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Tagorti G, Yalçın B, Güneş M, Kurşun AY, Kaya B. Genotoxic and genoprotective effects of phytoestrogens: a systematic review. Drug Chem Toxicol 2023; 46:1242-1254. [PMID: 36606318 DOI: 10.1080/01480545.2022.2146134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 08/17/2022] [Accepted: 09/11/2022] [Indexed: 01/07/2023]
Abstract
Phytoestrogens are xenoestrogens found in plants with a myriad of health benefits. However, various studies reported the genotoxic effects of these substances. Thus, we reviewed in vitro and in vivo studies published in PubMed, Scopus, and Web of Science to evaluate the genotoxic and the genoprotective potential of phytoestrogens. Only studies written in English and intended to study commercially available phytoestrogens were included. The screening was performed manually. Moreover, the underlying mechanism of action of phytoestrogens was described. Around half of those studies (43%) reported genoprotective results. However, several studies revealed positive results for genotoxicity with specific model organisms and with dose/concentration dependence. The assessment of the selected articles showed substantial differences in the used concentrations and a biphasic response was recorded in some phytoestrogens. As far as we know, this is the first study to assess the genotoxic and genoprotective effects of phytoestrogens systematically.
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Affiliation(s)
- Ghada Tagorti
- Department of Biology, Akdeniz University, Antalya, Turkey
| | - Burçin Yalçın
- Department of Biology, Akdeniz University, Antalya, Turkey
| | - Merve Güneş
- Department of Biology, Akdeniz University, Antalya, Turkey
| | | | - Bülent Kaya
- Department of Biology, Akdeniz University, Antalya, Turkey
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2
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Morais T, Moleiro P, Leite C, Coppola F, Pinto J, Henriques B, Soares AMVM, Pereira E, Freitas R. Ecotoxicological impacts of metals in single and co-exposure on mussels: Comparison of observable and predicted results. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 881:163165. [PMID: 37003315 DOI: 10.1016/j.scitotenv.2023.163165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/22/2023] [Accepted: 03/26/2023] [Indexed: 06/01/2023]
Abstract
Used in high-tech and everyday products, mercury (Hg), cobalt (Co), and nickel (Ni) are known to be persistent and potentially toxic elements that pose a serious threat to the most vulnerable ecosystems. Despite being on the Priority Hazardous Substances List, existing studies have only assessed the individual toxicity of Co, Ni and Hg in aquatic organisms, with a focus on the latter, ignoring potential synergistic effects that may occur in real-world contamination scenarios. The present study evaluated the responses of the mussel Mytilus galloprovincialis, recognized as a good bioindicator of pollution, after exposure to Hg (25 μg/L), Co (200 μg/L) and Ni (200 μg/L) individually, and to the mixture of the three metals at the same concentration. The exposure lasted 28 days at 17 ± 1 °C, after which metal accumulation and a set of biomarkers related to organisms' metabolic capacity and oxidative status were measured. The results showed that the mussels could accumulate metals in both single- and co-exposure conditions (bioconcentration factors between 115 and 808) and that exposure to metals induced the activation of antioxidant enzymes. Although Hg concentration in organisms in the mixture decreased significantly compared to single exposure (9.4 ± 0.8 vs 21 ± 0.7 mg/kg), the negative effects increased in the mixture of the three elements, resulting in depletion of energy reserves, activation of antioxidants and detoxification enzymes, and cellular damage, with a hormesis response pattern. This study underscores the importance of risk assessment studies that include the effects of the combination of pollutants and demonstrates the limitations of applying models to predict metal mixture toxicity, especially when a hormesis response is given by the organisms.
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Affiliation(s)
- Tiago Morais
- Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Pedro Moleiro
- Departamento de Química, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Carla Leite
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Francesca Coppola
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - João Pinto
- Departamento de Química & LAQV-REQUIMTE, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Bruno Henriques
- Departamento de Química & LAQV-REQUIMTE, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Amadeu M V M Soares
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Eduarda Pereira
- Departamento de Química & LAQV-REQUIMTE, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Rosa Freitas
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
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3
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Huang S, Qi B, Yang L, Wang X, Huang J, Zhao Y, Hu Y, Xiao W. Phytoestrogens, novel dietary supplements for breast cancer. Biomed Pharmacother 2023; 160:114341. [PMID: 36753952 DOI: 10.1016/j.biopha.2023.114341] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 02/08/2023] Open
Abstract
While endocrine therapy is considered as an effective way to treat breast cancer, it still faces many challenges, such as drug resistance and individual discrepancy. Therefore, novel preventive and therapeutic modalities are still in great demand to decrease the incidence and mortality rate of breast cancer. Numerous studies suggested that G protein-coupled estrogen receptor (GPER), a membrane estrogen receptor, is a potential target for breast cancer prevention and treatment. It was also shown that not only endogenous estrogens can activate GPERs, but many phytoestrogens can also function as selective estrogen receptor modulators (SERMs) to interact GPERs. In this review, we discussed the possible mechanisms of GPERs pathways and shed a light of developing novel phytoestrogens based dietary supplements against breast cancers.
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Affiliation(s)
- Shuo Huang
- School of Clinical Medicine, Chengdu University of TCM, Chengdu 610072, Sichuan, China
| | - Baowen Qi
- South China Hospital of Shenzhen University, No. 1, Fuxin Road, Longgang District, Shenzhen, 518116, P. R. China; BioCangia Inc., 205 Torbay Road, Markham, ON L3R 3W4, Canada
| | - Ling Yang
- School of Clinical Medicine, Chengdu University of TCM, Chengdu 610072, Sichuan, China
| | - Xue Wang
- School of Clinical Medicine, Chengdu University of TCM, Chengdu 610072, Sichuan, China
| | - Jing Huang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Ya Zhao
- School of Clinical Medicine, Chengdu University of TCM, Chengdu 610072, Sichuan, China
| | - Yonghe Hu
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China; Department of Pharmacy, The General Hospital of Western Theater Command, Chengdu 610083, Sichuan, China.
| | - Wenjing Xiao
- Department of Pharmacy, The General Hospital of Western Theater Command, Chengdu 610083, Sichuan, China.
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4
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Resveratrol from Dietary Supplement to a Drug Candidate: An Assessment of Potential. Pharmaceuticals (Basel) 2022; 15:ph15080957. [PMID: 36015105 PMCID: PMC9412308 DOI: 10.3390/ph15080957] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/23/2022] [Accepted: 07/26/2022] [Indexed: 12/10/2022] Open
Abstract
Resveratrol (RVT) is a well known phyto-chemical and is widely used in dietary supplements and botanical products. It shows a wide range of pharmacological/beneficial effects. Therefore, it can be a potential candidate to be developed as phyto-pharmaceutical. Multiple diseases are reported to be treated by the therapeutic effect of RVT since it has antioxidant, anti-cancer activity and anti-inflammatory activities. It also has a major role in diabetes, arthritis, cardiac disorder and platelet aggregation etc. The major requirements are establishments regarding safety, efficacy profile and physicochemical characterization. As it is already being consumed in variable maximum daily dose, there should not be a major safety concern but the dose needs to be established for different indications. Clinical trials are also being reported in different parts of the world. Physicochemical properties of the moiety are also well reported. Moreover, due to its beneficial effect on health it leads to the development of some intellectual property in the form of patents.
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5
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Velázquez-Ulloa NA, Heres-Pulido ME, Santos-Cruz LF, Durán-Díaz A, Castañeda-Partida L, Browning A, Carmona-Alvarado C, Estrada-Guzmán JC, Ferderer G, Garfias M, Gómez-Loza B, Magaña-Acosta MJ, Perry HH, Dueñas-García IE. Complex interactions between nicotine and resveratrol in the Drosophila melanogaster wing spot test. Heliyon 2022; 8:e09744. [PMID: 35770151 PMCID: PMC9234589 DOI: 10.1016/j.heliyon.2022.e09744] [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: 12/08/2021] [Revised: 03/30/2022] [Accepted: 06/14/2022] [Indexed: 11/28/2022] Open
Abstract
Nicotine (NIC) and resveratrol (RES) are chemicals in tobacco and wine, respectively, that are widely consumed concurrently worldwide. NIC is an alkaloid known to be toxic, addictive and to produce oxidative stress, while RES is thought of as an antioxidant with putative health benefits. Oxidative stress can induce genotoxic damage, yet few studies have examined whether NIC is genotoxic in vivo. In vitro studies have shown that RES can ameliorate deleterious effects of NIC. However, RES has been reported to have both antioxidant and pro-oxidant effects, and an in vivo study reported that 0.011 mM RES was genotoxic. We used the Drosophila melanogaster wing spot test to determine whether NIC and RES, first individually and then in combination, were genotoxic and/or altered the cell division. We hypothesized that RES would modulate NIC’s effects. NIC was genotoxic in the standard (ST) cross in a concentration-independent manner, but not genotoxic in the high bioactivation (HB) cross. RES was not genotoxic in either the ST or HB cross at the concentrations tested. We discovered a complex interaction between NIC and RES. Depending on concentration, RES was protective of NIC’s genotoxic damage, RES had no interaction with NIC, or RES had an additive or synergistic effect, increasing NIC’s genotoxic damage. Most NIC, RES, and NIC/RES combinations tested altered the cell division in the ST and HB crosses. Because we used the ST and HB crosses, we demonstrated that genotoxicity and cell division alterations were modulated by the xenobiotic metabolism. These results provide evidence of NIC’s genotoxicity in vivo at specific concentrations. Moreover, NIC’s genotoxicity can be modulated by its interaction with RES in a complex manner, in which their interaction can lead to either increasing NIC’s damage or protecting against it. Nicotine was genotoxic at specific concentrations in the Drosophila wing spot test. Resveratrol protected against nicotine’s genotoxic effects at some concentrations. Resveratrol increased nicotine’s genotoxicity at specific concentrations. Nicotine and resveratrol have a complex interaction in vivo. Studying chemicals in combination in vivo may uncover unexpected interactions.
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Affiliation(s)
| | - M E Heres-Pulido
- Genetic Toxicology Laboratory, Biology, FES Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Los Barrios N 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - L F Santos-Cruz
- Genetic Toxicology Laboratory, Biology, FES Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Los Barrios N 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - A Durán-Díaz
- Mathematics, Biology, FES Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Los Barrios N 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - L Castañeda-Partida
- Genetic Toxicology Laboratory, Biology, FES Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Los Barrios N 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - A Browning
- Biology Department, Lewis & Clark College, Portland, OR, USA
| | - C Carmona-Alvarado
- Genetic Toxicology Laboratory, Biology, FES Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Los Barrios N 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - J C Estrada-Guzmán
- Genetic Toxicology Laboratory, Biology, FES Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Los Barrios N 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - G Ferderer
- Biology Department, Lewis & Clark College, Portland, OR, USA
| | - M Garfias
- Biology Department, Lewis & Clark College, Portland, OR, USA.,Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, AZ, USA
| | - B Gómez-Loza
- Genetic Toxicology Laboratory, Biology, FES Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Los Barrios N 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - M J Magaña-Acosta
- Genetic Toxicology Laboratory, Biology, FES Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Los Barrios N 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico.,Department of Developmental Genetics & Molecular Physiology, Universidad Nacional Autónoma de México. Av Universidad, 2001, Col Chamilpa, Cuernavaca, Mexico
| | - H H Perry
- Biology Department, Lewis & Clark College, Portland, OR, USA
| | - I E Dueñas-García
- Genetic Toxicology Laboratory, Biology, FES Iztacala, Universidad Nacional Autónoma de Mexico (UNAM), Los Barrios N 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
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Islam BU, Suhail M, Khan MK, Zughaibi TA, Alserihi RF, Zaidi SK, Tabrez S. Polyphenols as anticancer agents: Toxicological concern to healthy cells. Phytother Res 2021; 35:6063-6079. [PMID: 34679214 DOI: 10.1002/ptr.7216] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 06/13/2021] [Accepted: 06/24/2021] [Indexed: 12/13/2022]
Abstract
Polyphenols are a group of diverse chemical compounds present in a wide range of plants. Various biological properties such as antiallergic, antiviral, antibacterial, anticarcinogenic, antiinflammatory, antithrombotic, vasodilatory, and hepatoprotective effect of different polyphenols have been reported in the scientific literature. The major classes of polyphenols are flavonoids, stilbenoids, lignans, and polyphenolic acids. Flavonoids are a large class of food constituents comprising flavones, isoflavanones, flavanones, flavonols, catechins, and anthocyanins sub-classes. Even with seemingly broad biological activities, their use is minimal clinically. Among the other concurrent problems such as limited bioavailability, rapid metabolism, untargeted delivery, the toxicity associated with these polyphenols has been a topic of concern lately. These polyphenols have been reported to result in different forms of toxicity that include organ toxicity, genotoxicity, mutagenicity, cytotoxicity, etc. In the present article, we have tried to unravel the toxicological aspect of these polyphenols to healthy cells. Further high-quality studies are needed to establish the clinical efficacy and toxicology concern leading to further exploration of these polyphenols.
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Affiliation(s)
- Badar Ul Islam
- Department of Biochemistry, J N Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh, India
| | - Mohd Suhail
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohammed Kaleem Khan
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Torki A Zughaibi
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Raed F Alserihi
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.,3D Bioprinting Unit, Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Syed Kashif Zaidi
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Shams Tabrez
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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7
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Jhanji M, Rao CN, Sajish M. Towards resolving the enigma of the dichotomy of resveratrol: cis- and trans-resveratrol have opposite effects on TyrRS-regulated PARP1 activation. GeroScience 2021; 43:1171-1200. [PMID: 33244652 PMCID: PMC7690980 DOI: 10.1007/s11357-020-00295-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 10/28/2020] [Indexed: 02/07/2023] Open
Abstract
Unlike widely perceived, resveratrol (RSV) decreased the average lifespan and extended only the replicative lifespan in yeast. Similarly, although not widely discussed, RSV is also known to evoke neurite degeneration, kidney toxicity, atherosclerosis, premature senescence, and genotoxicity through yet unknown mechanisms. Nevertheless, in vivo animal models of diseases and human clinical trials demonstrate inconsistent protective and beneficial effects. Therefore, the mechanism of action of RSV that elicits beneficial effects remains an enigma. In a previously published work, we demonstrated structural similarities between RSV and tyrosine amino acid. RSV acts as a tyrosine antagonist and competes with it to bind to human tyrosyl-tRNA synthetase (TyrRS). Interestingly, although both isomers of RSV bind to TyrRS, only the cis-isomer evokes a unique structural change at the active site to promote its interaction with poly-ADP-ribose polymerase 1 (PARP1), a major determinant of cellular NAD+-dependent stress response. However, retention of trans-RSV in the active site of TyrRS mimics its tyrosine-bound conformation that inhibits the auto-poly-ADP-ribos(PAR)ylation of PARP1. Therefore, we proposed that cis-RSV-induced TyrRS-regulated auto-PARylation of PARP1 would contribute, at least in part, to the reported health benefits of RSV through the induction of protective stress response. This observation suggested that trans-RSV would inhibit TyrRS/PARP1-mediated protective stress response and would instead elicit an opposite effect compared to cis-RSV. Interestingly, most recent studies also confirmed the conversion of trans-RSV and its metabolites to cis-RSV in the physiological context. Therefore, the finding that cis-RSV and trans-RSV induce two distinct conformations of TyrRS with opposite effects on the auto-PARylation of PARP1 provides a potential molecular basis for the observed dichotomic effects of RSV under different experimental paradigms. However, the fact that natural RSV exists as a diastereomeric mixture of its cis and trans isomers and cis-RSV is also a physiologically relevant isoform has not yet gained much scientific attention.
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Affiliation(s)
- Megha Jhanji
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC, 29208, USA
| | - Chintada Nageswara Rao
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC, 29208, USA
| | - Mathew Sajish
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC, 29208, USA.
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8
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Medrano-Padial C, Prieto AI, Puerto M, Pichardo S. In vitro assessment of the mutagenic and genotoxic potential of a pure stilbene extract. Food Chem Toxicol 2021; 150:112065. [PMID: 33596453 DOI: 10.1016/j.fct.2021.112065] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 01/28/2021] [Accepted: 02/10/2021] [Indexed: 02/06/2023]
Abstract
Stilbenes are secondary metabolites of great interest produced by many plant species due to their important bioactive properties. These phytochemicals have become of increasing interest in the wine industry as a natural alternative to sulphur dioxide, which has been associated with human health risks. However, there is still little toxicological information on stilbenes and the results thus far have been contradictory. Considering the key role of genotoxicity in risk assessment and the need to offer safe products in the market, the aim of this study was to assess the mutagenic and genotoxic potential of a stilbene extract with 99% purity (ST-99 extract). A complete series of different in vitro tests (Ames test, micronucleus (MN) test, and standard and enzyme-modified comet assays) was performed before its use as a preservative in wines. The ST-99 extract induces a significant increase of binucleated cells with micronuclei only in presence of the metabolic fraction S9 at the highest concentration assayed. Neither the Ames test nor the comet assay revealed the extract's genotoxic potential. Further studies are necessary, including in vivo assays, to ensure consumer safety before it can be used.
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Affiliation(s)
- C Medrano-Padial
- Area of Toxicology, School of Pharmacy, Universidad de Sevilla, Profesor García González nº2, 41012, Seville, Spain
| | - A I Prieto
- Area of Toxicology, School of Pharmacy, Universidad de Sevilla, Profesor García González nº2, 41012, Seville, Spain.
| | - M Puerto
- Area of Toxicology, School of Pharmacy, Universidad de Sevilla, Profesor García González nº2, 41012, Seville, Spain
| | - S Pichardo
- Area of Toxicology, School of Pharmacy, Universidad de Sevilla, Profesor García González nº2, 41012, Seville, Spain
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9
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Chen FP, Chien MH. Effects of phytoestrogens on the activity and growth of primary breast cancer cells ex vivo. J Obstet Gynaecol Res 2019; 45:1352-1362. [PMID: 31099163 DOI: 10.1111/jog.13982] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 04/06/2019] [Indexed: 11/25/2022]
Abstract
AIM To explore the ex vivo effects of phytoestrogens on primary human breast cancer cells. METHODS Breast cancer cells were obtained from patients who underwent primary breast cancer surgery, which were treated with 10-8 M 17β-estradiol (E2 ), one of three phytoestrogens (genistein, resveratrol and quercetin, 10-7 M), and a combination of E2 and one of the three phytoestrogens for 48 h. These cells were then extracted for viability and apoptosis assay. The proteins involved in the proliferative and apoptotic pathways were evaluated by western blot analysis. RESULTS Human breast cancer cell viability was inhibited by all phytoestrogens but induced by E2 with or without phytoestrogen. Apoptotic cells, as well as the proteins involved in apoptotic pathway and estrogen receptor (ER) β, were significantly increased in the cells treated with phytoestrogen alone. The use of E2 with or without a phytoestrogen revealed completely opposite results. The proteins involved in the proliferative pathway and ER α expression were all increased in the cultures with E2 with or without phytoestrogens. CONCLUSION In the presence of E2 , these phytoestrogens lose the effects of suppressing breast cancer cells; contrastingly, induce growth stimulatory effects by inhibiting apoptosis and stimulating proliferation in primary breast cancer cells. Thus, the effects of phytoestrogens on breast cancer should be considered as E2 still present in breast cancer tissue.
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Affiliation(s)
- Fang-Ping Chen
- Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan.,Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Mei-Hua Chien
- Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, Keelung, Taiwan.,Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
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10
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Haque MN, Eom HJ, Nam SE, Shin YK, Rhee JS. Chlorothalonil induces oxidative stress and reduces enzymatic activities of Na+/K+-ATPase and acetylcholinesterase in gill tissues of marine bivalves. PLoS One 2019; 14:e0214236. [PMID: 30964867 PMCID: PMC6456286 DOI: 10.1371/journal.pone.0214236] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 03/09/2019] [Indexed: 12/19/2022] Open
Abstract
Chlorothalonil is a thiol-reactive antifoulant that disperses widely and has been found in the marine environment. However, there is limited information on the deleterious effects of chlorothalonil in marine mollusks. In this study, we evaluated the effects of chlorothalonil on the gill tissues of the Pacific oyster, Crassostrea gigas and the blue mussel, Mytilus edulis after exposure to different concentrations of chlorothalonil (0.1, 1, and 10 μg L−1) for 96 h. Following exposure to 1 and/or 10 μg L−1 of chlorothalonil, malondialdehyde (MDA) levels significantly increased in the gill tissues of C. gigas and M. edulis compared to that in the control group at 96 h. Similarly, glutathione (GSH) levels were significantly affected in both bivalves after chlorothalonil exposure. The chlorothalonil treatment caused a significant time- and concentration-dependent increase in the activity of enzymes, such as catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), and glutathione reductase (GR), in the antioxidant defense system. Furthermore, 10 μg L−1 of chlorothalonil resulted in significant inhibitions in the enzymatic activity of Na+/K+-ATPase and acetylcholinesterase (AChE). These results suggest that chlorothalonil induces potential oxidative stress and changes in osmoregulation and the cholinergic system in bivalve gill tissues. This information will be a useful reference for the potential toxicity of chlorothalonil in marine bivalves.
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Affiliation(s)
- Md. Niamul Haque
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon, South Korea
- Research Institute of Basic Sciences, Incheon National University, Incheon, South Korea
| | - Hye-Jin Eom
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon, South Korea
| | - Sang-Eun Nam
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon, South Korea
| | - Yun Kyung Shin
- Southeast Sea Fisheries Research Institute, National Institute of Fisheries Science, Tongyeong, South Korea
| | - Jae-Sung Rhee
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon, South Korea
- Research Institute of Basic Sciences, Incheon National University, Incheon, South Korea
- Institute of Green Environmental Research Center, Yeonsugu, Incheon, South Korea
- * E-mail:
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11
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Basu P, Maier C. Phytoestrogens and breast cancer: In vitro anticancer activities of isoflavones, lignans, coumestans, stilbenes and their analogs and derivatives. Biomed Pharmacother 2018; 107:1648-1666. [DOI: 10.1016/j.biopha.2018.08.100] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/17/2018] [Accepted: 08/17/2018] [Indexed: 01/11/2023] Open
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12
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Cipolletti M, Solar Fernandez V, Montalesi E, Marino M, Fiocchetti M. Beyond the Antioxidant Activity of Dietary Polyphenols in Cancer: the Modulation of Estrogen Receptors (ERs) Signaling. Int J Mol Sci 2018; 19:E2624. [PMID: 30189583 PMCID: PMC6165334 DOI: 10.3390/ijms19092624] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 08/31/2018] [Accepted: 09/03/2018] [Indexed: 02/07/2023] Open
Abstract
The potential "health benefits" of dietary polyphenols have been ascribed to their direct antioxidant activity and their impact on the regulation of cell and tissue redox balance. However, because of the relative poor bioavailability of many of these compounds, their effects could not be easily explained by the antioxidant action, which may occur only at high circulating and tissue concentrations. Therefore, many efforts have been put forward to clarify the molecular mechanisms underlining the biological effect of polyphenols in physiological and pathological conditions. Polyphenols' bioavailability, metabolism, and their effects on enzyme, membrane, and/or nuclear receptors and intracellular transduction mechanisms may define the overall impact of these compounds on cancer risk and progression, which is still debated and not yet clarified. Polyphenols are able to bind to estrogen receptor α (ERα) and β (ERβ), and therefore induce biological effects in human cells through mimicking or inhibiting the action of endogenous estrogens, even at low concentrations. In this work, the role and effects of food-contained polyphenols in hormone-related cancers will be reviewed, mainly focusing on the different polyphenols' mechanisms of action with particular attention on their estrogen receptor-based effects, and on the consequences of such processes on tumor progression and development.
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Affiliation(s)
- Manuela Cipolletti
- Department of Science, University Roma Tre, Viale Guglielmo Marconi 446, I-00146 Roma, Italy.
| | | | - Emiliano Montalesi
- Department of Science, University Roma Tre, Viale Guglielmo Marconi 446, I-00146 Roma, Italy.
| | - Maria Marino
- Department of Science, University Roma Tre, Viale Guglielmo Marconi 446, I-00146 Roma, Italy.
| | - Marco Fiocchetti
- Department of Science, University Roma Tre, Viale Guglielmo Marconi 446, I-00146 Roma, Italy.
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13
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Oliveira MF, Geihs MA, França TFA, Moreira DC, Hermes-Lima M. Is "Preparation for Oxidative Stress" a Case of Physiological Conditioning Hormesis? Front Physiol 2018; 9:945. [PMID: 30116197 PMCID: PMC6082956 DOI: 10.3389/fphys.2018.00945] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 06/28/2018] [Indexed: 01/01/2023] Open
Affiliation(s)
- Marcus F Oliveira
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcio A Geihs
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Thiago F A França
- Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Daniel C Moreira
- Área de Morfologia, Faculdade de Medicina, Universidade de Brasília, Brasilia, Brazil.,Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Brasilia, Brazil
| | - Marcelo Hermes-Lima
- Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Brasilia, Brazil
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14
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Ferreira CM, Oliveira MP, Paes MC, Oliveira MF. Modulation of mitochondrial metabolism as a biochemical trait in blood feeding organisms: the redox vampire hypothesis redux. Cell Biol Int 2018; 42:683-700. [PMID: 29384241 DOI: 10.1002/cbin.10945] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 01/27/2018] [Indexed: 12/31/2022]
Abstract
Hematophagous organisms undergo remarkable metabolic changes during the blood digestion process, increasing fermentative glucose metabolism, and reducing respiratory rates, both consequence of functional mitochondrial remodeling. Here, we review the pathways involved in energy metabolism and mitochondrial functionality in a comparative framework across different hematophagous species, and consider how these processes regulate redox homeostasis during blood digestion. The trend across distinct species indicate that a switch in energy metabolism might represent an important defensive mechanism to avoid the potential harmful interaction of oxidants generated from aerobic energy metabolism with products derived from blood digestion. Indeed, in insect vectors, blood feeding transiently reduces respiratory rates and oxidant production, irrespective of tissue and insect model. On the other hand, a different scenario is observed in several unrelated parasite species when exposed to blood digestion products, as respiratory rates reduce and mitochondrial oxidant production increase. The emerging picture indicates that re-wiring of energy metabolism, through reduced mitochondrial function, culminates in improved tolerance to redox insults and seems to represent a key step for hematophagous organisms to cope with the overwhelming and potentially toxic blood meal.
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Affiliation(s)
- Caroline M Ferreira
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, RJ, 21941-590, Brazil
| | - Matheus P Oliveira
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, RJ, 21941-590, Brazil.,Department of Integrative Biology and Physiology, University of California, Los Angeles, CA, 90095, USA
| | - Marcia C Paes
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, RJ, 21941-590, Brazil.,Instituto de Biologia Roberto Alcântara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, 20551-030, Brazil
| | - Marcus F Oliveira
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-590, Brazil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, RJ, 21941-590, Brazil
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15
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Guo X, Ni J, Dai X, Zhou T, Yang G, Xue J, Wang X. Biphasic regulation of spindle assembly checkpoint by low and high concentrations of resveratrol leads to the opposite effect on chromosomal instability. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2018; 825:19-30. [PMID: 29307372 DOI: 10.1016/j.mrgentox.2017.11.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 10/02/2017] [Accepted: 11/07/2017] [Indexed: 01/14/2023]
Abstract
Resveratrol (RSV) is a naturally occurring polyphenolic phytoalexin possessing numerous health-promoting effects. Chromosomal instability (CIN), usually results from defective spindle assembly checkpoint (SAC), is a major contributor to many diseases. While it's recently recognized that RSV exhibits a nonlinear dose response for disease prevention, whether it's the case for its role in CIN remains unknown. Here, we investigated the potential of a broad range of RSV concentrations (0.01-100μM) on CIN and the underlying mechanisms in human normal colon epithelial NCM460 cells. CIN was measured by cytokinesis-block micronucleus assay; mitotic fidelity was determined by aberrant mitosis analysis; SAC activity was assessed by nocodazole-challenge assay, and the expression of SAC genes was examined by RT-qPCR. We found that 0.1μM RSV significantly reduced CIN (P<0.01), while 100μM RSV significantly induced it (P<0.05). Mitotic infidelity was significantly prevented by 0.1μM RSV but promoted by 100μM RSV (P<0.05 for both). Moreover, the function of SAC was sustained and impaired by 0.1μM and 100μM RSV, respectively. Several SAC genes, including Aurora-B, Aurora-C, Plk-1 and CENP-E, were significantly up-regulated and down-regulated by 0.1μM and 100μM RSV, respectively (P<0.05). In conclusion, RSV exhibited a biphasic dose-dependent effect on CIN that was exerted via the regulation of mitotic fidelity through the SAC network. The health implications of these findings were summarized.
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Affiliation(s)
- Xihan Guo
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China; School of Life Sciences, Yunnan University, Kunming, Yunnan, 650091, China
| | - Juan Ni
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China
| | - Xueqin Dai
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China
| | - Tao Zhou
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China
| | - Guofang Yang
- China Gene Health Management Group, Ltd., Shanghai, 200433, China
| | - Jinglun Xue
- China Gene Health Management Group, Ltd., Shanghai, 200433, China
| | - Xu Wang
- School of Life Sciences, The Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Yunnan Normal University, Kunming, Yunnan, 650500, China; School of Life Sciences, Yunnan University, Kunming, Yunnan, 650091, China.
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16
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Uberti F, Morsanuto V, Aprile S, Ghirlanda S, Stoppa I, Cochis A, Grosa G, Rimondini L, Molinari C. Biological effects of combined resveratrol and vitamin D3 on ovarian tissue. J Ovarian Res 2017; 10:61. [PMID: 28915830 PMCID: PMC5602920 DOI: 10.1186/s13048-017-0357-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 09/05/2017] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Resveratrol (3,5,4'-trihydroxy-trans-stilbene) is a natural antioxidant polyphenol able to exert a wide range of biological effect on several tissues. Despite its important beneficial properties, it has a low water solubility, which limits its therapeutic applications in humans. Resveratrol also acts as a phytoestrogen that modulates estrogen receptor (ER)-mediated transcription. In addition, it has been shown that ovarian tissues benefit greatly from vitamin D3, which exerts its beneficial effects through VDR receptors. The aim was to evaluate the cooperative effects of resveratrol combined with vitamin D3 on ovarian cells and tissues and some other organs as well. Moreover, the modulation of specific intracellular pathways involving ER and VDR receptors has been studied. METHODS The experiments were performed both in vitro and in vivo, to analyze cell viability, radical oxygen species production, signal transductions through Western Blot, and resveratrol quantification by HPLC. RESULTS Cell viability, radical oxygen species production, and intracellular pathways have been studied on CHO-K1 cells. Also, the relative mechanism activated following oral intake in female Wistar rats as animal model was investigated, evaluating bioavailability, biodistribution and signal transduction in heart, kidney, liver and ovarian tissues. Both in in vitro and in vivo experiments, resveratrol exerts more evident effects when administered in combination with vitD in ovarian cells, showing a common biphasic cooperative effect: The role of vitamin D3 in maintaining and supporting the biological activity of resveratrol has been clearly observed. Moreover, resveratrol plus vitamin D3 blood concentrations showed a biphasic absorption rate. CONCLUSIONS Such results could be used as a fundamental data for the development of new therapies for gynecological conditions, such as hot-flashes.
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Affiliation(s)
- Francesca Uberti
- Physiology Laboratory, Department of Translational Medicine, UPO, Via Solaroli, 17 28100 Novara, Italy
| | - Vera Morsanuto
- Physiology Laboratory, Department of Translational Medicine, UPO, Via Solaroli, 17 28100 Novara, Italy
| | - Silvio Aprile
- Department of Pharmaceutical Sciences and Drug and Food Biotechnology Center, UPO, Novara, Italy
| | - Sabrina Ghirlanda
- Physiology Laboratory, Department of Translational Medicine, UPO, Via Solaroli, 17 28100 Novara, Italy
| | - Ian Stoppa
- Physiology Laboratory, Department of Translational Medicine, UPO, Via Solaroli, 17 28100 Novara, Italy
| | - Andrea Cochis
- Department of Health Sciences, Medical School, UPO, Novara, Italy
| | - Giorgio Grosa
- Department of Pharmaceutical Sciences and Drug and Food Biotechnology Center, UPO, Novara, Italy
| | - Lia Rimondini
- Department of Health Sciences, Medical School, UPO, Novara, Italy
| | - Claudio Molinari
- Physiology Laboratory, Department of Translational Medicine, UPO, Via Solaroli, 17 28100 Novara, Italy
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17
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Liu Y, Wu X, Hu X, Chen Z, Liu H, Takeda S, Qing Y. Multiple repair pathways mediate cellular tolerance to resveratrol-induced DNA damage. Toxicol In Vitro 2017; 42:130-138. [PMID: 28431926 DOI: 10.1016/j.tiv.2017.04.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 03/01/2017] [Accepted: 04/12/2017] [Indexed: 02/05/2023]
Abstract
Resveratrol (RSV) has been reported to exert health benefits for the prevention and treatment of many diseases, including cancer. The anticancer mechanisms of RSV seem to be complex and may be associated with genotoxic potential. To better understand the genotoxic mechanisms, we used wild-type (WT) and a panel of isogenic DNA-repair deficient DT40 cell lines to identify the DNA damage effects and molecular mechanisms of cellular tolerance to RSV. Our results showed that RSV induced significant formation of γ-H2AX foci and chromosome aberrations (CAs) in WT cells, suggesting direct DNA damage effects. Comparing the survival of WT with isogenic DNA-repair deficient DT40 cell lines demonstrated that single strand break repair (SSBR) deficient cell lines of Parp1-/-, base excision repair (BER) deficient cell lines of Polβ-/-, homologous recombination (HR) mutants of Brca1-/- and Brca2-/- and translesion DNA synthesis (TLS) mutants of Rev3-/- and Rad18-/- were more sensitive to RSV. The sensitivities of cells were associated with enhanced DNA damage comparing the accumulation of γ-H2AX foci and number of CAs of isogenic DNA-repair deficient DT40 cell lines with WT cells. These results clearly demonstrated that RSV-induced DNA damage in DT40 cells, and multiple repair pathways including BER, SSBR, HR and TLS, play critical roles in response to RSV- induced genotoxicity.
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Affiliation(s)
- Ying Liu
- Department of Pharmacology, Key Laboratory of Drug Targeting and Drug Delivery Systems of Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xiaohua Wu
- Department of Pharmacology, Key Laboratory of Drug Targeting and Drug Delivery Systems of Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
| | - Xiaoqing Hu
- Department of Pharmacology, Key Laboratory of Drug Targeting and Drug Delivery Systems of Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ziyuan Chen
- Department of Pharmacology, Key Laboratory of Drug Targeting and Drug Delivery Systems of Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Hao Liu
- Department of Pharmacology, Key Laboratory of Drug Targeting and Drug Delivery Systems of Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Shunichi Takeda
- Department of Radiation Genetics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yong Qing
- Department of Pharmacology, Key Laboratory of Drug Targeting and Drug Delivery Systems of Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
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18
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Balasubramanian S, Othman EM, Kampik D, Stopper H, Hentschel U, Ziebuhr W, Oelschlaeger TA, Abdelmohsen UR. Marine Sponge-Derived Streptomyces sp. SBT343 Extract Inhibits Staphylococcal Biofilm Formation. Front Microbiol 2017; 8:236. [PMID: 28261188 PMCID: PMC5311426 DOI: 10.3389/fmicb.2017.00236] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/03/2017] [Indexed: 01/22/2023] Open
Abstract
Staphylococcus epidermidis and Staphylococcus aureus are opportunistic pathogens that cause nosocomial and chronic biofilm-associated infections. Indwelling medical devices and contact lenses are ideal ecological niches for formation of staphylococcal biofilms. Bacteria within biofilms are known to display reduced susceptibilities to antimicrobials and are protected from the host immune system. High rates of acquired antibiotic resistances in staphylococci and other biofilm-forming bacteria further hamper treatment options and highlight the need for new anti-biofilm strategies. Here, we aimed to evaluate the potential of marine sponge-derived actinomycetes in inhibiting biofilm formation of several strains of S. epidermidis, S. aureus, and Pseudomonas aeruginosa. Results from in vitro biofilm-formation assays, as well as scanning electron and confocal microscopy, revealed that an organic extract derived from the marine sponge-associated bacterium Streptomyces sp. SBT343 significantly inhibited staphylococcal biofilm formation on polystyrene, glass and contact lens surfaces, without affecting bacterial growth. The extract also displayed similar antagonistic effects towards the biofilm formation of other S. epidermidis and S. aureus strains tested but had no inhibitory effects towards Pseudomonas biofilms. Interestingly the extract, at lower effective concentrations, did not exhibit cytotoxic effects on mouse fibroblast, macrophage and human corneal epithelial cell lines. Chemical analysis by High Resolution Fourier Transform Mass Spectrometry (HRMS) of the Streptomyces sp. SBT343 extract proportion revealed its chemical richness and complexity. Preliminary physico-chemical characterization of the extract highlighted the heat-stable and non-proteinaceous nature of the active component(s). The combined data suggest that the Streptomyces sp. SBT343 extract selectively inhibits staphylococcal biofilm formation without interfering with bacterial cell viability. Due to absence of cell toxicity, the extract might represent a good starting material to develop a future remedy to block staphylococcal biofilm formation on contact lenses and thereby to prevent intractable contact lens-mediated ocular infections.
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Affiliation(s)
| | - Eman M Othman
- Institute of Pharmacology and Toxicology, University of WürzburgWürzburg, Germany; Department of Analytical Chemistry, Faculty of Pharmacy, Minia UniversityMinia, Egypt
| | - Daniel Kampik
- Department of Ophthalmology, University Hospital Würzburg Würzburg, Germany
| | - Helga Stopper
- Institute of Pharmacology and Toxicology, University of Würzburg Würzburg, Germany
| | - Ute Hentschel
- GEOMAR Helmholtz Centre for Ocean Research, RD3 Marine Microbiology, and Christian-Albrechts University of Kiel Kiel, Germany
| | - Wilma Ziebuhr
- Institute for Molecular Infection Biology, University of Würzburg Würzburg, Germany
| | | | - Usama R Abdelmohsen
- Department of Botany II, Julius-von-Sachs Institute for Biological Sciences, University of WürzburgWürzburg, Germany; Department of Pharmacognosy, Faculty of Pharmacy, Minia UniversityMinia, Egypt
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19
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Dueñas-García IE, Heres-Pulido ME, Arellano-Llamas MR, De la Cruz-Núñez J, Cisneros-Carrillo V, Palacios-López CS, Acosta-Anaya L, Santos-Cruz LF, Castañeda-Partida L, Durán-Díaz A. Lycopene, resveratrol, vitamin C and FeSO 4 increase damage produced by pro-oxidant carcinogen 4-nitroquinoline-1-oxide in Drosophila melanogaster: Xenobiotic metabolism implications. Food Chem Toxicol 2017; 103:233-245. [PMID: 28202360 DOI: 10.1016/j.fct.2017.02.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 01/27/2017] [Accepted: 02/05/2017] [Indexed: 12/12/2022]
Abstract
4-nitroquinoline-1-oxide (4-NQO) is a pro-oxidant carcinogen bioactivated by xenobiotic metabolism (XM). We investigated if antioxidants lycopene [0.45, 0.9, 1.8 μM], resveratrol [11, 43, 172 μM], and vitamin C [5.6 mM] added or not with FeSO4 [0.06 mM], modulate the genotoxicity of 4-NQO [2 mM] with the Drosophila wing spot test standard (ST) and high bioactivation (HB) crosses, with inducible and high levels of cytochromes P450, respectively. The genotoxicity of 4-NQO was higher when dissolved in an ethanol - acetone mixture. The antioxidants did not protect against 4-NQO in any of both crosses. In the ST cross, resveratrol [11 μM], vitamin C and FeSO4 resulted in genotoxicity; the three antioxidants and FeSO4 increased the damage of 4-NQO. In the HB cross, none of the antioxidants, neither FeSO4, were genotoxic. Only resveratrol [172 μM] + 4-NQO increased the genotoxic activity in both crosses. We concluded that the effects of the antioxidants, FeSO4 and the modulation of 4-NQO were the result of the difference of Cyp450s levels, between the ST and HB crosses. We propose that the basal levels of the XM's enzymes in the ST cross interacted with a putative pro-oxidant activity of the compounds added to the pro-oxidant effects of 4-NQO.
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Affiliation(s)
- I E Dueñas-García
- Genetic Toxicology Laboratory, Universidad Nacional Autónoma de México (UNAM), Los Barrios N° 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - M E Heres-Pulido
- Genetic Toxicology Laboratory, Universidad Nacional Autónoma de México (UNAM), Los Barrios N° 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico.
| | - M R Arellano-Llamas
- Genetic Toxicology Laboratory, Universidad Nacional Autónoma de México (UNAM), Los Barrios N° 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - J De la Cruz-Núñez
- Genetic Toxicology Laboratory, Universidad Nacional Autónoma de México (UNAM), Los Barrios N° 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - V Cisneros-Carrillo
- Genetic Toxicology Laboratory, Universidad Nacional Autónoma de México (UNAM), Los Barrios N° 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - C S Palacios-López
- Genetic Toxicology Laboratory, Universidad Nacional Autónoma de México (UNAM), Los Barrios N° 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - L Acosta-Anaya
- Genetic Toxicology Laboratory, Universidad Nacional Autónoma de México (UNAM), Los Barrios N° 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - L F Santos-Cruz
- Genetic Toxicology Laboratory, Universidad Nacional Autónoma de México (UNAM), Los Barrios N° 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - L Castañeda-Partida
- Genetic Toxicology Laboratory, Universidad Nacional Autónoma de México (UNAM), Los Barrios N° 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
| | - A Durán-Díaz
- Mathematics, Biology, FES Iztacala, Universidad Nacional Autónoma de México (UNAM), Los Barrios N° 1, Los Reyes Iztacala, C.P. 54090, Tlalnepantla, Estado de México, Mexico
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20
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Othman EM, Naseem M, Awad E, Dandekar T, Stopper H. The Plant Hormone Cytokinin Confers Protection against Oxidative Stress in Mammalian Cells. PLoS One 2016; 11:e0168386. [PMID: 28005918 PMCID: PMC5179003 DOI: 10.1371/journal.pone.0168386] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 11/29/2016] [Indexed: 01/29/2023] Open
Abstract
Modulating key dynamics of plant growth and development, the effects of the plant hormone cytokinin on animal cells gained much attention recently. Most previous studies on cytokinin effects on mammalian cells have been conducted with elevated cytokinin concentration (in the μM range). However, to examine physiologically relevant dose effects of cytokinins on animal cells, we systematically analyzed the impact of kinetin in cultured cells at low and high concentrations (1nM-10μM) and examined cytotoxic and genotoxic conditions. We furthermore measured the intrinsic antioxidant activity of kinetin in a cell-free system using the Ferric Reducing Antioxidant Power assay and in cells using the dihydroethidium staining method. Monitoring viability, we looked at kinetin effects in mammalian cells such as HL60 cells, HaCaT human keratinocyte cells, NRK rat epithelial kidney cells and human peripheral lymphocytes. Kinetin manifests no antioxidant activity in the cell free system and high doses of kinetin (500 nM and higher) reduce cell viability and mediate DNA damage in vitro. In contrast, low doses (concentrations up to 100 nM) of kinetin confer protection in cells against oxidative stress. Moreover, our results show that pretreatment of the cells with kinetin significantly reduces 4-nitroquinoline 1-oxide mediated reactive oxygen species production. Also, pretreatment with kinetin retains cellular GSH levels when they are also treated with the GSH-depleting agent patulin. Our results explicitly show that low kinetin doses reduce apoptosis and protect cells from oxidative stress mediated cell death. Future studies on the interaction between cytokinins and human cellular pathway targets will be intriguing.
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Affiliation(s)
- Eman M Othman
- Institute of Pharmacology and Toxicology, University of Würzburg, Würzburg, Germany.,Department of Analytical Chemistry, Faculty of Pharmacy, University of El-Minia, Minia, Egypt
| | - Muhammed Naseem
- Department of Bioinformatics, Biocenter, University of Würzburg, Am Hubland, Würzburg, Germany.,Bogazici University, Department of Molecular Biology and Genetics, Kuzey Park, Istanbul
| | - Eman Awad
- Institute of Pharmacology and Toxicology, University of Würzburg, Würzburg, Germany
| | - Thomas Dandekar
- Department of Bioinformatics, Biocenter, University of Würzburg, Am Hubland, Würzburg, Germany
| | - Helga Stopper
- Institute of Pharmacology and Toxicology, University of Würzburg, Würzburg, Germany
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21
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Safety of synthetic trans‐resveratrol as a novel food pursuant to Regulation (EC) No 258/97. EFSA J 2016. [DOI: 10.2903/j.efsa.2016.4368] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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22
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Abraham SK, Khandelwal N, Hintzsche H, Stopper H. Antigenotoxic effects of resveratrol: assessment of in vitro and in vivo response. Mutagenesis 2015; 31:27-33. [PMID: 26152226 DOI: 10.1093/mutage/gev048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Experiments were performed to evaluate the in vitro and in vivo dose response for antigenotoxic effects of resveratrol (RES). For the in vitro study, HL-60 cells were co-treated with the test genotoxin and three concentrations of RES. Thereafter, genotoxic effects were assessed in the cytokinesis-block micronucleus test. Results of the in vitro experiments using genotoxins nitroquinoline-1-oxide (NQO) and mitomycin C (MMC) showed maximum inhibition of genotoxicity with the lowest test concentration of RES. The mouse bone marrow micronucleus assay was used for evaluating the in vivo antigenotoxic effects of RES against genotoxins diepoxybutane (DEB), MMC, methyl methanesulfonate and procarbazine (PCB). The experimental animals received RES pre-treatment by gavage 30min, 24 and 48h before injecting the genotoxin intraperitoneally. The in vivo studies demonstrated efficacy of the lowest test dose of RES for exerting maximum protection against chromosomal damage induced by all four genotoxins. The antigenotoxic effect observed with 6.25mg/kg RES was significantly higher than that of 100mg/kg RES against PCB and DEB. In conclusion, the findings from the present study indicate that lower test concentrations/doses of RES are more effective in exerting antigenotoxic effects.
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Affiliation(s)
| | | | - Henning Hintzsche
- Institut für Pharmakologie und Toxikologie, Universität Würzburg 97078, Würzburg, Germany
| | - Helga Stopper
- Institut für Pharmakologie und Toxikologie, Universität Würzburg 97078, Würzburg, Germany
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Chen FP, Chien MH. Phytoestrogens induce differential effects on both normal and malignant human breast cellsin vitro. Climacteric 2014; 17:682-91. [DOI: 10.3109/13697137.2014.937688] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Chen FP, Chien MH. Phytoestrogens induce apoptosis through a mitochondria/caspase pathway in human breast cancer cells. Climacteric 2013; 17:385-92. [PMID: 24299158 DOI: 10.3109/13697137.2013.869671] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVE To explore the effect and pathway of phytoestrogens on the growth of breast cancer cell line MCF-7. METHODS MCF-7 cells (human estrogen receptor-positive and progesterone receptor-positive breast cancer cells) were cultured in serum-free medium for 24 h and then treated with genistein, resveratrol, and quercetin (10(-10)-10(-4) mol/l). After further incubation for 24, 48, 72, and 92 h, the cells were harvested and extracted for 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. According to the above results, the proteins involving proliferative and apoptotic pathways were evaluated by Western blot analysis. RESULTS Genistein, resveratrol, and quercetin significantly inhibited cellular proliferation in a dose- and time-dependent manner. Significantly elevated caspase-3 activity was noted after treatment with genistein (10(-9)-10(-7) mol/l), as well as with resveratrol and quercetin (10(-9)-10(-5) mol/l). Significant reduction of PI3K and AKT protein and significant increase of Fas ligand, Fas-associated protein with death domain, cytochrome C, truncated Bid, caspase-9, and caspase-3 were all noted after genistein, resveratrol, and quercetin treatment. 17β-Estradiol induced completely opposite results. Estrogen receptor (ER) α expression was significantly increased with 17β-estradiol, whereas ERβ expression was significantly elevated in the cultures with genistein, resveratrol, and quercetin. CONCLUSIONS These data demonstrate that genistein, resveratrol, and quercetin have antiproliferative effects on breast cancer cells. Their induction of apoptosis involves the activation of both the intrinsic and extrinsic apoptotic pathways, which may be related to the differential affinity to ERα and ERβ. Whether phytoestrogens have similar effects on normal breast cells remains to be examined.
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Affiliation(s)
- F-P Chen
- Department of Obstetrics and Gynecology, Keelung Chang Gung Memorial Hospital, and Chang Gung University , Taiwan
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Resveratrol-loaded polymeric nanoparticles: validation of an HPLC-PDA method to determine the drug entrapment and evaluation of its antioxidant activity. ScientificWorldJournal 2013; 2013:506083. [PMID: 24282384 PMCID: PMC3824335 DOI: 10.1155/2013/506083] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 09/06/2013] [Indexed: 12/31/2022] Open
Abstract
Poly(lactic acid) (PLA) and PLA-poly(ethylene glycol) (PLA-PEG) nanoparticles containing resveratrol (RVT) were developed, and their antioxidant activity was evaluated. An analytical method using high performance liquid chromatography (HPLC)/photodiode array (PDA) detection was also developed and validated for RVT determination in nanoparticles. The mobile phase consisted of methanol : water (51 : 49, v/v) flowed at 0.9 mL/min, and the PDA detector was set at wavelength of 306 nm. The mean diameter of the nanoparticles varied between 180 and 220 nm, and the encapsulation efficiency of RVT ranged from 60% to 88%. The nanoparticles containing RVT were evaluated for their ability to scavenge the radical (2,2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt) (ABTS•+). The profile obtained from the PLA nanoparticles containing RVT demonstrated that after 24 h, there was almost no increase in antioxidant activity, which was lower than that of the free RVT and RVT-loaded PLA-PEG nanoparticles. For PLA-PEG nanoparticles, the radical-scavenging activity of RVT was shown to increase with time, and after 48 h, it was similar to that observed with free RVT.
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Abdelmohsen UR, Szesny M, Othman EM, Schirmeister T, Grond S, Stopper H, Hentschel U. Antioxidant and anti-protease activities of diazepinomicin from the sponge-associated Micromonospora strain RV115. Mar Drugs 2012; 10:2208-2221. [PMID: 23170078 PMCID: PMC3497017 DOI: 10.3390/md10102208] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 09/06/2012] [Accepted: 09/17/2012] [Indexed: 11/17/2022] Open
Abstract
Diazepinomicin is a dibenzodiazepine alkaloid with an unusual structure among the known microbial metabolites discovered so far. Diazepinomicin was isolated from the marine sponge-associated strain Micromonospora sp. RV115 and was identified by spectroscopic analysis and by comparison to literature data. In addition to its interesting preclinical broad-spectrum antitumor potential, we report here new antioxidant and anti-protease activities for this compound. Using the ferric reducing antioxidant power (FRAP) assay, a strong antioxidant potential of diazepinomicin was demonstrated. Moreover, diazepinomicin showed a significant antioxidant and protective capacity from genomic damage induced by the reactive oxygen species hydrogen peroxide in human kidney (HK-2) and human promyelocytic (HL-60) cell lines. Additionally, diazepinomicin inhibited the proteases rhodesain and cathepsin L at an IC50 of 70–90 µM. It also showed antiparasitic activity against trypomastigote forms of Trypanosoma brucei with an IC50 of 13.5 µM. These results showed unprecedented antioxidant and anti-protease activities of diazepinomicin, thus further highlighting its potential as a future drug candidate.
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Affiliation(s)
- Usama Ramadan Abdelmohsen
- Julius-von-Sachs-Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, Würzburg 97082, Germany;
- Author to whom correspondence should be addressed; ; Tel.: +49-931-318-0297; Fax: +49-931-888-6235
| | - Matthias Szesny
- Institute of Organic Chemistry, Eberhard-Karls-Universität, Auf der Morgenstelle 18, Tübingen 72076, Germany; (M.S.); (S.G.)
| | - Eman Maher Othman
- Department of Toxicology, University of Würzburg, Würzburg 97078, Germany; (E.M.O.); (H.S.)
| | - Tanja Schirmeister
- Institute of Pharmacy and Biochemistry, University of Mainz, Staudinger Weg 5, Mainz 55128, Germany;
| | - Stephanie Grond
- Institute of Organic Chemistry, Eberhard-Karls-Universität, Auf der Morgenstelle 18, Tübingen 72076, Germany; (M.S.); (S.G.)
| | - Helga Stopper
- Department of Toxicology, University of Würzburg, Würzburg 97078, Germany; (E.M.O.); (H.S.)
| | - Ute Hentschel
- Julius-von-Sachs-Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, Würzburg 97082, Germany;
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Sapsrithong T, Kaewprem W, Tongumpai S, Nusuetrong P, Meksuriyen D. Cissus quadrangularis ethanol extract upregulates superoxide dismutase, glutathione peroxidase and endothelial nitric oxide synthase expression in hydrogen peroxide-injured human ECV304 cells. JOURNAL OF ETHNOPHARMACOLOGY 2012; 143:664-672. [PMID: 22902249 DOI: 10.1016/j.jep.2012.07.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 05/11/2012] [Accepted: 07/22/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cissus quadrangularis has been widely used in traditional medicine for the treatment of hemorrhoid. However, the detailed mechanism of antioxidant defense of C. quadrangularis in endothelial cells under oxidative stress remains unclear. AIM OF THE STUDY The present study aims to elucidate the protective role of ethanol extract of C. quadrangularis (CQE) including its constituents, quercetin and resveratrol, on hydrogen peroxide (H(2)O(2))-injured human umbilical vein endothelial ECV304 cells. MATERIALS AND METHODS Viability, genotoxicity and protein expression of ECV304 cells were analyzed by MTT, alkaline comet and Western blot, respectively. Production of intracellular reactive oxygen species (ROS) was determined using dichlorofluorescein fluorescence dye. RESULTS After exposing cells to CQE containing quercetin and resveratrol, DNA damage was not observed. CQE including quercetin and resveratrol significantly attenuated ROS in H(2)O(2)-injured ECV304 cells in a concentration-dependent manner. The protein expression of superoxide dismutase (Cu/Zn-SOD, Mn-SOD), glutathione peroxidase (GPx) and endothelial nitric oxide synthase (eNOS) increased in the cells treated with CQE, quercetin or resveratrol prior to H(2)O(2) exposure, as compared with control. CONCLUSIONS The results provide a molecular mechanism of C. quadrangularis, which could be partially related to quercetin and resveratrol, in restoring ROS in endothelial cells through the upregulation of Cu/Zn-SOD, Mn-SOD, GPx and eNOS.
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Affiliation(s)
- Tarat Sapsrithong
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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Gencel VB, Benjamin MM, Bahou SN, Khalil RA. Vascular effects of phytoestrogens and alternative menopausal hormone therapy in cardiovascular disease. Mini Rev Med Chem 2012; 12:149-74. [PMID: 22070687 DOI: 10.2174/138955712798995020] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 07/27/2011] [Accepted: 08/05/2011] [Indexed: 01/10/2023]
Abstract
Phytoestrogens are estrogenic compounds of plant origin classified into different groups including isoflavones, lignans, coumestans and stilbenes. Isoflavones such as genistein and daidzein are the most studied and most potent phytoestrogens, and are found mainly in soy based foods. The effects of phytoestrogens are partly mediated via estrogen receptors (ERs): ERα, ERβ and possibly GPER. The interaction of phytoestrogens with ERs is thought to induce both genomic and non-genomic effects in many tissues including the vasculature. Some phytoestrogens such as genistein have additional non-ER-mediated effects involving signaling pathways such as tyrosine kinase. Experimental studies have shown beneficial effects of phytoestrogens on endothelial cells, vascular smooth muscle, and extracellular matrix. Phytoestrogens may also affect other pathophysiologic vascular processes such as lipid profile, angiogenesis, inflammation, tissue damage by reactive oxygen species, and these effects could delay the progression of atherosclerosis. As recent clinical trials showed no vascular benefits or even increased risk of cardiovascular disease (CVD) and CV events with conventional menopausal hormone therapy (MHT), phytoestrogens are being considered as alternatives to pharmacologic MHT. Epidemiological studies in the Far East population suggest that dietary intake of phytoestrogens may contribute to the decreased incidence of postmenopausal CVD and thromboembolic events. Also, the WHO-CARDIAC study supported that consumption of high soybean diet is associated with lower mortalities from coronary artery disease. However, as with estrogen, there has been some discrepancy between the experimental studies demonstrating the vascular benefits of phytoestrogens and the data from clinical trials. This is likely because the phytoestrogens clinical trials have been limited in many aspects including the number of participants enrolled, the clinical end points investigated, and the lack of long-term follow-up. Further investigation of the cellular mechanisms underlying the vascular effects of phytoestrogens and careful evaluation of the epidemiological evidence and clinical trials of their potential vascular benefits would put forward the use of phytoestrogens as an alternative MHT for the relief of menopausal symptoms and amelioration of postmenopausal CVD.
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Affiliation(s)
- V B Gencel
- Vascular Surgery Research Laboratory, Division of Vascular and Endovascular Surgery, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA 02115, USA
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Analysis of in vitro chemoprevention of genotoxic damage by phytochemicals, as single agents or as combinations. Mutat Res 2012; 744:117-24. [PMID: 22405976 DOI: 10.1016/j.mrgentox.2012.01.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 11/15/2011] [Accepted: 01/06/2012] [Indexed: 12/26/2022]
Abstract
Cancer chemoprevention with low-dose combinations of bioactive phytochemicals instead of single agents has been suggested to induce less toxicity and improve efficacy. In this study, we selected four plant food-based phytochemicals, viz. chlorogenic acid (CLA), pelargonidin (PEL), resveratrol (RES) and epigallocatechin gallate (EGCG) to evaluate the in vitro chemoprevention of genotoxic damage in HL-60 cells. These agents were tested either individually or as a combination at two concentrations (with a 10-fold difference) against the genotoxins mitomycin C (MMC), diepoxybutane (DEB) and patulin (PAT). Our preliminary ferric reducing antioxidant power (FRAP) assay demonstrated additive effects when PEL, CLA, RES and EGCG were combined. Results of the cytokinesis-block micronucleus test showed significant protection against genotoxic damage induced by PAT, DEB and MMC when CLA, PEL, RES and EGCG were tested individually. This protective effect of the phytochemicals was not concentration-related. Both low- and high-concentration combinations of CLA, PEL, RES and EGCG showed significant reducing effects on the frequencies of micronuclei induced by PAT, DEB and MMC. However, the micronucleus test did not provide indications of additive or synergistic effects with this combination of phytochemicals. In conclusion, the chemo-preventive effects of PEL, CLA, RES and EGCG against genotoxic damage induced by MMC, DEB and PAT are indicative of a 'saturation effect' when higher concentrations and combinations of these phytochemicals are used.
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Piotrowska H, Kucinska M, Murias M. Biological activity of piceatannol: Leaving the shadow of resveratrol. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2012; 750:60-82. [DOI: 10.1016/j.mrrev.2011.11.001] [Citation(s) in RCA: 275] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 10/26/2011] [Accepted: 11/03/2011] [Indexed: 01/27/2023]
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Calabrese V, Cornelius C, Dinkova-Kostova AT, Iavicoli I, Di Paola R, Koverech A, Cuzzocrea S, Rizzarelli E, Calabrese EJ. Cellular stress responses, hormetic phytochemicals and vitagenes in aging and longevity. Biochim Biophys Acta Mol Basis Dis 2011; 1822:753-83. [PMID: 22108204 DOI: 10.1016/j.bbadis.2011.11.002] [Citation(s) in RCA: 280] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 10/31/2011] [Accepted: 11/01/2011] [Indexed: 12/30/2022]
Abstract
Modulation of endogenous cellular defense mechanisms represents an innovative approach to therapeutic intervention in diseases causing chronic tissue damage, such as in neurodegeneration. This paper introduces the emerging role of exogenous molecules in hormetic-based neuroprotection and the mitochondrial redox signaling concept of hormesis and its applications to the field of neuroprotection and longevity. Maintenance of optimal long-term health conditions is accomplished by a complex network of longevity assurance processes that are controlled by vitagenes, a group of genes involved in preserving cellular homeostasis during stressful conditions. Vitagenes encode for heat shock proteins (Hsp) Hsp32, Hsp70, the thioredoxin and the sirtuin protein systems. Dietary antioxidants, such as polyphenols and L-carnitine/acetyl-L-carnitine, have recently been demonstrated to be neuroprotective through the activation of hormetic pathways, including vitagenes. Hormesis provides the central underpinning of neuroprotective responses, providing a framework for explaining the common quantitative features of their dose response relationships, their mechanistic foundations, their relationship to the concept of biological plasticity as well as providing a key insight for improving the accuracy of the therapeutic dose of pharmaceutical agents within the highly heterogeneous human population. This paper describes in mechanistic detail how hormetic dose responses are mediated for endogenous cellular defense pathways including sirtuin, Nrfs and related pathways that integrate adaptive stress responses in the prevention of neurodegenerative diseases. This article is part of a Special Issue entitled: Antioxidants and Antioxidant Treatment in Disease.
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Calabrese EJ, Mattson MP, Calabrese V. Resveratrol commonly displays hormesis: occurrence and biomedical significance. Hum Exp Toxicol 2011; 29:980-1015. [PMID: 21115559 DOI: 10.1177/0960327110383625] [Citation(s) in RCA: 176] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Resveratrol induces hormetic dose responses in a wide range of biological models, affecting numerous endpoints of biomedical and therapeutic significance. These responses were reported for numerous human tumor cell lines affecting breast, prostate, colon, lung, uterine and leukemia. In such cases, low concentrations of resveratrol enhanced tumor cell proliferation whereas higher concentrations were inhibitory. Similar resveratrol-induced biphasic dose responses were seen with several parasitic diseases, including Leishmaniasis and trichinella. Hormetic effects were also reported in animal models for cardiovascular induced injury, gastric lesions, ischemic stroke, Alzheimer's disease and osteoporosis. In these cases, there was often a protective effect at low doses but an adverse effect at higher doses, exacerbating the disease process/incidence. This analysis indicates that many effects induced by resveratrol are dependent on dose and that opposite effects occur at low and high doses, being indicative of a hormetic dose response. Despite consistent occurrence of hormetic dose responses of resveratrol in a wide range of biomedical models, epidemiologic and clinical trials are needed to assess the nature of its dose-response in humans.
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Affiliation(s)
- Edward J Calabrese
- Department of Public Health, Environmental Health Sciences, University of Massachusetts, Amherst, MA 01003,USA.
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Effects of various agents on DNA fragmentation and telomerase enzyme activities in adenocarcinoma cell lines. Mol Biol Rep 2010; 38:2463-9. [DOI: 10.1007/s11033-010-0382-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Accepted: 11/08/2010] [Indexed: 10/18/2022]
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Sahin K, Akdemir F, Orhan C, Tuzcu M, Hayirli A, Sahin N. Effects of dietary resveratrol supplementation on egg production and antioxidant status. Poult Sci 2010; 89:1190-8. [PMID: 20460666 DOI: 10.3382/ps.2010-00635] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Resveratrol, a polyphenol derived from red grapes, berries, and peanuts, exerts antiinflammatory, antioxidant, and immunomodulatory effects. The objective of this study was to investigate the effects of dietary resveratrol supplementation on performance and serum and egg yolk antioxidant status in quail (Coturnix coturnix japonica). A total of 150 five-week-old quails were allocated randomly to 1 of 3 dietary treatments: basal diet and basal diet supplemented with 200 or 400 mg of resveratrol/kg of diet. Each diet was offered to 10 cages of 5 birds in each from 4 to 16 wk of age. Serum and egg samples were collected at the beginning and end the experimental period to be evaluated for malondialdehyde (MDA), vitamin A, and vitamin E. Data were subjected to analysis of covariance using the MIXED procedure. There was no treatment effect on feed intake, egg production, or egg quality parameters related to shell, yolk, and albumen. There were no effects of resveratrol supplementation on serum and egg yolk vitamin A concentrations. The quails supplemented with resveratrol had a lower serum MDA concentration (0.56 vs. 0.88 mg/L, P<0.03) and a higher serum vitamin E concentration (5.72 vs. 3.56 mg/L, P<0.008) than those not supplemented with resveratrol. Moreover, there was a linear decrease in serum MDA concentration (P<0.02) and a linear increase in serum vitamin E concentration (P<0.01) as supplemental resveratrol level increased. The treatment groups had less egg yolk MDA concentration than the control group (0.21 vs. 0.15 microg/g, P<0.002). Egg yolk MDA concentration decreased linearly in response to increasing dietary resveratrol level (P<0.0003). In conclusion, inclusion of resveratrol up to 400 mg/kg into quail diets enhanced antioxidant status of birds and eggs. Further studies should investigate the carryover effects of dietary resveratrol supplementation on product quality with respect to shelf life, antioxidant stability, and its nutritive value for human consumption.
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Affiliation(s)
- K Sahin
- Department of Animal Nutrition & Nutritional Disorders, Faculty of Veterinary Medicine, Firat University, Elazig 23119, Turkey.
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Rusin M, Zajkowicz A, Butkiewicz D. Resveratrol induces senescence-like growth inhibition of U-2 OS cells associated with the instability of telomeric DNA and upregulation of BRCA1. Mech Ageing Dev 2009; 130:528-37. [PMID: 19559722 DOI: 10.1016/j.mad.2009.06.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2008] [Revised: 06/14/2009] [Accepted: 06/18/2009] [Indexed: 11/25/2022]
Abstract
Resveratrol decreases cancer risk and improves health of laboratory animals. However, it can also promote genomic instability. Part of the beneficial activity of resveratrol may result from the activation of SIRT1 deacetylase. We examined how resveratrol influenced the growth of human cancer cell lines of different origin: osteosarcoma (U-2 OS) and lung adenocarcinoma (A549) and how it modulated the expression as well as the localization of key proteins, involved in DNA repair and cell cycle regulation. Resveratrol-induced growth arrest was associated with signs of stress-induced senescence. Differential expression of BRCA1, cyclin B1, pRb and p21 in U-2 OS and A549 cells indicates that resveratrol can engage various molecular mechanisms to arrest cell cycle progression. In subset of U-2 OS cells, the upregulated BRCA1 formed foci closely associated with WRN and the telomeric protein (TRF1). Moreover, resveratrol induced telomeric instability in U-2 OS cells and the activation of DNA damage signaling in both cell lines, manifested as the phosphorylation of histone H2AX at serine 139 and of p53 at serines 15 and 37. Our data are consistent with the hypothesis that resveratrol inhibits cell growth and induces senescence by altering DNA metabolism.
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Affiliation(s)
- Marek Rusin
- Department of Tumor Biology, Maria Skłodowska - Curie Memorial Cancer Center and Institute of Oncology, Gliwice Branch, Gliwice, Poland.
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Williams LD, Burdock GA, Edwards JA, Beck M, Bausch J. Safety studies conducted on high-purity trans-resveratrol in experimental animals. Food Chem Toxicol 2009; 47:2170-82. [PMID: 19505523 DOI: 10.1016/j.fct.2009.06.002] [Citation(s) in RCA: 154] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Revised: 05/21/2009] [Accepted: 06/02/2009] [Indexed: 12/26/2022]
Abstract
trans-Resveratrol is a naturally occurring polyphenolic compound found in a variety of foods, but predominantly in grapes. Safety studies were conducted on high-purity trans-resveratrol (Resvida), including skin and eye irritation, dermal sensitization, subchronic and reproductive toxicity, genotoxicity, and absorption, metabolism and excretion. Resvida was non-irritating to skin and eyes and non-sensitizing. It was non-mutagenic in a bacterial reverse mutation assay in Salmonella typhimurium and Escherichia coli, but exhibited clastogenic activity in a chromosomal aberration test in human lymphocytes. However, in an in vivo bone marrow micronucleus test in rats, Resvida was non-genotoxic. In a 28-day study, Resvida caused no adverse effects in rats at 50, 150 and 500 mg/kg bw/day. Similarly, in a 90-day study, Resvida did not cause any adverse effects in rats at up to 700 mg/kg bw/day; the highest dose tested. Resvida did not induce any adverse reproductive effects in an embryo-fetal toxicity study in rats at a dose of 750 mg/kg bw/day. Also, in vitro and in vivo absorption, metabolism, and excretion studies in Caco-2 cells, rat primary hepatocytes and male and female rats (in vivo) show that Resvida is readily absorbed, metabolized and excreted. These studies provide evidence that Resvida is well tolerated and non-toxic.
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Alteration of xenobiotic metabolizing enzymes by resveratrol in liver and lung of CD1 mice. Food Chem Toxicol 2008; 47:454-61. [PMID: 19101601 DOI: 10.1016/j.fct.2008.11.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Revised: 11/10/2008] [Accepted: 11/26/2008] [Indexed: 02/06/2023]
Abstract
Conflicting data on the anticancer properties of the polyphenolic natural product resveratrol (RSV) have been reported. Since the inhibition of "bioactivating" Phase-I xenobiotic metabolizing enzymes (XMEs) and/or induction of "detoxifying" Phase-II XMEs have long been considered important cancer chemopreventive strategies, in the current study we investigated the effect of RSV treatment on several Cytochrome P450 (CYP)-dependent oxidations and Phase-II markers in liver and lung subcellular preparations from CD1 male mice. These mice were i.p treated with RSV (25 or 50mg/Kg b.w.) daily for one or for seven consecutive days. Using either specific probes for different CYPs, or the regio- and stereo-selective metabolism of testosterone, we found that most of the Phase-I XMEs were significantly suppressed (up to approximately 61% loss for the CYP3A1/2-linked 6 beta-hydroxylation of testosterone in liver and up to approximately 97% loss for 2 alpha-hydroxylase in lung) following RSV treatment for 7 days at 50mg/kg b.w. Glutathione S-transferase was significantly inhibited, particularly in lung (approximately 76% loss of activity) after single administration of 25mg/kg b.w. A different response for the UDP-glucuronosyl transferase was observed, where a significant induction was seen (approximately 83%) in the liver and a significant reduction was observed in the lung (up to approximately 83% loss) following treatment with 25mg/kg b.w. for seven days. These data indicate that murine XMEs are altered by RSV, and that this alteration is dependent on the RSV dose, duration and way of administration. These results could provide mechanistic explanations for the conflicting chemopreventive results reported for RSV.
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Radkar V, Lau-Cam C, Hardej D, Billack B. The role of surface receptor stimulation on the cytotoxicity of resveratrol to macrophages. Food Chem Toxicol 2008; 46:3664-70. [DOI: 10.1016/j.fct.2008.09.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2008] [Revised: 08/28/2008] [Accepted: 09/17/2008] [Indexed: 12/15/2022]
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In vitro evaluation of the cytotoxic and anti-proliferative properties of resveratrol and several of its analogs. Cell Mol Biol Lett 2008; 13:553-69. [PMID: 18516504 PMCID: PMC6275965 DOI: 10.2478/s11658-008-0022-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Accepted: 05/06/2008] [Indexed: 11/20/2022] Open
Abstract
Resveratrol (RES), a component of red wine, possesses anti-inflammatory properties. The studies described in the present work were aimed at evaluating the potential for RES and related stilbene analogs (piceatannol, PIC; pterostilbene, TPS; trans-stilbene, TS; and trans-stilbene oxide, TSO) to exhibit toxicity towards RAW 264.7 mouse macrophages. The effect of TS, TSO, RES and TPS on RAW 264.7 macrophage viability was determined by two standard methods: (a) the MTT assay and (b) the trypan blue dye exclusion test. Whereas macrophages were more sensitive to PIC (LC50 trypan ∼ 1.3 μM) and to TPS (LC50 trypan ∼ 4.0 μM and LC50 MTT ∼ 8.3 μM) than to RES (LC50 trypan ∼ 8.9 μM and LC50 MTT ∼ 29.0 μM), they were relatively resistant to TSO (LC50 trypan ∼ 61.0 μM and LC50 MTT > 100 μM) and to TS (LC50 trypan ≥ 5.0 μM and LC50 MTT ≥ 5.0 μM). The ability of selected stilbenes (RES, TPS and PIC) to exhibit growth inhibitory effects was also examined. Although RES and TPS were observed to inhibit cell proliferation in macrophages (IC50 ≤ 25 μM), these cells were resistant to growth inhibition by PIC (IC50 ≥ 50 μM). The data obtained in the present analysis demonstrate that substituted stilbene compounds such as RES have the capacity to exhibit cytotoxic and anti-proliferative activities in macrophages.
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Mense SM, Hei TK, Ganju RK, Bhat HK. Phytoestrogens and breast cancer prevention: possible mechanisms of action. ENVIRONMENTAL HEALTH PERSPECTIVES 2008; 116:426-33. [PMID: 18414622 PMCID: PMC2291001 DOI: 10.1289/ehp.10538] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2007] [Accepted: 01/15/2008] [Indexed: 05/24/2023]
Abstract
OBJECTIVE Phytoestrogens display an array of pharmacologic properties, and in recent years investigation of their potential as anticancer agents has increased dramatically. In this article we review the published literature related to phytoestrogens and breast cancer as well as suggest the possible mechanisms that may underlie the relationship between phytoestrogens and breast cancer. DATA SOURCES Electronic searches on phytoestrogens and breast cancer were performed on MEDLINE and EMBASE in June 2007. No date restriction was placed on the electronic search. DATA EXTRACTION We focused on experimental data from published studies that examined the characteristics of phytoestrogens using in vivo or in vitro models. We also include human intervention studies in this review. DATA SYNTHESIS We evaluated evidence regarding the possible mechanisms of phytoestrogen action. Discussions of these mechanisms were organized into those activities related to the estrogen receptor, cell growth and proliferation, tumor development, signaling pathways, and estrogen-metabolizing enzymes. CONCLUSIONS We suggest that despite numerous investigations, the mechanisms of phytoestrogen action in breast cancer have yet to be elucidated. It remains uncertain whether these plant compounds are chemoprotective or whether they may produce adverse outcomes related to breast carcinogenesis.
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Affiliation(s)
- Sarah M. Mense
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York, USA
| | - Tom K. Hei
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York, USA
| | - Ramesh K. Ganju
- Division of Experimental Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Hari K. Bhat
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York, USA
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Murias M, Luczak MW, Niepsuj A, Krajka-Kuzniak V, Zielinska-Przyjemska M, Jagodzinski PP, Jäger W, Szekeres T, Jodynis-Liebert J. Cytotoxic activity of 3,3',4,4',5,5'-hexahydroxystilbene against breast cancer cells is mediated by induction of p53 and downregulation of mitochondrial superoxide dismutase. Toxicol In Vitro 2008; 22:1361-70. [PMID: 18434081 DOI: 10.1016/j.tiv.2008.03.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2007] [Revised: 02/27/2008] [Accepted: 03/09/2008] [Indexed: 01/14/2023]
Abstract
The phytochemical resveratrol, which is found in grapes and red wine, has been reported to have a variety of biological properties. It was shown in our previous research that introduction of additional hydroxyl groups into the stilbene structure increases the biological activity of resveratrol. In this study, the activity of 3,3',4,4',5,5'-hexahydroxystilbene (M8) was investigated in ZR-75-1, MDA-MB-231 and T47D human breast cancer cells. For evaluation of cytotoxic activity of M8, clonogenic and cell proliferation assays were used. The IC50 values obtained in the clonogenic assay were 0.846 microM for T47D, 8.53 microM for ZR-75-1 cells and 25.5 microM for MDA-MB-231, while IC50 values obtained in the cell proliferation assay were significantly higher: 90.1 microM, 98.4 microM, 127.8 microM for T47D, ZR-75-1 and MDA-MB-231 cells, respectively. Compound M8 caused the activation of caspase-8 in MDA-MB-231 cells (marker of extrinsic apoptotic pathway), while activities of caspase-9 (marker of intrinsic apoptotic pathway) and caspase-3 were increased in all 3 tested cell lines. Activation of caspase-9 and caspase-3 was connected with loss of mitochondrial potential and increase of p53, which could have an impact on downregulation of mitochondrial superoxide dismutase (MnSOD) seen in our experiments. MnSOD is a key enzyme providing antioxidative defense in mitochondria - the cellular center of reactive oxygen species' generation. Downregulation of MnSOD can therefore cause a significant decrease of antioxidant defense in cancer cells. An increase of oxidative stress conditions was suggested by loss of reduced glutathione in tested cells. Since cancer cells are usually under permanent oxidative stress, additional increased ROS generation as a result of the interaction of M8 with the mitochondrial respiratory chain and a decrease in oxidative defense can therefore be a promising method for selective elimination of cancer cells.
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Affiliation(s)
- Marek Murias
- Department of Toxicology, Poznan University of Medical Sciences, ul Dojazd 30, 60-631 Poznan, Poland.
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Kabil A, Silva E, Kortenkamp A. Estrogens and genomic instability in human breast cancer cells--involvement of Src/Raf/Erk signaling in micronucleus formation by estrogenic chemicals. Carcinogenesis 2008; 29:1862-8. [DOI: 10.1093/carcin/bgn138] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Abraham SK, Schupp N, Schmid U, Stopper H. Antigenotoxic effects of the phytoestrogen pelargonidin chloride and the polyphenol chlorogenic acid. Mol Nutr Food Res 2007; 51:880-7. [PMID: 17579891 DOI: 10.1002/mnfr.200600214] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Pelargonidin (PEL), a common anthocyanidin with estrogenic activity, was tested in HL-60 cells for its genotoxicity and possible antigenotoxic effects against 4-nitroquinoline 1-oxide (NQO), a potent mutagen and carcinogen which induces oxidative stress. To take into account potential interactions between phytochemicals within normal human nutrition, we evaluated a combination of PEL with the nonestrogenic phytochemical chlorogenic acid (CLA), one of the most abundant polyphenols in the human diet. PEL (< or = 2 microM) and CLA (< or = 800 microM) were nongenotoxic in the micronucleus test. We observed significant antigenotoxic effects against NQO with both compounds, but no additive interaction of PEL and CLA. Comet assay results showed a nonsignificant reduction in NQO-induced DNA damage with both compounds and their combination. Flow cytometric analysis of oxidative stress revealed significant protection against NQO-induced oxidative stress by PEL, CLA, and their combination. Furthermore, PEL and CLA prevented the NQO-induced reduction in GSH level. This could be a mechanism for the observed reduction in genotoxicity. In conclusion, the phytoestrogen PEL revealed antioxidative and antigenotoxic properties in HL-60 cells, but no significant additive interaction with the abundant nutritional polyphenol CLA under the tested conditions.
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Affiliation(s)
- Suresh K Abraham
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
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45
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Saiko P, Szakmary A, Jaeger W, Szekeres T. Resveratrol and its analogs: defense against cancer, coronary disease and neurodegenerative maladies or just a fad? Mutat Res 2007; 658:68-94. [PMID: 17890139 DOI: 10.1016/j.mrrev.2007.08.004] [Citation(s) in RCA: 319] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2006] [Revised: 08/09/2007] [Accepted: 08/13/2007] [Indexed: 01/30/2023]
Abstract
Resveratrol (3,5,4'-trihydroxy-trans-stilbene; RV), a dietary constituent found in grapes and wine, exerts a wide variety of pharmacological activities. Because the grape skins are not fermented in the production process of white wines, only red wines contain considerable amounts of this compound. RV is metabolized into sulfated and glucuronidated forms within approximately 15min of entering the bloodstream, and moderate consumption of red wine results in serum levels of RV that barely reach the micromolar concentrations. In contrast, its metabolites, which may be the active principle, circulate in serum for up to 9h. RV has been identified as an effective candidate for cancer chemoprevention due its ability to block each step in the carcinogenesis process by inhibiting several molecular targets such as kinases, cyclooxygenases, ribonucleotide reductase, and DNA polymerases. In addition, RV protects the cardiovascular system by a large number of mechanisms, including defense against ischemic-reperfusion injury, promotion of vasorelaxation, protection and maintenance of intact endothelium, anti-atherosclerotic properties, inhibition of low-density lipoprotein oxidation, and suppression of platelet aggregation, thereby strongly supporting its role in the prevention of coronary disease. Promising data within the use of RV have also been obtained regarding progressive neurodegenerative maladies such as Alzheimer's, Huntington's, and Parkinson's diseases. Because neurotoxicity is often related to mitochondrial dysfunction and may be ameliorated through the inclusion of metabolic modifiers and/or antioxidants, RV may provide an alternative (and early) intervention approach that could prevent further damage. RV induces a multitude of effects that depend on the cell type (e.g., NF-kappaB modulation in cancer cells vs. neural cells), cellular condition (normal, stressed, or malignant), and concentration (proliferative vs. growth arrest), and it can have opposing activities. RV affects whole pathways and sets of intracellular events rather than a single enzyme and, therefore, may be an effective therapy to restore homoestasis. Nonetheless, the question of whether RV or its metabolites can accumulate to bioactive levels in target organs remains to be addressed.
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Affiliation(s)
- Philipp Saiko
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, General Hospital of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria.
| | - Akos Szakmary
- Department of Medicine I, Division of Cancer Research, Medical University of Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
| | - Walter Jaeger
- Department of Clinical Pharmacy and Diagnostics, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria
| | - Thomas Szekeres
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, General Hospital of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria
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Chang ET, Canchola AJ, Lee VS, Clarke CA, Purdie DM, Reynolds P, Bernstein L, Stram DO, Anton-Culver H, Deapen D, Mohrenweiser H, Peel D, Pinder R, Ross RK, West DW, Wright W, Ziogas A, Horn-Ross PL. Wine and other alcohol consumption and risk of ovarian cancer in the California Teachers Study cohort. Cancer Causes Control 2007; 18:91-103. [PMID: 17186425 PMCID: PMC1764867 DOI: 10.1007/s10552-006-0083-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2006] [Revised: 09/29/2006] [Indexed: 11/28/2022]
Abstract
Objective Whether alcohol consumption influences ovarian cancer risk is unclear. Therefore, we investigated the association between alcohol intake at various ages and risk of ovarian cancer. Methods Among 90,371 eligible members of the California Teachers Study cohort who completed a baseline alcohol assessment in 1995–1996, 253 women were diagnosed with epithelial ovarian cancer by the end of 2003. Multivariate Cox proportional hazards regression analysis was performed to estimate relative risks (RRs) and 95% confidence intervals (CIs). Results Consumption of total alcohol, beer, or liquor in the year prior to baseline, at ages 30–35 years, or at ages 18–22 years was not associated with risk of ovarian cancer. Consumption of at least one glass per day of wine, compared to no wine, in the year before baseline was associated with increased risk of developing ovarian cancer: RR = 1.57 (95% CI 1.11–2.22), Ptrend = 0.01. The association with wine intake at baseline was particularly strong among peri-/post-menopausal women who used estrogen-only hormone therapy and women of high socioeconomic status. Conclusions Alcohol intake does not appear to affect ovarian cancer risk. Constituents of wine other than alcohol or, more likely, unmeasured determinants of wine drinking were associated with increased risk of ovarian cancer.
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Affiliation(s)
- Ellen T Chang
- Northern California Cancer Center, 2201 Walnut Avenue, Suite 300, Fremont, CA 94538, USA.
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Cruz MN, Agewall S, Schenck-Gustafsson K, Kublickiene K. Acute dilatation to phytoestrogens and estrogen receptor subtypes expression in small arteries from women with coronary heart disease. Atherosclerosis 2007; 196:49-58. [PMID: 17367797 DOI: 10.1016/j.atherosclerosis.2007.01.038] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2006] [Revised: 01/23/2007] [Accepted: 01/29/2007] [Indexed: 11/16/2022]
Abstract
We tested if endothelial function and estrogen receptor (ER) expression differs between resistance arteries in subcutaneous circulation from postmenopausal women with coronary heart disease (CHD, congruent with 1 year after myocardial infarction, n=12) and aged matched controls (n=14); and if acute effects of phytoestrogens (genistein, resveratrol) could be of relevance for vascular protection. We utilized ex vivo small artery ( congruent with 350 microm) bioassays and found no difference in bradykinin (BK)-mediated dilatation between the groups. One-hour incubation with phytoestrogens (natural ER beta agonists), propyl-pyrazole-triol-trisphenol (PPT-selective ER alpha agonist) and 17beta-estradiol (17beta-E(2)-ER alpha/beta agonist) at 0.01 microM/L had no effect on BK-induced responses. Concentration-response curves (0.01-30 microM/L) to investigated compounds were also obtained and compared in separate arteries. We found that dilatation to phytoestrogens was enhanced in CHD if compared to controls (p<0.05), while responses to 17beta-E(2) remained similar. The dilatation to phytoestrogens was also higher if compared to 17beta-E(2) (p<0.05) in CHD. In controls, only responses to PPT, but not to phytoestrogens, were enhanced in comparison to 17beta-E(2) (p<0.05). Inhibition of NO synthase had no effect on dilatation induced by increasing concentrations of investigated compounds. ER beta expression was enhanced in the vascular wall from CHD women, while ER alpha predominated in the controls (p<0.05). We suggest that diet supplementation by phytoestrogens may provide cardiovascular benefit for postmenopausal women with CHD. The selective targeting of one of the ER subtype may have implications for women's cardiovascular health.
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Affiliation(s)
- Maria Natalia Cruz
- Karolinska Institutet, Institution for Clinical Science Intervention and Technology (CLINTEC), Division of Obstetrics and Gynecology, Karolinska University Hospital, Huddinge Campus, 14186 Stockholm, Sweden
| | - Stefan Agewall
- Karolinska Institutet, Department of Cardiology, Karolinska University Hospital, Huddinge Campus, 14186 Stockholm, Sweden
| | - Karin Schenck-Gustafsson
- Karolinska Institutet, Department of Cardiology, Karolinska University Hospital, Solna, Huddinge Campus, 14186 Stockholm, Sweden
| | - Karolina Kublickiene
- Karolinska Institutet, Institution for Clinical Science Intervention and Technology (CLINTEC), Division of Obstetrics and Gynecology, Karolinska University Hospital, Huddinge Campus, 14186 Stockholm, Sweden.
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Horn TL, Cwik MJ, Morrissey RL, Kapetanovic I, Crowell JA, Booth TD, McCormick DL. Oncogenicity evaluation of resveratrol in p53(+/-) (p53 knockout) mice. Food Chem Toxicol 2006; 45:55-63. [PMID: 16965847 PMCID: PMC1855246 DOI: 10.1016/j.fct.2006.07.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2006] [Revised: 06/22/2006] [Accepted: 07/16/2006] [Indexed: 02/05/2023]
Abstract
A six-month study was conducted in p53(+/-) mice to evaluate the possible oncogenicity of resveratrol (3,5,4'-trihydroxy-trans-stilbene), a cancer chemopreventive agent present in grapes and other foods. p53(+/-) mice (25/sex/group) received daily gavage exposure to vehicle only (negative control), resveratrol doses of 1000, 2000, or 4000 mg/kg/day, or p-cresidine (400 mg/kg/day; positive control). No mortality was seen in mice receiving the low dose of resveratrol. However, the mid and high doses induced mortality associated with impaction of the test article in the gastrointestinal tract. Resveratrol had no effect on body weight, food consumption, or clinical signs in surviving mice in any dose group, but induced dose-related increases in liver weight and serum cholesterol in both sexes. Mild anemia was seen in male mice at the high dose only; hematologic effects were not seen in females. Histopathology identified the kidney (hydronephrosis) and urinary bladder (epithelial hyperplasia) as target tissues for resveratrol toxicity. The incidences of both benign and malignant tumors in mice exposed to resveratrol were comparable to those in vehicle controls. By contrast, the positive control article, p-cresidine, induced urinary bladder cancer in both sexes. When administered to p53(+/-) mice at its maximum tolerated dose, resveratrol demonstrates no evidence of oncogenicity.
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Affiliation(s)
- T L Horn
- Life Sciences Group, IIT Research Institute, 10 West 35th Street, Chicago, IL 60616, USA
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Kim SH, Henry EC, Kim DK, Kim YH, Shin KJ, Han MS, Lee TG, Kang JK, Gasiewicz TA, Ryu SH, Suh PG. Novel compound 2-methyl-2H-pyrazole-3-carboxylic acid (2-methyl-4-o-tolylazo-phenyl)-amide (CH-223191) prevents 2,3,7,8-TCDD-induced toxicity by antagonizing the aryl hydrocarbon receptor. Mol Pharmacol 2006; 69:1871-8. [PMID: 16540597 DOI: 10.1124/mol.105.021832] [Citation(s) in RCA: 210] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a widespread environmental pollutant with many toxic effects, including endocrine disruption, reproductive dysfunction, immunotoxicity, liver damage, and cancer. These are mediated by TCDD binding to and activating the aryl hydrocarbon receptor (AhR), a basic helix-loop-helix transcription factor. In this regard, targeting the AhR using novel small molecule inhibitors is an attractive strategy for the development of potential preventive agents. In this study, by screening a chemical library composed of approximately 10,000 compounds, we identified a novel compound, 2-methyl-2H-pyrazole-3-carboxylic acid (2-methyl-4-o-tolylazo-phenyl)-amide (CH-223191), that potently inhibits TCDD-induced AhR-dependent transcription. In addition, CH-223191 blocked the binding of TCDD to AhR and inhibited TCDD-mediated nuclear translocation and DNA binding of AhR. These inhibitory effects of CH-223191 prevented the expression of cytochrome P450 enzymes, target genes of the AhR. Unlike many known antagonists of AhR, CH-223191 did not have detectable AhR agonist-like activity or estrogenic potency, suggesting that CH-223191 is a specific antagonist of AhR. It is noteworthy that CH-223191 potently prevented TCDD-elicited cytochrome P450 induction, liver toxicity, and wasting syndrome in mice. Taken together, these results demonstrate that this novel compound, CH-223191, may be a useful agent for the study of AhR-mediated signal transduction and the prevention of TCDD-associated pathology.
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Affiliation(s)
- Sun-Hee Kim
- School of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, South Korea
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Calabrese EJ. Cancer biology and hormesis: human tumor cell lines commonly display hormetic (biphasic) dose responses. Crit Rev Toxicol 2006; 35:463-582. [PMID: 16422392 DOI: 10.1080/10408440591034502] [Citation(s) in RCA: 134] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This article assesses the nature of the dose-response relationship of human tumor cell lines with a wide range of agents including antineoplastics, toxic substances (i.e., environmental pollutants), nonneoplastic drugs, endogenous agonists, and phyto-compounds. Hormetic-like biphasic dose responses were commonly reported and demonstrated in 136 tumor cell lines from over 30 tissue types for over 120 different agents. Quantitative features of these hormetic dose responses were similar, regardless of tumor cell line or agent tested. That is, the magnitude of the responses was generally modest, with maximum stimulatory responses typically not greater than twice the control, while the width of the stimulatory concentration range was usually less than 100-fold. Particular attention was directed to possible molecular mechanisms of the biphasic nature of the dose response, as well as clinical implications in which a low concentration of chemotherapeutic agent may stimulate tumor cell proliferation. Finally, these findings further support the conclusion that hormetic dose responses are broadly generalizable, being independent of biological model, endpoint measured, and stressor agent, and represent a basic feature of biological responsiveness to chemical and physical stressors.
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Affiliation(s)
- Edward J Calabrese
- Environmental Health Sciences, University of Massachusetts, Amherst 01003, USA.
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