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Glinin TS, Petrova MV, Shcherbinina V, Shubina AN, Dukelskaya AV, Starshova PV, Mamontova V, Burnusuz A, Godunova AO, Romashchenko AV, Moshkin MP, Khaitovich P, Daev EV. Pheromone of grouped female mice impairs genome stability in male mice through stress-mediated pathways. Sci Rep 2023; 13:17622. [PMID: 37848549 PMCID: PMC10582102 DOI: 10.1038/s41598-023-44647-w] [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: 07/22/2023] [Accepted: 10/11/2023] [Indexed: 10/19/2023] Open
Abstract
Population density is known to affect the health and survival of many species, and is especially important for social animals. In mice, living in crowded conditions results in the disruption of social interactions, chronic stress, and immune and reproductive suppression; however, the underlying mechanisms remain unclear. Here, we investigated the role of chemosignals in the regulation of mouse physiology and behavior in response to social crowding. The pheromone 2,5-dimethylpyrazine (2,5-DMP), which is released by female mice in crowded conditions, induced aversion, glucocorticoid elevation and, when chronic, resulted in reproductive and immune suppression. 2,5-DMP olfaction induced genome destabilization in bone marrow cells in a stress-dependent manner, providing a plausible mechanism for crowding-induced immune dysfunction. Interestingly, the genome-destabilizing effect of 2,5-DMP was comparable to a potent mouse stressor (immobilization), and both stressors led to correlated expression changes in genes regulating cellular stress response. Thus, our findings demonstrate that, in mice, the health effects of crowding may be explained at least in part by chemosignals and also propose a significant role of stress and genome destabilization in the emergence of crowding effects.
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Affiliation(s)
- Timofey S Glinin
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034.
- Open Longevity, 15260 Ventura Blvd, STE 2230, Sherman Oaks, CA, 91403, USA.
- Endocrine Neoplasia Laboratory, Department of Surgery, University of California, San Francisco, CA, 94143, USA.
| | - Marina V Petrova
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
- Center of Molecular and Cellular Biology, Skolkovo Institute of Science and Technology, Bolshoy Blv. 30, Moscow, Russia, 121205
| | - Veronika Shcherbinina
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
- Laboratory of Higher Nervous Activity Genetics, Pavlov Institute of Physiology, Russian Academy of Sciences, Makarova Emb. 6, Saint Petersburg, Russia, 199034
| | - Anastasia N Shubina
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
- Open Longevity, 15260 Ventura Blvd, STE 2230, Sherman Oaks, CA, 91403, USA
| | - Anna V Dukelskaya
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
| | - Polina V Starshova
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
| | - Victoria Mamontova
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
- Mildred Scheel Early Career Center for Cancer Research (Mildred-Scheel-Nachwuchszentrum, MSNZ), University Hospital Würzburg, Josef-Schneider Str. 2, 97080, Würzburg, Germany
- Department of Biochemistry and Molecular Biology, Biocenter of the University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Alexandra Burnusuz
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
| | - Alena O Godunova
- The Federal Research Center Institute of Cytology and Genetics, SB RAS, Academician Lavrentiev Avenue, 10, Novosibirsk, Russia, 630090
| | - Alexander V Romashchenko
- The Federal Research Center Institute of Cytology and Genetics, SB RAS, Academician Lavrentiev Avenue, 10, Novosibirsk, Russia, 630090
- International Tomography Center, Institutskaya St., 3A, Novosibirsk, Russia, 630090
- Federal Research Centre of Biological Systems and Agrotechnologies, RAS, St. January 9, 29, Orenburg, Russia, 460000
| | - Mikhail P Moshkin
- The Federal Research Center Institute of Cytology and Genetics, SB RAS, Academician Lavrentiev Avenue, 10, Novosibirsk, Russia, 630090
| | - Philipp Khaitovich
- Center for Neurobiology and Brain Restoration, Skolkovo Institute of Science and Technology, 3 Nobelya St., Moscow, Russia, 121205
| | - Eugene V Daev
- Department of Genetics and Biotechnology, Saint-Petersburg State University, Universitetskaya Emb., 7-9, Saint Petersburg, Russia, 199034
- Laboratory of Higher Nervous Activity Genetics, Pavlov Institute of Physiology, Russian Academy of Sciences, Makarova Emb. 6, Saint Petersburg, Russia, 199034
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Polsky LR, Rentscher KE, Carroll JE. Stress-induced biological aging: A review and guide for research priorities. Brain Behav Immun 2022; 104:97-109. [PMID: 35661679 PMCID: PMC10243290 DOI: 10.1016/j.bbi.2022.05.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/27/2022] [Accepted: 05/29/2022] [Indexed: 01/13/2023] Open
Abstract
Exposure to chronic adverse conditions, and the resultant activation of the neurobiological response cascade, has been associated with an increased risk of early onset of age-related disease and, recently, with an older biological age. This body of research has led to the hypothesis that exposure to stressful life experiences, when occurring repeatedly or over a prolonged period, may accelerate the rate at which the body ages. The mechanisms through which chronic psychosocial stress influences distinct biological aging pathways to alter rates of aging likely involve multiple layers in the physiological-molecular network. In this review, we integrate research using animal, human, and in vitro models to begin to delineate the distinct pathways through which chronic psychosocial stress may impact biological aging, as well as the neuroendocrine mediators (i.e., norepinephrine, epinephrine, and glucocorticoids) that may drive these effects. Findings highlight key connections between stress and aging, namely cellular metabolic activity, DNA damage, telomere length, cellular senescence, and inflammatory response patterns. We conclude with a guiding framework and conceptual model that outlines the most promising biological pathways by which chronic adverse conditions could accelerate aging and point to key missing gaps in knowledge where future research could best answer these pressing questions.
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Affiliation(s)
- Lilian R Polsky
- Cousins Center for Psychoneuroimmunology, Jane and Terry Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, United States
| | - Kelly E Rentscher
- Cousins Center for Psychoneuroimmunology, Jane and Terry Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, United States; Department of Psychiatry and Behavioral Medicine, Medical College of Wisconsin, United States.
| | - Judith E Carroll
- Cousins Center for Psychoneuroimmunology, Jane and Terry Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, United States
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3
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Yoo SS, Jorgensen TJ, Kennedy AR, Boice JD, Shapiro A, Hu TCC, Moyer BR, Grace MB, Kelloff GJ, Fenech M, Prasanna PGS, Coleman CN. Mitigating the risk of radiation-induced cancers: limitations and paradigms in drug development. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2014; 34:R25-52. [PMID: 24727460 PMCID: PMC7668684 DOI: 10.1088/0952-4746/34/2/r25] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The United States radiation medical countermeasures (MCM) programme for radiological and nuclear incidents has been focusing on developing mitigators for the acute radiation syndrome (ARS) and delayed effects of acute radiation exposure (DEARE), and biodosimetry technologies to provide radiation dose assessments for guiding treatment. Because a nuclear accident or terrorist incident could potentially expose a large number of people to low to moderate doses of ionising radiation, and thus increase their excess lifetime cancer risk, there is an interest in developing mitigators for this purpose. This article discusses the current status, issues, and challenges regarding development of mitigators against radiation-induced cancers. The challenges of developing mitigators for ARS include: the long latency between exposure and cancer manifestation, limitations of animal models, potential side effects of the mitigator itself, potential need for long-term use, the complexity of human trials to demonstrate effectiveness, and statistical power constraints for measuring health risks (and reduction of health risks after mitigation) following relatively low radiation doses (<0.75 Gy). Nevertheless, progress in the understanding of the molecular mechanisms resulting in radiation injury, along with parallel progress in dose assessment technologies, make this an opportune, if not critical, time to invest in research strategies that result in the development of agents to lower the risk of radiation-induced cancers for populations that survive a significant radiation exposure incident.
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Affiliation(s)
- Stephen S Yoo
- Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- SSY, PGSP and CNC had equal contribution in the preparation of this manuscript
| | - Timothy J Jorgensen
- Department of Radiation Medicine, Georgetown University School of Medicine, Washington DC, USA
| | - Ann R Kennedy
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA
| | - John D Boice
- Department of Medicine, Division of Epidemiology, Vanderbilt-Ingram Cancer Center, Vanderbilt School of Medicine, Nashville, TN, USA
- National Council on Radiation Protection and Measurements, Bethesda, MD, USA
| | - Alla Shapiro
- Office of Counter-Terrorism and Emergency Coordination, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD, USA
| | - Tom C-C Hu
- Division of CBRN Countermeasures, Biomedical Advanced Research and Development Authority (BARDA), Office of the Assistant Secretary for Preparedness and Response, Office of the Secretary, Department of Health and Human Services, Washington, DC, USA
| | - Brian R Moyer
- Division of CBRN Countermeasures, Biomedical Advanced Research and Development Authority (BARDA), Office of the Assistant Secretary for Preparedness and Response, Office of the Secretary, Department of Health and Human Services, Washington, DC, USA
| | - Marcy B Grace
- Division of CBRN Countermeasures, Biomedical Advanced Research and Development Authority (BARDA), Office of the Assistant Secretary for Preparedness and Response, Office of the Secretary, Department of Health and Human Services, Washington, DC, USA
| | - Gary J Kelloff
- Cancer Imaging Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD, USA
| | - Michael Fenech
- Commonwealth Scientific and Industrial Research Organisation, Adelaide, Australia
| | - Pataje G S Prasanna
- Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- SSY, PGSP and CNC had equal contribution in the preparation of this manuscript
| | - C Norman Coleman
- Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- SSY, PGSP and CNC had equal contribution in the preparation of this manuscript
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Assessment of DNA damage using cytokinesis-block micronucleus cytome assay in lymphocytes of dilated cardiomyopathy patients. Genet Res (Camb) 2014; 96:e001. [PMID: 24521770 DOI: 10.1017/s0016672314000019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Studies on the extent of DNA damage are undertaken to elucidate the nature and causes of genomic instability in any syndrome or disease progression in human. In this study, cytokinesis-block micronucleus cytome (CBMN Cyt) assay was employed to evaluate the extent of chromosomal instability or DNA damage in lymphocytes of patients suffering from dilated cardiomyopathy (DCM), a serious cardiac muscle disorder. Effect of DNA damage on the disease was also assessed by analysis of mutations in cardiac Troponin C type I (TNNC1) gene. Blood samples were collected from 48 DCM patients and 48 age- and sex-matched controls from Vellore region of South India. Significantly high frequencies of micronuclei (MNi) and genomic damage such as nuclear buds (NBUDs) and nucleoplasmic bridges (NPBs) were observed in the patient group as compared with the control group (P < 0·001). Molecular analysis revealed that no mutations were found in the TNNC1 gene. It was observed that although there was a high frequency of DNA damage in the lymphocytes of the patients, no correlation between severity of the phenotype and the frequencies of MNi, NPBs and NBUDS could be established. Our study appears to be the first one in which chromosomal instability was estimated using CBMN Cyt assay for DCM patients. Studies with a larger population size may help in validating the use of genetic markers for establishing frequencies and type of DNA damage in DCM. It will also help in understanding the effect of DNA damage on this disease.
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Battal D, Aktas A, Sungur MA, Kadioglu E, Eker ED, Sahin NO, Saygi S. In vivo genotoxicity assessment of sertraline by using alkaline comet assay and the cytokinesis-block micronucleus assay. Basic Clin Pharmacol Toxicol 2013; 113:339-46. [PMID: 23759069 DOI: 10.1111/bcpt.12095] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 05/29/2013] [Indexed: 11/27/2022]
Abstract
Sertraline, a leading antidepressant in the selective serotonin reuptake inhibitor (SSRI) group of medicine, is the most frequently prescribed drug. In this study, the alkaline comet assay and the cytokinesis-block micronucleus (CBMN) assay were used to investigate genotoxicity potential of sertraline in the peripheral blood lymphocytes (PBLs) of acute and chronic sertraline-treated Wistar albino rats. Male Wistar albino rats (n = 48) were administered low, medium and high doses of sertraline (10, 40, 80 mg/kg) for acute and chronic treatment by employing the gavage method to investigate genotoxicity of the administered drug. The data (tail length, tail intensity and tail moment) were analysed and indicated that there was no statistically significant difference between sertraline-treated groups and the negative control group with respect to DNA damage (p > 0.05). However, it was observed that acute sertraline administration had caused much more DNA damage in comparison with chronic treatment (p < 0.05). According to the data obtained from the CBMN test, an increase in the micronucleus (MN) frequency was detected at chronic and high-dose acute sertraline treatment. Based on the outcome of comet assay, detection of statistically insignificant DNA damage may be due to the fact that sertraline did not cause damage on DNA. Also, increase in frequency of MN in chronic sertraline treatment suggests that chronic sertraline administration might influence some mechanisms of cell division. Therefore, dose adjustment in depressed patients seems significant as it may help prevent further prognosis of the diseases.
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Affiliation(s)
- Dilek Battal
- Department of Toxicology, Faculty of Pharmacy, Mersin University, Mersin, Turkey
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Zhou P, Lian HY, Cui W, Wei DL, Li Q, Liu YX, Liu XY, Tan JH. Maternal-Restraint Stress Increases Oocyte Aneuploidy by Impairing Metaphase I Spindle Assembly and Reducing Spindle Assembly Checkpoint Proteins in Mice1. Biol Reprod 2012; 86:83. [DOI: 10.1095/biolreprod.111.095281] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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Daev EV, Dukel’skaya AV, Kazarova VE, Filkina YA. Effect of the estrus cycle stage on sensitivity to pheromone 2,5-dimethylpyrazine in the house mouse Mus musculus. J EVOL BIOCHEM PHYS+ 2007. [DOI: 10.1134/s0022093007060059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Gidron Y, Russ K, Tissarchondou H, Warner J. The relation between psychological factors and DNA-damage: a critical review. Biol Psychol 2006; 72:291-304. [PMID: 16406268 DOI: 10.1016/j.biopsycho.2005.11.011] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2005] [Revised: 11/28/2005] [Accepted: 11/29/2005] [Indexed: 11/23/2022]
Abstract
Investigating relations between psychological factors and DNA-damage can contribute to understanding how psychological factors affect the etiology and prognosis of relevant diseases (e.g., cancer, heart disease) at the fundamental level of mutated cells. This article critically reviews 21 studies in animals and humans testing relations between psychological factors and DNA-damage. After providing a biological background, we critically review each study. The findings in humans are mapped onto a model of stress, coping and health. These studies demonstrate causal relations between acute stressors and DNA-damage in animals and significant correlations between psychological factors (e.g., depression, coping) and DNA-damage in humans, which are moderated by gender. Possible mechanisms for these relations, limitations of studies, clinical implications and suggestions for future research are provided.
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Flint MS, Carroll JE, Jenkins FJ, Chambers WH, Han ML, Baum A. Genomic profiling of restraint stress-induced alterations in mouse T lymphocytes. J Neuroimmunol 2005; 167:34-44. [PMID: 16026860 DOI: 10.1016/j.jneuroim.2005.06.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2005] [Revised: 05/02/2005] [Accepted: 06/08/2005] [Indexed: 01/28/2023]
Abstract
DNA damage-, DNA repair-, and apoptosis-related gene expression in CD3(+) T lymphocytes of BALB/c mice subjected to 2-h restraint stress were compared to that in CD3(+)T lymphocytes from control mice. Using targeted cDNA arrays, significant increases in expression of genes serving as sensors of DNA damage, including MSH genes and RAD53, were observed. GADD45g, a gene responsible for regulating cell cycle arrest and apoptosis, was significantly induced; as was Pura, a gene involved in cell proliferation. These data suggest that, at the molecular level, stress activates genes responsible for priming the T cell to either undergo apoptosis or proliferation.
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Affiliation(s)
- Melanie S Flint
- University of Pittsburgh Cancer Institute and Department of Psychology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA.
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Bozkurt G, Abay E, Ates I, Karabogaz G, Ture M, Savran FO, Palanduz S, Temocin K, Algunes C. Clastogenicity of selective serotonin-reuptake inhibitors. Mutat Res 2004; 558:137-44. [PMID: 15036127 DOI: 10.1016/j.mrgentox.2003.11.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2003] [Revised: 11/13/2003] [Accepted: 11/22/2003] [Indexed: 01/09/2023]
Abstract
OBJECTIVE Selective serotonin-reuptake inhibitors (SSRIs) are used in the treatment of various forms of psychiatric disorders. Preclinical studies in laboratory animals have indicated that SSRIs were not genotoxic, but clear results from in vitro testing of SSRIs in a human cell system are currently scarce. The purpose of this study was to investigate whether SSRIs might be genotoxic. Sertraline was chosen as model SSRI, since it appears to be at least as well-tolerated as other SSRIs and may even have a more favourable side-effect profile. Unlike fluoxetine, fluvoxamine and paroxetine, sertraline has low potential for pharmacokinetic drug interactions. So, sertraline would be considered first in the treatment of psychiatric disorders requiring SSRI therapy in the future. We therefore examined peripheral lymphocytes from sertraline-treated patients for both sister chromatid exchanges (SCEs), cells with a high frequency of SCEs (HFC) and chromosome aberrations (CA) to evaluate the clastogenicity of SSRIs. METHOD Ten sertraline-treated patients meeting 'Structured Clinical Interview for DSM-IV' criteria for both generalized anxiety disorder and major depression were compared with 18 healthy volunteers and 18 non-treated patients with similar psychopathology. Sertraline hydrochloride was administered orally at 50 mg daily for 10 months to 1 year. The participants were selected on the basis of similar responses to a questionnaire assessing risk of genotoxicity related to other aspects of life. All participants had very similar lifestyles, medical histories, biological and dietary factors. All subjects were non-smokers. RESULT A statistically significant difference between patients with both generalized anxiety disorder and major depression (sertraline-treated or non-treated) and healthy volunteer groups was found by both SCE frequencies and HFC percentages. Both patient groups showed higher frequencies of SCEs than the healthy controls. No statistically significant difference was found between SCE frequencies or HFC percentages observed in sertraline-treated and non-treated patient groups. No statistical difference was found between groups with respect to the frequency of CA. CONCLUSION There are no adequate studies analysing the clastogenicity of SSRIs, in particular of sertraline. The SCE frequency, the percentage HFC and the frequency of CA in patients with both generalized anxiety disorder and major depression exposed to daily doses of sertraline do not indicate a possible clastogenic hazard. The increased SCE frequencies in patients with both generalized anxiety disorder and major depression in our study-irrespective of sertraline treatment-indicate a possible genotoxic effect. However, our observations were based on a limited number of patients; the results may be explained by psychogenic stress.
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Affiliation(s)
- Gokay Bozkurt
- Department of Medical Biology, Trakya University Medical Faculty, 22030 Edirne, Turkey.
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Sacharczuk M, Jaszczak K, Sadowski B. Cytogenetic comparison of the sensitivity to mutagens in mice selected for high (HA) and low (LA) swim stress-induced analgesia. Mutat Res 2003; 535:95-102. [PMID: 12547287 DOI: 10.1016/s1383-5718(02)00290-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Sensitivity to mutagens was studied in mouse lines selectively bred for high analgesia (HA) and for low analgesia (LA) induced by 3-min swimming in 20 degrees C water. Apart from pain-related traits HA mice also manifest, as compared to the LA line, higher emotionality in various behavioural tests, and cope worse with the hypothermic challenge of swimming in cold water. In the present study HA mice appeared more susceptible to the mutagenic effect of whole-body gamma-radiation and mitomycin-C injection. Both treatments caused higher frequencies of chromosomal aberrations and micronucleus in bone marrow cells in the HA than in the LA line. The results are discussed in terms of a genetic correlation between animals' susceptibility to environmental stressors and the mechanism of mutagenesis. As shown by our recent molecular study, the selection for magnitude of swim analgesia has differentiated the parental outbred population into two distinct genotypes characterised by specific minisatellite and microsatellite sequences for each line, which may be genetic markers of particular traits. We conceive that the breeding strategy, along with the differentiation of stress-related phenomena, has altered the frequencies of genes controlling DNA repair in each line.
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Affiliation(s)
- Mariusz Sacharczuk
- Department of Molecular Cytogenetics, Institute of Genetics and Animal Breeding of Polish Academy of Sciences in Jastrzêbiec, 05-556 Wolka Kosowska, Poland.
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Dimitroglou E, Zafiropoulou M, Messini-Nikolaki N, Doudounakis S, Tsilimigaki S, Piperakis SM. DNA damage in a human population affected by chronic psychogenic stress. Int J Hyg Environ Health 2003; 206:39-44. [PMID: 12621901 DOI: 10.1078/1438-4639-00187] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The effects of chronic psychogenic stress on the expression of DNA damage and cellular response to the damage were investigated. Using the comet assay, basal DNA damage was found to be similar in lymphocytes of both affected and non-affected populations (n = 30 in both groups). The induction of DNA damage in lymphocytes by external factors (H2O2 and gamma-irradiation), was also investigated. In these studies, cells were treated with 50, 100 and 150 microM H2O2 for 5 minutes or with 0.8, 2.5 and 4.2 Gy gamma-rays. A significant difference was found between the chronically stressed and the control populations, indicating the enhanced sensitivity of the former population. Cells were also held for 2 hours after the treatment, allowing time for the cells to deal with the induced DNA damage. Based on the level of residual DNA strand breaks, cells from the stressed population had more breaks than the controls. Gender does not alter these findings. In conclusion, our data indicate that cells from the stressed population were more sensitive to the induction of DNA damage and had higher level of residual damage. Therefore, stress conditions may cause the affected individuals to be susceptible to environmental mutagenic agents.
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Affiliation(s)
- Eva Dimitroglou
- DNA Repair Laboratory, Institute of Biology, National Center of Scientific Research, Demokritos, Division of Cell Biology and Biophysics, Department of Cell Biology, University of Athens, Athens, Greece
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Silva MJ, Dias A, Barreta A, Nogueira PJ, Castelo-Branco NAA, Boavida MG. Low frequency noise and whole-body vibration cause increased levels of sister chromatid exchange in splenocytes of exposed mice. TERATOGENESIS, CARCINOGENESIS, AND MUTAGENESIS 2002; 22:195-203. [PMID: 11948630 DOI: 10.1002/tcm.10012] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Chronic exposure to low frequency (LF) noise and whole-body vibration (WBV) induces both physiological and psychological alterations in man. Recently, we have shown that long-term occupational exposure to LF noise and WBV produces genotoxic effects in man expressed as an increase in sister chromatid exchange (SCE) levels in lymphocytes. The objectives of the present study were to investigate whether the observed effect could be reproduced in a murine model and, if so, which of the agents, LF noise alone or in combination with WBV, would be instrumental in the SCE induction. SCEs were analyzed in spleen lymphocytes of mice exposed to LF noise alone and in combination with WBV for 300 and 600 hr. An effect at the cell cycle kinetics level was also investigated. The results revealed significant increases in the mean SCE number per cell and in the proportion of cells with high frequency of SCEs (HFCs) in lymphocytes of mice submitted to combined noise and WBV over controls. No significant differences were found between single noise-exposed and control mice. A cell cycle delay was observed exclusively in the noise and WBV exposure groups. In conclusion, we demonstrated that, as in exposed workers, prolonged exposure to the combination of LF noise and WBV determines an increase in SCE level in mice while LF noise alone is not effective in SCE induction.
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Affiliation(s)
- M J Silva
- Center of Human Genetics, National Institute of Health, Lisbon, Portugal.
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Ingel F, Platonova V, Katosova L. Human emotional stress, dioxin blood content and genetic damage in Chapaevsk town. CHEMOSPHERE 2001; 43:989-998. [PMID: 11372893 DOI: 10.1016/s0045-6535(00)00460-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Forty five women from Chapaevsk town (three groups of 14-16 persons aged 20-40 yr) with different exposures to dioxins and different dioxin levels in blood were tested by four standard psychological questionnaires to detect emotional stress. Results of psychological testing were compared with individual dioxin blood contents and chromosome aberration level in blood cells. Results of the investigation were the next: (1) three groups tested differed significantly (P < or = 0.05) in emotional stress level, thus that highest level of stress was detected within the group with the highest dioxin blood contents (group "Workers"); (2) high level of correlation between emotional stress and individual dioxins blood contents (up P < or = 0.001) as well as between emotional stress and individual chromosome aberration level (up P < or = 0.05) was revealed. These results are discussed from the position of desadaptation induced by dioxins, which led to chromosome aberration induction.
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Affiliation(s)
- F Ingel
- A. N. Sysin Institute of Human Ecology and Environmental Hygiene, Russian Academy of Medical Sciences, Moscow, Russian Federation.
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