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Toxicity of Pesticides and Legacy Pollutants

A special issue of International Journal of Environmental Research and Public Health (ISSN 1660-4601). This special issue belongs to the section "Toxicology and Public Health".

Deadline for manuscript submissions: closed (31 August 2020) | Viewed by 21600

Special Issue Editor


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Guest Editor
Environmental Studies and Biology, Alma College, Alma, MI 48801, USA
Interests: pesticides; soils; sediments; bioavailability; macroinvertebrates; toxicity; bioaccumulation

Special Issue Information

Dear Colleagues,

While the toxic effects of pesticides and legacy pollutants on human and environmental health have been studied for decades, there have been many recent advancements in the evaluation of these chemicals. The focus of this Special Issue will be on new methods for the identification, evaluation, and risk assessment of pesticides and legacy pollutants that impact on human and/or environmental health. Related topics could include, but are not limited to, novel techniques in exposure assessment; recently identified biomarkers; impacts of new pesticides; newly recognized chronic effects of pesticides or legacy pollutants; advances in risk assessment methods; fate and transport modelling in risk assessment; toxicity assessment of chemical mixtures; developments in analytical quantification. This Special Issue is open to research, case-studies, or review papers on the toxic effects of pesticides and legacy pollutants on human or environmental health.   

Dr. Amanda D. Harwood
Guest Editor

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Keywords

  • Pesticides
  • Legacy pollutants
  • Risk assessment
  • Environmental Health
  • Analytical methods for pesticides
  • Analytical methods for legacy pollutants
  • Exposure assessments
  • Biomarkers

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Published Papers (5 papers)

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Research

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16 pages, 1944 KiB  
Article
The Bisphenol A Induced Oxidative Stress in Non-Alcoholic Fatty Liver Disease Male Patients: A Clinical Strategy to Antagonize the Progression of the Disease
by Alessandro Federico, Marcello Dallio, Antonietta Gerarda Gravina, Nadia Diano, Sonia Errico, Mario Masarone, Mario Romeo, Concetta Tuccillo, Paola Stiuso, Filomena Morisco, Marcello Persico and Carmelina Loguercio
Int. J. Environ. Res. Public Health 2020, 17(10), 3369; https://doi.org/10.3390/ijerph17103369 - 12 May 2020
Cited by 16 | Viewed by 3421
Abstract
Introduction: Bisphenol A (BPA) exposure has been correlated to non-alcoholic fatty liver disease (NAFLD) development and progression. We investigated, in a clinical model, the effects of the administration of 303 mg of silybin phospholipids complex, 10 μg of vitamin D, and 15 [...] Read more.
Introduction: Bisphenol A (BPA) exposure has been correlated to non-alcoholic fatty liver disease (NAFLD) development and progression. We investigated, in a clinical model, the effects of the administration of 303 mg of silybin phospholipids complex, 10 μg of vitamin D, and 15 mg of vitamin E (RealSIL, 100D, IBI-Lorenzini, Aprilia, Italy) in male NAFLD patients exposed to BPA on metabolic, hormonal, and oxidative stress-related parameters. Methods: We enrolled 32 male patients with histologic diagnosis of NAFLD and treated them with Realsil 100D twice a day for six months. We performed at baseline clinical, biochemical, and food consumption assessments as well as the evaluation of physical exercise, thiobarbituric acid reactive substances (TBARS), plasmatic and urinary BPA and estrogen levels. The results obtained were compared with those of healthy control subjects and, in the NAFLD group, between baseline and the end of treatment. Results: A direct proportionality between TBARS levels and BPA exposure was shown (p < 0.0001). The therapy determined a reduction of TBARS levels (p = 0.011), an improvement of alanine aminotransferase, aspartate aminotransferase, insulinemia, homeostatic model assessment insulin resistance, C reactive protein, tumor necrosis factor alpha (p < 0.05), an increase of conjugated BPA urine amount, and a reduction of its free form (p < 0.0001; p = 0.0002). Moreover, the therapy caused an increase of plasmatic levels of the native form of estrogens (p = 0.03). Conclusions: We highlighted the potential role of BPA in estrogen oxidation and oxidative stress in NAFLD patients. The use of Realsil 100D could contribute to fast BPA detoxification and to improve cellular antioxidant power, defending the integrity of biological estrogen-dependent pathways. Full article
(This article belongs to the Special Issue Toxicity of Pesticides and Legacy Pollutants)
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22 pages, 2435 KiB  
Article
Long-Term Fipronil Treatment Induces Hyperactivity in Female Mice
by Svenja Koslowski, Camille Latapy, Pierrïck Auvray, Marc Blondel and Laurent Meijer
Int. J. Environ. Res. Public Health 2020, 17(5), 1579; https://doi.org/10.3390/ijerph17051579 - 29 Feb 2020
Cited by 16 | Viewed by 3973
Abstract
Fipronil is an insecticide widely used for veterinary and agricultural purposes. While its insecticidal properties mostly rely on its high affinity antagonistic activity on insect γ aminobutyric acid (GABA) receptors, fipronil and its main metabolite fipronil sulfone nevertheless display non-negligible affinity for mammalian [...] Read more.
Fipronil is an insecticide widely used for veterinary and agricultural purposes. While its insecticidal properties mostly rely on its high affinity antagonistic activity on insect γ aminobutyric acid (GABA) receptors, fipronil and its main metabolite fipronil sulfone nevertheless display non-negligible affinity for mammalian GABAA receptor. As several environmental toxicants have been shown to raise the risk of developing various neurodegenerative disorders, the aim of this study was to evaluate whether long-term low dose administration of fipronil could lead to cognitive deficiencies. Our results indicate that long-term fipronil treatment leads to behavioral perturbations in mice, indicating an accumulative effect of sustained exposure to low dose of fipronil. Although no memory impairment was observed during the course of our study, we noticed a significant hyperlocomotion behavior after 43 weeks of weekly fipronil administration, which is consistent with its direct effect on the GABAergic system. Full article
(This article belongs to the Special Issue Toxicity of Pesticides and Legacy Pollutants)
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20 pages, 1895 KiB  
Article
Chloroanisoles and Chlorophenols Explain Mold Odor but Their Impact on the Swedish Population Is Attributed to Dampness and Mold
by Johnny C. Lorentzen, Stephanie A. Juran, Lena Ernstgård, Mats J. Olsson and Gunnar Johanson
Int. J. Environ. Res. Public Health 2020, 17(3), 930; https://doi.org/10.3390/ijerph17030930 - 3 Feb 2020
Cited by 7 | Viewed by 3867
Abstract
We recently reported that mold odor may be explained by chloroanisoles (CAs) formed by microbial biotransformation of chlorophenols (CPs) in legacy wood preservatives. Here we examine psychophysical aspects of CAs and trace their historic origins in buildings. Our exposure of healthy volunteers shows [...] Read more.
We recently reported that mold odor may be explained by chloroanisoles (CAs) formed by microbial biotransformation of chlorophenols (CPs) in legacy wood preservatives. Here we examine psychophysical aspects of CAs and trace their historic origins in buildings. Our exposure of healthy volunteers shows that 2,4,6-triCA is often perceived as unpleasant, characterized as musty or moldy and is detected at 13 ng/m3 or lower. Similar concentrations are reported in buildings with odor complaints. Scrutiny of written records reveal that new building construction methods were introduced in the 1950s, namely crawlspaces and concrete slabs on the ground. These constructions were prone to dampness and attack from wood decay fungi, prompting chemical companies and authorities to advocate preservatives against rot. Simultaneously, CPs became household chemicals used for example in indoor paints. When large-scale odor problems evolved, the authorities that once approved the preservatives attributed the odor to hidden mold, with no evidence that substantial microbial biomass was necessary for odor formation. Thereby the public remained unaware of problematic exposure to CPs and CAs. We conclude that the introduction of inappropriate designs of house foundations and CP-based preservatives once ignited and still provide impetus for indoor air research on “dampness and mold”. Full article
(This article belongs to the Special Issue Toxicity of Pesticides and Legacy Pollutants)
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15 pages, 3246 KiB  
Article
Rapid Biodegradation of the Organophosphorus Insecticide Chlorpyrifos by Cupriavidus nantongensis X1T
by Taozhong Shi, Liancheng Fang, Han Qin, Yifei Chen, Xiangwei Wu and Rimao Hua
Int. J. Environ. Res. Public Health 2019, 16(23), 4593; https://doi.org/10.3390/ijerph16234593 - 20 Nov 2019
Cited by 34 | Viewed by 4223
Abstract
Chlorpyrifos was one of the most widely used organophosphorus insecticides and the neurotoxicity and genotoxicity of chlorpyrifos to mammals, aquatic organisms and other non-target organisms have caused much public concern. Cupriavidus nantongensis X1T, a type of strain of the genus Cupriavidus [...] Read more.
Chlorpyrifos was one of the most widely used organophosphorus insecticides and the neurotoxicity and genotoxicity of chlorpyrifos to mammals, aquatic organisms and other non-target organisms have caused much public concern. Cupriavidus nantongensis X1T, a type of strain of the genus Cupriavidus, is capable of efficiently degrading 200 mg/L of chlorpyrifos within 48 h. This is ~100 fold faster than Enterobacter B-14, a well-studied chlorpyrifos-degrading bacterial strain. Strain X1T can tolerate high concentrations (500 mg/L) of chlorpyrifos over a wide range of temperatures (30–42 °C) and pH values (5–9). RT-qPCR analysis showed that the organophosphorus hydrolase (OpdB) in strain X1T was an inducible enzyme, and the crude enzyme isolated in vitro could still maintain 75% degradation activity. Strain X1T can simultaneously degrade chlorpyrifos and its main hydrolysate 3,5,6-trichloro-2-pyridinol. TCP could be further metabolized through stepwise oxidative dechlorination and further opening of the benzene ring to be completely degraded by the tricarboxylic acid cycle. The results provide a potential means for the remediation of chlorpyrifos- contaminated soil and water. Full article
(This article belongs to the Special Issue Toxicity of Pesticides and Legacy Pollutants)
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Review

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18 pages, 1503 KiB  
Review
Bisphenols as a Legacy Pollutant, and Their Effects on Organ Vulnerability
by Jong-Joo Kim, Surendra Kumar, Vinay Kumar, Yun-Mi Lee, You-Sam Kim and Vijay Kumar
Int. J. Environ. Res. Public Health 2020, 17(1), 112; https://doi.org/10.3390/ijerph17010112 - 22 Dec 2019
Cited by 41 | Viewed by 5487
Abstract
Bisphenols are widely used in the synthesis of polycarbonate plastics, epoxy resins, and thermal paper, which are used in manufacturing items of daily use. Packaged foods and drinks are the main sources of exposure to bisphenols. These chemicals affect humans and animals by [...] Read more.
Bisphenols are widely used in the synthesis of polycarbonate plastics, epoxy resins, and thermal paper, which are used in manufacturing items of daily use. Packaged foods and drinks are the main sources of exposure to bisphenols. These chemicals affect humans and animals by disrupting the estrogen, androgen, progesterone, thyroid, and aryl hydrocarbon receptor functions. Bisphenols exert numerous harmful effects because of their interaction with receptors, reactive oxygen species (ROS) formation, lipid peroxidation, mitochondrial dysfunction, and cell signal alterations. Both cohort and case-control studies have determined an association between bisphenol exposure and increased risk of cardiovascular diseases, neurological disorders, reproductive abnormalities, obesity, and diabetes. Prenatal exposure to bisphenols results in developmental disorders in animals. These chemicals also affect the immune cells and play a significant role in initiating the inflammatory response. Exposure to bisphenols exhibit age, gender, and dose-dependent effects. Even at low concentrations, bisphenols exert toxicity, and hence deserve a critical assessment of their uses. Since bisphenols have a global influence on human health, the need to discover the underlying pathways involved in all disease conditions is essential. Furthermore, it is important to promote the use of alternatives for bisphenols, thereby restricting their uses. Full article
(This article belongs to the Special Issue Toxicity of Pesticides and Legacy Pollutants)
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