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Abstract
Chemicals are measured regularly in air, food, the environment, and the workplace. Biomonitoring of chemicals in biological fluids is a tool to determine the individual exposure. Blood protein adducts of xenobiotics are a marker of both exposure and the biologically effective dose. Urinary metabolites and blood metabolites are short term exposure markers. Stable hemoglobin adducts are exposure markers of up to 120 days. Blood protein adducts are formed with many xenobiotics at different sites of the blood proteins. Newer methods apply the techniques developed in the field of proteomics. Larger adducted peptides with 20 amino acids are used for quantitation. Unfortunately, at present the methods do not reach the limits of detection obtained with the methods looking at single amino acid adducts or at chemically cleaved adducts. Therefore, to progress in the field new approaches are needed.
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Zhou J, Zhu X, Dong Y, Yang B, Lu R, Xing G, Wang S, Li F. Type 2 diabetes mellitus potentiates acute acrylonitrile toxicity: Potentiation reduction by phenethyl isothiocyanate. Toxicol Ind Health 2021; 37:695-704. [PMID: 34643460 DOI: 10.1177/07482337211048583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Acrylonitrile (AN) is a known animal carcinogen and suspected human carcinogen. Recently, occupational exposure to AN has considerably increased. Previously, we demonstrated that streptozotocin-induced diabetes potentiates AN-induced acute toxicity in rats and that the induced cytochrome P450 2E1 (CYP2E1) is responsible for this effect. In the present study, we examined whether induction of CYP2E1 is also the underlying mechanism for the potentiation of AN-induced acute toxicity in type 2 diabetes in db/db mice. The effect of phenethyl isothiocyanate (PEITC) in reducing potentiation was also investigated. The mice were randomly divided into the normal control, diabetic control, AN, diabetes + AN, PEITC + AN, and diabetes + PEITC + AN groups. PEITC (40 mg/kg) was orally administered to rats for 3 days, and 1 h after the last PEITC gavage, 45 mg/kg AN was intraperitoneally injected. Time to death was observed. The CYP2E1 level and enzymatic activity, cytochrome c oxidase (CCO) activity, and reactive oxygen species (ROS) levels were measured. The survival rate was decreased in AN-treated db/db mice compared with that in AN-treated wild-type mice. The hepatic CYP2E1 level and enzymatic activity remained unaltered in db/db mice. Phenethyl isothiocyanate alleviated AN-induced acute toxicity in db/db mice as evident in the increased survival rate, restored CCO activity, and decreased ROS level in both the liver and brain. The study results suggested that CYP2E1 may not be responsible for the sensitivity to AN-induced acute toxicity in db/db mice and that PEITC reduced the potentiation of AN-induced acute toxicity in db/db mice.
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Affiliation(s)
- Jie Zhou
- School of Medicine, 12676Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xueyu Zhu
- School of Medicine, 12676Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ying Dong
- Department of Clinical Laboratory, Rugao Municipal People's Hospital, Rugao, Jiangsu, China
| | - Bobo Yang
- School of Medicine, 12676Jiangsu University, Zhenjiang, Jiangsu, China
| | - Rongzhu Lu
- School of Medicine, 12676Jiangsu University, Zhenjiang, Jiangsu, China
| | - Guangwei Xing
- School of Medicine, 12676Jiangsu University, Zhenjiang, Jiangsu, China
| | - Suhua Wang
- School of Medicine, 12676Jiangsu University, Zhenjiang, Jiangsu, China
| | - Fang Li
- School of Medicine, 12676Jiangsu University, Zhenjiang, Jiangsu, China
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Forsberg E, Öberg L, Artursson E, Wigenstam E, Bucht A, Thors L. Decontamination efficacy of soapy water and water washing following exposure of toxic chemicals on human skin. Cutan Ocul Toxicol 2020; 39:134-142. [DOI: 10.1080/15569527.2020.1748046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Emma Forsberg
- Division of CBRN Defence and Security, Swedish Defence Research Agency, Umeå, Sweden
| | - Linda Öberg
- Division of CBRN Defence and Security, Swedish Defence Research Agency, Umeå, Sweden
| | - Elisabet Artursson
- Division of CBRN Defence and Security, Swedish Defence Research Agency, Umeå, Sweden
| | - Elisabeth Wigenstam
- Division of CBRN Defence and Security, Swedish Defence Research Agency, Umeå, Sweden
| | - Anders Bucht
- Division of CBRN Defence and Security, Swedish Defence Research Agency, Umeå, Sweden
| | - Lina Thors
- Division of CBRN Defence and Security, Swedish Defence Research Agency, Umeå, Sweden
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Li F, Dong Y, Lu R, Yang B, Wang S, Xing G, Jiang Y. Susceptibility to the acute toxicity of acrylonitrile in streptozotocin-induced diabetic rats: protective effect of phenethyl isothiocyanate, a phytochemical CYP2E1 inhibitor. Drug Chem Toxicol 2019; 44:130-139. [PMID: 31258002 DOI: 10.1080/01480545.2019.1566354] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Diabetes mellitus is a significant global public health issue. The diabetic state not only precipitates chronic disease but also has the potential to change the toxicity of drugs and chemicals. Acrylonitrile (AN) is a potent neurotoxin widely used in industrial products. This study used a streptozotocin (STZ)-induced diabetic rat model to examine the role of cytochrome P450 2E1 (CYP2E1) in acute AN toxicity. The protective effect of phenethyl isothiocyanate (PEITC), a phytochemical inhibitor of CYP2E1, was also investigated. A higher incidence of convulsions and loss of the righting reflex, and decreased rates of survival, as well as elevated CYP2E1 activity, were observed in diabetic rats treated with AN when compared to those in non-diabetic rats, suggesting that diabetes confers susceptibility to the acute toxicity of AN. Pretreatment with PEITC (20-80 mg/kg) followed by AN injection alleviated the acute toxicity of AN in diabetic rats as evidenced by the decreased incidence of convulsions and loss of righting reflex, and increased rates of survival. PEITC pretreatment at 40 and 80 mg/kg decreased hepatic CYP2E1 activity in AN-exposed diabetic rats. PEITC pretreatment (20 mg/kg) increased the glutathione (GSH) content and glutathione S-transferase (GST) activity and further decreased ROS levels in AN-exposed diabetic rats. Collectively, STZ-induced diabetic rats were more sensitive to AN-induced acute toxicity mainly due to CYP2E1 induction, and PEITC pretreatment significantly alleviated the acute toxicity of AN in STZ-induced diabetic rats. PEITC might be considered as a potential effective chemo-preventive agent against AN-induced acute toxicity in individuals with an underlying diabetic condition.
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Affiliation(s)
- Fang Li
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, PR China
| | - Ying Dong
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, PR China
| | - Rongzhu Lu
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, PR China
| | - Bobo Yang
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, PR China
| | - Suhua Wang
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, PR China
| | - Guangwei Xing
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, PR China
| | - Yuanyue Jiang
- Department of Preventive Medicine and Public Health Laboratory Sciences, School of Medicine, Jiangsu University, Zhenjiang, PR China
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Li F, Lu R, Zhao T, Zhang X, Wang S, Xing G. Comparing the protective effects of three sulfur compounds against acrylonitrile-induced acute toxicity in CYP2E1-induced rats. Toxicol Ind Health 2019; 35:387-397. [PMID: 30991910 DOI: 10.1177/0748233719839847] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cytochrome P450 2E1 (CYP2E1) can be induced by diabetes mellitus, nonalcoholic liver disease, and obesity. This study assessed the protective effects of three sulfur compounds, namely phenethyl isothiocyanate (PEITC), dimethyl trisulfide (DMTS), and sodium thiosulfate (STS), on acrylonitrile (ACN)-induced acute toxicity in rats enriched with CYP2E1. PEITC and DMTS were administered intragastrically (i.g.), whereas STS was injected intraperitoneally (i.p.) at an identical dose of 0.5 mmol/kg for 3 days in acetone-pretreated rats before ACN (90 mg/kg) injection (i.p.). Acetone-treated rats that expressed high levels of CYP2E1 were more susceptible to ACN-induced acute toxicity. The sulfur compounds reduced the rate of convulsions and loss of the righting reflex in acute ACN-exposed CYP2E1-induced rats; PEITC and DMTS also increased the survival rates. PEITC inhibited hepatic CYP2E1 activity and protected hepatic and cerebral cytochrome c oxidase (CcOx) activities in acute ACN-exposed CYP2E1-enriched rats; DMTS protected hepatic CcOx activity. DMTS attenuated ACN-induced oxidative injury by reducing malondialdehyde (MDA) levels and increasing glutathione content in the brain. STS only reduced cerebral MDA levels, whereas PEITC did not exhibit any antioxidant effects. Collectively, PEITC provided superior protective effects against ACN-induced acute toxicity in rats with increased CYP2E1 activity, followed by DMTS; STS provided limited effects. PEITC and DMTS might be considered as promising chemopreventive agents against ACN-induced acute toxicity in vulnerable subpopulations with increased CYP2E1 activity.
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Affiliation(s)
- Fang Li
- 1 School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Rongzhu Lu
- 1 School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Ting Zhao
- 2 School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xinyu Zhang
- 1 School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Suhua Wang
- 1 School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Guangwei Xing
- 1 School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
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Scheepers PT, Cocker J. Human biomonitoring with or without limits? Progress in the analysis of biomarkers of xenobiotics and some opportunities for improved interpretation. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.02.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Simons K, De Smedt T, Stove C, De Paepe P, Bader M, Nemery B, Vleminckx C, De Cremer K, Van Overmeire I, Fierens S, Mertens B, Göen T, Schettgen T, Van Oyen H, Van Loco J, Van Nieuwenhuyse A. Short-term health effects in the general population following a major train accident with acrylonitrile in Belgium. ENVIRONMENTAL RESEARCH 2016; 148:256-263. [PMID: 27085497 DOI: 10.1016/j.envres.2016.03.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 03/22/2016] [Accepted: 03/23/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Following a train derailment, several tons of acrylonitrile (ACN) exploded, inflamed and part of the ACN ended up in the sewage system of the village of Wetteren. More than 2000 residents living in the close vicinity of the accident and along the sewage system were evacuated. A human biomonitoring study of the adduct N-2-cyanoethylvaline (CEV) was carried out days 14-21 after the accident. OBJECTIVES (1) To describe the short-term health effects that were reported by the evacuated residents following the train accident, and (2) to explore the association between the CEV concentrations, extrapolated at the time of the accident, and the self-reported short-term health effects. METHODS Short-term health effects were reported in a questionnaire (n=191). An omnibus test of independence was used to investigate the association between the CEV concentrations and the symptoms. Dose-response relationships were quantified by Generalized Additive Models (GAMs). RESULTS The most frequently reported symptoms were local symptoms of irritation. In non-smokers, dose-dependency was observed between the CEV levels and the self-reporting of irritation (p=0.007) and nausea (p=0.007). Almost all non-smokers with CEV concentrations above 100pmol/g globin reported irritation symptoms. Both absence and presence of symptoms was reported by non-smokers with CEV concentrations below the reference value and up to 10 times the reference value. Residents who visited the emergency services reported more symptoms. This trend was seen for the whole range of CEV concentrations, and thus independently of the dose. DISCUSSION AND CONCLUSION The present study is one of the first to relate exposure levels to a chemical released during a chemical incident to short-term (self-reported) health effects. A dose-response relation was observed between the CEV concentrations and the reporting of short-term health effects in the non-smokers. Overall, the value of self-reported symptoms to assess exposure showed to be limited. The results of this study confirm that a critical view should be taken when considering self-reported health complaints and that ideally biomarkers are monitored to allow an objective assessment of exposure.
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Affiliation(s)
- K Simons
- Scientific Institute of Public Health, Brussels, Belgium.
| | - T De Smedt
- Scientific Institute of Public Health, Brussels, Belgium.
| | - C Stove
- Ghent University, Laboratory of Toxicology, Department of Bioanalysis, Ghent, Belgium.
| | - P De Paepe
- Ghent University Hospital, Department of Emergency Medicine, Ghent, Belgium.
| | - M Bader
- BASF SE, Occupational Medicine & Health Protection, Ludwigshafen, Germany.
| | - B Nemery
- Katholieke Universiteit Leuven, Department of Public Health and Primary Care, Centre for Environment and Health, Leuven, Belgium.
| | - C Vleminckx
- Scientific Institute of Public Health, Brussels, Belgium.
| | - K De Cremer
- Scientific Institute of Public Health, Brussels, Belgium.
| | | | - S Fierens
- Scientific Institute of Public Health, Brussels, Belgium.
| | - B Mertens
- Scientific Institute of Public Health, Brussels, Belgium.
| | - T Göen
- University of Erlangen-Nuremberg, Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine, Erlangen, Germany.
| | - T Schettgen
- RWTH Aachen University, Institute for Occupational and Social Medicine, Medical Faculty, Aachen, Germany.
| | - H Van Oyen
- Scientific Institute of Public Health, Brussels, Belgium.
| | - J Van Loco
- Scientific Institute of Public Health, Brussels, Belgium.
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Identifying a role for human biomonitoring in incidents involving hazardous materials. Toxicol Lett 2014; 231:291-4. [DOI: 10.1016/j.toxlet.2014.11.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Acrylonitrile exposure assessment in the emergency responders of a major train accident in Belgium: A human biomonitoring study. Toxicol Lett 2014; 231:352-9. [DOI: 10.1016/j.toxlet.2014.08.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 08/08/2014] [Accepted: 08/11/2014] [Indexed: 11/20/2022]
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