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Koyuncu H, Kara N, Dabak Ş. Investigation of the possible effects of night shift on telomere length and mtDNA copy number in nurses. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2024:1-14. [PMID: 38830229 DOI: 10.1080/15257770.2024.2348089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 04/22/2024] [Indexed: 06/05/2024]
Abstract
In this study, we aimed to investigate the impacts of altered circadian rhythm on telomere length and mtDNA copy number (mtDNA-CN) in nurses working night shifts. In our study, 52 healthy nurses working in shifts at Ondokuz Mayıs University Hospital and 45 healthy control subjects working during the day were included. qRT-PCR technique was used for the determination of telomere length and mtDNA-CN. It was observed that the shift-work group had poor sleep quality (p = 0.004), feeling tired (p < 0.01) and stressed (p = 0.02) more than control group working during the day. Nurses working in shifts were found to have 1.18 times longer telomeres with respect to the control group working during the day (p = 0.005). When compared among shift workers, poor sleep quality and insufficient sleep duration shortened telomeres (r = 0.32; p = 0.02). There was no statistically significantdisparity regarding mtDNA-CN among the nurses working in shifts and the control group working during the day (p = 0.07). Insufficient sleep was associated with decreased mtDNA-CN when shift-working nurses were compared according to sleep quality (p = 0.006). Furthermore, mtDNA-CN of nurses with poor sleep quality was correlated with lower mtDNA-CN in comparison to nurses with good sleep quality (r = 0.284; p = 0.04). The mtDNA-CN of the nurses was positively associated with the sleep duration the night sleep before the night shift (r = 0.32; p = 0.02). Inadequate sleep duration and quality were observed to cause a reduction in mtDNA-CN of nurses. In conclusion, it has been observed that poor sleep quality and duration are related to shortened telomere length and decreased mtDNA-CN in night shift nurses.
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Affiliation(s)
- Hilal Koyuncu
- Faculty of Medicine, Department of Medical Biology, Ondokuz Mayıs University, Samsun, Turkey
| | - Nurten Kara
- Faculty of Medicine, Department of Medical Biology, Ondokuz Mayıs University, Samsun, Turkey
| | - Şennur Dabak
- Faculty of Medicine, Department of Public Health, Ondokuz Mayıs University, Samsun, Turkey
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U-pathi J, Yeh YC, Chen CW, Owaga EE, Hsieh RH. Relationship between Aspartame-Induced Cerebral Cortex Injury and Oxidative Stress, Inflammation, Mitochondrial Dysfunction, and Apoptosis in Sprague Dawley Rats. Antioxidants (Basel) 2023; 13:2. [PMID: 38275622 PMCID: PMC10812821 DOI: 10.3390/antiox13010002] [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: 10/30/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 01/27/2024] Open
Abstract
There are emerging concerns about the potential cerebral cortex injury from aspartame due to the accumulation of the various neurotoxic metabolic components in the central nervous system after long-term dietary exposure. The aim of this study was to evaluate the effect of oral aspartame consumption on cerebral cortex injury in the rat brain, and further evaluate the various underlying molecular mechanisms, with a special focus on oxidative stress, inflammation, mitochondrial dysfunction, and apoptosis pathways. Sprague Dawley rats (nineteen, female) were randomly sub-divided into three groups: (i) normal diet with vehicle: control group (five rats), (ii) low dose of aspartame group (LA): seven rats received 30 mg/kg body weight (bw) daily doses of aspartame, (iii) high dose of aspartame group (HA): seven rats received 60 mg/kg bw daily doses of aspartame. After 8 weeks, the LA and HA groups showed lower expression levels of brain-derived neurotrophic factor (BDNF), antioxidant enzyme activity (SOD2, CAT), antioxidant marker (Nrf2), inflammatory response (IκB), mitochondrial biogenesis (Sirt1, PGC1α, Nrf1, TFAM), mitochondrial DNA (mtDNA) copy number, and apoptosis-related proteins (Bax, Caspase-3) expressions. Aspartame administration also elevated oxidative stress levels (Malondialdehyde, MDA), 8-hydroxy-2-deoxy guanosine (8-OHdG), PGE2 and COX-2 expressions, pro-inflammatory cytokines (TNFα, IL6, IL1β), antioxidant marker expression (Keap1), inflammatory responses (iNOS, NFκB), and glial fibrillary acidic protein (GFAP) levels in the cerebral cortex of the rats, thereby contributing to the reduced survival of pyramidal cells and astrocyte glial cells of the cerebral cortex. Therefore, these findings imply that aspartame-induced neurotoxicity in rats' cerebral cortex could be regulated through four mechanisms: inflammation, enhanced oxidant stress, decreased mitochondrial biogenesis, and apoptosis pathways.
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Affiliation(s)
- Jureeporn U-pathi
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan; (J.U.-p.); (Y.-C.Y.)
| | - Yen-Chia Yeh
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan; (J.U.-p.); (Y.-C.Y.)
| | - Chia-Wen Chen
- Research Center of Nutritional Medicine, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan;
| | - Eddy E. Owaga
- Institute of Food Bioresources Technology, Dedan Kimathi University of Technology, Nyeri P.O. Box 657-10100, Kenya;
| | - Rong-Hong Hsieh
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan; (J.U.-p.); (Y.-C.Y.)
- Research Center of Nutritional Medicine, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan;
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan
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3
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Çağlar Çil Ö, Metin ÖK, Çayır A. Evaluation of Mitochondrial Copy Number in Thyroid Disorders. Arch Med Res 2022; 53:711-717. [DOI: 10.1016/j.arcmed.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/16/2022] [Accepted: 10/12/2022] [Indexed: 11/02/2022]
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Alikhani M, Touati E, Karimipoor M, Vosough M, Eybpoosh S, Mohammadi M. Dynamic Changes of Mitochondrial DNA Copy Number in Gastrointestinal Tract Cancers: A Systematic Review and Meta-Analysis. Cancer Invest 2021; 39:163-179. [PMID: 33290105 DOI: 10.1080/07357907.2020.1857394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We have performed a systematic review and meta-analysis for evaluation of mitochondrial DNA copy number (mtDNA-CN) alterations in peripheral blood leukocytes (PBL), and tumor tissues of gastrointestinal tract (GIT) cancers. Analysis of the PBL demonstrated a significant decrease [OR: 0.6 (0.5, 0.8)] and increase [OR: 1.4 (1.1, 1.9)] prior to and following GIT cancer development, respectively. This trend was more evident in CRC, and GC subgroups. Analysis of tissue yielded high levels of heterogeneity. However, the mean difference for the CRC subgroup was statistically significant [1.5 (1.0, 2.2)]. Our analysis suggests mtDNA-CN deserves further investigations as a GIT-cancer screening tool.
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Affiliation(s)
- Mehdi Alikhani
- HPGC Research Group, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Eliette Touati
- Institut Pasteur, Unit of Helicobacter Pathogenesis, CNRS UMR2001, Paris Cedex 15, France
| | - Morteza Karimipoor
- Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Massoud Vosough
- Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Sana Eybpoosh
- Department of Epidemiology and Biostatistics, Research Centre for Emerging and Reemerging Infectious Diseases, Pasteur Institute of Iran, Tehran, Iran
| | - Marjan Mohammadi
- HPGC Research Group, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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Lv X, Zhou D, Ge B, Chen H, Du Y, Liu S, Ji Y, Sun C, Wang G, Gao Y, Li W, Huang G. Association of Folate Metabolites and Mitochondrial Function in Peripheral Blood Cells in Alzheimer's Disease: A Matched Case-Control Study. J Alzheimers Dis 2020; 70:1133-1142. [PMID: 31306134 DOI: 10.3233/jad-190477] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The nutrition state plays an important role in the progress of aging. Folate may play a role in protecting mitochondrial (mt) DNA by reducing oxidative stress. OBJECTIVE The primary aim of this study was to examine the association of mitochondrial oxidative damage with risk of Alzheimer's disease (AD), and to explore the possible role of folate metabolites in this association in a matched case-control study. METHODS Serum folate metabolites and mitochondrial function in peripheral blood cells were determined in 82 AD cases and 82 healthy controls, individually matched by age, gender, and education. RESULTS AD patients had lower serum levels of folate and higher homocysteine (Hcy) concentration. AD patients had a reduced mtDNA copy number, higher mtDNA deletions, and increased 8-OHdG content in mtDNA indicative of reduced mitochondrial function. The highest level of mtDNA copy number would decrease the risk of AD (OR = 0.157, 95% CI: 0.058-0.422) compared to the lowest level, independently of serum folate, and Hcy levels. Serum folate levels correlated with low 8-OHdG content in mtDNA both in AD patients and controls, independently of serum Hcy level. Moreover, serum Hcy levels correlated with low copy number in mtDNA both in AD patients and controls, independently of serum folate levels. CONCLUSION In conclusion, mitochondrial function in peripheral blood cells could be associated with risk of AD independent of multiple covariates. AD patients with a folate deficiency or hyperhomocysteinemia had low mitochondrial function in peripheral blood cells. However, further randomized controlled trials are need to determine a causal effect.
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Affiliation(s)
- Xin Lv
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Dongtao Zhou
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Baojin Ge
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Hui Chen
- School of Nursing, Tianjin Medical University, Tianjin, China
| | - Yue Du
- Department of Social Medicine and Health Management, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Shuai Liu
- Department of Neurology, and Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Yong Ji
- Department of Neurology, and Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Changqing Sun
- Neurosurgical Department of Baodi Clinical College of Tianjin Medical University, Tianjin, China
| | - Guangshun Wang
- Department of Tumor, Baodi Clinical College of Tianjin Medical University, Tianjin, China
| | - Yuxia Gao
- Department of Cardiology, General Hospital of Tianjin Medical University, Tianjin, China
| | - Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
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Wang XB, Cui NH, Liu X, Liu X. Mitochondrial 8-hydroxy-2'-deoxyguanosine and coronary artery disease in patients with type 2 diabetes mellitus. Cardiovasc Diabetol 2020; 19:22. [PMID: 32075646 PMCID: PMC7029479 DOI: 10.1186/s12933-020-00998-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 02/06/2020] [Indexed: 12/14/2022] Open
Abstract
Background Little is known about whether mitochondria 8-hydroxy-2′-deoxyguanosine (8-OHdG), a biomarker of mitochondrial DNA (mtDNA) oxidative damage, contributes to the development of coronary artery disease (CAD) in diabetic patients. Here, we explored the associations of mtDNA 8-OHdG in leukocytes with obstructive CAD, coronary stenosis severity, cardiovascular biomarkers, and 1-year adverse outcomes after coronary revascularization in patients with type 2 diabetes mellitus (T2DM). Methods In a total of 1920 consecutive patients with T2DM who underwent coronary angiography due to symptoms of angina or angina equivalents, the presence of obstructive CAD, the number of diseased vessels with ≥ 50% stenosis, and modified Gensini score were cross-sectionally evaluated; the level of mtDNA 8-OHdG was quantified by quantitative PCR. Then, 701 of 1920 diabetic patients who further received coronary revascularization completed 1-year prospective follow-up to document major adverse cardiovascular and cerebral events (MACCEs). In vitro experiments were also performed to observe the effects of mtDNA oxidative damage in high glucose-cultured human umbilical vein endothelial cells (HUVECs). Results Cross-sectionally, greater mtDNA 8-OHdG was associated with increased odds of obstructive CAD (odds ratio [OR] 1.38, 95% CI confidence interval 1.24–1.52), higher degree of coronary stenosis (number of diseased vessels: OR 1.29, 95% CI 1.19–1.41; modified Gensini scores: OR 1.28, 95% CI 1.18–1.39), and higher levels of C-reactive protein (β 0.18, 95% CI 0.06–0.31) after adjusting for confounders. Sensitivity analyses using propensity score matching yielded similar results. Stratification by smoking status showed that the association between mtDNA 8-OHdG and obstructive CAD was most evident in current smokers (Pinteration < 0.01). Prospectively, the adjusted hazards ratio per 1-SD increase in mtDNA 8-OHdG was 1.59 (95% CI 1.33–1.90) for predicting 1-year MACCEs after revascularization. In HUVECs, exposure to antimycin A, an inducer for mtDNA oxidative damage, led to adverse alterations in markers of mitochondrial and endothelia function. Conclusion Greater mtDNA 8-OHdG in leukocytes may serve as an independent risk factor for CAD in patients with T2DM.
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Affiliation(s)
- Xue-Bin Wang
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Jianshe East Road No. 1, Zhengzhou, 450000, Henan, China.
| | - Ning-Hua Cui
- Zhengzhou Key Laboratory of Children's Infection and Immunity, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, 450000, Henan, China
| | - Xia'nan Liu
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Jianshe East Road No. 1, Zhengzhou, 450000, Henan, China
| | - Xin Liu
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Jianshe East Road No. 1, Zhengzhou, 450000, Henan, China
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Decreased 8-oxoguanine DNA glycosylase 1 (hOGG1) expression and DNA oxidation damage induced by Cr (VI). Chem Biol Interact 2019; 299:44-51. [DOI: 10.1016/j.cbi.2018.11.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 10/27/2018] [Accepted: 11/25/2018] [Indexed: 12/23/2022]
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8
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Lee WC, Lin CS, Ko FC, Cheng W, Lee MH, Wei YH. Low mitochondrial DNA copy number of resected cecum appendix correlates with high severity of acute appendicitis. J Formos Med Assoc 2018; 118:406-413. [PMID: 30100165 DOI: 10.1016/j.jfma.2018.07.017] [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: 02/03/2018] [Revised: 05/05/2018] [Accepted: 07/20/2018] [Indexed: 10/28/2022] Open
Abstract
BACKGROUND/PURPOSE The roles of mitochondrial DNA alterations in acute appendicitis (AA) remain unclear. We evaluated the alterations of mtDNA copy number and mtDNA integrity [proportion of mtDNA templates without 8-hydroxyl-2'-deoxyguanosine (8-OHdG)] of the resected cecum appendixes in clinically suspected acute appendicitis (CSAA). METHODS A total of 228 CSAA patients, including 50 harbored negative AA (NAA), 155 true AA (TAA) without rupture and 23 TAA with rupture, who underwent appendectomies were enrolled. Tissues of resected cecum appendixes from the paraffin-embedded pathological blocks were subjected to DNA extraction, and their mtDNA copy number and mtDNA integrity were determined by quantitative real-time polymerase chain reaction (Q-PCR). RESULTS During the progression of disease severity from NAA to TAA without rupture and further TAA with rupture, increases of white blood cell (WBC) counts (p = 0.001), positive bacterial culture rates in turbid ascites (p = 0.016) and area (p < 0.001)/or volume (p < 0.001) indices of resected cecum appendixes were noted among CSAA patients. On the contrary, decrease of mtDNA copy number (p = 0.003) was observed during disease progression of CSAA patients, especially in female patients (p = 0.007). Furthermore, lower mtDNA copy numbers were correlated with higher WBC counts (p = 0.001) and larger area (p = 0.003) or volume (p < 0.001) indices of the resected cecum appendixes. However, such an alteration was not observed in mtDNA integrity of resected cecum appendixes. CONCLUSION We conclude that a low mtDNA copy number of the resected cecum appendix may reflect high severity of acute appendicitis.
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Affiliation(s)
- Wei-Cheng Lee
- Division of Gastroenterology, Department of Internal Medicine, Yonghe Cardinal Tien Hospital, New Taipei City, Taiwan
| | - Chen-Sung Lin
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Biochemistry and Molecular Biology, School of Life Sciences, National Yang-Ming University, Taipei, Taiwan; Division of Thoracic Surgery, Taipei Hospital, Ministry of Health and Welfare, New Taipei City, Taiwan
| | - Fang-Chu Ko
- Department of Surgery, Keelung Hospital, Ministry of Health and Welfare, Keelung City, Taiwan
| | - Wei Cheng
- Department of Pathology, Keelung Hospital, Ministry of Health and Welfare, Keelung City, Taiwan
| | - Mau-Hwa Lee
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Gastroenterology, Keelung Hospital, Ministry of Health and Welfare, Keelung City, Taiwan; Good Liver Foundation and Clinic, Taipei, Taiwan.
| | - Yau-Huei Wei
- Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Biochemistry and Molecular Biology, School of Life Sciences, National Yang-Ming University, Taipei, Taiwan; Department of Medicine, Mackay Medical College, New Taipei City, Taiwan; Center for Mitochondrial Medicine and Free Radical Research, Changhua Christian Hospital, Changhua, Taiwan.
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Kresovich JK, Joyce BT, Gao T, Zheng Y, Zhang Z, Achenbach CJ, Murphy RL, Just AC, Shen J, Yang H, Vokonas P, Schwartz J, Baccarelli AA, Hou L. Promoter methylation of PGC1A and PGC1B predicts cancer incidence in a veteran cohort. Epigenomics 2018; 10:733-743. [PMID: 29888964 DOI: 10.2217/epi-2017-0141] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
AIM Previous studies suggest telomere shortening represses PGC1A and PGC1B expression leading to mitochondrial dysfunction. Methylation of CpG sites within these genes may interact with these factors to affect cancer risk. MATERIALS & METHODS Among 385 men, we identified 84 incidents of cancers (predominantly prostate and nonmelanoma skin). We examined associations between leukocyte DNA methylation of 41 CpGs from PGC1A and PGC1B with telomere length, mitochondrial 8-OHdG lesions, mitochondrial abundance and cancer incidence. RESULTS Methylation of five and eight CpG sites were significantly associated with telomere length and mitochondrial abundance at p < 0.05. Two CpG sites were independently associated with cancer risk: cg27514608 (PGC1A, TSS1500; HR: 1.55, 95% CI: 1.19-2.03, FDR = 0.02), and cg15219393 (PGC1B, first exon/5'UTR; HR: 3.71, 95% CI: 1.82-7.58, FDR < 0.01). Associations with cg15219393 were observed primarily among men with shorter leukocyte telomeres. CONCLUSION PGC1A and PGC1B methylation may serve as early biomarkers of cancer risk.
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Affiliation(s)
- Jacob K Kresovich
- Center for Population Epigenetics, Robert H Lurie Comprehensive Cancer Center & Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.,Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Brian T Joyce
- Center for Population Epigenetics, Robert H Lurie Comprehensive Cancer Center & Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.,Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Tao Gao
- Center for Population Epigenetics, Robert H Lurie Comprehensive Cancer Center & Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Yinan Zheng
- Center for Population Epigenetics, Robert H Lurie Comprehensive Cancer Center & Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Zhou Zhang
- Center for Population Epigenetics, Robert H Lurie Comprehensive Cancer Center & Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Christopher J Achenbach
- Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.,Center for Global Health, Institute for Public Health & Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Robert L Murphy
- Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.,Center for Global Health, Institute for Public Health & Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Allan C Just
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jincheng Shen
- Department of Population Health Sciences, University of Utah School of Medicine, Salt Lake City, UT 84108, USA
| | - Hushan Yang
- Division of Population Science, Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Pantel Vokonas
- VA Normative Aging Study, Veterans Affairs Boston Healthcare System & the Department of Medicine, Boston University School of Medicine, Boston, MA 02118, USA
| | - Joel Schwartz
- Department of Environmental Health, Harvard TH Chan School of Public Health, Harvard University, Boston, MA 02115, USA
| | - Andrea A Baccarelli
- Departments of Epidemiology & Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
| | - Lifang Hou
- Center for Population Epigenetics, Robert H Lurie Comprehensive Cancer Center & Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.,Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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Associations of Annual Ambient Fine Particulate Matter Mass and Components with Mitochondrial DNA Abundance. Epidemiology 2018; 28:763-770. [PMID: 28953603 DOI: 10.1097/ede.0000000000000717] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Fine particulate matter (PM2.5) represents a mixture of components with potentially different toxicities. However, little is known about the relative effects of PM2.5 mass and PM2.5 components on mitochondrial DNA (mtDNA) abundance, which may lie on the pathway of PM2.5-associated disease. METHODS We studied 646 elderly male participants in the Normative Aging Study from Greater Boston to investigate associations of long-term exposure to PM2.5 mass and PM2.5 components with mtDNA abundance. We estimated concentrations of pollutants for the 365-day preceding examination at each participant's address using spatial- and temporal-resolved chemical transport models. We measured blood mtDNA abundance using RT-PCR. We applied a shrinkage and selection method (adaptive LASSO) to identify components most predictive of mtDNA abundance, and fit multipollutant linear mixed-effects models with subject-specific intercept to estimate the relative effects of individual PM component. RESULTS MtDNA abundance was negatively associated with PM2.5 mass in the previous year and-after adjusting for PM2.5 mass-several PM2.5 components, including organic carbon, sulfate (marginally), and nitrate. In multipollutant models including as independent variables PM2.5 mass and PM2.5 components selected by LASSO, nitrate was associated with mtDNA abundance. An SD increase in annual PM2.5-associated nitrate was associated with a 0.12 SD (95% confidence intervals [CI] = -0.18, -0.07) decrease in mtDNA abundance. Analyses restricted to PM2.5 annual concentration below the current 1-year U.S. Environmental Protection Agency standard produced similar results. CONCLUSIONS Long-term exposures to PM2.5-associated nitrate were related to decreased mtDNA abundance independent of PM2.5 mass. Mass alone may not fully capture the potential of PM2.5 to oxidize the mitochondrial genome.See video abstract at, http://links.lww.com/EDE/B274.
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Lee HT, Lin CS, Pan SC, Wu TH, Lee CS, Chang DM, Tsai CY, Wei YH. Alterations of oxygen consumption and extracellular acidification rates by glutamine in PBMCs of SLE patients. Mitochondrion 2018; 44:65-74. [PMID: 29337141 DOI: 10.1016/j.mito.2018.01.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 12/31/2017] [Accepted: 01/10/2018] [Indexed: 02/05/2023]
Abstract
We evaluated plasma glutamine levels and basal mitochondrial oxygen consumption rate (mOCRB) and basal extracellular acidification rate (ECARB) of peripheral blood mononuclear cells (PBMCs) of systemic lupus erythematous (SLE) patients and healthy controls (HCs). Lower plasma glutamine levels correlated with higher SLE disease activity indexes (p=0.025). Incubated in DMEM containing 100mg/dL glucose, SLE-PBMCs displayed lower mOCRB (p=0.018) but similar ECARB (p=0.467) to those of HC-PBMCs, and their mOCRB got elevated (p<0.001) without altering ECARB (p=0.239) by supplementation with 2 or 4mM glutamine. We conclude that impaired mitochondrial respiration of SLE-PBMCs could be improved by glutamine under euglycemic condition.
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Affiliation(s)
- Hui-Ting Lee
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Department of Medicine, Mackay Medical College, New Taipei City, Taiwan; Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei, Taiwan
| | - Chen-Sung Lin
- Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan; Division of Thoracic Surgery, Taipei Hospital, Ministry of Health and Welfare, New Taipei City, Taiwan
| | - Siao-Cian Pan
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan; Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei, Taiwan; Center for Mitochondrial Medicine and Free Radical Research, Changhua Christian Hospital, Changhua City, Taiwan
| | - Tsai-Hung Wu
- Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Nephrology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chyou-Shen Lee
- Mackay Junior College of Medicine, Nursing and Management, New Taipei City, Taiwan; Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei, Taiwan
| | - Deh-Ming Chang
- Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Allergy, Immunology and Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chang-Youh Tsai
- Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Allergy, Immunology and Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan.
| | - Yau-Huei Wei
- Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan; Department of Medicine, Mackay Medical College, New Taipei City, Taiwan; Center for Mitochondrial Medicine and Free Radical Research, Changhua Christian Hospital, Changhua City, Taiwan.
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12
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Okada E, Nakamura K, Ukawa S, Sakata K, Date C, Iso H, Tamakoshi A. Dietary Patterns and Risk of Esophageal Cancer Mortality: The Japan Collaborative Cohort Study. Nutr Cancer 2016; 68:1001-9. [PMID: 27366932 DOI: 10.1080/01635581.2016.1192202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Several case-control studies have associated dietary patterns with esophageal cancer (EC) risk, but prospective studies are scarce. We investigated dietary pattern and EC mortality risk associations by smoking status. Participants were 26,562 40- to 79-yr-old Japanese men, who enrolled in the Japan Collaborative Cohort Study between 1988 and 1990. Hazard ratios (HRs) and 95% confidence intervals (CIs) for EC mortality in nonsmokers and smokers were estimated using Cox proportional models. During follow-up (1988-2009), 132 participants died of EC. Using a baseline food frequency questionnaire and factor analysis, vegetable, animal, and dairy product food patterns were identified. EC risk decreased significantly with a higher factor score for the dairy product pattern (Ptrend = 0.042) and was more pronounced in smokers [multivariable HR (4th vs. 1st quartiles) = 0.57, 95% CI: 0.30, 1.09; Ptrend = 0.021]. Neither vegetable nor animal food patterns were significant overall; however, EC risk increased with a higher factor score for the animal food pattern in nonsmokers [multivariable HR (4th vs. 1st quartiles) = 6.01, 95% CI: 1.17, 30.88; Ptrend = 0.021], although the small number of events was a limitation. Our findings suggest a dairy product pattern may reduce EC risk in Japanese men, especially smokers.
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Affiliation(s)
- Emiko Okada
- a Department of Public Health , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - Koshi Nakamura
- a Department of Public Health , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - Shigekazu Ukawa
- a Department of Public Health , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - Kiyomi Sakata
- b Department of Hygiene and Preventive Medicine , Iwate Medical University , Yahaba , Japan
| | - Chigusa Date
- c Department of Food Science and Nutrition , School of Human Science and Environment, University of Hyogo , Himeji , Japan
| | - Hiroyasu Iso
- d Public Health, Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University , Osaka , Japan
| | - Akiko Tamakoshi
- a Department of Public Health , Hokkaido University Graduate School of Medicine , Sapporo , Japan
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13
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Role of Mitochondrial DNA Copy Number Alteration in Human Renal Cell Carcinoma. Int J Mol Sci 2016; 17:ijms17060814. [PMID: 27231905 PMCID: PMC4926348 DOI: 10.3390/ijms17060814] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 05/09/2016] [Accepted: 05/10/2016] [Indexed: 12/19/2022] Open
Abstract
We investigated the role of mitochondrial DNA (mtDNA) copy number alteration in human renal cell carcinoma (RCC). The mtDNA copy numbers of paired cancer and non-cancer parts from five resected RCC kidneys after radical nephrectomy were determined by quantitative polymerase chain reaction (Q-PCR). An RCC cell line, 786-O, was infected by lentiviral particles to knock down mitochondrial transcriptional factor A (TFAM). Null target (NT) and TFAM-knockdown (TFAM-KD) represented the control and knockdown 786-O clones, respectively. Protein or mRNA expression levels of TFAM; mtDNA-encoded NADH dehydrogenase subunit 1 (ND1), ND6 and cytochrome c oxidase subunit 2 (COX-2); nuclear DNA (nDNA)-encoded succinate dehydrogenase subunit A (SDHA); v-akt murine thymoma viral oncogene homolog 1 gene (AKT)-encoded AKT and v-myc myelocytomatosis viral oncogene homolog gene (c-MYC)-encoded MYC; glycolytic enzymes including hexokinase II (HK-II), glucose 6-phosphate isomerase (GPI), phosphofructokinase (PFK), and lactate dehydrogenase subunit A (LDHA); and hypoxia-inducible factors the HIF-1α and HIF-2α, pyruvate dehydrogenase kinase 1 (PDK1), and pyruvate dehydrogenase E1 component α subunit (PDHA1) were analyzed by Western blot or Q-PCR. Bioenergetic parameters of cellular metabolism, basal mitochondrial oxygen consumption rate (mOCRB) and basal extracellular acidification rate (ECARB), were measured by a Seahorse XFe-24 analyzer. Cell invasiveness was evaluated by a trans-well migration assay and vimentin expression. Doxorubicin was used as a chemotherapeutic agent. The results showed a decrease of mtDNA copy numbers in resected RCC tissues (p = 0.043). The TFAM-KD clone expressed lower mtDNA copy number (p = 0.034), lower mRNA levels of TFAM (p = 0.008), ND1 (p = 0.007), and ND6 (p = 0.017), and lower protein levels of TFAM and COX-2 than did the NT clone. By contrast, the protein levels of HIF-2α, HK-II, PFK, LDHA, AKT, MYC and vimentin; trans-well migration activity (p = 0.007); and drug resistance to doxorubicin (p = 0.008) of the TFAM-KD clone were significantly higher than those of the NT clone. Bioenergetically, the TFAM-KD clone expressed lower mOCRB (p = 0.009) but higher ECARB (p = 0.037) than did the NT clone. We conclude that a reduction of mtDNA copy number and decrease of respiratory function of mitochondria in RCC might be compensated for by an increase of enzymes and factors that are involved in the upregulation of glycolysis to confer RCC more invasive and a drug-resistant phenotype in vitro.
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14
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Zhong J, Cayir A, Trevisi L, Sanchez-Guerra M, Lin X, Peng C, Bind MA, Prada D, Laue H, Brennan KJM, Dereix A, Sparrow D, Vokonas P, Schwartz J, Baccarelli AA. Traffic-Related Air Pollution, Blood Pressure, and Adaptive Response of Mitochondrial Abundance. Circulation 2015; 133:378-87. [PMID: 26660284 DOI: 10.1161/circulationaha.115.018802] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 12/01/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND Exposure to black carbon (BC), a tracer of vehicular-traffic pollution, is associated with increased blood pressure (BP). Identifying biological factors that attenuate BC effects on BP can inform prevention. We evaluated the role of mitochondrial abundance, an adaptive mechanism compensating for cellular-redox imbalance, in the BC-BP relationship. METHODS AND RESULTS At ≥ 1 visits among 675 older men from the Normative Aging Study (observations=1252), we assessed daily BP and ambient BC levels from a stationary monitor. To determine blood mitochondrial abundance, we used whole blood to analyze mitochondrial-to-nuclear DNA ratio (mtDNA/nDNA) using quantitative polymerase chain reaction. Every standard deviation increase in the 28-day BC moving average was associated with 1.97 mm Hg (95% confidence interval [CI], 1.23-2.72; P<0.0001) and 3.46 mm Hg (95% CI, 2.06-4.87; P<0.0001) higher diastolic and systolic BP, respectively. Positive BC-BP associations existed throughout all time windows. BC moving averages (5-day to 28-day) were associated with increased mtDNA/nDNA; every standard deviation increase in 28-day BC moving average was associated with 0.12 standard deviation (95% CI, 0.03-0.20; P=0.007) higher mtDNA/nDNA. High mtDNA/nDNA significantly attenuated the BC-systolic BP association throughout all time windows. The estimated effect of 28-day BC moving average on systolic BP was 1.95-fold larger for individuals at the lowest mtDNA/nDNA quartile midpoint (4.68 mm Hg; 95% CI, 3.03-6.33; P<0.0001), in comparison with the top quartile midpoint (2.40 mm Hg; 95% CI, 0.81-3.99; P=0.003). CONCLUSIONS In older adults, short-term to moderate-term ambient BC levels were associated with increased BP and blood mitochondrial abundance. Our findings indicate that increased blood mitochondrial abundance is a compensatory response and attenuates the cardiac effects of BC.
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Affiliation(s)
- Jia Zhong
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Akin Cayir
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Letizia Trevisi
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Marco Sanchez-Guerra
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Xinyi Lin
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Cheng Peng
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Marie-Abèle Bind
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Diddier Prada
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Hannah Laue
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Kasey J M Brennan
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Alexandra Dereix
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - David Sparrow
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Pantel Vokonas
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Joel Schwartz
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.)
| | - Andrea A Baccarelli
- From Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA (J.Z., A.C., L.T., M.S.-G., C.P., M.-A.B., D.P., H.L., K.J.M.B., A.D., J.S., A.A.B.); Vocational Health College, Canakkale Onsekiz Mart University, Çanakkale, Turkey (A.C.); Singapore Institute for Clinical Sciences, Singapore (X.L.); Department of Statistics, Harvard University, Cambridge, MA (M.-A.B.); Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, Mexico City, Mexico (D.P.); and VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, MA (D.S., P.V.).
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15
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Wrede JE, Mengel-From J, Buchwald D, Vitiello MV, Bamshad M, Noonan C, Christiansen L, Christensen K, Watson NF. Mitochondrial DNA Copy Number in Sleep Duration Discordant Monozygotic Twins. Sleep 2015; 38:1655-8. [PMID: 26039967 DOI: 10.5665/sleep.5068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 04/04/2015] [Indexed: 11/03/2022] Open
Abstract
STUDY OBJECTIVES Mitochondrial DNA (mtDNA) copy number is an important component of mitochondrial function and varies with age, disease, and environmental factors. We aimed to determine whether mtDNA copy number varies with habitual differences in sleep duration within pairs of monozygotic twins. SETTING Academic clinical research center. PARTICIPANTS 15 sleep duration discordant monozygotic twin pairs (30 twins, 80% female; mean age 42.1 years [SD 15.0]). DESIGN Sleep duration was phenotyped with wrist actigraphy. Each twin pair included a "normal" (7-9 h/24) and "short" (< 7 h/24) sleeping twin. Fasting peripheral blood leukocyte DNA was assessed for mtDNA copy number via the n-fold difference between qPCR measured mtDNA and nuclear DNA creating an mtDNA measure without absolute units. We used generalized estimating equation linear regression models accounting for the correlated data structure to assess within-pair effects of sleep duration on mtDNA copy number. MEASUREMENTS AND RESULTS Mean within-pair sleep duration difference per 24 hours was 94.3 minutes (SD 62.6 min). We found reduced sleep duration (β = 0.06; 95% CI 0.004, 0.12; P < 0.05) and sleep efficiency (β = 0.51; 95% CI 0.06, 0.95; P < 0.05) were significantly associated with reduced mtDNA copy number within twin pairs. Thus every 1-minute decrease in actigraphy-defined sleep duration was associated with a decrease in mtDNA copy number of 0.06. Likewise, a 1% decrease in actigraphy-defined sleep efficiency was associated with a decrease in mtDNA copy number of 0.51. CONCLUSIONS Reduced sleep duration and sleep efficiency were associated with reduced mitochondrial DNA copy number in sleep duration discordant monozygotic twins offering a potential mechanism whereby short sleep impairs health and longevity through mitochondrial stress.
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Affiliation(s)
- Joanna E Wrede
- Department of Neurology, University of Washington, Seattle, WA.,Department of Pediatrics, University of Washington, Seattle, WA
| | - Jonas Mengel-From
- The Danish Aging Research Center and The Danish Twin Registry, Epidemiology Unit, Institute of Public Health, University of Southern Denmark, Odense, Denmark.,Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | - Dedra Buchwald
- Departments of Epidemiology and Medicine, University of Washington, Seattle, WA.,University of Washington Twin Registry, Seattle, WA
| | - Michael V Vitiello
- Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA.,Center for Research on the Management of Sleep Disturbances, University of Washington, Seattle, WA
| | - Michael Bamshad
- Department of Pediatrics, University of Washington, Seattle, WA
| | - Carolyn Noonan
- Departments of Epidemiology and Medicine, University of Washington, Seattle, WA.,University of Washington Twin Registry, Seattle, WA
| | - Lene Christiansen
- The Danish Aging Research Center and The Danish Twin Registry, Epidemiology Unit, Institute of Public Health, University of Southern Denmark, Odense, Denmark
| | - Kaare Christensen
- The Danish Aging Research Center and The Danish Twin Registry, Epidemiology Unit, Institute of Public Health, University of Southern Denmark, Odense, Denmark.,Department of Clinical Genetics, Odense University Hospital, Odense, Denmark.,Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Nathaniel F Watson
- Department of Neurology, University of Washington, Seattle, WA.,University of Washington Twin Registry, Seattle, WA.,Center for Research on the Management of Sleep Disturbances, University of Washington, Seattle, WA
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16
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Lin CS, Chang SC, Ou LH, Chen CM, Hsieh SSW, Chung YP, King KL, Lin SL, Wei YH. Mitochondrial DNA alterations correlate with the pathological status and the immunological ER, PR, HER-2/neu, p53 and Ki-67 expression in breast invasive ductal carcinoma. Oncol Rep 2015; 33:2924-34. [PMID: 25845386 DOI: 10.3892/or.2015.3887] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 02/19/2015] [Indexed: 11/05/2022] Open
Abstract
We analyzed the changes in mitochondrial DNA (mtDNA) copy numbers and the shifting of mtDNA D310 sequence variations (D310 mutation) with their relationships to pathological status and the expression levels of estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor-2 (HER-2/neu), tumor-suppressor protein p53 and cellular proliferation protein Ki-67 in breast invasive ductal carcinoma (BIDC), respectively. Fifty-one paraffin-embedded BIDCs and their paired non-cancerous breast tissues were dissected for DNA extraction. The mtDNA copy number and mtDNA D310 sequence variations were determined by quantitative real-time polymerase chain reaction (q-PCR) and PCR-based direct sequencing, respectively. The expression levels of ER, PR, HER-2/neu, p53 and Ki-67 were determined by immunohistochemical (IHC) staining. Compared to the paired non-cancerous breast tissues, 24 (47.1%) BIDCs had elevated mtDNA copy numbers and 29 (56.9%) harbored mtDNA D310 mutations. Advanced T-status (p=0.056), negative-ER (p=0.005), negative-PR (p=0.007), positive-p53 (p=0.050) and higher Ki-67 (p=0.004) expressions were related to a higher mtDNA copy ratio. In addition, advanced T-status (p=0.019) and negative-HER-2/neu expression (p=0.061) were associated with mtDNA D310 mutations. In conclusion, higher mtDNA copy ratio and D310 mutations may be relevant biomarkers correlated with pathological T-status and the expression levels of ER, PR, HER-2/neu, p53 and Ki-67 in BIDCs.
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Affiliation(s)
- Chen-Sung Lin
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan, R.O.C
| | - Shi-Chuan Chang
- Institute of Emergency and Critical Care Medicine, National Yang-Ming University, Taipei 112, Taiwan, R.O.C
| | - Liang-Hung Ou
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan, R.O.C
| | - Chien-Ming Chen
- Division of Hematology and Oncology, Department of Internal Medicine, Taipei Hospital, Ministry of Health and Welfare, New Taipei City 242, Taiwan, R.O.C
| | - Sophie Swen-Wan Hsieh
- Department of Pathology, Taipei Hospital, Ministry of Health and Welfare, New Taipei City 242, Taiwan, R.O.C
| | - Yu-Ping Chung
- Department of Pathology, Taipei Hospital, Ministry of Health and Welfare, New Taipei City 242, Taiwan, R.O.C
| | - Kuang-Liang King
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan, R.O.C
| | - Shoei-Loong Lin
- Chon-inn Hospital, Chon-inn Healthcare Corp. Aggregate, New Taipei City 220, Taiwan, R.O.C
| | - Yau-Huei Wei
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan, R.O.C
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17
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Lee HT, Lin CS, Lee CS, Tsai CY, Wei YH. The role of hOGG1 C1245G polymorphism in the susceptibility to lupus nephritis and modulation of the plasma 8-OHdG in patients with systemic lupus erythematosus. Int J Mol Sci 2015; 16:3757-68. [PMID: 25671815 PMCID: PMC4346924 DOI: 10.3390/ijms16023757] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 01/29/2015] [Indexed: 01/08/2023] Open
Abstract
We investigated whether the C1245G polymorphism of human 8-oxoguanine glycosylase 1 (hOGG1) gene confers the susceptibility to systemic lupus erythematosus (SLE) occurrence of lupus nephritis and affects the plasma level of 8-hydroxy-2'-deoxyguanosine (8-OHdG) in patients with SLE. A total of 45 healthy controls and 85 SLE patients were recruited. The C1245G polymorphism of the hOGG1 gene was determined by direct sequencing. The frequency of occurrence of the hOGG1 1245 GG genotype in SLE patients was 31.8% (27/85), which is lower than that of healthy controls of 53.3% (24/45). Thirty-three (33/85, 38.8%) SLE patients developed lupus nephritis. Significantly, SLE patients harboring the hOGG1 1245 GG genotype had a higher incidence to develop lupus nephritis than did those harboring the hOGG1 1245 CC or CG genotype (15/27, 55.6% vs.18/58, 31.0%, p = 0.031). Divided into subgroups, SLE patients harboring the hOGG1 1245 GG genotype had the highest plasma levels of 8-OHdG among patients with all genotypes, with regard to the coexistence of lupus nephritis (p = 0.020, ANOVA), including those with nephritis harboring the hOGG1 1245 CC or CG genotypes (p = 0.037), those without nephritis harboring the hOGG1 1245 GG genotype (p = 0.050), and those without nephritis harboring the hOGG1 1245 CC or CG genotype (p = 0.054). We conclude that the C1245G polymorphism of hOGG1 may be one of the factors that confer the susceptibility to lupus nephritis and modulate the plasma level of 8-OHdG in patients with SLE.
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Affiliation(s)
- Hui-Ting Lee
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan.
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei 104, Taiwan.
| | - Chen-Sung Lin
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Division of Thoracic Surgery, Taipei Hospital, Ministry of Health and Welfare, New Taipei City 242, Taiwan.
| | - Chyou-Shen Lee
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan.
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei 104, Taiwan.
- Mackay Junior College of Medicine, Nursing, and Management, New Taipei City 252, Taiwan.
| | - Chang-Youh Tsai
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei 112, Taiwan.
| | - Yau-Huei Wei
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Faculty of Medicine, National Yang-Ming University, Taipei 112, Taiwan.
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan.
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan.
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A systematic review and meta-analysis of the association between OGG1 Ser326Cys polymorphism and cancers. Med Oncol 2015; 32:472. [DOI: 10.1007/s12032-014-0472-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 12/18/2014] [Indexed: 12/26/2022]
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