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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] [MESH Headings] [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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Chirinos-Peinado D, Castro-Bedriñana J, Ríos-Ríos E, Castro-Chirinos G, Quispe-Poma Y. Lead, Cadmium, and Arsenic in Raw Milk Produced in the Vicinity of a Mini Mineral Concentrator in the Central Andes and Health Risk. Biol Trace Elem Res 2024; 202:2376-2390. [PMID: 37713056 PMCID: PMC10954997 DOI: 10.1007/s12011-023-03838-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 08/30/2023] [Indexed: 09/16/2023]
Abstract
The bovine milk quality, safety, and security are of great concern mainly due to the dispersion of toxic substances from various anthropogenic activities and poor practices for organophosphates in agriculture use. This study evaluated the potential risk to human health from lead (Pb), cadmium (Cd), and arsenic (As) from the consumption of milk produced in an area of the Central Andes valley near a mini mineral concentrator by estimating the weekly intake (WI), dietary risk quotient (DRC), hazard quotient (THQ), and hazard index (HI) for the Peruvian population aged 2 to 85 years, in three scenarios of milk consumption by age (minimum, average, and maximum). Toxic element quantification was performed by flame atomic absorption spectrometry following standardized procedures. The mean amount ± standard deviation of Pb, Cd, and As in soils was 292±60.90, 3.54±1.58, and 5.60±2.20 mg/kg, the order of importance being Pb>As>Cd. The contents of Pb, Cd, and As in pastures were 23.17±10.02, 0.25±0.57, and 0.06±0.09 mg/kg, being from highest to lowest Pb>Cd>As. The means of Pb, Cd, and As content in 19 milk samples were 0.029±0.022, 0.007±0.006, and 0.010±0.004 mg/kg. Pb and Cd exceeded the maximum permissible limits (MPL), and the As was below the MPL. At all ages and milk consumption levels, the WI for Pb and Cd were below the estimated tolerable intake (TWI). The WI for As in < 19 years was higher than the TWI. The DRC for Pb and Cd at all three milk intake levels and all ages was < 1, and for As, it was > 1 in < 19 years, being the risk group. The TQH and HI for Pb and Cd were also > 1, signifying no health risk, and for As, the values were > 1 in < 11 years. Our results are valuable for preventing adverse health impacts from safe and innocuous milk consumption.
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Affiliation(s)
- Doris Chirinos-Peinado
- Research Center in Food and Nutritional Security, Universidad Nacional del Centro del Perú, Huancayo, Junín, Perú
| | - Jorge Castro-Bedriñana
- Research Center in Food and Nutritional Security, Universidad Nacional del Centro del Perú, Huancayo, Junín, Perú.
| | - Elva Ríos-Ríos
- Department of Chemistry, Science Faculty, Universidad Nacional Agraria La Molina, Lima, Perú
| | | | - Yubaly Quispe-Poma
- Zootechnical Faculty, Universidad Nacional del Centro del Perú, Huancayo, Junín, Perú
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Vimalanathane M, Abhilasha P, Prasad A, Ramachandran AS, Subramanian K. Suicidal Behavior and Its Association With Psychological Distress, Coping Mechanisms, and Resilience: A Cross-Sectional Study. Cureus 2024; 16:e60322. [PMID: 38883099 PMCID: PMC11177240 DOI: 10.7759/cureus.60322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2024] [Indexed: 06/18/2024] Open
Abstract
Introduction Recent literature reveals that psychological factors such as resilience and coping mechanisms can act as buffers against suicide risk. Indian literature on the interplay between psychological risk and protective factors of suicidal behavior is scarce. Methods A cross-sectional descriptive study was done among suicide attempters in a tertiary care hospital in Southern India. A semi-structured proforma was used to obtain sociodemographic data and suicide attempt characteristics. Suicide intent, lethality, stressful life events, perceived stress, subjective distress, coping strategies, and resilience were recorded using standard rating scales. Inferential analyses were carried out with p≤ 0.05 set as statistical significance. Results Pesticide poisoning (46.7%) was the most common mode of suicide attempt. Significant gender differences emerged in the mode of suicide attempt, coping strategies, and resilience. Depression (48.7%) was the most common psychiatric comorbidity. Increased perceived stress was associated with the presence of psychiatric comorbidity, past history of suicide attempts, and high-intent suicide attempts. Maladaptive coping strategies were associated with substance abuse and a history of past suicide attempts. Low resilience levels were associated with hanging attempts, psychiatric or substance use disorder comorbidity, past history of suicide attempts, high-intent suicide attempts, and less lethal suicide attempts. Conclusion Perceived stress levels, coping strategies, and resilience have significant relationships with suicidal behavior and act as avenues for suicide prevention efforts.
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Affiliation(s)
- Mayura Vimalanathane
- Department of Psychiatry, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth (Deemed-to-be University), Puducherry, IND
| | | | - Amritha Prasad
- Department of Psychiatry, Sree Gokulam Medical College Hospital and Research Foundation, Trivandrum, IND
| | - Arul Saravanan Ramachandran
- Department of Psychiatry, SRM (Sri Ramaswamy Memorial) Medical College Hospital & Research Institute, SRM (Sri Ramaswamy Memorial) Institute of Science and Technology, Chennai, IND
| | - Karthick Subramanian
- Department of Psychiatry, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth (Deemed-to-be University), Puducherry, IND
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Chirinos-Peinado D, Castro-Bedriñana J, Barnes EPG, Ríos-Ríos E, García-Olarte E, Castro-Chirinos G. Assessing the Health Risk and Trophic Transfer of Lead and Cadmium in Dairy Farming Systems in the Mantaro Catchment, Central Andes of Peru. TOXICS 2024; 12:308. [PMID: 38787087 PMCID: PMC11125971 DOI: 10.3390/toxics12050308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 04/06/2024] [Accepted: 04/09/2024] [Indexed: 05/25/2024]
Abstract
This study investigated lead (Pb) and cadmium (Cd) transfer in three dairy farming areas in the Mantaro river headwaters in the central Peruvian Andes and at varying distances from the mining complex at La Oroya. At each of these sites, the transfer of trace metals from the soil to raw milk was estimated, and a hazard assessment for lead and cadmium was carried out in scenarios of minimum, average, and maximum milk consumption in a Peruvian population aged 2-85. Pb and Cd were quantified by flame atomic absorption spectrometry. Significantly, the concentrations of lead and cadmium were found to exceed the maximum limits recommended by the World Health Organization, with a positive geospatial trend correlated with the distance from mining activity. Both Pb and Cd were found to be transferred through the soil-pasture-milk pathway, with the primary source of Cd being phosphate-based fertilizers used in pasture improvement. Pb was found to be the most significant contributor to the Hazard Index (HI) with those under 19 years of age and over 60 recording an HI of >1, with infants being the most vulnerable group due to their greater milk consumption in relation to their body weight. A marginal increase in contamination was observed in the dry season, indicating the need for studies to be expanded over several annual cycles.
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Affiliation(s)
- Doris Chirinos-Peinado
- Nutritional Food Safety Research Center, Universidad Nacional del Centro del Perú, Huancayo 12007, Peru; (D.C.-P.); (E.G.-O.)
| | - Jorge Castro-Bedriñana
- Nutritional Food Safety Research Center, Universidad Nacional del Centro del Perú, Huancayo 12007, Peru; (D.C.-P.); (E.G.-O.)
| | - Eustace P. G. Barnes
- Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, UK;
| | - Elva Ríos-Ríos
- Science Faculty, Universidad Nacional Agraria La Molina, Lima 15024, Peru;
| | - Edgar García-Olarte
- Nutritional Food Safety Research Center, Universidad Nacional del Centro del Perú, Huancayo 12007, Peru; (D.C.-P.); (E.G.-O.)
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Castro-Bedriñana J, Chirinos-Peinado D, Ríos-Ríos E, Castro-Chirinos G, Chagua-Rodríguez P, De La Cruz-Calderón G. Lead, Cadmium, and Arsenic in Raw Cow's Milk in a Central Andean Area and Risks for the Peruvian Populations. TOXICS 2023; 11:809. [PMID: 37888660 PMCID: PMC10611204 DOI: 10.3390/toxics11100809] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/13/2023] [Accepted: 09/19/2023] [Indexed: 10/28/2023]
Abstract
Milk and its derivatives are basic foods in Peru, especially for children. The Junín region, in the central Andes, is one of the leading dairy basins. However, the safety of milk is affected by mining-metallurgical activities, wastewater dumping, organic residues, and inappropriate use of organophosphate fertilizers in agriculture whose contaminants reach the food chain, putting human health at risk. The purpose of this study was to evaluate the bioaccumulation of lead (Pb), cadmium (Cd), and arsenic (As) in milk produced on a representative farm in central Peru, which uses phosphorous agrochemicals and is adjacent to a small mineral concentrator and a municipal solid waste dump, and to evaluate the potential risk for the Peruvian population of 2-85 years considering three levels of daily intake by age, which constitutes the innovative contribution of the study. These three elements were quantified by flame atomic absorption spectrometry following standardized procedures. The mean contents of Pb (0.062 mg/kg), Cd (0.014 mg/kg), and As (0.030 mg/kg) in milk exceeded the maximum limits allowed by international standards. At all ages, the target quotient hazard followed a descending order of As > Pb > Cd, being > 1 in the case of As. The hazard index was >1 for children under 7, 9, and 11 years of age in the scenarios of low, medium, and high milk intake. The information is valid for formulating policies to prevent adverse health effects and develop standards and awareness programs, monitoring, and control of heavy metals in milk in Peru.
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Affiliation(s)
- Jorge Castro-Bedriñana
- Research Center in Food and Nutritional Security, Universidad Nacional del Centro del Perú, Huancayo 12001, Peru;
| | - Doris Chirinos-Peinado
- Research Center in Food and Nutritional Security, Universidad Nacional del Centro del Perú, Huancayo 12001, Peru;
| | - Elva Ríos-Ríos
- Department of Chemistry, Science Faculty, Universidad Nacional Agraria La Molina, Lima 14024, Peru;
| | | | - Perfecto Chagua-Rodríguez
- Faculty of Agroindustrial Engineering, Universidad Nacional Autónoma Altoandina de Tarma, Tarma 12701, Peru;
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Sarailoo M, Afshari S, Asghariazar V, Safarzadeh E, Dadkhah M. Cognitive Impairment and Neurodegenerative Diseases Development Associated with Organophosphate Pesticides Exposure: a Review Study. Neurotox Res 2022; 40:1624-1643. [PMID: 36066747 DOI: 10.1007/s12640-022-00552-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/22/2022] [Accepted: 07/27/2022] [Indexed: 10/14/2022]
Abstract
A significant body of literature emphasizes the role of insecticide, particularly organophosphates (OPs), as the major environmental factor in the etiology of neurodegenerative diseases. This review aims to study the relationship between OP insecticide exposure, cognitive impairment, and neurodegenerative disease development. Human populations, especially in developing countries, are frequently exposed to OPs due to their extensive applications. The involvement of various signaling pathways in OP neurotoxicity are reported, but the OP-induced cognitive impairment and link between OP exposure and the pathophysiology of neurodegenerative diseases are not clearly understood. In the present review, we have therefore aimed to come to new conclusions which may help to find protective and preventive strategies against OP neurotoxicity and may establish a possible link between organophosphate exposure, cognitive impairment, and OP-induced neurotoxicity. Moreover, we discuss the findings obtained from animal and human research providing some support for OP-induced cognitive impairment and neurodegenerative disorders.
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Affiliation(s)
- Mehdi Sarailoo
- Students Research Committee, School of Public Health, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Salva Afshari
- Students Research Committee, Pharmacy School, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Vahid Asghariazar
- Deputy of Research & Technology, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Elham Safarzadeh
- Department of Microbiology, Parasitology, and Immunology, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Masoomeh Dadkhah
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran.
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Iannucci J, Nizamutdinov D, Shapiro LA. Neurogenesis and chronic neurobehavioral outcomes are partially improved by vagus nerve stimulation in a mouse model of Gulf War Illness. Neurotoxicology 2022; 90:205-215. [DOI: 10.1016/j.neuro.2022.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/05/2022] [Accepted: 04/07/2022] [Indexed: 12/22/2022]
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Mineur YS, Mose TN, Vanopdenbosch L, Etherington IM, Ogbejesi C, Islam A, Pineda CM, Crouse RB, Zhou W, Thompson DC, Bentham MP, Picciotto MR. Hippocampal acetylcholine modulates stress-related behaviors independent of specific cholinergic inputs. Mol Psychiatry 2022; 27:1829-1838. [PMID: 34997190 PMCID: PMC9106825 DOI: 10.1038/s41380-021-01404-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/15/2021] [Accepted: 11/24/2021] [Indexed: 11/08/2022]
Abstract
Acetylcholine (ACh) levels are elevated in actively depressed subjects. Conversely, antagonism of either nicotinic or muscarinic ACh receptors can have antidepressant effects in humans and decrease stress-relevant behaviors in rodents. Consistent with a role for ACh in mediating maladaptive responses to stress, brain ACh levels increase in response to stressful challenges, whereas systemically blocking acetylcholinesterase (AChE, the primary ACh degradative enzyme) elicits depression-like symptoms in human subjects, and selectively blocking AChE in the hippocampus increases relevant behaviors in rodents. We used an ACh sensor to characterize stress-evoked ACh release, then used chemogenetic, optogenetic and pharmacological approaches to determine whether cholinergic inputs from the medial septum/diagonal bands of Broca (MSDBB) or ChAT-positive neurons intrinsic to the hippocampus mediate stress-relevant behaviors in mice. Chemogenetic inhibition or activation of MSDBB cholinergic neurons did not result in significant behavioral effects, while inhibition attenuated the behavioral effects of physostigmine. In contrast, optogenetic stimulation of septohippocampal terminals or selective chemogenetic activation of ChAT-positive inputs to hippocampus increased stress-related behaviors. Finally, stimulation of sparse ChAT-positive hippocampal neurons increased stress-related behaviors in one ChAT-Cre line, which were attenuated by local infusion of cholinergic antagonists. These studies suggest that ACh signaling results in maladaptive behavioral responses to stress if the balance of signaling is shifted toward increased hippocampal engagement.
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Affiliation(s)
- Yann S Mineur
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - Tenna N Mose
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - Laura Vanopdenbosch
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - Ian M Etherington
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - Chika Ogbejesi
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - Ashraful Islam
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - Cristiana M Pineda
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - Richard B Crouse
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - Wenliang Zhou
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - David C Thompson
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - Matthew P Bentham
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA
| | - Marina R Picciotto
- Department of Psychiatry, Yale University School of Medicine, 34 Park Street, 3rd Floor Research, New Haven, CT, 06508, USA.
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Ozturk Kurt B, Konukoglu D, Kalayci R, Ozdemir S. Investigation of the Protective Role of Selenium in the Changes Caused by Chlorpyrifos in Trace Elements, Biochemical and Hematological Parameters in Rats. Biol Trace Elem Res 2022; 200:228-237. [PMID: 33566284 DOI: 10.1007/s12011-021-02616-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 01/27/2021] [Indexed: 01/14/2023]
Abstract
Organophosphate compounds are the most widely employed insecticides in countries with high agriculture activity. On average, organophosphates cause 3 million people to poison and 200 000 deaths per year due to food chain or occupational, accidental, or suicidal exposure. Our study aimed to research selenium's protective role against the toxic action of CPF, one of the most commonly used organophosphates, with an experimental model formed with rats. A total of 56 male SD rats were distributed into seven groups as follows: control (tap water), sham (corn oil), group I (5.4 mg/kg CPF), group II (13.5 mg/kg CPF), group III (3 mg/kg Se), group IV (5.4 mg/kg CPF+Se), and group V (13.5 mg/kg CPF+Se). Following 6 weeks of oral exposure, there were significant changes in AChE activity, biochemical and hematological parameters, and trace element levels in CPF-treated rats. In the high-dose CPF group, RBC values, Hb, and Hct decreased, and values of WBC, AST, ALT, ALP increased (p < 0.001) significantly compared to control, sham, and Se groups. While there was no significant change in zinc level, the copper and selenium levels were significantly higher in group IV than in control (p < 0.001) and sham (p < 0.05, p < 0.01, respectively) groups. Moreover, max. O.R.L. was found statistically more elevated in the high-dose CPF group compared to control, sham, and Se groups (p < 0.05, p < 0.05, and p < 0.01, respectively). All results indicated that Se is an antioxidant that reduces the toxic effects caused by CPF. Employing combinations of chlorpyrifos and selenium appeared greatly in restoring the harmful effects of CPF exposure.
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Affiliation(s)
- Bahar Ozturk Kurt
- Department of Biophysics, Cerrahpaşa Medical Faculty, Istanbul University-Cerrahpaşa, Istanbul, Turkey.
| | - Dildar Konukoglu
- Department of Biochemistry, Cerrahpaşa Medical Faculty, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Rivaze Kalayci
- Aziz Sancar Institute of Experimental Medicine, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
| | - Semra Ozdemir
- Department of Biophysics, Cerrahpaşa Medical Faculty, Istanbul University-Cerrahpaşa, Istanbul, Turkey
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Geronimo ACR, Melo ESP, Silva KRN, Pereira HS, Nascimento VA, Machate DJ, do Nascimento VA. Human Health Risk Assessment of Heavy Metals and Metalloids in Herbal Medicines Used to Treat Anxiety: Monitoring of Safety. Front Pharmacol 2021; 12:772928. [PMID: 34858191 PMCID: PMC8631468 DOI: 10.3389/fphar.2021.772928] [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: 09/14/2021] [Accepted: 10/18/2021] [Indexed: 11/25/2022] Open
Abstract
The present study estimated the human health risk assessment and daily intake of heavy metals and metalloids in herbal medicines used to treat anxiety in Brazil. Six different brands of herbal medicines were purchased in the city of Campo Grande/MS, Brazil: Pasalix®, Calman®, Serenus®, Maracugina®, Prakalmar® and Calmasyn®. In total, eight elements including As, Ba, Cd, Co, Cr, Cu, Fe, and Pb were analyzed using optical emission spectrometry with inductively coupled plasma (ICP OES). Only the concentration of As in the herbal medicine Prakalmar® is above the values established by United States Pharmacopoeia Convention (USP) and Brazilian Pharmacopoeia (BF) for permitted concentration of elemental impurities in drugs substances. The concentration of Ba, Cd, Co, Cr and Cu in all herbal medicines are lower than the values set by USP and FB. The concentration of Pb in Calman® is lower than the limits established by BF, but higher than those established by USP. Pasalix, Serenus®, Calmasyn®, Prakalmar® and Marcacugina® have a higher Pb concentration than the values allowed by USP and BF. All herbal medications have concentrations within safe ranges for human consumption, with the exception of Calmasyn®, which has Pb over the value defined by USP for oral permissible daily exposure (PDE) for elemental impurities. The values of estimated daily intake (EDI) of metal (loid)s in adults and children obtained from the consumption of the herbal medicines are below the values stipulated by the minimal risk levels (MRLs). All the hazard index (HI) values recorded in this study were below 1. However, monitoring by regulatory agency is necessary, large doses of heavy metal may cause acute or chronic toxicities.
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Affiliation(s)
- Ana C. R. Geronimo
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - Elaine S. P. Melo
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - Kassia R. N. Silva
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - Hugo S. Pereira
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - Valdir A. Nascimento
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - David J. Machate
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
- Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
| | - Valter A. do Nascimento
- Group of Spectroscopy and Bioinformatics Applied Biodiversity and Health (GEBABS), School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande/MS, Campo Grande, Brazil
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Behere PB, Nagdive AB, Behere AP, Yadav R, Fernandes R. Suicidal Ideation and Pesticide Exposure in Rural Communities of Central India. J Neurosci Rural Pract 2021; 12:623-629. [PMID: 34737494 PMCID: PMC8559082 DOI: 10.1055/s-0041-1735242] [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] [Indexed: 11/02/2022] Open
Abstract
Background This study aims to evaluate association between suicidal ideation and pesticide exposure in rural communities of Wardha district of Central rural India compared with villagers who are not exposed to it. Method It was a cross-sectional study done in rural community of Wardha district in Central India. About 100 farmers who were exposed to pesticides and 100 controls who were not exposed to pesticides were included. A Semistructured proforma to record sociodemographic variables and Indian version of the Self Reporting Questionnaire-20 was used. Results Of these 200 subjects, data were available for 85 farmers in study group and 74 in control group. In the farmers group, 31% of farmers had suicidal ideas, while 8% of controls felt like ending their life. Conclusion Measures must be taken to store pesticides at a safer place thus reducing long-term exposure. Organic farming is a better choice to avoid suicidal ideas.
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Affiliation(s)
- Prakash B. Behere
- Department of Psychiatry, Dnyandeo Yashwantrao Patil University, Kolhapur, Maharashtra, India
- Department of Psychiatry, Jawaharlal Nehru Medical College, Datta Meghe Institute of Medical Sciences (Deemed University), Sawangi, Wardha, Maharashtra, India
| | - Amit B. Nagdive
- Department of Psychiatry, Jawaharlal Nehru Medical College, Datta Meghe Institute of Medical Sciences (Deemed University), Sawangi, Wardha, Maharashtra, India
| | - Aniruddh P. Behere
- Department of Pediatrics and Human Development, Helen Devos Children's Hospital, Michigan State University College of Human Medicine Grand Rapids, Grand Rapids, Michigan, United States
- Department of Psychiatry, Datta Meghe Institute of Medical Sciences (Deemed University), Wardha, Maharashtra, India
| | - Richa Yadav
- Department of Psychiatry, Datta Meghe Institute of Medical Sciences (Deemed University), Wardha, Maharashtra, India
- Department of Psychiatry and Behavioural Sciences, OU College of Medicine, Oklahoma City, Oklahoma, United States
| | - Rouchelle Fernandes
- Department of Psychiatry, Jawaharlal Nehru Medical College, Datta Meghe Institute of Medical Sciences (Deemed University), Sawangi, Wardha, Maharashtra, India
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Ribeiro ACR, Deshpande LS. A review of pre-clinical models for Gulf War Illness. Pharmacol Ther 2021; 228:107936. [PMID: 34171340 DOI: 10.1016/j.pharmthera.2021.107936] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 02/08/2023]
Abstract
Gulf War Illness (GWI) is a chronic multisymptomatic disorder that afflicts over 1/3rd of the 1991 GW veterans. It spans multiple bodily systems and presents itself as a syndrome exhibiting diverse symptoms including fatigue, depression, mood, and memory and concentration deficits, musculoskeletal pain and gastrointestinal distress in GW veterans. The etiology of GWI is complex and many factors, including chemical, physiological, and environmental stressors present in the GW arena, have been implicated for its development. It has been over 30 years since the end of the GW but, GWI has been persistent in suffering veterans who are also dealing with paucity of effective treatments. The multifactorial aspect of GWI along with genetic heterogeneity and lack of available data surrounding war-time exposures have proved to be challenging in developing pre-clinical models of GWI. Despite this, over a dozen GWI animal models exist in the literature. In this article, following a brief discussion of GW history, GWI definitions, and probable causes for its pathogenesis, we will expand upon various experimental models used in GWI laboratory research. These animal models will be discussed in the context of their attempts at mimicking GW-related exposures with regards to the variations in chemical combinations, doses, and frequency of exposures. We will discuss their advantages and limitations in modeling GWI followed by a discussion of behavioral and molecular findings in these models. The mechanistic data obtained from these preclinical studies have offered multiple molecular pathways including chronic inflammation, mitochondrial dysfunction, oxidative stress, lipid disturbances, calcium homeostatic alterations, changes in gut microbiota, and epigenetic modifications, amongst others for explaining GWI development and its persistence. Finally, these findings have also informed us on novel druggable targets in GWI. While, it has been difficult to conceive a single pre-clinical model that could express all the GWI signs and exhibit biological complexity reflective of the clinical presentation in GWI, animal models have been critical for identifying molecular underpinnings of GWI and evaluating treatment strategies for GWI.
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Affiliation(s)
- Ana C R Ribeiro
- Departments of Neurology, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Laxmikant S Deshpande
- Departments of Neurology, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA; Departments of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, USA.
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Venkatasamy L, Nizamutdinov D, Jenkins J, Shapiro LA. Vagus Nerve Stimulation Ameliorates Cognitive Impairment and Increased Hippocampal Astrocytes in a Mouse Model of Gulf War Illness. Neurosci Insights 2021; 16:26331055211018456. [PMID: 34104886 PMCID: PMC8165814 DOI: 10.1177/26331055211018456] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/29/2021] [Indexed: 01/17/2023] Open
Abstract
Gulf war illness (GWI), is a chronic multi-symptom illness that has impacted approximately one-third of the veterans who served in the 1990 to 1991 Gulf War. GWI symptoms include cognitive impairments (eg, memory and concentration problems), headaches, migraines, fatigue, gastrointestinal and respiratory issues, as well as emotional deficits. The exposure to neurological chemicals such as the anti-nerve gas drug, pyridostigmine bromide (PB), and the insecticide permethrin (PER), may contribute to the etiologically related factors of GWI. Various studies utilizing mouse models of GWI have reported the interplay of these chemical agents in increasing neuroinflammation and cognitive dysfunction. Astrocytes are involved in the secretion of neuroinflammatory cytokines and chemokines in pathological conditions and have been implicated in GWI symptomology. We hypothesized that exposure to PB and PER causes lasting changes to hippocampal astrocytes, concurrent with chronic cognitive deficits that can be reversed by cervical vagus nerve stimulation (VNS). GWI was induced in CD1 mice by injecting the mixture of PER (200 mg/kg) and PB (2 mg/kg), i.p. for 10 consecutive days. VNS stimulators were implanted at 33 weeks after GWI induction. The results show age-related cognitive alterations at approximately 9 months after exposure to PB and PER. The results also showed an increased number of GFAP-labeled astrocytes in the hippocampus and dentate gyrus that was ameliorated by VNS.
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Affiliation(s)
- Lavanya Venkatasamy
- Department of Neuroscience and Experimental Therapeutics, Texas A&M University, Bryan, TX, USA
| | - Damir Nizamutdinov
- Department of Neuroscience and Experimental Therapeutics, Texas A&M University, Bryan, TX, USA
| | - Jaclyn Jenkins
- Department of Neuroscience and Experimental Therapeutics, Texas A&M University, Bryan, TX, USA
| | - Lee A Shapiro
- Department of Neuroscience and Experimental Therapeutics, Texas A&M University, Bryan, TX, USA
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Ribeiro-Carvalho A, Lima CS, Dutra-Tavares AC, Nunes F, Nunes-Freitas AL, Filgueiras CC, Manhães AC, Meyer A, Abreu-Villaça Y. Mood-related behavioral and neurochemical alterations in mice exposed to low chlorpyrifos levels during the brain growth spurt. PLoS One 2020; 15:e0239017. [PMID: 33007016 PMCID: PMC7531821 DOI: 10.1371/journal.pone.0239017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/27/2020] [Indexed: 12/03/2022] Open
Abstract
Organophosphates are among the most used pesticides. Particularly, chlorpyrifos (CPF) is responsible for a number of deleterious effects on brain development, which may program behavioral changes later in life. Here, we investigated whether a regimen of early low level CPF exposure that did not result in a significant inhibition of acetylcholinesterase (AChE) had deleterious effects on mood-related behaviors, as well as on cholinergic and serotonergic biomarkers in the mice brain. From the 3rd to 9th postnatal day (PN), male and female Swiss mice were subcutaneously injected with CPF. Mice were submitted to a battery of behavioral tests from PN60 to PN63: open field, elevated plus maze and forced swimming tests. The cholinergic and serotonergic biomarkers were assessed at PN10 and PN63. Our data indicated that early CPF exposure increased anxiety-like behavior in females and altered decision-making behavior in both sexes. Most biochemical alterations were sex-dependent and restricted to females. At PN10, CPF female mice showed increased serotonin and choline transporter binding in cerebral cortex. Distinctively, in adult females, the effects indicated a hypoactive state: CPF exposure reduced 5-HT1a receptor binding in cerebral cortex, as well as serotonin transporter binding and choline acetyltransferase activity in brainstem. Our results indicate that CPF exposure during the brain growth spurt deregulates serotonergic and cholinergic biomarkers. The effects are consistent with impaired synaptic function, may be related to long-term mood disorders and point out to higher female susceptibility.
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Affiliation(s)
- Anderson Ribeiro-Carvalho
- Departamento de Ciências, Faculdade de Formação de Professores da Universidade do Estado do Rio de Janeiro, São Gonçalo, RJ, Brazil
- * E-mail:
| | - Carla S. Lima
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ana C. Dutra-Tavares
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Fernanda Nunes
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - André L. Nunes-Freitas
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Cláudio C. Filgueiras
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Alex C. Manhães
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Armando Meyer
- Instituto de Estudos em Saúde Coletiva e Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Yael Abreu-Villaça
- Laboratório de Neurofisiologia, Departamento de Ciências Fisiológicas, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Dickerson AS, Wu AC, Liew Z, Weisskopf M. A Scoping Review of Non-Occupational Exposures to Environmental Pollutants and Adult Depression, Anxiety, and Suicide. Curr Environ Health Rep 2020; 7:256-271. [PMID: 32533365 PMCID: PMC7483936 DOI: 10.1007/s40572-020-00280-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
PURPOSE OF REVIEW Despite a call for better understanding of the role of environmental pollutant influences on mental health and the tremendous public health burden of mental health, this issue receives far less attention than many other effects of pollutants. Here we summarize the body of literature on non-occupational environmental pollutant exposures and adult depression, anxiety, and suicide-in PubMed, Embase, Web of Science, and PsychINFO through the end of year 2018. RECENT FINDINGS One hundred twelve articles met our criteria for further review. Of these, we found 88 articles on depression, 33 on anxiety, and 22 on suicide (31 articles covered multiple outcomes). The earliest article was published in 1976, and the most frequent exposure of interest was air pollution (n = 33), followed by secondhand smoke (n = 20), metals (n = 18), noise (n = 17), and pesticides (n = 10). Other exposures studied less frequently included radiation, magnetic fields, persistent organic pollutants (POPs), volatile organic compounds, solvents, and reactive sulfur compounds. The current literature, although limited, clearly suggests many kinds of environmental exposures may be risk factors for depression, anxiety, and suicide. For several pollutants, important limitations exist with many of the studies. Gaps in the body of research include a need for more longitudinal, life-course studies, studies that can measure cumulative exposures as well as shorter-term exposures, studies that reduce the possibility of reverse causation, and mechanistic studies focused on neurotoxic exposures.
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Affiliation(s)
- Aisha S Dickerson
- Departments of Epidemiology and Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Alexander C Wu
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Zeyan Liew
- Department of Environmental Health Sciences, Center for Perinatal Pediatric, and Environmental Epidemiology, Yale School of Public Health, New Haven, CT, 06510, USA
| | - Marc Weisskopf
- Departments of Epidemiology and Environmental Health, Harvard T.H. Chan School of Public Health, 665 Huntington Avenue, Building 1, Suite 1402, Boston, MA, 02115, USA.
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Cruz-Ávila HA, Vallejo M, Martínez-García M, Hernández-Lemus E. Comorbidity Networks in Cardiovascular Diseases. Front Physiol 2020; 11:1009. [PMID: 32982776 PMCID: PMC7485389 DOI: 10.3389/fphys.2020.01009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 07/24/2020] [Indexed: 12/24/2022] Open
Abstract
Background: Cardiovascular diseases are the leading causes of mortality worldwide. One reason behind this lethality lies in the fact that often cardiovascular illnesses develop into systemic failure due to the multiple connections to organismal metabolism. This in turn is associated with co-morbidities and multimorbidity. The prevalence of coexisting diseases and the relationship between the molecular origins adds to the complexity of the management of cardiovascular diseases and thus requires a profound knowledge of the genetic interaction of diseases. Objective: In order to develop a deeper understanding of this phenomenon, we examined the patterns of comorbidity as well as their genetic interaction of the diseases (or the lack of evidence of it) in a large set of cases diagnosed with cardiovascular conditions at the national reference hospital for cardiovascular diseases in Mexico. Methods: We performed a cross-sectional study of the National Institute of Cardiology. Socioeconomic information, principal diagnosis that led to the hospitalization and other conditions identified by an ICD-10 code were obtained for 34,099 discharged cases. With this information a cardiovascular comorbidity networks were built both for the full database and for ten 10-years age brackets. The associated cardiovascular comorbidities modules were found. Data mining was performed in the comprehensive ClinVar database with the disease names (as extracted from ICD-10 codes) to establish (when possible) connections between the genetic associations of the genetic interaction of diseases. The rationale is that some comorbidities may have a stronger genetic origin, whereas for others, the environment and other factors may be stronger. Results: We found that comorbidity networks are highly centralized in prevalent diseases, such as cardiac arrhythmias, heart failure, chronic kidney disease, hypertension, and ischemic diseases. Said comorbidity networks are actually modular on their connectivity. Modules recapitulate physiopathological commonalities, e.g., ischemic diseases clustering together. This is also the case of chronic systemic diseases, of congenital malformations and others. The genetic and environmental commonalities behind some of the relations in these modules were also found by resorting to clinical genetics databases and functional pathway enrichment studies. Conclusions: This methodology, hence may allow the clinician to look up for non-evident comorbidities whose knowledge will lead to improve therapeutically designs. By continued and consistent analysis of these types of patterns, we envisaged that it may be possible to acquire, strong clinical and basic insights that may further our advance toward a better understanding of cardiovascular diseases as a whole. Hopefully these may in turn lead to further development of better, integrated therapeutic strategies.
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Affiliation(s)
- Héctor A Cruz-Ávila
- Health Promotion Department, Autonomous University of Mexico City, Mexico City, Mexico.,Sociomedical Research Unit, National Institute of Cardiology "Ignacio Chávez", Mexico City, Mexico
| | - Maite Vallejo
- Sociomedical Research Unit, National Institute of Cardiology "Ignacio Chávez", Mexico City, Mexico
| | - Mireya Martínez-García
- Sociomedical Research Unit, National Institute of Cardiology "Ignacio Chávez", Mexico City, Mexico
| | - Enrique Hernández-Lemus
- Computational Genomics Division, National Institute of Genomic Medicine (INMEGEN), Mexico City, Mexico.,Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Mexico City, Mexico
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Delaney S, Hornig M. Environmental Exposures and Neuropsychiatric Disorders: What Role Does the Gut-Immune-Brain Axis Play? Curr Environ Health Rep 2019; 5:158-169. [PMID: 29423662 DOI: 10.1007/s40572-018-0186-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Evidence is growing that environmental exposures-including xenobiotics as well as microbes-play a role in the pathogenesis of many neuropsychiatric disorders. Underlying mechanisms are likely to be complex, involving the developmentally sensitive interplay of genetic/epigenetic, detoxification, and immune factors. Here, we review evidence supporting a role for environmental factors and disrupted gut-immune-brain axis function in some neuropsychiatric conditions. RECENT FINDINGS Studies suggesting the involvement of an altered microbiome in triggering CNS-directed autoimmunity and neuropsychiatric disturbances are presented as an intriguing example of the varied mechanisms by which environmentally induced gut-immune-brain axis dysfunction may contribute to adverse brain outcomes. The gut-immune-brain axis is a burgeoning frontier for investigation of neuropsychiatric illness. Future translational research to define individual responses to exogenous exposures in terms of microbiome-dependent skew of the metabolome, immunity, and brain function may serve as a lens for illumination of pathways involved in the development of CNS disease and fuel discovery of novel interventions.
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Affiliation(s)
- Shannon Delaney
- Department of Psychiatry, Columbia University Medical Center, New York, NY, 10032, USA
| | - Mady Hornig
- Center for Infection and Immunity, Columbia University Mailman School of Public Health, 722 W 168th St, Rm 1706, New York, NY, 10032, USA.
- Department of Epidemiology, Columbia University Mailman School of Public Health, 722 W 168th St, Rm 1706, New York, NY, 10032, USA.
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18
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Atropine counteracts the depressive-like behaviour elicited by acute exposure to commercial chlorpyrifos in rats. Neurotoxicol Teratol 2019; 71:6-15. [DOI: 10.1016/j.ntt.2018.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 11/07/2018] [Accepted: 11/13/2018] [Indexed: 12/30/2022]
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19
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Nizamutdinov D, Mukherjee S, Deng C, Stauss HM, Shapiro LA. Gulf War agents pyridostigmine bromide and permethrin cause hypersensitive nociception that is restored after vagus nerve stimulation. Neurotoxicology 2018; 69:93-96. [DOI: 10.1016/j.neuro.2018.09.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 09/19/2018] [Accepted: 09/24/2018] [Indexed: 01/30/2023]
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Affiliation(s)
| | - Iain P Hargreaves
- Senior Lecturer, School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University
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21
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Paul KC, Sinsheimer JS, Cockburn M, Bronstein JM, Bordelon Y, Ritz B. Organophosphate pesticides and PON1 L55M in Parkinson's disease progression. ENVIRONMENT INTERNATIONAL 2017; 107:75-81. [PMID: 28689109 PMCID: PMC5600289 DOI: 10.1016/j.envint.2017.06.018] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 06/08/2017] [Accepted: 06/22/2017] [Indexed: 05/13/2023]
Abstract
BACKGROUND Parkinson's disease (PD) has motor and non-motor features that contribute to its phenotype and functional decline. Organophosphate (OP) pesticides and PON1 L55M, which influences OP metabolism, have been implicated in multiple mechanisms related to neuronal cell death and may influence PD symptom progression. OBJECTIVE To investigate whether ambient agricultural OP exposure and PON1 L55M influence the rate of motor, cognitive, and mood-related symptom progression in PD. METHODS We followed a longitudinal cohort of 246 incident PD patients on average over 5years (7.5years after diagnosis), repeatedly measuring symptom progression with the Mini-Mental State Exam (MMSE), Unified Parkinson's Disease Rating Scale (UPDRS), and Geriatric Depressive Scale (GDS). OP exposures were generated with a geographic information system (GIS) based exposure assessment tool. We employed repeated-measures regression to assess associations between OP exposure and/or PON1 L55M genotype and progression. RESULTS High OP exposures were associated with faster progression of motor (UPDRS β=0.24, 95% CI=-0.01, 0.49) and cognitive scores (MMSE β=-0.06, 95% CI=-0.11, -0.01). PON1 55MM was associated with faster progression of motor (UPDRS β=0.28, 95% CI=0.08, 0.48) and depressive symptoms (GDS β=0.07; 95% CI=0.01, 0.13). We also found the PON1 L55M variant to interact with OP exposures in influencing MMSE cognitive scores (β=-1.26, 95% CI=-2.43, -0.09). CONCLUSION Our study provides preliminary support for the involvement of OP pesticides and PON1 in PD-related motor, cognitive, or depressive symptom progression. Future studies are needed to replicate findings and examine whether elderly populations generally are similarly impacted by pesticides or PON1 55M genotypes.
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Affiliation(s)
- Kimberly C Paul
- Department of Epidemiology, UCLA Fielding School of Public Health, Los Angeles, California, USA
| | - Janet S Sinsheimer
- Department of Biostatistics, UCLA Fielding School of Public Health, Los Angeles, California, USA; Departments of Human Genetics and Biomathematics, David Geffen School of Medicine, Los Angeles, California, USA
| | - Myles Cockburn
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, CA, USA
| | - Jeff M Bronstein
- Department of Neurology, David Geffen School of Medicine, Los Angeles, California, USA
| | - Yvette Bordelon
- Department of Neurology, David Geffen School of Medicine, Los Angeles, California, USA
| | - Beate Ritz
- Department of Epidemiology, UCLA Fielding School of Public Health, Los Angeles, California, USA; Department of Neurology, David Geffen School of Medicine, Los Angeles, California, USA.
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Saeedi Saravi SS, Amirkhanloo R, Arefidoust A, Yaftian R, Saeedi Saravi SS, Shokrzadeh M, Dehpour AR. On the effect of minocycline on the depressive-like behavior of mice repeatedly exposed to malathion: interaction between nitric oxide and cholinergic system. Metab Brain Dis 2016; 31:549-61. [PMID: 26581675 DOI: 10.1007/s11011-015-9764-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 11/09/2015] [Indexed: 01/06/2023]
Abstract
This study was performed to investigate the antidepressant-like effect of minocycline in mice exposed to organophosphate pesticide malathion and possible involvement of nitric oxide/cGMP pathway in this paradigm. Mice were administered specific doses of malathion once daily for 7 consecutive days. After induction of depression, different doses of minocycline were daily injected alone or combined with non-specific NOS inhibitor, L-NAME, specific inducible NOS inhibitor, AG, NO precursor, L-arginine, and PDE5I, sildenafil. After locomotion assessment in open-field test, immobility times were recorded in the FST and TST. Moreover, hippocampal nitrite concentrations and acetylcholinesterase activity were measured. The results showed that repeated exposure to malathion induces depressive-like behavior at dose of 250 mg/kg. Minocycline (160 mg/kg) significantly reduced immobility times in FST and TST (P < 0.001). Combination of sub-effective doses of minocycline (80 mg/kg) with either L-NAME (3 mg/kg) or AG (25 mg/kg) significantly exerted a robust antidepressant-like effect in FST and TST (P < 0.001). Furthermore, minocycline at the same dose which has antidepressant-like effect, significantly reduced hippocampal nitrite concentration. The investigation indicates the essential role for NO/cGMP pathway in malathion-induced depressive-like behavior and antidepressant-like effect of minocycline. Moreover, the interaction between nitrergic and cholinergic systems are suggested to be involved in malathion-induced depression.
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Affiliation(s)
- Seyed Soheil Saeedi Saravi
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box: 13145-784, Tehran, Iran
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology-Pharmacology, Faculty of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran
| | - Roya Amirkhanloo
- Department of Toxicology-Pharmacology, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Alireza Arefidoust
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box: 13145-784, Tehran, Iran
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Rahele Yaftian
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box: 13145-784, Tehran, Iran
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Sobhan Saeedi Saravi
- Department of Toxicology-Pharmacology, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mohammad Shokrzadeh
- Department of Toxicology-Pharmacology, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Ahmad Reza Dehpour
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, P.O. Box: 13145-784, Tehran, Iran.
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran.
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Stallones L, Beseler CL. Assessing the connection between organophosphate pesticide poisoning and mental health: A comparison of neuropsychological symptoms from clinical observations, animal models and epidemiological studies. Cortex 2016; 74:405-16. [DOI: 10.1016/j.cortex.2015.10.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 10/01/2015] [Accepted: 10/05/2015] [Indexed: 01/08/2023]
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Cotton J, Lewandowski P, Brumby S. Cholinesterase Research Outreach Project (CROP): measuring cholinesterase activity and pesticide use in an agricultural community. BMC Public Health 2015; 15:748. [PMID: 26243006 PMCID: PMC4526178 DOI: 10.1186/s12889-015-2076-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 07/21/2015] [Indexed: 12/02/2022] Open
Abstract
Background Australian farmers and their workers are exposed to a wide variety of pesticides. Organophosphate (OP) insecticides are a widely used class of pesticide used for animal husbandry practices (Naphthalophos for sheep dipping, jetting and drench), crop production for pest control (Dimethoate) and in public health (Maldison for head lice). Acute poisonings with this class of insecticide are reported among agricultural workers and children around the globe, due to the inhibition of acetylcholinesterase (AChE). Less is known about chronic exposures. Regular monitoring of erythrocyte AChE will enable farmers to identify potential exposure to organophosphate insecticides and take action to reduce exposures and improve their health and safety practices. This study aims to assess and improve the integration of AChE monitoring into routine point of care health clinics, and provide farming and non-farming people with a link between their AChE activity and their household chemical and agrichemical use. Methods/Design The research will target individuals who work on mixed farming enterprises and routinely using OPs (n = 50) and non-farmers (n = 30). Baseline data are collected regarding demographic, health conditions and behaviours, Kessler 10 (K10) scores, chemical use and personal protection. Baseline anthropometric measures include height, weight, hip and waist circumference, body fat analysis and, biochemical analysis of fasted total serum cholesterol, triglycerides, low-density cholesterol (LDL), high-density cholesterol (HDL) and blood glucose. Analysis of erythrocyte cholinesterase (EAChE) activity is also conducted using a finger prick test. Testing of EAChE is then repeated in all participants every 3 weeks for a maximum of three times over a period 10 weeks. Participants are provided with full feedback and counselling about their EAChE activity after each reading and a detailed summary provided to all participants at the completion of the study. Data will be analysed using repeated measures within a general linear model. Discussion This work will provide an evidence base and recommendations for the integration of EAChE monitoring into Australian rural health clinics, leading to research which will further quantify pesticide exposure both on the farm and in the home, highlighting the importance of sustaining and providing a safe work and home environment for farming communities. Trial registration ACTRN12613001256763
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Affiliation(s)
- Jacqueline Cotton
- National Centre for Farmer Health, Western District Health Service, PO Box 823, Hamilton, Vic, 3300, Australia. .,School of Medicine, Deakin University, 75 Pigdons Road, Waurn Ponds, Vic, 3216, Australia.
| | - Paul Lewandowski
- School of Medicine, Deakin University, 75 Pigdons Road, Waurn Ponds, Vic, 3216, Australia.
| | - Susan Brumby
- National Centre for Farmer Health, Western District Health Service, PO Box 823, Hamilton, Vic, 3300, Australia. .,School of Medicine, Deakin University, 75 Pigdons Road, Waurn Ponds, Vic, 3216, Australia.
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Slotkin TA, Skavicus S, Levin ED, Seidler FJ. Prenatal nicotine changes the response to postnatal chlorpyrifos: Interactions targeting serotonergic synaptic function and cognition. Brain Res Bull 2015; 111:84-96. [PMID: 25592617 DOI: 10.1016/j.brainresbull.2015.01.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 12/29/2014] [Accepted: 01/05/2015] [Indexed: 11/25/2022]
Abstract
Nicotine and chlorpyrifos are developmental neurotoxicants that target serotonin systems. We examined whether prenatal nicotine exposure alters the subsequent response to chlorpyrifos given postnatally. Pregnant rats received nicotine throughout gestation at 3mg/kg/day, a regimen designed to achieve plasma levels seen in smokers; chlorpyrifos was given to pups on postnatal days (PN) 1-4 at 1mg/kg, just above the detection threshold for brain cholinesterase inhibition. We assessed long-term effects from adolescence (PN30) through full adulthood (PN150), measuring the expression of serotonin receptors and serotonin turnover (index of presynaptic impulse activity) in cerebrocortical brain regions encompassing the projections that are known targets for nicotine and chlorpyrifos. Nicotine or chlorpyrifos individually increased the expression of serotonin receptors, with greater effects on males than on females and with distinct temporal and regional patterns indicative of adaptive synaptic changes rather than simply an extension of initial injury. This interpretation was confirmed by our finding an increase in serotonin turnover, connoting presynaptic serotonergic hyperactivity. Animals receiving the combined treatment showed a reduction in these adaptive effects on receptor binding and turnover relative to the individual agents, or even an effect in the opposite direction; further, normal sex differences in serotonin receptor concentrations were dissipated or reversed, an effect that was confirmed by behavioral evaluations in the Novel Objection Recognition Test. In addition to the known liabilities associated with maternal smoking during pregnancy, our results point to additional costs in the form of heightened vulnerability to neurotoxic chemicals encountered later in life.
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Affiliation(s)
- Theodore A Slotkin
- Department of Pharmacology & Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA.
| | - Samantha Skavicus
- Department of Pharmacology & Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Edward D Levin
- Department of Psychiatry & Behavioral Sciences, Duke University Medical Center, Durham, NC 27710, USA
| | - Frederic J Seidler
- Department of Pharmacology & Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA
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26
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Yu S, Cole JS. A 48-year-old man with severe shortness of breath. Air Med J 2014; 33:231-234. [PMID: 25179957 DOI: 10.1016/j.amj.2014.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 04/16/2014] [Accepted: 05/02/2014] [Indexed: 06/03/2023]
Abstract
A 48-year-old man was found by his neighbor unconscious on the floor at his residence. Earlier in the day, his neighbor reported noticing the patient was becoming more short of breath and having some trouble speaking. The neighbor alerted EMS. Upon EMS arrival, the patient was tachypneic with a room air O2 saturation in the 60s. A LifeFlight helicopter responded to transfer this patient to a tertiary care center from his home in a rural farming community.
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Affiliation(s)
- Sammy Yu
- Department of Emergency Medicine, Allegheny General Hospital, Pittsburgh, PA
| | - John S Cole
- Department of Emergency Medicine, Allegheny General Hospital, Pittsburgh, PA.
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27
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Krawczyk N, Meyer A, Fonseca M, Lima J. Suicide mortality among agricultural workers in a region with intensive tobacco farming and use of pesticides in Brazil. J Occup Environ Med 2014; 56:993-1000. [PMID: 25046321 PMCID: PMC5240450 DOI: 10.1097/jom.0000000000000214] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To investigate whether suicide risk among agricultural workers is higher in regions with heavier pesticide use and/or presence of tobacco farming. METHODS Suicide mortality data were gathered from residents of the Brazilian state of Alagoas. Agricultural census data were used to arrange and classify Alagoas cities into distribution groups on the basis of variables concerning pesticide use and/or tobacco farming. Mortality odds ratio calculations were then used to compare suicide risk among agricultural and nonagricultural workers in different groups. RESULTS Suicide risk was higher among agricultural workers than among nonagricultural workers, elevated in regions that used more pesticides, and greatest in regions that produced more tobacco. CONCLUSIONS This is one of the first studies of its kind to suggest that combined effects of pesticide and tobacco exposure may be linked to higher suicide risk among agricultural workers.
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Affiliation(s)
- Noa Krawczyk
- From the Department of Preventative Medicine (Ms Krawczyk and Ms Fonseca), Icahn School of Medicine at Mount Sinai, New York, NY; Institute for Studies in Collective Health (Dr Meyer), Universidade Federal do Rio de Janeiro; and Department of Biochemistry (Dr Lima), Universidade Federal do Estado do Rio de Janeiro, RJ, Brazil
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Pesticides, depression and suicide: A systematic review of the epidemiological evidence. Int J Hyg Environ Health 2013; 216:445-60. [DOI: 10.1016/j.ijheh.2012.12.003] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 12/13/2012] [Accepted: 12/18/2012] [Indexed: 11/22/2022]
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31
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You T, Lv J, Zhou L. PON1 Q192R and L55M Polymorphisms and Organophosphate Toxicity Risk: A Meta-Analysis. DNA Cell Biol 2013; 32:252-9. [PMID: 23590198 DOI: 10.1089/dna.2012.1961] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Tian You
- Department of Emergency Medicine, The First Hospital of China Medical University, Shenyang, Republic of China
| | - Jingyu Lv
- Department of Medical Genetics, School of Basic Medicine, China Medical University, Shenyang, Republic of China
| | - Liping Zhou
- Department of Laboratory Medicine, The First Hospital of China Medical University, Shenyang, Republic of China
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32
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Abdel Moneim WM, Yassa HA, George SM. Suicide Trends in Upper Egypt. J Forensic Sci 2012; 57:1247-51. [DOI: 10.1111/j.1556-4029.2012.02247.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 07/01/2011] [Accepted: 07/17/2011] [Indexed: 11/28/2022]
Affiliation(s)
- Wafaa M Abdel Moneim
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Assiut University, Asyut, Egypt
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33
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Jokanović M, Škrbić R. Neurotoxic disorders and medical management of patients poisoned with organophosphorus pesticides. SCRIPTA MEDICA 2012. [DOI: 10.5937/scriptamed1202091j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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34
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Lima CS, Nunes-Freitas AL, Ribeiro-Carvalho A, Filgueiras CC, Manhães AC, Meyer A, Abreu-Villaça Y. Exposure to methamidophos at adulthood adversely affects serotonergic biomarkers in the mouse brain. Neurotoxicology 2011; 32:718-24. [DOI: 10.1016/j.neuro.2011.08.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 06/02/2011] [Accepted: 08/11/2011] [Indexed: 12/29/2022]
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Parrón T, Requena M, Hernández AF, Alarcón R. Association between environmental exposure to pesticides and neurodegenerative diseases. Toxicol Appl Pharmacol 2011; 256:379-85. [PMID: 21601587 DOI: 10.1016/j.taap.2011.05.006] [Citation(s) in RCA: 162] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 05/03/2011] [Accepted: 05/04/2011] [Indexed: 12/28/2022]
Abstract
Preliminary studies have shown associations between chronic pesticide exposure in occupational settings and neurological disorders. However, data on the effects of long-term non-occupational exposures are too sparse to allow any conclusions. This study examines the influence of environmental pesticide exposure on a number of neuropsychiatric conditions and discusses their underlying pathologic mechanisms. An ecological study was conducted using averaged prevalence rates of Alzheimer's disease, Parkinson's disease, multiple sclerosis, cerebral degeneration, polyneuropathies, affective psychosis and suicide attempts in selected Andalusian health districts categorized into areas of high and low environmental pesticide exposure based on the number of hectares devoted to intensive agriculture and pesticide sales per capita. A total of 17,429 cases were collected from computerized hospital records (minimum dataset) between 1998 and 2005. Prevalence rates and the risk of having Alzheimer's disease, Parkinson's disease, multiple sclerosis and suicide were significantly higher in districts with greater pesticide use as compared to those with lower pesticide use. The multivariate analyses showed that the population living in areas with high pesticide use had an increased risk for Alzheimer's disease and suicide attempts and that males living in these areas had increased risks for polyneuropathies, affective disorders and suicide attempts. In conclusion, this study supports and extends previous findings and provides an indication that environmental exposure to pesticides may affect the human health by increasing the incidence of certain neurological disorders at the level of the general population.
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Affiliation(s)
- Tesifón Parrón
- University of Almería, Department of Neurosciences and Health Sciences, Almería, Spain
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36
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Maris AF, Franco JL, Mitozo PA, Paviani G, Borowski C, Trevisan R, Uliano-Silva M, Farina M, Dafre AL. Gender effects of acute malathion or zinc exposure on the antioxidant response of rat hippocampus and cerebral cortex. Basic Clin Pharmacol Toxicol 2011; 107:965-70. [PMID: 20629655 DOI: 10.1111/j.1742-7843.2010.00614.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Gender is one of the most important factors in mammalian development and response to exogenous agents. Although there is increasing evidence that health effects of toxic xenobiotics differ in prevalence or are manifested differently in male and female, the molecular mechanisms related to these events remain unclear. In order to investigate the possible influence of gender, male and female Wistar rats from the same litter were exposed to zinc chloride (5 mg/kg, i.p.) or malathion (250 mg/kg, i.p.) 24 hr prior to the analyses of biochemical parameters related to the cholinergic and glutathione-antioxidant systems in cerebral cortex and hippocampus. After treatments, acetylcholinesterase (AChE) activity was reduced in the hippocampus and cerebral cortex of male and female rats treated with malathion, but the effect was more pronounced in the male group. Glutathione reductase (GR) and γ-glutamyl-transpeptidase activities were reduced in the hippocampus of males and females and a gender-specific effect of malathion was seen for glutathione S-transferase (GST), which was decreased only in male hippocampus and cortex, and for male cortical GR. Zinc chloride treatment decreased AChE activity in male and female cerebral cortex, with no obvious effect in the hippocampus. Male-specific antioxidant-related enzyme activity reductions were seen after zinc treatment for cortical GR, GST, glutathione peroxidase and glucose-6-phosphate dehydrogenase; and hippocampal GR. These results clearly demonstrate a greater detrimental effect on antioxidant-related enzyme activities in male hippocampus and cerebral cortex when rats were acutely exposed to malathion and zinc, demonstrating that the research on gender-related differences in health effects caused by xenobiotic and/or essential elements requires further attention.
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Affiliation(s)
- Angelica Francesca Maris
- Molecular Biology and Bioinformatics Laboratory, Biological and Health Sciences Area, University West of Santa Catarina, Joaçaba, SC, Brazil
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Abdel Moneim WM, Yassa HA, George SM. Suicide rate: Trends and implications in Upper Egypt. EGYPTIAN JOURNAL OF FORENSIC SCIENCES 2011. [DOI: 10.1016/j.ejfs.2011.04.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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38
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Zhang J, Stewart R, Phillips M, Shi Q, Prince M. Pesticide exposure and suicidal ideation in rural communities in Zhejiang province, China. Bull World Health Organ 2011; 87:745-53. [PMID: 19876541 DOI: 10.2471/blt.08.054122] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2008] [Accepted: 01/23/2009] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE To investigate the association between pesticide exposure and suicidal ideation in rural areas of China. METHODS The analysis involved data from a survey of a representative sample of 9811 rural residents in Zhejiang province who had been asked about the storage of pesticides at home and about whether or not they had considered suicide within the 2 years before the interview. The Chinese version of the 12-item General Health Questionnaire (GHQ) was administered to screen for mental disorder. FINDINGS The unadjusted odds ratio (OR) for the association between pesticide storage at home and suicidal ideation over the prior 2 years was 2.12 (95% confidence interval, CI: 1.54-2.93). After adjusting for gender, age, education, socioeconomic status, marital status, physical health, family history of suicidal behaviour, GHQ caseness and study design effects, the OR was 1.63 (95% CI: 1.13-2.35). CONCLUSION A potential marker of chronic pesticide exposure was found to be associated with suicidal ideation, which supports findings from previous studies. Given the high level of pesticide exposure and the high suicide risk in rural China, clarification of the causal mechanisms underlying this association and the development of appropriate interventions are priorities for public health and health policy.
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Affiliation(s)
- Jianmin Zhang
- Office of Mental Health, Zhejiang Provincial Tongde Hospital, Hangzhou, China
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Slotkin TA, Lobner D, Seidler FJ. Transcriptional profiles for glutamate transporters reveal differences between organophosphates but similarities with unrelated neurotoxicants. Brain Res Bull 2010; 83:76-83. [PMID: 20600679 DOI: 10.1016/j.brainresbull.2010.06.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 06/10/2010] [Accepted: 06/19/2010] [Indexed: 01/05/2023]
Abstract
The developmental neurotoxicity of organophosphates involves mechanisms other than their shared property as cholinesterase inhibitors, among which are excitotoxicity and oxidative stress. We used PC12 cells as a neurodevelopmental model to compare the effects of chlorpyrifos and diazinon on the expression of genes encoding glutamate transporters. Chlorpyrifos had a greater effect in cells undergoing nerve growth factor-induced neurodifferentiation as compared to undifferentiated PC12 cells, with peak sensitivity at the initiation of differentiation, reflecting a global upregulation of all the glutamate transporter genes expressed in this cell line. In differentiating cells, chlorpyrifos had a significantly greater effect than did diazinon and concordance analysis indicated no resemblance in their expression patterns. At the same time, the smaller effects of diazinon were highly concordant with those of an organochlorine pesticide (dieldrin) and a metal (divalent nickel). We also performed similar evaluations for the cystine/glutamate exchanger, which provides protection against oxidative stress by moving cystine into the cell; again, chlorpyrifos had the greatest effect, in this case reducing expression in undifferentiated and differentiating cells. Our results point to excitotoxicity and oxidative stress as major contributors to the noncholinesterase mechanisms that distinguish the neurodevelopmental outcomes between different organophosphates while providing a means whereby apparently unrelated neurotoxicants may produce similar outcomes.
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Affiliation(s)
- Theodore A Slotkin
- Department of Pharmacology & Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA.
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40
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Jokanović M, Kosanović M. Neurotoxic effects in patients poisoned with organophosphorus pesticides. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2010; 29:195-201. [PMID: 21787602 DOI: 10.1016/j.etap.2010.01.006] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2009] [Revised: 01/07/2010] [Accepted: 01/26/2010] [Indexed: 05/31/2023]
Abstract
In this paper we review neurotoxic disorders appearing in patients poisoned with organophosphorus pesticides. These compounds cause four important neurotoxic effects in humans: the cholinergic syndrome, the intermediate syndrome, organophosphate-induced delayed polyneuropathy (OPIDP) and chronic organophosphate-induced neuropsychiatric disorder (COPIND). Compared to the cholinergic syndrome, that causes millions of cases of poisoning each year, other disorders involve much smaller numbers of patients. The review is focused on the neurotoxic effects appearing after acute and chronic exposure to organophosphates with emphasis on clinical presentation, pathogenesis, molecular mechanisms, and possibilities for prevention/therapy.
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Affiliation(s)
- Milan Jokanović
- Faculty of Medicine, University of Nish, Nish, Serbia; Academy of Sciences and Arts of Republic Srpska, Banja Luka, Bosnia and Herzegovina
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41
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MacFarlane E, Benke G, Del Monaco A, Sim MR. Causes of Death and Incidence of Cancer in a Cohort of Australian Pesticide-Exposed Workers. Ann Epidemiol 2010; 20:273-80. [DOI: 10.1016/j.annepidem.2010.01.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Revised: 12/20/2009] [Accepted: 01/11/2010] [Indexed: 10/19/2022]
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Anxiety in adult female mice following perinatal exposure to chlorpyrifos. Neurotoxicol Teratol 2010; 32:234-9. [PMID: 19716890 DOI: 10.1016/j.ntt.2009.08.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Revised: 08/19/2009] [Accepted: 08/20/2009] [Indexed: 11/20/2022]
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Wright LKM, Liu J, Nallapaneni A, Pope CN. Behavioral sequelae following acute diisopropylfluorophosphate intoxication in rats: comparative effects of atropine and cannabinomimetics. Neurotoxicol Teratol 2009; 32:329-35. [PMID: 20034559 DOI: 10.1016/j.ntt.2009.12.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Revised: 12/15/2009] [Accepted: 12/15/2009] [Indexed: 11/28/2022]
Abstract
The comparative effects of atropine and the indirect cannabinomimetics URB597 (a fatty acid amide hydrolase inhibitor) and URB602 (a monoacylglycerol lipase inhibitor) on functional and neurobehavioral endpoints following acute diisopropylfluorophosphate intoxication were studied. Male Sprague-Dawley rats were treated with vehicle or DFP (2.5mg/kg, sc), immediately post-treated with either vehicle, atropine (16mg/kg), URB597 (3mg/kg), URB602 (10mg/kg) or a combination of URB597 and URB602, and functional signs of toxicity as well as nocturnal motor activity were measured daily for seven consecutive days. Performance in the elevated plus maze (for anxiety-like behavior) and the forced swimming test (for depression-like behavior) was measured at days 6-8 and 27-29 after dosing. Twenty-four hours after dosing, DFP markedly reduced cholinesterase activity in selected brain regions and peripheral tissues (diaphragm and plasma). Substantial recovery of cholinesterase activity was noted at both 8 and 29days after dosing but significant inhibition was still noted in some brain regions at the latest time-point. DFP elicited body weight reductions and typical signs of cholinergic toxicity, and reduced nocturnal ambulation and rearing. Atropine and the cannabinomimetics (alone and in combination) partially attenuated DFP-induced functional signs of toxicity. None of the post-treatments reversed the DFP-induced reduction in ambulation or rearing, however. No significant treatment-related effects on elevated plus maze performance were noted. DFP-treated rats exhibited decreased swimming and increased immobility in the forced swimming test at both time-points. None of the post-treatments had any effect on DFP-induced changes in immobility or swimming at day 8. At day 29, atropine and the combination of URB597/URB602 significantly blocked DFP-induced changes in immobility, while URB597 and the combination reversed DFP-induced changes in swimming. The results suggest that early blockade of muscarinic receptors and enhancement of eCB signaling can attenuate both acute and delayed effects elicited by DFP.
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Affiliation(s)
- Linnzi K M Wright
- Department of Physiological Sciences, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK 74078, United States
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44
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Exposure to methamidophos at adulthood elicits depressive-like behavior in mice. Neurotoxicology 2009; 30:471-8. [DOI: 10.1016/j.neuro.2009.01.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2008] [Revised: 12/19/2008] [Accepted: 01/24/2009] [Indexed: 11/18/2022]
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45
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Slotkin TA, Levin ED, Seidler FJ. Developmental neurotoxicity of parathion: progressive effects on serotonergic systems in adolescence and adulthood. Neurotoxicol Teratol 2009; 31:11-7. [PMID: 18773955 PMCID: PMC2630364 DOI: 10.1016/j.ntt.2008.08.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2008] [Revised: 08/04/2008] [Accepted: 08/04/2008] [Indexed: 01/31/2023]
Abstract
Neonatal exposures to organophosphates that are not acutely symptomatic or that produce little or no cholinesterase inhibition can nevertheless compromise the development and later function of critical neural pathways, including serotonin (5HT) systems that regulate emotional behaviors. We administered parathion to newborn rats on postnatal days (PN) 1-4 at doses spanning the threshold for detectable cholinesterase inhibition (0.1 mg/kg/day) and the first signs of loss of viability (0.2 mg/kg/day). In adolescence (PN30), young adulthood (PN60) and full adulthood (PN100), we measured radioligand binding to 5HT(1A) and 5HT(2) receptors, and to the 5HT transporter in the brain regions comprising all the major 5HT projections and 5HT cell bodies. Parathion caused a biphasic effect over later development with initial, widespread upregulation of 5HT(1A) receptors that peaked in the frontal/parietal cortex by PN60, followed by a diminution of that effect in most regions and emergence of deficits at PN100. There were smaller, but statistically significant changes in 5HT(2) receptors and the 5HT transporter. These findings stand in strong contrast to previous results with neonatal exposure to a different organophosphate, chlorpyrifos, which evoked parallel upregulation of all three 5HT synaptic proteins that persisted from adolescence through full adulthood and that targeted males much more than females. Our results support the view that the various organophosphates have disparate effects on 5HT systems, distinct from their shared property as cholinesterase inhibitors, and the targeting of 5HT function points toward the importance of studying the impact of these agents on 5HT-linked behaviors.
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MESH Headings
- Aging/physiology
- Animals
- Body Weight/drug effects
- Cholinesterase Inhibitors/toxicity
- Data Interpretation, Statistical
- Female
- Insecticides/toxicity
- Male
- Neurotoxicity Syndromes/psychology
- Organ Size/drug effects
- Parathion/toxicity
- Pregnancy
- Radioligand Assay
- Rats
- Rats, Sprague-Dawley
- Receptor, Serotonin, 5-HT1A/drug effects
- Receptor, Serotonin, 5-HT1A/physiology
- Receptors, Serotonin, 5-HT2/drug effects
- Receptors, Serotonin, 5-HT2/physiology
- Serotonin/physiology
- Serotonin Plasma Membrane Transport Proteins/metabolism
- Sex Characteristics
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Affiliation(s)
- Theodore A Slotkin
- Department of Pharmacology & Cancer Biology, Duke University Medical Center, Durham, North Carolina, USA.
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Slotkin TA, Seidler FJ. Developmental neurotoxicants target neurodifferentiation into the serotonin phenotype: Chlorpyrifos, diazinon, dieldrin and divalent nickel. Toxicol Appl Pharmacol 2008; 233:211-9. [PMID: 18835401 DOI: 10.1016/j.taap.2008.08.020] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Revised: 08/26/2008] [Accepted: 08/27/2008] [Indexed: 01/30/2023]
Abstract
Developmental exposure to organophosphates (OP) produces long-term changes in serotonin (5HT) synaptic function and associated behaviors, but there are disparities among the different OPs. We contrasted effects of chlorpyrifos and diazinon, as well as non-OP neurotoxicants (dieldrin, Ni(2+)) using undifferentiated and differentiating PC12 cells, a well-established neurodevelopmental model. Agents were introduced at 30 microM for 24 or 72 h, treatments devoid of cytotoxicity, and we evaluated the mRNAs encoding the proteins for 5HT biosynthesis, storage and degradation, as well as 5HT receptors. Chlorpyrifos and diazinon both induced tryptophan hydroxylase, the rate-limiting enzyme for 5HT biosynthesis, but chlorpyrifos had a greater effect, and both agents suppressed expression of 5HT transporter genes, effects that would tend to augment extracellular 5HT. However, whereas chlorpyrifos enhanced the expression of most 5HT receptor subtypes, diazinon evoked overall suppression. Dieldrin evoked even stronger induction of tryptophan hydroxylase, and displayed a pattern of receptor effects similar to that of diazinon, even though they come from different pesticide classes. In contrast, Ni(2+) had completely distinct actions, suppressing tryptophan hydroxylase and enhancing the vesicular monoamine transporter, while also reducing 5HT receptor gene expression, effects that would tend to lower net 5HT function. Our findings provide some of the first evidence connecting the direct, initial mechanisms of developmental neurotoxicant action on specific transmitter pathways with their long-term effects on synaptic function and behavior, while also providing support for in vitro test systems as tools for establishing mechanisms and outcomes of related and unrelated neurotoxicants.
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Affiliation(s)
- Theodore A Slotkin
- Department of Pharmacology and Cancer Biology Box 3813, Duke University Medical Center, Durham, NC 27710, USA.
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