nicolas Van Larebeke
- Department of Radiotherapy and Experimental Cancerology, Ghent University, Ghent, Belgium; Department of Analytical, Environmental and Geo-Chemistry, Vrije Universiteit Brussel, Brussels, Belgium
| | - Bram G Janssen
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Dries S Martens
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Willy Baeyens
- Department of Analytical and Environmental Chemistry, Vrije Universiteit Brussel, Brussels, Belgium
| | - Liesbeth Bruckers
- Interuniversity Institute for Biostatistics and Statistical Bioinformatics, Hasselt University, Hasselt, Belgium
| | | | - Dries Coertjens
- Faculty of Social Sciences and IMDO, University of Antwerp, Antwerp, Belgium
| | - Vera Nelen
- Faculty of Social Sciences and IMDO, University of Antwerp, Antwerp, Belgium
| | - Greet Schoeters
- Environmental Risk and Health, Flemish Institute for Technological Research (VITO), Mol, Belgium
| | | | - Esther Wolfs
- Biomedical Research Institute, Faculty of Medicine, Hasselt University, Belgium
| | - Karen Smeets
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium; School of Public Health, Occupational & Environmental Medicine, Leuven University, Leuven, Belgium
| | - Michelle Plusquin
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium.
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22
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Pandher U, Kirychuk S, Schneberger D, Thompson B, Aulakh G, Sethi RS, Singh B. Lung inflammation from repeated exposure to LPS and glyphosate. Cell Tissue Res 2021; 386:637-648. [PMID: 34626244 DOI: 10.1007/s00441-021-03531-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 09/20/2021] [Indexed: 10/20/2022]
Abstract
Agricultural workplaces consist of multiple airborne contaminants and inhalation exposures induce respiratory effects in workers. Endotoxin (LPS) and glyphosate are two common airborne contaminants in agricultural environments. We have previously shown that exposure to a combination of LPS and glyphosate synergistically modulates immune reactions as compared to individual exposures. The immunopathogenesis of acute and chronic exposure to complex agricultural exposures including LPS and glyphosate is not known; therefore, we further investigated the lung cellular inflammatory differences in mice exposed to either a combination, or individual, LPS, and glyphosate for 1 day, 5 days, and 10 days. Exposure to a combination of LPS and glyphosate resulted in greater cellular inflammatory effects in lungs as compared to individual exposures to LPS or glyphosate. Repeated exposures to the combination of LPS and glyphosate resulted in robust infiltration of inflammatory cells in the perivascular, peribronchiolar, and alveolar regions, and increases of alveolar septal thicknesses and perivascular spaces in the lungs with intense intercellular adhesion molecule (ICAM) - 1 staining in the perivascular region, but minimal staining in the pulmonary artery endothelium.
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Affiliation(s)
- Upkardeep Pandher
- Department of Medicine, College of Medicine, Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, 104 Clinic Place, P.O. Box 23, Saskatoon, SK, S7N 2Z4, Canada
| | - Shelley Kirychuk
- Department of Medicine, College of Medicine, Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, 104 Clinic Place, P.O. Box 23, Saskatoon, SK, S7N 2Z4, Canada.
| | - David Schneberger
- Department of Medicine, College of Medicine, Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, 104 Clinic Place, P.O. Box 23, Saskatoon, SK, S7N 2Z4, Canada
| | - Brooke Thompson
- Department of Medicine, College of Medicine, Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, 104 Clinic Place, P.O. Box 23, Saskatoon, SK, S7N 2Z4, Canada
| | - Gurpreet Aulakh
- Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK, S7N 5B4, Canada
| | - R S Sethi
- College of Animal Biotechnology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, 141004, India
| | - Baljit Singh
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, SK, S7N 5B4, Saskatoon, Canada
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23
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Marino M, Mele E, Viggiano A, Nori SL, Meccariello R, Santoro A. Pleiotropic Outcomes of Glyphosate Exposure: From Organ Damage to Effects on Inflammation, Cancer, Reproduction and Development. Int J Mol Sci 2021; 22:12606. [PMID: 34830483 PMCID: PMC8618927 DOI: 10.3390/ijms222212606] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/07/2021] [Accepted: 11/19/2021] [Indexed: 12/29/2022] Open
Abstract
Glyphosate is widely used worldwide as a potent herbicide. Due to its ubiquitous use, it is detectable in air, water and foodstuffs and can accumulate in human biological fluids and tissues representing a severe human health risk. In plants, glyphosate acts as an inhibitor of the shikimate pathway, which is absent in vertebrates. Due to this, international scientific authorities have long-considered glyphosate as a compound that has no or weak toxicity in humans. However, increasing evidence has highlighted the toxicity of glyphosate and its formulations in animals and human cells and tissues. Thus, despite the extension of the authorization of the use of glyphosate in Europe until 2022, several countries have begun to take precautionary measures to reduce its diffusion. Glyphosate has been detected in urine, blood and maternal milk and has been found to induce the generation of reactive oxygen species (ROS) and several cytotoxic and genotoxic effects in vitro and in animal models directly or indirectly through its metabolite, aminomethylphosphonic acid (AMPA). This review aims to summarize the more relevant findings on the biological effects and underlying molecular mechanisms of glyphosate, with a particular focus on glyphosate's potential to induce inflammation, DNA damage and alterations in gene expression profiles as well as adverse effects on reproduction and development.
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Affiliation(s)
- Marianna Marino
- Dipartimento di Medicina, Chirurgia e Odontoiatria “Scuola Medica Salernitana”, Università degli Studi di Salerno, Via S. Allende, 84081 Baronissi, Italy; (M.M.); (A.V.)
| | - Elena Mele
- Dipartimento di Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, 80133 Naples, Italy;
| | - Andrea Viggiano
- Dipartimento di Medicina, Chirurgia e Odontoiatria “Scuola Medica Salernitana”, Università degli Studi di Salerno, Via S. Allende, 84081 Baronissi, Italy; (M.M.); (A.V.)
| | - Stefania Lucia Nori
- Dipartimento di Farmacia, Università degli Studi di Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy;
| | - Rosaria Meccariello
- Dipartimento di Scienze Motorie e del Benessere, Università degli Studi di Napoli Parthenope, 80133 Naples, Italy;
| | - Antonietta Santoro
- Dipartimento di Medicina, Chirurgia e Odontoiatria “Scuola Medica Salernitana”, Università degli Studi di Salerno, Via S. Allende, 84081 Baronissi, Italy; (M.M.); (A.V.)
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24
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Liu X, Zhang Y, Ren Y, Li J. Melatonin prevents allergic airway inflammation in epicutaneously sensitized mice. Biosci Rep 2021; 41:BSR20210398. [PMID: 34522948 PMCID: PMC8458693 DOI: 10.1042/bsr20210398] [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: 03/09/2021] [Revised: 08/31/2021] [Accepted: 09/02/2021] [Indexed: 11/17/2022] Open
Abstract
PURPOSE The pathological process of atopic dermatitis (AD) progressing into other types of allergic diseases such as asthma and allergic rhinitis during the first several years of life is often referred to as the atopic march. Although the phenomenon of atopic march has been recognized for decades, how asthma stems from AD is still not fully understood, confounding a universal strategy to effectively protect people from the atopic march. METHODS We established experimental atopic march mice by first inducing allergic dermatitis with 0.5% fluorescein isothiocyante (FITC) applied to the skin, followed by an ovalbumin (OVA) airway challenge. In addition, by examining serum immunoglobulin (Ig) concentrations, airway cytokines, the levels of oxidative stress markers, histopathological changes in lung tissue and airway hyperresponsiveness (AHR), we were able to validate the successful establishment of the model. Furthermore, by detecting the attenuating effects of melatonin (MT) and the levels of oxidative stress in the atopic march mice, we explored the potential molecular mechanisms involved in the development of atopic march. RESULTS By successfully establishing an experimental atopic march mouse model, we were able to demonstrate that overproduction of oxidative stress in the lung significantly up-regulated the activation of nuclear factor-κB (NF-κB) signaling pathways causing thymic stromal lymphopoietin (TSLP) release, which further promotes the development of atopic march. CONCLUSIONS To mitigate the development of the atopic march, antioxidants such as MT may be imperative to inhibit NF-κB activation in the lung, especially after the onset of AD.
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Affiliation(s)
- Xudong Liu
- Department of Food Science and Engineering, Moutai Institute, Renhuai 564507, China
| | - Yuchao Zhang
- Department of Food Science and Engineering, Moutai Institute, Renhuai 564507, China
| | - Yaolin Ren
- School of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Jinquan Li
- School of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China
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25
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Theoharides TC. Ways to Address Perinatal Mast Cell Activation and Focal Brain Inflammation, including Response to SARS-CoV-2, in Autism Spectrum Disorder. J Pers Med 2021; 11:860. [PMID: 34575637 PMCID: PMC8465360 DOI: 10.3390/jpm11090860] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 01/08/2023] Open
Abstract
The prevalence of autism spectrum disorder (ASD) continues to increase, but no distinct pathogenesis or effective treatment are known yet. The presence of many comorbidities further complicates matters, making a personalized approach necessary. An increasing number of reports indicate that inflammation of the brain leads to neurodegenerative changes, especially during perinatal life, "short-circuiting the electrical system" in the amygdala that is essential for our ability to feel emotions, but also regulates fear. Inflammation of the brain can result from the stimulation of mast cells-found in all tissues including the brain-by neuropeptides, stress, toxins, and viruses such as SARS-CoV-2, leading to the activation of microglia. These resident brain defenders then release even more inflammatory molecules and stop "pruning" nerve connections, disrupting neuronal connectivity, lowering the fear threshold, and derailing the expression of emotions, as seen in ASD. Many epidemiological studies have reported a strong association between ASD and atopic dermatitis (eczema), asthma, and food allergies/intolerance, all of which involve activated mast cells. Mast cells can be triggered by allergens, neuropeptides, stress, and toxins, leading to disruption of the blood-brain barrier (BBB) and activation of microglia. Moreover, many epidemiological studies have reported a strong association between stress and atopic dermatitis (eczema) during gestation, which involves activated mast cells. Both mast cells and microglia can also be activated by SARS-CoV-2 in affected mothers during pregnancy. We showed increased expression of the proinflammatory cytokine IL-18 and its receptor, but decreased expression of the anti-inflammatory cytokine IL-38 and its receptor IL-36R, only in the amygdala of deceased children with ASD. We further showed that the natural flavonoid luteolin is a potent inhibitor of the activation of both mast cells and microglia, but also blocks SARS-CoV-2 binding to its receptor angiotensin-converting enzyme 2 (ACE2). A treatment approach should be tailored to each individual patient and should address hyperactivity/stress, allergies, or food intolerance, with the introduction of natural molecules or drugs to inhibit mast cells and microglia, such as liposomal luteolin.
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Affiliation(s)
- Theoharis C Theoharides
- Laboratory of Molecular Immunopharmacology and Drug Discovery, Department of Immunology, Tufts University School of Medicine, 136 Harrison Avenue, Suite 304, Boston, MA 02111, USA
- School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, MA 02111, USA
- Department of Internal Medicine, Tufts University School of Medicine and Tufts Medical Center, Boston, MA 02111, USA
- Department of Psychiatry, Tufts University School of Medicine and Tufts Medical Center, Boston, MA 02111, USA
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26
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Zhang L, Ding F, Wang R, Wu X, Wan Y, Hu J, Wu Q. Involvement of mitochondrial fission in renal tubular pyroptosis in mice exposed to high and environmental levels of glyphosate combined with hard water. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 283:117082. [PMID: 33848899 DOI: 10.1016/j.envpol.2021.117082] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/20/2021] [Accepted: 04/01/2021] [Indexed: 06/12/2023]
Abstract
Chronic interstitial nephritis in agricultural communities (CINAC) has reached epidemic proportions. The combination of glyphosate and hard water has been postulated to play a potent aetiological role in CINAC. Therefore, dynamin-related protein 1 (Drp1)-mediated aberrant mitochondrial fission and subsequent activation of the nucleotide-binding oligomerization domain (NOD)-like receptor protein 3 (Nlrp3)/caspase1 pathway may be involved in the pathogenesis of nephropathy. In the present study, mice were sub-chronically exposed to high doses and environmental levels of glyphosate (100 mg/kg body weight (mg/kg·bw) glyphosate in Roundup and 0.7 mg/L pure glyphosate, respectively) and hard water (2500 mg/L CaCO3 and 250 mg/L Ca2+, respectively) in drinking water. Moreover, Mdivi-1 (Md-1, 10 mg/kg·bw) was intraperitoneally injected to inhibit Drp1 on the basis of the high-dose experiment. Histopathological examination, biochemical analysis, ELISA, western blotting and fluorescent staining were used to analyse renal structure, renal tubular pyroptosis and mitochondrial fission/fusion alterations. The results showed dramatic proximal tubular injury, particularly in the combined groups. Moreover, significant increases in the protein expression levels of calmodulin (CaM), calmodulin-dependent protein kinase II (CaMKII), Drp1/p-Drp1-Ser616 and the Txnip/Nlrp3/caspase1 signalling pathway, and alterations in oxidative stress were observed in the combined groups, and these effects were attenuated by the Drp1 inhibitor Md-1. Intriguingly, there may be a synergistic effect of glyphosate and hard water on renal injury. Taken together, these results suggest that the combination of glyphosate and hard water, even at environmental exposure levels, enhances pyroptosis and ongoing tubulointerstitial inflammation through excessive Drp1-mediated mitochondrial fission.
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Affiliation(s)
- Lin Zhang
- School of Public Health, Fudan University, Shanghai, China
| | - Fan Ding
- School of Public Health, Fudan University, Shanghai, China
| | - Ruojing Wang
- School of Public Health, Fudan University, Shanghai, China
| | - Xuan Wu
- School of Public Health, Fudan University, Shanghai, China
| | - Yi Wan
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Jianying Hu
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Qing Wu
- School of Public Health, Fudan University, Shanghai, China.
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27
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Maddalon A, Galbiati V, Colosio C, Mandić-Rajčević S, Corsini E. Glyphosate-based herbicides: Evidence of immune-endocrine alteration. Toxicology 2021; 459:152851. [PMID: 34246717 DOI: 10.1016/j.tox.2021.152851] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/10/2021] [Accepted: 07/06/2021] [Indexed: 12/28/2022]
Abstract
Glyphosate (G) is the active ingredient of the most widely used herbicide products. It targets the enzyme 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), which lacks in humans, suggesting to confer a low mammalian toxicity to G-based herbicides (GBHs). Despite this, the use of G is currently under intense debate. Many studies indicating its hazard and toxicity on non-target organisms are emerging, and associations between GBHs and immune-endocrine disturbances have been described. This review aims to investigate, based on recent epidemiological studies and studies performed in vitro and in vivo in animals, the possible association between GBHs and immune-endocrine alterations. Published data suggest that GBHs have endocrine disrupting potentiality targeting sex and thyroid hormones, although its relevance for humans will require further investigations. Evidence of immunotoxicity are limited compared to those on endocrine effects, but overall highlight possible noxious effects, including lung inflammation and rhinitis. An attractive hypothesis could be the one that connects microbiota dysbiosis with possible immune-endocrine outcomes. Indeed, several intestinal microorganisms express the enzyme EPSPS and, studies are emerging that highlight a possible G-induced dysbiosis. Considering the wide use of GBHs in agriculture, further studies investigating their noxious effects at levels relevant for human exposure should be performed. A critical analysis of emerging evidence of G toxicity is required to better characterize its safety profile. In addition, attention should be paid to the differences between G alone and its formulations, which, containing substances able to increase G absorption, may present a different toxicity profile.
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Affiliation(s)
- Ambra Maddalon
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy
| | - Valentina Galbiati
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy.
| | - Claudio Colosio
- Occupational Health Unit, International Centre for Rural Health, ASST Santi Paolo e Carlo, Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Stefan Mandić-Rajčević
- Occupational Health Unit, International Centre for Rural Health, ASST Santi Paolo e Carlo, Department of Health Sciences, Università degli Studi di Milano, Milan, Italy
| | - Emanuela Corsini
- Laboratory of Toxicology, Department of Environmental and Political Sciences, Università degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy
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28
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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: 109] [Impact Index Per Article: 27.3] [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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Reynoso EC, Peña RD, Reyes D, Chavarin-Pineda Y, Palchetti I, Torres E. Determination of Glyphosate in Water from a Rural Locality in México and Its Implications for the Population Based on Water Consumption and Use Habits. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E7102. [PMID: 32998276 PMCID: PMC7579432 DOI: 10.3390/ijerph17197102] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 12/14/2022]
Abstract
Glyphosate is a broad-spectrum herbicide widely used worldwide. Indeed, it is the herbicide most applied to all Mexican crops. Due to the overuse and poor disposal of the waste, this herbicide can reach the aquatic environments such as groundwater and surface water. Thus, there is a clear need to implement monitoring and surveillance programs for evaluating and controlling the exposure to this herbicide in rural populations. The goal of this study was to quantify the presence of glyphosate in different water bodies (groundwater, surface and drinking water) as well as to identify the uses and managements of water resources by rural communities to evaluate the potential human exposure to glyphosate in the Tenampulco region of the Mexican state of Puebla. Measurements were performed by a rapid and cost-effective ELISA-based method in groundwater and surface water from various sampling sites of the Tenampulco region. Glyphosate was detected in all groundwater samples to be below the maximum limit for glyphosate in water in Mexico. Nevertheless, these results indicate an exposure of glyphosate in these agricultural communities and the need to establish a monitoring program.
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Affiliation(s)
- Eduardo C. Reynoso
- Posgrado en Ciencias Ambientales, Instituto de Ciencias, Benemérita, Universidad Autónoma de Puebla, Puebla 72570, Mexico; (E.C.R.); (Y.C.-P.)
| | - Ricardo D. Peña
- Centro de Quìmica, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico;
| | - Delfino Reyes
- Facultad de Ingeniería Agrohidráulica, Benemérita Universidad Autónoma de Puebla, Av. Universidad s/n, Teziutlán, Puebla 73695, Mexico;
| | - Yaselda Chavarin-Pineda
- Posgrado en Ciencias Ambientales, Instituto de Ciencias, Benemérita, Universidad Autónoma de Puebla, Puebla 72570, Mexico; (E.C.R.); (Y.C.-P.)
| | - Ilaria Palchetti
- Dipartimento di Chimica, Università degli Studi di Firenze, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy;
| | - Eduardo Torres
- Centro de Quìmica, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico;
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A Pilot Study to Assess Inhalation Exposures among Sugarcane Workers in Guatemala: Implications for Chronic Kidney Disease of Unknown Origin. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17165708. [PMID: 32784623 PMCID: PMC7459472 DOI: 10.3390/ijerph17165708] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 08/01/2020] [Accepted: 08/05/2020] [Indexed: 12/16/2022]
Abstract
Background: Sugarcane workers in Central America experience a heavy burden of chronic kidney disease of unknown origin. We conducted a pilot study among worker proxies in Guatemala to characterize exposures to particulate matter, silica, heavy metals, and glyphosate, as well as to examine potential nephrotoxic exposures. Methods: Air, soil, and ash samples were collected and analyzed using scanning electron microscopy, X-ray diffraction, inductively coupled plasma mass spectrometry, and an enzyme-linked immunosorbent assay. Results: The average mass concentration for particulate matter (PM)2.5 and PM100 exposures were 360 µg/m3 (range: 32 to 1500 µg/m3) and 555 µg/m3 (range: 229 to 1170 µg/m3), respectively. The elemental composition of particles was largely silicon. The amount of crystalline silica was below 5 μg, yet the percentage of total silica was ~17% by weight. Putatively, the silica was in the amorphous form. Concentrations of aluminum and calcium ranged from 2–7 μg/m3. Glyphosate was not detectable in analyzed air samples but was detectable at concentrations ranging from 81–165 ppb in soil samples. Conclusion: Sugarcane workers are exposed to high concentrations of particulate matter. Future studies should investigate the potential role of silica, heavy metals, and agrochemicals in the etiology of chronic kidney disease in this population.
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31
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Tang Q, Tang J, Ren X, Li C. Glyphosate exposure induces inflammatory responses in the small intestine and alters gut microbial composition in rats. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 261:114129. [PMID: 32045792 DOI: 10.1016/j.envpol.2020.114129] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 02/02/2020] [Accepted: 02/02/2020] [Indexed: 05/27/2023]
Abstract
Glyphosate is the most popular herbicide used worldwide. This study aimed to investigate the adverse effects of glyphosate on the small intestine and gut microbiota in rats. The rats were gavaged with 0, 5, 50, and 500 mg/kg of body weight glyphosate for 35 continuous days. The different segments of the small intestine were sampled to measure indicators of oxidative stress, ion concentrations and inflammatory responses, and fresh feces were collected for microbiota analysis. The results showed that glyphosate exposure decreased the ratio of villus height to crypt depth in the duodenum and jejunum. Decreased activity of antioxidant enzymes (T-SOD, GSH, GSH-Px) and elevated MDA content were observed in different segments of the small intestine. Furthermore, the concentrations of Fe, Cu, Zn and Mg were significantly decreased or increased. In addition, the mRNA expression levels of IL-1β, IL-6, TNF-α, MAPK3, NF-κB, and Caspase-3 were increased after glyphosate exposure. The 16 S rRNA gene sequencing results indicated that glyphosate exposure significantly increased α-diversity and altered bacterial composition. Glyphosate exposure significantly decreased the relative abundance of the phylum Firmicutes and the genus Lactobacillus, but several potentially pathogenic bacteria were enriched. In conclusion, this study provides important insight to reveal the negative influence of glyphosate exposure on the small intestine, and the altered microbial composition may play a vital role in the process.
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Affiliation(s)
- Qian Tang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Juan Tang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xin Ren
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chunmei Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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32
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Theoharides TC, Tsilioni I, Ren H. Recent advances in our understanding of mast cell activation - or should it be mast cell mediator disorders? Expert Rev Clin Immunol 2019; 15:639-656. [PMID: 30884251 PMCID: PMC7003574 DOI: 10.1080/1744666x.2019.1596800] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 03/14/2019] [Indexed: 02/07/2023]
Abstract
INTRODUCTION An increasing number of patients present with multiple symptoms affecting many organs including the brain due to multiple mediators released by mast cells. These unique tissue immune cells are critical for allergic reactions triggered by immunoglobulin E (IgE), but are also stimulated (not activated) by immune, drug, environmental, food, infectious, and stress triggers, leading to secretion of multiple mediators often without histamine and tryptase. The presentation, diagnosis, and management of the spectrum of mast cell disorders are very confusing. As a result, neuropsychiatric symptoms have been left out, and diagnostic criteria made stricter excluding most patients. Areas covered: A literature search was performed on papers published between January 1990 and November 2018 using MEDLINE. Terms used were activation, antihistamines, atopy, autism, brain fog, heparin, KIT mutation, IgE, inflammation, IL-6, IL-31, IL-37, luteolin, mast cells, mastocytosis, mediators, mycotoxins, release, secretion, tetramethoxyluteolin, and tryptase. Expert opinion: Conditions associated with elevated serum or urine levels of any mast cell mediator, in the absence of comorbidities that could explain elevated levels, should be considered 'Mast Cell Mediator Disorders (MCMD).' Emphasis should be placed on the identification of unique mast cell mediators, and development of drugs or supplements that inhibit their release.
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Affiliation(s)
- Theoharis C. Theoharides
- Molecular Immunopharmacology and Drug Discovery Laboratory, Department of Immunology, Tufts University School of Medicine, Boston, MA, USA
- Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, MA, USA
- Department of Internal Medicine, Tufts University School of Medicine and Tufts Medical Center, Boston, MA, USA
- Department of Psychiatry, Tufts University School of Medicine and Tufts Medical Center, Boston, MA, USA
| | - Irene Tsilioni
- Molecular Immunopharmacology and Drug Discovery Laboratory, Department of Immunology, Tufts University School of Medicine, Boston, MA, USA
| | - Huali Ren
- Department of Otolaryngology, Beijing Electric Power Hospital, Beijing, China
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Pandey A, Dhabade P, Kumarasamy A. Inflammatory Effects of Subacute Exposure of Roundup in Rat Liver and Adipose Tissue. Dose Response 2019; 17:1559325819843380. [PMID: 31205454 PMCID: PMC6537504 DOI: 10.1177/1559325819843380] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 02/19/2019] [Accepted: 03/05/2019] [Indexed: 01/08/2023] Open
Abstract
Roundup is a popular herbicide containing glyphosate as an active ingredient. The formulation of Roundup is speculated to have critical toxic effects, one among which is chronic inflammation. The present study analyzed adverse inflammatory effects in the liver and adipose tissue of rats after a subacute exposure of Roundup. Adult male rats were exposed to various doses of Roundup (0, 5, 10, 25, 50, 100 and 250 mg/kg bodyweight [bw] glyphosate) orally, everyday for 14 days. On day 15, liver and adipose tissues from dosed rats were analyzed for inflammation markers. C-reactive protein in liver, cytokines IL-1β, TNF-α, IL-6, and inflammatory response marker, and prostaglandin–endoperoxide synthase were upregulated in liver and adipose of rats exposed to higher (100 and 250 mg/kg bw/d) doses of Roundup. Cumulatively, our data suggest development of inflammation in lipid and hepatic organs upon exposure to Roundup. Furthermore, liver histological studies showed formation of vacuoles, fibroid tissue, and glycogen depletion in the groups treated with doses of higher Roundup. These observations suggest progression of fatty liver disease in Roundup-treated adult rats. In summary, our data suggest progression of multiorgan inflammation, liver scarring, and dysfunction post short-term exposure of Roundup in adult male rats.
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Affiliation(s)
- Aparamita Pandey
- Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, Karnataka, India
| | - Prachi Dhabade
- Indian Institute of Science Education and Research, Mohali, Punjab, India
| | - Anand Kumarasamy
- Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, Karnataka, India
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Milić M, Žunec S, Micek V, Kašuba V, Mikolić A, Lovaković BT, Semren TŽ, Pavičić I, Čermak AMM, Pizent A, Vrdoljak AL, Valencia-Quintana R, Sánchez-Alarcón J, Želježić D. Oxidative stress, cholinesterase activity, and DNA damage in the liver, whole blood, and plasma of Wistar rats following a 28-day exposure to glyphosate. Arh Hig Rada Toksikol 2018; 69:154-168. [PMID: 29990293 DOI: 10.2478/aiht-2018-69-3114] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 06/01/2018] [Indexed: 11/21/2022] Open
Abstract
In this 28 day-study, we evaluated the effects of herbicide glyphosate administered by gavage to Wistar rats at daily doses equivalent to 0.1 of the acceptable operator exposure level (AOEL), 0.5 of the consumer acceptable daily intake (ADI), 1.75 (corresponding to the chronic population-adjusted dose, cPAD), and 10 mg kg-1 body weight (bw) (corresponding to 100 times the AOEL). At the end of each treatment, the body and liver weights were measured and compared with their baseline values. DNA damage in leukocytes and liver tissue was estimated with the alkaline comet assay. Oxidative stress was evaluated using a battery of endpoints to establish lipid peroxidation via thiobarbituric reactive substances (TBARS) level, level of reactive oxygen species (ROS), glutathione (GSH) level, and the activity of glutathione peroxidase (GSH-Px). Total cholinesterase activity and the activities of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) were also measured. The exposed animals gained less weight than control. Treatment resulted in significantly higher primary DNA damage in the liver cells and leukocytes. Glyphosate exposure significantly lowered TBARS in the liver of the AOEL, ADI, and cPAD groups, and in plasma in the AOEL and cPAD group. AChE was inhibited with all treatments, but the AOEL and ADI groups significantly differed from control. Total ChE and plasma/liver ROS/GSH levels did not significantly differ from control, except for the 35 % decrease in ChE in the AOEL and ADI groups and a significant drop in liver GSH in the cPAD and 100xAOEL groups. AOEL and ADI blood GSH-Px activity dropped significantly, but in the liver it significantly increased in the ADI, cPAD, and 100xAOEL groups vs. control. All these findings show that even exposure to low glyphosate levels can have serious adverse effects and points to a need to change the approach to risk assessment of low-level chronic/sub-chronic glyphosate exposure, where oxidative stress is not necessarily related to the genetic damage and AChE inhibition.
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Affiliation(s)
- Mirta Milić
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Suzana Žunec
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Vedran Micek
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Vilena Kašuba
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Anja Mikolić
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | | | | | - Ivan Pavičić
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | | | - Alica Pizent
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | | | - Rafael Valencia-Quintana
- Laboratorio "Rafael Villalobos-Pietrini" de Toxicología Genómica y Química Ambiental, Facultad de Agrobiología, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Juana Sánchez-Alarcón
- Laboratorio "Rafael Villalobos-Pietrini" de Toxicología Genómica y Química Ambiental, Facultad de Agrobiología, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Davor Želježić
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
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Tang J, Hu P, Li Y, Win-Shwe TT, Li C. Ion Imbalance Is Involved in the Mechanisms of Liver Oxidative Damage in Rats Exposed to Glyphosate. Front Physiol 2017; 8:1083. [PMID: 29311996 PMCID: PMC5742203 DOI: 10.3389/fphys.2017.01083] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 12/08/2017] [Indexed: 12/21/2022] Open
Abstract
Glyphosate (N-phosphonomethyl-glycine, GLP) is the most popular herbicide used worldwide. This study aimed to investigate the effects of glyphosate on rats' liver function and induction of pathological changes in ion levels and oxidative stress in hepatic tissue. Sprague-Dawley rats were treated orally with 0, 5, 50, and 500 mg/kg body weight of the GLP. After 5 weeks of treatment, blood and liver samples were analyzed for biochemical and histomorphological parameters. The various mineral elements content in the organs of the rats were also measured. Significant decreases were shown in the weights of body, liver, kidney and spleen between the control and treatment groups. Changes also happened in the histomorphology of the liver and kidney tissue of GLP-treated rats. The GLP resulted in an elevated level of glutamic-oxalacetic transaminase (GOT), glutamic-pyruvic transaminase (GPT) and IL-1β in the serum. Besides, decreased total superoxide dismutase (T-SOD) activity and increased malondialdehyde (MDA) contents in the serum, liver, and kidney indicated the presence of oxidative stress. Moreover, increase of hydrogen peroxide (H2O2) level and catalase (CAT) activity in the serum and liver and decrease of glutathione (GSH) and lutathione peroxidase (GSH-Px) activity in the kidney tissue further confirmed the occurrence of oxidative stress. The results of RT-PCR showed that the mRNA expressions of IL-1α, IL-1β, IL-6, MAPK3, NF-κB, SIRT1, TNF-α, Keap1, GPX2, and Caspase-3 were significantly increased in the GLP-treated groups compared to the control group. Furthermore, PPARα, DGAT, SREBP1c, and SCD1 mRNA expressions were also remarkably increased in the GLP-treated groups compared to the control group. In addition, aluminum (Al), iron (Fe), copper (Cu), zinc (Zn), and magnesium (Mg) levels were showed a significant difference reduction or increase in rat liver, kidney, spleen, lung, heart, muscle, brain, and fat tissues. These results suggested that glyphosate caused obvious damage to rats' liver and caused various mineral elements content imbalances in various organs of rats. Ion imbalance could weaken antioxidant capacity and involve in the mechanism of liver oxidative damage caused by GLP.
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Affiliation(s)
- Juan Tang
- Jiangsu Province Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Ping Hu
- Jiangsu Province Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yansen Li
- Jiangsu Province Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Tin-Tin Win-Shwe
- Health Effect Assessment Section Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - Chunmei Li
- Jiangsu Province Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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Behavioral impairments following repeated intranasal glyphosate-based herbicide administration in mice. Neurotoxicol Teratol 2017; 64:63-72. [DOI: 10.1016/j.ntt.2017.10.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/12/2017] [Accepted: 10/18/2017] [Indexed: 12/31/2022]
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Hoppin JA, Umbach DM, Long S, London SJ, Henneberger PK, Blair A, Alavanja M, Freeman LEB, Sandler DP. Pesticides are Associated with Allergic and Non-Allergic Wheeze among Male Farmers. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:535-543. [PMID: 27384423 PMCID: PMC5381985 DOI: 10.1289/ehp315] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 04/06/2016] [Accepted: 06/08/2016] [Indexed: 05/07/2023]
Abstract
BACKGROUND Growing evidence suggests that pesticide use may contribute to respiratory symptoms. OBJECTIVE We evaluated the association of currently used pesticides with allergic and non-allergic wheeze among male farmers. METHODS Using the 2005-2010 interview data of the Agricultural Health Study, a prospective study of farmers in North Carolina and Iowa, we evaluated the association between allergic and non-allergic wheeze and self-reported use of 78 specific pesticides, reported by ≥ 1% of the 22,134 men interviewed. We used polytomous regression models adjusted for age, BMI, state, smoking, and current asthma, as well as for days applying pesticides and days driving diesel tractors. We defined allergic wheeze as reporting both wheeze and doctor-diagnosed hay fever (n = 1,310, 6%) and non-allergic wheeze as reporting wheeze but not hay fever (n = 3,939, 18%); men without wheeze were the referent. RESULTS In models evaluating current use of specific pesticides, 19 pesticides were significantly associated (p < 0.05) with allergic wheeze (18 positive, 1 negative) and 21 pesticides with non-allergic wheeze (19 positive, 2 negative); 11 pesticides were associated with both. Seven pesticides (herbicides: 2,4-D and simazine; insecticides: carbaryl, dimethoate, disulfoton, and zeta-cypermethrin; and fungicide pyraclostrobin) had significantly different associations for allergic and non-allergic wheeze. In exposure-response models with up to five exposure categories, we saw evidence of an exposure-response relationship for several pesticides including the commonly used herbicides 2,4-D and glyphosate, the insecticides permethrin and carbaryl, and the rodenticide warfarin. CONCLUSIONS These results for farmers implicate several pesticides that are commonly used in agricultural and residential settings with adverse respiratory effects.
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Affiliation(s)
- Jane A. Hoppin
- Department of Biological Sciences, and
- Center for Human Health and the Environment, North Carolina State University, Raleigh, North Carolina, USA
- Address correspondence to J.A. Hoppin, Department of Biological Sciences, Toxicology Building 1104L, Box 7633, North Carolina State University, Raleigh, NC 27695 USA. Telephone: 919-515-2918. E-mail:
| | - David M. Umbach
- Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
| | | | - Stephanie J. London
- Epidemiology Branch, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
| | - Paul K. Henneberger
- Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | - Aaron Blair
- National Cancer Institute, NIH, DHHS, Rockville, Maryland, USA
| | | | | | - Dale P. Sandler
- Epidemiology Branch, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
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Parks CG, Hoppin JA, De Roos AJ, Costenbader KH, Alavanja MC, Sandler DP. Rheumatoid Arthritis in Agricultural Health Study Spouses: Associations with Pesticides and Other Farm Exposures. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:1728-1734. [PMID: 27285288 PMCID: PMC5089872 DOI: 10.1289/ehp129] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 03/07/2016] [Accepted: 05/24/2016] [Indexed: 05/06/2023]
Abstract
BACKGROUND Farming has been associated with rheumatoid arthritis (RA), but the role of pesticides is not known. OBJECTIVES We examined associations between RA and pesticides or other agricultural exposures among female spouses of licensed pesticide applicators in the Agricultural Health Study. METHODS Women were enrolled between 1993 and 1997 and followed through 2010. Cases (n = 275 total, 132 incident), confirmed by a physician or by self-reported use of disease modifying antirheumatic drugs, were compared with noncases (n = 24,018). Odds ratios (OR) and 95% confidence intervals (CI) were estimated using logistic regression models adjusted for age, state, and smoking pack-years. RESULTS Overall, women with RA were somewhat more likely to have reported lifetime use of any specific pesticide versus no pesticides (OR = 1.4; 95% CI: 1.0, 1.6). Of the 15 pesticides examined, maneb/mancozeb (OR = 3.3; 95% CI: 1.5, 7.1) and glyphosate (OR = 1.4; 95% CI: 1.0, 2.1) were associated with incident RA compared with no pesticide use. An elevated, but non-statistically significant association with incident RA was seen for DDT (OR = 1.9; 95% CI: 0.97, 3.6). Incident RA was also associated with the application of chemical fertilizers (OR = 1.7; 95% CI: 1.1, 2.7) and cleaning with solvents (OR = 1.6; 95% CI: 1.1, 2.4), but inversely associated with lifetime livestock exposure as a child and adult (OR = 0.48; 95% CI: 0.24, 0.97) compared with no livestock exposure. CONCLUSIONS Our results suggest that specific agricultural pesticides, solvents, and chemical fertilizers may increase the risk of RA in women, while exposures involving animal contact may be protective. Citation: Parks CG, Hoppin JA, De Roos AJ, Costenbader KH, Alavanja MC, Sandler DP. 2016. Rheumatoid arthritis in Agricultural Health Study spouses: associations with pesticides and other farm exposures. Environ Health Perspect 124:1728-1734; http://dx.doi.org/10.1289/EHP129.
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Affiliation(s)
- Christine G. Parks
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
- Address correspondence to C.G. Parks, Epidemiology Branch, A3-05, NIEHS, P.O. Box 12233, Research Triangle Park, NC 27599 USA. Telephone: (919) 541-2577. E-mail:
| | - Jane A. Hoppin
- Center for Human Health and the Environment, Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Anneclaire J. De Roos
- Department of Environmental and Occupational Health, Drexel University School of Public Health, Philadelphia, Pennsylvania, USA
| | - Karen H. Costenbader
- Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Michael C. Alavanja
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, USA
| | - Dale P. Sandler
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
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Glufosinate aerogenic exposure induces glutamate and IL-1 receptor dependent lung inflammation. Clin Sci (Lond) 2016; 130:1939-54. [PMID: 27549113 DOI: 10.1042/cs20160530] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 08/22/2016] [Indexed: 11/17/2022]
Abstract
Glufosinate-ammonium (GLA), the active component of an herbicide, is known to cause neurotoxicity. GLA shares structural analogy with glutamate. It is a powerful inhibitor of glutamine synthetase (GS) and may bind to glutamate receptors. Since these potentials targets of GLA are present in lung and immune cells, we asked whether airway exposure to GLA may cause lung inflammation in mice. A single GLA exposure (1 mg/kg) induced seizures and inflammatory cell recruitment in the broncho-alveolar space, and increased myeloperoxidase (MPO), inducible NO synthase (iNOS), interstitial inflammation and disruption of alveolar septae within 6-24 h. Interleukin 1β (IL-1β) was increased and lung inflammation depended on IL-1 receptor 1 (IL-1R1). We demonstrate that glutamate receptor pathway is central, since the N-methyl-D-aspartate (NMDA) receptor inhibitor MK-801 prevented GLA-induced lung inflammation. Chronic exposure (0.2 mg/kg 3× per week for 4 weeks) caused moderate lung inflammation and enhanced airway hyperreactivity with significant increased airway resistance. In conclusion, GLA aerosol exposure causes glutamate signalling and IL-1R-dependent pulmonary inflammation with airway hyperreactivity in mice.
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Beecham JE, Seneff S. Is there a link between autism and glyphosate-formulated herbicides? ACTA ACUST UNITED AC 2016. [DOI: 10.7243/2054-992x-3-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Mesnage R, Defarge N, Spiroux de Vendômois J, Séralini GE. Potential toxic effects of glyphosate and its commercial formulations below regulatory limits. Food Chem Toxicol 2015; 84:133-53. [PMID: 26282372 DOI: 10.1016/j.fct.2015.08.012] [Citation(s) in RCA: 291] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 08/10/2015] [Accepted: 08/11/2015] [Indexed: 01/05/2023]
Abstract
Glyphosate-based herbicides (GlyBH), including Roundup, are the most widely used pesticides worldwide. Their uses have increased exponentially since their introduction on the market. Residue levels in food or water, as well as human exposures, are escalating. We have reviewed the toxic effects of GlyBH measured below regulatory limits by evaluating the published literature and regulatory reports. We reveal a coherent body of evidence indicating that GlyBH could be toxic below the regulatory lowest observed adverse effect level for chronic toxic effects. It includes teratogenic, tumorigenic and hepatorenal effects. They could be explained by endocrine disruption and oxidative stress, causing metabolic alterations, depending on dose and exposure time. Some effects were detected in the range of the recommended acceptable daily intake. Toxic effects of commercial formulations can also be explained by GlyBH adjuvants, which have their own toxicity, but also enhance glyphosate toxicity. These challenge the assumption of safety of GlyBH at the levels at which they contaminate food and the environment, albeit these levels may fall below regulatory thresholds. Neurodevelopmental, reproductive, and transgenerational effects of GlyBH must be revisited, since a growing body of knowledge suggests the predominance of endocrine disrupting mechanisms caused by environmentally relevant levels of exposure.
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Affiliation(s)
- R Mesnage
- University of Caen, Institute of Biology and Network on Risks, Quality and Sustainable Environment (MRSH), Esplanade de la Paix, 14032 Caen Cedex, France; CRIIGEN, 81 rue de Monceau, 75008 Paris, France
| | - N Defarge
- University of Caen, Institute of Biology and Network on Risks, Quality and Sustainable Environment (MRSH), Esplanade de la Paix, 14032 Caen Cedex, France; CRIIGEN, 81 rue de Monceau, 75008 Paris, France
| | | | - G E Séralini
- University of Caen, Institute of Biology and Network on Risks, Quality and Sustainable Environment (MRSH), Esplanade de la Paix, 14032 Caen Cedex, France; CRIIGEN, 81 rue de Monceau, 75008 Paris, France.
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