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Hemagirri M, Sasidharan S. Biology of aging: Oxidative stress and RNA oxidation. Mol Biol Rep 2022; 49:5089-5105. [PMID: 35449319 DOI: 10.1007/s11033-022-07219-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/27/2022] [Accepted: 02/01/2022] [Indexed: 01/10/2023]
Abstract
The prevalence of aged people has increased rapidly in recent years and brings profound demographic changes worldwide. The multi-level progression of aging occurs at diverse stages of complexity, from cell to organ systems and eventually to the human as a whole. The cellular and molecular damages are usually regulated by the cells; repair or degrade mechanisms. However, these mechanisms are not entirely functional; their effectiveness decreases with age due to influence from endogenous sources like oxidative stress, which all contribute to the aging process. The hunt for novel strategies to increase the man's longevity since ancient times needs better understandings of the biology of aging, oxidative stress, and their roles in RNA oxidation. The critical goal in developing new strategies to increase the man's longevity is to compile the novel developed knowledge on human aging into a single picture, preferably able to understand the biology of aging and the contributing factors. This review discusses the biology of aging, oxidative stress, and their roles in RNA oxidation, leading to aging in humans.
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Affiliation(s)
- Manisekaran Hemagirri
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia
| | - Sreenivasan Sasidharan
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia.
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Nie JJ, Pian YY, Hu JH, Fan GQ, Zeng LT, Ouyang QG, Gao ZX, Liu Z, Wang CC, Liu Q, Cai JP. Increased systemic RNA oxidative damage and diagnostic value of RNA oxidative metabolites during Shigella flexneri-induced intestinal infection. World J Gastroenterol 2021; 27:6248-6261. [PMID: 34712030 PMCID: PMC8515791 DOI: 10.3748/wjg.v27.i37.6248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/29/2021] [Accepted: 08/09/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Shigella flexneri (S. flexneri) is a major pathogen causing acute intestinal infection, but the systematic oxidative damage incurred during the course of infection has not been investigated.
AIM To investigate the incurred systemic RNA oxidative damage and the diagnostic value of RNA oxidative metabolites during S. flexneri-induced intestinal infection.
METHODS In this study, a Sprague-Dawley rat model of acute intestinal infection was established by oral gavage with S. flexneri strains. The changes in white blood cells (WBCs) and cytokine levels in blood and the inflammatory response in the colon were investigated. We also detected the RNA and DNA oxidation in urine and tissues.
RESULTS S. flexneri infection induced an increase in WBCs, C-reactive protein, interleukin (IL)-6, IL-10, IL-1β, IL-4, IL-17a, IL-10, and tumor necrosis factor α (TNF-α) in blood. Of note, a significant increase in urinary 8-oxo-7,8-dihydroguanosine (8-oxo-Gsn), an important marker of total RNA oxidation, was detected after intestinal infection (P = 0.03). The urinary 8-oxo-Gsn level returned to the baseline level after recovery from infection. In addition, the results of a correlation analysis showed that urinary 8-oxo-Gsn was positively correlated with the WBC count and the cytokines IL-6, TNF-α, IL-10, IL-1β, and IL-17α. Further detection of the oxidation in different tissues showed that S. flexneri infection induced RNA oxidative damage in the colon, ileum, liver, spleen, and brain.
CONCLUSION Acute infection induced by S. flexneri causes increased RNA oxidative damage in various tissues (liver, spleen, and brain) and an increase of 8-oxo-Gsn, a urinary metabolite. Urinary 8-oxo-Gsn may be useful as a biomarker for evaluating the severity and prognosis of infection.
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Affiliation(s)
- Jing-Jing Nie
- Department of Microbiology, National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Ya-Ya Pian
- Department of Microbiology, National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Ji-Hong Hu
- Department of Microbiology, National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Guo-Qing Fan
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Lv-Tao Zeng
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Qiu-Geng Ouyang
- Department of Pharmacy, Wenzhou Medical University, Wenzhou 325035, Zhejiang Province, China
| | - Zhen-Xiang Gao
- Department of Microbiology, National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Zhen Liu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Chen-Chen Wang
- Department of Pharmacy, Wenzhou Medical University, Wenzhou 325035, Zhejiang Province, China
| | - Qian Liu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Jian-Ping Cai
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
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Current perspectives on the clinical implications of oxidative RNA damage in aging research: challenges and opportunities. GeroScience 2020; 43:487-505. [PMID: 32529593 PMCID: PMC8110629 DOI: 10.1007/s11357-020-00209-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/28/2020] [Indexed: 02/05/2023] Open
Abstract
Ribonucleic acid (RNA) molecules can be easily attacked by reactive oxygen species (ROS), which are produced during normal cellular metabolism and under various oxidative stress conditions. Numerous findings report that the amount of cellular 8-oxoG, the most abundant RNA damage biomarker, is a promising target for the sensitive measurement of oxidative stress and aging-associated diseases, including neuropsychiatric disorders. Most importantly, available data suggest that RNA oxidation has important implications for various signaling pathways and gene expression regulation in aging-related diseases, highlighting the necessity of using combinations of RNA oxidation adducts in both experimental studies and clinical trials. In this review, we primarily describe evidence for the effect of oxidative stress on RNA integrity modulation and possible quality control systems. Additionally, we discuss the profiles and clinical implications of RNA oxidation products that have been under intensive investigation in several aging-associated medical disorders.
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Profiling of Alzheimer’s disease related genes in mild to moderate vitamin D hypovitaminosis. J Nutr Biochem 2019; 67:123-137. [DOI: 10.1016/j.jnutbio.2019.01.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 12/13/2018] [Accepted: 01/29/2019] [Indexed: 02/01/2023]
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Hofer T, Duale N, Muusse M, Eide DM, Dahl H, Boix F, Andersen JM, Olsen AK, Myhre O. Restoration of Cognitive Performance in Mice Carrying a Deficient Allele of 8-Oxoguanine DNA Glycosylase by X-ray Irradiation. Neurotox Res 2017; 33:824-836. [DOI: 10.1007/s12640-017-9833-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 10/13/2017] [Accepted: 10/18/2017] [Indexed: 12/13/2022]
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Singh M, Bhatia P, Khera S, Trehan A. Emerging role of NUDT15 polymorphisms in 6-mercaptopurine metabolism and dose related toxicity in acute lymphoblastic leukaemia. Leuk Res 2017; 62:17-22. [DOI: 10.1016/j.leukres.2017.09.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 09/24/2017] [Indexed: 01/28/2023]
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Pérez-Cañamás A, Sarroca S, Melero-Jerez C, Porquet D, Sansa J, Knafo S, Esteban JA, Sanfeliu C, Ledesma MD. A diet enriched with plant sterols prevents the memory impairment induced by cholesterol loss in senescence-accelerated mice. Neurobiol Aging 2016; 48:1-12. [PMID: 27622776 DOI: 10.1016/j.neurobiolaging.2016.08.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 07/07/2016] [Accepted: 08/09/2016] [Indexed: 01/02/2023]
Abstract
Cholesterol reduction at the neuronal plasma membrane has been related to age-dependent cognitive decline. We have used senescent-accelerated mice strain 8 (SAMP8), an animal model for aging, to examine the association between cholesterol loss and cognitive impairment and to test strategies to revert this process. We show that the hippocampus of SAMP8 mice presents reduced cholesterol levels and enhanced amount of its degrading enzyme Cyp46A1 (Cyp46) already at 6 months of age. Cholesterol loss accounts for the impaired long-term potentiation in these mice. Plant sterol (PSE)-enriched diet prevents long-term potentiation impairment and cognitive deficits in SAMP8 mice without altering cholesterol levels. PSE diet also reduces the abnormally high amyloid peptide levels in SAMP8 mice brains and restores membrane compartmentalization of presenilin1, the catalytic component of the amyloidogenic γ-secretase. These results highlight the influence of cholesterol loss in age-related cognitive decline and provide with a noninvasive strategy to counteract it. Our results suggest that PSE overtake cholesterol functions in the brain contributing to reduce deleterious consequences of cholesterol loss during aging.
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Affiliation(s)
| | - Sara Sarroca
- Institut d'Investigacions Biomèdiques de Barcelona, CSIC, Barcelona, Spain
| | | | - David Porquet
- Institut d'Investigacions Biomèdiques de Barcelona, CSIC, Barcelona, Spain
| | - Joan Sansa
- Departament de Psicologia Bàsica, Universitat de Barcelona, Barcelona, Spain
| | - Shira Knafo
- Centro Biología Molecular Severo Ochoa, CSIC-UAM, Madrid, Spain; Unidad de Biofísica CSIC-UPV/EHU, Campus Universidad del País Vasco, Leioa, Spain; IkerBasque, Basque Foundation for Science, Basque Country, Spain
| | - Jose A Esteban
- Centro Biología Molecular Severo Ochoa, CSIC-UAM, Madrid, Spain
| | - Coral Sanfeliu
- Institut d'Investigacions Biomèdiques de Barcelona, CSIC, Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain.
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Kanouchi H, Kakimoto T, Nakano H, Suzuki M, Nakai Y, Shiozaki K, Akikoka K, Otomaru K, Nagano M, Matsumoto M. The Brewed Rice Vinegar Kurozu Increases HSPA1A Expression and Ameliorates Cognitive Dysfunction in Aged P8 Mice. PLoS One 2016; 11:e0150796. [PMID: 26943920 PMCID: PMC4778952 DOI: 10.1371/journal.pone.0150796] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 02/10/2016] [Indexed: 01/06/2023] Open
Abstract
Kurozu is a traditional Japanese rice vinegar. During fermentation and aging of the Kurozu liquid in an earthenware jar over 1 year, a solid residue called Kurozu Moromi is produced. In the present study, we evaluated whether concentrated Kurozu or Kurozu Moromi could ameliorate cognitive dysfunction in the senescence-accelerated P8 mouse. Senescence-accelerated P8 mice were fed 0.25% (w/w) concentrated Kurozu or 0.5% (w/w) Kurozu Moromi for 4 or 25 weeks. Kurozu suppressed cognitive dysfunction and amyloid accumulation in the brain, while Kurozu Moromi showed a tendency to ameliorate cognitive dysfunction, but the effect was not significant. We hypothesize that concentrated Kurozu has an antioxidant effect; however, the level of lipid peroxidation in the brain did not differ in senescence-accelerated P8 mice. DNA microarray analysis indicated that concentrated Kurozu increased HSPA1A mRNA expression, a protein that prevents protein misfolding and aggregation. The increase in HSPA1A expression by Kurozu was confirmed using quantitative real-time PCR and immunoblotting methods. The suppression of amyloid accumulation by concentrated Kurozu may be associated with HSPA1A induction. However, concentrated Kurozu could not increase HSPA1A expression in mouse primary neurons, suggesting it may not directly affect neurons.
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Affiliation(s)
- Hiroaki Kanouchi
- Department of Veterinary Pathobiology, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
- * E-mail:
| | - Toshiaki Kakimoto
- Department of Veterinary Pathobiology, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Hideya Nakano
- Department of Veterinary Pathobiology, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Masahiro Suzuki
- Department of Veterinary Pathobiology, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Yuji Nakai
- Institute for Food Sciences, Hirosaki University, Yanagawa, Aomori, Japan
| | - Kazuhiro Shiozaki
- Faculty of Fisheries, Kagoshima University, Shimoarata, Kagoshima, Japan
| | - Kohei Akikoka
- Department of Veterinary Histopathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Konosuke Otomaru
- Veterinary Clinical Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | | | - Mitsuharu Matsumoto
- Department of Veterinary Anatomy, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
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Song WJ, Jiang P, Cai JP, Zheng ZQ. Expression of Cytoplasmic 8-oxo-Gsn and MTH1 Correlates with Pathological Grading in Human Gastric Cancer. Asian Pac J Cancer Prev 2015; 16:6335-8. [DOI: 10.7314/apjcp.2015.16.15.6335] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Dong Y, Wang Y, Liu Y, Yang N, Zuo P. Phytoestrogen α-zearalanol ameliorates memory impairment and neuronal DNA oxidation in ovariectomized mice. Clinics (Sao Paulo) 2013; 68:1255-62. [PMID: 24141843 PMCID: PMC3782724 DOI: 10.6061/clinics/2013(09)13] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 05/07/2013] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the effect of a novel phytoestrogen, α-Zearalanol, on Alzheimer's disease-related memory impairment and neuronal oxidation in ovariectomized mice. METHODS Female C57/BL6 mice were ovariectomized or received sham operations and treatment with equivalent doses of 17β-estradiol or α-Zearalanol for 8 weeks. Their spatial learning and memory were analyzed using the Morris water maze test. The antioxidant enzyme activities and reactive oxygen species generation, neuronal DNA oxidation, and MutT homolog 1 expression in the hippocampus were measured. RESULTS Treatment with 17β-estradiol or α-Zearalanol significantly improved spatial learning and memory performance in ovariectomized mice. In addition, 17β-estradiol and α-Zearalanol attenuated the decrease in antioxidant enzyme activities and increased reactive oxygen species production in ovariectomized mice. The findings indicated a significant elevation in hippocampi neuronal DNA oxidation and reduction in MutT homolog 1 expression in estrogen-deficient mice, but supplementation with 17β-estradiol or α-Zearalanol efficaciously ameliorated this situation. CONCLUSION These results demonstrate that α-Zearalanol is potentially beneficial for improving memory impairments and neuronal oxidation damage in a manner similar to that of 17β-estradiol. Therefore, the compound may be a potential therapeutic agent that can ameliorate neurodegenerative disorders related to estrogen deficiency.
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Affiliation(s)
- Yilong Dong
- School of Medicine, Yunnan University, KunmingYunnan, China
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Canugovi C, Misiak M, Ferrarelli LK, Croteau DL, Bohr VA. The role of DNA repair in brain related disease pathology. DNA Repair (Amst) 2013; 12:578-87. [PMID: 23721970 DOI: 10.1016/j.dnarep.2013.04.010] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Oxidative DNA damage is implicated in brain aging, neurodegeneration and neurological diseases. Damage can be created by normal cellular metabolism, which accumulates with age, or by acute cellular stress conditions which create bursts of oxidative damage. Brain cells have a particularly high basal level of metabolic activity and use distinct oxidative damage repair mechanisms to remove oxidative damage from DNA and dNTP pools. Accumulation of this damage in the background of a functional DNA repair response is associated with normal aging, but defective repair in brain cells can contribute to neurological dysfunction. Emerging research strongly associates three common neurodegenerative conditions, Alzheimer's, Parkinson's and stroke, with defects in the ability to repair chronic or acute oxidative damage in neurons. This review explores the current knowledge of the role of oxidative damage repair in preserving brain function and highlights the emerging models and methods being used to advance our knowledge of the pathology of neurodegenerative disease.
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Affiliation(s)
- Chandrika Canugovi
- Laboratory of Molecular Gerontology, National Institute on Aging, Intramural Research Program, Baltimore, MD 21224, USA
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Age-dependent accumulation of 8-oxoguanine in the DNA and RNA in various rat tissues. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:303181. [PMID: 23738036 PMCID: PMC3657452 DOI: 10.1155/2013/303181] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 03/20/2013] [Indexed: 02/08/2023]
Abstract
The relationship between the oxidative damage of nucleic acids and aging of animals was investigated by analyzing the nucleic acids derived from various tissue specimens of naturally aged Sprague-Dawley (SD) rats. For this purpose, we established an accurate and sensitive isotope-diluted LC-MS/MS method to determine the levels of 8-oxo-7,8-dihydro-2′-deoxyguanosine (8-oxo-dGsn) in DNA and 8-oxo-7,8-dihydroguanosine (8-oxo-Gsn) in RNA. An age-dependent increase in oxidative DNA and RNA damage was observed in the various organs examined, including the brain, liver, kidneys, and testes. Similar increases in the 8-oxo-dGsn and 8-oxo-Gsn contents were observed in three parts of the brain, the hippocampus, cerebral cortex, and cerebellum, among which, the values for the hippocampus were always the highest. When the oxidized guanosine metabolites were quantified with urine, a similar age-dependent increase was observed for both 8-oxo-dGsn and 8-oxo-Gsn. However, unlike the results of nucleic acid samples derived from the tissues, the amount of 8-oxo-Gsn was significantly higher compared to that of 8-oxo-dGsn, probably reflecting the fact that RNA degradation occurs more frequently than DNA degradation. Our finding indicates that the amount of urinary 8-oxo-Gsn could be considered as a biomarker for the sensitive measurement of oxidative stress and aging.
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Sattarova EA, Sinitsyna OI, Vasyunina EA, Duzhak AB, Kolosova NG, Zharkov DO, Nevinsky GA. Age-dependent guanine oxidation in DNA of different brain regions of Wistar rats and prematurely aging OXYS rats. Biochim Biophys Acta Gen Subj 2013; 1830:3542-52. [PMID: 23403132 DOI: 10.1016/j.bbagen.2013.01.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 01/17/2013] [Accepted: 01/21/2013] [Indexed: 12/15/2022]
Abstract
BACKGROUND Oxidative damage to the cell, including the formation of 8-oxoG, has been regarded as a significant factor in carcinogenesis and aging. An inbred prematurely aging rat strain (OXYS) is characterized by high sensitivity to oxidative stress, lipid peroxidation, protein oxidation, DNA rearrangements, and pathological conditions paralleling several human degenerative diseases including learning and memory deterioration. METHODS We have used monoclonal antibodies against a common pre-mutagenic base lesion 8-oxoguanine (8-oxoG) and 8-oxoguanine DNA glycosylase (OGG1) in combination with indirect immunofluorescence microscopy and image analysis to follow the relative amounts and distribution of 8-oxoG and OGG1 in various cells of different brain regions from OXYS and control Wistar rats. RESULTS It was shown that 8-oxoG increased with age in mature neurons, nestin- and glial fibrillary acidic protein (GFAP)-positive cells of hippocampus and frontal cortex in both strains of rats, with OXYS rats always displaying statistically significantly higher levels of oxidative DNA damage than Wistar rats. The relative content of 8-oxoG and OGG1 in nestin- and GFAP-positive cells was higher than in mature neurons in both Wistar and OXYS rats. However, there was no significant interstrain difference in the content of OGG1 for all types of cells and brain regions analyzed, and no difference in the relative content of 8-oxoG between different brain regions. CONCLUSIONS Oxidation of guanine may play an important role in the development of age-associated decrease in memory and learning capability of OXYS rats. GENERAL SIGNIFICANCE The findings are important for validation of the OXYS rat strain as a model of mammalian aging.
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Affiliation(s)
- Evgeniya A Sattarova
- SB RAS Institute of Chemical Biology and Fundamental Medicine, Novosibirsk, Russia
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Pallàs M. Senescence-Accelerated Mice P8: A Tool to Study Brain Aging and Alzheimer's Disease in a Mouse Model. ACTA ACUST UNITED AC 2012. [DOI: 10.5402/2012/917167] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The causes of aging remain unknown, but they are probably intimately linked to a multifactorial process that affects cell networks to varying degrees. Although a growing number of aging and Alzheimer’s disease (AD) animal models are available, a more comprehensive and physiological mouse model is required. In this context, the senescence-accelerated mouse prone 8 (SAMP8) has a number of advantages, since its rapid physiological senescence means that it has about half the normal lifespan of a rodent. In addition, according to data gathered over the last five years, some of its behavioral traits and histopathology resemble AD human dementia. SAMP8 has remarkable pathological similarities to AD and may prove to be an excellent model for acquiring more in-depth knowledge of the age-related neurodegenerative processes behind brain senescence and AD in particular. We review these facts and particularly the data on parameters related to neurodegeneration. SAMP8 also shows signs of aging in the immune, vascular, and metabolic systems, among others.
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Affiliation(s)
- Mercè Pallàs
- Unitat de Farmacologia i Farmacognòosia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona y Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Nucli Universitari de Pedralbes, 08028 Barcelona, Spain
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Shi F, Nie B, Gan W, Zhou XY, Takagi Y, Hayakawa H, Sekiguchi M, Cai JP. Oxidative damage of DNA, RNA and their metabolites in leukocytes, plasma and urine ofMacaca mulatta: 8-oxoguanosine in urine is a useful marker for aging. Free Radic Res 2012; 46:1093-8. [DOI: 10.3109/10715762.2012.689428] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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17
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Gan W, Nie B, Shi F, Xu XM, Qian JC, Takagi Y, Hayakawa H, Sekiguchi M, Cai JP. Age-dependent increases in the oxidative damage of DNA, RNA, and their metabolites in normal and senescence-accelerated mice analyzed by LC-MS/MS: urinary 8-oxoguanosine as a novel biomarker of aging. Free Radic Biol Med 2012; 52:1700-7. [PMID: 22348977 DOI: 10.1016/j.freeradbiomed.2012.02.016] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 01/23/2012] [Accepted: 02/08/2012] [Indexed: 11/30/2022]
Abstract
A sensitive and accurate isotope-diluted LC-MS/MS method was developed for determination of 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxo-dGsn), derived from DNA, and 8-oxo-7,8-dihydroguanosine (8-oxo-Gsn), derived from RNA, in various tissue specimens obtained from normal SAMR1 and senescence-accelerated SAMP8 mice. An age-dependent accumulation of oxidative DNA and RNA damage was observed in all the organs examined, namely, the brain, liver, lungs, heart, kidneys, and testes. Among these, the brain samples exhibited the highest values for DNA damage. These age-related increases in the 8-oxoguanine content in DNA and RNA occurred more rapidly in SAMP8 than in SAMR1 mice. Age-related increases in the contents of 8-oxo-dGsn and 8-oxo-Gsn were also observed in the plasma and urine; however, the ratios of 8-oxo-Gsn to 8-oxo-dGsn in these samples were considerably higher (6 to 13) compared with the values for the samples derived from other tissues (roughly 1), indicating that measurement of 8-oxo-Gsn in urine could be a novel means of evaluating the aging process.
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Affiliation(s)
- Wei Gan
- Graduate School, Chinese Academy of Medical Sciences and Peking Union Medical College, Dongdan, Beijing 100730, China
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Hippocampal gene network analysis suggests that coral calcium hydride may reduce accelerated senescence in mice. Nutr Res 2011; 31:863-72. [DOI: 10.1016/j.nutres.2011.09.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Revised: 08/22/2011] [Accepted: 09/19/2011] [Indexed: 01/26/2023]
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López-Ramos JC, Jurado-Parras MT, Sanfeliu C, Acuña-Castroviejo D, Delgado-García JM. Learning capabilities and CA1-prefrontal synaptic plasticity in a mice model of accelerated senescence. Neurobiol Aging 2011; 33:627.e13-26. [PMID: 21664007 DOI: 10.1016/j.neurobiolaging.2011.04.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 02/23/2011] [Accepted: 04/02/2011] [Indexed: 01/23/2023]
Abstract
SAMP8 mice represent a suitable model of accelerated senescence as compared with SAMR1 animals presenting normal aging. Five-month-old SAMP8 mice presented reflex eyelid responses like those of SAMR1 controls, but were incapable of acquiring classically-conditioned eye blink responses in a trace (230 milliseconds [ms] of interstimulus interval) paradigm. Although SAMP8 mice presented a normal paired-pulse facilitation of the hippocampal CA1-medial prefrontal synapse, an input/output curve study revealed smaller field excitatory postsynaptic potentials (fEPSPs) in response to strong stimulations of the CA1-prefrontal pathway. Moreover, SAMP8 mice did not show any activity-dependent potentiation of the CA1-prefrontal synapse across the successive conditioning sessions shown by SAMR1 animals. In addition, SAMP8 mice presented a functional deficit during an object recognition test, continuing to explore the familiar object when controls moved to the novel one. Alert behaving SAMP8 mice presented a significant deficit in long-term potentiation (LTP) at the CA1-medial prefrontal synapse. According to the present results, SAMP8 mice present noticeable functional deficits in hippocampal and prefrontal cortical circuits directly related with the acquisition and storage of new motor and cognitive abilities.
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Oxidative Damage to RNA and Expression Patterns of MTH1 in the Hippocampi of Senescence-Accelerated SAMP8 Mice and Alzheimer’s Disease Patients. Neurochem Res 2011; 36:1558-65. [DOI: 10.1007/s11064-011-0484-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2011] [Indexed: 11/26/2022]
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Rai P. Oxidation in the nucleotide pool, the DNA damage response and cellular senescence: Defective bricks build a defective house. Mutat Res 2010; 703:71-81. [PMID: 20673809 DOI: 10.1016/j.mrgentox.2010.07.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Accepted: 07/19/2010] [Indexed: 12/20/2022]
Abstract
Activation of persistent DNA damage response (DDR) signaling is associated with the induction of a permanent proliferative arrest known as cellular senescence, a phenomenon intrinsically linked to both tissue aging as well as tumor suppression. The DNA damage observed in senescent cells has been attributed to elevated levels of reactive oxygen species (ROS), failing DNA damage repair processes, and/or oncogenic activation. It is not clear how labile molecules such as ROS are able to damage chromatin-bound DNA to a sufficient extent to invoke persistent DNA damage and DDR signaling. Recent evidence suggests that the nucleotide pool is a significant target for oxidants and that oxidized nucleotides, once incorporated into genomic DNA, can lead to the induction of a DNA strand break-associated DDR that triggers senescence in normal cells and in cells sustaining oncogene activation. Evasion of this DDR and resulting senescence is a key step in tumor progression. This review will explore the role of oxidation in the nucleotide pool as a major effector of oxidative stress-induced genotoxic damage and DDR in the context of cellular senescence and tumorigenic transformation.
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Affiliation(s)
- Priyamvada Rai
- Division of Gerontology and Geriatric Medicine, Department of Medicine, Rosenstiel Medical Sciences Building, Rm#7094/Locator Code: D-503, 1600 NW 10th Ave, Miller School of Medicine, University of Miami, Miami, FL 33136, United States.
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