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Tan MY, Wu S, Zhu SX, Jiang LH. Association between exposure to organophosphorus pesticide and suicidal ideation among U.S. adults: A population-based study. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 281:116572. [PMID: 38896903 DOI: 10.1016/j.ecoenv.2024.116572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/27/2024] [Accepted: 06/05/2024] [Indexed: 06/21/2024]
Abstract
OBJECTIVE This study aims to investigate the potential link between exposure to organophosphorus pesticides (OPPs) and suicidal ideation (SI) among adults. METHODS This study encompassed four cycles of the National Health and Nutrition Examination Survey (NHANES), involving 5244 participants aged 20 and above. SI was assessed using the Patient Health Questionnaire-9. The levels of exposure to OPPs were estimated by analyzing concentrations of OPP metabolites in urine samples. Multivariate logistic regression models were used to explore the association between exposure to each OPP and SI. Stratified analyses and interaction tests were conducted across various groups, including pairwise combinations of gender and age, as well as body mass index, smoking status, hypertension, and diabetes. Weighted Quantile Sum (WQS) regression and Bayesian Kernel Machine Regression (BKMR) models were applied to assess the cumulative impact of exposure to the four OPPs on SI, along with their respective contributions. Additionally, the potential interactions among these four OPPs were evaluated. RESULTS Multivariate logistic regression revealed that only dimethylthiophosphate (DMTP) among OPPs demonstrated a statistically significant positive association with SI [OR: 1.18; 95 % CI: 1.02-1.37]. Stratified analyses indicated that the influence of OPPs on SI was particularly pronounced in young and older men. The WQS regression analysis revealed a statistically significant association between the mixed metabolites of OPPs and SI [OR = 1.10, 95 % CI: 1.04-1.16], with DMTP (weighted 0.63) contributing the most. Furthermore, the BKMR model supported a positive trend in the overall impact of these OPP metabolites on SI, displaying notable individual exposure-response relationships for DMTP (PIP: 0.77). CONCLUSIONS Our study suggests an association between exposure to DMTP and an increased risk of SI. Specifically, young adult males and older males appear particularly susceptible to the effects of OPP exposure.
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Affiliation(s)
- Mo-Yao Tan
- Chengdu Integrated TCM and Western Medicine Hospital, Chengdu, Sichuan, China
| | - Shan Wu
- Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Si-Xuan Zhu
- Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Li-Hai Jiang
- Chengdu Integrated TCM and Western Medicine Hospital, Chengdu, Sichuan, China.
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Berroug L, Laaroussi M, Essaidi O, Malqui H, Anarghou H, Chaoui AA, Najimi M, Chigr F. Sex-specific neurobehavioral and biochemical effects of developmental exposure to Malathion in offspring mice. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:2215-2231. [PMID: 37804342 DOI: 10.1007/s00210-023-02749-2] [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: 07/03/2023] [Accepted: 09/25/2023] [Indexed: 10/09/2023]
Abstract
Malathion is an organophosphate pesticide (OP) commonly used in agriculture, industry, and veterinary medicine. Sex is a crucial factor in responding to neurotoxicants, yet the sex-specific effects of OP exposure, particularly neurological impairments following chronic low-level exposure remains limited. Our study aims to evaluate the neurobehavioral and biochemical effects of developmental exposure to Malathion across sexes. Pregnant mice were exposed to a low oral dose of Malathion from gestation up to the weaning of the pups, which were individually gavaged with a similar dose regimen until postnatal day 70. Our results show that Malathion decreased body weight and food intake, reduced locomotor activity and recognition memory. Motor coordination and special memory were only altered in females, whereas we found a male-specific effect of Malathion on social behavior and marble burying. These alterations were accompanied by increased malondialdehyde (MDA), decreased brain acetylcholinesterase activity (AChE), and disrupted brain redox homeostasis. Our findings about the effects of Malathion exposure across sexes may, in part, contribute to understanding the dimorphic susceptibilities observed in neurological disorders.
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Affiliation(s)
- Laila Berroug
- Biological Engineering Laboratory, Faculty of Science and Technology, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Meriem Laaroussi
- Biological Engineering Laboratory, Faculty of Science and Technology, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Oumaima Essaidi
- Biological Engineering Laboratory, Faculty of Science and Technology, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Hafsa Malqui
- Biological Engineering Laboratory, Faculty of Science and Technology, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Hammou Anarghou
- Biological Engineering Laboratory, Faculty of Science and Technology, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Ahmed Ait Chaoui
- Biological Engineering Laboratory, Faculty of Science and Technology, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Mohamed Najimi
- Biological Engineering Laboratory, Faculty of Science and Technology, Sultan Moulay Slimane University, Beni Mellal, Morocco
| | - Fatiha Chigr
- Biological Engineering Laboratory, Faculty of Science and Technology, Sultan Moulay Slimane University, Beni Mellal, Morocco.
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Wu Y, Song J, Zhang Q, Yan S, Sun X, Yi W, Pan R, Cheng J, Xu Z, Su H. Association between organophosphorus pesticide exposure and depression risk in adults: A cross-sectional study with NHANES data. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120445. [PMID: 36265728 DOI: 10.1016/j.envpol.2022.120445] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Organophosphorus pesticides (OPPs) are widely used pesticides, and previous studies showed that OPPs can increase the risk of central nervous system disorders (e.g., Parkinson's and Alzheimer's disease). However, few studies have comprehensively explored their association with depression in general adults. We analyzed data from 5206 participants aged 20 years or more based on four National Health and Nutrition Examination Survey (NHANES) cycles. OPPs exposure was estimated using measures of urinary concentrations for six OPPs metabolites. Survey-weighted generalized linear regression model (SWGLM) was used to explore the association of OPPs metabolites with depression. Subgroup analyses were performed by age (≦60 years and >60 years) and gender. The weighted quantile sum (WQS) regression model was used to explore the overall association of six OPPs metabolites with depression. In addition, The Bayesian kernel machine regression (BKMR) model was applied to investigate the interaction and joint effects of multiple OPPs metabolites with depression. The SWGLM showed that dimethyl phosphate (DMP) and dimethyl thiophosphate (DMTP), whether taken as continuous or quartile variables, had a positive correlation with depression. Diethyl phosphate (DEP) and dimethyl dithiophosphate (DMDTP) in the highest quartile were positively associated with depression compared to the lowest quartile. In subgroup analysis, we found that the effects of the above chemicals on depression existed in the male and young middle-aged population, while DMP was present in the female. There was a significant combined overall effect of six OPPs metabolites with depression [OR = 1.232, 95%CI: (1.011, 1.504)] in WQS. Furthermore, the BKMR model also showed a positive trend in the overall effect of six OPPs metabolites with depression. In conclusion, our results suggest that exposure to OPPs may increase the risk of depression in US adults. Men and young and middle-aged populations are more vulnerable to OPPs and the mixture of OPPs metabolites may induce depression.
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Affiliation(s)
- Yudong Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, 230032, China
| | - Jian Song
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, 230032, China
| | - Qin Zhang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, 230032, China
| | - Shuangshuang Yan
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, 230032, China
| | - Xiaoni Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, 230032, China
| | - Weizhuo Yi
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, 230032, China
| | - Rubing Pan
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, 230032, China
| | - Jian Cheng
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, 230032, China
| | - Zhiwei Xu
- School of Public Health, Faculty of Medicine, University of Queensland, 288 Herston Road, Herston, QLD, 4006, Australia
| | - Hong Su
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, 230032, China; Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, 230032, China.
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Savall ASP, Fidélis EM, Gutierrez MEZ, Martins BB, Gervini VC, Puntel RL, Roos DH, Ávila DS, Pinton S. Pre‐clinical evidence of safety and protective effect of isatin and oxime derivatives against malathion‐induced toxicity. Basic Clin Pharmacol Toxicol 2019; 126:399-410. [DOI: 10.1111/bcpt.13359] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 10/28/2019] [Indexed: 12/22/2022]
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da Luz Abreu E, Savall ASP, Boneberg AA, Martins BB, Gervini VC, Sampaio TB, Fajardo AR, Paroul N, Roos DH, Pinton S. (3Z)-5-Chloro-3-(Hydroxyimino)indolin-2-one attenuates hyperglycemia, increased hepatic glycogen content and hepatic damage induced by malathion acute exposure in rats. Nutr Metab (Lond) 2019; 16:61. [PMID: 31516541 PMCID: PMC6727524 DOI: 10.1186/s12986-019-0374-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 06/28/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Organophosphorus pesticides (OP's) are heavily constituted in agriculture, gardens, home and veterinary and although it is useful, there are concerns about the environment, safety and health of human and animals. In this study, we investigated the effects of a new oxime, (3Z)-5-Chloro-3-(Hydroxyimino)indolin-2-one (OXIME) against the alterations induced by malathion, an OP insecticide, acute exposure on markers of hepatic damage, glucose homeostasis, oxidative stress in rats cholinesterase (ChE) activity in rats. METHODS Adult male Wistar rats were divided into four groups: Control; Malathion; OXIME; and Malathion+OXIME. Twelve hours after co-treatment with malathion (250 mg/kg, i.p.) and/or OXIME (50 mg/kg, i.g.), the plasma and liver samples were collected for biochemical analyses. RESULTS The OXIME blocked the increase of plasma markers of hepatic function (AST and ALP) and the enzymatic inhibition of catalase and glutathione reductase in the liver of malathion-treated rats. Moreover, the hepatic cholinesterases inhibition induced by malathion acute exposure was suppressed by OXIME treatment. As assessed, a single dose of OXIME lowered the glycemia levels and hepatic glycogen content enhanced by malathion. CONCLUSIONS This study suggests promise effects of (3Z)-5-Chloro-3-(Hydroxyimino) indolin-2-one against the hyperglycemia and the hepatic damage induced by malathion acute exposure, as well as its use as a ChE activity reactivator.
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Affiliation(s)
- Edina da Luz Abreu
- Universidade Federal do Pampa (UNIPAMPA) Campus Uruguaiana, Uruguaiana, RS CEP 97500-970 Brazil
| | - Anne Suély Pinto Savall
- Universidade Federal do Pampa (UNIPAMPA) Campus Uruguaiana, Uruguaiana, RS CEP 97500-970 Brazil
| | - Allyson Ardais Boneberg
- Universidade Federal do Pampa (UNIPAMPA) Campus Uruguaiana, Uruguaiana, RS CEP 97500-970 Brazil
| | - Bianca Barreto Martins
- Universidade Federal do Rio Grande - Campus Carreiros, Rio Grande, RS CEP 96201-900 Brazil
| | | | - Tuane Bazanella Sampaio
- Instituto Federal de Educação, Ciência e Tecnologia Farroupilha – Campus Santo Ângelo, Santo Ângelo, RS CEP 98806-700 Brazil
| | - André Ricardo Fajardo
- Universidade Federal de Pelotas (UFPel) - Campus Capão do Leão s/n, Pelotas, RS CEP 96010-900 Brazil
| | - Natália Paroul
- Universidade Regional Integrada (URI), Campus Erechim, Erechim, RS CEP 99709-910 Brazil
| | - Daniel Henrique Roos
- Universidade Federal do Pampa (UNIPAMPA) Campus Uruguaiana, Uruguaiana, RS CEP 97500-970 Brazil
| | - Simone Pinton
- Universidade Federal do Pampa (UNIPAMPA) Campus Uruguaiana, Uruguaiana, RS CEP 97500-970 Brazil
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Ruszkiewicz JA, Miranda-Vizuete A, Tinkov AA, Skalnaya MG, Skalny AV, Tsatsakis A, Aschner M. Sex-Specific Differences in Redox Homeostasis in Brain Norm and Disease. J Mol Neurosci 2019; 67:312-342. [DOI: 10.1007/s12031-018-1241-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 12/10/2018] [Indexed: 12/12/2022]
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Correia KM, Smee DL. Organophosphate Pesticides Alter Blue Crab (Callinectes sapidus) Behavior in Single and Consecutive Exposures. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2018; 75:134-144. [PMID: 29779178 DOI: 10.1007/s00244-018-0536-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 05/07/2018] [Indexed: 06/08/2023]
Abstract
Insecticide effects on nontarget organisms most commonly involve measuring mortality after single exposures. We examined sublethal effects of consecutive exposures of malathion, an organophosphate insecticide used for mosquito abatement, on the behavior of blue crabs (Callinectes sapidus). We measured righting time (i.e., time to return upright when placed upside down), eyestalk reflexes, foraging ability, and response to predation risk in three malathion treatments of 50 µg/L that varied in duration: (1) static exposure for 96 h followed by a second exposure for 96 h, (2) static exposure for 96 h followed by transfer to pesticide-free water for 96 h, (3) control without malathion for 192 h. Malathion significantly increased crabs' righting time 45 ± 23%, but righting time was not different from controls after crabs were placed in malathion-free water for 96 h. Normal eyestalk reflexes significantly declined 50 ± 15% in adults and 75 ± 40% in juveniles. Malathion affected foraging ability; blue crabs sought food more frequently, even in the presence of alarm cues from injured crabs but were less able to locate food after malathion exposure. Thus malathion, at environmentally occurring concentrations, interfered with blue crabs' neuromuscular function, inhibited their ability to forage, and caused them to ignore predation risk when foraging. However, two exposures to malathion did not increase mortality nor further impair behavior, and behavior was not different than controls crabs when placed in seawater without insecticides for 96 h, suggesting sublethal impairment from malathion was reversible.
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Affiliation(s)
- Kelly M Correia
- Dauphin Island Sea Lab, 101 Bienville Blvd, Dauphin Island, AL, 36528, USA.
| | - Delbert L Smee
- Dauphin Island Sea Lab, 101 Bienville Blvd, Dauphin Island, AL, 36528, USA
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Torres-Rojas C, Jones BC. Sex Differences in Neurotoxicogenetics. Front Genet 2018; 9:196. [PMID: 29922331 PMCID: PMC5996082 DOI: 10.3389/fgene.2018.00196] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 05/15/2018] [Indexed: 12/02/2022] Open
Abstract
A major development in biomedical research is the recognition that the sex of an individual plays a key role in susceptibility, treatment, and outcomes of most diseases. In this contribution, we present evidence that sex is also important in the toxicity of many environmental toxicants and contributes to the effect of genetics. Thus, individual differences in response to toxicants includes genetic makeup, the environment and sex; in fact, sex differences may be considered a part of genetic constitution. In this review, we present evidence for sex contribution to susceptibility for a number of toxicants.
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Affiliation(s)
- Carolina Torres-Rojas
- Department of Pharmacology, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Byron C Jones
- Department of Pharmacology, University of Tennessee Health Science Center, Memphis, TN, United States.,Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, TN, United States
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Comfort N, Re DB. Sex-Specific Neurotoxic Effects of Organophosphate Pesticides Across the Life Course. Curr Environ Health Rep 2018; 4:392-404. [PMID: 29063415 DOI: 10.1007/s40572-017-0171-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
PURPOSE OF REVIEW This review discusses the sex-specific effects of exposure to various organophosphate (OP) pesticides throughout the life course and potential reasons for the differential vulnerabilities observed across sexes. RECENT FINDINGS Sex is a crucial factor in the response to toxicants, yet the sex-specific effects of OP exposure, particularly in juveniles and adults, remain unresolved. This is largely due to study design and inconsistencies in exposure and outcome assessments. Exposure to OPs results in multiple adverse outcomes influenced by many factors including sex. Reported sex-specific effects suggest that males are more susceptible to OPs, which reflects the sex-dependent prevalence of various neurodevelopmental and neurodegenerative disorders such as autism and amyotrophic lateral sclerosis (ALS), in which males are at greater risk. Thus, this review proposes that the biological sex-specific effects elicited by OP exposure may in part underlie the dimorphic susceptibilities observed in neurological disorders. Understanding the immediate and long-term effects of OP exposure across sexes will be critical in advancing our understanding of OP-induced neurotoxicity and disease.
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Affiliation(s)
- Nicole Comfort
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, 10032, USA. .,NIEHS Center for Environmental Health Sciences in Northern Manhattan, Columbia University, New York, NY, 10032, USA. .,, 722 W 168th Street, 11th floor, New York, NY, 10032, USA.
| | - Diane B Re
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, 10032, USA. .,NIEHS Center for Environmental Health Sciences in Northern Manhattan, Columbia University, New York, NY, 10032, USA. .,Center for Motor Neuron Biology and Disease, Columbia University, New York, NY, 10032, USA. .,, 722 W 168th Street Suite 1107B, New York, NY, 10032, USA.
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Flora SJS. Arsenic and dichlorvos: Possible interaction between two environmental contaminants. J Trace Elem Med Biol 2016; 35:43-60. [PMID: 27049126 DOI: 10.1016/j.jtemb.2016.01.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 01/04/2016] [Accepted: 01/26/2016] [Indexed: 02/01/2023]
Abstract
Metals are ubiquitously present in the environment and pesticides are widely used throughout the world. Environmental and occupational exposure to metal along with pesticide is an area of great concern to both the public and regulatory authorities. Our major concern is that combination of these toxicant present in environment may elicit toxicity either due to additive or synergistic interactions or 'joint toxic actions' among these toxicants. It poses a rising threat to human health. Water contamination particularly ground water contamination with arsenic is a serious problem in today's scenario since arsenic is associated with several kinds of health problems, such arsenic associated health anomalies are commonly called as 'Arsenism'. Uncontrolled use and spillage of pesticides into the environment has resulted in alarming situation. Moreover serious concerns are being addressed due to their persistence in the environmental matrices such as air, soil and surface water runoff resulting in continuous exposure of these harmful chemicals to human beings and animals. Bio-availability of these environmental toxicants has been enhanced much due to anthropological activities. Dreadfully very few studies are available on combined exposures to these toxicants on the animal or human system. Studies on the acute and chronic exposure to arsenic and DDVP are well reported and well defined. Arsenic is a common global ground water contaminant while dichlorvos is one of the most commonly and widely employed organophosphate based insecticide used in agriculture, horticulture etc. There is thus a real situation where a human may get exposed to these toxicants while working in a field. This review highlights the individual and combined exposure to arsenic and dichlorvos on health.
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Affiliation(s)
- Swaran J S Flora
- Division of Regulatory Toxicology, Defence Research and Development Establishment, Jhansi Road, Gwalior 474002, India.
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El-Ebiary AA, Elsharkawy RE, Soliman NA, Soliman MA, Hashem AA. N-acetylcysteine in Acute Organophosphorus Pesticide Poisoning: A Randomized, Clinical Trial. Basic Clin Pharmacol Toxicol 2016; 119:222-7. [DOI: 10.1111/bcpt.12554] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 01/05/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Ahmad A. El-Ebiary
- Department of Forensic Medicine and Clinical Toxicology; Faculty of Medicine; Tanta University; Tanta Egypt
| | - Rasha E. Elsharkawy
- Department of Forensic Medicine and Clinical Toxicology; Faculty of Medicine; Tanta University; Tanta Egypt
| | - Nema A. Soliman
- Department of Medical Biochemistry; Faculty of Medicine; Tanta University; Tanta Egypt
| | | | - Ahmed A. Hashem
- Department of Forensic Medicine and Clinical Toxicology; Faculty of Medicine; Tanta University; Tanta Egypt
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12
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Trevisan R, Delapedra G, Mello DF, Arl M, Schmidt ÉC, Meder F, Monopoli M, Cargnin-Ferreira E, Bouzon ZL, Fisher AS, Sheehan D, Dafre AL. Gills are an initial target of zinc oxide nanoparticles in oysters Crassostrea gigas, leading to mitochondrial disruption and oxidative stress. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 153:27-38. [PMID: 24745718 DOI: 10.1016/j.aquatox.2014.03.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 03/19/2014] [Accepted: 03/20/2014] [Indexed: 06/03/2023]
Abstract
The increasing industrial use of nanomaterials during the last decades poses a potential threat to the environment and in particular to organisms living in the aquatic environment. In the present study, the toxicity of zinc oxide nanoparticles (ZnONP) was investigated in Pacific oysters Crassostrea gigas. The nanoscale of ZnONP, in vehicle or ultrapure water, was confirmed, presenting an average size ranging from 28 to 88 nm. In seawater, aggregation was detected by TEM and DLS analysis, with an increased average size ranging from 1 to 2 μm. Soluble or nanoparticulated zinc presented similar toxicity, displaying a LC50 (96 h) around 30 mg/L. High zinc dissociation from ZnONP, releasing ionic zinc in seawater, is a potential route for zinc assimilation and ZnONP toxicity. To investigate mechanisms of toxicity, oysters were treated with 4 mg/L ZnONP for 6, 24 or 48 h. ZnONP accumulated in gills (24 and 48 h) and digestive glands (48 h). Ultrastructural analysis of gills revealed electron-dense vesicles near the cell membrane and loss of mitochondrial cristae (6 h). Swollen mitochondria and a more conspicuous loss of mitochondrial cristae were observed after 24 h. Mitochondria with disrupted membranes and an increased number of cytosolic vesicles displaying electron-dense material were observed 48 h post exposure. Digestive gland showed similar changes, but these were delayed relative to gills. ZnONP exposure did not greatly affect thiol homeostasis (reduced and oxidized glutathione) or immunological parameters (phagocytosis, hemocyte viability and activation and total hemocyte count). At 24 h post exposure, decreased (-29%) glutathione reductase (GR) activity was observed in gills, but other biochemical responses were observed only after 48 h of exposure: lower GR activity (-28%) and levels of protein thiols (-21%), increased index of lipid peroxidation (+49%) and GPx activity (+26%). In accordance with ultrastructural changes and zinc load, digestive gland showed delayed biochemical responses. Except for a decreased GR activity (-47%) at 48 h post exposure, the biochemical alterations seen in gills were not present in digestive gland. The results indicate that gills are able to incorporate zinc prior (24 h) to digestive gland (48 h), leading to earlier mitochondrial disruption and oxidative stress. Our data suggest that gills are the initial target of ZnONP and that mitochondria are organelles particularly susceptible to ZnONP in C. gigas.
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Affiliation(s)
- Rafael Trevisan
- Department of Biochemistry, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Gabriel Delapedra
- Department of Biochemistry, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Danielle F Mello
- Department of Biochemistry, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Miriam Arl
- Department of Biochemistry, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Éder C Schmidt
- Department of Cell Biology, Embryology and Genetic, Federal University of Santa Catarina, 88049-900 Florianópolis, SC, Brazil
| | - Fabian Meder
- Centre for Bionano Interactions, University College Dublin, Dublin, Ireland
| | - Marco Monopoli
- Centre for Bionano Interactions, University College Dublin, Dublin, Ireland
| | - Eduardo Cargnin-Ferreira
- Federal Institute of Santa Catarina, Campus Garopaba, Laboratory of Histological Markers, 88495-000 Garopaba, SC, Brazil
| | - Zenilda L Bouzon
- Department of Cell Biology, Embryology and Genetic, Federal University of Santa Catarina, 88049-900 Florianópolis, SC, Brazil
| | - Andrew S Fisher
- School of Geography, Earth and Environmental Sciences, University of Plymouth, PL4 8AA Plymouth, United Kingdom
| | - David Sheehan
- Department of Biochemistry, University College Cork, Cork, Ireland
| | - Alcir L Dafre
- Department of Biochemistry, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
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