Briana N.C. Chronister , Denise Justo , Robert Wood , Dolores Lopez-Paredes , Eduardo Gonzalez , Jose Suarez-Torres , Sheila Gahagan , Danilo Martinez , David R. Jacobs (Jr.) , Harvey Checkoway , Marta M. Jankowska , Jose R. Suarez-Lopez
{"title":"Sex and adrenal hormones in association with insecticide biomarkers among adolescents living in ecuadorian agricultural communities","authors":"Briana N.C. Chronister , Denise Justo , Robert Wood , Dolores Lopez-Paredes , Eduardo Gonzalez , Jose Suarez-Torres , Sheila Gahagan , Danilo Martinez , David R. Jacobs (Jr.) , Harvey Checkoway , Marta M. Jankowska , Jose R. Suarez-Lopez","doi":"10.1016/j.ijheh.2024.114386","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p>Organophosphate, pyrethroid, and neonicotinoid insecticides have resulted in adrenal and gonadal hormone disruption in animal and <em>in vitro</em> studies; limited epidemiologic evidence exists in humans. We assessed relationships of urinary insecticide metabolite concentrations with adrenal and gonadal hormones in adolescents living in Ecuadorean agricultural communities.</p></div><div><h3>Methods</h3><p>In 2016, we examined 522 Ecuadorian adolescents (11-17y, 50.7% female, 22% Indigenous; ESPINA study). We measured urinary insecticide metabolites, blood acetylcholinesterase activity (AChE), and salivary testosterone, dehydroepiandrosterone (DHEA), 17β-estradiol, and cortisol. We used general linear models to assess linear (β = % hormone difference per 50% increase of metabolite concentration) and curvilinear relationships (β<sup>2</sup> = hormone difference per unit increase in squared ln-metabolite) between ln-metabolite or AChE and ln-hormone concentrations, stratified by sex, adjusting for anthropometric, demographic, and awakening response variables. Bayesian Kernel Machine Regression was used to assess non-linear associations and interactions.</p></div><div><h3>Results</h3><p>The organophosphate metabolite malathion dicarboxylic acid (MDA) had positive associations with testosterone (β<sub>boys</sub> = 5.88% [1.21%, 10.78%], β<sub>girls</sub> = 4.10% [-0.02%, 8.39%]), and cortisol (β<sub>boys</sub> = 6.06 [-0.23%, 12.75%]. <em>Para-</em>nitrophenol (organophosphate) had negatively-trending curvilinear associations, with testosterone (β<sup>2</sup><sub>boys</sub> = −0.17 (−0.33, −0.003), p = 0.04) and DHEA (β<sup>2</sup><sub>boys</sub> = −0.49 (−0.80, −0.19), p = 0.001) in boys. The neonicotinoid summary score (β<sub>boys</sub> = 5.60% [0.14%, 11.36%]) and the neonicotinoid acetamiprid-N-desmethyl (β<sub>boys</sub> = 3.90% [1.28%, 6.58%]) were positively associated with 17β-estradiol, measured in boys only. No associations between the pyrethroid 3-phenoxybenzoic acid and hormones were observed. In girls, bivariate response associations identified interactions of MDA, <em>Para-</em>nitrophenol, and 3,5,6-trichloro-2-pyridinol (organophosphates) with testosterone and DHEA concentrations. In boys, we observed an interaction of MDA and <em>Para-</em>nitrophenol with DHEA. No associations were identified for AChE.</p></div><div><h3>Conclusions</h3><p>We observed evidence of endocrine disruption for specific organophosphate and neonicotinoid metabolite exposures in adolescents. Urinary organophosphate metabolites were associated with testosterone and DHEA concentrations, with stronger associations in boys than girls. Urinary neonicotinoids were positively associated with 17β-estradiol. Longitudinal repeat-measures analyses would be beneficial for causal inference.</p></div>","PeriodicalId":13994,"journal":{"name":"International journal of hygiene and environmental health","volume":null,"pages":null},"PeriodicalIF":4.5000,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International journal of hygiene and environmental health","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1438463924000671","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"INFECTIOUS DISEASES","Score":null,"Total":0}
引用次数: 0
Abstract
Background
Organophosphate, pyrethroid, and neonicotinoid insecticides have resulted in adrenal and gonadal hormone disruption in animal and in vitro studies; limited epidemiologic evidence exists in humans. We assessed relationships of urinary insecticide metabolite concentrations with adrenal and gonadal hormones in adolescents living in Ecuadorean agricultural communities.
Methods
In 2016, we examined 522 Ecuadorian adolescents (11-17y, 50.7% female, 22% Indigenous; ESPINA study). We measured urinary insecticide metabolites, blood acetylcholinesterase activity (AChE), and salivary testosterone, dehydroepiandrosterone (DHEA), 17β-estradiol, and cortisol. We used general linear models to assess linear (β = % hormone difference per 50% increase of metabolite concentration) and curvilinear relationships (β2 = hormone difference per unit increase in squared ln-metabolite) between ln-metabolite or AChE and ln-hormone concentrations, stratified by sex, adjusting for anthropometric, demographic, and awakening response variables. Bayesian Kernel Machine Regression was used to assess non-linear associations and interactions.
Results
The organophosphate metabolite malathion dicarboxylic acid (MDA) had positive associations with testosterone (βboys = 5.88% [1.21%, 10.78%], βgirls = 4.10% [-0.02%, 8.39%]), and cortisol (βboys = 6.06 [-0.23%, 12.75%]. Para-nitrophenol (organophosphate) had negatively-trending curvilinear associations, with testosterone (β2boys = −0.17 (−0.33, −0.003), p = 0.04) and DHEA (β2boys = −0.49 (−0.80, −0.19), p = 0.001) in boys. The neonicotinoid summary score (βboys = 5.60% [0.14%, 11.36%]) and the neonicotinoid acetamiprid-N-desmethyl (βboys = 3.90% [1.28%, 6.58%]) were positively associated with 17β-estradiol, measured in boys only. No associations between the pyrethroid 3-phenoxybenzoic acid and hormones were observed. In girls, bivariate response associations identified interactions of MDA, Para-nitrophenol, and 3,5,6-trichloro-2-pyridinol (organophosphates) with testosterone and DHEA concentrations. In boys, we observed an interaction of MDA and Para-nitrophenol with DHEA. No associations were identified for AChE.
Conclusions
We observed evidence of endocrine disruption for specific organophosphate and neonicotinoid metabolite exposures in adolescents. Urinary organophosphate metabolites were associated with testosterone and DHEA concentrations, with stronger associations in boys than girls. Urinary neonicotinoids were positively associated with 17β-estradiol. Longitudinal repeat-measures analyses would be beneficial for causal inference.
期刊介绍:
The International Journal of Hygiene and Environmental Health serves as a multidisciplinary forum for original reports on exposure assessment and the reactions to and consequences of human exposure to the biological, chemical, and physical environment. Research reports, short communications, reviews, scientific comments, technical notes, and editorials will be peer-reviewed before acceptance for publication. Priority will be given to articles on epidemiological aspects of environmental toxicology, health risk assessments, susceptible (sub) populations, sanitation and clean water, human biomonitoring, environmental medicine, and public health aspects of exposure-related outcomes.