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Lang C, Tang J, Zhang G, Meng Y, Au WW, Xia ZL, Wang T. Comparison of sensitivity between blood parameters and a genotoxic biomarker at low blood Pb levels: A population-based study. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 283:116796. [PMID: 39094451 DOI: 10.1016/j.ecoenv.2024.116796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 07/22/2024] [Accepted: 07/24/2024] [Indexed: 08/04/2024]
Abstract
BACKGROUND Previous studies reported that lead (Pb) exposure induced adverse health effects at high exposure concentrations, however, there have been limited data on sensitivity comparisons among different health outcomes at low blood Pb levels. OBJECTIVES To compare sensitivity between blood parameters and a genotoxic biomarker among workers exposed to low blood Pb levels (< 20 µg/dl), and to estimate a benchmark dose (BMD). METHODS Pb-exposed workers were recruited from a lead-acid storage battery plant. Their blood lead levels (BLLs) were measured. Blood parameters and micronuclei (MN) frequencies were determined. Multivariate linear or Poisson regression was used to analyze relationships between blood parameters or MN frequencies with BLLs. Two BMD software were used to calculate BMD and its 95 % lower confidence limit (BMDL) for BLLs. RESULTS The median BLL for 611 workers was 10.44 µg/dl with the 25th and 75th percentile being 7.37 and 14.62 µg/dl among all participants. There were significantly negative correlations between blood parameters and BLLs. However, MN frequencies correlated positively with BLLs (all P<0.05). Results from the two BMD software revealed that the dichotomous model was superior to the continuous model, and the BMDL for BLL derived from red blood cell (RBC) was 15.11 µg/dl, from hemoglobin (HGB) was 8.50 µg/dl, from mean corpuscular hemoglobin (MCH) was 7.87 µg/dl, from mean corpuscular hemoglobin concentration (MCHC) was 3.98 µg/dl, from mean corpuscular volume (MCV) was 11.44 µg/dl, and from hematocrit (HCT) was 6.65 µg/dl. The conservative BMDL obtained from the MN data was 7.52 µg/dl. CONCLUSION Our study shows that low dose Pb exposure caused decrease of blood parameters and increase of MN frequencies. The genotoxic biomarker was more sensitive than most blood parameters. BMDLs for BLL derived from MN frequencies and the red blood cell indicators should be considered as new occupational exposure limits. Our results suggest that MN assay can be considered as a part of occupational health examination items.
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Affiliation(s)
- Chunyan Lang
- Department of Occupational and Environmental Health, School of Public Health, Shandong Second Medical University, Weifang, Shandong Province, China
| | - Jiachun Tang
- Department of Occupational and Environmental Health, School of Public Health, Shandong Second Medical University, Weifang, Shandong Province, China
| | - Guanghui Zhang
- Department of Environmental Health, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Yu Meng
- Department of Occupational Health and Toxicology, School of Public Health, Shanghai Medical College of Fudan University, Shanghai 200032, China
| | - William W Au
- University of Medicine, Pharmacy, Science and Technology, Targu Mures, Romania and University of Texas Medical Branch, TX, USA
| | - Zhao-Lin Xia
- Department of Occupational Health and Toxicology, School of Public Health, Shanghai Medical College of Fudan University and School of Public Health, Xinjiang Medical University, Urumqi 830011, China
| | - Tuanwei Wang
- Department of Occupational and Environmental Health, School of Public Health, Shandong Second Medical University, Weifang, Shandong Province, China.
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Amadio F, Bongiorni S, Varalda GM, Marcon F, Meschini R. Di(2-ethylexyl) phthalate and chromosomal damage: Insight on aneugenicity from the cytochalasin-block micronucleus assay. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2024; 898:503791. [PMID: 39147443 DOI: 10.1016/j.mrgentox.2024.503791] [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: 04/19/2024] [Revised: 05/30/2024] [Accepted: 06/24/2024] [Indexed: 08/17/2024]
Abstract
Bis(2-ethylhexyl) phthalate is the most abundant phthalate used as plasticizer to soften plastics and polymers included in medical devices. Human and environmental exposure may occur because DEHP is not chemically bound to plastics and can easily leach out of the materials. This phthalate is classified as reproductive toxicant and possible carcinogen to humans. The genotoxic potential has still to be clarified, but there are indications suggesting that DEHP may have aneugenic effects. To further investigate DEHP genotoxicity, the cytochalasin-block micronucleus assay was applied and combined with the CREST staining to characterise micronucleus content and gain insights on its genotoxic mode of action. Chromosomal damage was also analysed in metaphase and ana-telophase cells and the morphology of the mitotic spindle was investigated to evaluate the possible involvement of this cellular apparatus as a target of DEHP. Our findings indicated that DEHP induced a statistically significant increase in the frequency of micronuclei as well as in the frequency of CREST-positive micronuclei. Consistently, disturbance of chromosome segregation and induction of numerical chromosome changes were observed together with changes in spindle morphology, formation of multipolar spindles and alteration of the microtubule network. Experiments performed without metabolic activation demonstrated a direct action of DEHP on chromosome segregation not mediated by its metabolites. In conclusion, there is consistent evidence for an aneugenic activity of DEHP. A thresholded genotoxic activity was identified for DEHP, disclosing possible implications for risk assessment.
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Affiliation(s)
- Francesco Amadio
- Department of Ecological and Biological Sciences, Tuscia University, Viterbo, Italy
| | - Silvia Bongiorni
- Department of Ecological and Biological Sciences, Tuscia University, Viterbo, Italy
| | - Giorgia Maria Varalda
- Department of Ecological and Biological Sciences, Tuscia University, Viterbo, Italy; Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy
| | - Francesca Marcon
- Department of Environment and Health, Istituto Superiore di Sanità, Rome, Italy.
| | - Roberta Meschini
- Department of Ecological and Biological Sciences, Tuscia University, Viterbo, Italy.
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Rajković KM, Stanković M, Markićević M, Zavišić G, Vranješ-Đurić S, Janković D, Obradović Z, Stanković D. Chemical Composition and Protective Possibilities of Juglans Nigra Leaves and Green Husks Extracts: DNA Binding and Micronucleus Assay in Human Lymphocytes. PLANTS (BASEL, SWITZERLAND) 2024; 13:1669. [PMID: 38931101 PMCID: PMC11207762 DOI: 10.3390/plants13121669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/11/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024]
Abstract
To better understand the mechanism of action of the compounds in the ethanolic extracts of J. nigra leaves and green husks, their binding to CT-DNA was investigated. This study was conducted to elucidate the in vitro protective effect of extracts against chromosomal damage in mitogen-induced human lymphocytes and investigate the possible application of selec+ted extracts as a natural source of polyphenolic compounds. Using HPLC-MS analysis, 103 different compounds were identified as having a higher number of active species, which is consistent with their activity. The frequency of micronuclei (MN) was scored in binucleated cells, and the nuclear proliferation index was calculated. Cyclic voltammetry experiments demonstrate that the nature of the interaction between extracts and CT-DNA is a synergy of electrostatic and intercalative modes, where leaves extracts showed a higher ability to bind to DNA. Extracts showed excellent antioxidant activity. At a concentration of only 4 µg/mL, extract of J. nigra leaves and the green husks reduced the incidence of MN by 58.2% and 64.5%, respectively, compared to control cell cultures.
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Affiliation(s)
- Katarina M. Rajković
- The Academy of Applied Preschool Teaching and Health Studies, Kosančićeva 36, 37000 Kruševac, Serbia;
| | - Miroslava Stanković
- Nuclear Facilities of Serbia, Mike Petrovića Alasa 12-14, Vinča, 11001 Belgrade, Serbia
| | - Milan Markićević
- Institute for Oncology and Radiology of Serbia (IORS), Department of Radiotherapy Physics, Pasterova 14, 11000 Belgrade, Serbia
| | - Gordana Zavišić
- Faculty of Pharmacy, University Business Academy Novi Sad, Trg mladenaca 5, 21101 Novi Sad, Serbia;
| | - Sanja Vranješ-Đurić
- “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Serbia, POB 522, 11001 Belgrade, Serbia (Z.O.)
| | - Drina Janković
- “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Serbia, POB 522, 11001 Belgrade, Serbia (Z.O.)
| | - Zorica Obradović
- “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Serbia, POB 522, 11001 Belgrade, Serbia (Z.O.)
| | - Dalibor Stanković
- “Vinča” Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Serbia, POB 522, 11001 Belgrade, Serbia (Z.O.)
- Faculty of Chemistry, University of Belgrade, Studentski Trg 12-16, 11000 Belgrade, Serbia
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Wang F, Ye L, Jiang X, Zhang R, Chen S, Chen L, Yu H, Zeng X, Li D, Xing X, Xiao Y, Chen W. Specific CpG sites methylation is associated with hematotoxicity in low-dose benzene-exposed workers. ENVIRONMENT INTERNATIONAL 2024; 186:108645. [PMID: 38615541 DOI: 10.1016/j.envint.2024.108645] [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: 01/14/2024] [Revised: 03/10/2024] [Accepted: 04/08/2024] [Indexed: 04/16/2024]
Abstract
Benzene is a broadly used industrial chemicals which causes various hematologic abnormalities in human. Altered DNA methylation has been proposed as epigenetic biomarkers in health risk evaluation of benzene exposure, yet the role of methylation at specific CpG sites in predicting hematological effects remains unclear. In this study, we recruited 120 low-level benzene-exposed and 101 control male workers from a petrochemical factory in Maoming City, Guangdong Province, China. Urinary S-phenylmercapturic acid (SPMA) in benzene-exposed workers was 3.40-fold higher than that in control workers (P < 0.001). Benzene-induced hematotoxicity was characterized by reduced white blood cells counts and nuclear division index (NDI), along with an increased DNA damage and urinary 8-hydroxy-2'-deoxyguanosine (all P < 0.05). Methylation levels of TRIM36, MGMT and RASSF1a genes in peripheral blood lymphocytes (PBLCs) were quantified by pyrosequencing. CpG site 6 of TRIM36, CpG site 2, 4, 6 of RASSF1a and CpG site 1, 3 of MGMT methylation were recognized as hot CpG sites due to a strong correlation with both internal exposure and hematological effects. Notably, integrating hot CpG sites methylation of multiple genes reveal a higher efficiency in prediction of integrative damage compared to individual genes at hot CpG sites. The negative dose-response relationship between the combined methylation of hot CpG sites in three genes and integrative damage enabled the classification of benzene-exposed individuals into high-risk or low-risk groups using the median cut-off value of the integrative index. Subsequently, a prediction model for integrative damage in benzene-exposed populations was built based on the methylation status of the identified hot CpG sites in the three genes. Taken together, these findings provide a novel insight into application prospect of specific CpG site methylation as epi-biomarkers for health risk assessment of environmental pollutants.
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Affiliation(s)
- Feier Wang
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Lizhu Ye
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China; Boji Drug Evaluation Center, Boji Medical Technology Co., Ltd, Guangzhou, China
| | - Xinhang Jiang
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Rui Zhang
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Shen Chen
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Liping Chen
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Hongyao Yu
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xiaowen Zeng
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Daochuan Li
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xiumei Xing
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yongmei Xiao
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
| | - Wen Chen
- Department of Toxicology, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
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Pham ND, Tran TM, Anderson D, Che QT, Pham HTK. Baseline micronucleus frequencies and 60Co cytokinesis-block micronucleus assay dose-response curve for biodosimetry in Vietnam. RADIATION PROTECTION DOSIMETRY 2024; 200:221-228. [PMID: 37807769 DOI: 10.1093/rpd/ncad266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 08/23/2023] [Accepted: 09/16/2023] [Indexed: 10/10/2023]
Abstract
This study aims to establish baseline micronucleus (MN) frequencies from various populations of residents in Vietnam and develop a 60Co dose-response curve for the cytokinesis-block micronucleus (CBMN) assay. Blood samples were exposed in vitro to a 60Co source at a dose rate of 275 mGy per min in a range of 0.1 to 4.0 Gy. MN background frequencies were 4.5 ± 3.2, 7.3 ± 4.6, 7.0 ± 3.8 and 13.1 ± 6.7 in 1000 binucleated (BN) cells for 96 healthy donors, 22 male radiation workers and 12 breast cancer patients, respectively. Blood samples from three healthy donors were used to generate the MN dose-response curve: y = C + (0.0496 ± 0.0069)D + (0.0143 ± 0.0026)D2. This curve was verified through an inter-laboratory comparison (RENEB ILC 2021). Our findings highlight the significance of the CBMN assay as an additional essential tool for biodosimetry in Vietnam.
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Affiliation(s)
- Ngoc Duy Pham
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
| | - Thanh Mai Tran
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
| | - Donovan Anderson
- Institute of Radiation Emergency Medicine, Hirosaki University, 66-1, Hon-cho, Hirosaki-shi, Aomori 036-8564, Japan
| | - Quang Tuan Che
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
| | - Ho Thuat Khoa Pham
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
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Kameri A, Dragidella A, Haziri A, Hashani Z, Kurteshi K, Kurti A. Antifungal and genotoxic effects of Thymus serpyllum as a root canal irrigant. Clin Exp Dent Res 2024; 10:e837. [PMID: 38345516 PMCID: PMC10847709 DOI: 10.1002/cre2.837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 11/13/2023] [Accepted: 12/21/2023] [Indexed: 02/15/2024] Open
Abstract
OBJECTIVES The aim of this study was the assessment of the efficiency of the ethyl acetate (EthOAc) extract of Thymus serpyllum against Candida albicans and to compare it with sodium hypochlorite (NaOCl) and chlorhexidine (CHX), as well as their genotoxic effect. MATERIAL AND METHODS The antifungal effectiveness of the EthOAc extract of Thymus serpyllum was determined using the agar disk diffusion method. The inhibition zones induced by the EthOAc extract were compared after 5 min, 60 min, and 24 h to those induced by standard solutions (2% CHX and 2% NaOCl). An in vitro genotoxicity assay was performed in cultured lymphocytes from the blood of human volunteers to observe micronuclei formation. Statistical analysis of the results was performed using the Kruskal-Wallis test and one-way analysis of variance. RESULTS The inhibition zone of combination of CHX with EthOAc extract of Thymus serpyllum against C. albicans was 29.7 mm after 5 min, 28.3 mm after 60 min, and 29 mm after 24 h. The inhibition zone of NaOCl in combination with EthOAc extract of Thymus serpyllum against C. albicans was 0 mm. The EthOAc extract of Thymus serpyllum did not show a genotoxic effect on lymphocyte cells. CONCLUSIONS The EthOAc extract of Thymus serpyllum in combination with CHX may be a useful root canal disinfection in endodontic therapy.
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Affiliation(s)
- Ariana Kameri
- Department of Dental Pathology and Endodontics, Faculty of MedicineUniversity of Prishtina “Hasan Prishtina”PrishtinaKosova
| | - Agime Dragidella
- Department of Dental Pathology and Endodontics, Faculty of MedicineUniversity of Prishtina “Hasan Prishtina”PrishtinaKosova
| | - Arben Haziri
- Department of Chemistry, Natural Science FacultyUniversity of Prishtina “Hasan Prishtina”PrishtinaKosova
| | - Zeqir Hashani
- Faculty of EducationUniversity “Fehmi Agani”GjakoveKosova
| | - Kemajl Kurteshi
- Department of Biology, Natural Science FacultyUniversity of Prishtina “Hasan Prishtina”PrishtinaKosova
| | - Arsim Kurti
- Department of Microbiology, Medical FacultyUniversity of Prishtina “Hasan Prishtina”PrishtinaKosova
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Yadav V, Fuentes JL, Krishnan A, Singh N, Vohora D. Guidance for the use and interpretation of assays for monitoring anti-genotoxicity. Life Sci 2024; 337:122341. [PMID: 38101613 DOI: 10.1016/j.lfs.2023.122341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
Since DNA damage can occur spontaneously or be produced by the environmental genotoxins in living cells, it is important to investigate compounds that can reverse or protect DNA damage. An appropriate methodology is essential for the responsive identification of protection offered against DNA damage. This review includes information on the current state of knowledge on prokaryotic cell-based assays (SOS chromotest, umu test, vitotox assay) and cytogenetic techniques (micronucleus assay, chromosome aberration test and sister chromatid exchange assay) with an emphasis on the possibility to explore genoprotective compounds. Throughout the last decade, studies have extrapolated the scientific methodologies utilized for genotoxicity to assess genoprotective compounds. Therefore, shortcomings of genotoxicity studies are also mirrored in antigenotoxicity studies. While regulatory authorities around the world (OECD, US-EPA and ICH) continue to update diverse genotoxic assay strategies, there are still no clear guidelines/approaches for efficient experimental design to screen genoprotective compounds. As a consequence, non-synergetic and inconsistent implementation of the test method by the researchers to execute such simulations has been adopted, which inevitably results in unreliable findings. The review has made the first attempt to collect various facets of experimentally verified approaches for evaluating genoprotective compounds, as well as to acknowledge potential significance and constraints, and further focus on the assessment of end points which are required to validate such action. Henceforth, the review makes an incredible commitment by permitting readers to equate several components of their test arrangement with the provided simplified information, allowing the selection of convenient technique for the predefined compound from a central repository.
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Affiliation(s)
- Vaishali Yadav
- Neurobehavioral Pharmacology Laboratory, Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Jorge L Fuentes
- School of Biology, Science Faculty, Industrial University of Santander, Bucaramanga 680002, Santander, Colombia
| | - Anuja Krishnan
- Department of Molecular Medicine, School of Interdisciplinary Science and Technology, Jamia Hamdard, New Delhi 110062, India
| | - Neenu Singh
- Leicester School of Allied Health Sciences, Faculty of Health & Life Sciences, De Montfort University, The Gateway, Leicester LE1 9BH, UK
| | - Divya Vohora
- Neurobehavioral Pharmacology Laboratory, Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India.
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Souza DVD, Takeshita WM, Castro GMD, Renno ACM, Santos JND, Ribeiro DA. The use of micronucleus assay in exfoliated oral cells in patients undergoing fixed orthodontic therapy: a systematic review with meta-analysis. Braz Oral Res 2023; 37:e116. [PMID: 37970936 DOI: 10.1590/1807-3107bor-2023.vol37.0116] [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: 02/21/2022] [Accepted: 06/15/2023] [Indexed: 11/19/2023] Open
Abstract
The aim of this systematic review was to evaluate published papers regarding the micronucleus assay in oral mucosal cells of patients undergoing orthodontic therapy (OT). A search of the scientific literature was made in the PubMed, Scopus, and Web of Science databases for all data published until November, 2021 using the combination of the following keywords: "fixed orthodontic therapy," "genetic damage", "DNA damage," "genotoxicity", "mutagenicity", "buccal cells", "oral mucosa cells," and "micronucleus assay". The systematic review was designed according to the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines. Nine studies were retrieved. Some authors demonstrated that OT induces cytogenetic damage in oral mucosal cells. Out of the nine studies included, two were classified as strong, five as moderate, and two as weak, according to the quality assessment components of the Effective Public Health Practice Project (EPHPP). Meta-analysis data revealed no relationship between mutagenicity in oral cells and OT in different months of treatment. At one month, the SMD = 0.65 and p = 0.08; after three months of OT, the SMD = 1.21 and p = 0.07; and after six months of OT, the SMD = 0.56 and p = 0.11. In the analyzed months of OT, I2 values were >75%, indicating high heterogeneity. In summary, this review was not able to demonstrate that OT induces genetic damage in oral cells. The study is important for the protection of patients undergoing fixed OT, given that mutagenesis participates in the multi-step process of carcinogenesis.
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Affiliation(s)
- Daniel Vitor de Souza
- Universidade Federal de São Paulo - Unifesp, Institute of Health and Society, Department of Biosciences, Santos, SP, Brazil
| | | | - Glaucia Monteiro de Castro
- Universidade Federal de São Paulo - Unifesp, Institute of Health and Society, Department of Biosciences, Santos, SP, Brazil
| | - Ana Claudia Muniz Renno
- Universidade Federal de São Paulo - Unifesp, Institute of Health and Society, Department of Biosciences, Santos, SP, Brazil
| | - Jean Nunes Dos Santos
- Universidade Federal da Bahia - UFBA, School of Dentistry, Department of Oral Diagnosis and Therapeutics, Salvador, BA, Brazil
| | - Daniel Araki Ribeiro
- Universidade Federal de São Paulo - Unifesp, Institute of Health and Society, Department of Biosciences, Santos, SP, Brazil
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Nassar WM, El-Kholy WM, El-Sawi MR, El-Shafai NM, Alotaibi BS, Ghamry HI, Shukry M. Ameliorative Effect of Thymoquinone and Thymoquinone Nanoparticles against Diazinon-Induced Hepatic Injury in Rats: A Possible Protection Mechanism. TOXICS 2023; 11:783. [PMID: 37755793 PMCID: PMC10536923 DOI: 10.3390/toxics11090783] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/30/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023]
Abstract
The health benefits of thymoquinone (TQ) have been a significant focus of numerous studies. However, more research is needed to ascertain whether its nano-form can effectively treat or prevent chronic diseases. In this study, we investigated how thymoquinone and its nanoparticles can mitigate liver damage induced by diazinon in male Wistar rats and explored the intracellular mechanisms involved. Forty-two Wistar male rats (n = 42) were randomly allotted into seven groups. Group 1 served as the control. Group 2 (vehicle) consisted of rats that received corn oil via a gastric tube daily. In Group 3 (TQ), rats were given a daily oral administration of TQ (40 mg/kg bw). Group 4 (thymoquinone nanoparticles, NTQ) included rats that received NTQ (0.5 mg/kg bw) orally for 21 days. Group 5 (DZN) involved rats that were administered diazinon (DZN, 15 mg/kg bw) orally. In Group 6 (TQ + DZN), rats first received TQ orally, followed by DZN. Group 7 (NTQ + DZN) consisted of rats receiving NTQ orally, then DZN. After 21 days of treatment, the rats were euthanized. After oral administration of DZN, liver enzymes were significantly elevated (p < 0.05). Additionally, there were noticeable increases in oxidative injury markers, such as nitric oxide, malondialdehyde, redox oxygen radicals, and overall increases in hydrogen peroxide and liver protein carbonyl concentrations. This was accompanied by the upregulation of apoptotic markers (Bax, caspase9, caspase 3, bax/Bcl2 ratio), inflammatory cytokines (TNF-α, IL-6), and DNA damage. There was also a noteworthy decrease (p < 0.05) in the activities of antioxidant enzymes and anti-apoptotic markers. However, the oral administration of thymoquinone or its nanoparticle form mitigated these diazinon complications; our histopathological findings corroborated our biochemical and molecular observations. In conclusion, the significant antioxidant properties of thymoquinone, or its nanoparticle form, in tandem with the downregulation of apoptotic markers and inflammatory cytokines, provided a protective effect against hepatic dysfunction caused by diazinon.
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Affiliation(s)
- Walaa M. Nassar
- Physiology Division, Zoology Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Wafaa M. El-Kholy
- Physiology Division, Zoology Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Mamdouh R. El-Sawi
- Physiology Division, Zoology Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Nagi M. El-Shafai
- Nanotechnology Center, Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Badriyah S. Alotaibi
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Heba I. Ghamry
- Nutrition and Food Sciences, Department of Home Economics, Faculty of Home Economics, King Khalid University, P.O. Box 960, Abha 61421, Saudi Arabia
| | - Mustafa Shukry
- Physiology Department, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
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de Almada Vilhena AO, Lima KMM, de Azevedo LFC, Rissino JD, de Souza ACP, Nagamachi CY, Pieczarka JC. The synthetic dye malachite green found in food induces cytotoxicity and genotoxicity in four different mammalian cell lines from distinct tissuesw. Toxicol Res (Camb) 2023; 12:693-701. [PMID: 37663817 PMCID: PMC10470350 DOI: 10.1093/toxres/tfad059] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 04/13/2023] [Accepted: 06/02/2023] [Indexed: 09/05/2023] Open
Abstract
Malachite green (MG) is a synthetic dye that uses ranges from its application as a tissue dye to that as an antiparasitic in aquaculture. Several studies have reported the presence of this compound in food dyes and in the meat of fish raised in captivity for human consumption, suggesting risks both for the end user and for as those who handle these products because of MG toxic properties described in the literature. Here we evaluated the cytotoxic and genotoxic profiles of MG in four different cell lines (ACP02, L929, MNP01, and MRC-5). Two of these cell lines are stomach cells (normal and cancer lineages) and the potential ingestion of MG makes this a relevant cell type. Cells were treated with MG at concentrations ranging from 0.1 μM to 100 μM, and tested by MTT assay, a differential apoptosis/necrosis assay (EB/OA), the micronucleus test (MN), and the comet assay. MG exhibits dose-dependent cytotoxicity toward all of the tested cell types; higher concentrations of MG cause cell necrosis, while lower concentrations induce apoptosis. MG has a genotoxic profile increasing the rates of micronuclei, nucleoplasmic bridges, nuclear buds, and DNA fragmentation; L929 and MRC-5 showed more sensibility than ACP02 and MNP01.
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Affiliation(s)
- Andryo O de Almada Vilhena
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Cultura de Células, Instituto de Ciências Biológicas, Universidade Federal do Pará/Parque de Ciência e Tecnologia do Guamá, Avenida Perimetral da Ciência Km 01 – Guamá, Belém CEP 66075-750, PA, Brazil
- Instituto Tocantinense Presidente Antônio Carlos (ITPAC/Afya), Abaetetuba, PA, Brazil
| | - Karina M M Lima
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Cultura de Células, Instituto de Ciências Biológicas, Universidade Federal do Pará/Parque de Ciência e Tecnologia do Guamá, Avenida Perimetral da Ciência Km 01 – Guamá, Belém CEP 66075-750, PA, Brazil
- Campus Tomé Açu, Universidade Federal Rural da Amazônia, Tomé Açu, PA, Brazil
| | - Luana F C de Azevedo
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Cultura de Células, Instituto de Ciências Biológicas, Universidade Federal do Pará/Parque de Ciência e Tecnologia do Guamá, Avenida Perimetral da Ciência Km 01 – Guamá, Belém CEP 66075-750, PA, Brazil
| | - Jorge D Rissino
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Cultura de Células, Instituto de Ciências Biológicas, Universidade Federal do Pará/Parque de Ciência e Tecnologia do Guamá, Avenida Perimetral da Ciência Km 01 – Guamá, Belém CEP 66075-750, PA, Brazil
| | - Augusto C P de Souza
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Cultura de Células, Instituto de Ciências Biológicas, Universidade Federal do Pará/Parque de Ciência e Tecnologia do Guamá, Avenida Perimetral da Ciência Km 01 – Guamá, Belém CEP 66075-750, PA, Brazil
- Laboratório de Estudos da Ictiofauna da Amazônia, Campus Abaetetuba, Instituto Federal do Pará, Abaetetuba, PA, Brazil
| | - Cleusa Y Nagamachi
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Cultura de Células, Instituto de Ciências Biológicas, Universidade Federal do Pará/Parque de Ciência e Tecnologia do Guamá, Avenida Perimetral da Ciência Km 01 – Guamá, Belém CEP 66075-750, PA, Brazil
| | - Julio C Pieczarka
- Centro de Estudos Avançados da Biodiversidade, Laboratório de Cultura de Células, Instituto de Ciências Biológicas, Universidade Federal do Pará/Parque de Ciência e Tecnologia do Guamá, Avenida Perimetral da Ciência Km 01 – Guamá, Belém CEP 66075-750, PA, Brazil
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11
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Karzi V, Ozcagli E, Tzatzarakis MN, Vakonaki E, Fragkiadoulaki I, Kalliantasi A, Chalkiadaki C, Alegakis A, Stivaktakis P, Karzi A, Makrigiannakis A, Docea AO, Calina D, Tsatsakis A. DNA Damage Estimation after Chronic and Combined Exposure to Endocrine Disruptors: An In Vivo Real-Life Risk Simulation Approach. Int J Mol Sci 2023; 24:9989. [PMID: 37373136 DOI: 10.3390/ijms24129989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Exposure to chemical substances has always been a matter of concern for the scientific community. During the last few years, researchers have been focusing on studying the effects resulting from combined exposure to different substances. In this study, we aimed to determine the DNA damage caused after chronic and combined exposure to substances characterized as endocrine disruptors using comet and micronuclei assays, specifically glyphosate (pure and commercial form), bisphenol A, parabens (methyl-, propyl- and butylparaben), triclosan and bis (2-ethylhexyl) phthalate. The highest mean tail intensity was observed in the group exposed to a high-dose (10 × ADI) mixture of substances (Group 3), with a mean value of 11.97 (11.26-13.90), while statistically significant differences were noticed between the groups exposed to low-dose (1 × ADI) (Group 2) and high-dose (10 × ADI) (Group 3) mixtures of substances (p = 0.003), and between Group 3 and both groups exposed to high doses (10 × ADI) of the pure and commercial forms of glyphosate (Groups 4 (p = 0.014) and 5 (p = 0.007)). The micronuclei assay results were moderately correlated with the exposure period. Group 5 was the most impacted exposure group at all sampling times, with mean MN counts ranging between 28.75 ± 1.71 and 60.75 ± 1.71, followed by Group 3 (18.25 ± 1.50-45.75 ± 1.71), showing that commercial forms of glyphosate additives as well as mixtures of endocrine disruptors can enhance MN formation. All exposure groups showed statistically significant differences in micronuclei counts with an increasing time trend.
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Affiliation(s)
- Vasiliki Karzi
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | - Eren Ozcagli
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, Beyazıt, Istanbul 34116, Turkey
| | - Manolis N Tzatzarakis
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | - Elena Vakonaki
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | - Irene Fragkiadoulaki
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | | | - Christina Chalkiadaki
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | - Athanasios Alegakis
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | | | - Aikaterini Karzi
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | - Antonios Makrigiannakis
- Department of Obstetrics and Gynecology, University Hospital of Heraklion, 71500 Heraklion, Greece
| | - Anca Oana Docea
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Daniela Calina
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Aristidis Tsatsakis
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
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12
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Vijayalakshmi J, Chaurasia RK, Srinivas KS, Vijayalakshmi K, Paul SF, Bhat N, Sapra B. Establishment of ex vivo calibration curve for X-ray induced "dicentric + ring" and micronuclei in human peripheral lymphocytes for biodosimetry during radiological emergencies, and validation with dose blinded samples. Heliyon 2023; 9:e17068. [PMID: 37484390 PMCID: PMC10361230 DOI: 10.1016/j.heliyon.2023.e17068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/31/2023] [Accepted: 06/06/2023] [Indexed: 07/25/2023] Open
Abstract
In the modern developing society, application of radiation has increased extensively. With significant improvement in the radiation protection practices, exposure to human could be minimized substantially, but cannot be avoided completely. Assessment of exposure is essential for regulatory decision and medical management as applicable. Until now, cytogenetic changes have served as surrogate marker of radiation exposure and have been extensively employed for biological dose estimation of various planned and unplanned exposures. Dicentric Chromosomal Aberration (DCA) is radiation specific and is considered as gold standard, micronucleus is not very specific to radiation and is considered as an alternative method for biodosimetry. In this study dose response curves were generated for X-ray induced "dicentric + ring" and micronuclei, in lymphocytes of three healthy volunteers [2 females (age 22, 23 years) and 1 male (24 year)]. The blood samples were irradiated with X-ray using LINAC (energy 6 MV, dose rate 6 Gy/min), in the dose range of 0-5Gy. Irradiated blood samples were cultured and processed to harvest metaphases, as per standard procedures recommended by International Atomic Energy Agency. Pooled data obtained from all the three volunteers, were in agreement with Poisson distribution for "dicentric + ring", however over dispersion was observed for micronuclei. Data ("dicentric + ring" and micronuclei) were fitted by linear quadratic model of the expression Y[bond, double bond]C + αD + βD2 using Dose Estimate software, version 5.2. The data fit has resulted in linear coefficient α = 0.0006 (±0.0068) "dicentric + ring" cell-1 Gy-1 and quadratic coefficient β = 0.0619 (±0.0043) "dicentric + ring" cell-1 Gy-2 for "dicentric + ring" and linear coefficient α = 0.0459 ± (0.0038) micronuclei cell-1 Gy-1 and quadratic coefficient β = 0.0185 ± (0.0010) micronuclei cell-1 Gy-2 for micronuclei, respectively. Background frequencies for "dicentric + ring" and micronuclei were 0.0006 ± 0.0004 and 0.0077 ± 0.0012 cell-1, respectively. Established curves were validated, by reconstructing the doses of 8 dose blinded samples (4 by DCA and 4 by CBMN) using coefficients generated here. Estimated doses were within the variation of 0.9-16% for "dicentric + ring" and 21.7-31.2% for micronuclei respectively. These established curves have potential to be employed for biodosimetry of occupational, clinical and accidental exposures, for initial triage and medical management.
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Affiliation(s)
- J. Vijayalakshmi
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (DU), Chennai, India
| | - Rajesh Kumar Chaurasia
- Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai, India
- Homi Bhabha National Institute (HBNI), Mumbai, India
| | - K. Satish Srinivas
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (DU), Chennai, India
| | - K. Vijayalakshmi
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (DU), Chennai, India
| | - Solomon F.D. Paul
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (DU), Chennai, India
| | - N.N. Bhat
- Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai, India
- Homi Bhabha National Institute (HBNI), Mumbai, India
| | - B.K. Sapra
- Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai, India
- Homi Bhabha National Institute (HBNI), Mumbai, India
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13
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Habelt B, Dörr W. Relative biological effectiveness of low-energy X-rays (25 kV) in mutant p53 cancer cells. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2023; 62:161-170. [PMID: 36609923 PMCID: PMC9950242 DOI: 10.1007/s00411-022-01014-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 12/25/2022] [Indexed: 06/17/2023]
Abstract
Low-energy X-rays as used in radiation therapy and diagnostics such as mammography are associated with a certain risk of promoting tumour development, especially in patients with mutations in cancer-related genes like TP53. The present study therefore addressed the relative biological effectiveness (RBE) of low-energy X-rays for two human adenocarcinoma cell lines of the breast (MDA-MB-468) and pancreas (BxPC-3) with a mutation in the TP53 gene. Clonogenic survival and cytogenetic changes in terms of micronuclei (MN) formation were determined following irradiation with 25 kV X-rays and 200 kV reference irradiation in the dose range of 1-8 Gy. Except the frequency of MN-containing binucleated cells (BNC) (BNC + MN/BNC) in breast cancer cells yielding an RBE between 0.6 and 0.8, both cell lines displayed dose-dependent variations of RBE values between 1 and 2 for all biological end points (cell survival, (BNC + MN/BNC), MN/BNC, MN/(BNC + MN)) with increased effectiveness of 25 kV irradiation in pancreatic compared to breast cancer cells. The results confirm previous findings indicating increased effectiveness of low-energy X-rays and underline the necessity of careful risk estimation for cancer screening programmes.
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Affiliation(s)
- Bettina Habelt
- Department of Radiotherapy and Radiation Oncology, Medical Faculty Carl Gustav Carus, University of Technology Dresden, Dresden, Germany.
- Department of Psychiatry & Psychotherapy, Medical Faculty Carl Gustav Carus, University of Technology Dresden, Dresden, Germany.
| | - Wolfgang Dörr
- Department of Radiation Oncology, Medical University Vienna, Vienna, Austria
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14
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Hernández A, Endesfelder D, Einbeck J, Puig P, Benadjaoud MA, Higueras M, Ainsbury E, Gruel G, Oestreicher U, Barrios L, Barquinero JF. Biodose Tools: an R shiny application for biological dosimetry. Int J Radiat Biol 2023; 99:1378-1390. [PMID: 36731491 DOI: 10.1080/09553002.2023.2176564] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 01/31/2023] [Indexed: 02/04/2023]
Abstract
INTRODUCTION In the event of a radiological accident or incident, the aim of biological dosimetry is to convert the yield of a specific biomarker of exposure to ionizing radiation into an absorbed dose. Since the 1980s, various tools have been used to deal with the statistical procedures needed for biological dosimetry, and in general those who made several calculations for different biomarkers were based on closed source software. Here we present a new open source program, Biodose Tools, that has been developed under the umbrella of RENEB (Running the European Network of Biological and retrospective Physical dosimetry). MATERIALS AND METHODS The application has been developed using the R programming language and the shiny package as a framework to create a user-friendly online solution. Since no unique method exists for the different mathematical processes, several meetings and periodic correspondence were held in order to reach a consensus on the solutions to be implemented. RESULTS The current version 3.6.1 supports dose-effect fitting for dicentric and translocation assay. For dose estimation Biodose Tools implements those methods indicated in international guidelines and a specific method to assess heterogeneous exposures. The app can include information on the irradiation conditions to generate the calibration curve. Also, in the dose estimate, information about the accident can be included as well as the explanation of the results obtained. Because the app allows generating a report in various formats, it allows traceability of each biological dosimetry study carried out. The app has been used globally in different exercises and training, which has made it possible to find errors and improve the app itself. There are some features that still need consensus, such as curve fitting and dose estimation using micronucleus analysis. It is also planned to include a package dedicated to interlaboratory comparisons and the incorporation of Bayesian methods for dose estimation. CONCLUSION Biodose Tools provides an open-source solution for biological dosimetry laboratories. The consensus reached helps to harmonize the way in which uncertainties are calculated. In addition, because each laboratory can download and customize the app's source code, it offers a platform to integrate new features.
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Affiliation(s)
- Alfredo Hernández
- Department of Animal Biology, Plant Biology and Ecology (BABVE), Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - David Endesfelder
- Department of Effects and Risks of Ionising and Non-Ionising Radiation, Federal Office for Radiation Protection, Neuherberg, Germany
| | - Jochen Einbeck
- Department of Mathematical Sciences, and Durham Research Methods Centre, Durham University, Durham, UK
| | - Pedro Puig
- Department of Mathematics, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Centre de Recerca Matemàtica, Bellaterra, Spain
| | - Mohamed Amine Benadjaoud
- Radiobiology and Regenerative Medicine Research Service (SERAMED), Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France
| | - Manuel Higueras
- Scientific Computation & Technological Innovation Center (SCoTIC), Universidad de La Rioja, Logroño, Spain
| | | | - Gaëtan Gruel
- Radiobiology of Accidental Exposure Laboratory (LRAcc), Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France
| | - Ursula Oestreicher
- Department of Effects and Risks of Ionising and Non-Ionising Radiation, Federal Office for Radiation Protection, Neuherberg, Germany
| | - Leonardo Barrios
- Department of Cell Biology, Physiology and Immunology (BCFI), Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Joan Francesc Barquinero
- Department of Animal Biology, Plant Biology and Ecology (BABVE), Universitat Autònoma de Barcelona, Bellaterra, Spain
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15
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Dimitrijević M, Stanković M, Nikolić J, Mitić V, Stankov Jovanović V, Stojanović G, Miladinović D. The effect of arsenic, cadmium, mercury, and lead on the genotoxic activity of Boletaceae family mushrooms present in Serbia. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2023; 86:23-35. [PMID: 36445018 DOI: 10.1080/15287394.2022.2150992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The aim of this study was to determine accumulation of heavy metals and metalloids which are widely distributed in the environment and in food chain using wild edible mushrooms belonging to the Boletaceae family mushrooms. In addition, methanol extracts of mushrooms were tested for in vitro protective effect by the cytochalasin-B blocked micronucleus (CBMN) assay using chromosome aberrations in human peripheral lymphocytes as a model. The genotoxic activity of methanol extracts prepared at 4 different concentrations (1, 2, 3 or 6 µg/ml) was examined using amifostine and mitomycin C as positive controls. Extracts of species B. regius and B. edulis exhibited the greatest reduction in the frequency of micronuclei (MN). Extract of B. regius at concentrations of 2 µg/ml showed the highest decrease in number of MN. In comparison, extract of mushroom B. edulis at a concentration of 3 µg/ml displayed less reduction. However, as heavy metals and metalloids are found in mushrooms, another aim was to examine whether these agents affected genotoxicity. Principal component analysis (PCA) identified clustering differences between control and heavy metals and metalloids groups and might explain the influence of heavy element content and genotoxic activity in mushrooms.
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Affiliation(s)
| | - M Stanković
- Nuclear Facilities of Serbia, Vinča, Belgrade, Serbia
| | - J Nikolić
- Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Niš, Serbia
| | - V Mitić
- Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Niš, Serbia
| | - V Stankov Jovanović
- Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Niš, Serbia
| | - G Stojanović
- Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Niš, Serbia
| | - D Miladinović
- Department of Pharmacy, Faculty of Medicine, University of Niš, Niš, Serbia
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16
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Silva de Carvalho V, Melo Lima KM, Calandrini de Azevedo LF, Panarra Ferreira Gomes das Neves PA, Borges RDS, Nagamachi CY, Pieczarka JC. New derivative of trans-dehydrocrotonin isolated from Croton cajucara shows reduced cytotoxic and genotoxic effects in hepatocellular carcinoma (HepG2) cell line. Toxicon 2022; 220:106940. [DOI: 10.1016/j.toxicon.2022.106940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 09/11/2022] [Accepted: 10/05/2022] [Indexed: 11/06/2022]
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17
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Chapman F, Sticken ET, Wieczorek R, Pour SJ, Dethloff O, Budde J, Rudd K, Mason E, Czekala L, Yu F, Simms L, Nahde T, O'Connell G, Stevenson M. Multiple endpoint in vitro toxicity assessment of a prototype heated tobacco product indicates substantially reduced effects compared to those of combustible cigarette. Toxicol In Vitro 2022; 86:105510. [DOI: 10.1016/j.tiv.2022.105510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/22/2022] [Accepted: 10/31/2022] [Indexed: 11/13/2022]
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18
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Stanković M, Mitić V, Stankov Jovanović V, Dimitrijević M, Nikolić J, Stojanović G. Selected fungi of the genus Lactarius - screening of antioxidant capacity, antimicrobial activity, and genotoxicity. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2022; 85:699-714. [PMID: 35591784 DOI: 10.1080/15287394.2022.2075502] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
It is well-known that mushrooms of the genus Lactarius constitute a natural food resource providing health benefits as a nutritient. This genus contains 4 mushrooms identified as L. deliciosus, L. volemus, L. sanguifluus, L. semisanguifluus and L. piperatus which were collected in Serbia. The aim of this study aimed was to identify and characterize the content of phenolic compounds and examine the antioxidant potential of 5 wild edible mushrooms. L. sanguifluus contained the highest content of total phenol compounds (75.25 mg gallic acid equivalents (GAE) per g dry extract weight (GAE/g DE) and exhibited the greatest antioxidant activity through the ability to remove radicals as evidenced by ABTS assay (8.99 mg of trolox equivalents (TE) per g dry extract weight (mg TE/g DE); total reducing power (TRP) assay mg ascorbic acid equivalents per mg of dry extract weight (0.42 mg AAE/g DE) and CUPRAC (14.23 mg TE /g DE). L. deliciosus methanolic extract produced greatest scavenging of the DPPH radical (46%). The methanol mushroom extracts were screened for in vitro antimicrobial activity against a panel of pathogenic bacterial strains using the microdilution method. Of all the extracts tested, L. sanguifluus extract showed the best antibacterial properties. The cytokinesis block micronucleus assay results for the examined mushrooms demonstrated that extracts at a concentration of 3 μg/ml decreased the number of micronuclei (MN) in the range of 19-49% which is significant bearing in mind that radioprotectant amifostine reduced the frequency of MN by only 16.3%. Data thus demonstrate that the 5 wild edible mushrooms of genus Lactarius contain constituents that are beneficial not only as nutrients but also have the potential as antioxidants, antibacterial and antigenotoxic properties.
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Affiliation(s)
| | - Violeta Mitić
- Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Niš, Serbia
| | | | | | - Jelena Nikolić
- Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Niš, Serbia
| | - Gordana Stojanović
- Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Niš, Serbia
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19
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Zlatanović I, Stanković M, Ickovski J, Dimitrijević I, Stojanović G. Comprehensive Analysis of the Herbal Mixture Made of Juniperus oxycedrus L. Berries, Inner Bark of Betula pendula Roth., and Grains of Avena sativa L. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221105689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This is the first report of the high-performance liquid chromatography and gas chromatography–mass spectrometry profile of a herbal mixture (HM) made of Juniperus oxycedrus L. (redberry juniper) berries, inner bark of Betula pendula Roth. (silver birch), and grains of Avena sativa L. (oat), and its effect on the No. of micronuclei (MN) in human lymphocytes and toxicity toward Artemia salina. Constituents represented by over 1000 µg per g of methanol dry extract were gallic acid, protocatechuic acid, and amentoflavone. The methanol extract of the HM at a concentration of 2.0 μg/mL decreased MN frequency by 38.3%, which was more than 3 times greater than that of the radioprotectant amifostine. The essential oil isolated from the HM was composed mainly of β-myrcene (32%) and showed weaker toxicity toward Artemia salina than the positive control after both incubation periods (24 h and 48 h). These findings suggest that the examined HM, beside its ethnopharmacological relevance on the elimination of renal calculi, also significantly reduces the No. of MN in human lymphocytes.
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Affiliation(s)
- Ivana Zlatanović
- Faculty of Science and Mathematics, University of Niš, Niš, Serbia
| | | | - Jovana Ickovski
- Faculty of Science and Mathematics, University of Niš, Niš, Serbia
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20
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Lee JY, Kang MH, Jang JE, Lee JE, Yang Y, Choi JY, Kang HS, Lee U, Choung JW, Jung H, Yoon YC, Jung KH, Hong SS, Yi EC, Park SG. Comparative analysis of mesenchymal stem cells cultivated in serum free media. Sci Rep 2022; 12:8620. [PMID: 35597800 PMCID: PMC9124186 DOI: 10.1038/s41598-022-12467-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 05/09/2022] [Indexed: 11/09/2022] Open
Abstract
Stem cells are attractive candidates for the regeneration of tissue and organ. Mesenchymal stem cells (MSCs) have been extensively investigated for their potential applications in regenerative medicine and cell therapy. For developing effective stem cell therapy, the mass production of consistent quality cells is required. The cell culture medium is the most critical aspect of the mass production of qualified stem cells. Classically, fetal bovine serum (FBS) has been used as a culture supplement for MSCs. Due to the undefined and heterologous composition of animal origin components in FBS, efforts to replace animal-derived components with non-animal-derived substances led to safe serum free media (SFM). Adipose derived mesenchymal stem cells (ADSCs) cultivated in SFM provided a more stable population doubling time (PDT) to later passage and more cells in a shorter time compared to FBS containing media. ADSCs cultivated in SFM had lower cellular senescence, lower immunogenicity, and higher genetic stability than ADSCs cultivated in FBS containing media. Differential expression analysis of mRNAs and proteins showed that the expression of genes related with apoptosis, immune response, and inflammatory response were significantly up-regulated in ADSCs cultivated in FBS containing media. ADSCs cultivated in SFM showed similar therapeutic efficacy in an acute pancreatitis mouse model to ADSCs cultivated in FBS containing media. Consideration of clinical trials, not only pre-clinical trial, suggests that cultivation of MSCs using SFM might offer more safe cell therapeutics as well as repeated administration due to low immunogenicity.
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Affiliation(s)
- Joo Youn Lee
- Xcell Therapeutics, Dongwon Bldg. 6F, 333, Yeongdong-daero, Gangnam-gu, Seoul, 06188, Korea.,Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology and College of Medicine Or College of Pharmacy, Seoul National University, Seoul, 03080, Korea
| | - Min Hee Kang
- Xcell Therapeutics, Dongwon Bldg. 6F, 333, Yeongdong-daero, Gangnam-gu, Seoul, 06188, Korea
| | - Ji Eun Jang
- Xcell Therapeutics, Dongwon Bldg. 6F, 333, Yeongdong-daero, Gangnam-gu, Seoul, 06188, Korea
| | - Jeong Eon Lee
- Xcell Therapeutics, Dongwon Bldg. 6F, 333, Yeongdong-daero, Gangnam-gu, Seoul, 06188, Korea
| | - Yuyeong Yang
- Xcell Therapeutics, Dongwon Bldg. 6F, 333, Yeongdong-daero, Gangnam-gu, Seoul, 06188, Korea
| | - Ji Yong Choi
- Xcell Therapeutics, Dongwon Bldg. 6F, 333, Yeongdong-daero, Gangnam-gu, Seoul, 06188, Korea
| | - Hong Seok Kang
- Xcell Therapeutics, Dongwon Bldg. 6F, 333, Yeongdong-daero, Gangnam-gu, Seoul, 06188, Korea
| | - Uiil Lee
- Xcell Therapeutics, Dongwon Bldg. 6F, 333, Yeongdong-daero, Gangnam-gu, Seoul, 06188, Korea
| | - Ji Woong Choung
- Dacapo Oral & Maxillofacial Surgery Clinic, Jeongin Building, 559 Gangnamdae-ro, Seocho-gu, Seoul, 06531, Korea
| | - Hyeryeon Jung
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology and College of Medicine Or College of Pharmacy, Seoul National University, Seoul, 03080, Korea
| | - Young-Chan Yoon
- Department of Medicine, College of Medicine, Inha University, 27 Inhang-ro, Jung-gu, Incheon, 22332, Korea
| | - Kyung Hee Jung
- Department of Medicine, College of Medicine, Inha University, 27 Inhang-ro, Jung-gu, Incheon, 22332, Korea
| | - Soon-Sun Hong
- Department of Medicine, College of Medicine, Inha University, 27 Inhang-ro, Jung-gu, Incheon, 22332, Korea
| | - Eugene C Yi
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology and College of Medicine Or College of Pharmacy, Seoul National University, Seoul, 03080, Korea
| | - Sang Gyu Park
- Department of Pharmacy, College of Pharmacy, Ajou University, Worldcup-ro, 206, Yeongtong-gu, Suwon, 16499, Korea.
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High-Accuracy Relative Biological Effectiveness Values Following Low-Dose Thermal Neutron Exposures Support Bimodal Quality Factor Response with Neutron Energy. Int J Mol Sci 2022; 23:ijms23020878. [PMID: 35055062 PMCID: PMC8779315 DOI: 10.3390/ijms23020878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/24/2021] [Accepted: 12/30/2021] [Indexed: 12/04/2022] Open
Abstract
Theoretical evaluations indicate the radiation weighting factor for thermal neutrons differs from the current International Commission on Radiological Protection (ICRP) recommended value of 2.5, which has radiation protection implications for high-energy radiotherapy, inside spacecraft, on the lunar or Martian surface, and in nuclear reactor workplaces. We examined the relative biological effectiveness (RBE) of DNA damage generated by thermal neutrons compared to gamma radiation. Whole blood was irradiated by 64 meV thermal neutrons from the National Research Universal reactor. DNA damage and erroneous DNA double-strand break repair was evaluated by dicentric chromosome assay (DCA) and cytokinesis-block micronucleus (CBMN) assay with low doses ranging 6–85 mGy. Linear dose responses were observed. Significant DNA aberration clustering was found indicative of high ionizing density radiation. When the dose contribution of both the 14N(n,p)14C and 1H(n,γ)2H capture reactions were considered, the DCA and the CBMN assays generated similar maximum RBE values of 11.3 ± 1.6 and 9.0 ± 1.1, respectively. Consequently, thermal neutron RBE is approximately four times higher than the current ICRP radiation weighting factor value of 2.5. This lends support to bimodal peaks in the quality factor for RBE neutron energy response, underlining the importance of radiological protection against thermal neutron exposures.
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22
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Milosavljevic S, Djordjevic I, Mandic B, Tesevic V, Stankovic M, Todorovic N, Novakovic M. Flavonoids of the Heartwood of Cotinus coggygria Scop. Showing Protective Effect on Human Lymphocyte DNA. Nat Prod Commun 2021. [DOI: 10.1177/1934578x211067289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In continuation of our study on Cotinus coggygria from Serbia, 10 known flavonoids (1-10) were isolated from the methylene chloride/methanol extract of the heartwood. They were tested for in vitro protective effect against chromosome aberrations in peripheral human lymphocytes, using the cytokinesis-block micronucleus assay. All tested compounds (in minimal doses of 1 μg/mL) exerted a beneficial effect by decreasing DNA damage of human lymphocytes in the range of 24.2% to 54.5%, better than the radio protectant control, amifostine. Functional groups, such as 3′,4′-dihydroxyphenyl (catechol), 5-OH, 3-OH, and 4-keto in flavonoids (3-keto in aurones), which play a key role in antioxidant activity, are proposed to be responsible for the DNA protective activity of the tested compounds.
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Affiliation(s)
| | - Iris Djordjevic
- Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia
| | - Boris Mandic
- Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
| | - Vele Tesevic
- Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
| | | | - Nina Todorovic
- Instituite of Chemistry, Technology and Metallurgy, Department of Chemistry, University of Belgrade, Belgrade, Serbia
| | - Miroslav Novakovic
- Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia
- Dedicated to Professor Yoshinori Asakawa on the occasion of his 80th birthday
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23
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Ivković I, Bukvički D, Novaković M, Majstorović I, Leskovac A, Petrović S, Veljić M. Assessment of the Biological Effects of Pellia endiviifolia and its Constituents in Vitro. Nat Prod Commun 2021. [DOI: 10.1177/1934578x211056422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Liverworts are characterized by a high content of bioactive compounds reported to show antimicrobial, anticancer, and antioxidant properties. In this study, the biological effects of the methanol extract of the liverwort Pellia endiviifolia and its constituents, bis-bibenzyls perrottetin E, 10′-hydroxyperrottetin E, and 10,10′-dihydroxyperrottetin E, were investigated using human peripheral blood cells as a model system. The assessment of the investigated compounds comprised testing their genotoxicity, apoptotic potential, and redox modulating activities. The genotoxicity testing indicated that medium (25 µM) and high concentrations (100 µM) of the investigated compounds displayed genotoxic and antiproliferative effects in human lymphocytes as revealed by significant, concentration-dependent enhancement of the micronuclei incidence and decrease in the cytokinesis-block proliferation index compared to the control ( P < .001). Analysis of leukocyte apoptosis showed a substantial potential of all investigated compounds to induce apoptosis, which was not concentration-dependent. The P endiviifolia extract and perrottetin E demonstrated considerable pro-apoptotic potential, even at the lowest concentration (1 µM) applied. Evaluation of the redox modulating effects, which comprised measuring erythrocyte catalase activity and the lymphocyte malondialdehyde level, showed that the investigated compounds did not induce oxidative stress in human peripheral blood cells ( P > .05). The observed genotoxic, antiproliferative, and proapoptotic effects of the investigated compounds make them suitable for further comprehensive studies related to their possible applications as anticancer agents.
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Affiliation(s)
- Ivana Ivković
- University of Belgrade, Institute of Botany and Botanical Garden “Jevremovac”, Belgrade, Serbia
| | - Danka Bukvički
- University of Belgrade, Institute of Botany and Botanical Garden “Jevremovac”, Belgrade, Serbia
| | - Miroslav Novaković
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Belgrade, Serbia
| | - Ivana Majstorović
- Institute for Medical Research, Military Medical Academy, Belgrade, Serbia
| | - Andreja Leskovac
- Vinca Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Sandra Petrović
- Vinca Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Milan Veljić
- University of Belgrade, Institute of Botany and Botanical Garden “Jevremovac”, Belgrade, Serbia
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24
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Poirier MC. DNA damage in cetaceans: A mini review. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2021; 870-871:503392. [PMID: 34583821 DOI: 10.1016/j.mrgentox.2021.503392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 08/02/2021] [Accepted: 08/09/2021] [Indexed: 11/27/2022]
Abstract
DNA damage has long been known to play an essential role in tumorigenesis induced by chemical carcinogen exposure. The preponderance of data generated during the past approximately 50 years of cancer research indicates that DNA damage and DNA adduct formation are necessary but not sufficient for tumor induction by chemical carcinogenesis. This is true for all of the species studied, including experimental animals, some animals in the wild, and humans. Cetaceans, which include whales, dolphins and porpoises, are a challenge to evaluate because tissues are difficult to obtain, and cancer rates, with a single exception, are low (0.7-2.0 %). However, both non-specific (chromosomal aberrations, DNA strand breaks, 8-hydroxy-2'-deoxyguanosine, mitochondrial DNA damage), and chemical-specific (aromatic DNA adducts, and carcinogenic polycyclic aromatic hydrocarbon [PAH]-DNA adducts) DNA damage have been found in cetaceans. For some types of DNA damage, cetaceans may carry a burden similar to that seen in many other species, including humans, but linking DNA damage to cancer rates in cetaceans has been largely impossible. The one exception is a population of beluga whales in the St. Lawrence Estuary (SLE) in Quebec, Canada, where correlations have been found between long-term PAH exposure, PAH-DNA adducts in small intestinal crypt cells, and a high rate (7%) of gastrointestinal cancers. Taken together, the current literature demonstrates that cetaceans may carry a burden of many types of DNA damage and, given the example of the SLE beluga, cetaceans may sustain a potential susceptibility to pollution-induced tumorigenesis. Knowledge of DNA damage and cancer rates in whales is critically important for understanding and predicting the health of marine life, human life, and the aquatic environment of our planet.
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Affiliation(s)
- Miriam C Poirier
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, Bldg 37, Rm 4060, NIH, 37 Convent Dr. MSC-4255, Bethesda, MD, 20892-4255, United States.
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25
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Wang Q, Lee Y, Pujol-Canadell M, Perrier JR, Smilenov L, Harken A, Garty G, Brenner DJ, Ponnaiya B, Turner HC. Cytogenetic Damage of Human Lymphocytes in Humanized Mice Exposed to Neutrons and X Rays 24 h After Exposure. Cytogenet Genome Res 2021; 161:352-361. [PMID: 34488220 PMCID: PMC8455411 DOI: 10.1159/000516529] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 04/02/2021] [Indexed: 11/19/2022] Open
Abstract
Detonation of an improvised nuclear device highlights the need to understand the risk of mixed radiation exposure as prompt radiation exposure could produce significant neutron and gamma exposures. Although the neutron component may be a relatively small percentage of the total absorbed dose, the large relative biological effectiveness (RBE) can induce larger biological DNA damage and cell killing. The objective of this study was to use a hematopoietically humanized mouse model to measure chromosomal DNA damage in human lymphocytes 24 h after in vivo exposure to neutrons (0.3 Gy) and X rays (1 Gy). The human dicentric and cytokinesis-block micronucleus assays were performed to measure chromosomal aberrations in human lymphocytes in vivo from the blood and spleen, respectively. The mBAND assay based on fluorescent in situ hybridization labeling was used to detect neutron-induced chromosome 1 inversions in the blood lymphocytes of the neutron-irradiated mice. Cytogenetics endpoints, dicentrics and micronuclei showed that there was no significant difference in yields between the 2 irradiation types at the doses tested, indicating that neutron-induced chromosomal DNA damage in vivo was more biologically effective (RBE ∼3.3) compared to X rays. The mBAND assay, which is considered a specific biomarker of high-LET neutron exposure, confirmed the presence of clustered DNA damage in the neutron-irradiated mice but not in the X-irradiated mice, 24 h after exposure.
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Affiliation(s)
- Qi Wang
- Center for Radiological Research, Columbia University Irving Medical Center, New York, (NY), USA
| | - Younghyun Lee
- Center for Radiological Research, Columbia University Irving Medical Center, New York, (NY), USA
| | - Monica Pujol-Canadell
- Center for Radiological Research, Columbia University Irving Medical Center, New York, (NY), USA
| | - Jay R. Perrier
- Center for Radiological Research, Columbia University Irving Medical Center, New York, (NY), USA
| | - Lubomir Smilenov
- Center for Radiological Research, Columbia University Irving Medical Center, New York, (NY), USA
| | - Andrew Harken
- Radiological Research Accelerator Facility, Columbia University, Irvington, (NY), USA
| | - Guy Garty
- Radiological Research Accelerator Facility, Columbia University, Irvington, (NY), USA
| | - David J. Brenner
- Center for Radiological Research, Columbia University Irving Medical Center, New York, (NY), USA
| | - Brian Ponnaiya
- Radiological Research Accelerator Facility, Columbia University, Irvington, (NY), USA
| | - Helen C. Turner
- Center for Radiological Research, Columbia University Irving Medical Center, New York, (NY), USA
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26
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Guo X, Qi Y, Li J, Fan H, Yang L, Wu X, Ni J, Wang H, Wang X. A comprehensive study of the genotoxic and anti-genotoxic effects of homocysteine in HUVECs and mouse bone marrow cells. Food Chem Toxicol 2021; 156:112518. [PMID: 34418477 DOI: 10.1016/j.fct.2021.112518] [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: 11/24/2020] [Revised: 08/12/2021] [Accepted: 08/16/2021] [Indexed: 01/24/2023]
Abstract
Elevated Homocysteine (Hcy) is associated with increased risk of vascular disease, but whether it induces genotoxicity to vascular endothelial cells remains unknown. Here, we conducted a comprehensive study of the genotoxicity, and unexpected anti-genotoxicity, of Hcy by cytokinesis-blocked micronucleus assay in HUVECs and erythrocyte micronucleus test in mouse bone marrow cells. Our experiments led to several important findings. First, while supraphysiological Hcy (SP-Hcy) exhibited remarkable genotoxicity, physiologically-relevant Hcy (PR-Hcy) reduced the basal genotoxicity. Second, among the metabolites of Hcy, cysteine phenocopied the anti-genotoxicity of PR-Hcy and, methionine, S-adenosylhomocysteine and H2S phenocopied the genotoxicity of SP-Hcy. Third, the genotoxicity of SP-Hcy was mitigated by vitamin B6, Fe2+ and Cu2+, but was exacerbated by N-acetylcysteine. Fourth, under pre-, co- or post-treatment protocol, both SP-Hcy and PR-Hcy attenuated the genotoxicity of cisplatin, mitomycin-C, nocodazole or deoxycholate. Finally, 100 and 250 mg/kg Hcy ameliorated cisplatin-induced genotoxicity in bone marrow cells of CF-1 and Kunming mice. Our results suggest that genotoxicity may be one mechanism through which Hcy confers an increased risk for vascular disease, but more importantly, they challenge the long-standing paradigm that Hcy is always harmful to human health. Our study calls for a more systematic effort in understanding the molecular mechanisms underlying the anti-genotoxicity of Hcy.
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Affiliation(s)
- Xihan Guo
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China; Yunnan Environmental Mutagen Society, Kunming, Yunnan, 650500, China.
| | - Yanmei Qi
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China
| | - Jianfei Li
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China
| | - Houhong Fan
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China
| | - Limei Yang
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China
| | - Xue Wu
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China
| | - Juan Ni
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China; Yunnan Environmental Mutagen Society, Kunming, Yunnan, 650500, China
| | - Han Wang
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China; Yunnan Environmental Mutagen Society, Kunming, Yunnan, 650500, China
| | - Xu Wang
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China; Yunnan Environmental Mutagen Society, Kunming, Yunnan, 650500, China.
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27
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ÇAVUŞOĞLU K, MACAR O, KALEFETOĞLU MACAR T, YALÇIN E. Zencefilin (Zingiber officinale Roscoe) Diazinon Toksisitesine Karşı Koruyucu Rolünün Allium cepa L. Meristem Hücrelerinde Araştırılması. ADNAN MENDERES ÜNIVERSITESI ZIRAAT FAKÜLTESI DERGISI 2021; 18:65-72. [DOI: 10.25308/aduziraat.814545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2023]
Abstract
Yaygın olarak kullanılan bir pestisit olan diazinon hedef olmayan canlılar üzerinde toksik etkilere sahiptir. Bu çalışma, diazinonun meristem hücrelerinde teşvik ettiği toksisiteye karşı zencefilin koruyucu ve iyileştirici etkisini fizyolojik, genotoksik ve biyokimyasal parametrelerle araştırmayı hedeflemiştir. Ayrıca kök meristem hücrelerinde meydana gelen hasarlar incelenmiştir. Bu amaçla A. cepa soğanları 6 gruba ayrıldı (kontrol, 240 mg/L zencefil, 480 mg/L zencefil, 500 mg/L diazinon, 500 mg/L diazinon + 240 mg/L zencefil ve 500 mg/L diazinon + 480 mg/L zencefil). Diazinon süperoksit dismutaz aktivitesi, katalaz aktivitesi, malondialdehit seviyesi, mikronükleus sıklığı, kromozomal anormallik yoğunluğu ve meristematik hücre hasarlarını arttırmış; ancak mitotik indeksi, çimlenme yüzdesi, kök uzunluğu, ağırlık artışı azaltmıştır. Zencefil, diazinon ile birlikte uygulandığında doza bağlı olarak tüm bu toksisite göstergelerini düşürmüştür. Bu çalışma, A. cepa modeli kullanılarak diazinonun hedef olmayan organizmalar üzerindeki toksik etkilerine karşı zencefilin koruyucu bir rolünü açıkça göstermiştir.
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28
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Nikolouzakis TK, Vakonaki E, Stivaktakis PD, Alegakis A, Berdiaki A, Razos N, Souglakos J, Tsatsakis A, Tsiaoussis J. Novel Prognostic Biomarkers in Metastatic and Locally Advanced Colorectal Cancer: Micronuclei Frequency and Telomerase Activity in Peripheral Blood Lymphocytes. Front Oncol 2021; 11:683605. [PMID: 34262868 PMCID: PMC8274420 DOI: 10.3389/fonc.2021.683605] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 06/14/2021] [Indexed: 01/05/2023] Open
Abstract
PURPOSE Due to the current practice on colorectal cancer (CRC) management, chemoresistance is most often recognized at the end of the treatment. Therefore, effective and easy-to-use prognostic biomarkers are needed. EXPERIMENTAL DESIGN We evaluated the prognostic significance of two novel CRC biomarkers: a) micronuclei frequency (MNf) in 55 metastatic CRC (mCRC) and 21 locally advanced rectal cancer (laRC) patients using cytokinesis block micronucleus assay (CBMN assay) and b) telomerase activity (TA) in 23 mCRC and five laRC patients using TRAP-ELISA. Both biomarkers were evaluated in peripheral blood lymphocytes (PBLs) before, at the middle, and at the end of the therapy (approximately 0, 3, and 6 months) for mCRC patients before, at the end of the therapy, and after surgery for laRC patients. RESULTS Overall, MNf demonstrated significant prognostic value since a decrease of MNf less than 29% between middle and initial MNf measurements can discriminate between progressive and stable/responsive disease with sensitivity of 36% and specificity of 87.0% while being able to identify responsive disease with sensitivity of 72.7% and specificity of 59.3%. On the other hand, TA presented a significant trend of increase (p = 0.07) in patients with progressive disease at the middle measurement. CONCLUSIONS The findings of this study suggest that the MN frequency may serve as a promising prognostic biomarker for the monitoring of the treatment response of patients with CRC, while TA should be evaluated in a larger group of patients to further validate its significance.
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Affiliation(s)
| | - Elena Vakonaki
- Laboratory of Toxicology, Medical School, University of Crete, Heraklion, Greece
| | | | - Athanasios Alegakis
- Laboratory of Toxicology, Medical School, University of Crete, Heraklion, Greece
| | - Aikaterini Berdiaki
- Laboratory of Histology-Embryology, Medical School, The University of Crete, Heraklion, Greece
| | - Nikolaos Razos
- Department of Anatomy, Medical School, University of Crete, Heraklion, Greece
| | - John Souglakos
- Department of Medical Oncology, University General Hospital of Heraklion, and Laboratory of Translational Oncology, Medical School, University of Crete, Heraklion, Greece
| | - Aristidis Tsatsakis
- Department of Forensic Sciences and Toxicology, Medical School, University of Crete, Heraklion, Greece
| | - John Tsiaoussis
- Department of Anatomy, Medical School, University of Crete, Heraklion, Greece
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29
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Kara-Ertekin S, Yazar S, Erkan M. In vitro toxicological assessment of flumethrin's effects on MCF-7 breast cancer cells. Hum Exp Toxicol 2021; 40:2165-2177. [PMID: 34142587 DOI: 10.1177/09603271211022789] [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: 10/21/2022]
Abstract
Pyrethroid pesticides are frequently used for household insect control of insects and in agriculture and livestock. Flumethrin is a pyrethroid that is used against ectoparasites in many animals. The goal of this study was to evaluate the cytotoxic, apoptotic, genotoxic, and estrogenic effects of flumethrin on the mammalian breast cancer cell line (MCF-7). Compared with control groups, a dose-dependent decrease was observed in cell viability at concentrations of 100 µM and higher. The cytotoxic and apoptotic effects detected by LDH assay and AO/EtBr staining increased significantly at a concentration of 1000 µM. The expression of BCL2, which is an anti-apoptotic gene, significantly decreased, whereas BAX, TP53, and P21 expression significantly increased. The results of a comet assay indicated that flumethrin significantly changed tail length, tail % DNA, tail moment, and Olive tail moment in concentrations above 1 and 10 µM. In addition, a 0.1 µM concentration of flumethrin affected ERα receptor mediated cell proliferation and increased transcription of estrogen-responsive pS2 (TFF1) and progesterone receptor (PGR) genes. As a result, flumethrin-induced apoptosis and cytotoxicity at a high concentration, while induced genotoxicity even at lower concentrations. Flumethrin is an endocrine disrupting insecticide with estrogenic effects at very low concentrations.
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Affiliation(s)
- S Kara-Ertekin
- Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Istanbul Yeni Yuzyil University, Istanbul, Turkey.,Institute of Graduate Studies in Sciences, Istanbul University, Istanbul, Turkey
| | - S Yazar
- Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Istanbul Yeni Yuzyil University, Istanbul, Turkey
| | - M Erkan
- Faculty of Science, Department of Biology, Istanbul University, Istanbul, Turkey
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30
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Tian J, Lu Z, Niu S, Zhang S, Ying P, Wang L, Zhang M, Cai Y, Dong T, Zhu Y, Zhong R, Wang Z, Chang J, Miao X. Aberrant MCM10 SUMOylation induces genomic instability mediated by a genetic variant associated with survival of esophageal squamous cell carcinoma. Clin Transl Med 2021; 11:e485. [PMID: 34185429 PMCID: PMC8236122 DOI: 10.1002/ctm2.485] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 06/13/2021] [Accepted: 06/16/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Esophageal squamous cell carcinoma (ESCC) is one of the common gastrointestinal malignancy with an inferior prognosis outcome. DNA replication licensing aberration induced by dysregulation of minichromosome maintenance proteins (MCMs) causes genomic instability and cancer metastasis. SUMOylation modification plays a pivotal role in regulation of genomic integrity, while its dysregulation fueled by preexisting germline variants in cancers remains poorly understood. METHODS Firstly, we conducted two-stage survival analysis consisting of an exome-wide association study in 904 ESCC samples and another independent 503 ESCC samples. Then, multipronged functional experiments were performed to illuminate the potential biological mechanisms underlying the promising variants, and MCM10 influences the ESCC progression. Finally, we tested the effects of MCM10 inhibitors on ESCC cells. RESULTS A germline variant rs2274110 located at the exon 15 of MCM10 was identified to be significantly associated with the prognosis of ESCC patients. Individuals carrying rs2274110-AA genotypes confer a poor survival (hazard ratio = 1.61, 95% confidence interval = 1.35-1.93, p = 1.35 × 10-7 ), compared with subjects carrying rs2274110-AG/GG genotypes. Furthermore, we interestingly found that the variant can increase SUMOylation levels at K669 site (Lys[K]699Arg[R]) of MCM10 protein mediated by SUMO2/3 enzymes, which resulted in an aberrant overexpression of MCM10. Mechanistically, aberrant overexpression of MCM10 facilitated the proliferation and metastasis abilities of ESCC cells in vitro and in vivo by inducing DNA over-replication and genomic instability, providing functional evidence to support our population finding that high expression of MCM10 is extensively presented in tumor tissues of ESCC and correlated with inferior survival outcomes of multiple cancer types, including ESCC. Finally, MCM10 inhibitors Suramin and its analogues were revealed to effectively block the metastasis of ESCC cells. CONCLUSIONS These findings not only demonstrate a potential biological mechanism between aberrant SUMOylation, genomic instability and cancer metastasis, but also provide a promising biomarker aiding in stratifying ESCC individuals with different prognosis, as well as a potential therapeutic target MCM10.
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Affiliation(s)
- Jianbo Tian
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Zequn Lu
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Siyuan Niu
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Shanshan Zhang
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Pingting Ying
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Lu Wang
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Ming Zhang
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Yimin Cai
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Tianyi Dong
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Ying Zhu
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Rong Zhong
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Zhihua Wang
- Department of UrologyTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Jiang Chang
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
| | - Xiaoping Miao
- Department of Epidemiology and BiostatisticsKey Laboratory for Environment and HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Sciences and TechnologyWuhanChina
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Wiest F, Scherzad A, Ickrath P, Poier N, Hackenberg S, Kleinsasser N. [Studies on toxicity and inflammatory reactions induced by e-cigarettes : In vitro exposure of human nasal mucosa cells to propylene glycol at the air-liquid interface]. HNO 2021; 69:952-960. [PMID: 33586050 PMCID: PMC8613128 DOI: 10.1007/s00106-021-00998-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2020] [Indexed: 11/26/2022]
Abstract
Hintergrund Die E‑Zigarette erfreut sich in den letzten Jahren zunehmender Beliebtheit. Die Frage nach der Toxizität ist jedoch noch nicht eindeutig geklärt, und es herrscht global Unsicherheit im Umgang mit der E‑Zigarette. Ziel Ziel der vorliegenden Arbeit war es, Propylenglykol, ein Hauptbestandteil der Liquide, in Bezug auf mögliche akute Entzündungsreaktionen, zyto- und genotoxische Auswirkungen auf humane Nasenschleimhautzellen zu untersuchen. Material und Methoden Die Nasenschleimhautzellen wurden von zehn Probanden im Air-Liquid-Interface kultiviert und anschließend mit unterschiedlichen Konzentrationen des Propylenglykols bedampft. Die Analyse erfolgte mittels Trypanblau-Test, Comet-Assay, Mikrokerntest und IL-6- und IL-8-Sandwich-ELISA. Ergebnis Der Trypanblau-Test zeigte keine Reduktion der Vitalität. Im Sandwich-ELISA konnte kein Anstieg der IL-6- und IL-8-Konzentrationen nachgewiesen werden. Im Comet-Assay zeigte das Olive Tail Moment eine Schädigung im Vergleich zur Negativkontrolle in allen untersuchten Konzentrationen. Zudem zeigte sich eine dosisabhängige Schädigung. Im Mikrokerntest konnte ein Unterschied zwischen dem Reinstoff und der Negativkontrolle gefunden werden. Schlussfolgerung Es zeigten sich möglicherweise reparable DNS-Schädigungen im Comet-Assay. Im Mikrokerntest konnten diese nur in der Reinstoffkonzentration bestätigt werden. Es sollte ein restriktiver Umgang mit der E‑Zigarette erfolgen, bis insbesondere Langzeitstudien vorliegen. Zudem ist eine eindeutige Deklaration der Inhaltsstoffe der Liquide durch die Hersteller zu fordern, um weitergehende Schädigungspotenziale untersuchen zu können.
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Affiliation(s)
- F Wiest
- Klinik und Poliklinik für Hals‑, Nasen- und Ohrenkrankheiten, plastische und ästhetische Operationen, Universitätsklinikum Würzburg, Josef-Schneider-Straße 11, 97080, Würzburg, Deutschland
| | - A Scherzad
- Klinik und Poliklinik für Hals‑, Nasen- und Ohrenkrankheiten, plastische und ästhetische Operationen, Universitätsklinikum Würzburg, Josef-Schneider-Straße 11, 97080, Würzburg, Deutschland
| | - P Ickrath
- Klinik und Poliklinik für Hals‑, Nasen- und Ohrenkrankheiten, plastische und ästhetische Operationen, Universitätsklinikum Würzburg, Josef-Schneider-Straße 11, 97080, Würzburg, Deutschland
| | - N Poier
- Klinik für Hals‑, Nasen- und Ohrenheilkunde, Kepler Universitätsklinikum Linz, Krankenhausstraße 9, 4021, Linz, Österreich
| | - S Hackenberg
- Klinik und Poliklinik für Hals‑, Nasen- und Ohrenkrankheiten, plastische und ästhetische Operationen, Universitätsklinikum Würzburg, Josef-Schneider-Straße 11, 97080, Würzburg, Deutschland
| | - N Kleinsasser
- Klinik und Poliklinik für Hals‑, Nasen- und Ohrenkrankheiten, plastische und ästhetische Operationen, Universitätsklinikum Würzburg, Josef-Schneider-Straße 11, 97080, Würzburg, Deutschland.
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32
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Pajic J, Rovcanin B. Ionizing radiation-induced genotoxic and oxidative damage in peripheral lymphocytes and plasma of healthy donors. Mutat Res 2021; 863-864:503313. [PMID: 33678245 DOI: 10.1016/j.mrgentox.2021.503313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 12/20/2022]
Abstract
Biological dosimetry of ionizing radiation (IR) exposure relies on validated cytogenetic tests measuring the frequencies of micronuclei (MN) and dicentric chromosomes (DC). IR also causes oxidative damage of biomolecules, including DNA. We evaluated IR-induced genotoxic and oxidative damage in a carefully defined cohort of healthy donors, reducing confounding factors as much as possible. Frequencies of MN and DC (peripheral blood lymphocyte cultures) and oxidative stress parameters (plasma) were quantified. We observed dose dependence of both cytogenetic and biochemical endpoints, independent of age, sex, and smoking habits. Oxidative stress parameters, especially oxidative stress index, malondialdehyde, advanced oxidation protein products, and catalase, may be used confidently to assess IR-induced damage, if cytogenetic results are unavailable.
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Affiliation(s)
- J Pajic
- Serbian Institute of Occupational Health "Dr Dragomir Karajovic", Deligradska 29, Belgrade, Serbia.
| | - B Rovcanin
- Branislav Rovcanin, Center for Endocrine Surgery, Clinical Center of Serbia, Faculty of Medicine, University of Belgrade, Koste Todorovica 8, Belgrade, Serbia
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33
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Stamenović U, Davidović S, Petrović S, Leskovac A, Stoiljković M, Vodnik V. Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles. NEW J CHEM 2021. [DOI: 10.1039/d1nj02729h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two Ag–PANI/PVP nanocomposites were prepared using in situ integration of AgNPs during oxidative aniline polymerization, accelerated by the presence of PVP, which as well minimized the risk of particle agglomeration and macroscopic precipitation.
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Affiliation(s)
- Una Stamenović
- Vinča Institute of Nuclear Sciences – National Institute of the Republic of Serbia
- University of Belgrade
- 11001 Belgrade
- Serbia
| | - Slađana Davidović
- Faculty of Technology and Metallurgy
- University of Belgrade
- Karnegijeva 4
- 11000 Belgrade
- Serbia
| | - Sandra Petrović
- Vinča Institute of Nuclear Sciences – National Institute of the Republic of Serbia
- University of Belgrade
- 11001 Belgrade
- Serbia
| | - Andreja Leskovac
- Vinča Institute of Nuclear Sciences – National Institute of the Republic of Serbia
- University of Belgrade
- 11001 Belgrade
- Serbia
| | - Milovan Stoiljković
- Vinča Institute of Nuclear Sciences – National Institute of the Republic of Serbia
- University of Belgrade
- 11001 Belgrade
- Serbia
| | - Vesna Vodnik
- Vinča Institute of Nuclear Sciences – National Institute of the Republic of Serbia
- University of Belgrade
- 11001 Belgrade
- Serbia
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34
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Shah N, Khan A, Habib Khan N, Khisroon M. Genotoxic Consequences in Common Grass Carp (Ctenopharyngodon idella Valenciennes, 1844) Exposed to Selected Toxic Metals. Biol Trace Elem Res 2021; 199:305-314. [PMID: 32285323 DOI: 10.1007/s12011-020-02122-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 03/18/2020] [Indexed: 10/24/2022]
Abstract
The primary aim of the current study was to recognize the biomarker approach as the finest tool to identify the geno-toxicological effects of copper, chromium, and lead inside the blood of grass carp using micronucleus test and comet assay. The induced micronuclei frequency in response to the administered concentrations of LC50 metals was discovered in the erythrocytes of metal-exposed fish at four-time intervals. The genotoxic effect of these metals with respect to the formation of micronuclei was ranked as chromium > lead > copper. Percentages of other cellular and nuclear abnormalities were also determined in the exposed blood films. Equally, the genotoxic studies in terms of comet assay in fish blood revealed significant deviations p < 0.05 against each of the studied metal at their respective time interval as compared with the healthy fish group. However, induced frequency of micronuclei and the calculated DNA damage were not found to be duration dependent. Consequently, copper, chromium, and lead have been explored as cytotoxic elements that can be responsible for inducing genotoxic effects in fish existing aquatic habitats.
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Affiliation(s)
- Nazish Shah
- Department of Zoology, University of Swabi, Anbar Campus, Swabi, Khyber Pakhtunkhwa, Pakistan.
- Department of Zoology, University of Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan.
| | - Ajmal Khan
- Department of Zoology, University of Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Nazma Habib Khan
- Department of Zoology, University of Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Khisroon
- Department of Zoology, University of Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan
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35
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de Souza DV, de Moraes Malinverni AC, Ribeiro DA. Comments on "Monitoring human genotoxicity risk associated to urban and industrial Buenos Aires air pollution exposure" by Los A Gutiérrez et al. (2020). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:4881-4882. [PMID: 32862343 DOI: 10.1007/s11356-020-10630-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 08/25/2020] [Indexed: 06/11/2023]
Affiliation(s)
- Daniel Vitor de Souza
- Departments of Biosciences, Federal University of São Paulo - UNIFESP, Rua Silva Jardim, 136, Room 332, Vila Mathias, Santos, SP, 11050-020, Brazil
| | - Andrea Cristina de Moraes Malinverni
- Departments of Biosciences, Federal University of São Paulo - UNIFESP, Rua Silva Jardim, 136, Room 332, Vila Mathias, Santos, SP, 11050-020, Brazil
| | - Daniel Araki Ribeiro
- Departments of Biosciences, Federal University of São Paulo - UNIFESP, Rua Silva Jardim, 136, Room 332, Vila Mathias, Santos, SP, 11050-020, Brazil.
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36
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Kašuba V, Milić M, Želježić D, Mladinić M, Pizent A, Kljaković-Gašpić Z, Balija M, Jukić I. Biomonitoring findings for occupational lead exposure in battery and ceramic tile workers using biochemical markers, alkaline comet assay, and micronucleus test coupled with fluorescence in situ hybridisation. Arh Hig Rada Toksikol 2020; 71:339-352. [PMID: 33410779 PMCID: PMC7968510 DOI: 10.2478/aiht-2020-71-3427] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/01/2020] [Accepted: 11/01/2020] [Indexed: 01/19/2023] Open
Abstract
Manufacture of lead-containing products has long been associated with various health risks. To get an insight into the related genotoxic risks, we conducted a biomonitoring study in 50 exposed workers and 48 matched controls using a battery of endpoints that sensitively detect the extent of genome instability in peripheral blood lymphocytes. The levels of primary DNA damage were estimated with the alkaline comet assay, while cytogenetic abnormalities were determined with the cytokinesis-block micronucleus (CBMN) cytome assay. Additionally, CBMN slides of 20 exposed and 16 control participants were subjected to fluorescence in situ hybridisation (FISH), coupled with pancentromeric probes to establish the incidence of centromere-positive micronuclei, nuclear buds, and nucleoplasmic bridges. Blood lead levels (B-Pb) were measured with atomic absorption spectrometry. To further characterise cumulative effects of occupational exposure, we measured erythrocyte protoporphyrin (EP) concentrations and delta-aminolevulinic acid dehydratase (ALAD) activity in blood. We also assessed the influence of serum folate (S-folate) and vitamin B12 (S-B12) on genome stability. Compared to controls, occupationally exposed workers demonstrated significantly higher B-Pb (298.36±162.07 vs 41.58±23.02), MN frequency (18.71±11.06 vs 8.98±7.50), centromere positive MN (C+ MN) (8.15±1.8 vs 3.69±0.47), and centromere negative MN (C- MN) (14.55±1.80 vs 4.56±0.89). Exposed women had significantly higher comet tail intensity (TI) and length (TL) than control women. Furthermore, workers showed a positive correlation between age and nuclear buds and MN, between MN and years of exposure, and between S-B12 levels and TI and ALAD activity, while a negative correlation was found between TI and B-Pb. These findings suggest that occupational settings in the manufacture of lead-containing products pose significant genotoxic risks, which calls for developing more effective work safety programmes, including periodical monitoring of B-Pb and genetic endpoints.
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Affiliation(s)
- Vilena Kašuba
- Institute for Medical Research and Occupational Health, Mutagenesis Unit, Zagreb, Croatia
| | - Mirta Milić
- Institute for Medical Research and Occupational Health, Mutagenesis Unit, Zagreb, Croatia
| | - Davor Želježić
- Institute for Medical Research and Occupational Health, Mutagenesis Unit, Zagreb, Croatia
| | | | - Alica Pizent
- Institute for Medical Research and Occupational Health, Analytical Toxicology and Mineral Metabolism Unit, Zagreb, Croatia
| | - Zorana Kljaković-Gašpić
- Institute for Medical Research and Occupational Health, Analytical Toxicology and Mineral Metabolism Unit, Zagreb, Croatia
| | - Melita Balija
- Croatian Institute for Transfusion Medicine, Zagreb, Croatia
| | - Irena Jukić
- Croatian Institute for Transfusion Medicine, Zagreb, Croatia
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37
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Yan L, Zhao Z, Wang X, Lyu T, Li J, Qi Y, Wang X, Guo X. Short-term in vitro glutamine restriction differentially impacts the chromosomal stability of transformed and non-transformed cells. Mutagenesis 2020; 35:geaa026. [PMID: 33043986 DOI: 10.1093/mutage/geaa026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 09/10/2020] [Indexed: 11/13/2022] Open
Abstract
Glutamine (Gln) is a non-essential amino acid central for generating building blocks and cellular energy in tumours and rapidly proliferating non-transformed cells. However, the influence of Gln on regulating chromosomal stability of transformed and non-transformed cells remain poorly understand. We hypothesised that Gln is required for maintaining a homeostatic level of chromosomal stability. To this end, transformed cells HeLa and A375 and non-transformed cells NCM460 and HUVEC cells were intervened with varying concentrations of Gln (10, 1, 0.1 and 0.01 mM), with or without cisplatin (0.1 µg/ml), for 24 h. The cytokinesis-block micronucleus (MN) assay was used to determine chromosomal instability (CIN), the extent of which is reflected by the frequency of MN, nucleoplasmic bridge (NPB) and nuclear bud (NB). We demonstrated an unexpected decrease in the spontaneous rate of MN, but not NPB and NB, after Gln restriction in HeLa and A375 cells. Gln restriction reduced cisplatin-induced MN, but not NPB and NB, in HeLa and A375 cells. We further revealed that Gln restriction suppressed the proliferation of HeLa cells with high CIN induced by nocodazole, partially explaining why Gln restriction decreased the frequency of spontaneous and cisplatin-induced MN in transformed cells. In contrast, Gln restriction increased MN and NB, but not NPB, in NCM460 cells. In HUVEC cells, Gln restriction increased MN, NPB and NB. Meanwhile, Gln restriction sensitised NCM460 cells to cisplatin-induced genotoxicity. A similar but more pronounced pattern was observed in HUVEC cells. Collectively, these results suggest that the in vitro influences of Gln metabolism on CIN depend on cellular contexts: Transformed cells require high Gln to fine tune their CIN in an optimal rate to maximise genomic heterogeneity and fitness, whereas non-transformed cells need high Gln to prevent CIN.
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Affiliation(s)
- Ling Yan
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Ziru Zhao
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Xiaoran Wang
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Ting Lyu
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Jianfei Li
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Yanmei Qi
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
| | - Xu Wang
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Chenggong District, Kunming, Yunnan, China
- Yunnan Environmental Society, Chenggong District, Kunming, Yunnan, China
| | - Xihan Guo
- School of Life Sciences, Yunnan Normal University, Chenggong District, Kunming, Yunnan, China
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Chenggong District, Kunming, Yunnan, China
- Yunnan Environmental Society, Chenggong District, Kunming, Yunnan, China
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38
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Volobaev VP, Serdyukova ES, Kalyuzhnaya EE, Schetnikova EA, Korotkova AD, Naik AA, Bach SN, Prosekov AY, Larionov AV. Investigation of the genotoxic effects of fluoride on a bone tissue model. Toxicol Res 2020; 36:337-342. [PMID: 33005593 DOI: 10.1007/s43188-020-00039-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 01/14/2020] [Accepted: 01/23/2020] [Indexed: 12/01/2022] Open
Abstract
Fluorides are thought to be a major cause of osteocarcinogenesis, due to their widespread industrial use, ability to accumulate in bone tissue, and genotoxic and probable carcinogenic properties. In vitro experiments investigating the genotoxic potential of fluorides in bone tissue models can provide valuable indirect information on their involvement in osteocarcinogenesis. Here, we investigated whether sodium fluoride (NaF) has the ability to induce DNA damage and chromosomal abnormalities in human osteosarcoma cells after 48 and 72 h of exposure. The cell cultures were treated with NaF in concentrations of 0, 20, 100 and 200 μg/ml. The level of DNA damage was assessed by the comet assay, and the frequency of chromosomal abnormalities by a micronucleus test. A significant increase in DNA damage indicators was noted in the samples treated with fluoride concentrations of 100 and 200 µg/ml, after 48 and 72 h of exposure. The micronucleus test revealed a dose-dependent increase in cells with micronuclei, nucleoplasmic bridges and nuclear protrusions. Increasing the concentration of NaF led to an increase in the prevalence of cytogenetic indicators after both treatment durations. This demonstrated ability of fluorine to exert genotoxic effects on bone cells indirectly indicates the possible importance of fluoride in the aetiology of osteosarcoma.
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Affiliation(s)
- V P Volobaev
- Department of Genetics, Kemerovo State University, Krasnaya St 6, Kemerovo, Russia 650000
| | - E S Serdyukova
- Tomsk State University, Lenin Avenue, 36, Tomsk, Russia 634050
| | - E E Kalyuzhnaya
- Department of Genetics, Kemerovo State University, Krasnaya St 6, Kemerovo, Russia 650000
| | - E A Schetnikova
- Department of Genetics, Kemerovo State University, Krasnaya St 6, Kemerovo, Russia 650000
| | - A D Korotkova
- Department of Genetics, Kemerovo State University, Krasnaya St 6, Kemerovo, Russia 650000
| | - A A Naik
- Department of Genetics, Kemerovo State University, Krasnaya St 6, Kemerovo, Russia 650000
| | - S N Bach
- Department of Genetics, Kemerovo State University, Krasnaya St 6, Kemerovo, Russia 650000
| | - A Y Prosekov
- Department of Genetics, Kemerovo State University, Krasnaya St 6, Kemerovo, Russia 650000
| | - A V Larionov
- Department of Genetics, Kemerovo State University, Krasnaya St 6, Kemerovo, Russia 650000
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39
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Fehr M, Appl Á, Esdaile DJ, Naumann S, Schulz M, Dahms I. D-10-camphorsulfonic acid: Safety evaluation. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2020; 858-860:503257. [PMID: 33198938 DOI: 10.1016/j.mrgentox.2020.503257] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/11/2020] [Accepted: 09/12/2020] [Indexed: 11/19/2022]
Abstract
The safety of D-10-camphorsulfonic acid (CSA) was evaluated by genotoxicity testing and in a subchronic 90-day study in rats. Ames test and in vitro micronucleus test results, either in the absence or the presence of metabolic activation, were negative. Administration of CSA to Wistar rats in the drinking water (0.05, 0.20, or 1.00 mg/mL), for 90 days caused neither test-item-related mortality nor adverse clinical signs. The only macroscopic change seen at necropsy was enlarged testes in the high-dose animals. The 0.20 mg/mL (25 mg/kg bw/day) dose level was considered to be the no observed adverse effect level (NOAEL). A total intake calculation for consumers was performed, based on the intended maximal amount of 0.5 ppm CSA in feed, published transfer factors, and conservative tissue consumption data, resulting in 0.29 μg/kg bw/day. Therefore, the NOAEL is approximately 80,000 × the maximum estimated human exposure, a margin that is more than adequate to ensure consumer safety.
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Affiliation(s)
- Markus Fehr
- DSM Nutritional Products, Wurmisweg 576, 4303 Kaiseraugst, Switzerland.
| | - Ádám Appl
- Charles River, Veszprém, Szabadságpuszta, 8200, Hungary.
| | | | - Steffen Naumann
- ICCR-Roßdorf GmbH, In den Leppsteinswiesen 19, 64380 Roßdorf, Germany.
| | - Markus Schulz
- ICCR-Roßdorf GmbH, In den Leppsteinswiesen 19, 64380 Roßdorf, Germany.
| | - Irina Dahms
- DSM Nutritional Products, Wurmisweg 576, 4303 Kaiseraugst, Switzerland.
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40
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Gameiro PH, Assis KH, Hasenack H, Arenzon A, Dias Silva KU, Torres de Lemos C, Ferrão Vargas VM. Evaluation of effect of hazardous contaminants in areas for the abstraction of drinking water. ENVIRONMENTAL RESEARCH 2020; 188:109862. [PMID: 32846646 DOI: 10.1016/j.envres.2020.109862] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 06/16/2020] [Accepted: 06/19/2020] [Indexed: 06/11/2023]
Abstract
The lower portion of Taquari River is influenced by compounds from anthropic activities causing concern about the drinking water supplied to cities in the region. The study objective was to investigate the presence of contaminants at drinking water abstraction sites, defining the mutagenic effects of these stressors as an ecosystem quality parameter and its possible effects on human health. Geographic Information System techniques were used to investigate sources of contamination and it was found that agricultural activities predominated with a few medium and high potential pollutant agricultural activities, besides a soil area that was contaminated and undergoing an intervention process. Mutagenic effects were evaluated by Salmonella/microsome assay using TA98, TA97a, TA100, YG1041 and YG1042 strains in the presence and absence of metabolic activation (S9). Mutagenesis found in organic sediment extracts and surface water samples showed the prevalence of direct-acting mutagens at the drinking water abstraction sites. Taquari (Ta032, the sampling points were named according to the initial letters of the river (Ta), followed by the number of kilometers from the mouth) showed the highest mutagenic potency in sediment, while Ta063, at Bom Retiro do Sul, presented it in the water sample. In the Triunfo region (Ta011) there were significant responses in sediment and in water samples. The samples at General Câmara (Ta006) showed the least presence of contaminants. The Allium cepa test applied to sediments in natura showed significant micronucleus induction in Ta032 in accordance with the Salmonella/microssome assay. The test performed on Danio rerio embryos (FET) in the in natura water samples did not present significant responses. Chemical analyses of polycyclic aromatic hydrocarbons and metals already identified as chemical markers in the area indicated a small contribution to the mutagenic potency, calling attention to the fact that other direct-acting pollutants may be present at the drinking water abstraction sites.
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Affiliation(s)
- Paula Hauber Gameiro
- Programa de Pós-graduação Em Ecologia, Universidade Federal Do Rio Grande Do Sul (UFRGS), Av. Bento Gonçalves, 9500, 91501-970, Cx Postal 15007, Porto Alegre, RS, Brazil
| | - Kauê Hohn Assis
- Divisão de Laboratórios, Fundação Estadual de Proteção Ambiental Henrique Luís Roessler (FEPAM), Rua Aurélio Porto, 37, 90620-090, Porto Alegre, RS, Brazil
| | - Heinrich Hasenack
- Centro de Ecologia (UFRGS), Av. Bento Gonçalves, 9500. Setor 4, Prédio 43411, 91.501-970, Campus Do Vale, Porto Alegre, RS, Brazil
| | - Alexandre Arenzon
- Centro de Ecologia (UFRGS), Av. Bento Gonçalves, 9500. Setor 4, Prédio 43411, 91.501-970, Campus Do Vale, Porto Alegre, RS, Brazil
| | - Kewen Ubirajara Dias Silva
- Divisão de Laboratórios, Fundação Estadual de Proteção Ambiental Henrique Luís Roessler (FEPAM), Rua Aurélio Porto, 37, 90620-090, Porto Alegre, RS, Brazil
| | - Clarice Torres de Lemos
- Divisão de Laboratórios, Fundação Estadual de Proteção Ambiental Henrique Luís Roessler (FEPAM), Rua Aurélio Porto, 37, 90620-090, Porto Alegre, RS, Brazil
| | - Vera Maria Ferrão Vargas
- Divisão de Laboratórios, Fundação Estadual de Proteção Ambiental Henrique Luís Roessler (FEPAM), Rua Aurélio Porto, 37, 90620-090, Porto Alegre, RS, Brazil; Centro de Ecologia (UFRGS), Av. Bento Gonçalves, 9500. Setor 4, Prédio 43411, 91.501-970, Campus Do Vale, Porto Alegre, RS, Brazil.
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41
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Wieczorek R, Phillips G, Czekala L, Trelles Sticken E, O'Connell G, Simms L, Rudd K, Stevenson M, Walele T. A comparative in vitro toxicity assessment of electronic vaping product e-liquids and aerosols with tobacco cigarette smoke. Toxicol In Vitro 2020; 66:104866. [PMID: 32353510 DOI: 10.1016/j.tiv.2020.104866] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 11/18/2022]
Abstract
The use of electronic vaping products (EVPs) continues to increase worldwide among adult smokers in parallel with accumulating information on their potential toxicity and relative safety compared to tobacco smoke. At this time, in vitro assessments of many widely available EVPs are limited. In this study, an in vitro battery of established assays was used to examine the cytotoxic (Neutral red uptake), genotoxic (In vitro micronucleus) and mutagenic (Bacterial reverse mutation) responses of two commercial EVPs (blu GO™ disposable and blu PLUS+™ rechargeable) when compared to smoke from a reference cigarette (3R4F). In total, 12 commercial products were tested as e-liquids and as aerosols. In addition, two experimental base liquids containing 1.2% and 2.4% nicotine were also assessed to determine the effect of flavour and nicotine on all three assays. In the bacterial reverse mutation (Ames) and in vitro micronucleus (IVM) assays, exposures to e-liquids and EVP aerosols, with and without nicotine and in a range of flavourings, showed no mutagenic or genotoxic effects compared to tobacco smoke. The neutral red uptake (NRU) assay showed significantly reduced cytotoxicity (P < .05) for whole undiluted EVP aerosols compared to tobacco smoke, which by contrast was markedly cytotoxic even when diluted. The reduced in vitro toxicological responses of the EVPs add to the increasing body of scientific weight-of-evidence supporting the role of high-quality EVPs as a harm reduction tool for adult smokers.
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Affiliation(s)
- R Wieczorek
- Reemtsma Cigarettenfabriken GmbH - Imperial Brands, Albert-Einstein-Ring 7, 22761 Hamburg, Germany
| | - G Phillips
- Imperial Brands PLC, 121 Winterstoke Road, Bristol BS3 2LL, UK.
| | - L Czekala
- Imperial Brands PLC, 121 Winterstoke Road, Bristol BS3 2LL, UK
| | - E Trelles Sticken
- Reemtsma Cigarettenfabriken GmbH - Imperial Brands, Albert-Einstein-Ring 7, 22761 Hamburg, Germany
| | - G O'Connell
- Imperial Brands PLC, 121 Winterstoke Road, Bristol BS3 2LL, UK
| | - L Simms
- Imperial Brands PLC, 121 Winterstoke Road, Bristol BS3 2LL, UK
| | - K Rudd
- Imperial Brands PLC, 121 Winterstoke Road, Bristol BS3 2LL, UK
| | - M Stevenson
- Imperial Brands PLC, 121 Winterstoke Road, Bristol BS3 2LL, UK
| | - T Walele
- Imperial Brands PLC, 121 Winterstoke Road, Bristol BS3 2LL, UK
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42
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Moshou H, Karakitsou A, Yfanti F, Hela D, Vlastos D, Paschalidou AK, Kassomenos P, Petrou I. Assessment of genetic effects and pesticide exposure of farmers in NW Greece. ENVIRONMENTAL RESEARCH 2020; 186:109558. [PMID: 32361259 DOI: 10.1016/j.envres.2020.109558] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 04/10/2020] [Accepted: 04/18/2020] [Indexed: 06/11/2023]
Abstract
The present study aims at evaluating potential genotoxic and cytotoxic effects caused by the occupational exposure of farmers to pesticide mixtures in the Aitoloakarnania Prefecture (Greece). The aforementioned assessment was conducted through in vivo Cytokinesis Block Micronucleus assay (CBMN assay) in peripheral blood lymphocytes, in relation to chemical analysis of pesticide residues in blood samples. The exposure of the farmers' population studied to different combinations of pesticides induced significant differences in the frequencies of micronuclei (MN) compared to those of the control group. Furthermore, our results indicated a possible clastogenic and aneugenic effect of pesticides on the genetic material of the farmers exposed. Five pesticides (trifluralin, chlorpyriphos methyl, metolachlor, fenthion and dimethoate) and three metabolites (fenthion sulfone, fenthion sulfoxide and 4,4' DDE) were detected in the 62.5% of blood samples, with mean concentrations ranging from 0.4 ng/ml to 48 ng/ml. Since the farmers studied probably exhibit detectable levels of systematic exposure to the pesticides applied, continuous educational programs focused on the rational and safe use of pesticides, together with implementation of risk communication strategies among farmers are highly recommended.
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Affiliation(s)
- H Moshou
- Department of Environmental and Natural Resources Management, University of Patras, GR-30100, Agrinion, Greece
| | - A Karakitsou
- Department of Business Administration of Agricultural and Food Enterprise, University of Patras, GR-30100, Agrinion, Greece
| | - F Yfanti
- Department of Business Administration of Agricultural and Food Enterprise, University of Patras, GR-30100, Agrinion, Greece
| | - D Hela
- Department of Chemistry, University of Ioannina, GR-45110, Ioannina, Greece.
| | - D Vlastos
- Department of Environmental Engineering, University of Patras, GR-30100, Agrinion, Greece.
| | - A K Paschalidou
- Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, GR-68200, Orestiada, Greece
| | - P Kassomenos
- Department of Physics, University of Ioannina, GR-45110, Ioannina, Greece
| | - I Petrou
- Department of Physics, University of Ioannina, GR-45110, Ioannina, Greece
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43
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Güner A. Toxic and irritant effects induced by zearalenone: prevention by taurine. TOXIN REV 2020. [DOI: 10.1080/15569543.2020.1777432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Adem Güner
- Department of Biology, Faculty of Science and Art, Giresun University, Giresun, Turkey
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44
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Jalali AH, Mozdarani H, Ghanaati H. The genotoxic effects of contrast enhanced abdominopelvic 3-tesla magnetic resonance imaging on human circulating leucocytes. Eur J Radiol 2020; 129:109037. [PMID: 32446124 DOI: 10.1016/j.ejrad.2020.109037] [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: 12/06/2019] [Revised: 03/16/2020] [Accepted: 04/22/2020] [Indexed: 11/29/2022]
Abstract
PURPOSE To evaluate the effects of contrast enhanced abdominopelvic magnetic resonance imaging (MRI) on DNA damage. METHODS For this study, blood samples of 20 volunteers (15 women and 5 men) with mean age of 43 ± 8 years were assessed. The mean age of women was 41.4 ± 8.9 years and mean age of men was 48.5 ± 4.9 years (P = 0.14). Peripheral blood samples were collected before, 2 and 24 h after MRI in heparin and ethylenediaminetetraacetic acid (EDTA) containing tubes. Heparinized blood was cultured to assess the cytogenetic effects using cytokinesis blocked micronucleus (CBMN) assay. After isolation of mononuclear cells, alterations in genes involved in repair (CHEK2, p21) and apoptosis (BAX, BCL2) were analyzed using real-time polymerase chain reaction (qRT-PCR). RESULTS The mean number of MN in binucleated cells at before, 2 and 24 h after MRI were 17.9 ± 2.9, 18.1 ± 2.4 and 18.3 ± 2.6, respectively (p > 0.05). Results of gene expression according to fold change compared with the baseline were 1.2 ± 0.6 and 1.02 ± 0.5 at 2 and 24 h after MRI for CHEK2, and 1.3 ± 0.7 and 1.7 ± 0.7 for CDKN1A (p21); respectively (p > 0.05). Gene expression based on fold change compared with baseline were 0.9 ± 0.6 and 1.2 ± 0.8 at 2 and 24 h after MRI for BAX, and 1.05 ± 0.3 and 1.1 ± 0.7 for BCL2; respectively (p > 0.05). CONCLUSION Contrast enhanced abdominopelvic MRI showed no adverse effect on DNA in terms of MN formation and alterations in expression levels of some genes involved in repair and apoptosis pathways.
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Affiliation(s)
- Amir Hossein Jalali
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hossein Mozdarani
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Hossein Ghanaati
- Advanced Diagnostic and Interventional Radiology Research Center, Tehran University of Medical Sciences, Tehran, Iran
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45
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Turkez H, Cacciatore I, Arslan ME, Fornasari E, Marinelli L, Di Stefano A, Mardinoglu A. Histidyl-Proline Diketopiperazine Isomers as Multipotent Anti-Alzheimer Drug Candidates. Biomolecules 2020; 10:biom10050737. [PMID: 32397415 PMCID: PMC7277666 DOI: 10.3390/biom10050737] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 04/26/2020] [Accepted: 04/29/2020] [Indexed: 12/13/2022] Open
Abstract
Cyclic dipeptides administered by both parenteral and oral routes are suggested as promising candidates for the treatment of neurodegeneration-related pathologies. In this study, we tested Cyclo (His-Pro) isomers (cHP1-4) for their anti-Alzheimer potential using a differentiated human neuroblastoma cell line (SH-SY5Y) as an Alzheimer’s disease (AD) experimental model. The SH-SY5Y cell line was differentiated by the application of all-trans retinoic acid (RA) to obtain mature neuron-like cells. Amyloid-beta 1-42 (Aβ1-42) peptides, the main effector in AD, were administered to the differentiated cell cultures to constitute the in vitro disease model. Next, we performed cell viability analyses 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and lactate dehydrogenase (LDH) release assays) to investigate the neuroprotective concentrations of cyclodipeptides using the in vitro AD model. We evaluated acetylcholinesterase (AChE), α- and β-secretase activities (TACE and BACE1), antioxidant potency, and apoptotic/necrotic properties and performed global gene expression analysis to understand the main mechanism behind the neuroprotective features of cHP1-4. Moreover, we conducted sister chromatid exchange (SCE), micronucleus (MN), and 8-hydroxy-2′-deoxyguanosine (8-OHdG) analyses to evaluate the genotoxic damage potential after applications with cHP1-4 on cultured human lymphocytes. Our results revealed that cHP1-4 isomers provide a different degree of neuroprotection against Aβ1-42-induced cell death on the in vitro AD model. The applications with cHP1-4 isomers altered the activity of AChE but not the activity of TACE and BACE1. Our analysis indicated that the cHP1-4 increased the total antioxidant capacity without altering total oxidative status levels in the cellular AD model and that cHP1-4 modulated the alterations of gene expressions by Aβ1-42 exposure. We also observed that cHP1-4 exhibited noncytotoxic and non-genotoxic features in cultured human whole blood cells. In conclusion, cHP1-4 isomers, especially cHP4, have been explored as novel promising therapeutics against AD.
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Affiliation(s)
- Hasan Turkez
- Department of Medical Biology, Faculty of Medicine, Atatürk University, 25240 Erzurum, Turkey
- Correspondence: (H.T.); (A.M.)
| | - Ivana Cacciatore
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, via dei Vestini 31, 66100 Chieti Scalo (CH), Italy; (I.C.); (E.F.); (L.M.); (A.D.S.)
| | - Mehmet Enes Arslan
- Department of Molecular Biology and Genetics, Faculty of Science, Erzurum Technical University, 25050 Erzurum, Turkey;
| | - Erika Fornasari
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, via dei Vestini 31, 66100 Chieti Scalo (CH), Italy; (I.C.); (E.F.); (L.M.); (A.D.S.)
| | - Lisa Marinelli
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, via dei Vestini 31, 66100 Chieti Scalo (CH), Italy; (I.C.); (E.F.); (L.M.); (A.D.S.)
| | - Antonio Di Stefano
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, via dei Vestini 31, 66100 Chieti Scalo (CH), Italy; (I.C.); (E.F.); (L.M.); (A.D.S.)
| | - Adil Mardinoglu
- Science for Life Laboratory, KTH-Royal Institute of Technology, SE-17121 Stockholm, Sweden
- Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King’s College London, London SE1 9RT, UK
- Correspondence: (H.T.); (A.M.)
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46
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Timoumi R, Amara I, Ayed Y, Ben Salem I, Abid-Essefi S. Triflumuron induces genotoxicity in both mice bone marrow cells and human Colon cancer cell line. Toxicol Mech Methods 2020; 30:438-449. [PMID: 32312157 DOI: 10.1080/15376516.2020.1758981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Triflumuron (TFM) is an insect growth regulator (IGR), an insecticide commonly used over the world. It is known for its several toxic manifestations, such as reprotoxicity, immunotoxicity and hematotoxicity, which could affect public health. However, studies that reveal its toxic effects on mammalians are limited. To reach this purpose, our study aimed to elucidate the eventual genotoxic effects of TFM in mice bone marrow cells and in HCT 116 cells after a short term exposition. TFM was administered intraperitoneally to Balb/C male mice at doses of 250, 350 and 500 mg/kg bw for 24 h. Genotoxicity was monitored in bone marrow cells using the comet test, the micronucleus test and the chromosome aberration assay. Our results showed that TFM induced DNA damages in a dose-dependent manner. This genotoxicity was confirmed also in vitro on human intestinal cells HCT 116 using the comet test. It was then asked whether this genotoxicity induced by TFM could be due to an oxidative stress. Thus, we found that TFM significantly decreased HCT 116 cell viability. In addition, it induced the generation of reactive oxygen species (ROS) followed by lipid peroxidation as revealed by the increase in the malondialdehyde (MDA) levels. Similarly, the activation of the antioxidant enzymes (catalase and superoxide dismutase) was also observed. Our results indicated that, in our experimental conditions, TFM had a genotoxic effect on bone morrow cells and in HCT 116 cells. Moreover, we demonstrated that this genotoxicity passes through an oxidative stress.
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Affiliation(s)
- Rim Timoumi
- Faculty of Dental Medicine, Laboratory for Research on Biologically Compatible Compounds (LRSBC), University of Monastir, Monastir, Tunisia.,Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia
| | - Ines Amara
- Faculty of Dental Medicine, Laboratory for Research on Biologically Compatible Compounds (LRSBC), University of Monastir, Monastir, Tunisia.,Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia
| | - Yossra Ayed
- Faculty of Dental Medicine, Laboratory for Research on Biologically Compatible Compounds (LRSBC), University of Monastir, Monastir, Tunisia
| | - Intidhar Ben Salem
- Faculty of Dental Medicine, Laboratory for Research on Biologically Compatible Compounds (LRSBC), University of Monastir, Monastir, Tunisia
| | - Salwa Abid-Essefi
- Faculty of Dental Medicine, Laboratory for Research on Biologically Compatible Compounds (LRSBC), University of Monastir, Monastir, Tunisia
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47
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Sh G, Monfared A S, E Z, A KK, J A, Z A, S B. Changes in the Radiation Toxicity of Human Lymphoblastic T-cell Line (Jurkat) by a Common Pesticide: Diazinon. J Biomed Phys Eng 2020; 10:147-154. [PMID: 32337181 PMCID: PMC7166222 DOI: 10.31661/jbpe.v0i0.715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Accepted: 04/14/2017] [Indexed: 01/08/2023]
Abstract
BACKGROUND Diazinon is one of the most common pesticides in the world playing a similar role to radiation and it could cause DNA breaks and genetic effects. OBJECTIVE In this study, radiosensitivity of a lymphoblastic cell line pretreated by Diazinon was investigated. MATERIAL AND METHODS In this case-control study, the human lymphoblastic T-cell line was divided into 6 groups based on receiving radiation or/and Diazinon. After that, the DNA damage, in all of the groups, were counted by cytokinesis-block micronuclei assay using different indices. RESULTS The mean frequency of micronuclei, nuclear bridges and nuclear buds in cell groups exposed by both Diazinon and radiation were remarkably higher than the other groups which just received radiation or Diazinon alone. The interaction between radiation and Diazinon treatment was statistically significant for NBUDS index. CONCLUSION The results indicated that the Diazinon contamination could affect the radiosensitivity index of cancerous cells while further molecular and in-vivo studies are needed to investigate genetic and toxic effects of Diazinon on DNA and its repair system.
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Affiliation(s)
- Ghasemi Sh
- MSc, Student Research Committee, Babol University of Medical Sciences, Babol, Iran
| | - Shabestani Monfared A
- PhD, Cancer Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
- PhD, Department of Medical Physics Radio-biology and Radiation Protection, Faculty of Medicine, Babol Univer-sity of Medical Sciences, Babol, Iran
| | - Zabihi E
- PhD, Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | | | - Asadi J
- PhD, Biochemistry and Metabolic Disorders Re-search Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Abedian Z
- PhD Candidate, Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medi-cal Sciences, Babol, Iran
| | - Borzoueisileh S
- PhD Candidate, Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medi-cal Sciences, Babol, Iran
- PhD Candidate, Student Research Committee, Babol University of Medical Sciences, Babol, Iran
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48
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Ben Othmène Y, Hamdi H, Annabi E, Amara I, Ben Salem I, Neffati F, Najjar MF, Abid-Essefi S. Tebuconazole induced cardiotoxicity in male adult rat. Food Chem Toxicol 2020; 137:111134. [DOI: 10.1016/j.fct.2020.111134] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 12/22/2019] [Accepted: 01/14/2020] [Indexed: 01/04/2023]
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49
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Laban B, Ralević U, Petrović S, Leskovac A, Vasić-Anićijević D, Marković M, Vasić V. Green synthesis and characterization of nontoxic L-methionine capped silver and gold nanoparticles. J Inorg Biochem 2020; 204:110958. [DOI: 10.1016/j.jinorgbio.2019.110958] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 12/03/2019] [Accepted: 12/08/2019] [Indexed: 12/19/2022]
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50
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Cvetković M, Djordjević I, Jadranin M, Stanković M, Mandić B, Milosavljević S, Vujisić L. Leaf-surface guaianolides from Amphoricarpos neumaeyri showing protective effect on human lymphocytes DNA. Nat Prod Res 2019; 35:3040-3048. [PMID: 31707853 DOI: 10.1080/14786419.2019.1687470] [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: 10/25/2022]
Abstract
Analysis of composition of CH2Cl2 surface extract of leaves of Amphoricarpos neumayeri Vis. revealed 16 sesquiterpene lactones with guaianolide skeleton, so called amphoricarpolides, typical for this genus. Four of them, 13-16, were new derivatives and their structures were elucidated by detailed analyses of IR, NMR and MS data. Amphoricarpolide (9), its 15-O-acetyl derivative (5), and two 9β-hydroxyamphoricarpolides, 3,15-di-O-acetyl- and 3-O-acetyl-15-O-isovaleroyl derivatives (3 and 6, respectively) were tested for in vitro protective effect on chromosome aberrations in peripheral human lymphocytes using cytochalasin-B blocked micronucleus (CBMN) assay. The tested compound exerted a beneficial effect by decreasing DNA damage of human lymphocytes.
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Affiliation(s)
- Mirjana Cvetković
- Institute of Chemistry, Technology and Metallurgy, Center for Chemistry, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
| | - Iris Djordjević
- University of Belgrade - Faculty of Veterinary Medicine, Bulevar oslobođenja 18, 11000 Belgrade, Serbia
| | - Milka Jadranin
- Institute of Chemistry, Technology and Metallurgy, Center for Chemistry, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
| | - Miroslava Stanković
- Nuclear Facilities of Serbia, Mike Petrovića Alasa 12-14, 11351 Vinča, Serbia
| | - Boris Mandić
- University of Belgrade - Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Slobodan Milosavljević
- University of Belgrade - Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia.,Serbian Academy of Sciences and Arts, Knez Mihailova 35, 11000 Belgrade, Serbia
| | - Ljubodrag Vujisić
- University of Belgrade - Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
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