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Sanz-Serrano J, Garayoa R, Vitas AI, López de Cerain A, Azqueta A. In vitro genotoxicity assessment of French fries from mass catering companies: a preliminary study. Mutagenesis 2022; 38:51-57. [PMID: 36242551 PMCID: PMC9897018 DOI: 10.1093/mutage/geac021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 10/02/2022] [Indexed: 02/07/2023] Open
Abstract
It is generally assumed that French fries are likely to have weak in vitro mutagenic activity, but most studies thereof have only assessed gene mutations. In this article, the genotoxicity of 10 extracts of French fries was assessed using the in vitro micronucleus test (following the principles of the OECD 487 guidelines). Each sample was obtained from a different mass catering company in Navarra (Spain). This assay, together with the Ames test, is recommended in the basic in vitro phase included in the European Food Safety Authority Opinion on Genotoxicity Testing Strategies Applicable to Food and Feed Safety Assessment. Eight of 10 samples from mass catering companies induced chromosomal aberrations in the in vitro micronucleus test. Moreover, French fries deep-fried in the laboratory for different periods of time (0, 3, 5, 10, 20, 30 min) were assessed using the in vitro micronucleus test. Genotoxicity was observed in all time periods from 3 min on. The biological relevance of these results must be further explored.
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Affiliation(s)
- Julen Sanz-Serrano
- Corresponding author. Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, Universidad de Navarra, Irunlarrea 1, 31008 Pamplona, Spain. E-mail:
| | - Roncesvalles Garayoa
- Department of Nutrition, Food Science and Physiology, Universidad de Navarra, School of Pharmacy and Nutrition, Irunlarrea 1, 31008 Pamplona, Spain
| | - Ana Isabel Vitas
- IdiSNA, Navarra Institute for Health Research, Irunlarrea 3, 31008, Pamplona, Spain,Department of Microbiology and Parasitology, School of Medicine, Universidad de Navarra, Irunlarrea 1, 31008, Pamplona, Spain
| | - Adela López de Cerain
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, Universidad de Navarra, Irunlarrea 1, 31008 Pamplona, Spain,IdiSNA, Navarra Institute for Health Research, Irunlarrea 3, 31008, Pamplona, Spain
| | - Amaya Azqueta
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, Universidad de Navarra, Irunlarrea 1, 31008 Pamplona, Spain,IdiSNA, Navarra Institute for Health Research, Irunlarrea 3, 31008, Pamplona, Spain
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Shimamura Y, Yui T, Horiike H, Masuda S. Toxicity of combined exposure to acrylamide and Staphylococcus aureus. Toxicol Rep 2022; 9:876-882. [DOI: 10.1016/j.toxrep.2022.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 04/17/2022] [Accepted: 04/18/2022] [Indexed: 11/26/2022] Open
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Zhang Y, Wang Q, Li Y, Cheng J, Chen X, Zhang Y. Comprehensive profile of DNA adducts as both tissue and urinary biomarkers of exposure to acrylamide and chemo-preventive effect of catechins in rats. CHEMOSPHERE 2022; 286:131852. [PMID: 34416594 DOI: 10.1016/j.chemosphere.2021.131852] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/06/2021] [Accepted: 08/08/2021] [Indexed: 06/13/2023]
Abstract
Two representative DNA adducts from acrylamide exposure, N7-(2-carbamoyl-2-hydroxyethyl) guanine (N7-GA-Gua) and N3-(2-carbamoyl-2-hydroxyethyl) adenine (N3-GA-Ade), are important long-term exposure biomarkers for evaluating genotoxicity of acrylamide. Catechins as natural antioxidants present in tea possess multiple health benefits, and may also have the potential to protect against acrylamide-induced DNA damage. The current study developed an ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) method for simultaneous analysis of N7-GA-Gua and N3-GA-Ade in tissues and urine. The validated UHPLC-MS/MS method showed high sensitivity, with limit of detection and limit of quantification ranging 0.2-0.8 and 0.5-1.5 ng/mL, respectively, and achieved qualified precision (RSD<14.0%) and spiking recovery (87.2%-110.0%) with elution within 6 min, which was suitable for the analysis of the two DNA adducts in different matrices. The levels of N7-GA-Gua and N3-GA-Ade ranged 0.9-11.9 and 0.6-3.5 μg/g creatinine in human urine samples, respectively. To investigate the interventional effects of catechins on the two DNA adducts from acrylamide exposure, rats were supplemented with three types of catechins (tea polyphenols, epigallocatechin gallate, and epicatechin) 30 min before administration with acrylamide. Our results showed that catechins effectively inhibited the formation of DNA adducts from acrylamide exposure in both urine and tissues of rats. Among three catechins, epicatechin performed the best inhibitory effect. The current study provided evidence for the chemo-preventive effect of catechins, indicating that dietary supplement of catechins may contribute to health protection against exposure to acrylamide.
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Affiliation(s)
- Yiju Zhang
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Qiao Wang
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Yaoran Li
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Jun Cheng
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Xinyu Chen
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Yu Zhang
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China.
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Salimi A, Baghal E, Ghobadi H, Hashemidanesh N, Khodaparast F, Seydi E. Mitochondrial, lysosomal and DNA damages induced by acrylamide attenuate by ellagic acid in human lymphocyte. PLoS One 2021; 16:e0247776. [PMID: 33635915 PMCID: PMC7909646 DOI: 10.1371/journal.pone.0247776] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/14/2021] [Indexed: 01/10/2023] Open
Abstract
Acrylamide (AA), is an important contaminant formed during food processing under high temperature. Due to its potential neurotoxicity, reproductive toxicity, hepatotoxicity, immunotoxicity, genotoxicity and carcinogenicity effects, this food contaminant has been recognized as a human health concern. Previous studies showed that acrylamide-induced toxicity is associated with active metabolite of acrylamide by cytochrome P450 enzyme, oxidative stress, mitochondrial dysfunction and DNA damage. In the current study, we investigated the role of oxidative stress in acrylamide's genotoxicity and therapeutic potential role of ellagic acid (EA) in human lymphocytes. Human lymphocytes were simultaneously treated with different concentrations of EA (10, 25 and 50 μM) and acrylamide (50 μM) for 4 h at 37°C. After 4 hours of incubation, the toxicity parameters such cytotoxicity, ROS formation, oxidized/reduced glutathione (GSH/GSSG) content, malondialdehyde (MDA) level, lysosomal membrane integrity, mitochondria membrane potential (ΔΨm) collapse and 8-hydroxy-2'-deoxyguanosine (8-OHdG) were analyzed using biochemical and flow cytometry evaluations. It has been found that acrylamide (50 μM) significantly increased cytotoxicity, ROS formation, GSH oxidation, lipid peroxidation, MMP collapse, lysosomal and DNA damage in human lymphocytes. On the other hand, cotreatment with EA (25 and 50 μM) inhibited AA-induced oxidative stress which subsequently led to decreasing of the cytotoxicity, GSH oxidation, lipid peroxidation, MMP collapse, lysosomal and DNA damage. Together, these results suggest that probably the co-exposure of EA with foods containing acrylamide could decrease mitochondrial, lysosomal and DNA damages, and oxidative stress induced by acrylamide in human body.
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Affiliation(s)
- Ahmad Salimi
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
- Traditional Medicine and Hydrotherapy Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
- * E-mail: , (AS); (ES)
| | - Elahe Baghal
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
- Students Research Committee, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Hassan Ghobadi
- Faculty of Medicine, Internal Medicine Department (Pulmonary Division), Ardabil University of Medical Sciences, Ardabil, Iran
| | - Niloufar Hashemidanesh
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
- Students Research Committee, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Farzad Khodaparast
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
- Students Research Committee, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Enayatollah Seydi
- Department of Occupational Health and Safety Engineering, School of Health, Alborz University of Medical Sciences, Karaj, Iran
- Research Center for Health, Safety and Environment, Alborz University of Medical Sciences, Karaj, Iran
- * E-mail: , (AS); (ES)
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Effect of sampling time on somatic and germ cell mutations induced by acrylamide in gpt delta mice. Genes Environ 2021; 43:4. [PMID: 33597036 PMCID: PMC7890838 DOI: 10.1186/s41021-021-00175-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 02/02/2021] [Indexed: 12/02/2022] Open
Abstract
Background Acrylamide (AA) is a rodent carcinogen and classified by the IARC into Group 2A (probable human carcinogen). AA has been reported to induce mutations in transgenic rodent gene mutation assays (TGR assays), the extent of which is presumed to depend on exposure length and the duration of expression after exposure. In particular, it is not clear in germ cells. To investigate mutagenicity with AA in somatic and germ cells at different sampling times, we conducted TGR assays using gpt delta transgenic mice. Results The male gpt delta mice at 8 weeks of age were treated with AA at 7.5, 15 and 30 mg/kg/day by gavage for 28 days. Peripheral blood was sampled on the last day of the treatment for micronucleus tests and tissues were sampled for gene mutation assays at day 31 and day 77, those being 3 and 49 days after the final treatment (28 + 3d and 28 + 49d), respectively. Another group of mice was treated with N-Ethyl-N-nitrosourea (ENU) at 50 mg/kg/day by intraperitoneal administration for 5 consecutive days and tissues were sampled at the day 31 and day 77 (5 + 26d and 5 + 72d). Frequencies of micronucleated erythrocytes in the peripheral blood significantly increased at AA doses of 15 and 30 mg/kg/day. Two- to three-fold increases in gpt mutation frequencies (MFs) compared to vehicle control were observed in the testes and lung treated with 30 mg/kg/day of AA at both sampling time. In the sperm, the gpt MFs and G:C to T:A transversions were significantly increased at 28 + 3d, but not at 28 + 49d. ENU induced gpt mutations in these tissues were examined at both 5 + 26d and 5 + 72d. A higher mutant frequency in the ENU-treated sperm was observed at 5 + 72d than that at 5 + 26d. Conclusions The gpt MFs in the testes, sperm and lung of the AA-treated mice were determined and compared between different sampling times (3 days or 49 days following 28 day-treatment). These results suggest that spermatogonial stem cells are less sensitive to AA mutagenicity under the experimental condition. Prolonged expression time after exposure to AA to detect mutagenicity may be effective in somatic cells but not in germ cells. Supplementary Information The online version contains supplementary material available at 10.1186/s41021-021-00175-5.
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Hölzl-Armstrong L, Nævisdal A, Cox JA, Long AS, Chepelev NL, Phillips DH, White PA, Arlt VM. In vitro mutagenicity of selected environmental carcinogens and their metabolites in MutaMouse FE1 lung epithelial cells. Mutagenesis 2020; 35:453-463. [PMID: 33399867 PMCID: PMC7846080 DOI: 10.1093/mutage/geaa032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 11/21/2020] [Indexed: 11/12/2022] Open
Abstract
Chemicals in commerce or under development must be assessed for genotoxicity; assessment is generally conducted using validated assays (e.g. Tk mouse lymphoma assay) as part of a regulatory process. Currently, the MutaMouse FE1 cell mutagenicity assay is undergoing validation for eventual use as a standard in vitro mammalian mutagenicity assay. FE1 cells have been shown to be metabolically competent with respect to some cytochrome P450 (CYP) isozymes; for instance, they can convert the human carcinogen benzo[a]pyrene into its proximate mutagenic metabolite. However, some contradictory results have been noted for other genotoxic carcinogens that require two-step metabolic activation (e.g. 2-acetylaminofluorene and 2-amino-3-methylimidazo[4,5-f]quinoxaline). Here, we examined three known or suspected human carcinogens, namely acrylamide, 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) and 4-aminobiphenyl (4-ABP), together with their proximate metabolites (i.e. glycidamide, N-OH-PhIP and N-OH-4-ABP), to aid in the validation of the FE1 cell mutagenicity assay. Assessments of the parent compounds were conducted both in the presence and absence of an exogenous metabolic activation mixture S9; assessments of the metabolites were in the absence of S9. The most potent compound was N-OH-PhIP -S9, which elicited a mutant frequency (MF) level 5.3-fold over background at 5 µM. There was a 4.3-fold increase for PhIP +S9 at 5 µM, a 1.7-fold increase for glycidamide -S9 at 3.5 mM and a 1.5-fold increase for acrylamide +S9 at 4 mM. Acrylamide -S9 elicited a marginal 1.4-fold MF increase at 8 mM. Treatment with PhIP -S9, 4-ABP ±S9 and N-OH-4-ABP -S9 failed to elicit significant increases in lacZ MF with any of the treatment conditions tested. Gene expression of key CYP isozymes was quantified by RT-qPCR. Cyp1a1, 1a2 and 1b1 are required to metabolise PhIP and 4-ABP. Results showed that treatment with both compounds induced expression of Cyp1a1 and Cyp1b1 but not Cyp1a2. Cyp2e1, which catalyses the bioactivation of acrylamide to glycidamide, was not induced after acrylamide treatment. Overall, our results confirm that the FE1 cell mutagenicity assay has the potential for use alongside other, more traditional in vitro mutagenicity assays.
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Affiliation(s)
- Lisa Hölzl-Armstrong
- Department of Analytical, Environmental and Forensic Sciences, MRC-PHE Centre for Environment and Health, King’s College London, London, UK
| | - Andrea Nævisdal
- Department of Analytical, Environmental and Forensic Sciences, MRC-PHE Centre for Environment and Health, King’s College London, London, UK
| | - Julie A Cox
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Alexandra S Long
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Nikolai L Chepelev
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - David H Phillips
- Department of Analytical, Environmental and Forensic Sciences, MRC-PHE Centre for Environment and Health, King’s College London, London, UK
| | - Paul A White
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Volker M Arlt
- Department of Analytical, Environmental and Forensic Sciences, MRC-PHE Centre for Environment and Health, King’s College London, London, UK
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Ibrahim MA, Yasui M, Saha LK, Sasanuma H, Honma M, Takeda S. Enhancing the sensitivity of the thymidine kinase assay by using DNA repair-deficient human TK6 cells. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2020; 61:602-610. [PMID: 32243652 PMCID: PMC7384079 DOI: 10.1002/em.22371] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 05/17/2023]
Abstract
The OECD guidelines define the bioassays of identifying mutagenic chemicals, including the thymidine kinase (TK) assay, which specifically detects the mutations that inactivate the TK gene in the human TK6 lymphoid line. However, the sensitivity of this assay is limited because it detects mutations occurring only in the TK gene but not any other genes. Moreover, the limited sensitivity of the conventional TK assay is caused by the usage of DNA repair-proficient wild-type cells, which are capable of accurately repairing DNA damage induced by chemicals. Mutagenic chemicals produce a variety of DNA lesions, including base lesions, sugar damage, crosslinks, and strand breaks. Base damage causes point mutations and is repaired by the base excision repair (BER) and nucleotide excision repair (NER) pathways. To increase the sensitivity of TK assay, we simultaneously disrupted two genes encoding XRCC1, an important BER factor, and XPA, which is essential for NER, generating XRCC1 -/- /XPA -/- cells from TK6 cells. We measured the mutation frequency induced by four typical mutagenic agents, methyl methane sulfonate (MMS), cis-diamminedichloro-platinum(II) (cisplatin, CDDP), mitomycin-C (MMC), and cyclophosphamide (CP) by the conventional TK assay using wild-type TK6 cells and also by the TK assay using XRCC1 -/- /XPA -/- cells. The usage of XRCC1 -/- /XPA -/- cells increased the sensitivity of detecting the mutagenicity by 8.6 times for MMC, 8.5 times for CDDP, and 2.6 times for MMS in comparison with the conventional TK assay. In conclusion, the usage of XRCC1 -/- /XPA -/- cells will significantly improve TK assay.
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Affiliation(s)
| | - Manabu Yasui
- Division of Genetics and MutagenesisNational Institute of Health SciencesKawasakiKanagawaJapan
| | - Liton Kumar Saha
- Department of Radiation GeneticsKyoto University, Graduate School of MedicineKyotoJapan
- Developmental Therapeutics Branch, Center for Cancer ResearchNational Cancer Institute, NIHBethesdaMarylandUSA
| | - Hiroyuki Sasanuma
- Department of Radiation GeneticsKyoto University, Graduate School of MedicineKyotoJapan
| | - Masamitsu Honma
- Division of Genetics and MutagenesisNational Institute of Health SciencesKawasakiKanagawaJapan
| | - Shunichi Takeda
- Department of Radiation GeneticsKyoto University, Graduate School of MedicineKyotoJapan
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BCPA { N, N'-1,4-Butanediylbis[3-(2-chlorophenyl)acrylamide]} Inhibits Osteoclast Differentiation through Increased Retention of Peptidyl-Prolyl cis-trans Isomerase Never in Mitosis A-Interacting 1. Int J Mol Sci 2018; 19:ijms19113436. [PMID: 30388885 PMCID: PMC6275020 DOI: 10.3390/ijms19113436] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/29/2018] [Accepted: 10/30/2018] [Indexed: 12/20/2022] Open
Abstract
Osteoporosis is caused by an imbalance of osteoclast and osteoblast activities and it is characterized by enhanced osteoclast formation and function. Peptidyl-prolyl cis-trans isomerase never in mitosis A (NIMA)-interacting 1 (Pin1) is a key mediator of osteoclast cell-cell fusion via suppression of the dendritic cell-specific transmembrane protein (DC-STAMP). We found that N,N′-1,4-butanediylbis[3-(2-chlorophenyl)acrylamide] (BCPA) inhibited receptor activator of nuclear factor kappa-B ligand (RANKL)-induced osteoclastogenesis in a dose-dependent manner without cytotoxicity. In addition, BCPA attenuated the reduction of Pin1 protein during osteoclast differentiation without changing Pin1 mRNA levels. BCPA repressed the expression of osteoclast-related genes, such as DC-STAMP and osteoclast-associated receptor (OSCAR), without altering the mRNA expression of nuclear factor of activated T cells (NFATc1) and cellular oncogene fos (c-Fos). Furthermore, Tartrate-resistant acid phosphatase (TRAP)-positive mononuclear cells were significantly decreased by BCPA treatment compared to treatment with the Pin1 inhibitor juglone. These data suggest that BCPA can inhibit osteoclastogenesis by regulating the expression of the DC-STAMP osteoclast fusion protein by attenuating Pin1 reduction. Therefore, BCPA may be used to treat osteoporosis.
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Dose-dependent synergistic and antagonistic mutation responses of binary mixtures of the environmental carcinogen benzo[a]pyrene with food-derived carcinogens. Arch Toxicol 2018; 92:3459-3469. [DOI: 10.1007/s00204-018-2319-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 09/19/2018] [Indexed: 12/08/2022]
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Evaluation of mutagenicity of acrylamide using RBC Pig-a and PIGRET assays by single peroral dose in rats. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2016; 811:54-59. [DOI: 10.1016/j.mrgentox.2015.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 12/16/2015] [Indexed: 11/22/2022]
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Etter S, Birrell L, Cahill P, Scott H, Billinton N, Walmsley RM, Smith B. The ‘BlueScreen HC’ assay as a decision making test in the genotoxicity assessment of flavour and fragrance materials. Toxicol In Vitro 2015; 29:1425-35. [DOI: 10.1016/j.tiv.2015.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 05/01/2015] [Accepted: 05/03/2015] [Indexed: 11/28/2022]
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Xin L, Lin Y, Wang A, Zhu W, Liang Y, Su X, Hong C, Wan J, Wang Y, Tian H. Cytogenetic evaluation for the genotoxicity of bisphenol-A in Chinese hamster ovary cells. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 40:524-529. [PMID: 26318564 DOI: 10.1016/j.etap.2015.08.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 08/04/2015] [Accepted: 08/05/2015] [Indexed: 06/04/2023]
Abstract
Bisphenol A (BPA), identified as an endocrine disruptor, is an important man-made compound used in a wide range of consumer products. The MTT assay, comet assay, micronucleus test, chromosome aberration test, and Ames assay were conducted to assess the cytotoxic, genotoxic, cytogenetic effects, and mutagenic activity of BPA. After BPA exposure, we showed significant increases in cytotoxicity and level of DNA damage indicated by Olive tail moment, tail length, and % tail DNA in a similar dose- and time-dependent manner. Significant increases in micronucleus frequency and conventional chromosome aberrations were also observed after BPA treatment. The major types of structural aberrations were breaks, gaps, and fragments. However, no positive mutagenic activity of BPA was observed in any of the tester strains. Taken together, the data obtained in this study clearly demonstrated that BPA is not mutagenic but could exhibit significant genotoxic and cytogenetic effects in Chinese hamster ovary cells.
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Affiliation(s)
- Lili Xin
- School of Public Health, Medical College of Soochow University, 199 Renai Road, Suzhou 215123, Jiangsu, China; Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health, Soochow University, Suzhou 215123, China
| | - Yao Lin
- Experimental Center of Medical College, Soochow University, 199 Renai Road, Suzhou 215123, Jiangsu, China
| | - Aiqing Wang
- Experimental Center of Medical College, Soochow University, 199 Renai Road, Suzhou 215123, Jiangsu, China
| | - Wei Zhu
- School of Radiation Medicine and Protection, Medical College of Soochow University, 199 Renai Road, Suzhou 215123, Jiangsu, China
| | - Yu Liang
- Sanitation & Environment Technology Institute, Soochow University, 199 Renai Road, Suzhou 215123, Jiangsu, China
| | - Xiaojun Su
- Sanitation & Environment Technology Institute, Soochow University, 199 Renai Road, Suzhou 215123, Jiangsu, China
| | - Chengjiao Hong
- Experimental Center of Medical College, Soochow University, 199 Renai Road, Suzhou 215123, Jiangsu, China
| | - Jianmei Wan
- Experimental Center of Medical College, Soochow University, 199 Renai Road, Suzhou 215123, Jiangsu, China
| | - Yarong Wang
- Experimental Center of Medical College, Soochow University, 199 Renai Road, Suzhou 215123, Jiangsu, China
| | - Hailin Tian
- School of Public Health, Medical College of Soochow University, 199 Renai Road, Suzhou 215123, Jiangsu, China; Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health, Soochow University, Suzhou 215123, China.
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Abstract
Considerable support exists for the roles of metabolism in modulating the carcinogenic properties of chemicals. In particular, many of these compounds are pro-carcinogens that require activation to electrophilic forms to exert genotoxic effects. We systematically analyzed the existing literature on the metabolism of carcinogens by human enzymes, which has been developed largely in the past 25 years. The metabolism and especially bioactivation of carcinogens are dominated by cytochrome P450 enzymes (66% of bioactivations). Within this group, six P450s--1A1, 1A2, 1B1, 2A6, 2E1, and 3A4--accounted for 77% of the P450 activation reactions. The roles of these P450s can be compared with those estimated for drug metabolism and should be considered in issues involving enzyme induction, chemoprevention, molecular epidemiology, interindividual variations, and risk assessment.
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Ao L, Cao J. Genotoxicity of Acrylamide and Glycidamide: A Review of the Studies by HPRT Gene and TK Gene Mutation Assays. Genes Environ 2012. [DOI: 10.3123/jemsge.34.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Acrylamide up-regulates cyclooxygenase-2 expression through the MEK/ERK signaling pathway in mouse epidermal cells. Food Chem Toxicol 2011; 49:1249-54. [DOI: 10.1016/j.fct.2011.03.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Revised: 02/24/2011] [Accepted: 03/02/2011] [Indexed: 11/17/2022]
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