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Alcolea JA, Donat-Vargas C, Chatziioannou AC, Keski-Rahkonen P, Robinot N, Molina AJ, Amiano P, Gómez-Acebo I, Castaño-Vinyals G, Maitre L, Chadeau-Hyam M, Dagnino S, Cheng SL, Scalbert A, Vineis P, Kogevinas M, Villanueva CM. Metabolomic Signatures of Exposure to Nitrate and Trihalomethanes in Drinking Water and Colorectal Cancer Risk in a Spanish Multicentric Study (MCC-Spain). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:19316-19329. [PMID: 37962559 DOI: 10.1021/acs.est.3c05814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
We investigated the metabolomic profile associated with exposure to trihalomethanes (THMs) and nitrate in drinking water and with colorectal cancer risk in 296 cases and 295 controls from the Multi Case-Control Spain project. Untargeted metabolomic analysis was conducted in blood samples using ultrahigh-performance liquid chromatography-quadrupole time-of-flight mass spectrometry. A variety of univariate and multivariate association analyses were conducted after data quality control, normalization, and imputation. Linear regression and partial least-squares analyses were conducted for chloroform, brominated THMs, total THMs, and nitrate among controls and for case-control status, together with a N-integration model discriminating colorectal cancer cases from controls through interrogation of correlations between the exposure variables and the metabolomic features. Results revealed a total of 568 metabolomic features associated with at least one water contaminant or colorectal cancer. Annotated metabolites and pathway analysis suggest a number of pathways as potentially involved in the link between exposure to these water contaminants and colorectal cancer, including nicotinamide, cytochrome P-450, and tyrosine metabolism. These findings provide insights into the underlying biological mechanisms and potential biomarkers associated with water contaminant exposure and colorectal cancer risk. Further research in this area is needed to better understand the causal relationship and the public health implications.
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Affiliation(s)
- Jose A Alcolea
- ISGlobal, c/Dr. Aiguader 88, Barcelona 08003, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Avenida Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid 28029, Spain
- Universitat Pompeu Fabra (UPF), c/Doctor Aiguader 88, Barcelona 08003, Spain
| | - Carolina Donat-Vargas
- ISGlobal, c/Dr. Aiguader 88, Barcelona 08003, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Avenida Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid 28029, Spain
- Universitat Pompeu Fabra (UPF), c/Doctor Aiguader 88, Barcelona 08003, Spain
- Unit of Cardiovascular and Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm 17177, Sweden
| | | | - Pekka Keski-Rahkonen
- International Agency for Research on Cancer, 25 avenue Tony Garnier, CS 90627 69366, Lyon, France
| | - Nivonirina Robinot
- International Agency for Research on Cancer, 25 avenue Tony Garnier, CS 90627 69366, Lyon, France
| | - Antonio José Molina
- Research Group in Gene - Environment and Health Interactions (GIIGAS)/Institute of Biomedicine (IBIOMED), Universidad de León, Campus Universitario de Vegazana, León 24071, Spain
- Faculty of Health Sciences, Department of Biomedical Sciences, Area of Preventive Medicine and Public Health, Universidad de León, Campus Universitario de Vegazana, León 24071, Spain
| | - Pilar Amiano
- CIBER Epidemiología y Salud Pública (CIBERESP), Avenida Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid 28029, Spain
- Ministry of Health of the Basque Government, Sub Directorate for Public Health and Addictions of Gipuzkoa; BioGipuzkoa (BioDonostia) Health Research Institute, San Sebastián 20013, Spain
| | - Inés Gómez-Acebo
- CIBER Epidemiología y Salud Pública (CIBERESP), Avenida Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid 28029, Spain
- Universidad de Cantabria-IDIVAL, Avenida Cardenal Herrera Oria S/N, Santander 39011, Spain
| | - Gemma Castaño-Vinyals
- ISGlobal, c/Dr. Aiguader 88, Barcelona 08003, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Avenida Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid 28029, Spain
- Universitat Pompeu Fabra (UPF), c/Doctor Aiguader 88, Barcelona 08003, Spain
- IMIM (Hospital del Mar Medical Research Institute), c/Doctor Aiguader 88, Barcelona 08003, Spain
| | - Lea Maitre
- ISGlobal, c/Dr. Aiguader 88, Barcelona 08003, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Avenida Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid 28029, Spain
- Universitat Pompeu Fabra (UPF), c/Doctor Aiguader 88, Barcelona 08003, Spain
| | - Marc Chadeau-Hyam
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, United Kingdom
| | - Sonia Dagnino
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, United Kingdom
- Transporters in Imaging and Radiotherapy in Oncology (TIRO), School of Medicine, Direction de la Recherche Fondamentale (DRF), Institut des Sciences du Vivant Frédéric Joliot, Commissariat à l'Energie Atomique et aux Énergies Alternatives (CEA), Université Côte d'Azur (UCA), 28 Avenue de Valombrose, Nice 06107, France
| | - Sibo Lucas Cheng
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, United Kingdom
| | - Augustin Scalbert
- International Agency for Research on Cancer, 25 avenue Tony Garnier, CS 90627 69366, Lyon, France
| | - Paolo Vineis
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, Norfolk Place, London W2 1PG, United Kingdom
| | - Manolis Kogevinas
- ISGlobal, c/Dr. Aiguader 88, Barcelona 08003, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Avenida Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid 28029, Spain
- Universitat Pompeu Fabra (UPF), c/Doctor Aiguader 88, Barcelona 08003, Spain
- IMIM (Hospital del Mar Medical Research Institute), c/Doctor Aiguader 88, Barcelona 08003, Spain
| | - Cristina M Villanueva
- ISGlobal, c/Dr. Aiguader 88, Barcelona 08003, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Avenida Monforte de Lemos, 3-5, Pabellón 11, Planta 0, Madrid 28029, Spain
- Universitat Pompeu Fabra (UPF), c/Doctor Aiguader 88, Barcelona 08003, Spain
- IMIM (Hospital del Mar Medical Research Institute), c/Doctor Aiguader 88, Barcelona 08003, Spain
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Daylan AEC, Miao E, Tang K, Chiu G, Cheng H. Lung Cancer in Never Smokers: Delving into Epidemiology, Genomic and Immune Landscape, Prognosis, Treatment, and Screening. Lung 2023; 201:521-529. [PMID: 37973682 DOI: 10.1007/s00408-023-00661-3] [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: 11/10/2023] [Accepted: 11/11/2023] [Indexed: 11/19/2023]
Abstract
Lung cancer in never smokers (LCINS) represents a growing and distinct entity within the broader landscape of lung malignancies. This review provides a comprehensive overview of LCINS, encompassing its epidemiologic trends, risk factors, distinct genomic alterations, clinical outcomes and the ongoing initiative aimed at formulating screening guidelines tailored to this unique population. As LCINS continues to gain prominence, understanding its intricate genomic landscape has become pivotal for tailoring effective therapeutic strategies. Moreover, LCINS does not meet the criteria for lung cancer screening as per the current guidelines. Hence, there is an urgent need to explore its heterogeneity in order to devise optimal screening guidelines conducive to early-stage detection. This review underscores the vital importance of detailed research to elucidate the multifaceted nature of LCINS, with the potential to shape future clinical management and screening recommendations for this unique and growing patient cohort.
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Affiliation(s)
- Ayse Ece Cali Daylan
- Department of Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Emily Miao
- Department of Medicine, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
| | - Kevin Tang
- Department of Medicine, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
| | - Grace Chiu
- Scarsdale High School, Scarsdale, NY, USA
| | - Haiying Cheng
- Department of Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
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3
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Tanaka T, Aoki R, Terasaki M. Potential Chemopreventive Effects of Dietary Combination of Phytochemicals against Cancer Development. Pharmaceuticals (Basel) 2023; 16:1591. [PMID: 38004456 PMCID: PMC10674766 DOI: 10.3390/ph16111591] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/01/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
Cancer remains a major cause of cancer-related death worldwide. Over 70% of epithelial malignancies are sporadic and are related to lifestyle. Epidemiological studies suggest an inverse correlation between cancer incidence and fruit and vegetable intake. Numerous preclinical studies using in vitro (cell lines) and in vivo animal models of oncogenesis have reported the chemopreventive effects of dietary phytochemical agents through alterations in different biomarkers and signaling pathways. However, there is contrasting evidence from preclinical studies and clinical trials. To date, the most studied compounds include curcumin, resveratrol, isoflavones, green tea extract (epigallocatechin gallate), black raspberry powder (anthocyanins and ellagitannins), bilberry extract (anthocyanins), ginger extract (gingerol derivatives), and pomegranate extract (ellagitannins and ellagic acid). Overall, the clinical evidence of the preventive effects of dietary phytochemicals against cancer development is still weak, and the amount of these phytochemicals needed to exert chemopreventive effects largely exceeds the common dietary doses. Therefore, we propose a combination treatment of natural compounds that are used clinically for another purpose in order to obtain excess inhibitory efficacy via low-dose administration and discuss the possible reasons behind the gap between preclinical research and clinical trials.
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Affiliation(s)
- Takuji Tanaka
- Department of Diagnostic Pathology, Gifu Municipal Hospital, 7-1 Kashima-cho, Gifu 500-8513, Japan;
| | - Ryogo Aoki
- Department of Diagnostic Pathology, Gifu Municipal Hospital, 7-1 Kashima-cho, Gifu 500-8513, Japan;
| | - Masaru Terasaki
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757 Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan;
- Advanced Research Promotion Center, Health Sciences University of Hokkaido, 1757 Kanazawa, Ishikari-Tobetsu, Hokkaido 061-0293, Japan
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4
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Habil MR, Salazar-González RA, Doll MA, Hein DW. N-acetyltransferase 2 acetylator genotype-dependent N-acetylation and toxicity of the arylamine carcinogen β-naphthylamine in cryopreserved human hepatocytes. Arch Toxicol 2022; 96:3257-3263. [PMID: 36112171 PMCID: PMC9641657 DOI: 10.1007/s00204-022-03381-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 09/08/2022] [Indexed: 11/02/2022]
Abstract
We used cryopreserved human hepatocytes that express rapid, intermediate, and slow acetylator N-acetyltransferase 2 (NAT2) genotypes to measure the N-acetylation of β-naphthylamine (BNA) which is one of the aromatic amines found in cigarette smoke including E-cigarettes. We investigated the role of NAT2 genetic polymorphism in genotoxicity and oxidative stress induced by BNA. In vitro BNA NAT2 activities in rapid acetylators was 1.6 and 3.5-fold higher than intermediate (p < 0.01) and slow acetylators (p < 0.0001). BNA N-acetylation in situ was 3 to 4- fold higher in rapid acetylators than slow acetylators, following incubation with 10 and 100 µM BNA (p < 0.01). DNA damage was two to threefold higher in the rapid versus slow acetylators (p < 0.0001) and 2.5-fold higher in intermediate versus slow acetylators following BNA treatment at 100 and 1000 μM, ROS/RNS level was the highest in rapid acetylators followed by intermediate and then slow acetylators (p < 0.0001). Our findings show that the N-acetylation of BNA is NAT2 genotype dependent in cryopreserved human hepatocytes and our data further document an important role for NAT2 genetic polymorphism in modifying BNA-induced genotoxicity and oxidative damage.
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Affiliation(s)
- Mariam R Habil
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, 505 S. Hancock Street, CTR Rm 303, Louisville, KY, 40202, USA
| | - Raúl A Salazar-González
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, 505 S. Hancock Street, CTR Rm 303, Louisville, KY, 40202, USA
| | - Mark A Doll
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, 505 S. Hancock Street, CTR Rm 303, Louisville, KY, 40202, USA
| | - David W Hein
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, 505 S. Hancock Street, CTR Rm 303, Louisville, KY, 40202, USA.
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5
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Wang J, Xia B. Effects of chromium (VI) on the toxicity of benzo[z]pyrene in 16HBE cells. Toxicol Ind Health 2022; 38:733-744. [DOI: 10.1177/07482337221127095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Contamination of human habitats with complex mixtures of heavy metals and polycyclic aromatic hydrocarbons (PAHs) is an important environmental and industrial health problem. Hexavalent chromium (Cr(VI)) and benzo(a)pyrene (B[a] P) are typical of the two, respectively. In recent decades, a great deal of research has focused on their carcinogenicity and mechanisms of action. However, few studies have been conducted to evaluate their combined effects on humans and cells, which has important implications for overall understanding of their toxicity and interaction. In the current study, the combined toxic effects of B[a] P and Cr(VI) were studied in human bronchial epithelial cells (16 HBE). We measured the genotoxic activity and epigenetic changes of these two toxicants alone and in combination on these cells and analyzed the difference between their single and combined toxicity. The results showed that B[a]P caused DNA damage in 16HBE cells in a concentration-dependent manner, while the presence of Cr(VI) showed a sharp decrease in DNA damage, and it inhibited the expression of genes related to base excision repair induced by B[a]P. In addition, Cr(VI) also reduced B[a]P-triggered epigenetic changes in 16HBE cells. In conclusion, the combined effect of B[a]P and Cr(VI) on 16HBE cells was less toxic than single B[a]P exposure, indicating that the combined toxicity of the two toxicants is partially antagonistic. Further research is required to explore the mechanism of this antagonism.
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Affiliation(s)
- Jialin Wang
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
| | - Bo Xia
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
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6
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Garcia WL, Miller CJ, Lomas GX, Gaither KA, Tyrrell KJ, Smith JN, Brandvold KR, Wright AT. Profiling How the Gut Microbiome Modulates Host Xenobiotic Metabolism in Response to Benzo[ a]pyrene and 1-Nitropyrene Exposure. Chem Res Toxicol 2022; 35:585-596. [PMID: 35347982 PMCID: PMC9878584 DOI: 10.1021/acs.chemrestox.1c00360] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The gut microbiome is a key contributor to xenobiotic metabolism. Polycyclic aromatic hydrocarbons (PAHs) are an abundant class of environmental contaminants that have varying levels of carcinogenicity depending on their individual structures. Little is known about how the gut microbiome affects the rates of PAH metabolism. This study sought to determine the role that the gut microbiome has in determining the various aspects of metabolism in the liver, before and after exposure to two structurally different PAHs, benzo[a]pyrene and 1-nitropyrene. Following exposures, the metabolic rates of PAH metabolism were measured, and activity-based protein profiling was performed. We observed differences in PAH metabolism rates between germ-free and conventional mice under both unexposed and exposed conditions. Our activity-based protein profiling (ABPP) analysis showed that, under unexposed conditions, there were only minor differences in total P450 activity in germ-free mice relative to conventional mice. However, we observed distinct activity profiles in response to corn oil vehicle and PAH treatment, primarily in the case of 1-NP treatment. This study revealed that the repertoire of active P450s in the liver is impacted by the presence of the gut microbiome, which modifies PAH metabolism in a substrate-specific fashion.
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Affiliation(s)
- Whitney L. Garcia
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA),Biological Systems Engineering Department, CAHNRS, Washington State University, Pullman, WA 99163 (USA)
| | - Carson J. Miller
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA)
| | - Gerard X. Lomas
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA)
| | - Kari A. Gaither
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA)
| | - Kimberly J. Tyrrell
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA)
| | - Jordan N. Smith
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA),Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331 (USA)
| | - Kristoffer R. Brandvold
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA),Elson S. Floyd College of Medicine, Washington State University, Spokane, WA 99202 (USA),Corresponding Authors: Kristoffer R. Brandvold - Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA); , Aaron T. Wright - Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA);
| | - Aaron T. Wright
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA),The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99163 (USA),Corresponding Authors: Kristoffer R. Brandvold - Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA); , Aaron T. Wright - Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352 (USA);
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Tang MS, Lee HW, Weng MW, Wang HT, Hu Y, Chen LC, Park SH, Chan HW, Xu J, Wu XR, Wang H, Yang R, Galdane K, Jackson K, Chu A, Halzack E. DNA damage, DNA repair and carcinogenicity: Tobacco smoke versus electronic cigarette aerosol. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2022; 789:108409. [PMID: 35690412 PMCID: PMC9208310 DOI: 10.1016/j.mrrev.2021.108409] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 12/06/2021] [Accepted: 12/13/2021] [Indexed: 01/03/2023]
Abstract
The allure of tobacco smoking is linked to the instant gratification provided by inhaled nicotine. Unfortunately, tobacco curing and burning generates many mutagens including more than 70 carcinogens. There are two types of mutagens and carcinogens in tobacco smoke (TS): direct DNA damaging carcinogens and procarcinogens, which require metabolic activation to become DNA damaging. Recent studies provide three new insights on TS-induced DNA damage. First, two major types of TS DNA damage are induced by direct carcinogen aldehydes, cyclic-1,N2-hydroxy-deoxyguanosine (γ-OH-PdG) and α-methyl-1, N2-γ-OH-PdG, rather than by the procarcinogens, polycyclic aromatic hydrocarbons and aromatic amines. Second, TS reduces DNA repair proteins and activity levels. TS aldehydes also prevent procarcinogen activation. Based on these findings, we propose that aldehydes are major sources of TS induce DNA damage and a driving force for carcinogenesis. E-cigarettes (E-cigs) are designed to deliver nicotine in an aerosol state, without burning tobacco. E-cigarette aerosols (ECAs) contain nicotine, propylene glycol and vegetable glycerin. ECAs induce O6-methyl-deoxyguanosines (O6-medG) and cyclic γ-hydroxy-1,N2--propano-dG (γ-OH-PdG) in mouse lung, heart and bladder tissues and causes a reduction of DNA repair proteins and activity in lungs. Nicotine and nicotine-derived nitrosamine ketone (NNK) induce the same types of DNA adducts and cause DNA repair inhibition in human cells. After long-term exposure, ECAs induce lung adenocarcinoma and bladder urothelial hyperplasia in mice. We propose that E-cig nicotine can be nitrosated in mouse and human cells becoming nitrosamines, thereby causing two carcinogenic effects, induction of DNA damage and inhibition of DNA repair, and that ECA is carcinogenic in mice. Thus, this article reviews the newest literature on DNA adducts and DNA repair inhibition induced by nicotine and ECAs in mice and cultured human cells, and provides insights into ECA carcinogenicity in mice.
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Affiliation(s)
- Moon-Shong Tang
- Department of Environmental Medicine, Pathology and Medicine, United States.
| | - Hyun-Wook Lee
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Mao-Wen Weng
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Hsiang-Tsui Wang
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Yu Hu
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Lung-Chi Chen
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Sung-Hyun Park
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Huei-Wei Chan
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Jiheng Xu
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Xue-Ru Wu
- Departmemt of Urology, New York University School of Medicine, New York, NY10016, United States
| | - He Wang
- Department of Pathology and Laboratory Medicine, Robert Wood Johnson MedicalSchool, Rutgers University, Piscataway, NJ 08854, United States
| | - Rui Yang
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Karen Galdane
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Kathryn Jackson
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Annie Chu
- Department of Environmental Medicine, Pathology and Medicine, United States
| | - Elizabeth Halzack
- Department of Environmental Medicine, Pathology and Medicine, United States
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Losch EL, Zanatta CB, Barros GPD, Gaia MCDM, Bricarello PA. Os agrotóxicos no contexto da Saúde Única. SAÚDE EM DEBATE 2022. [DOI: 10.1590/0103-11042022e229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RESUMO A industrialização da agricultura e da pecuária, além de gerar um ambiente propício à disseminação de agentes infecciosos, é responsável pelo uso generalizado de diversas substâncias tóxicas que afetam a saúde humana, animal e ambiental. O objetivo deste estudo foi promover a reflexão sobre o uso de agrotóxicos e medicamentos veterinários como elementos de debate na construção da Saúde Única. Para isso, foi realizada uma revisão exploratória literária de artigos, livros e documentos oficiais disponíveis em plataformas de banco de dados. A discussão inclui as problemáticas do uso de substâncias tóxicas em plantas e animais. Aborda, também, como os resíduos oriundos de sua utilização impactam a qualidade de alimentos, ar, solo, água com consequências à saúde humana. Embora essa discussão seja escassa na temática de Saúde Única, é fundamental que, além da participação da sociedade civil organizada, gestores públicos assegurem, por meio de políticas públicas, maior segurança e controle na utilização de substâncias tóxicas na agricultura e na pecuária.
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Zmorzynski S, Wojcierowska-Litwin M, Popek-Marciniec S, Szudy-Szczyrek A, Styk W, Chocholska S, Filip AA. The Relationship of ABCB1/MDR1 and CYP1A1 Variants with the Risk of Disease Development and Shortening of Overall Survival in Patients with Multiple Myeloma. J Clin Med 2021; 10:5276. [PMID: 34830558 PMCID: PMC8618341 DOI: 10.3390/jcm10225276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/05/2021] [Accepted: 11/09/2021] [Indexed: 12/24/2022] Open
Abstract
(1) Background: The aim of our study was to analyze the possible relationship of ABCB1 and CYP1A1 gene variants with susceptibility and outcome of multiple myeloma (MM); (2) Methods: Genomic DNA samples from 110 newly-diagnosed MM patients and 100 healthy blood donors were analyzed by methods-PCR-RFLP (for ABCB1 3435C > T, CYP1A1 6235T > C-m1), automated DNA sequencing (for ABCB1 1236C > T, 2677G > T/A) and allele-specific PCR (for CYP1A1 4889A > G-m2); (3) Results: The genotypic frequencies of CYP1A1 4889A > G variant were not in Hardy-Weinberg equilibrium for MM patients. The presence of m1 and m2 CYP1A1 alleles decreased the risk of MM-OR = 0.49 (p = 0.011) and OR = 0.27 (p = 0.0003), respectively. In turn, TT genotype (ABCB1 2677G > T/A) increased the risk of this disease (p = 0.007). In the multivariate Cox analysis CT + TT genotypes (ABCB1 3435C > T) were associated with decreased risk of death (HR = 0.29, p = 0.04). In log-rank test in patients with CT genotype (ABCB1 3435C > T) was observed association of overall survival with the type of treatment; (4) Conclusions: Our findings suggest that T-alleles of ABCB1 2677G > T/A and m1/m2 alleles of CYP1A1 affected the susceptibility of MM. Moreover, T-allele of ABCB1 3435C > T might be independent positive prognostic factor in MM.
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Affiliation(s)
- Szymon Zmorzynski
- Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, 20-059 Lublin, Poland; (M.W.-L.); (S.P.-M.); (A.A.F.)
| | - Magdalena Wojcierowska-Litwin
- Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, 20-059 Lublin, Poland; (M.W.-L.); (S.P.-M.); (A.A.F.)
| | - Sylwia Popek-Marciniec
- Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, 20-059 Lublin, Poland; (M.W.-L.); (S.P.-M.); (A.A.F.)
| | - Aneta Szudy-Szczyrek
- Chair and Department of Hematooncology and Bone Marrow Transplantation, Medical University of Lublin, 20-059 Lublin, Poland; (A.S.-S.); (S.C.)
| | - Wojciech Styk
- Department of Psychology, Institute of Pedagogy and Psychology, Warsaw Management University, 03-772 Warsaw, Poland;
| | - Sylwia Chocholska
- Chair and Department of Hematooncology and Bone Marrow Transplantation, Medical University of Lublin, 20-059 Lublin, Poland; (A.S.-S.); (S.C.)
| | - Agata Anna Filip
- Department of Cancer Genetics with Cytogenetic Laboratory, Medical University of Lublin, 20-059 Lublin, Poland; (M.W.-L.); (S.P.-M.); (A.A.F.)
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Li X, Wu Q, Zhou B, Liu Y, Lv J, Chang Q, Zhao Y. Umbrella Review on Associations Between Single Nucleotide Polymorphisms and Lung Cancer Risk. Front Mol Biosci 2021; 8:687105. [PMID: 34540891 PMCID: PMC8446528 DOI: 10.3389/fmolb.2021.687105] [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: 03/29/2021] [Accepted: 08/18/2021] [Indexed: 12/03/2022] Open
Abstract
The aim is to comprehensively and accurately assess potential relationships between single nucleotide polymorphisms (SNP) and lung cancer (LC) risk by summarizing the evidence in systematic reviews and meta-analyses. This umbrella review was registered with the PROSPERO international prospective register of systematic reviews under registration number CRD42020204685. The PubMed, Web of Science, and Embase databases were searched to identify eligible systematic reviews and meta-analyses from inception to August 14, 2020. The evaluation of cumulative evidence was conducted for associations with nominally statistical significance based on the Venice criteria and false positive report probability (FPRP). This umbrella review finally included 120 articles of a total of 190 SNP. The median number of studies and sample size included in the meta-analyses were five (range, 3–52) and 4 389 (range, 354–256 490), respectively. A total of 85 SNP (in 218 genetic models) were nominally statistically associated with LC risk. Based on the Venice criteria and FPRP, 13 SNP (in 22 genetic models), 47 SNP (in 99 genetic models), and 55 SNP (in 94 genetic models) had strong, moderate, and weak cumulative evidence of associations with LC risk, respectively. In conclusion, this umbrella review indicated that only 13 SNP (of 11 genes and one miRNA) were strongly correlated to LC risk. These findings can serve as a general and helpful reference for further genetic studies.
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Affiliation(s)
- Xiaoying Li
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qijun Wu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Baosen Zhou
- Department of Clinical Epidemiology, First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yashu Liu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jiale Lv
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qing Chang
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yuhong Zhao
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
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11
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Sengupta D, Banerjee S, Mukhopadhyay P, Mitra R, Chaudhuri T, Sarkar A, Bhattacharjee G, Nath S, Roychoudhury S, Bhattacharjee S, Sengupta M. A comprehensive meta-analysis and a case-control study give insights into genetic susceptibility of lung cancer and subgroups. Sci Rep 2021; 11:14572. [PMID: 34272429 PMCID: PMC8285487 DOI: 10.1038/s41598-021-92275-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 06/08/2021] [Indexed: 12/17/2022] Open
Abstract
Reports of genetic association of polymorphisms with lung cancer in the Indian subcontinent are often conflicting. To summarise and replicate published evidence for association with lung cancer and its subgroups. We performed a meta-analysis of candidate associations on lung cancer, its histological subtypes and smoking status in the Indian subcontinent following PRISMA guidelines. Multiple testing corrections were done by the Benjamini-Hochberg method through assessment of significance at a false discovery rate of 10%. We genotyped and investigated rs1048943/CYP1A1 in a case-control sample from eastern India, followed by its global meta-analysis using a similar protocol. Meta-analysis of 18 variants of 11 genes reported in 39 studies (7630 cases and 8169 controls) showed significant association of rs1048943/CYP1A1 [2.07(1.49-2.87)] and rs4646903/CYP1A1 [1.48(1.93-1.95)] with overall lung cancer risk at 10% FDR, while nominal association (p < 0.05) was observed for del1/GSTT1, del2/GSTM1, rs1695/GSTP1 and rs17037102/ DKK2. Subtype analysis showed a significant association of del1/GSTT1 with adenocarcinoma, rs4646903/CYP1A1 with squamous carcinoma, and rs1048943/CYP1A1 with both. Association of rs4646903/CYP1A1 in smokers and effect modification by meta-regression analysis was observed. Genotyping of rs1048943/CYP1A1 that presented significant heterogeneity (p < 0.1) revealed an association with adenocarcinoma among eastern Indian smokers, while a global meta-analysis in 10458 cases and 10871 controls showed association with lung cancer and its subgroups. This study identified the susceptibility loci for lung cancer and its covariate-subgroups.
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Affiliation(s)
- Debmalya Sengupta
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Souradeep Banerjee
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Pramiti Mukhopadhyay
- Greehey Children's Cancer Research Institute, UT Health San Antonio, 8403 Floyd Curl Dr., San Antonio, TX-78229, USA
| | - Ritabrata Mitra
- Department of CHEST, IPGME&R, 244 A.J.C. Bose Road, Kolkata, 700020, India
| | - Tamohan Chaudhuri
- Saroj Gupta Cancer Centre and Research Institute, Mahatma Gandhi Road, Thakurpukur, Kolkata, 700063, India
| | - Abhijit Sarkar
- Saroj Gupta Cancer Centre and Research Institute, Mahatma Gandhi Road, Thakurpukur, Kolkata, 700063, India
| | - Gautam Bhattacharjee
- Saroj Gupta Cancer Centre and Research Institute, Mahatma Gandhi Road, Thakurpukur, Kolkata, 700063, India
| | - Somsubhra Nath
- Saroj Gupta Cancer Centre and Research Institute, Mahatma Gandhi Road, Thakurpukur, Kolkata, 700063, India
| | - Susanta Roychoudhury
- CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700032, India
| | - Samsiddhi Bhattacharjee
- National Institute of Biomedical Genomics, Near Netaji Subhas Sanatorium Post Office, Kalyani, West Bengal, 741251, India.
| | - Mainak Sengupta
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
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12
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Human Family 1-4 cytochrome P450 enzymes involved in the metabolic activation of xenobiotic and physiological chemicals: an update. Arch Toxicol 2021; 95:395-472. [PMID: 33459808 DOI: 10.1007/s00204-020-02971-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 12/29/2020] [Indexed: 12/17/2022]
Abstract
This is an overview of the metabolic activation of drugs, natural products, physiological compounds, and general chemicals by the catalytic activity of cytochrome P450 enzymes belonging to Families 1-4. The data were collected from > 5152 references. The total number of data entries of reactions catalyzed by P450s Families 1-4 was 7696 of which 1121 (~ 15%) were defined as bioactivation reactions of different degrees. The data were divided into groups of General Chemicals, Drugs, Natural Products, and Physiological Compounds, presented in tabular form. The metabolism and bioactivation of selected examples of each group are discussed. In most of the cases, the metabolites are directly toxic chemicals reacting with cell macromolecules, but in some cases the metabolites formed are not direct toxicants but participate as substrates in succeeding metabolic reactions (e.g., conjugation reactions), the products of which are final toxicants. We identified a high level of activation for three groups of compounds (General Chemicals, Drugs, and Natural Products) yielding activated metabolites and the generally low participation of Physiological Compounds in bioactivation reactions. In the group of General Chemicals, P450 enzymes 1A1, 1A2, and 1B1 dominate in the formation of activated metabolites. Drugs are mostly activated by the enzyme P450 3A4, and Natural Products by P450s 1A2, 2E1, and 3A4. Physiological Compounds showed no clearly dominant enzyme, but the highest numbers of activations are attributed to P450 1A, 1B1, and 3A enzymes. The results thus show, perhaps not surprisingly, that Physiological Compounds are infrequent substrates in bioactivation reactions catalyzed by P450 enzyme Families 1-4, with the exception of estrogens and arachidonic acid. The results thus provide information on the enzymes that activate specific groups of chemicals to toxic metabolites.
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13
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Kim Y, Kim JH, Lee T, Bae JS, Jeong TC, Lee ES, Lee S. Selective inhibitory effects of HYIpro-3-1 on CYP1A2 in human liver microsomes. Biopharm Drug Dispos 2021; 42:35-41. [PMID: 33386627 DOI: 10.1002/bdd.2259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 12/06/2020] [Accepted: 12/17/2020] [Indexed: 11/07/2022]
Abstract
CYP1A2 is one of the main Cytochrome P450 enzymes in the human liver associated with the metabolism of several xenobiotics. CYP1A2 is especially involved in the metabolic activation of different procarcinogens. Therefore, the development of cancer may be inhibited by inhibiting CYP1A2 activity. Here, the inhibitory effect of HYIpro-3-1 and its derivatives on CYP1A2 activity in human liver microsomes (HLM) was studied through LC-MS/MS using a cocktail assay. Among the four compounds, HYIpro-3-1 showed the most selective and strongest inhibitory effect on CYP1A2 at IC50 values of 0.1 µM in HLMs and inhibition was confirmed using purified human CYP1A2. It was determined that inhibition is reversible because the inhibitory effect of HYIpro-3-1 is not dependent on preincubation time. HYIpro-3-1 showed a typical pattern of competitive inhibition for CYP1A2-catalyzed phenacetin O-deethylation, based on the Lineweaver-Burk plot, with a Ki value of 0.05 μM in HLMs; the secondary plot also showed a linear pattern. In our study, HYIpro-3-1 was proposed as a novel inhibitor with the capacity to selectively inhibit CYP1A activity in HLMs.
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Affiliation(s)
- Younah Kim
- BK21 FOUR Community-Based Intelligent Novel Drug Discovery Education Unit, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Ju-Hyun Kim
- College of Pharmacy, Yeungnam University, Gyeongsan, Republic of Korea
| | - Taeho Lee
- BK21 FOUR Community-Based Intelligent Novel Drug Discovery Education Unit, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jong-Sup Bae
- BK21 FOUR Community-Based Intelligent Novel Drug Discovery Education Unit, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Tae Cheon Jeong
- College of Pharmacy, Yeungnam University, Gyeongsan, Republic of Korea
| | - Eung Seok Lee
- College of Pharmacy, Yeungnam University, Gyeongsan, Republic of Korea
| | - Sangkyu Lee
- BK21 FOUR Community-Based Intelligent Novel Drug Discovery Education Unit, College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
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14
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Interaction of Thalassia testudinum Metabolites with Cytochrome P450 Enzymes and Its Effects on Benzo(a)pyrene-Induced Mutagenicity. Mar Drugs 2020; 18:md18110566. [PMID: 33227946 PMCID: PMC7699293 DOI: 10.3390/md18110566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/15/2020] [Accepted: 11/17/2020] [Indexed: 02/06/2023] Open
Abstract
The aim of the present work was to evaluate the effects of Thalassia testudinum hydroethanolic extract, its polyphenolic fraction and thalassiolin B on the activity of phase I metabolizing enzymes as well as their antimutagenic effects. Spectrofluorometric techniques were used to evaluate the effect of tested products on rat and human CYP1A and CYP2B activity. The antimutagenic effect of tested products was evaluated in benzo[a]pyrene (BP)-induced mutagenicity assay by an Ames test. Finally, the antimutagenic effect of Thalassia testudinum (100 mg/kg) was assessed in BP-induced mutagenesis in mice. The tested products significantly (p < 0.05) inhibit rat CYP1A1 activity, acting as mixed-type inhibitors of rat CYP1A1 (Ki = 54.16 ± 9.09 μg/mL, 5.96 ± 1.55 μg/mL and 3.05 ± 0.89 μg/mL, respectively). Inhibition of human CYP1A1 was also observed (Ki = 197.1 ± 63.40 μg/mL and 203.10 ± 17.29 μg/mL for the polyphenolic fraction and for thalassiolin B, respectively). In addition, the evaluated products significantly inhibit (p < 0.05) BP-induced mutagenicity in vitro. Furthermore, oral doses of Thalassia testudinum (100 mg/kg) significantly reduced (p < 0.05) the BP-induced micronuclei and oxidative damage, together with an increase of reduced glutathione, in mice. In summary, Thalassia testudinum metabolites exhibit antigenotoxic activity mediated, at least, by the inhibition of CYP1A1-mediated BP biotransformation, arresting the oxidative and mutagenic damage. Thus, the metabolites of T. testudinum may represent a potential source of chemopreventive compounds for the adjuvant therapy of cancer.
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15
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Johani FH, Majid MSA, Azme MH, Nawi AM. Cytochrome P450 2A6 whole-gene deletion (CYP2A6*4) polymorphism reduces risk of lung cancer: A meta-analysis. Tob Induc Dis 2020; 18:50. [PMID: 32547353 PMCID: PMC7291960 DOI: 10.18332/tid/122465] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 05/15/2020] [Accepted: 05/15/2020] [Indexed: 01/08/2023] Open
Abstract
INTRODUCTION Lung cancer is the most commonly diagnosed cancer worldwide and is the leading cause of cancer death. Smoking is a major contributor to the pathogenesis of lung cancer. Cytochrome P450 2A6 (CYP2A6) is responsible for the metabolic activation of most tobacco carcinogens. CYP2A6 genetic polymorphism can cause variations in the human metabolism of xenobiotics. We performed this meta-analysis to determine the association between whole-gene CYP2A6 deletion polymorphism (CYP2A6*4) and lung cancer risk. METHODS The PubMed, SAGE, Science Direct, the Cochrane Library and Ovid databases were searched for observational studies before October 2018. Methodological quality was assessed using the Newcastle-Ottawa Quality Assessment Scale (NOS). RESULTS Nine case-control studies involving 4385 lung cancer cases and 4142 controls were included in the analysis. The random-effects model was used to combine results from individual studies. The pooled odds ratio was 0.39 (95% CI: 0.27-0.56). There was no heterogeneity across studies (χ2=2.49, p=0.96, I2=0%). CONCLUSIONS Current evidence from the case-control studies suggests that the CYP2A6 whole-gene deletion polymorphism decreases the risk of lung cancer. Further research is needed to identify any potential confounding factors that may impact this association.
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Affiliation(s)
- Fadzrul H. Johani
- Department of Community Health, Faculty of Medicine, University Kebangsaan Malaysia, Cheras, Malaysia
| | - Mohd S. A. Majid
- Department of Community Health, Faculty of Medicine, University Kebangsaan Malaysia, Cheras, Malaysia
| | - Muhammad H. Azme
- Department of Community Health, Faculty of Medicine, University Kebangsaan Malaysia, Cheras, Malaysia
| | - Azmawati M. Nawi
- Department of Community Health, Faculty of Medicine, University Kebangsaan Malaysia, Cheras, Malaysia
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16
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Rhon Calderón EA, Galarza RA, Faletti AG. 3-Methylcholanthrene impacts on the female germ cells of rats without causing systemic toxicity. Toxicology 2020; 429:152328. [DOI: 10.1016/j.tox.2019.152328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 09/16/2019] [Accepted: 10/31/2019] [Indexed: 12/31/2022]
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17
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Gouveia MJ, Brindley PJ, Rinaldi G, Gärtner F, da Costa JMC, Vale N. Infection with carcinogenic helminth parasites and its production of metabolites induces the formation of DNA-adducts. Infect Agent Cancer 2019; 14:41. [PMID: 31798678 PMCID: PMC6884881 DOI: 10.1186/s13027-019-0257-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 10/28/2019] [Indexed: 01/12/2023] Open
Abstract
Background Infections classified as group 1 biological carcinogens include the helminthiases caused by Schistosoma haematobium and Opisthorchis viverrini. The molecular mediators underlying the infection with these parasites and cancer remain unclear. Although carcinogenesis is a multistep process, we have postulated that these parasites release metabolites including oxysterols and estrogen-like metabolites that interact with host cell DNA. How and why the parasite produce/excrete these metabolites remain unclear. A gene encoding a CYP enzyme was identified in schistosomes and opisthorchiids. Therefore, it is reasonable hypothesized that CYP 450 might play a role in generation of pro-inflammatory and potentially carcinogenic compounds produced by helminth parasites such as oxysterols and catechol estrogens. Here, we performed enzymatic assays using several isoforms of CYP 450 as CYP1A1, 2E1 and 3A4 which are involved in the metabolism of chemical carcinogens that have been associated with several cancer. The main aim was the analysis of the role of these enzymes in production of helminth-associated metabolites and DNA-adducts. Method The effect of cytochrome P450 enzymes CYP 1A1, 2E1 and 3A4 during the interaction between DNA, glycocholic acid and taurochenodeoxycholate sodium on the formation of DNA-adducts and metabolites associated with urogenital schistosomiasis (UGS) and opisthorchiasis was investigated in vitro. Liquid chromatography/mass spectrometry was used to detect and identify metabolites. Main findings Through the enzymatic assays we provide a deeper understanding of how metabolites derived from helminths are formed and the influence of CYP 450. The assays using compounds similar to those previously observed in helminths as glycocholic acid and taurochenodeoxycholate sodium, allowed the detection of metabolites in their oxidized form and their with DNA. Remarkably, these metabolites were previously associated with schistosomiaisis and opisthorchiasis. Thus, in the future, it may be possible to synthesize this type of metabolites through this methodology and use them in cell lines to clarify the carcinogenesis process associated with these diseases. Principal conclusions Metabolites similar to those detected in helminths are able to interact with DNA in vitro leading to the formation of DNA adducts. These evidences supported the previous postulate that imply helminth-like metabolites as initiators of helminthiases-associated carcinogenesis. Nonetheless, studies including these kinds of metabolites and cell lines in order to evaluate its potential carcinogenic are required.
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Affiliation(s)
- Maria João Gouveia
- 1Center for the Study of Animal Science, CECA-ICETA, University of Porto, Praça Gomes Teixeira, Apartado 55142, 4051-401 Porto, Portugal.,2Department of Molecular Pathology and Immunology, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.,3i3S, Instituto de Investigação e Inovação em Saúde, University of Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Paul J Brindley
- Department of Microbiology, Immunology and Tropical Medicine and Research Center for Neglected Diseases of Poverty, School of Medicine and Health Sciences, George Washington University DC, Washington DC, 20037 USA
| | - Gabriel Rinaldi
- Department of Microbiology, Immunology and Tropical Medicine and Research Center for Neglected Diseases of Poverty, School of Medicine and Health Sciences, George Washington University DC, Washington DC, 20037 USA.,Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SA UK
| | - Fátima Gärtner
- 2Department of Molecular Pathology and Immunology, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.,3i3S, Instituto de Investigação e Inovação em Saúde, University of Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal.,6Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Rua Julio Amaral de Carvalho, 45, 4200-135 Porto, Portugal
| | - José M C da Costa
- 1Center for the Study of Animal Science, CECA-ICETA, University of Porto, Praça Gomes Teixeira, Apartado 55142, 4051-401 Porto, Portugal.,7National Health Institute Dr. Ricardo Jorge (INSA), Rua Alexandre Herculano, 321, 4000-055 Porto, Portugal
| | - Nuno Vale
- 2Department of Molecular Pathology and Immunology, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.,3i3S, Instituto de Investigação e Inovação em Saúde, University of Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal.,6Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Rua Julio Amaral de Carvalho, 45, 4200-135 Porto, Portugal.,8Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
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Phe-125 and Phe-226 of pig cytochrome P450 1A2 stabilize the binding of aflatoxin B 1 and 7-ethoxyresorufin through the key CH/π interactions. Biochem Pharmacol 2019; 166:292-299. [PMID: 31173723 DOI: 10.1016/j.bcp.2019.05.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 05/31/2019] [Indexed: 11/22/2022]
Abstract
Cytochrome P450 1A2 (CYP1A2) plays important roles in the metabolism of many planar and aromatic drugs and also contributes to the bioactivation of aflatoxin B1 (AFB1) in vivo. To date, the structural basis for CYP1A2's preference to the planar substrates remains unclear. Herein, we investigated the structure-activity relationships for pig CYP1A2 catalyzing AFB1 and 7-ethoxyresorufin (7-ER). A molecular docking study was performed based on a constructed model of pig CYP1A2, which predicted the contributions of Thr-118, Thr-124, Phe-125, Phe-226, Leu-260, and Asp-313 to the substrate catalysis. Site-directed mutagenesis and kinetic analyses exhibited the common grounds: Phe-125, Phe-226 and Asp-313 were vital to AFB1 oxidation (including exo-epoxidation and 9A-hydroxylation) and ethoxyresorufin O-deethylation. Meanwhile, Phe-125 and Phe-226 formed CH/π interactions with AFB1/7-ER, and Asp-313 formed hydrogen bonds with them. Based on other published reports, this study further emphasizes the critical roles of Phe-125 and Phe-226 in recognizing the planar substrates. Our findings highlight the structural basis of pig CYP1A2 specifically catalyzing AFB1 and 7-ER, and may help to elucidate the underlying mechanism of CYP1A2's metabolic preference to the planar and aromatic substrates.
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Ghosh J, Chowdhury AR, Srinivasan S, Chattopadhyay M, Bose M, Bhattacharya S, Raza H, Fuchs SY, Rustgi AK, Gonzalez FJ, Avadhani NG. Cigarette Smoke Toxins-Induced Mitochondrial Dysfunction and Pancreatitis Involves Aryl Hydrocarbon Receptor Mediated Cyp1 Gene Expression: Protective Effects of Resveratrol. Toxicol Sci 2018; 166:428-440. [PMID: 30165701 PMCID: PMC6260170 DOI: 10.1093/toxsci/kfy206] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We previously reported that mitochondrial CYP1 enzymes participate in the metabolism of polycyclic aromatic hydrocarbons and other carcinogens leading to mitochondrial dysfunction. In this study, using Cyp1b1-/-, Cyp1a1/1a2-/-, and Cyp1a1/1a2/1b1-/- mice, we observed that cigarette and environmental toxins, namely benzo[a]pyrene (BaP) and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), induce pancreatic mitochondrial respiratory dysfunction and pancreatitis. Our results suggest that aryl hydrocarbon receptor (AhR) activation and resultant mitochondrial dysfunction are associated with pancreatic pathology. BaP treatment markedly inhibits pancreatic mitochondrial oxygen consumption rate (OCR), ADP-dependent OCR, and also maximal respiration, in wild-type mice but not in Cyp1a1/1a2-/- and Cyp1a1/1a2/1b1-/- mice. In addition, both BaP and TCDD treatment markedly affected mitochondrial complex IV activity, in addition to causing marked reduction in mitochondrial DNA content. Interestingly, the AhR antagonist resveratrol, attenuated BaP-induced mitochondrial respiratory defects in the pancreas, and reversed pancreatitis, both histologically and biochemically in wild-type mice. These results reveal a novel role for AhR- and AhR-regulated CYP1 enzymes in eliciting mitochondrial dysfunction and cigarette toxin-mediated pancreatic pathology. We propose that increased mitochondrial respiratory dysfunction and oxidative stress are involved in polycyclic aromatic hydrocarbon associated pancreatitis. Resveratrol, a chemo preventive agent and AhR antagonist, and CH-223191, a potent and specific AhR inhibitor, confer protection against BaP-induced mitochondrial dysfunction and pancreatic pathology.
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Affiliation(s)
- Jyotirmoy Ghosh
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
- Department of Chemistry, Banwarilal Bhalotia College, Asansol, Ushagram, Asansol-713303, West Bengal, India
| | - Anindya Roy Chowdhury
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Satish Srinivasan
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
- Roche Molecular Systems, 1080, US-202, Branchburg, NJ 08876
| | - Mrittika Chattopadhyay
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Moumita Bose
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
- Department of Internal Medicine, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390
| | - Sabyasachi Bhattacharya
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, PA 19426
| | - Haider Raza
- Department of Biochemistry, College of Medicine and Health Sciences, UAE University, Al-Ain, UAE
| | - Serge Y Fuchs
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Anil K Rustgi
- Division of Gastroenterology, Departments of Medicine and Genetics, and Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Frank J Gonzalez
- National Cancer Institute, Center for Cancer Research, Bethesda, Maryland 20892
| | - Narayan G Avadhani
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
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Sabarwal A, Kumar K, Singh RP. Hazardous effects of chemical pesticides on human health-Cancer and other associated disorders. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 63:103-114. [PMID: 30199797 DOI: 10.1016/j.etap.2018.08.018] [Citation(s) in RCA: 235] [Impact Index Per Article: 39.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 07/21/2018] [Accepted: 08/27/2018] [Indexed: 05/27/2023]
Abstract
Poisoning from pesticides is a global public health problem and accounts for nearly 300,000 deaths worldwide every year. Exposure to pesticides is inevitable; there are different modes through which humans get exposed to pesticides. The mode of exposure is an important factor as it also signifies the concentration of pesticides exposure. Pesticides are used extensively in agricultural and domestic settings. These chemicals are believed to cause many disorders in humans and wildlife. Research from past few decades has tried to answer the associated mechanism of action of pesticides in conjunction with their harmful effects. This perspective considers the past and present research in the field of pesticides and associated disorders. We have reviewed the most common diseases including cancer which are associated with pesticides. Pesticides have shown to be involved in the pathogenesis of Parkinson's and Alzheimer's diseases as well as various disorders of the respiratory and reproductive tracts. Oxidative stress caused by pesticides is an important mechanism through which many of the pesticides exert their harmful effects. Oxidative stress is known to cause DNA damage which in turn may cause malignancies and other disorders. Many pesticides have shown to modulate the gene expression at the level of non-coding RNAs, histone deacetylases, DNA methylation patterns suggesting their role in epigenetics.
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Affiliation(s)
- Akash Sabarwal
- School of Life Sciences, Central University of Gujarat, Gandhinagar, Gujarat, India; Cancer Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Kunal Kumar
- School of Life Sciences, Central University of Gujarat, Gandhinagar, Gujarat, India
| | - Rana P Singh
- School of Life Sciences, Central University of Gujarat, Gandhinagar, Gujarat, India; Cancer Biology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India.
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Wu M, Liu S, Hu L, Qu H, Pan C, Lei P, Shen Y, Yang M. Global transcriptomic analysis of zebrafish in response to embryonic exposure to three antidepressants, amitriptyline, fluoxetine and mianserin. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2017; 192:274-283. [PMID: 28992598 DOI: 10.1016/j.aquatox.2017.09.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 08/26/2017] [Accepted: 09/27/2017] [Indexed: 06/07/2023]
Abstract
Antidepressants are among the most commonly detected pharmaceuticals in aqueous systems, and, as emerging organic pollutants, may exert negative effects on non-target aquatic organisms. Previously, it has been revealed that antidepressant exposure significantly inhibits the growth and development of fish during their early developmental stages. Thus, in the present study, we aimed to identify and compare the underlying mechanisms of action of different antidepressants at the transcriptional level using zebrafish (Danio rerio) embryos. Through high-throughput RNA sequencing (RNA-Seq) data analysis, 32, 34, and 130 differentially expressed genes (DEGs) were obtained from zebrafish larvae after 120h of embryonic exposure to sublethal concentrations of amitriptyline, fluoxetine, and mianserin, respectively. The expression profiles of the identified DEGs showed similar trends in response to the three antidepressant treatments, suggesting consistent toxic effects of low concentrations of these three drugs on the regulation of gene expression in fish. Several metabolic and signaling pathways, including glycolysis/gluconeogenesis and the insulin pathway, were affected in the exposed fish larvae. The expression profiles of selected DEGs were then verified by the qRT-PCR method, which indicated significant positive correlations with the RNA-Seq results. Next, we determined the concentration-dependent expression patterns of 6 selected DEGs in fish larvae exposed to three antidepressants at a series of environmentally relevant concentrations. The results revealed a significant concentration-dependent reduction in the levels of dual-specificity phosphatase 5 (dusp5) mRNA, as well as a non-concentration-dependent gene expression inhibition of prostaglandin D2 synthase b (ptgdsb); the circadian rhythm-related genes, i.e. those encoding nuclear receptor subfamily 1, group D, member 1 (nr1d1) and period 2 (per2); and genes encoding early growth response factors (egr1 and egr4), in the antidepressant-treated fish larvae. In summary, to our knowledge, our findings demonstrate, for the first time, that the three different categories of antidepressants have common effects on the gene expression involved in multiple biological processes and signaling pathways during the early development of fish and thus provide information for characterizing the adverse outcome pathways and on the ecological risk assessment of these pharmaceutical pollutants in the aquatic environment.
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Affiliation(s)
- Minghong Wu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444 China.
| | - Shuai Liu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444 China; College of the Environment & Ecology, Xiamen University, Xiamen, Fujian 361005, China.
| | - Lei Hu
- School of Life Sciences, Shanghai University, Shanghai 200444, China.
| | - Haidong Qu
- College of the Environment & Ecology, Xiamen University, Xiamen, Fujian 361005, China.
| | - Chenyuan Pan
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444 China.
| | - Penghui Lei
- School of Life Sciences, Shanghai University, Shanghai 200444, China.
| | - Yingjia Shen
- College of the Environment & Ecology, Xiamen University, Xiamen, Fujian 361005, China.
| | - Ming Yang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444 China.
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β-Naphthoflavone-Induced Mitochondrial Respiratory Damage in Cyp1 Knockout Mouse and in Cell Culture Systems: Attenuation by Resveratrol Treatment. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:5213186. [PMID: 29098061 PMCID: PMC5618780 DOI: 10.1155/2017/5213186] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 08/15/2017] [Indexed: 12/21/2022]
Abstract
A number of xenobiotic-inducible cytochrome P450s (CYPs) are now known to be localized in the mitochondrial compartment, though their pharmacological or toxicological roles remain unclear. Here, we show that BNF treatment markedly inhibits liver mitochondrial O2 consumption rate (OCR), ADP-dependent OCR, and also reserve OCR, in wild-type mice but not in Cyp1a1/1a2(-/-) double knockout mice. BNF treatment markedly affected mitochondrial complex I and complex IV activities and also attenuated mitochondrial gene expression. Furthermore, under in vitro conditions, BNF treatment induced cellular ROS production, which was inhibited by mitochondria-targeted antioxidant Mito-CP and CYP inhibitor proadefin, suggesting that most of the ROS production was intramitochondrial and probably involved the catalytic activity of mitochondrial CYP1 enzymes. Interestingly, our results also show that the AHR antagonist resveratrol, markedly attenuated BNF-induced liver mitochondrial defects in wild-type mice, confirming the role of AHR and AHR-regulated CYP1 genes in eliciting mitochondrial dysfunction. These results are consistent with reduced BNF-induced mitochondrial toxicity in Cyp1a1/1a2(-/-) mice and elevated ROS production in COS cells stably expressing CYP1A1. We propose that increased mitochondrial ROS production and respiratory dysfunction are part of xenobiotic toxicity. Resveratrol, a chemopreventive agent, renders protection against BNF-induced toxicity.
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Hori H, Hirata D, Fujii W, Oda Y. Development of a high-throughput genotoxicity assay using Umu test strains expressing human cytochrome P450s and NADPH-P450 reductase and bacterial O-acetyltransferase. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2017; 58:209-216. [PMID: 28436560 DOI: 10.1002/em.22092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/06/2017] [Accepted: 04/07/2017] [Indexed: 06/07/2023]
Abstract
Umu test is one of the in vitro genotoxicity test that has been used widely. It was developed as a high-throughput test system using the 96-well microplate. We have previously constructed new umu test strains for the evaluation of genotoxicity of procarcinogenic metabolic products formed by cytochrome P450 (CYP) enzymes. In this study, a highly sensitive high-throughput genotoxicity test was developed using four umu test strains (OY1002/1A1, OY1002/1B1, OY1002/1A2, and OY1002/3A4) that express human CYPs and NADPH-P450 reductase. We found that the modified umu-microplate method was more sensitive than the conventional microplate method using strain OY1002/1A2. In addition, the new microplate method was better able to detect genotoxicity than the test tube method when the strain OY1002/1A2 was used and had similar sensitivity for the remaining three strains. When the microplate method was used, OY1002/1A2 showed stronger umuC gene expression in the presence of 2-amino-6-methyldipyrido[1,2-a:3',2'-d]imidazole, 2-amino-3-methylimidazo[4,5-f]quinoline, 2-amino-3,4-dimethylimidazo[4,5-f]quinoline, 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline, 2-aminofluorene, and 2-aminoanthracene compared to other strains. We also confirmed CYP1A2 expression in OY1002/1A2 in this condition. These results indicate that the microplate version of this test system can detect the genotoxicity of heterocyclic and aromatic amines with high sensitivity and can be used for high-throughput screening of potentially genotoxic compounds. Environ. Mol. Mutagen. 58:209-216, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Hisako Hori
- Safety Science Institute, Suntory MONOZUKURI Expert Limited, Seika-cho, Soraku-gun, Kyoto, Japan
| | - Daisuke Hirata
- Protein Purify Co. Ltd, Magarisawa-cho, Isesaki-city, Gunma, Japan
| | - Wataru Fujii
- Safety Science Institute, Suntory MONOZUKURI Expert Limited, Seika-cho, Soraku-gun, Kyoto, Japan
| | - Yoshimitsu Oda
- Institute of Life and Environmental Sciences, Osaka Shin-Ai College, Tsurumi-ku, Japan
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Abd El Wahab N, Shafik NF, Shafik RE, Taha SA, Shafik HE, Darwish AD. Association of CYP3A5*3 and CYP1A1*2C Polymorphism with Development of Acute Myeloid Leukemia in Egyptian Patients. Asian Pac J Cancer Prev 2017; 18:747-752. [PMID: 28441709 PMCID: PMC5464494 DOI: 10.22034/apjcp.2017.18.3.747] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Aim: Cytochrome P450 (CYP) enzyme catalyzes the phase I metabolism reaction which metabolize endogenous
and exogenous DNA-reactive chemical compounds and xenobiotics which could induce genotoxicity and increase the
risk for leukemia. We aimed to detect frequency of CYP3A5*3 and CYP1A1*2C polymorphisms in Egyptian acute
myeloid leukemia (AML) patients and to determine role of allele’s variants as a risk factor for developing leukemia.
Patients and Methods: A case-control study was conducted on seventy acute myeloid leukemia patients and thirty
control subjects. Samples were analyzed for prevalence of CYP3A5*3 and CYP1A1*2C polymorphisms using
PCR - restriction fragment length polymorphism method. Results: CYP3A5*3 polymorphism (3/3) and (1/3) genotype
were significantly elevated in AML group compared to control group (p=0.002). However, no statistical significant
differences were found between patients and control group as regard CYP1A1*2C polymorphism. Conclusion: Our
results suggest that Egyptians carrying CYP3A5*3 polymorphism might have an increased risk of AML emphasizing
the significance of effective phase I detoxification in carcinogenesis.
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25
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A comprehensive contribution of genes for aryl hydrocarbon receptor signaling pathway to hypertension susceptibility. Pharmacogenet Genomics 2017; 27:57-69. [DOI: 10.1097/fpc.0000000000000261] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Trumbo-White CM, Hvastkovs EG. Electrochemical Assessment of Sequence Selective DNA Damage from Myoglogin and Cytochrome P450 Bioactivated Benzo[ a]pyrene at TP53 Oligomers. ELECTROANAL 2016. [DOI: 10.1002/elan.201600109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Eli G. Hvastkovs
- Department of Chemistry; East Carolina University; Greenville, NC
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Singh SA, Choudhury JH, Kapfo W, Kundu S, Dhar B, Laskar S, Das R, Kumar M, Ghosh SK. Influence of the CYP1A1 T3801C Polymorphism on Tobacco and Alcohol-Associated Head and Neck Cancer Susceptibility in Northeast India. Asian Pac J Cancer Prev 2016; 16:6953-61. [PMID: 26514474 DOI: 10.7314/apjcp.2015.16.16.6953] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Tobacco and alcohol contain or may generate carcinogenic compounds related to cancers. CYP1A1 enzymes act upon these carcinogens before elimination from the body. The aim of this study was to investigate whether CYP1A1 T3801C polymorphism modulates the relationship between tobacco and alcohol- associated head and neck cancer (HNC) susceptibility among the northeast Indian population. MATERIALS AND METHODS One hundred and seventy histologically confirmed HNC cases and 230 controls were included within the study. The CYP1A1 T3801C polymorphism was determined using PCR-RFLP, and the results were confirmed by DNA sequencing. Logistic regression (LR) and multifactor dimensionality reduction (MDR) approaches were applied for statistical analysis. RESULTS The CYP1A1 CC genotype was significantly associated with HNC risk (P=0.045). A significantly increased risk of HNC (OR=6.09; P<0.0001) was observed in individuals with combined habits of smoking, alcohol drinking and tobacco-betel quid chewing. Further, gene-environment interactions revealed enhanced risks of HNC among smokers, alcohol drinkers and tobacco-betel quid chewers carrying CYP1A1 TC or CC genotypes. The highest risk of HNC was observed among smokers (OR=7.55; P=0.009) and chewers (OR=10.8; P<0.0001) carrying the CYP1A1 CC genotype. In MDR analysis, the best model for HNC risk was the three-factor model combination of smoking, tobacco-betel quid chewing and the CYP1A1 variant genotype (CVC=99/100; TBA=0.605; P<0.0001); whereas interaction entropy graphs showed synergistic interaction between tobacco habits and CYP1A1. CONCLUSIONS Our results confirm that the CYP1A1 T3801C polymorphism modifies the risk of HNC and further demonstrated importance of gene-environment interaction.
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Affiliation(s)
- Seram Anil Singh
- Molecular Medicine Laboratory, Department of Biotechnology, Assam University, Silchar, Assam, India E-mail :
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The Effect of the CYP1A1*2A Allele on Colorectal Cancer Susceptibility in a British Population. Genet Test Mol Biomarkers 2016; 20:475-7. [DOI: 10.1089/gtmb.2016.0099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Li HX, Peng XX, Zong Q, Zhang K, Wang MX, Liu YZ, Han GL. Cigarette smoking and risk of adult glioma: a meta-analysis of 24 observational studies involving more than 2.3 million individuals. Onco Targets Ther 2016; 9:3511-23. [PMID: 27366088 PMCID: PMC4913539 DOI: 10.2147/ott.s99713] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Cigarette smoking has been shown to be a risk factor for adult glioma by some but not all studies. We conducted a meta-analysis to systematically assess the potential association. Methods PubMed and EMBASE were searched from the date of their inception to October 1, 2015, to identify relevant articles. Reference lists from these articles were reviewed to identify additional studies. Both cohort and case–control studies were included. Fixed-effects models were used to calculate the overall relative risk (RR) with corresponding 95% confidence intervals (CIs). Results The final analysis included 24 studies (seven cohort and 17 case–control studies), involving more than 2.3 million individuals. The combined RR was 1.04 (95% CI: 1.00, 1.09; P=0.073) for ever-smokers, 0.97 (95% CI: 0.88, 1.07; P=0.574) for current-smokers, and 1.07 (95% CI: 0.98, 1.16; P=0.130) for past smokers, with little evidence of heterogeneity. Omission of any single study from the analysis had little effect on the result. No evidence of publication bias was found. A small but statistically significant increase was found in past smokers in females (RR: 1.13, 95% CI: 1.00, 1.28; P=0.046) but not in males. Conclusion In general, there was no association between cigarette smoking and adult glioma. The small but statistically significant association in females requires further investigation.
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Affiliation(s)
- Hong-Xing Li
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
| | - Xiao-Xiao Peng
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China; Department of Intensive Care Unit, Dongying, Shandong, People's Republic of China
| | - Qiang Zong
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
| | - Kai Zhang
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
| | - Ming-Xin Wang
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
| | - Yi-Zhe Liu
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
| | - Guang-Liang Han
- Department of Neurosurgery, Shengli Oilfield Central Hospital, Dongying, Shandong, People's Republic of China
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Li S, Li G, Kong F, Liu Z, Li N, Li Y, Guo X. The Association of CYP1A1 Gene With Cervical Cancer and Additional SNP-SNP Interaction in Chinese Women. J Clin Lab Anal 2016; 30:1220-1225. [PMID: 27265845 DOI: 10.1002/jcla.22006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 05/02/2016] [Indexed: 11/07/2022] Open
Abstract
AIMS The aim of this study was to investigate the association between CYP1A1 gene polymorphism and cervical cancer risk, and the impact of SNP-SNP interaction on cervical cancer risk in Chinese women. METHODS A total of 728 females with a mean age of 60.1 ± 14.5 years old were selected, including 360 cervical cancer patients and 368 normal controls. Logistic regression was performed to investigate association between single-nucleotide polymorphisms (SNP) and cervical cancer risk. Generalized multifactor dimensionality reduction (GMDR) was used to analyze the SNP-SNP interaction. RESULTS Logistic analysis showed a significant association between rs4646903 and increased cervical cancer risk. The carriers of homozygous mutant of rs4646903 polymorphism revealed increased cervical cancer risk than those with wild-type homozygotes, OR (95%CI) were 1.45 (1.20-1.95). There was a significant two-locus model (P = 0.0107) involving rs4646903 and rs1048943, indicating a potential SNP-SNP interaction between rs4646903 and rs1048943. Overall, the two-locus models had a cross-validation consistency of 10 of 10, and had the testing accuracy of 60.72%. Subjects with TC or CC of rs4646903 and AG or GG of rs1048943 genotype have the highest cervical cancer risk, compared to subjects with TT of rs4646903 and AA of rs1048943 genotype, OR (95%CI) was 2.03 (1.42-2.89). CONCLUSIONS rs4646903 minor alleles and interaction between rs4646903 and rs1048943 were associated with increased cervical cancer risk.
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Affiliation(s)
- Shuhong Li
- Department of Obstetrics and Gynecology, Yantai Yuhuangding Hospital, Yantai, China
| | - Guiqin Li
- Department of Obstetrics and Gynecology, Yantai Yuhuangding Hospital, Yantai, China
| | - Fanqiang Kong
- Emergency Department, Yantai Yuhuangding Hospital, Yantai, China
| | - Zhifen Liu
- Department of Obstetrics and Gynecology, Yantai Yuhuangding Hospital, Yantai, China
| | - Ning Li
- Central Laboratory, Yantai Yuhuangding Hospital, Yantai, China
| | - Yan Li
- Central Laboratory, Yantai Yuhuangding Hospital, Yantai, China
| | - Xiaojing Guo
- Department of Reproductive Medicine, Affiliated Hospital of Medical College, Qingdao University, Qingdao, China.
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Rhon-Calderón EA, Galarza RA, Lomniczi A, Faletti AG. The systemic and gonadal toxicity of 3-methylcholanthrene is prevented by daily administration of α-naphthoflavone. Toxicology 2016; 353-354:58-69. [PMID: 27163632 DOI: 10.1016/j.tox.2016.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 04/25/2016] [Accepted: 05/05/2016] [Indexed: 11/24/2022]
Abstract
In the present study, we investigated the effect of 3-methylcholanthrene (3MC) on sexual maturity and the ability of α-naphthoflavone (αNF) to prevent this action. To this end, immature rats were daily injected intraperitoneally with 3MC (0.1 or 1mg/kg) and/or αNF (80mg/kg). Body weight, vaginal opening and estrous cycle were recorded and ovaries were obtained on the day of estrus. Ovarian weight, ovulation rate (measured by the number of oocytes within oviducts), and follicular development (determined by histology) were studied. No differences were found in body weight, ovarian weight, day of vaginal opening, or the establishment of the estrous cycle among the different groups of rats. However, animals treated with 3MC, at both doses, exhibited a lower number of primordial, primary, preantral and antral follicles than controls. Also, 3MC inhibited the ovulation rate and induced an overexpression of both the Cyp1a1 and Cyp1b1 genes, measured by chromatin immunoprecipitation assay. The daily treatment with αNF alone increased the number of follicles in most of the stages analyzed when compared with controls. Moreover, the αNF treatment prevented completely not only the 3MC-induced decrease in all types of follicles but also the 3MC-induced overexpression of Cyp enzymes and the genetic damage in bone marrow cells and oocytes. These results suggest that (i) daily exposure to 3MC during the pubertal period destroys the follicle reserve and alters the ovulation rate; (ii) the 3MC action seems to be mediated by an aryl hydrocarbon receptor-dependent mechanism; (iii) daily administration of αNF has a clear stimulatory action on the ovarian function; and (iv) αNF may prevent both the systemic and gonadal 3MC-induced toxicity.
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Affiliation(s)
- Eric Alejandro Rhon-Calderón
- Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Rocío Alejandra Galarza
- Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Alejandro Lomniczi
- Division of Neuroscience, Oregon National Primate Research Center, Beaverton, OR 97006, USA
| | - Alicia Graciela Faletti
- Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina.
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Siciliano I, Spadaro D, Prelle A, Vallauri D, Cavallero MC, Garibaldi A, Gullino ML. Use of Cold Atmospheric Plasma to Detoxify Hazelnuts from Aflatoxins. Toxins (Basel) 2016; 8:toxins8050125. [PMID: 27128939 PMCID: PMC4885040 DOI: 10.3390/toxins8050125] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 04/15/2016] [Accepted: 04/18/2016] [Indexed: 11/16/2022] Open
Abstract
Aflatoxins, produced by Aspergillus flavus and A. parasiticus, can contaminate different foodstuffs, such as nuts. Cold atmospheric pressure plasma has the potential to be used for mycotoxin detoxification. In this study, the operating parameters of cold atmospheric pressure plasma were optimized to reduce the presence of aflatoxins on dehulled hazelnuts. First, the effect of different gases was tested (N₂, 0.1% O₂ and 1% O₂, 21% O₂), then power (400, 700, 1000, 1150 W) and exposure time (1, 2, 4, and 12 min) were optimized. In preliminary tests on aflatoxin standard solutions, this method allowed to obtain a complete detoxification using a high power for a few minutes. On hazelnuts, in similar conditions (1000 W, 12 min), a reduction in the concentration of total aflatoxins and AFB₁ of over 70% was obtained. Aflatoxins B₁ and G₁ were more sensitive to plasma treatments compared to aflatoxins B₂ and G₂, respectively. Under plasma treatment, aflatoxin B₁ was more sensitive compared to aflatoxin G₁. At the highest power, and for the longest time, the maximum temperature increment was 28.9 °C. Cold atmospheric plasma has the potential to be a promising method for aflatoxin detoxification on food, because it is effective and it could help to maintain the organoleptic characteristics.
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Affiliation(s)
- Ilenia Siciliano
- Agroinnova-Centre of Competence for the Innovation in the Agro-Environmental Sector, University of Turin, Largo Paolo Braccini, 2 Grugliasco, Turin 10095, Italy.
| | - Davide Spadaro
- Agroinnova-Centre of Competence for the Innovation in the Agro-Environmental Sector, University of Turin, Largo Paolo Braccini, 2 Grugliasco, Turin 10095, Italy.
- Department of Agricultural, Forest and Food Science (DISAFA), University of Turin, Largo Paolo Braccini, 2 Grugliasco, Turin 10095, Italy.
| | - Ambra Prelle
- Department of Agricultural, Forest and Food Science (DISAFA), University of Turin, Largo Paolo Braccini, 2 Grugliasco, Turin 10095, Italy.
| | - Dario Vallauri
- Tecnogranda SpA, Via G.B. Conte, 19 Dronero, Cuneo 12025, Italy.
| | | | - Angelo Garibaldi
- Agroinnova-Centre of Competence for the Innovation in the Agro-Environmental Sector, University of Turin, Largo Paolo Braccini, 2 Grugliasco, Turin 10095, Italy.
| | - Maria Lodovica Gullino
- Agroinnova-Centre of Competence for the Innovation in the Agro-Environmental Sector, University of Turin, Largo Paolo Braccini, 2 Grugliasco, Turin 10095, Italy.
- Department of Agricultural, Forest and Food Science (DISAFA), University of Turin, Largo Paolo Braccini, 2 Grugliasco, Turin 10095, Italy.
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Xia B, Yang LQ, Huang HY, Pang L, Yang XF, Yi YJ, Ren XH, Li J, Zhuang ZX, Liu JJ. Repression of Biotin-Related Proteins by Benzo[a]Pyrene-Induced Epigenetic Modifications in Human Bronchial Epithelial Cells. Int J Toxicol 2016; 35:336-43. [PMID: 26960346 DOI: 10.1177/1091581816637071] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Benzo[a]pyrene (B[a]P) exposure has been associated with the alteration in epigenetic marks that are involved in cancer development. Biotinidase (BTD) and holocarboxylase synthetase (HCS) are 2 major enzymes involved in maintaining the homeostasis of biotinylation, and the deregulation of this pathway has been associated with a number of cancers. However, the link between B[a]P exposure and the dysregulation of BTD/HCS in B[a]P-associated tumorigenesis is unknown. Here we showed that the expression of both BTD and HCS was significantly decreased upon B[a]P treatment in human bronchial epithelial (16HBE) cells. Benzo[a]pyrene exposure led to the global loss of DNA methylation by immunofluorescence, which coincided with the reduction in acetylation levels on histones H3 and H4 in 16HBE cells. Consistent with decreased histone acetylation, histone deacetylases (HDACs) HDAC2 and HDAC3 were significantly upregulated in a dosage-dependent manner. When DNA methylation or HDAC activity was inhibited, we found that the reduction in BTD and HCS was separately regulated through distinct epigenetic mechanisms. Together, our results suggested the potential link between B[a]P toxicity and deregulation of biotin homeostasis pathway in B[a]P-associated cancer development.
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Affiliation(s)
- Bo Xia
- Key Laboratory of Modern Toxicology, Shenzhen Center for Disease Control and Prevention, Shenzhen, China College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Lin-Qing Yang
- Key Laboratory of Modern Toxicology, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Hai-Yan Huang
- Key Laboratory of Modern Toxicology, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Li Pang
- College of Horticulture and Gardening, Hunan Agricultural University, Changsha, Hunan, China
| | - Xi-Fei Yang
- Key Laboratory of Modern Toxicology, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - You-Jin Yi
- College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Xiao-Hu Ren
- Key Laboratory of Modern Toxicology, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Jie Li
- Key Laboratory of Modern Toxicology, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Zhi-Xiong Zhuang
- Key Laboratory of Modern Toxicology, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Jian-Jun Liu
- Key Laboratory of Modern Toxicology, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
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Zhang LP, Wang CP, Li LH, Tang YF, Li WC. The interaction between smoking and CYP1A1 MspI polymorphism on lung cancer: a meta-analysis in the Chinese population. Eur J Cancer Care (Engl) 2016; 26. [PMID: 26918783 DOI: 10.1111/ecc.12459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2016] [Indexed: 11/30/2022]
Abstract
Many studies have examined the interaction between CYP1A1 MspI gene polymorphism and smoking for the risk of lung cancer risk in Chinese, but their results have been inconsistent. Therefore, a meta-analysis was performed to ascertain this issue. PubMed, Springer Link, Ovid and other Chinese databases were searched to include all the relevant studies. Smoking status was categorised as 'smokers' and 'non-smokers.' The pooled odds ratios (ORs) with 95% confidence intervals (CIs) were calculated using fixed or random effect model. Subgroup analyses according to ethnicity, source of control and geographical location were also conducted. This meta-analysis identified 13 studies containing 2248 lung cases and 3079 controls. Overall, a significant association between lung cancer and the variants of CYP1A1 MspI was found among smokers (type B and type C combined vs. type A: OR = 1.89, 95% CI = 1.15-3.11, P = 0.000 for heterogeneity), whereas not found among non-smokers. Similar to the overall results, stratified analyses showed that the increased risk of lung cancer was observed in population-based studies and north China among smokers (OR = 1.65, 95%CI = 1.03-2.66; OR = 2.00, 95% CI = 1.14-3.53). Our meta-analysis showed that there was an interaction between the CYP1A1 MspI and smoking on the risk of lung cancer in the Chinese population.
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Affiliation(s)
- L-P Zhang
- Department of Preventive Medicine, School of Public Health, WeiFang Medical University, WeiFang, China
| | - C-P Wang
- Department of Preventive Medicine, School of Public Health, WeiFang Medical University, WeiFang, China
| | - L-H Li
- Department of Epidemiology, School of Public Health, WeiFang Medical University, WeiFang, China
| | - Y-F Tang
- Department of Preventive Medicine, School of Public Health, WeiFang Medical University, WeiFang, China
| | - W-C Li
- Department of Mathematical Statistics, School of Public Health, WeiFang Medical University, WeiFang, China
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Matakova T, Halasova E, Dzian A, Hruby R, Halasa M, Javorka K, Skerenova M. Associations of CYP1A2 Polymorphisms with the Risk Haplotypes in Lung Cancer in the Slovak Population. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 911:23-32. [PMID: 26987327 DOI: 10.1007/5584_2016_220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Phase I enzymes, including cytochrome P450, family 1, subfamily A, and polypeptide 2 (CYP1A2), are involved in the activation of carcinogens to reactive intermediates that are capable of binding covalently to DNA to form DNA adducts, potentially initiating the carcinogenic process. The aim of present study was to investigate the association of CYP1A2 gene polymorphisms and haplotypes with lung cancer risk. A case-control study was carried out on 105 lung cancer patients and 189 controls. To investigate three CYP1A2 polymorphisms: rs2472299, rs2470890, rs11072508 we used a high resolution melting analysis. We found significant allele associations (rs2470890 and rs2422299) with lung cancer risk. We searched for meaningful associations for all variants in the dominant, recessive, and additive genetic models. Genotype associations in the recessive model were of marginal significance for the same single nucleotide polymorphisms. A haplotype analysis included five variants with the frequency higher than 1 %. The haplotype "acc", present with the highest frequency, was associated with increased lung cancer risk (38.7 % vs. 31.5 %; OR 1.38; 95 %CI 0.95-2.01). On the contrary, rare haplotype "gtc" was significantly associated with decreased lung cancer risk in the Slovak population. In conclusion, the present study identified the risk alleles and haploid genotype associations of the CYP1A2 gene in lung cancer.
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Affiliation(s)
- T Matakova
- Department of Medical Biochemistry, Comenius University in Bratislava, 4D Mala Hora St, 03601, Martin, Slovakia
| | - E Halasova
- Department of Medical Biology, Comenius University in Bratislava, 4 Mala Hora St, 03601, Martin, Slovakia
| | - A Dzian
- Clinic of Thoracic Surgery and University Hospital Martin, Comenius University in Bratislava, 2 Kollarova St, 03601, Martin, Slovakia.
| | - R Hruby
- Department of Oncology, Hospital in Zilina, Zilina, Slovakia
| | - M Halasa
- Clinic Surgery and Transplant Center, University Hospital in Martin, 2 Kollarova St, 03601, Martin, Slovakia
| | - K Javorka
- Department of Midwifery, Catholic University in Ruzomberok, 03401, Ruzomberok, Slovakia
| | - M Skerenova
- Department of Clinical Biochemistry, University Hospital in Martin, 2 Kollarova St, 03601, Martin, Slovakia
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Biotin-mediated epigenetic modifications: Potential defense against the carcinogenicity of benzo[a]pyrene. Toxicol Lett 2016; 241:216-24. [DOI: 10.1016/j.toxlet.2015.11.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/03/2015] [Accepted: 11/08/2015] [Indexed: 12/16/2022]
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Lu J, Zhao Q, Zhai YJ, He HR, Yang LH, Gao F, Zhou RS, Zheng J, Ma XC. Genetic polymorphisms of CYP1A1 and risk of leukemia: a meta-analysis. Onco Targets Ther 2015; 8:2883-902. [PMID: 26491362 PMCID: PMC4608596 DOI: 10.2147/ott.s92259] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The associations between CYP1A1 polymorphisms and risk of leukemia have been studied extensively, but the results have been inconsistent. Therefore, in this study, we performed a meta-analysis to clarify associations of three CYP1A1 polymorphisms (T3801C, A2455G, and C4887A) with the risks of acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), and chronic myeloid leukemia (CML). Medline, EMBASE, and China National Knowledge Infrastructure databases were searched to collect relevant studies published up to April 20, 2015. The extracted data were analyzed statistically, and pooled odds ratios with 95% confidence intervals were calculated to quantify the associations. Overall, 26 publications were included. Finally, T3801C was associated with an increased risk of AML in Asians under the dominant model. For A2455G, the risk of ALL was increased among Caucasians in the recessive model and the allele-contrast model; A2455G was also associated with an increased risk of CML among Caucasians under the recessive model, dominant model, and allele-contrast model. For C4887A, few of the included studies produced data. In conclusion, the results suggest that Asians carrying the T3801C C allele might have an increased risk of AML and that Caucasians with the A2455G GG genotype might have an increased risk of ALL. Further investigations are needed to confirm these associations.
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Affiliation(s)
- Jun Lu
- Clinical Research Center, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Qian Zhao
- Clinical Research Center, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China ; College of Pharmacy, Xi'an Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Ya-Jing Zhai
- Department of Pharmacy, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Hai-Rong He
- Clinical Research Center, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Li-Hong Yang
- Clinical Research Center, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Fan Gao
- Clinical Research Center, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Rong-Sheng Zhou
- Department of Anesthesiology, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Jie Zheng
- Clinical Research Center, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
| | - Xian-Cang Ma
- Clinical Research Center, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China ; Department of Psychiatry, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China
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de Oliveira CBM, Cardoso-Filho C, Bossi LS, Lourenço GJ, Costa-Gurgel MS, Lima CSP. Association of CYP1A1 A4889G and T6235C polymorphisms with the risk of sporadic breast cancer in Brazilian women. Clinics (Sao Paulo) 2015; 70:680-5. [PMID: 26598080 PMCID: PMC4602382 DOI: 10.6061/clinics/2015(10)04] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Accepted: 07/21/2015] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES We examined the influence of CYP1A1 A4889G and T6235C polymorphisms on the risk of sporadic breast cancer. METHODS DNA from 742 sporadic breast cancer patients and 742 controls was analyzed using the polymerase chain reaction, followed by the restriction fragment length polymorphism technique. RESULTS More patients had the CYP1A1 4889AG+GG genotype compared to controls (29.0% versus 23.2%, p=0.004). The G allele carriers had a 1.50-fold increased risk (95% CI: 1.14-1.97) of sporadic breast cancer compared to the other study participants. The frequency of the 4889AG+GG genotype among the Caucasian patients was higher than in the non-Caucasian patients (30.4% versus 20.2%, p=0.03) and controls (30.4% versus 23.2%, p=0.002). Caucasians and G allele carriers had a 1.61-fold increased risk (95% CI: 1.20-2.15) of sporadic breast cancer compared to other subjects. The CYP1A1 4889AG+GG genotype was more common among patients with a younger median age at first full-term pregnancy than among controls (33.8% versus 23.2%, p=0.001) and subjects whose first full-term pregnancies occurred at an older age (33.8% versus 26.1%, p=0.03). Women with the CYP1A1 4889AG+GG genotype and earlier first full-term pregnancies had a 1.87-fold (95% CI: 1.32-2.67) increased risk of sporadic breast cancer compared to the other study participants. Excess CYP1A1 4889AG+GG (39.8% versus27.1%, p=0.01) and 6235TC+CC (48.4% versus 35.9%, p=0.02) genotypes were also observed in patients with grade I and II tumors compared to patients with grade III tumors and controls (39.8% versus 23.2%, p=0.04; 48.4% versus 38.6%, p=0.04). The G and C allele carriers had a 2.44-fold (95% CI: 1.48-4.02) and 1.67-fold (95% CI: 1.03-2.69) increased risk, respectively, of developing grade I and II tumors compared to other subjects. CONCLUSIONS The CYP1A1 A4889G and T6235C polymorphisms may alter the risk of sporadic breast cancer in Brazilian women.
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Affiliation(s)
- Camila Borges Martins de Oliveira
- Universidade de Campinas, Faculdade de Ciências Médicas, Departamento de Clínica Médica, Campinas, SP, Brazil
- Corresponding author: E-mail:
| | - Cássio Cardoso-Filho
- Universidade de Campinas, Centro de Assistência Integral à Saúde da Mulher, Campinas, SP, Brazil
| | - Leonardo Silveira Bossi
- Universidade de Campinas, Centro de Assistência Integral à Saúde da Mulher, Campinas, SP, Brazil
| | - Gustavo Jacob Lourenço
- Universidade de Campinas, Faculdade de Ciências Médicas, Departamento de Clínica Médica, Campinas, SP, Brazil
| | | | - Carmen Silvia Passos Lima
- Universidade de Campinas, Faculdade de Ciências Médicas, Departamento de Clínica Médica, Campinas, SP, Brazil
- Corresponding author: E-mail:
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Wei XP, Hu J. Cytochrome P450 1A1 exon 7 polymorphism and susceptibility to lung cancer in the Chinese population: an updated meta-analysis and review. Onco Targets Ther 2015; 8:1611-8. [PMID: 26170697 PMCID: PMC4494617 DOI: 10.2147/ott.s84575] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Although many epidemiologic studies have investigated the cytochrome P450 1A1 (CYP1A1) exon 7 gene polymorphism and its association with lung cancer (LC), definitive conclusions cannot be drawn. OBJECTIVE To clarify the effects of CYP1A1 exon 7 polymorphism on the risk of LC, an updated meta-analysis was performed in the Chinese population. METHODS Related studies were identified from PubMed, Springer Link, Ovid, the Chinese Wanfang Data Knowledge Service Platform, Chinese National Knowledge Infrastructure (CNKI), and the Chinese Biology Medicine (CBM) databases until October 2014. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of the associations. RESULTS A total of 25 articles including 3,540 LC cases and 5,284 controls were included in this meta-analysis. Overall, significant association was found between CYP1A1 exon 7 polymorphism and LC risk when all studies in the Chinese population were pooled into this meta-analysis (GG versus AA: OR = 1.71, 95% CI: 1.46-2.01; GG versus AG: OR = 1.41, 95% CI: 1.21-1.64; GG + AG versus AA: OR = 1.37, 95% CI: 1.16-1.62; GG versus AA + AG: OR = 1.52, 95% CI: 1.32-1.76). In subgroup analyses stratified by ethnicity, source of controls, and geographical locations, significantly increased risk was found in Chinese Han people, in population-based studies, in hospital-based studies, in South China, and in North China. CONCLUSION This meta-analysis provides the evidence that CYP1A1 exon 7 polymorphism may contribute to LC development in the Chinese population, and studies with a larger sample size and wider population spectrum are warranted to verify this finding.
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Affiliation(s)
- Xiu-Ping Wei
- Respiratory Department, Beijing Tiantan Hospital affiliated to Capital Medical University, Beijing, People's Republic of China
| | - Jie Hu
- Respiratory Department, Beijing Tiantan Hospital affiliated to Capital Medical University, Beijing, People's Republic of China
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Sim J, Choi E, Lee YM, Jeong GS, Lee S. In vitro inhibition of human cytochrome P450 by cudratricusxanthone A. Food Chem Toxicol 2015; 81:171-175. [DOI: 10.1016/j.fct.2015.04.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 04/07/2015] [Accepted: 04/20/2015] [Indexed: 01/17/2023]
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Hrycay EG, Bandiera SM. Involvement of Cytochrome P450 in Reactive Oxygen Species Formation and Cancer. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2015; 74:35-84. [PMID: 26233903 DOI: 10.1016/bs.apha.2015.03.003] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review examines the involvement of cytochrome P450 (CYP) enzymes in the formation of reactive oxygen species in biological systems and discusses the possible involvement of reactive oxygen species and CYP enzymes in cancer. Reactive oxygen species are formed in biological systems as byproducts of the reduction of molecular oxygen and include the superoxide radical anion (∙O2-), hydrogen peroxide (H2O2), hydroxyl radical (∙OH), hydroperoxyl radical (HOO∙), singlet oxygen ((1)O2), and peroxyl radical (ROO∙). Two endogenous sources of reactive oxygen species are the mammalian CYP-dependent microsomal electron transport system and the mitochondrial electron transport chain. CYP enzymes catalyze the oxygenation of an organic substrate and the simultaneous reduction of molecular oxygen. If the transfer of oxygen to a substrate is not tightly controlled, uncoupling occurs and leads to the formation of reactive oxygen species. Reactive oxygen species are capable of causing oxidative damage to cellular membranes and macromolecules that can lead to the development of human diseases such as cancer. In normal cells, intracellular levels of reactive oxygen species are maintained in balance with intracellular biochemical antioxidants to prevent cellular damage. Oxidative stress occurs when this critical balance is disrupted. Topics covered in this review include the role of reactive oxygen species in intracellular cell signaling and the relationship between CYP enzymes and cancer. Outlines of CYP expression in neoplastic tissues, CYP enzyme polymorphism and cancer risk, CYP enzymes in cancer therapy and the metabolic activation of chemical procarcinogens by CYP enzymes are also provided.
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Affiliation(s)
- Eugene G Hrycay
- Faculty of Pharmaceutical Sciences, The University of British Columbia, Vancouver, British Columbia, Canada.
| | - Stelvio M Bandiera
- Faculty of Pharmaceutical Sciences, The University of British Columbia, Vancouver, British Columbia, Canada
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Kou Y, Zhang S, Chen X, Hu S. Gene expression profile analysis of colorectal cancer to investigate potential mechanisms using bioinformatics. Onco Targets Ther 2015; 8:745-52. [PMID: 25914544 PMCID: PMC4399548 DOI: 10.2147/ott.s78974] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
This study aimed to explore the underlying molecular mechanisms of colorectal cancer (CRC) using bioinformatics analysis. Using GSE4107 datasets downloaded from the Gene Expression Omnibus, the differentially expressed genes (DEGs) were screened by comparing the RNA expression from the colonic mucosa between 12 CRC patients and ten healthy controls using a paired t-test. The Gene Ontology (GO) functional and pathway enrichment analyses of DEGs were performed using the Database for Annotation, Visualization and Integrated Discovery (DAVID) software followed by the construction of a protein–protein interaction (PPI) network. In addition, hub gene identification and GO functional and pathway enrichment analyses of the modules were performed. A total of 612 up- and 639 downregulated genes were identified. The upregulated DEGs were mainly involved in the regulation of cell growth, migration, and the MAPK signaling pathway. The downregulated DEGs were significantly associated with oxidative phosphorylation, Alzheimer’s disease, and Parkinson’s disease. Moreover, FOS, FN1, PPP1CC, and CYP2B6 were selected as hub genes in the PPI networks. Two modules (up-A and up-B) in the upregulated PPI network and three modules (d-A, d-B, and d-C) in the downregulated PPI were identified with the threshold of Molecular Complex Detection (MCODE) Molecular Complex Detection (MCODE) score ≥4 and nodes ≥6. The genes in module up-A were significantly enriched in neuroactive ligand–receptor interactions and the calcium signaling pathway. The genes in module d-A were enriched in four pathways, including oxidative phosphorylation and Parkinson’s disease. DEGs, such as FOS, FN1, PPP1CC, and CYP2B6, may be used as potential targets for CRC diagnosis and treatment.
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Affiliation(s)
- Yubin Kou
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, People's Republic of China ; Department of General Surgery, Shuguang Hospital Baoshan Branch, Shanghai, People's Republic of China
| | - Suya Zhang
- Department of Neurology, Shuguang Hospital Baoshan Branch, Shanghai, People's Republic of China
| | - Xiaoping Chen
- Department of General Surgery, Shuguang Hospital Baoshan Branch, Shanghai, People's Republic of China
| | - Sanyuan Hu
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, People's Republic of China
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Zheng H, Zhao Y. Association of CYP1A1 MspI polymorphism in the esophageal cancer risk: a meta-analysis in the Chinese population. Eur J Med Res 2015; 20:46. [PMID: 25886559 PMCID: PMC4381416 DOI: 10.1186/s40001-015-0135-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 03/12/2015] [Indexed: 11/21/2022] Open
Abstract
Background Although many epidemiologic studies have investigated the CYP1A1 MspI gene polymorphisms and their associations with esophageal cancer (EC), definite conclusions cannot be drawn. To clarify the effects of CYP1A1 MspI polymorphisms on the risk of EC, a meta-analysis was performed in Chinese population. Methods Related studies were identified from PubMed, Springer Link, Ovid, Chinese Wanfang Data Knowledge Service Platform, Chinese National Knowledge Infrastructure (CNKI), and Chinese Biology Medicine (CBM) till October 2014. Pooled ORs and 95% CIs were used to assess the strength of the associations. Results A total of 13 studies including 1,519 EC cases and 1,962 controls were involved in this meta-analysis. Overall, significant association was found between CYP1A1 MspI polymorphism and EC risk when all studies in the Chinese population pooled into this meta-analysis (C vs. T: OR = 1.25, 95% CI = 1.04 to 1.51; CC + CT vs. TT: OR = 1.35, 95% CI = 1.06 to 1.72; CC vs. TT + CT: OR = 1.35, 95% CI = 1.03 to 1.76). When we performed stratified analyses by geographical locations, histopathology type, and source of control, significantly increased risks were found in North China (C vs. T: OR = 1.38, 95% CI = 1.12 to 1.70; CC vs. TT: OR = 1.72, 95% CI = 1.16 to 2.56; CC + CT vs. TT: OR = 1.52, 95% CI = 1.14 to 2.02; CC vs. TT + CT: OR = 1.55, 95% CI = 1.17 to 2.06), in the population-based studies (C vs. T: OR = 1.22, 95% CI = 1.05 to 1.42; CC vs. TT: OR = 1.38, 95% CI = 1.02 to 1.88; CC + CT vs. TT: OR = 1.36, 95% CI = 1.10 to 1.69; CC vs. TT + CT: OR = 1.43, 95% CI = 1.13 to 1.81) and ESCC (C vs. T: OR = 1.17, 95% CI = 1.04 to 1.32; CC + CT vs. TT: OR = 1.28, 95% CI = 1.08 to 1.52). Conclusions This meta-analysis provides the evidence that CYP1A1 MspI polymorphism may contribute to the EC development in the Chinese population.
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Affiliation(s)
- Hui Zheng
- Nursing Department, Tai'an Tumor Hospital, Tai'an City, No. 262 Taidong Road, Shandong Province, 271000, China.
| | - Yun Zhao
- Pathology Department, Tai'an Tumor Hospital, Tai'an City, No. 262 Taidong Road, Shandong Province, 271000, China.
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Effects of cigarette smoking on metabolism and effectiveness of systemic therapy for lung cancer. J Thorac Oncol 2015; 9:917-926. [PMID: 24926542 DOI: 10.1097/jto.0000000000000191] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Cigarette smoke associated polycyclic aromatic hydrocarbons can induce key drug-metabolizing enzymes of cytochrome P450 and isoforms of the glucuronyl transferases families. These enzymes metabolize several systemic therapies for lung cancer. Induction of these enzymes may lead to accelerated clearance with resultant impact on systemic therapy efficacy and toxicity in smokers compared with nonsmokers. This article reviews published literature regarding the influence of smoking as it relates to alteration of metabolism of systemic therapy in lung cancer. METHODS A structured search of the National Library of Medicine's PubMed/MEDLINE identified relevant articles. Data were abstracted and analyzed to summarize the findings. RESULTS Studies that analyzed pharmacokinetic data were prospective. Smokers receiving erlotinib exhibited rapid clearance, requiring a higher dose to reach equivalent systemic exposure compared with nonsmokers. Smokers receiving irinotecan also demonstrated increased clearance and lower systemic exposure. There was no difference in clearance of paclitaxel or docetaxel in smokers. Chemotherapy-associated neutropenia was worse in nonsmokers compared with smokers in patients treated with paclitaxel, docetaxel, irinotecan, and gemcitabine. CONCLUSIONS Systemic therapy for lung cancer has a narrow therapeutic index such that small changes in plasma concentrations or exposure in smokers may result in suboptimal therapy and poor outcomes. Smoking cessation must be emphasized at each clinical visit. However, prospective trials should take into consideration the effects of smoking history on drug pharmacokinetics and efficacy. The metabolizing enzyme phenotype in smokers may require individualized dose algorithms for specific agents.
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Jeon SH, Jin B, Kim SK, Lee HM. Conformations of adducts formed between the genotoxic benzo[a]pyrene-7,8-dione and 2′-deoxycytidine. J Biomol Struct Dyn 2015; 33:2059-68. [DOI: 10.1080/07391102.2014.989407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Aldawsari FS, Elshenawy OH, El Gendy MAM, Aguayo-Ortiz R, Baksh S, El-Kadi AOS, Velázquez-Martínez CA. Design and synthesis of resveratrol–salicylate hybrid derivatives as CYP1A1 inhibitors. J Enzyme Inhib Med Chem 2014; 30:884-95. [DOI: 10.3109/14756366.2014.979347] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Fahad S. Aldawsari
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada,
| | - Osama H. Elshenawy
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada,
| | - Mohamed A. M. El Gendy
- Experimental Oncology Unit, Department of Oncology, University of Alberta, Edmonton, Alberta, Canada,
- Department of Pharmacognosy, Pharmaceutical Sciences Division, Natural Research Centre, Dokki, Giza, Egypt,
| | - Rodrigo Aguayo-Ortiz
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, México,
| | - Shairaz Baksh
- Department of Pediatrics, Oncology and Biochemistry, University of Alberta, Edmonton, Alberta, Canada, and
- Alberta Inflammatory Bowel Disease Consortium, Alberta, Canada
| | - Ayman O. S. El-Kadi
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada,
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Wang YY, Yang J, Liu H, Lin FQ, Shi JS, Zhang F. Effects of tetrahydroxystilbene glucoside on mouse liver cytochrome P450 enzyme expressions. Xenobiotica 2014; 45:279-85. [PMID: 25350237 DOI: 10.3109/00498254.2014.976779] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
1. To investigate the effects of tetrahydroxystilbene glucoside (TSG), the main active component of Polygonum multiflorum, on mouse liver cytochrome P450 (Cyp) enzyme protein expressions. Male mice were randomly divided into the control, TSG low (10 mg/kg) and high dose (40 mg/kg) groups. After TSG intragastrical administration for 3, 5 and 7 d, mice were sacrificed and the mouse body and liver weight were detected. The Cyp enzymes and various transcription factors such as AhR, PXR and PPARα protein expressions in mouse livers were measured by Western blotting assay. 2. No significant difference of mouse body and liver weight between the control and TSG treatment groups was detected. Additionally, TSG decreased Cyp1a2 and Cyp2e1 protein expressions after TSG treatment for 3, 5 and 7 d, respectively. Moreover, TSG suppressed Cyp3a11 protein expression after TSG treatment for 5 and 7 d. Furthermore, TSG high dose inhibited AhR and PXR protein expressions after TSG treatment for 5 and 7 d, while both TSG low dose and high dose obviously decreased PPARα protein level from TSG treatment for 3 d. 3. TSG has inhibitory effects on mouse liver Cyp1a2, Cyp2e1 and Cyp3a11 protein expressions through the suppression of AhR, PXR and PPARα activation.
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Affiliation(s)
- Yan-Ying Wang
- Key Lab of Basic Pharmacology of Ministry of Education, Zunyi Medical University , Zunyi, Guizhou , P.R. China and
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Park YC, Lee S, Cho MH. The Simplest Flowchart Stating the Mechanisms for Organic Xenobiotics-induced Toxicity: Can it Possibly be Accepted as a "Central Dogma" for Toxic Mechanisms? Toxicol Res 2014; 30:179-84. [PMID: 25343011 PMCID: PMC4206744 DOI: 10.5487/tr.2014.30.3.179] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 08/29/2014] [Accepted: 09/18/2014] [Indexed: 12/31/2022] Open
Abstract
Xenobiotics causing a variety of toxicity in biological systems could be classified as two types, inorganic and organic chemicals. It is estimated that the organic xenobiotics are responsible for approximately 80~90% of chemical-induced toxicity in human population. In the class for toxicology, we have encountered some difficulties in explaining the mechanisms of toxicity caused especially by organic chemicals. Here, a simple flowchart was introduced for explaining the mechanism of toxicity caused by organic xenobiotics, as the central dogma of molecular biology. This flowchart, referred to as a central dogma, was described based on a view of various aspects as follows: direct-acting chemicals vs. indirect-acting chemicals, cytochrome P450-dependent vs. cytochrome P450-independent biotransformation, reactive intermediates, reactivation, toxicokinetics vs. toxicodynamics, and reversibility vs. irreversibility. Thus, the primary objective of this flowchart is to help better understanding of the organic xenobiotics-induced toxic mechanisms, providing a major pathway for toxicity occurring in biological systems.
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Affiliation(s)
- Yeong-Chul Park
- GLP Center, Center, Catholic University of Daegu, Keongsan, Gyeongsangbuk-do, Korea
| | - Sundong Lee
- Dept. of Preventive Korean Medicine, School of Korean Medicine, Sangji University, Wonju, Korea
| | - Myung-Haing Cho
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul, Korea
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49
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Choi JM, Oh SJ, Lee SY, Im JH, Oh JM, Ryu CS, Kwak HC, Lee JY, Kang KW, Kim SK. HepG2 cells as an in vitro model for evaluation of cytochrome P450 induction by xenobiotics. Arch Pharm Res 2014; 38:691-704. [PMID: 25336106 DOI: 10.1007/s12272-014-0502-6] [Citation(s) in RCA: 212] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 10/15/2014] [Indexed: 01/14/2023]
Abstract
Although various in vitro assays have been developed to evaluate the cytochrome P450 (CYP)-inducing potential of drug candidates, there is a continuing need for the development of a reliable model in drug discovery. The objective of the present study was to compare CYP induction by chemicals in HepG2 cells with Huh7, NKNT-3, and reverted NKNT-3 cells. HepG2 cells showed more similarity to human liver than the other cell lines in comparisons of the expression of cellular proteins. In evaluation of basal CYP activity, Huh7 cells exhibited the highest CYP1A2 and CYP3A4 activity, and HepG2 cells showed the highest CYP2B6 activity. The inducibility of CYP1A2, CYP2B6, and CYP3A4 by prototypical inducers was determined using enzyme assay, immunoblot analysis, and real-time PCR. Among the cells tested, HepG2 cells were highly responsive to CYP inducers, such as 3-methylcholanthrene for CYP1A2 and phenobarbital for CYP2B6 and CYP3A4. Moreover, HepG2 cells were responsive to various CYP1A2, CYP2B6, and CYP3A4 inducers as determined using fluorogenic and LC-MS/MS substrates. Thus, HepG2 cells may be comparable to human hepatocytes for the evaluation of CYP induction or slightly less sensitive. These results suggest HepG2 cells as a cell-based model in screening for CYP inducers in drug discovery.
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Affiliation(s)
- Jong Min Choi
- College of Pharmacy, Chungnam National University, Daejeon, 305-764, Republic of Korea
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50
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Yu KT, Ge C, Xu XF, Zou JC, Zou X, Zhen S. CYP1A1 polymorphism interactions with smoking status in oral cancer risk: evidence from epidemiological studies. Tumour Biol 2014; 35:11183-91. [PMID: 25106409 DOI: 10.1007/s13277-014-2422-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Accepted: 07/29/2014] [Indexed: 11/30/2022] Open
Abstract
The cytochrome CYP1A1 gene has been implicated in the etiology of oral cancer. However, the results have been inconsistent. In this study, a meta-analysis was performed to clarify the associations of polymorphisms in CYP1A1 gene with oral cancer risk. Published literatures from PubMed, MEDLINE, EMBASE, and China National Knowledge infrastructure (CNKI) databases were retrieved. A total of 12 studies were included in this meta-analysis. We found that significant positive associations between CYP1A1*2A polymorphism and oral cancer risk in recessive model (CC vs. TC + TT, OR = 1.93), dominant model (CC + TC vs. TT, OR = 1.33), and additive model (CC vs. TT, OR = 1.97). In subgroup analysis based on the ethnicity of study population, significant associations were found in all three genetic models for Asians (recessive OR = 2.29, 95% CI = .42-3.71; dominant OR = 1.54, 95% CI = 1.03-2.31; additive OR 2.39, 95% CI = 1.47-3.88) but not non-Asians. For the smoking stratification, the result indicated a significant association between CYP1A1*2A polymorphism and oral cancer among the smoking subjects (OR = 1.83, 95% CI = 1.47-2.26). This meta-analysis indicated a marked association of CYP1A1*2A polymorphisms with oral cancer risk, particularly among Asians, whereas there were significant interactions between the polymorphisms and cigarette smoking on oral cancer risk.
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Affiliation(s)
- Kai-Tao Yu
- Department of oral and maxillofacial surgery, The 307 Hospital of the Academy of Military Medical Sciences, Beijing, 100071, People's Republic of China
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