1
|
Vasseur C, Serra L, El Balkhi S, Lefort G, Ramé C, Froment P, Dupont J. Glyphosate presence in human sperm: First report and positive correlation with oxidative stress in an infertile French population. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 278:116410. [PMID: 38696871 DOI: 10.1016/j.ecoenv.2024.116410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/15/2024] [Accepted: 04/27/2024] [Indexed: 05/04/2024]
Abstract
Environmental exposure to endocrine disruptors, such as pesticides, could contribute to a decline of human fertility. Glyphosate (GLY) is the main component of Glyphosate Based Herbicides (GBHs), which are the most commonly herbicides used in the world. Various animal model studies demonstrated its reprotoxicity. In Europe, GLY authorization in agriculture has been extended until 2034. Meanwhile the toxicity of GLY in humans is still in debate. The aims of our study were firstly to analyse the concentration of GLY and its main metabolite, amino-methyl-phosphonic acid (AMPA) by LC/MS-MS in the seminal and blood plasma in an infertile French men population (n=128). We secondly determined Total Antioxidant Status (TAS) and Total Oxidant Status (TOS) using commercial colorimetric kits and some oxidative stress biomarkers including malondialdehyde (MDA) and 8-hydroxy-2'-deoxyguanosine (8-OHdG) by ELISA assays. We next analysed potential correlations between GLY and oxidative stress biomarkers concentration and sperm parameters (sperm concentration, progressive speed, anormal forms). Here, we detected for the first time GLY in the human seminal plasma in significant proportions and we showed that its concentration was four times higher than those observed in blood plasma. At the opposite, AMPA was undetectable. We also observed a strong positive correlation between plasma blood GLY concentrations and plasma seminal GLY and 8-OHdG concentrations, the latter reflecting DNA impact. In addition, TOS, Oxidative Stress Index (OSI) (TOS/TAS), MDA blood and seminal plasma concentrations were significantly higher in men with glyphosate in blood and seminal plasma, respectively. Taken together, our results suggest a negative impact of GLY on the human reproductive health and possibly on his progeny. A precaution principle should be applied at the time of the actual discussion of GLY and GBHs formulants uses in Europe by the authorities.
Collapse
Affiliation(s)
- Claudine Vasseur
- Centre de fertilité, Pôle Santé Léonard de Vinci, Chambray-lès-Tours, France.
| | - Loïse Serra
- CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly F-37380, France
| | - Souleiman El Balkhi
- Service de Pharmacologie, Toxicologie et Pharmacovigilance, Limoges, CHU F-87042, France
| | - Gaëlle Lefort
- CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly F-37380, France
| | - Christelle Ramé
- CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly F-37380, France
| | - Pascal Froment
- CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly F-37380, France
| | - Joëlle Dupont
- CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly F-37380, France.
| |
Collapse
|
2
|
de Morais Valentim JMB, Coradi C, Viana NP, Fagundes TR, Micheletti PL, Gaboardi SC, Fadel B, Pizzatti L, Candiotto LZP, Panis C. Glyphosate as a Food Contaminant: Main Sources, Detection Levels, and Implications for Human and Public Health. Foods 2024; 13:1697. [PMID: 38890925 PMCID: PMC11171990 DOI: 10.3390/foods13111697] [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: 04/02/2024] [Revised: 05/20/2024] [Accepted: 05/22/2024] [Indexed: 06/20/2024] Open
Abstract
Glyphosate is a broad-spectrum pesticide that has become the most widely used herbicide globally. However, concerns have risen regarding its potential health impacts due to food contamination. Studies have detected glyphosate in human blood and urine samples, indicating human exposure and its persistence in the organism. A growing body of literature has reported the health risks concerning glyphosate exposure, suggesting that the daily intake of contaminated food and water poses a public health concern. Furthermore, countries with high glyphosate usage and lenient regulations regarding food and water contamination may face more severe consequences. In this context, in this review, we examined the literature regarding food contamination by glyphosate, discussed its detection methods, and highlighted its risks to human health.
Collapse
Affiliation(s)
| | - Carolina Coradi
- Center of Health Sciences, Universidade Estadual do Oeste do Paraná (UNIOESTE), Francisco Beltrão 85605-010, Brazil; (C.C.); (N.P.V.); (P.L.M.); (S.C.G.); (L.Z.P.C.)
| | - Natália Prudêncio Viana
- Center of Health Sciences, Universidade Estadual do Oeste do Paraná (UNIOESTE), Francisco Beltrão 85605-010, Brazil; (C.C.); (N.P.V.); (P.L.M.); (S.C.G.); (L.Z.P.C.)
| | - Tatiane Renata Fagundes
- Department of Biological Sciences, Universidade Estadual do Norte do Paraná (UENP), Bandeirantes 86360-000, Brazil;
| | - Pâmela Lonardoni Micheletti
- Center of Health Sciences, Universidade Estadual do Oeste do Paraná (UNIOESTE), Francisco Beltrão 85605-010, Brazil; (C.C.); (N.P.V.); (P.L.M.); (S.C.G.); (L.Z.P.C.)
| | - Shaiane Carla Gaboardi
- Center of Health Sciences, Universidade Estadual do Oeste do Paraná (UNIOESTE), Francisco Beltrão 85605-010, Brazil; (C.C.); (N.P.V.); (P.L.M.); (S.C.G.); (L.Z.P.C.)
- Instituto Federal Catarinense, Blumenau 89070-270, Brazil
| | - Bruna Fadel
- Laboratório de Biologia Molecular e Proteômica do Sangue, Instituto de Química, Universidade Federal do Rio de Janeiro (IQ-UFRJ), Rio de Janeiro 21941-909, Brazil; (B.F.); (L.P.)
| | - Luciana Pizzatti
- Laboratório de Biologia Molecular e Proteômica do Sangue, Instituto de Química, Universidade Federal do Rio de Janeiro (IQ-UFRJ), Rio de Janeiro 21941-909, Brazil; (B.F.); (L.P.)
| | - Luciano Zanetti Pessoa Candiotto
- Center of Health Sciences, Universidade Estadual do Oeste do Paraná (UNIOESTE), Francisco Beltrão 85605-010, Brazil; (C.C.); (N.P.V.); (P.L.M.); (S.C.G.); (L.Z.P.C.)
| | - Carolina Panis
- Department of Pathological Sciences, Universidade Estadual de Londrina (UEL), Londrina 86057-970, Brazil;
- Center of Health Sciences, Universidade Estadual do Oeste do Paraná (UNIOESTE), Francisco Beltrão 85605-010, Brazil; (C.C.); (N.P.V.); (P.L.M.); (S.C.G.); (L.Z.P.C.)
| |
Collapse
|
3
|
Chang VC, Ospina M, Xie S, Andreotti G, Parks CG, Liu D, Madrigal JM, Ward MH, Rothman N, Silverman DT, Sandler DP, Friesen MC, Beane Freeman LE, Calafat AM, Hofmann JN. Urinary biomonitoring of glyphosate exposure among male farmers and nonfarmers in the Biomarkers of Exposure and Effect in Agriculture (BEEA) study. ENVIRONMENT INTERNATIONAL 2024; 187:108644. [PMID: 38636272 DOI: 10.1016/j.envint.2024.108644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 04/20/2024]
Abstract
Glyphosate is the most widely applied herbicide worldwide. Glyphosate biomonitoring data are limited for agricultural settings. We measured urinary glyphosate concentrations and assessed exposure determinants in the Biomarkers of Exposure and Effect in Agriculture (BEEA) study. We selected four groups of BEEA participants based on self-reported pesticide exposure: recently exposed farmers with occupational glyphosate use in the last 7 days (n = 98), farmers with high lifetime glyphosate use (>80th percentile) but no use in the last 7 days (n = 70), farming controls with minimal lifetime use (n = 100), and nonfarming controls with no occupational pesticide exposures and no recent home/garden glyphosate use (n = 100). Glyphosate was quantified in first morning void urine using ion chromatography isotope-dilution tandem mass spectrometry. We estimated associations between urinary glyphosate concentrations and potential determinants using multivariable linear regression. Glyphosate was detected (≥0.2 µg/L) in urine of most farmers with recent (91 %) and high lifetime (93 %) use, as well as farming (88 %) and nonfarming (81 %) controls; geometric mean concentrations were 0.89, 0.59, 0.46, and 0.39 µg/L (0.79, 0.51, 0.42, and 0.37 µg/g creatinine), respectively. Compared with both control groups, urinary glyphosate concentrations were significantly elevated among recently exposed farmers (P < 0.0001), particularly those who used glyphosate in the previous day [vs. nonfarming controls; geometric mean ratio (GMR) = 5.46; 95 % confidence interval (CI): 3.75, 7.93]. Concentrations among high lifetime exposed farmers were also elevated (P < 0.01 vs. nonfarming controls). Among recently exposed farmers, glyphosate concentrations were higher among those not wearing gloves when applying glyphosate (GMR = 1.91; 95 % CI: 1.17, 3.11), not wearing long-sleeved shirts when mixing/loading glyphosate (GMR = 2.00; 95 % CI: 1.04, 3.86), applying glyphosate exclusively using broadcast/boom sprayers (vs. hand sprayer only; GMR = 1.70; 95 % CI: 1.00, 2.92), and applying glyphosate to crops (vs. non-crop; GMR = 1.72; 95 % CI: 1.04, 2.84). Both farmers and nonfarmers are exposed to glyphosate, with recency of occupational glyphosate use being the strongest determinant of urinary glyphosate concentrations. Continued biomonitoring of glyphosate in various settings is warranted.
Collapse
Affiliation(s)
- Vicky C Chang
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Maria Ospina
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Shuai Xie
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Gabriella Andreotti
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Christine G Parks
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC, USA
| | - Danping Liu
- Biostatistics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jessica M Madrigal
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Mary H Ward
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Nathaniel Rothman
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Debra T Silverman
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Dale P Sandler
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC, USA
| | - Melissa C Friesen
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Laura E Beane Freeman
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Jonathan N Hofmann
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
4
|
Liu J, Wang L, Li S, Lin Z, Yang G, Miao Z. Association of urine glyphosate levels with renal injury biomarkers in children living close to major vegetable-producing regions in China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168677. [PMID: 38007119 DOI: 10.1016/j.scitotenv.2023.168677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 11/27/2023]
Abstract
Glyphosate (GLY)-based herbicides exposure contributes to renal dysfunction in experimental conditions, but the effects on humans are rarely reported. Biomonitoring is practically relevant for evaluating the association of urine GLY levels and renal damage in children living close to vegetable-cultivating regions. In this study, we collected the first-morning void urine samples of 239 healthy children (aged 3-12, 48.12 % boys) living near major vegetable-producing regions in March-May and August 2023 in Shandong Province, China. Urine levels of GLY and kidney injury-associated biomarkers were determined using ELISA kits to assess their correlation. GLY was detected in 92.05 % of urine samples (220 out of 239 participants) and the geometric concentration (GM) was 7.429 μg/L (range: 0.625 to 38.267 μg/L). Binary logistic regression and multivariate regression analysis revealed GLY detectability and levels positively correlated with home ventilation and self-producing vegetable intake of the subjects, as well as sampling periods. Moreover, a statistically significant concentration association with urine GLY was found for kidney injury-associated biomarkers (NGAL and KIM-1) (R2 = 0.923 and 0.855, respectively). Additionally, risk assessment revealed that the maximum value of probable daily intake was 0.150 mg/kg bw/day, accounting for 30.1 % of the established Acceptable Daily Intake of GLY. This study unveils a positive correlation between continuous GLY-based herbicide exposure and renal injury biomarkers of children. A large-scale epidemiological study is warranted for comprehensively assessing the effects of GLY-based herbicides on kidney function of the entire public.
Collapse
Affiliation(s)
- Jingbo Liu
- College of Biological and Brewing Engineering, Taishan University, Tai'an City, China.
| | - Lei Wang
- The Second Children & Women's Healthcare of Ji'nan City, Laiwu City, China
| | - Song Li
- College of Basic Medicine, Shandong First Medical University, Ji'nan City, China
| | - Zhenxian Lin
- College of Biological and Brewing Engineering, Taishan University, Tai'an City, China
| | - Guangcheng Yang
- College of Biological and Brewing Engineering, Taishan University, Tai'an City, China
| | - Zengmin Miao
- College of Life Sciences, Shandong First Medical University, Tai'an City, China.
| |
Collapse
|
5
|
Wei X, Pan Y, Zhang Z, Cui J, Yin R, Li H, Qin J, Li AJ, Qiu R. Biomonitoring of glyphosate and aminomethylphosphonic acid: Current insights and future perspectives. JOURNAL OF HAZARDOUS MATERIALS 2024; 463:132814. [PMID: 37890382 DOI: 10.1016/j.jhazmat.2023.132814] [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: 07/03/2023] [Revised: 09/28/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023]
Abstract
Glyphosate is one of the most widely used herbicides globally, raising concerns about its potential impact on human health. Biomonitoring studies play a crucial role in assessing human exposure to glyphosate and providing valuable insights into its distribution and metabolism in the body. This review aims to summarize the current trends and future perspectives in biomonitoring of glyphosate and its major degradation product of aminomethylphosphonic acid (AMPA). A comprehensive literature search was conducted, focusing on studies published between January 2000 and December 2022. The findings demonstrated that glyphosate and AMPA have been reported in different human specimens with urine as the dominance. Sample pretreatment techniques of solid-phase and liquid-liquid extractions coupled with liquid/gas chromatography-tandem mass spectrometry have achieved matrix elimination and accurate analysis. We also examined and compared the exposure characteristics of these compounds among different regions and various populations, with significantly higher levels of glyphosate and AMPA observed in Asian populations and among occupational groups. The median urinary concentration of glyphosate in children was 0.54 ng/mL, which was relatively higher than those in women (0.28 ng/mL) and adults (0.12 ng/mL). It is worth noting that children may exhibit increased susceptibility to glyphosate exposure or have different exposure patterns compared to women and adults. A number of important perspectives were proposed in order to further facilitate the understanding of health effects of glyphosate and AMPA, which include, but are not limited to, method standardization, combined exposure assessment, attention for vulnerable populations, long-term exposure effects and risk communication and public awareness.
Collapse
Affiliation(s)
- Xin Wei
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Yanan Pan
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Ziqi Zhang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Jingyi Cui
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Renli Yin
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Huashou Li
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Junhao Qin
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Adela Jing Li
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
| | - Rongliang Qiu
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| |
Collapse
|
6
|
Curl CL, Hyland C, Spivak M, Sheppard L, Lanphear B, Antoniou MN, Ospina M, Calafat AM. The Effect of Pesticide Spray Season and Residential Proximity to Agriculture on Glyphosate Exposure among Pregnant People in Southern Idaho, 2021. ENVIRONMENTAL HEALTH PERSPECTIVES 2023; 131:127001. [PMID: 38054699 PMCID: PMC10699167 DOI: 10.1289/ehp12768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 09/20/2023] [Accepted: 10/17/2023] [Indexed: 12/07/2023]
Abstract
BACKGROUND Glyphosate is one of the most heavily used pesticides in the world, but little is known about sources of glyphosate exposure in pregnant people living in agricultural regions. OBJECTIVE Our objective was to evaluate glyphosate exposure during pregnancy in relation to residential proximity to agriculture as well as agricultural spray season. METHODS We quantified glyphosate concentrations in 453 urine samples collected biweekly from a cohort of 40 pregnant people in southern Idaho from February through December 2021. We estimated each participant's glyphosate exposure as the geometric mean (GM) of glyphosate concentrations measured in all samples (average n = 11 samples/participant), as well as the GM of samples collected during the pesticide "spray season" (defined as those collected 1 May-15 August; average n = 5 samples/participant) and the "nonspray season" (defined as those collected before 1 May or after 15 August; average n = 6 samples/participant). We defined participants who resided < 0.5 km from an actively cultivated agriculture field to live "near fields" and those residing ≥ 0.5 km from an agricultural field to live "far from fields" (n = 22 and 18, respectively). RESULTS Among participants living near fields, urinary glyphosate was detected more frequently and at significantly increased GM concentrations during the spray season in comparison with the nonspray season (81% vs. 55%; 0.228 μ g / L vs. 0.150 μ g / L , p < 0.001 ). In contrast, among participants who lived far from fields, neither glyphosate detection frequency nor GMs differed in the spray vs nonspray season (66% vs. 64%; 0.154 μ g / L vs. 0.165 μ g / L , p = 0.45 ). Concentrations did not differ by residential proximity to fields during the nonspray season (0.154 μ g / L vs. 0.165 μ g / L , for near vs. far, p = 0.53 ). DISCUSSION Pregnant people living near agriculture fields had significantly increased urinary glyphosate concentrations during the agricultural spray season than during the nonspray season. They also had significantly higher urinary glyphosate concentrations during the spray season than those who lived far from agricultural fields at any time of year, but concentrations did not differ during the nonspray season. These findings suggest that agricultural glyphosate spray is a source of exposure for people living near fields. https://doi.org/10.1289/EHP12768.
Collapse
Affiliation(s)
- Cynthia L. Curl
- School of Public and Population Health, Boise State University, Boise, Idaho, USA
| | - Carly Hyland
- School of Public and Population Health, Boise State University, Boise, Idaho, USA
- Division of Environmental Health Sciences, School of Public Health, University of California Berkeley, Berkeley, CA, USA
- Division of Agriculture and National Resources, University of California, Berkeley, CA, USA
| | - Meredith Spivak
- School of Public and Population Health, Boise State University, Boise, Idaho, USA
| | - Lianne Sheppard
- School of Public Health, University of Washington, Seattle, Washington, USA
| | - Bruce Lanphear
- Simon Fraser University, Vancouver, British Columbia, Canada
| | - Michael N. Antoniou
- Gene Expression and Therapy Group, Department of Medical and Molecular Genetics, King’s College London, London, UK
- Life Sciences and Medicine, Guy’s Hospital, London, UK
| | - Maria Ospina
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Antonia M. Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| |
Collapse
|
7
|
Grau D, Grau N, Paroissin C, Gascuel Q, Di Cristofaro J. Underestimation of glyphosate intake by the methods currently used by regulatory agencies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:100626-100637. [PMID: 37639106 DOI: 10.1007/s11356-023-29463-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 08/18/2023] [Indexed: 08/29/2023]
Abstract
The acceptable daily intake (ADI) is an estimate of the amount of a substance in food or beverages that can be consumed daily over a lifetime without presenting an appreciable risk to health. To assess the risk of ingesting glyphosate, regulatory agencies compare glyphosate daily intake to ADI. Based on published data on urine glyphosate levels measured according to known quantities of ingested glyphosate, our objectives were to test the robustness of the mathematical model currently used to calculate glyphosate daily intake, and to propose alternative models based on urinary excretion kinetics. Our results support that the quantity of ingested glyphosate is systematically underestimated by the model currently used by regulatory agencies, whereas the other models evaluated showed better estimations, with differences according to gender. Our results also show a great variability between individuals, leading to some uncertainties notably with regards to the ADI, and further support that glyphosate excretion varies significantly among individuals who follow a similar dosing regimen. In conclusion, our study highlights the lack of reliability of assessment processes carried out by regulatory agencies for glyphosate in particular, and pesticides in general, and questions the relevance of such processes supposed to safeguard human health and the environment.
Collapse
Affiliation(s)
- Daniel Grau
- Association Campagne Glyphosate, Foix, France
| | - Nicole Grau
- Association Campagne Glyphosate, Foix, France
| | | | | | | |
Collapse
|
8
|
Assessment of Genetic Damage Induced via Glyphosate and Three Commercial Formulations with Adjuvants in Human Blood Cells. Int J Mol Sci 2023; 24:ijms24054560. [PMID: 36901992 PMCID: PMC10003414 DOI: 10.3390/ijms24054560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/13/2023] [Accepted: 02/22/2023] [Indexed: 03/02/2023] Open
Abstract
There is considerable controversy regarding the genotoxicity of glyphosate (N-(phosphonomethyl) glycine). It has been suggested that the genotoxicity of this herbicide is increased by the adjuvants added to commercial formulations based on glyphosate. The effect of various concentrations of glyphosate and three commercial glyphosate-based herbicides (GBH) on human lymphocytes was evaluated. Human blood cells were exposed to glyphosates of 0.1, 1, 10 and 50 mM as well as to equivalent concentrations of glyphosate on commercial formulations. Genetic damage (p < 0.05) was observed in all concentrations with glyphosate and with FAENA and TACKLE formulations. These two commercial formulations showed genotoxicity that was concentration-dependent but in a higher proportion compared to pure glyphosate only. Higher glyphosate concentrations increased the frequency and range of tail lengths of some migration groups, and the same was observed for FAENA and TACKLE, while in CENTELLA the migration range decreased but the frequency of migration groups increased. We show that pure glyphosate and commercial GBH (FAENA, TACKLE and CENTELLA) gave signals of genotoxicity in human blood samples in the comet assay. The genotoxicity increased in the formulations, indicating genotoxic activity also in the added adjuvants present in these products. The use of the MG parameter allowed us to detect a certain type of genetic damage associated with different formulations.
Collapse
|
9
|
Ashley-Martin J, Huang R, MacPherson S, Brion O, Owen J, Gaudreau E, Bienvenu JF, Fisher M, Borghese MM, Bouchard MF, Lanphear B, Foster WG, Arbuckle TE. Urinary concentrations and determinants of glyphosate and glufosinate in pregnant Canadian participants in the MIREC study. ENVIRONMENTAL RESEARCH 2023; 217:114842. [PMID: 36410462 DOI: 10.1016/j.envres.2022.114842] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/26/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Glyphosate is the most widely applied herbicide in agriculture. Glufosinate is a broad spectrum herbicide used to manage glyphosate-resistant weeds. Despite the widespread use of these herbicides, biomonitoring data - which inform risk assessment and management - are sparse. OBJECTIVES To identify determinants of urinary concentrations of these herbicides and their metabolites in pregnancy. METHODS We measured urinary concentrations of glyphosate, glufosinate, and their primary metabolites aminomethylphosphonic acid (AMPA) and 3-methylphosphinicopropionic acid (3-MPPA) in a single spot urine specimen collected during the first trimester of pregnancy from the Maternal-Infant Research on Environmental Chemicals (MIREC) study. MIREC recruited about 2000 pregnant women from 10 Canadian cities between 2008 and 2011. We used UItra-Performance Liquid Chromatography coupled to tandem mass spectrometry (UPLC-MS/MS) with sensitive limits of detection to quantify analyte concentrations. We examined urinary concentrations according to maternal sociodemographics, sample collection characteristics, reported pesticide use, and consumption of fruits, vegetables, legumes, and grain products. We used ANOVA models with specific gravity-standardized chemical concentrations as the dependent variable to determine associations with maternal and sample determinants. RESULTS Among women with biobanked urine samples (n = 1829-1854), 74% and 72% had detectable concentrations of glyphosate and AMPA, respectively. In contrast, one and six percent of women had detectable concentrations of glufosinate and 3-MPPA, respectively. The specific gravity-standardized geometric mean (95% CI) concentrations of glyphosate and AMPA were 0.112 (0.099-0.127) μg/L and 0.159 (0.147-0.172) μg/L, respectively. We observed a dose-response relationship between consumption of whole grain bread and higher urinary glyphosate concentrations. Season of urine collection and self-reported pesticide use were not associated with increased concentrations of any analyte. CONCLUSIONS We detected glyphosate and AMPA in the majority of pregnant women from this predominantly urban Canadian cohort. Diet was a probable route of exposure.
Collapse
Affiliation(s)
- Jillian Ashley-Martin
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Rong Huang
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Susan MacPherson
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Orly Brion
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - James Owen
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Eric Gaudreau
- INSPQ, Centre de Toxicologie du Québec, Direction de la Santé Environnementale et de la Toxicologie, Quebec, QC, G1V 5B3, Canada.
| | - Jean-Francois Bienvenu
- INSPQ, Centre de Toxicologie du Québec, Direction de la Santé Environnementale et de la Toxicologie, Quebec, QC, G1V 5B3, Canada.
| | - Mandy Fisher
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Michael M Borghese
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| | - Maryse F Bouchard
- University of Montreal, Department of Environmental Health and Occupational Health, Montreal, QC, H3T 1J4, Canada.
| | - Bruce Lanphear
- Simon Fraser, Faculty of Health Sciences, Burnaby, BC V5A 1S6, Canada.
| | - Warren G Foster
- McMaster University, Department of Obstetrics & Gynecology, Hamilton, ON, L8S 4L8, Canada.
| | - Tye E Arbuckle
- Population Studies Division, Environmental Health, Research Science Bureau, Health Ottawa, ON, K1A 0K9, Canada.
| |
Collapse
|
10
|
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.
Collapse
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
| |
Collapse
|