201
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Huang H, Wang Q, He X, Wu Y, Xu C. Association between polyfluoroalkyl chemical concentrations and leucocyte telomere length in US adults. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 653:547-553. [PMID: 30414584 DOI: 10.1016/j.scitotenv.2018.10.400] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/29/2018] [Accepted: 10/29/2018] [Indexed: 05/22/2023]
Abstract
Exposure to some environmental chemicals is reportedly associated with the leucocyte telomere length (LTL), but the effects of the non-occupational exposure to polyfluoroalkyl chemical (PFCs) on the LTL are not well understood. Using data from 773 participants in the National Health and Nutrition Examination Survey (NHANES) conducted in 1999-2000, we analysed the association between blood PFC concentrations and LTL. Coefficients (betas) and 95% confidence intervals (CIs) for the blood PFC concentrations in association with the LTL were estimated using multivariate linear regression models after adjustment for age, gender, race, body mass index (BMI), poverty income ratio, educational level, white blood cell count, C-reactive protein and other PFCs. The results identified a strong positive association between the blood perfluorooctane sulfonic acid (PFOS) concentration and LTL in adults, and no associations were found between the LTL and other PFCs. In the linear regression models, each increment of one standard deviation (SD) in the base-10-logarithm-transformed PFOS concentration was associated with a 21-bp increase in the LTL in the fully adjusted model (P = 0.033). Moreover, serum PFOS was associated with the LTL mainly in females and individuals aged 40-50, as demonstrated by stratified analyses. These results provide epidemiological evidence showing that environment-related levels of serum PFOS are positively associated with the LTL in adults.
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Affiliation(s)
- Haobin Huang
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Qinxue Wang
- Department of Geriatric Intensive Care Unit, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
| | - Xiaowei He
- Department of Endocrinology, Geriatric Hospital of Nanjing Medical University, Jiangsu Province Geriatric Institute, Jiangsu Province Official Hospital, Nanjing 210024, Jiangsu Province, China
| | - Yanhu Wu
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China.
| | - Cheng Xu
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, Nanjing 210008, Jiangsu Province, China.
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202
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De Rango F, Crocco P, Iannone F, Saiardi A, Passarino G, Dato S, Rose G. Inositol Polyphosphate Multikinase ( IPMK), a Gene Coding for a Potential Moonlighting Protein, Contributes to Human Female Longevity. Genes (Basel) 2019; 10:genes10020125. [PMID: 30744060 PMCID: PMC6410091 DOI: 10.3390/genes10020125] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/04/2019] [Accepted: 02/04/2019] [Indexed: 01/03/2023] Open
Abstract
Biogerontological research highlighted a complex and dynamic connection between aging, health and longevity, partially determined by genetic factors. Multifunctional proteins with moonlighting features, by integrating different cellular activities in the space and time, may explain part of this complexity. Inositol Polyphosphate Multikinase (IPMK) is a potential moonlighting protein performing multiple unrelated functions. Initially identified as a key enzyme for inositol phosphates synthesis, small messengers regulating many aspects of cell physiology, IPMK is now implicated in a number of metabolic pathways affecting the aging process. IPMK regulates basic transcription, telomere homeostasis, nutrient-sensing, metabolism and oxidative stress. Here, we tested the hypothesis that the genetic variability of IPMK may affect human longevity. Single-SNP (single nuclear polymorphism), haplotype-based association tests as well as survival analysis pointed to the relevance of six out of fourteen genotyped SNPs for female longevity. In particular, haplotype analysis refined the association highlighting two SNPs, rs2790234 and rs6481383, as major contributing variants for longevity in women. Our work, the first to investigate the association between variants of IPMK and longevity, supports IPMK as a novel gender-specific genetic determinant of human longevity, playing a role in the complex network of genetic factors involved in human survival.
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Affiliation(s)
- Francesco De Rango
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Rende, Italy.
| | - Paolina Crocco
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Rende, Italy.
| | - Francesca Iannone
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Rende, Italy.
| | - Adolfo Saiardi
- MRC Laboratory for Molecular Cell Biology, University College London, London, UK.
| | - Giuseppe Passarino
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Rende, Italy.
| | - Serena Dato
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Rende, Italy.
| | - Giuseppina Rose
- Department of Biology, Ecology and Earth Sciences, University of Calabria, Rende, Italy.
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203
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Beatty Moody DL, Leibel DK, Darden TM, Ashe JJ, Waldstein SR, Katzel LI, Liu HB, Weng NP, Evans MK, Zonderman AB. Interpersonal-level discrimination indices, sociodemographic factors, and telomere length in African-Americans and Whites. Biol Psychol 2019; 141:1-9. [PMID: 30553820 PMCID: PMC6438165 DOI: 10.1016/j.biopsycho.2018.12.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 11/14/2018] [Accepted: 12/07/2018] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Studies have linked self-reported discrimination to telomere attrition, a biological marker of accelerated cellular aging. However, it is unknown whether intersections between social categories-race, socioeconomic status (SES), sex, and age-influence the association of varying forms of discrimination with telomere length. We examined these associations in a socioeconomically and racially/ethnically diverse urban sample. METHODS Cross-sectional data were from 341 middle-aged (30-64 years) African American and White, community participants in the Healthy Aging in Neighborhoods of Diversity across the Life Span Study (HANDLS). Multiple regression models examined up to 3-way interactions between a discrimination measure (i.e., everyday, racial, gender, lifetime burden, and frequency of discrimination across sources) and two social categories. RESULTS After adjusting for depressive symptoms, waist circumference, and lifetime substance use, two themes emerged: 1) among women with higher SES, a) greater lifetime discrimination burden (b = -0.23, p = .011), gender discrimination (b = -0.29, p = .040), and racial discrimination (b = -0.24, p = 0.023) and 2) among younger adults, irrespective of race and sex, greater frequency of discrimination across sources (b = 0.002, p = .008) was associated with shorter telomeres. CONCLUSIONS Irrespective of race, women with higher SES and younger adults reporting greater discrimination may be at particular risk for accelerated aging. Telomere attrition promotes and accelerates chronic health conditions for which there are health disparities. Future research explicating intersections among specific discrimination indices and social categories is warranted.
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Affiliation(s)
| | - Daniel K Leibel
- Department of Psychology, University of Maryland, Baltimore County, Baltimore, MD, USA
| | - Taylor M Darden
- Department of Psychology, University of Maryland, Baltimore County, Baltimore, MD, USA
| | - Jason J Ashe
- Department of Psychology, University of Maryland, Baltimore County, Baltimore, MD, USA
| | - Shari R Waldstein
- Department of Psychology, University of Maryland, Baltimore County, Baltimore, MD, USA; Division of Gerontology and Geriatric Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; Geriatric Research Education and Clinical Center, Veterans Affairs Medical Center, Baltimore, MD, USA
| | - Leslie I Katzel
- Division of Gerontology and Geriatric Medicine, University of Maryland School of Medicine, Baltimore, MD, USA; Geriatric Research Education and Clinical Center, Veterans Affairs Medical Center, Baltimore, MD, USA
| | - Hans B Liu
- Department of Biochemistry and Molecular Biology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA
| | - Nan-Ping Weng
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, Baltimore, MD, USA
| | - Michele K Evans
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, Baltimore, MD, USA
| | - Alan B Zonderman
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, Baltimore, MD, USA
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204
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Risques RA, Promislow DEL. All's well that ends well: why large species have short telomeres. Philos Trans R Soc Lond B Biol Sci 2019; 373:rstb.2016.0448. [PMID: 29335372 DOI: 10.1098/rstb.2016.0448] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2017] [Indexed: 12/11/2022] Open
Abstract
Among mammal species, almost all life-history traits are strongly size dependent. This size dependence even occurs at a molecular level. For example, both telomere length and telomerase expression show a size-dependent threshold. With some exceptions, species smaller than approximately 2 kg express telomerase, while species larger than that do not. Among species greater than approximately 5 kg, telomeres tend to be short-less than 25 kb-while among smaller species, some species have short and some have long telomeres. Here, we present a model to explore the role of body size-dependent trade-offs in shaping this threshold. We assume that selection favours short telomeres as a mechanism to protect against cancer. At the same time, selection favours long telomeres as a protective mechanism against DNA damage and replicative senescence. The relative importance of these two selective forces will depend on underlying intrinsic mortality and risk of cancer, both of which are size-dependent. Results from this model suggest that a cost-benefit model for the evolution of telomere length could explain phylogenetic patterns observed within the Class Mammalia. In addition, the model suggests a general conceptual framework to think about the role that body size plays in the evolution of tumour suppressor mechanisms.This article is part of the theme issue 'Understanding diversity in telomere dynamics'.
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Affiliation(s)
- Rosa Ana Risques
- Department of Pathology, University of Washington, Seattle, WA 98195, USA
| | - Daniel E L Promislow
- Department of Pathology, University of Washington, Seattle, WA 98195, USA.,Department of Biology, University of Washington, Seattle, WA 98195, USA
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205
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Aviv A, Shay JW. Reflections on telomere dynamics and ageing-related diseases in humans. Philos Trans R Soc Lond B Biol Sci 2019; 373:rstb.2016.0436. [PMID: 29335375 PMCID: PMC5784057 DOI: 10.1098/rstb.2016.0436] [Citation(s) in RCA: 106] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2017] [Indexed: 12/24/2022] Open
Abstract
Epidemiological studies have principally relied on measurements of telomere length (TL) in leucocytes, which reflects TL in other somatic cells. Leucocyte TL (LTL) displays vast variation across individuals—a phenomenon already observed in newborns. It is highly heritable, longer in females than males and in individuals of African ancestry than European ancestry. LTL is also longer in offspring conceived by older men. The traditional view regards LTL as a passive biomarker of human ageing. However, new evidence suggests that a dynamic interplay between selective evolutionary forces and TL might result in trade-offs for specific health outcomes. From a biological perspective, an active role of TL in ageing-related human diseases could occur because short telomeres increase the risk of a category of diseases related to restricted cell proliferation and tissue degeneration, including cardiovascular disease, whereas long telomeres increase the risk of another category of diseases related to increased proliferative growth, including major cancers. To understand the role of telomere biology in ageing-related diseases, it is essential to expand telomere research to newborns and children and seek further insight into the underlying causes of the variation in TL due to ancestry and geographical location. This article is part of the theme issue ‘Understanding diversity in telomere dynamics’.
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Affiliation(s)
- Abraham Aviv
- The Center of Human Development and Aging, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, NJ 07103, USA
| | - Jerry W Shay
- Department of Cell Biology, UT Southwestern Medical Center, Dallas, TX 75390, USA.,Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
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206
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Wilbourn RV, Moatt JP, Froy H, Walling CA, Nussey DH, Boonekamp JJ. The relationship between telomere length and mortality risk in non-model vertebrate systems: a meta-analysis. Philos Trans R Soc Lond B Biol Sci 2019; 373:rstb.2016.0447. [PMID: 29335371 PMCID: PMC5784067 DOI: 10.1098/rstb.2016.0447] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2017] [Indexed: 02/07/2023] Open
Abstract
Telomere length (TL) has become a biomarker of increasing interest within ecology and evolutionary biology, and has been found to predict subsequent survival in some recent avian studies but not others. Here, we undertake the first formal meta-analysis to test whether there is an overall association between TL and subsequent mortality risk in vertebrates other than humans and model laboratory rodents. We identified 27 suitable studies and obtained standardized estimates of the hazard ratio associated with TL from each. We performed a meta-analysis on these estimates and found an overall significant negative association implying that short telomeres are associated with increased mortality risk, which was robust to evident publication bias. While we found that heterogeneity in the hazard ratios was not explained by sex, follow-up period, maximum lifespan or the age group of the study animals, the TL–mortality risk association was stronger in studies using qPCR compared to terminal restriction fragment methodologies. Our results provide support for a consistent association between short telomeres and increased mortality risk in birds, but also highlight the need for more research into non-avian vertebrates and the reasons why different telomere measurement methods may yield different results. This article is part of the theme issue ‘Understanding diversity in telomere dynamics’.
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Affiliation(s)
- Rachael V Wilbourn
- Institute of Evolutionary Biology, University of Edinburgh, The King's Buildings, Ashworth Laboratories, Charlotte Auerbach Road, Edinburgh EH9 3FL, UK
| | - Joshua P Moatt
- Institute of Evolutionary Biology, University of Edinburgh, The King's Buildings, Ashworth Laboratories, Charlotte Auerbach Road, Edinburgh EH9 3FL, UK
| | - Hannah Froy
- Institute of Evolutionary Biology, University of Edinburgh, The King's Buildings, Ashworth Laboratories, Charlotte Auerbach Road, Edinburgh EH9 3FL, UK
| | - Craig A Walling
- Institute of Evolutionary Biology, University of Edinburgh, The King's Buildings, Ashworth Laboratories, Charlotte Auerbach Road, Edinburgh EH9 3FL, UK
| | - Daniel H Nussey
- Institute of Evolutionary Biology, University of Edinburgh, The King's Buildings, Ashworth Laboratories, Charlotte Auerbach Road, Edinburgh EH9 3FL, UK
| | - Jelle J Boonekamp
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, PO Box 72, 9700 AB Groningen, The Netherlands
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207
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Weber J, Jörres R, Kronseder A, Müller A, Weigl M, Chmelar C. Learning on the job, the use of selection, optimization, and compensation strategies, and their association with telomere length as an indicator of biological aging. Int Arch Occup Environ Health 2019; 92:361-370. [PMID: 30671630 DOI: 10.1007/s00420-019-01408-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 01/14/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE Due to the increased need for retention of older workforce caused by demographic changes in industrialized countries, support of healthy aging in occupational settings is of increasing relevance. This study examines the relationship between leucocyte telomere length (LTL), a potential biomarker for biological aging, and selection, optimization, and compensation (SOC) and learning opportunities as strategies involving efficient management and gain of resources at work. METHODS Within a cross-sectional study, blood samples were drawn from 141 geriatric care professionals to measure LTL by quantitative real-time polymerase-chain reaction. Furthermore, all participants were asked with standardized questionnaires to rate their learning opportunities at work and use of SOC strategies. Analyses were performed by multiple linear regressions. RESULTS SOC use, especially compensation, tended to be negatively, and learning opportunities tended to be positively associated with LTL. Furthermore, a significant interaction was found between optimization and learning opportunities, such that LTL and learning opportunities were only positively associated when optimization was high. CONCLUSIONS Resources at work were weakly associated with telomere length, which is not unexpected in view of the multiplicity of factors affecting LTL. The results further suggest that a mismatch between SOC and learning opportunities may negatively affect successful aging. They also suggest that more detailed research on biological aging and its relation to resources at work is needed.
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Affiliation(s)
- Jeannette Weber
- Institute of Occupational, Social and Environmental Medicine, Centre for Health and Society, Faculty of Medicine, Heinrich-Heine-University of Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - Rudolf Jörres
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Ludwig-Maximilians-University Munich, Ziemssenstr.1, 80336, Munich, Germany
| | - Angelika Kronseder
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Ludwig-Maximilians-University Munich, Ziemssenstr.1, 80336, Munich, Germany
| | - Andreas Müller
- Institute of Occupational, Social and Environmental Medicine, Centre for Health and Society, Faculty of Medicine, Heinrich-Heine-University of Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.,Work and Organizational Psychology, Faculty of Education, University Duisburg-Essen, Universitätsstr. 2, 45141, Essen, Germany
| | - Matthias Weigl
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Ludwig-Maximilians-University Munich, Ziemssenstr.1, 80336, Munich, Germany
| | - Caroline Chmelar
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Ludwig-Maximilians-University Munich, Ziemssenstr.1, 80336, Munich, Germany
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208
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Saghebjoo M, Sadeghi-Tabas S, Saffari I, Ghane A, Dimauro I. Sex Differences in antiaging response to short- and long-term high-intensity interval exercise in rat cardiac muscle: Telomerase activity, total antioxidant/oxidant status. CHINESE J PHYSIOL 2019; 62:261-266. [DOI: 10.4103/cjp.cjp_52_19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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209
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Møller P, Wils RS, Jensen DM, Andersen MHG, Roursgaard M. Telomere dynamics and cellular senescence: an emerging field in environmental and occupational toxicology. Crit Rev Toxicol 2018; 48:761-788. [DOI: 10.1080/10408444.2018.1538201] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | - Regitze Sølling Wils
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | - Ditte Marie Jensen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | | | - Martin Roursgaard
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
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210
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Wang Q, Zhan Y, Pedersen NL, Fang F, Hägg S. Telomere Length and All-Cause Mortality: A Meta-analysis. Ageing Res Rev 2018; 48:11-20. [PMID: 30254001 DOI: 10.1016/j.arr.2018.09.002] [Citation(s) in RCA: 184] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 08/09/2018] [Accepted: 09/10/2018] [Indexed: 01/06/2023]
Abstract
Telomere attrition is associated with increased morbidity and mortality of various age-related diseases. Reports of association between telomere length (TL) and all-cause mortality remain inconsistent. In the present study, a meta-analysis was performed using published cohort studies and un-published data from the Swedish Twin Registry (STR). Twenty-five studies were included: four STR cohorts (12,083 individuals with 2517 deaths) and 21 published studies. In the STR studies, one standard deviation (SD) decrement of leukocyte TL corresponded to 13% increased all-cause mortality risk (95% confidence interval [CI]: 7%-19%); individuals in the shortest TL quarter had 44% higher hazard (95% CI: 27%-63%) than those in the longest quarter. Meta-analysis of all eligible studies (121,749 individuals with 21,763 deaths) revealed one SD TL decrement-associated hazard ratio of 1.09 (95% CI: 1.06-1.13); those in the shortest TL quarter had 26% higher hazard (95% CI: 15%-38%) compared to the longest quarter, although between-study heterogeneity was observed. Analyses stratified by age indicated that the hazard ratio was smaller in individuals over 80 years old. In summary, short telomeres are associated with increased all-cause mortality risk in the general population. However, TL measurement techniques and age at measurement contribute to the heterogeneity of effect estimation.
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Affiliation(s)
- Qi Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Techology, Wuhan, 430030, China; Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Nobels väg 12A, Stockholm 17177, Sweden.
| | - Yiqiang Zhan
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Nobels väg 12A, Stockholm 17177, Sweden
| | - Nancy L Pedersen
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Nobels väg 12A, Stockholm 17177, Sweden
| | - Fang Fang
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Nobels väg 12A, Stockholm 17177, Sweden
| | - Sara Hägg
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Nobels väg 12A, Stockholm 17177, Sweden
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211
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Xavier G, Spindola LM, Ota VK, Carvalho CM, Maurya PK, Tempaku PF, Moretti PN, Mazotti DR, Sato JR, Brietzke E, Miguel EC, Grassi-Oliveira R, Mari J, Bressan RA, Gadelha A, Pan PM, Belangero SI. Effect of male-specific childhood trauma on telomere length. J Psychiatr Res 2018; 107:104-109. [PMID: 30384090 DOI: 10.1016/j.jpsychires.2018.10.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 09/10/2018] [Accepted: 10/18/2018] [Indexed: 10/28/2022]
Abstract
Child maltreatment (CM) is a global issue with serious lifelong consequences. In fact, maltreatment during childhood might be an important risk factor for the development of psychiatric disorders. Furthermore, previous studies showed a strong relationship between telomere length (TL) and early life stress. Considering that only a few studies have evaluated this relationship in children and that even fewer considered the sex as a possible moderator, we investigated whether TL in the blood of both children and adolescents was associated with psychopathology and with a history of CM, and whether these associations were moderated by the sex. In this cross-sectional study, 561 individuals (ranging between 6 and 14 years of age) from a large prospective community school-based study, i.e., the Brazilian High-Risk Cohort (HRC), were evaluated. The Child Behavior Checklist (CBCL) score was used to assess psychopathology, whereas a latent variable encompassing some questions about history of adverse environment and trauma was employed to determine the CM history. TL was measured in blood cells using a multiplex quantitative polymerase chain reaction. Additionally, TL was inserted in two moderation models, in which the CBCL score/CM, TL and sex were the independent variables, the outcome, and the moderator variable, respectively. Although an association between psychiatric symptoms and TL was not observed, a relation between CM and TL moderated by the sex was seen, indicating that males with higher CM scores presented with shorter telomeres than did females. Our results suggest that child maltreatment could influence telomere length in both children and adolescents and that this effect is mediated by the sex.
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Affiliation(s)
- Gabriela Xavier
- Genetics Division of Department of Morphology and Genetics of Universidade Federal de Sao Paulo (UNIFESP), Brazil; LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil
| | - Letícia M Spindola
- Genetics Division of Department of Morphology and Genetics of Universidade Federal de Sao Paulo (UNIFESP), Brazil; LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Vanessa K Ota
- Genetics Division of Department of Morphology and Genetics of Universidade Federal de Sao Paulo (UNIFESP), Brazil; LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil
| | - Carolina M Carvalho
- Genetics Division of Department of Morphology and Genetics of Universidade Federal de Sao Paulo (UNIFESP), Brazil; LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Pawan Kumar Maurya
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Biochemistry, Central University of Haryana, Mahendergarh, Haryana, India
| | | | - Patricia N Moretti
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Genetics and Morphology, Universidade de Brasília (UNB) Brasília, Brazil
| | - Diego R Mazotti
- Center for Sleep and Circadian Neurobiology, University of Pennsylvania, Philadelphia, United States
| | - João Ricardo Sato
- Center of Mathematics, Computation and Cognition, Universidade Federal do ABC, Brazil
| | | | | | - Rodrigo Grassi-Oliveira
- Post-Graduation Program in Psychology, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Developmental Cognitive Neuroscience Lab, PUCRS, Brazil
| | - Jair Mari
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Rodrigo A Bressan
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Ary Gadelha
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Pedro M Pan
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Sintia Iole Belangero
- Genetics Division of Department of Morphology and Genetics of Universidade Federal de Sao Paulo (UNIFESP), Brazil; LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil.
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212
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Faraji J, Karimi M, Soltanpour N, Moharrerie A, Rouhzadeh Z, Lotfi H, Hosseini SA, Jafari SY, Roudaki S, Moeeini R, Metz GA. Oxytocin-mediated social enrichment promotes longer telomeres and novelty seeking. eLife 2018; 7:40262. [PMID: 30422111 PMCID: PMC6277206 DOI: 10.7554/elife.40262] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 11/12/2018] [Indexed: 12/28/2022] Open
Abstract
The quality of social relationships is a powerful determinant of lifetime health. Here, we explored the impact of social experiences on circulating oxytocin (OT) concentration, telomere length (TL), and novelty-seeking behaviour in male and female rats. Prolonged social housing raised circulating OT levels in both sexes while elongating TL only in females. Novelty-seeking behaviour in females was more responsive to social housing and increased OT levels than males. The OT antagonist (OT ANT) L-366,509 blocked the benefits of social housing in all conditions along with female-specific TL erosion and novelty-seeking deficit. Thus, females seem more susceptible than males to genetic and behavioural changes when the secretion of endogenous OT in response to social life is interrupted. Social enrichment may, therefore, provide a therapeutic avenue to promote stress resiliency and chances of healthy aging across generations.
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Affiliation(s)
- Jamshid Faraji
- Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, Canada.,Faculty of Nursing & Midwifery, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mitra Karimi
- Inclusive-Integrated Education Program for Children with Special Needs, Exceptional Education Organization, Tehran, Iran
| | - Nabiollah Soltanpour
- Department of Anatomical Sciences, Babol University of Medical Sciences, Babol, Iran
| | - Alireza Moharrerie
- Department of Anatomy, Golestan University of Medical Sciences, Gorgan, Iran
| | - Zahra Rouhzadeh
- Department of Psychology, Islamic Azad University, Sari, Iran
| | - Hamid Lotfi
- Department of Psychology, Islamic Azad University, Tonekabon, Iran
| | - S Abedin Hosseini
- Faculty of Nursing & Midwifery, Golestan University of Medical Sciences, Gorgan, Iran
| | - S Yaghoob Jafari
- Faculty of Nursing & Midwifery, Golestan University of Medical Sciences, Gorgan, Iran
| | - Shabnam Roudaki
- Department of Behavioural Studies, Avicenna Institute of Neuroscience, Yazd, Iran
| | - Reza Moeeini
- Department of Behavioural Studies, Avicenna Institute of Neuroscience, Yazd, Iran
| | - Gerlinde As Metz
- Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, Canada
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213
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Brown LL, Zhang YS, Mitchell C, Ailshire J. Does Telomere Length Indicate Biological, Physical, and Cognitive Health Among Older Adults? Evidence from the Health and Retirement Study. J Gerontol A Biol Sci Med Sci 2018; 73:1626-1632. [PMID: 29346517 PMCID: PMC6230208 DOI: 10.1093/gerona/gly001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Indexed: 12/26/2022] Open
Abstract
Telomere length (TL) has been suggested as a biomarker that can indicate individual variability in the rate of aging. Yet, it remains unclear whether TL is related to recognized indicators of health in an aging, older nationally representative sample. We examine whether TL is associated with 15 biological, physical, and cognitive markers of health among older adults ages 54+. TL was assayed from saliva using quantitative polymerase chain reaction (T/S ratio) in the 2008 Health and Retirement Study (n = 4,074). We estimated probability of high-risk levels across indictors of health by TL and age-singly and jointly. TL was associated with seven indicators of poor functioning: high-density lipoprotein and total cholesterol, cystatin C, pulse pressure, body mass index, lung function, and walking speed. However, after adjusting for age, associations were substantially attenuated; only associations with cholesterol and lung function remained significant. Additionally, findings show TL did not add to the predictive power of chronological age in predicting poor functioning. While TL may not be a useful clinical marker of functional aging in an older adult population, it may still play an important role in longitudinal studies in young and middle aged populations that attempt to understand aging.
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Affiliation(s)
- Lauren L Brown
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles
| | - Yuan S Zhang
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles
| | - Colter Mitchell
- Institute for Social Research, University of Michigan, Ann Arbor
| | - Jennifer Ailshire
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles
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214
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Relative Telomere Length and Stroke Risk in a Chinese Han Population. J Mol Neurosci 2018; 66:475-481. [PMID: 30345460 DOI: 10.1007/s12031-018-1160-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 08/15/2018] [Indexed: 10/28/2022]
Abstract
This study aimed to further understand the role of relative telomere length (RTL) in susceptibility to stroke and investigate the association regulator of telomere elongation helicase 1 (RETL1) gene polymorphisms and RTL. RTL was measured using the real-time quantitative polymerase chain reaction (qPCR) from 300 stroke patients and 299 healthy controls. Genotyping was performed using the Sequenom MassARRAY platform. The results indicated that stroke patients had significantly shorter median RTL than controls (P < 0.001). Compared with the longer RTL (≥ 0.766), the shorter RTL (< 0.766) was significantly increased the risk of stroke (odds ratio [OR] = 8.44, 95% confidence interval [CI] 5.42-13.14, P < 0.001). The RTL was categorized into tertiles, we found that the shorter RTL (0.515-1.366) (OR = 16.27, 95% CI 7.72-34.29, P < 0.001) and lowest RTL (< 0.515) (OR = 30.63, 95% CI 14.27-65.75, P < 0.001) were significantly increased stroke risk compared with the highest RTL (> 1.366). Stratified analysis showed that the shorter RTL was also significantly increased the risk of stroke compared with the longer RTL in male, age < 60 years and ≥ 60 years, except the female participants. In addition, individuals with the genotypes AA (rs2297441) and GG (rs6089953) have shorter telomeres than the genotypes GG (P = 0.031) and AA (P = 0.032), respectively. Our results suggested that shorter RTL was associated with an increased risk of stroke. The association was found between the genotypes AA (rs2297441) and GG (rs6089953) and shorter RTL in case group. Further studies in larger sample size and biological functional assays are warranted to validate our findings.
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215
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Lucas T, Woerner J, Pierce J, Granger DA, Lin J, Epel ES, Assari S, Lumley MA. Justice for all? Beliefs about justice for self and others and telomere length in African Americans. CULTURAL DIVERSITY & ETHNIC MINORITY PSYCHOLOGY 2018; 24:498-509. [PMID: 30058830 PMCID: PMC6188832 DOI: 10.1037/cdp0000212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
OBJECTIVE Believing in justice can protect health. Among marginalized racial minorities however, both endorsing and rejecting beliefs about justice might be critical. The current research examined links between African Americans' beliefs about justice for self and for others and telomere length (TL)-an indicator of biological aging that is increasingly implicated in racial health disparities, with shorter telomeres indicating poorer health. METHOD Healthy African Americans (N = 118; 30% male; M age = 31.63 years) completed individual differences measures of justice beliefs for self and others and then provided dried blood spot samples that were assayed for TL. RESULTS We expected that a belief in justice for self would be positively associated with TL, whereas a belief in justice for others would be negatively associated. A significant 3-way interaction with chronological age confirmed this hypothesis-among older African Americans, TL was positively associated with believing in justice for self, but only when this belief was accompanied by a weak endorsement of the belief in justice for others. CONCLUSION Findings underscore that for racial minorities, health might be best protected when justice beliefs are both endorsed and rebuffed. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
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Affiliation(s)
- Todd Lucas
- Department of Family Medicine and Public Health Sciences, Wayne State University, 3939 Woodward Ave., Detroit, MI 48201
- Department of Psychology, Wayne State University, 5057 Woodward Ave., Detroit, MI 48202
- Institute for Interdisciplinary Salivary Bioscience Research, University of California at Irvine, 4201 Social and Behavioral Sciences Gateway, Irvine, CA, 92697-7085
| | - Jacqueline Woerner
- Department of Psychology, Wayne State University, 5057 Woodward Ave., Detroit, MI 48202
| | - Jennifer Pierce
- Department of Psychology, Wayne State University, 5057 Woodward Ave., Detroit, MI 48202
| | - Douglas A. Granger
- Institute for Interdisciplinary Salivary Bioscience Research, University of California at Irvine, 4201 Social and Behavioral Sciences Gateway, Irvine, CA, 92697-7085
- Department of Acute and Chronic Care, Johns Hopkins University School of Nursing; Department of Population, Family, and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health; Department of Pediatrics, Johns Hopkins University School of Medicine 615 North Wolfe St., Baltimore, MD 21205
- Salivary Bioscience Laboratory and Department of Psychology, University of Nebraska-Lincoln, Lincoln NE 68588-0156
| | - Jue Lin
- University of California, San Francisco, Department of Biochemistry and Biophysics, 600 16th Street, San Francisco, CA 94158
| | - Elissa S. Epel
- University of California, San Francisco, Department of Psychiatry, 3333 Calif St, Suite 465, San Francisco, CA 94143
| | - Shervin Assari
- University of Michigan, Department of Psychiatry, 4250 Plymouth Road, SPC 5763, Ann Arbor, MI 48109-2700
| | - Mark A. Lumley
- Department of Psychology, Wayne State University, 5057 Woodward Ave., Detroit, MI 48202
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216
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Tsamou M, Martens DS, Cox B, Madhloum N, Vrijens K, Nawrot TS. Sex-specific associations between telomere length and candidate miRNA expression in placenta. J Transl Med 2018; 16:254. [PMID: 30208911 PMCID: PMC6134555 DOI: 10.1186/s12967-018-1627-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 09/04/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND In the early-life environment, proper development of the placenta is essential for both fetal and maternal health. Telomere length at birth has been related to life expectancy. MicroRNAs (miRNAs) as potential epigenetic determinants of telomere length at birth have not been identified. In this study, we investigate whether placental miRNA expression is associated with placental telomere length at birth. METHODS We measured the expression of seven candidate miRNAs (miR-16-5p, -20a-5p, -21-5p, -34a-5p, 146a-5p, -210-3p and -222-3p) in placental tissue at birth in 203 mother-newborn (51.7% girls) pairs from the ENVIRONAGE birth cohort. We selected miRNAs known to be involved in crucial cellular processes such as inflammation, oxidative stress, cellular senescence related to aging. Placental miRNA expression and relative average placental telomere length were measured using RT-qPCR. RESULTS Both before and after adjustment for potential covariates including newborn's ethnicity, gestational age, paternal age, maternal smoking status, maternal educational status, parity, date of delivery and outdoor temperature during the 3rd trimester of pregnancy, placental miR-34a, miR-146a, miR-210 and miR-222 expression were significantly (p ≤ 0.03) and positively associated with placental relative telomere length in newborn girls. In newborn boys, only higher expression of placental miR-21 was weakly (p = 0.08) associated with shorter placental telomere length. Significant miRNAs explain around 6-8% of the telomere length variance at birth. CONCLUSIONS Placental miR-21, miR-34a, miR-146a, miR-210 and miR-222 exhibit sex-specific associations with telomere length in placenta. Our results indicate miRNA expression in placental tissue could be an important determinant in the process of aging starting from early life onwards.
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Affiliation(s)
- Maria Tsamou
- Center for Environmental Sciences, Hasselt University, 3500, Hasselt, Belgium
| | - Dries S Martens
- Center for Environmental Sciences, Hasselt University, 3500, Hasselt, Belgium
| | - Bianca Cox
- Center for Environmental Sciences, Hasselt University, 3500, Hasselt, Belgium
| | - Narjes Madhloum
- Center for Environmental Sciences, Hasselt University, 3500, Hasselt, Belgium
| | - Karen Vrijens
- Center for Environmental Sciences, Hasselt University, 3500, Hasselt, Belgium.
| | - Tim S Nawrot
- Center for Environmental Sciences, Hasselt University, 3500, Hasselt, Belgium.,Environment & Health Unit, Department of Public Health, Leuven University (KU Leuven), 3000, Louvain, Belgium
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217
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Gielen M, Hageman GJ, Antoniou EE, Nordfjall K, Mangino M, Balasubramanyam M, de Meyer T, Hendricks AE, Giltay EJ, Hunt SC, Nettleton JA, Salpea KD, Diaz VA, Farzaneh-Far R, Atzmon G, Harris SE, Hou L, Gilley D, Hovatta I, Kark JD, Nassar H, Kurz DJ, Mather KA, Willeit P, Zheng YL, Pavanello S, Demerath EW, Rode L, Bunout D, Steptoe A, Boardman L, Marti A, Needham B, Zheng W, Ramsey-Goldman R, Pellatt AJ, Kaprio J, Hofmann JN, Gieger C, Paolisso G, Hjelmborg JBH, Mirabello L, Seeman T, Wong J, van der Harst P, Broer L, Kronenberg F, Kollerits B, Strandberg T, Eisenberg DTA, Duggan C, Verhoeven JE, Schaakxs R, Zannolli R, dos Reis RMR, Charchar FJ, Tomaszewski M, Mons U, Demuth I, Iglesias Molli AE, Cheng G, Krasnienkov D, D'Antono B, Kasielski M, McDonnell BJ, Ebstein RP, Sundquist K, Pare G, Chong M, Zeegers MP. Body mass index is negatively associated with telomere length: a collaborative cross-sectional meta-analysis of 87 observational studies. Am J Clin Nutr 2018; 108:453-475. [PMID: 30535086 PMCID: PMC6454526 DOI: 10.1093/ajcn/nqy107] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 04/27/2018] [Indexed: 12/12/2022] Open
Abstract
Background Even before the onset of age-related diseases, obesity might be a contributing factor to the cumulative burden of oxidative stress and chronic inflammation throughout the life course. Obesity may therefore contribute to accelerated shortening of telomeres. Consequently, obese persons are more likely to have shorter telomeres, but the association between body mass index (BMI) and leukocyte telomere length (TL) might differ across the life span and between ethnicities and sexes. Objective A collaborative cross-sectional meta-analysis of observational studies was conducted to investigate the associations between BMI and TL across the life span. Design Eighty-seven distinct study samples were included in the meta-analysis capturing data from 146,114 individuals. Study-specific age- and sex-adjusted regression coefficients were combined by using a random-effects model in which absolute [base pairs (bp)] and relative telomere to single-copy gene ratio (T/S ratio) TLs were regressed against BMI. Stratified analysis was performed by 3 age categories ("young": 18-60 y; "middle": 61-75 y; and "old": >75 y), sex, and ethnicity. Results Each unit increase in BMI corresponded to a -3.99 bp (95% CI: -5.17, -2.81 bp) difference in TL in the total pooled sample; among young adults, each unit increase in BMI corresponded to a -7.67 bp (95% CI: -10.03, -5.31 bp) difference. Each unit increase in BMI corresponded to a -1.58 × 10(-3) unit T/S ratio (0.16% decrease; 95% CI: -2.14 × 10(-3), -1.01 × 10(-3)) difference in age- and sex-adjusted relative TL in the total pooled sample; among young adults, each unit increase in BMI corresponded to a -2.58 × 10(-3) unit T/S ratio (0.26% decrease; 95% CI: -3.92 × 10(-3), -1.25 × 10(-3)). The associations were predominantly for the white pooled population. No sex differences were observed. Conclusions A higher BMI is associated with shorter telomeres, especially in younger individuals. The presently observed difference is not negligible. Meta-analyses of longitudinal studies evaluating change in body weight alongside change in TL are warranted.
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Affiliation(s)
- Marij Gielen
- Departments of Complex Genetics,Address correspondence to MG (e-mail: )
| | - Geja J Hageman
- Toxicology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht University, Netherlands
| | - Evangelia E Antoniou
- Department of Clinical Psychological Science, Faculty of Psychology and Neuroscience, Maastricht University, Netherlands
| | | | - Massimo Mangino
- Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom,NIHR Biomedical Research Center at Guy's and St. Thomas’ Foundation Trust, London, United Kingdom
| | | | - Tim de Meyer
- Department of Mathematical Modeling, Statistics, and Bioinformatics, Ghent University, Ghent, Belgium
| | - Audrey E Hendricks
- Population Sciences Branch of the National Heart, Lung, and Blood Institute (NHLBI), NIH, NHLBI's Framingham Heart Study, Framingham, MA,Department of Mathematical and Statistical Sciences, University of Colorado–Denver, Denver, CO
| | - Erik J Giltay
- Department of Psychiatry, Leiden University Medical Center, Leiden, Netherlands
| | - Steven C Hunt
- Cardiovascular Genetics Division, Department of Medicine, University of Utah, Salt Lake City, UT
| | - Jennifer A Nettleton
- Division of Epidemiology, Human Genetics, and Environmental Sciences, University of Texas Health Science Center, Houston, TX
| | - Klelia D Salpea
- Department of Molecular Biology and Genetics, BSRC “Alexander Fleming,” Athens, Greece
| | - Vanessa A Diaz
- Department of Family Medicine, Medical University of South Carolina, Charleston, SC
| | - Ramin Farzaneh-Far
- Division of Cardiology, San Francisco General Hospital, San Francisco, CA
| | - Gil Atzmon
- Department of Medicine and Genetics, Albert Einstein College of Medicine, Bronx, NY, and Department of Biology, Faculty of Natural Science, University of Haifa, Haifa, Israel
| | - Sarah E Harris
- Center for Cognitive Aging and Cognitive Epidemiology and Medical Genetics Section and Center for Genomics and Experimental Medicine and MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Lifang Hou
- Department of Preventive Medicine and Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - David Gilley
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN
| | - Iiris Hovatta
- Department of Biosciences, University of Helsinki, Helsinki, Finland,Department of Health, National Institute for Health and Welfare, Helsinki, Finland
| | - Jeremy D Kark
- Epidemiology Unit, Hebrew University–Hadassah School of Public Health and Community Medicine, Jerusalem, Israel
| | - Hisham Nassar
- Department of Cardiology, Hadassah University Medical Center, Jerusalem, Israel
| | - David J Kurz
- Department of Cardiology, Triemli Hospital, Zurich, Switzerland
| | - Karen A Mather
- Centre for Healthy Brain Ageing, Psychiatry, UNSW Australia, Sydney, Australia
| | - Peter Willeit
- Department of Neurology, Medical University Innsbruck, Innsbruck, Austria, and Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Yun-Ling Zheng
- Department of Oncology, Georgetown University Medical Center, Georgetown University, Washington, DC
| | - Sofia Pavanello
- Department of Cardiac, Thoracic, and Vascular Sciences, Unit of Occupational Medicine, University of Padova, Padova, Italy
| | - Ellen W Demerath
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, MN
| | - Line Rode
- The Copenhagen General Population Study, Department of Clinical Biochemistry, Copenhagen University Hospital, Herlev and Gentofte Hospital, Copenhagen, Denmark
| | - Daniel Bunout
- Institute of Nutrition and Food Technology University of Chile, Santiago, Chile
| | - Andrew Steptoe
- Department of Epidemiology and Public Health, University College London, London, United Kingdom
| | - Lisa Boardman
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, MN
| | - Amelia Marti
- Department of Nutrition, Food Science, and Physiology, University of Navarra, Pamplona, Spain,Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain,CIBER Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - Belinda Needham
- Department of Epidemiology, University of Michigan, Ann Arbor, MI
| | - Wei Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN
| | | | | | - Jaakko Kaprio
- Department of Public Health,Institute for Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Jonathan N Hofmann
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD
| | - Christian Gieger
- Research Unit of Molecular Epidemiology and Institute of Epidemiology II, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Giuseppe Paolisso
- Department of Medical, Surgical, Neurological, Metabolic, and Geriatric Sciences, Second University of Naples, Naples, Italy
| | - Jacob B H Hjelmborg
- Department of Epidemiology, Biostatistics, and Biodemography, Institute of Public Health, University of Southern Denmark, Odense C, Denmark
| | - Lisa Mirabello
- Department of Medical, Surgical, Neurological, Metabolic, and Geriatric Sciences, Second University of Naples, Naples, Italy
| | - Teresa Seeman
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Jason Wong
- Stanford University School of Medicine, Stanford, CA
| | - Pim van der Harst
- Department of Cardiology, University Medical Center Groningen, Groningen, Netherlands
| | - Linda Broer
- Department of Internal Medicine, Erasmus MC, Rotterdam, Netherlands
| | - Florian Kronenberg
- Division of Genetic Epidemiology, Department of Medical Genetics, Molecular, and Clinical Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
| | - Barbara Kollerits
- Division of Genetic Epidemiology, Department of Medical Genetics, Molecular, and Clinical Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
| | - Timo Strandberg
- University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland; Center for Life Course Epidemiology, University of Oulu, Oulu, Finland
| | - Dan T A Eisenberg
- Department of Anthropology and Center for Studies in Demography and Ecology, University of Washington, Seattle, WA
| | | | - Josine E Verhoeven
- Department of Psychiatry, VU University Medical Center, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
| | - Roxanne Schaakxs
- Department of Psychiatry, VU University Medical Center, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
| | - Raffaela Zannolli
- Pediatrics Unit, Azienda Ospedaliera Universitaria, Senese/University of Siena, Policlinico Le Scotte, Siena, Italy
| | - Rosana M R dos Reis
- Department of Gynecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fadi J Charchar
- School of Science and Technology, Federation University Australia, Department of Physiology, University of Melbourne, Melbourne, Australia, and Department of Cardiovascular Sciences, University of Leicester, Leicester, United Kingdom
| | - Maciej Tomaszewski
- Division of Cardiovascular Sciences, Faculty of Medicine, Biology, and Health, University of Manchester, Manchester, United Kingdom,Division of Medicine, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Ute Mons
- Division of Clinical Epidemiology and Aging Research,Cancer Prevention Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ilja Demuth
- Charité–Universitätsmedizin Berlin (corporate member of Freie Universität Berlin), Humboldt-Universität zu Berlin, and Berlin Institute of Health, Lipid Clinic at the Interdisciplinary Metabolism Center, Berlin, Germany
| | - Andrea Elena Iglesias Molli
- CONICET-Universidad de Buenos Aires. Instituto de Inmunología, Genética y Metabolismo (INIGEM). Laboratorio de Diabetes y Metabolismo, Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Guo Cheng
- Department of Nutrition, Food Safety, and Toxicology, West China School of Public Health, Sichuan University, Chengdu, China
| | - Dmytro Krasnienkov
- Department of Epigenetics, DF Chebotarev State Institute of Gerontology NAMS of Ukraine, Kyiv, Ukraine
| | - Bianca D'Antono
- Research Center, Montreal Heart Institute, and Psychology Department, University of Montreal, Montreal, Quebec, Canada
| | - Marek Kasielski
- Bases of Clinical Medicine Teaching Center, Medical University of Lodz, Lodz, Poland
| | - Barry J McDonnell
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom
| | | | - Kristina Sundquist
- Center for Primary Health Care Research, Lund University, Region Skåne, Lund, Sweden
| | - Guillaume Pare
- Population Health Research Institute and McMaster University, Hamilton, Canada
| | - Michael Chong
- Population Health Research Institute and McMaster University, Hamilton, Canada
| | - Maurice P Zeegers
- Departments of Complex Genetics,CAPHRI School for Public Health and Primary Care, Maastricht University, Maastricht, Netherlands
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Pepper GV, Bateson M, Nettle D. Telomeres as integrative markers of exposure to stress and adversity: a systematic review and meta-analysis. ROYAL SOCIETY OPEN SCIENCE 2018. [PMID: 30225068 DOI: 10.5281/zenodo.1189538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Telomeres have been proposed as a biomarker that integrates the impacts of different kinds of stress and adversity into a common currency. There has as yet been no overall comparison of how different classes of exposure associate with telomeres. We present a meta-analysis of the literature relating telomere measures to stresses and adversities in humans. The analysed dataset contained 543 associations from 138 studies involving 402 116 people. Overall, there was a weak association between telomere variables and exposures (greater adversity, shorter telomeres: r = -0.15, 95% CI -0.18 to -0.11). This was not driven by any one type of exposure, because significant associations were found separately for physical diseases, environmental hazards, nutrition, psychiatric illness, smoking, physical activity, psychosocial and socioeconomic exposures. Methodological features of the studies did not explain any substantial proportion of the heterogeneity in association strength. There was, however, evidence consistent with publication bias, with unexpectedly strong negative associations reported by studies with small samples. Restricting analysis to sample sizes greater than 100 attenuated the overall association substantially (r = -0.09, 95% CI -0.13 to -0.05). Most studies were underpowered to detect the typical association magnitude. The literature is dominated by cross-sectional and correlational studies which makes causal interpretation problematic.
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Affiliation(s)
- Gillian V Pepper
- Centre for Behaviour and Evolution and Institute of Neuroscience, Newcastle University, Henry Wellcome Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Melissa Bateson
- Centre for Behaviour and Evolution and Institute of Neuroscience, Newcastle University, Henry Wellcome Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Daniel Nettle
- Centre for Behaviour and Evolution and Institute of Neuroscience, Newcastle University, Henry Wellcome Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
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219
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Pepper GV, Bateson M, Nettle D. Telomeres as integrative markers of exposure to stress and adversity: a systematic review and meta-analysis. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180744. [PMID: 30225068 PMCID: PMC6124068 DOI: 10.1098/rsos.180744] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 07/11/2018] [Indexed: 05/19/2023]
Abstract
Telomeres have been proposed as a biomarker that integrates the impacts of different kinds of stress and adversity into a common currency. There has as yet been no overall comparison of how different classes of exposure associate with telomeres. We present a meta-analysis of the literature relating telomere measures to stresses and adversities in humans. The analysed dataset contained 543 associations from 138 studies involving 402 116 people. Overall, there was a weak association between telomere variables and exposures (greater adversity, shorter telomeres: r = -0.15, 95% CI -0.18 to -0.11). This was not driven by any one type of exposure, because significant associations were found separately for physical diseases, environmental hazards, nutrition, psychiatric illness, smoking, physical activity, psychosocial and socioeconomic exposures. Methodological features of the studies did not explain any substantial proportion of the heterogeneity in association strength. There was, however, evidence consistent with publication bias, with unexpectedly strong negative associations reported by studies with small samples. Restricting analysis to sample sizes greater than 100 attenuated the overall association substantially (r = -0.09, 95% CI -0.13 to -0.05). Most studies were underpowered to detect the typical association magnitude. The literature is dominated by cross-sectional and correlational studies which makes causal interpretation problematic.
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Affiliation(s)
| | | | - Daniel Nettle
- Centre for Behaviour and Evolution and Institute of Neuroscience, Newcastle University, Henry Wellcome Building, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
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220
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Hiraishi N, Terai M, Fujiwara M, Aida J, Izumiyama-Shimomura N, Ishikawa N, Tomita KI, Matsuda Y, Arai T, Takubo K, Ishiwata T. Quantitative fluorescence in situ hybridization for investigation of telomere length dynamics in the pituitary gland using samples from 128 autopsied patients. Tissue Cell 2018; 53:1-7. [DOI: 10.1016/j.tice.2018.05.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 04/26/2018] [Accepted: 05/17/2018] [Indexed: 02/06/2023]
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221
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Denham J, Denham MM. Leukocyte telomere length in the Thoroughbred racehorse. Anim Genet 2018; 49:452-456. [PMID: 30051918 DOI: 10.1111/age.12681] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2018] [Indexed: 12/16/2022]
Abstract
Thoroughbred racehorses possess superior cardiorespiratory fitness levels and are at the pinnacle of athletic performance compared to other breeds of horses. Although equine athletes have undergone years of artificial selection for racing performance, musculoskeletal injuries and illnesses are common and concerns relating to animal welfare have been proposed. Leukocyte telomere length is indicative of biological age, and accelerated telomere shortening occurs with excess physical and psychological stress. This study was designed to explore the association between leukocyte telomere length, biological factors (age, sex and coat colour), training status, winnings and race history parameters. Blood was collected from 146 Thoroughbred racehorses from around Geelong, Victoria, Australia. DNA was extracted from leukocytes; telomere length was measured using qPCR and analysed in context with traits obtained from the Racing Australia website. Age was inversely correlated with telomere length (r = -0.194, P = 0.019). The oldest horses (≥11 years) in the highest age quartile possessed shorter telomeres compared to younger horses in the first, second and third quartiles (≤2, 3-5 and 6-10 years respectively; P < 0.05). No statistically significant associations were observed between telomere length and biological factors, training status, winnings or race history parameters in age-adjusted analyses. The study findings suggest that Thoroughbred horses may undergo age-related telomere shortening similar to other mixed breeds and humans. Despite concerns from some quarters regarding the welfare of racehorses, there was a lack of accelerated biological ageing observed in the present study, as indicated by leukocyte telomere length.
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Affiliation(s)
- J Denham
- School of Health and Biomedical Sciences, RMIT University, Bundoora West Campus, Bundoora, VIC, 3083, Australia.,School of Science and Technology, University of New England, Armidale, NSW, 2351, Australia
| | - M M Denham
- Jubilee Stud, Freshwater Creek, VIC, 3217, Australia
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Relationship of Absolute Telomere Length With Quality of Life, Exacerbations, and Mortality in COPD. Chest 2018; 154:266-273. [PMID: 30017346 DOI: 10.1016/j.chest.2018.05.022] [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: 11/09/2017] [Revised: 04/07/2018] [Accepted: 05/01/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND COPD is an age-related disease. The role of cellular senescence in COPD has not been fully elucidated. This study examined the relationship between telomere length of peripheral blood leukocytes and clinical outcomes, including health status, rate of exacerbations, and risk of mortality in individuals with COPD. METHODS Using quantitative polymerase chain reaction, we measured the absolute telomere length (aTL) of DNA extracted from blood samples of 576 participants with moderate-to-severe COPD treated with either azithromycin or placebo for 12 months in the Macrolide Azithromycin for Prevention of Exacerbations of COPD (MACRO) study. All participants were followed for approximately 13 months, during which time health status and exacerbations were carefully ascertained, and an additional 29 months for mortality. The rates of exacerbation and mortality were determined by dividing the aTL into two groups using the median value as the cutoff. RESULTS Participants with shorter telomere length had worse health status defined by higher St. George's Respiratory Questionnaire scores (β = -0.09, P = .034). In the placebo arm of the study, the rate of exacerbation (rate ratio, 1.50; 95% CI, 1.16-1.95; P = .002) and the risk of mortality (hazard ratio, 9.45; 95% CI, 2.85-31.36; P = .015) were significantly higher in the shorter telomere group than in the longer telomere group; these differences were not observed in the azithromycin arm (interaction P = .008 for exacerbation and interaction P = .017 for mortality) CONCLUSIONS: These data suggest that replicative senescence may help to predict poor outcomes in COPD. Shorter leukocyte telomere lengths may represent a clinically translatable biomarker for identifying individuals at increased risk of poor clinical outcomes in COPD.
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Gutmajster E, Chudek J, Augusciak-Duma A, Szwed M, Szybalska A, Mossakowska M, Puzianowska-Kuznicka M, Wiecek A, Sieron AL. Possible association of the TERT promoter polymorphisms rs2735940, rs7712562 and rs2853669 with diabetes mellitus in obese elderly Polish population: results from the national PolSenior study. J Appl Genet 2018; 59:291-299. [PMID: 29938393 PMCID: PMC6060992 DOI: 10.1007/s13353-018-0450-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 05/25/2018] [Accepted: 06/08/2018] [Indexed: 12/12/2022]
Abstract
One of the markers of aging is lymphocyte telomere length (LTL), which is affected by genetic constitution of the organism and environmental conditions, such as development and diseases, including diabetes. The relationship of the later seems to be bilateral. The enzyme responsible for the maintenance of telomere length is a subunit of telomerase-telomerase reverse transcriptase (TERT). The aims of the present study were to (1) determine the influence of the TERT promoter sequence SNP variants on relative telomere length (RTL) in an elderly Polish population and (2) explore the potential associations of the SNPs with the type 2 diabetes mellitus (T2DM) in the obese individuals. Two highly homogenous subgroups of PolSenior participants were investigated, the first constituted 70 relatively healthy respondents and the second 70 individuals with T2DM. Telomere length ratio (T/S value) was measured; 1.5 kb part upstream of the transcription start site of the TERT promoter was sequenced, and the frequencies of polymorphisms were calculated and compared against analysed data. Low-frequency SNPs were evaluated but excluded from further comparative analyses to RTL and glucose metabolism markers. No significant difference in telomere length was found between the two studied subgroups. Univariate statistical analyses showed only a weak association of environmental or genetic factors altering this marker of aging. Approximate frequency of four SNPs in TERT promoter sequence was assessed in Polish population aged 65-95 years, but three of them (rs2735940, rs7712562 and rs2853669) were selected for further analyses. The SNP selection was based on their minor allele frequencies in general population and on published data. The univariate analysis has revealed that carriers of CC SNP (rs2853669) have had the shortest RTL in the T2DM group. Multivariate analysis has also revealed that the genetic effect of TERT promoter CC SNP was strengthened by the incidence of T2DM. The additional variation in RTL in paired groups indicates that in addition to T2DM and genetics, there are other factors contributing to development of the age-related diseases.
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Affiliation(s)
- Ewa Gutmajster
- Department of Molecular Biology and Genetics, School of Medicine in Katowice, Medical University of Silesia in Katowice, 18 Medykow Street, 40-752, Katowice, Poland
| | - Jerzy Chudek
- Department of Internal Medicine and Oncological Chemotherapy, School of Medicine in Katowice, Medical University of Silesia in Katowice, 40-027, Katowice, Poland
| | - Aleksandra Augusciak-Duma
- Department of Molecular Biology and Genetics, School of Medicine in Katowice, Medical University of Silesia in Katowice, 18 Medykow Street, 40-752, Katowice, Poland
| | - Malgorzata Szwed
- Department of Human Epigenetics, Mossakowski Medical Research Centre, 02-106, Warsaw, Poland
| | | | | | - Monika Puzianowska-Kuznicka
- Department of Human Epigenetics, Mossakowski Medical Research Centre, 02-106, Warsaw, Poland
- Department of Geriatrics and Gerontology, Medical Centre of Postgraduate Education, 01-813, Warsaw, Poland
| | - Andrzej Wiecek
- Department of Nephrology, Transplantation and Internal Medicine, Medical University of Silesia, 40-027, Katowice, Poland
| | - Aleksander L Sieron
- Department of Molecular Biology and Genetics, School of Medicine in Katowice, Medical University of Silesia in Katowice, 18 Medykow Street, 40-752, Katowice, Poland.
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Martens DS, Nawrot TS. Ageing at the level of telomeres in association to residential landscape and air pollution at home and work: a review of the current evidence. Toxicol Lett 2018; 298:42-52. [PMID: 29944903 DOI: 10.1016/j.toxlet.2018.06.1213] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 06/06/2018] [Accepted: 06/19/2018] [Indexed: 12/13/2022]
Abstract
Studies suggest that leukocyte telomere length is an index of systemic ageing. Here, we discuss telomere length as a marker of biological ageing in relation to residential landscape (greenness), residential air pollution and work-related exposures. Telomere lengths are memories of cumulative oxidative and inflammatory stress, and show to have inverse associations with the risk of non-communicable diseases. For this reason, telomeres are considered as markers of biological ageing. Studies at birth, in children, young adulthood, and elderly show that residential green space, lower traffic exposure and long-term lower exposure to particulate air pollution are associated with longer telomeres. Work-related exposures including exposure to toxic metals, polycyclic aromatic hydrocarbons and particulate matter are associated with shorter telomeres for a given age. In contrast to chronic exposures, evidence is present of the observation that recent exposure is associated with longer telomeres. Our overview shows that the magnitude of residential and work-related environmental factors on telomere length are often as important as many classical lifestyle factors.
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Affiliation(s)
- Dries S Martens
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium; Department of Public Health & Primary Care, Leuven University, Leuven, Belgium.
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225
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Martens DS, Wei FF, Cox B, Plusquin M, Thijs L, Winckelmans E, Zhang ZY, Nawrot TS, Staessen JA. Retinal microcirculation and leukocyte telomere length in the general population. Sci Rep 2018; 8:7095. [PMID: 29728662 PMCID: PMC5935741 DOI: 10.1038/s41598-018-25165-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 04/09/2018] [Indexed: 11/13/2022] Open
Abstract
Retinal arteriolar narrowing increases with age and predict adverse cardiovascular outcomes. Telomere length keeps track of the division of somatic cells and is a biomarker of biological age. We investigated to what extent retinal arteriolar diameters are associated with biological age, as captured by leukocyte telomere length (LTL). In 168 randomly selected Flemish participants from the family-based population study FLEMENGHO (mean age, 46.2 years) at baseline, of whom 85 underwent a follow-up examination (median, 4.1 years), we post-processed nonmydriatic retinal photographs and measured LTL. In men only, central retinal arteriolar equivalents (CRAE) and arteriole-to-venule ratio (AVR) were associated with LTL with stronger associations at higher age and body mass index. In men aged 57.6 years (75th percentile) a 20% shorter LTL was associated with a decrease in CRAE of 4.57 µm. A 20% shorter LTL was associated with a decrease of 5.88 µm in CRAE at a BMI of 29.9 kg/m2 (75th percentile). Similar associations were observed between AVR and LTL. In women, no retinal microvascular traits were associated with LTL. Retinal arteriolar narrowing in men but not in women is associated with biological age. Our findings support the idea that avoiding overweight contributes to maintaining a healthier microcirculation.
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Affiliation(s)
- Dries S Martens
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Fang-Fei Wei
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Bianca Cox
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Michelle Plusquin
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Lutgarde Thijs
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Ellen Winckelmans
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Zhen-Yu Zhang
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
- Department of Public Health & Primary Care, University of Leuven, Leuven, Belgium
| | - Jan A Staessen
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, KU Leuven Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium.
- R&D Group VitaK, Maastricht University, Maastricht, The Netherlands.
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226
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Conklin QA, King BG, Zanesco AP, Lin J, Hamidi AB, Pokorny JJ, Álvarez-López MJ, Cosín-Tomás M, Huang C, Kaliman P, Epel ES, Saron CD. Insight meditation and telomere biology: The effects of intensive retreat and the moderating role of personality. Brain Behav Immun 2018. [PMID: 29518528 DOI: 10.1016/j.bbi.2018.03.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
A growing body of evidence suggests that meditation training may have a range of salubrious effects, including improved telomere regulation. Telomeres and the enzyme telomerase interact with a variety of molecular components to regulate cell-cycle signaling cascades, and are implicated in pathways linking psychological stress to disease. We investigated the effects of intensive meditation practice on these biomarkers by measuring changes in telomere length (TL), telomerase activity (TA), and telomere-related gene (TRG) expression during a 1-month residential Insight meditation retreat. Multilevel analyses revealed an apparent TL increase in the retreat group, compared to a group of experienced meditators, similarly comprised in age and gender, who were not on retreat. Moreover, personality traits predicted changes in TL, such that retreat participants highest in neuroticism and lowest in agreeableness demonstrated the greatest increases in TL. Changes observed in TRGs further suggest retreat-related improvements in telomere maintenance, including increases in Gar1 and HnRNPA1, which encode proteins that bind telomerase RNA and telomeric DNA. Although no group-level changes were observed in TA, retreat participants' TA levels at post-assessment were inversely related to several indices of retreat engagement and prior meditation experience. Neuroticism also predicted variation in TA across retreat. These findings suggest that meditation training in a retreat setting may have positive effects on telomere regulation, which are moderated by individual differences in personality and meditation experience. (ClinicalTrials.gov #NCT03056105).
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Affiliation(s)
- Quinn A Conklin
- Center for Mind and Brain, University of California, Davis, 267 Cousteau Place, Davis, CA 95618, United States; Department of Psychology, University of California, Davis, 135 Young Hall, Davis, CA 95616, United States.
| | - Brandon G King
- Center for Mind and Brain, University of California, Davis, 267 Cousteau Place, Davis, CA 95618, United States; Department of Psychology, University of California, Davis, 135 Young Hall, Davis, CA 95616, United States
| | - Anthony P Zanesco
- Center for Mind and Brain, University of California, Davis, 267 Cousteau Place, Davis, CA 95618, United States; Department of Psychology, University of California, Davis, 135 Young Hall, Davis, CA 95616, United States
| | - Jue Lin
- Department of Biochemistry & Biophysics, University of California, San Francisco, 600 16th St, San Francisco, CA 94158, United States
| | - Anahita B Hamidi
- Center for Mind and Brain, University of California, Davis, 267 Cousteau Place, Davis, CA 95618, United States; Center for Neuroscience, University of California, Davis, 1544 Newton Court, Davis, CA 95618, United States
| | - Jennifer J Pokorny
- Center for Mind and Brain, University of California, Davis, 267 Cousteau Place, Davis, CA 95618, United States
| | | | - Marta Cosín-Tomás
- Unit of Pharmacology, Institute of Biomedicine, University of Barcelona, Barcelona 08028, Spain
| | - Colin Huang
- Department of Biochemistry & Biophysics, University of California, San Francisco, 600 16th St, San Francisco, CA 94158, United States
| | - Perla Kaliman
- Center for Mind and Brain, University of California, Davis, 267 Cousteau Place, Davis, CA 95618, United States; Unit of Pharmacology, Institute of Biomedicine, University of Barcelona, Barcelona 08028, Spain
| | - Elissa S Epel
- Department of Psychiatry, University of California, San Francisco, 401 Parnassus Ave, San Francisco, CA 94131, United States
| | - Clifford D Saron
- Center for Mind and Brain, University of California, Davis, 267 Cousteau Place, Davis, CA 95618, United States; MIND Institute, University of California, Davis Medical Center, 2825 50th St, Sacramento, CA 95817, United States
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Dalke C, Neff F, Bains SK, Bright S, Lord D, Reitmeir P, Rößler U, Samaga D, Unger K, Braselmann H, Wagner F, Greiter M, Gomolka M, Hornhardt S, Kunze S, Kempf SJ, Garrett L, Hölter SM, Wurst W, Rosemann M, Azimzadeh O, Tapio S, Aubele M, Theis F, Hoeschen C, Slijepcevic P, Kadhim M, Atkinson M, Zitzelsberger H, Kulka U, Graw J. Lifetime study in mice after acute low-dose ionizing radiation: a multifactorial study with special focus on cataract risk. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2018; 57:99-113. [PMID: 29327260 PMCID: PMC5902533 DOI: 10.1007/s00411-017-0728-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 12/21/2017] [Indexed: 05/28/2023]
Abstract
Because of the increasing application of ionizing radiation in medicine, quantitative data on effects of low-dose radiation are needed to optimize radiation protection, particularly with respect to cataract development. Using mice as mammalian animal model, we applied a single dose of 0, 0.063, 0.125 and 0.5 Gy at 10 weeks of age, determined lens opacities for up to 2 years and compared it with overall survival, cytogenetic alterations and cancer development. The highest dose was significantly associated with increased body weight and reduced survival rate. Chromosomal aberrations in bone marrow cells showed a dose-dependent increase 12 months after irradiation. Pathological screening indicated a dose-dependent risk for several types of tumors. Scheimpflug imaging of the lens revealed a significant dose-dependent effect of 1% of lens opacity. Comparison of different biological end points demonstrated long-term effects of low-dose irradiation for several biological end points.
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Affiliation(s)
- Claudia Dalke
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Developmental Genetics, 85764 Neuherberg, Germany
| | - Frauke Neff
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Pathology, Neuherberg, Germany
- Present Address: Municipal Clinical Center Munich, Munich, Germany
| | - Savneet Kaur Bains
- Department of Life Sciences, Brunel University London, Uxbridge, UK
- Present Address: Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
| | - Scott Bright
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
- Present Address: University of Texas, MD Anderson, Houston, TX USA
| | - Deborah Lord
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
| | - Peter Reitmeir
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Health Economics and Health Care Management, Neuherberg, Germany
| | - Ute Rößler
- Department Radiation Protection and Health, Federal Office for Radiation Protection, Oberschleissheim, Germany
| | - Daniel Samaga
- Department Radiation Protection and Health, Federal Office for Radiation Protection, Oberschleissheim, Germany
- Present Address: Helmholtz Center Munich, German Research Center for Environmental Health, Research Unit of Radiation Cytogenetics, Neuherberg, Germany
| | - Kristian Unger
- Helmholtz Center Munich, German Research Center for Environmental Health, Research Unit of Radiation Cytogenetics, Neuherberg, Germany
| | - Herbert Braselmann
- Helmholtz Center Munich, German Research Center for Environmental Health, Research Unit of Radiation Cytogenetics, Neuherberg, Germany
| | - Florian Wagner
- Helmholtz Center Munich, German Research Center for Environmental Health, Research Unit Medical Radiation Physics and Diagnostics, Neuherberg, Germany
- Present Address: Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Radiation Protection, Neuherberg, Germany
| | - Matthias Greiter
- Helmholtz Center Munich, German Research Center for Environmental Health, Research Unit Medical Radiation Physics and Diagnostics, Neuherberg, Germany
- Present Address: Helmholtz Center Munich, German Research Center for Environmental Health, Individual Monitoring Service, Neuherberg, Germany
| | - Maria Gomolka
- Department Radiation Protection and Health, Federal Office for Radiation Protection, Oberschleissheim, Germany
| | - Sabine Hornhardt
- Department Radiation Protection and Health, Federal Office for Radiation Protection, Oberschleissheim, Germany
| | - Sarah Kunze
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Developmental Genetics, 85764 Neuherberg, Germany
| | - Stefan J. Kempf
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Radiation Biology, Neuherberg, Germany
- Present Address: Department of Bioanalytical Sciences, CSL Behring GmbH, Marburg, Germany
| | - Lillian Garrett
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Developmental Genetics, 85764 Neuherberg, Germany
| | - Sabine M. Hölter
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Developmental Genetics, 85764 Neuherberg, Germany
| | - Wolfgang Wurst
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Developmental Genetics, 85764 Neuherberg, Germany
| | - Michael Rosemann
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Radiation Biology, Neuherberg, Germany
| | - Omid Azimzadeh
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Radiation Biology, Neuherberg, Germany
| | - Soile Tapio
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Radiation Biology, Neuherberg, Germany
| | - Michaela Aubele
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Pathology, Neuherberg, Germany
| | - Fabian Theis
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Computational Biology, Neuherberg, Germany
| | - Christoph Hoeschen
- Helmholtz Center Munich, German Research Center for Environmental Health, Research Unit Medical Radiation Physics and Diagnostics, Neuherberg, Germany
- Present Address: Chair of Medical Systems Technology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | | | - Munira Kadhim
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
| | - Michael Atkinson
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Radiation Biology, Neuherberg, Germany
| | - Horst Zitzelsberger
- Helmholtz Center Munich, German Research Center for Environmental Health, Research Unit of Radiation Cytogenetics, Neuherberg, Germany
| | - Ulrike Kulka
- Department Radiation Protection and Health, Federal Office for Radiation Protection, Oberschleissheim, Germany
| | - Jochen Graw
- Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Developmental Genetics, 85764 Neuherberg, Germany
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228
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Vance MC, Bui E, Hoeppner SS, Kovachy B, Prescott J, Mischoulon D, Walton ZE, Dong M, Nadal MF, Worthington JJ, Hoge EA, Cassano P, Orr EH, Fava M, de Vivo I, Wong KK, Simon NM. Prospective association between major depressive disorder and leukocyte telomere length over two years. Psychoneuroendocrinology 2018; 90:157-164. [PMID: 29499556 PMCID: PMC5864560 DOI: 10.1016/j.psyneuen.2018.02.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 02/08/2018] [Accepted: 02/15/2018] [Indexed: 10/18/2022]
Abstract
BACKGROUND Reduced leukocyte telomere length (LTL) has been found to be associated with multiple common age-related diseases, including heart disease, diabetes, and cancer. A link has also been suggested between shortened LTL and major depressive disorder (MDD), suggesting that MDD may be a disease of accelerated aging. This prospective, longitudinal study examined the association between depression diagnosis at baseline and change in LTL over two years in a well-characterized sample of N = 117 adults with or without MDD at baseline, using rigorous entry criteria. METHODS Participants aged 18-70 were assessed with validated instruments by trained, doctoral-level clinician raters at baseline and at two-year follow-up, and blood samples were obtained at both visits. LTL was assayed under identical methods using quantitative polymerase chain reaction (qPCR). The effect of an MDD diagnosis at baseline on change in LTL over two years was examined via hierarchical mixed models, which included potential confounders. RESULTS Individuals with MDD at baseline had greater LTL shortening over two years than individuals without MDD (p = 0.03), even after controlling for differences in age, sex, and body mass index (BMI). In the sub-sample of individuals with MDD diagnoses at baseline, no significant associations between LTL change and symptom severity or duration were found. CONCLUSION A baseline diagnosis of MDD prospectively predicted LTL shortening over two years. Our results provide further support for MDD as a disease associated with accelerated aging in a well-characterized sample using validated, clinician-rated measures.
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Affiliation(s)
- Mary C. Vance
- University of Michigan,VA Ann Arbor Healthcare System
| | - Eric Bui
- Massachusetts General Hospital,Harvard Medical School
| | | | | | | | | | | | | | | | | | | | - Paolo Cassano
- Massachusetts General Hospital,Harvard Medical School
| | | | - Maurizio Fava
- Massachusetts General Hospital,Harvard Medical School
| | | | - Kwok-Kin Wong
- Harvard Medical School,Dana Farber Cancer Institute,New York University Medical School
| | - Naomi M. Simon
- Massachusetts General Hospital,Harvard Medical School,New York University Medical School
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229
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Bateson M, Nettle D. Why are there associations between telomere length and behaviour? Philos Trans R Soc Lond B Biol Sci 2018; 373:20160438. [PMID: 29335363 PMCID: PMC5784059 DOI: 10.1098/rstb.2016.0438] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2017] [Indexed: 12/30/2022] Open
Abstract
Individual differences in telomere length are associated with individual differences in behaviour in humans and birds. Within the human epidemiological literature this association is assumed to result from specific behaviour patterns causing changes in telomere dynamics. We argue that selective adoption-the hypothesis that individuals with short telomeres are more likely to adopt specific behaviours-is an alternative worthy of consideration. Selective adoption could occur either because telomere length directly affects behaviour or because behaviour and telomere length are both affected by a third variable, such as exposure to early-life adversity. We present differential predictions of the causation and selective adoption hypotheses and describe how these could be tested with longitudinal data on telomere length. Crucially, if behaviour is causal then it should be associated with differential rates of telomere attrition. Using smoking behaviour as an example, we show that the evidence that smoking accelerates the rate of telomere attrition within individuals is currently weak. We conclude that the selective adoption hypothesis for the association between behaviour and telomere length is both mechanistically plausible and, if anything, more compatible with existing empirical evidence than the hypothesis that behaviour is causal.This article is part of the theme issue 'Understanding diversity in telomere dynamics'.
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Affiliation(s)
- Melissa Bateson
- Centre for Behaviour and Evolution and Institute of Neuroscience, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Daniel Nettle
- Centre for Behaviour and Evolution and Institute of Neuroscience, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
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230
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Entringer S, de Punder K, Buss C, Wadhwa PD. The fetal programming of telomere biology hypothesis: an update. Philos Trans R Soc Lond B Biol Sci 2018; 373:20170151. [PMID: 29335381 PMCID: PMC5784074 DOI: 10.1098/rstb.2017.0151] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2017] [Indexed: 12/17/2022] Open
Abstract
Research on mechanisms underlying fetal programming of health and disease risk has focused primarily on processes that are specific to cell types, organs or phenotypes of interest. However, the observation that developmental conditions concomitantly influence a diverse set of phenotypes, the majority of which are implicated in age-related disorders, raises the possibility that such developmental conditions may additionally exert effects via a common underlying mechanism that involves cellular/molecular ageing-related processes. In this context, we submit that telomere biology represents a process of particular interest in humans because, firstly, this system represents among the most salient antecedent cellular phenotypes for common age-related disorders; secondly, its initial (newborn) setting appears to be particularly important for its long-term effects; and thirdly, its initial setting appears to be plastic and under developmental regulation. We propose that the effects of suboptimal intrauterine conditions on the initial setting of telomere length and telomerase expression/activity capacity may be mediated by the programming actions of stress-related maternal-placental-fetal oxidative, immune, endocrine and metabolic pathways in a manner that may ultimately accelerate cellular dysfunction, ageing and disease susceptibility over the lifespan. This perspectives paper provides an overview of each of the elements underlying this hypothesis, with an emphasis on recent developments, findings and future directions.This article is part of the theme issue 'Understanding diversity in telomere dynamics'.
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Affiliation(s)
- Sonja Entringer
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institute of Medical Psychology, Berlin, Germany
- Department of Pediatrics, University of California, School of Medicine, Irvine, CA, USA
- Development, Health and Disease Research Program, University of California, School of Medicine, Irvine, CA, USA
| | - Karin de Punder
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institute of Medical Psychology, Berlin, Germany
| | - Claudia Buss
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institute of Medical Psychology, Berlin, Germany
- Department of Pediatrics, University of California, School of Medicine, Irvine, CA, USA
- Development, Health and Disease Research Program, University of California, School of Medicine, Irvine, CA, USA
| | - Pathik D Wadhwa
- Department of Psychiatry and Human Behavior, University of California, School of Medicine, Irvine, CA, USA
- Department of Obstetrics and Gynecology, University of California, School of Medicine, Irvine, CA, USA
- Department of Pediatrics, University of California, School of Medicine, Irvine, CA, USA
- Department of Epidemiology, University of California, School of Medicine, Irvine, CA, USA
- Development, Health and Disease Research Program, University of California, School of Medicine, Irvine, CA, USA
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Zhou J, Wang J, Shen Y, Yang Y, Huang P, Chen S, Zou C, Dong B. The association between telomere length and frailty: A systematic review and meta-analysis. Exp Gerontol 2018. [PMID: 29518479 DOI: 10.1016/j.exger.2018.02.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Several studies have examined the association between telomere length and frailty, but results from these studies are contradictory. Therefore, we conducted a systematic review and meta-analysis to examine the association between telomere length and frailty. METHODS We searched the literature in Ovid (MEDLINE), Embase, PubMed, Web of Knowledge and Cochrane databases in July 2017 for studies evaluating the association of telomere length and the risk of frailty. RESULTS A total of 5 studies (3268 participants) were eligible in our study. The prevalence of frailty ranged from 5.4% to 51.1%. The pooled mean difference of telomere length for the non-frail versus frail was 0.06 (95% CI: -0.01, 0.13), suggesting that no significant association was found between telomere length and frailty. In addition, the subgroup analysis indicated that telomere length was not significantly associated with the risk of frailty in all gender groups. Similar results were also found when frailty was defined by the Fried criteria (mean difference = 0.07, 95% CI: -0.03, 0.16) and frailty index (mean difference = -0.02, 95% CI: -0.05, 0.01), but not by the frailty scale (mean difference = 0.18, 95% CI: 0.04, 0.32). CONCLUSION Telomere length is not associated with the risk of frailty. Well-designed prospective studies are needed to evaluate further whether telomere length is a meaningful biological marker for frailty.
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Affiliation(s)
- Jianghua Zhou
- Geriatrics Department, Chengdu Fifth People's Hospital, Chengdu, China; Chengdu-Montpellier Geriatric Research Center, China
| | - Jiang Wang
- Department of medicine, Jinggangshan University, Ji'an, China
| | | | - Ying Yang
- Geriatrics Department, Chengdu Fifth People's Hospital, Chengdu, China; Chengdu-Montpellier Geriatric Research Center, China
| | - Pan Huang
- West China Hospital, Sichuan University, China
| | - Shanping Chen
- Geriatrics Department, Chengdu Fifth People's Hospital, Chengdu, China; Chengdu-Montpellier Geriatric Research Center, China
| | - Chuan Zou
- Geriatrics Department, Chengdu Fifth People's Hospital, Chengdu, China; Chengdu-Montpellier Geriatric Research Center, China
| | - Birong Dong
- The Center of Gerontology and Geriatrics, West China Hospital, Sichuan University, China; Collaborative Innovation Center of Sichuan for Elderly Care and Health, Chengdu, China.
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232
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Rajeevan MS, Murray J, Oakley L, Lin JMS, Unger ER. Association of chronic fatigue syndrome with premature telomere attrition. J Transl Med 2018; 16:44. [PMID: 29486769 PMCID: PMC5830066 DOI: 10.1186/s12967-018-1414-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 02/16/2018] [Indexed: 12/21/2022] Open
Abstract
Background Chronic fatigue syndrome (CFS), also known as myalgic encephalomyelitis (ME), is a severely debilitating condition of unknown etiology. The symptoms and risk factors of ME/CFS share features of accelerated aging implicated in several diseases. Using telomere length as a marker, this study was performed to test the hypothesis that ME/CFS is associated with accelerated aging. Methods Participant (n = 639) data came from the follow-up time point of the Georgia CFS surveillance study. Using the 1994 CFS Research Case Definition with questionnaire-based subscale thresholds for fatigue, function, and symptoms, participants were classified into four illness groups: CFS if all criteria were met (n = 64), CFS-X if CFS with exclusionary conditions (n = 77), ISF (insufficient symptoms/fatigue) if only some criteria were met regardless of exclusionary conditions (n = 302), and NF (non-fatigued) if no criteria and no exclusionary conditions (n = 196). Relative telomere length (T/S ratio) was measured using DNA from whole blood and real-time PCR. General linear models were used to estimate the association of illness groups or T/S ratio with demographics, biological measures and covariates with significance set at p < 0.05. Results The mean T/S ratio differed significantly by illness group (p = 0.0017); the T/S ratios in CFS (0.90 ± 0.03) and ISF (0.94 ± 0.02) were each significantly lower than in NF (1.06 ± 0.04). Differences in T/S ratio by illness groups remained significant after adjustment for covariates of age, sex, body mass index, waist–hip ratio, post-exertional malaise and education attainment. Telomere length was shorter by 635, 254 and 424 base pairs in CFS, CFS-X and ISF, respectively, compared to NF. This shorter telomere length translates to roughly 10.1–20.5, 4.0–8.2 and 6.6–13.7 years of additional aging in CFS, CFS-X and ISF compared to NF respectively. Further, stratified analyses based on age and sex demonstrated that the association of ME/CFS with short telomeres is largely moderated by female subjects < 45 years old. Conclusions This study found a significant association of ME/CFS with premature telomere attrition that is largely moderated by female subjects < 45 years old. Our results indicate that ME/CFS could be included in the list of conditions associated with accelerated aging. Further work is needed to evaluate the functional significance of accelerated aging in ME/CFS. Electronic supplementary material The online version of this article (10.1186/s12967-018-1414-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mangalathu S Rajeevan
- Division of High-Consequence Pathogens & Pathology, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA, 30329, USA.
| | - Janna Murray
- Division of High-Consequence Pathogens & Pathology, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA, 30329, USA.,Influenza Division, Centers for Disease Control and Prevention, Atlanta, USA
| | - Lisa Oakley
- Division of High-Consequence Pathogens & Pathology, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA, 30329, USA.,College of Public Health and Human Services, Oregon State University, Corvallis, USA
| | - Jin-Mann S Lin
- Division of High-Consequence Pathogens & Pathology, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA, 30329, USA
| | - Elizabeth R Unger
- Division of High-Consequence Pathogens & Pathology, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA, 30329, USA
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233
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Leukocyte telomere length in paediatric critical illness: effect of early parenteral nutrition. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2018; 22:38. [PMID: 29463275 PMCID: PMC5820800 DOI: 10.1186/s13054-018-1972-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 01/31/2018] [Indexed: 12/20/2022]
Abstract
Background Children who have suffered from critical illnesses that required treatment in a paediatric intensive care unit (PICU) have long-term physical and neurodevelopmental impairments. The mechanisms underlying this legacy remain largely unknown. In patients suffering from chronic diseases hallmarked by inflammation and oxidative stress, poor long-term outcome has been associated with shorter telomeres. Shortened telomeres have also been reported to result from excessive food consumption and/or unhealthy nutrition. We investigated whether critically ill children admitted to the PICU have shorter-than-normal telomeres, and whether early parenteral nutrition (PN) independently affects telomere length when adjusting for known determinants of telomere length. Methods Telomere length was quantified in leukocyte DNA from 342 healthy children and from 1148 patients who had been enrolled in the multicenter, randomised controlled trial (RCT), PEPaNIC. These patients were randomly allocated to initiation of PN within 24 h (early PN) or to withholding PN for one week in PICU (late PN). The impact of early PN versus late PN on the change in telomere length from the first to last PICU-day was investigated with multivariable linear regression analyses. Results Leukocyte telomeres were 6% shorter than normal upon PICU admission (median 1.625 (IQR 1.446–1.825) telomere/single-copy-gene ratio (T/S) units vs. 1.727 (1.547–1.915) T/S-units in healthy children (P < 0.0001)). Adjusted for potential baseline determinants and leukocyte composition, early PN was associated with telomere shortening during PICU stay as compared with late PN (estimate early versus late PN –0.021 T/S-units, 95% CI −0.038; 0.004, P = 0.01). Other independent determinants of telomere length identified in this model were age, gender, baseline telomere length and fraction of neutrophils in the sample from which the DNA was extracted. Telomere shortening with early PN was independent of post-randomisation factors affected by early PN, including longer length of PICU stay, larger amounts of insulin and higher risk of infection. Conclusions Shorter than normal leukocyte telomeres are present in critically ill children admitted to the PICU. Early initiation of PN further shortened telomeres, an effect that was independent of other determinants. Whether such telomere-shortening predisposes to long-term consequences of paediatric critical illness should be further investigated in a prospective follow-up study. Trial registration ClinicalTrials.gov, NCT01536275. Registered on 16 February 2012. Electronic supplementary material The online version of this article (10.1186/s13054-018-1972-6) contains supplementary material, which is available to authorized users.
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234
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Affiliation(s)
- Sara Hägg
- From the Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
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235
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Ajaykumar A, Soudeyns H, Kakkar F, Brophy J, Bitnun A, Alimenti A, Albert AYK, Money DM, Côté HCF. Leukocyte Telomere Length at Birth and During the Early Life of Children Exposed to but Uninfected With HIV After In Utero Exposure to Antiretrovirals. J Infect Dis 2018; 217:710-720. [PMID: 29228317 PMCID: PMC5853286 DOI: 10.1093/infdis/jix618] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 12/04/2017] [Indexed: 12/20/2022] Open
Abstract
Background Maternal combination antiretroviral therapy (cART) during pregnancy could impact the health of human immunodeficiency virus (HIV)-exposed, HIV-uninfected (HEU) children, because some antiretrovirals cross the placenta and can inhibit telomerase. Our objective was to compare leukocyte telomere length (LTL) in HEU children and HIV-unexposed, HIV-uninfected (HUU) children at birth and in early life and to investigate any relationship with cART exposure. Methods HEU and HUU children's blood LTL was compared cross-sectionally at birth, and during the first three years of life. Longitudinal HEU LTL dynamics was evaluated over that same period. Results At birth, the LTL in HEU children (n = 114) was not shorter than that in HUU children (n = 86), but female infants had longer LTL than male infants. Maternal cART (duration or type) showed no association with shorter infant LTL. Among 214 HEU children age- and sex-matched at a 1:1 ratio to HUU children, LTL declined similarly in both groups. In a longitudinal analysis, LTL attrition in HEU children was rapid from birth to 1 year of age and gradual thereafter. Zidovudine prophylaxis did not significantly alter LTL. Conclusions Our results indicate that from birth to 3 years of age, the LTL in HEU children is not negatively affected by exposure to maternal HIV infection and cART, at least not to the regimens used within this Canadian cohort, a reassuring finding.
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Affiliation(s)
- Abhinav Ajaykumar
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
- Centre for Blood Research, University of British Columbia, Vancouver, Canada
| | - Hugo Soudeyns
- Unité d’immunopathologie virale, Centre de Recherche du CHU Sainte-Justine, Montreal, Canada
- Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montreal, Canada
| | - Fatima Kakkar
- Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, Canada
| | - Jason Brophy
- Department of Pediatrics, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Canada
| | - Ari Bitnun
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Ariane Alimenti
- Department of Pediatrics, University of British Columbia, Vancouver, Canada
- BC Women’s Hospital and Health Centre, Vancouver, Canada
| | - Arianne Y K Albert
- BC Women’s Hospital and Health Centre, Vancouver, Canada
- Women’s Health Research Institute, Vancouver, Canada
| | - Deborah M Money
- Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, Canada
- BC Women’s Hospital and Health Centre, Vancouver, Canada
- Women’s Health Research Institute, Vancouver, Canada
| | - Hélène C F Côté
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
- Centre for Blood Research, University of British Columbia, Vancouver, Canada
- Women’s Health Research Institute, Vancouver, Canada
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236
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Ward-Caviness CK, Nwanaji-Enwerem JC, Wolf K, Wahl S, Colicino E, Trevisi L, Kloog I, Just AC, Vokonas P, Cyrys J, Gieger C, Schwartz J, Baccarelli AA, Schneider A, Peters A. Long-term exposure to air pollution is associated with biological aging. Oncotarget 2018; 7:74510-74525. [PMID: 27793020 PMCID: PMC5342683 DOI: 10.18632/oncotarget.12903] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 10/13/2016] [Indexed: 11/28/2022] Open
Abstract
Long-term exposure to air pollution is associated with age-related diseases. We explored the association between accelerated biological aging and air pollution, a potential mechanism linking air pollution and health. We estimated long-term exposure to PM10, PM2.5, PM2.5 absorbance/black carbon (BC), and NOx via land-use regression models in individuals from the KORA F4 cohort. Accelerated biological aging was assessed using telomere length (TeloAA) and three epigenetic measures: DNA methylation age acceleration (DNAmAA), extrinsic epigenetic age acceleration (correlated with immune cell counts, EEAA), and intrinsic epigenetic age acceleration (independent of immune cell counts, IEAA). We also investigated sex-specific associations between air pollution and biological aging, given the published association between sex and aging measures. In KORA an interquartile range (0.97 μg/m3) increase in PM2.5 was associated with a 0.33 y increase in EEAA (CI = 0.01, 0.64; P = 0.04). BC and NOx (indicators or traffic exposure) were associated with DNAmAA and IEAA in women, while TeloAA was inversely associated with BC in men. We replicated this inverse BC-TeloAA association in the Normative Aging Study, a male cohort based in the USA. A multiple phenotype analysis in KORA F4 combining all aging measures showed that BC and PM10 were broadly associated with biological aging in men. Thus, we conclude that long-term exposure to air pollution is associated with biological aging measures, potentially in a sex-specific manner. However, many of the associations were relatively weak and further replication of overall and sex-specific associations is warranted.
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Affiliation(s)
- Cavin K Ward-Caviness
- Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Bavaria, Germany
| | | | - Kathrin Wolf
- Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Bavaria, Germany
| | - Simone Wahl
- Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Bavaria, Germany.,Research Unit Molecular Epidemiology, Helmholtz Zentrum München, Neuherberg, Bavaria, Germany
| | - Elena Colicino
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Letizia Trevisi
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA
| | - Itai Kloog
- Department of Geography and Environmental Development, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Allan C Just
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Pantel Vokonas
- VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Josef Cyrys
- Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Bavaria, Germany
| | - Christian Gieger
- Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Bavaria, Germany.,Research Unit Molecular Epidemiology, Helmholtz Zentrum München, Neuherberg, Bavaria, Germany
| | - Joel Schwartz
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Andrea A Baccarelli
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Alexandra Schneider
- Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Bavaria, Germany
| | - Annette Peters
- Institute of Epidemiology II, Helmholtz Zentrum München, Neuherberg, Bavaria, Germany
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237
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Marioni RE, Harris SE, Shah S, McRae AF, von Zglinicki T, Martin-Ruiz C, Wray NR, Visscher PM, Deary IJ. The epigenetic clock and telomere length are independently associated with chronological age and mortality. Int J Epidemiol 2018; 45:424-432. [PMID: 27075770 PMCID: PMC4864882 DOI: 10.1093/ije/dyw041] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2015] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Telomere length and DNA methylation have been proposed as biological clock measures that track chronological age. Whether they change in tandem, or contribute independently to the prediction of chronological age, is not known. METHODS We address these points using data from two Scottish cohorts: the Lothian Birth Cohorts of 1921 (LBC1921) and 1936 (LBC1936). Telomere length and epigenetic clock estimates from DNA methylation were measured in 920 LBC1936 participants (ages 70, 73 and 76 years) and in 414 LBC1921 participants (ages 79, 87 and 90 years). RESULTS The epigenetic clock changed over time at roughly the same rate as chronological age in both cohorts. Telomere length decreased at 48-67 base pairs per year on average. Weak, non-significant correlations were found between epigenetic clock estimates and telomere length. Telomere length explained 6.6% of the variance in age in LBC1921, the epigenetic clock explained 10.0%, and combined they explained 17.3% (allP< 1 × 10-7). Corresponding figures for the LBC1936 cohort were 14.3%, 11.7% and 19.5% (allP< 1 × 10-12). In a combined cohorts analysis, the respective estimates were 2.8%, 28.5% and 29.5%. Also in a combined cohorts analysis, a one standard deviation increase in baseline epigenetic age was linked to a 22% increased mortality risk (P= 2.6 × 10-4) whereas, in the same model, a one standard deviation increase in baseline telomere length was independently linked to an 11% decreased mortality risk (P= 0.06). CONCLUSIONS These results suggest that telomere length and epigenetic clock estimates are independent predictors of chronological age and mortality risk.
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Affiliation(s)
- Riccardo E Marioni
- Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK Medical Genetics Section, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Sarah E Harris
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK Medical Genetics Section, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Sonia Shah
- Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia The University of Queensland Diamantina Institute, Translational Research Institute, University of Queensland, Brisbane, QLD, Australia
| | - Allan F McRae
- Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia The University of Queensland Diamantina Institute, Translational Research Institute, University of Queensland, Brisbane, QLD, Australia
| | - Thomas von Zglinicki
- Institute for Cell & Molecular Biosciences, Newcastle University Institute for Ageing, University of Newcastle, Newcastle, UK
| | - Carmen Martin-Ruiz
- Institute of Neurosciences, NIHR Newcastle Biomedical Research Centre & Unit, Newcastle University Institute for Ageing, University of Newcastle, Newcastle, UK
| | - Naomi R Wray
- Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia
| | - Peter M Visscher
- Queensland Brain Institute, University of Queensland, Brisbane, QLD, Australia Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK The University of Queensland Diamantina Institute, Translational Research Institute, University of Queensland, Brisbane, QLD, Australia
| | - Ian J Deary
- Department of Psychology, University of Edinburgh, Edinburgh, UK
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238
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Zgheib NK, Sleiman F, Nasreddine L, Nasrallah M, Nakhoul N, Isma'eel H, Tamim H. Short Telomere Length is Associated with Aging, Central Obesity, Poor Sleep and Hypertension in Lebanese Individuals. Aging Dis 2018; 9:77-89. [PMID: 29392083 PMCID: PMC5772860 DOI: 10.14336/ad.2017.0310] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 03/10/2017] [Indexed: 12/20/2022] Open
Abstract
In Lebanon, data stemming from national cross-sectional surveys indicated significant increasing trends in the prevalence of cardiovascular diseases and associated behavioral and age-related risk factors. To our knowledge, no data are available on relative telomere length (RTL) as a potential biomarker for age-related diseases in a Lebanese population. The aim of this study was to evaluate whether there is an association between RTL and demographic characteristics, lifestyle habits and diseases in the Lebanese. This was a cross-sectional study of 497 Lebanese subjects. Peripheral blood RTL was measured by amplifying telomere and single copy gene using real-time PCR. Mean ± SD RTL was 1.42 ± 0.83, and it was categorized into 3 tertiles. Older age (P=0.002) and wider waist circumference (WC) (P=0.001) were statistically significantly associated with shorter RTL. Multinomial logistic regression showed that subjects who had some level of sleeping difficulty had a statistically significantly shorter RTL when compared to those with no sleeping difficulties at all [OR (95% CI): 2.01 (1.11-3.62) in the first RTL tertile]. Importantly, statistically significantly shorter RTL was found with every additional 10 cm of WC [OR (95% CI): 1.30 (1.11-1.52) for first RTL tertile]. In addition, and after performing the multivariate logistic regression and adjusting for “predictors” of RTL, the odds of having hypertension or being treated for hypertension were higher in patients who had shorter RTL: OR (95% CI): 2.45 (1.36-4.44) and 2.28 (1.22-4.26) in the first RTL tertiles respectively with a similar trend, though not statistically significant, in the second RTL tertiles. This is the first study in Lebanon to show an association between age, central obesity, poor sleep and hypertension and RTL. It is hoped that telomere length measurement be potentially used as a biomarker for biological age and age-related diseases and progression in the Lebanese.
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Affiliation(s)
- Nathalie K Zgheib
- 1Department of Pharmacology & Toxicology, Faculty of Medicine, American University of Beirut, Lebanon
| | - Fatima Sleiman
- 1Department of Pharmacology & Toxicology, Faculty of Medicine, American University of Beirut, Lebanon
| | - Lara Nasreddine
- 2Department of Nutrition & Food Sciences, Faculty of Agriculture and Food Sciences, American University of Beirut, Lebanon
| | - Mona Nasrallah
- 3Department of Internal Medicine, Faculty of Medicine, American University of Beirut Medical Center, Lebanon
| | - Nancy Nakhoul
- 3Department of Internal Medicine, Faculty of Medicine, American University of Beirut Medical Center, Lebanon
| | - Hussain Isma'eel
- 3Department of Internal Medicine, Faculty of Medicine, American University of Beirut Medical Center, Lebanon
| | - Hani Tamim
- 3Department of Internal Medicine, Faculty of Medicine, American University of Beirut Medical Center, Lebanon.,4Clinical Research Institute, Faculty of Medicine, American University of Beirut Medical Center, Lebanon
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239
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Rollings N, Uhrig EJ, Krohmer RW, Waye HL, Mason RT, Olsson M, Whittington CM, Friesen CR. Age-related sex differences in body condition and telomere dynamics of red-sided garter snakes. Proc Biol Sci 2018; 284:rspb.2016.2146. [PMID: 28381620 DOI: 10.1098/rspb.2016.2146] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 03/06/2017] [Indexed: 12/15/2022] Open
Abstract
Life-history strategies vary dramatically between the sexes, which may drive divergence in sex-specific senescence and mortality rates. Telomeres are tandem nucleotide repeats that protect the ends of chromosomes from erosion during cell division. Telomeres have been implicated in senescence and mortality because they tend to shorten with stress, growth and age. We investigated age-specific telomere length in female and male red-sided garter snakes, Thamnophis sirtalis parietalis We hypothesized that age-specific telomere length would differ between males and females given their divergent reproductive strategies. Male garter snakes emerge from hibernation with high levels of corticosterone, which facilitates energy mobilization to fuel mate-searching, courtship and mating behaviours during a two to four week aphagous breeding period at the den site. Conversely, females remain at the dens for only about 4 days and seem to invest more energy in growth and cellular maintenance, as they usually reproduce biennially. As male investment in reproduction involves a yearly bout of physiologically stressful activities, while females prioritize self-maintenance, we predicted male snakes would experience more age-specific telomere loss than females. We investigated this prediction using skeletochronology to determine the ages of individuals and qPCR to determine telomere length in a cross-sectional study. For both sexes, telomere length was positively related to body condition. Telomere length decreased with age in male garter snakes, but remained stable in female snakes. There was no correlation between telomere length and growth in either sex, suggesting that our results are a consequence of divergent selection on life histories of males and females. Different selection on the sexes may be the physiological consequence of the sexual dimorphism and mating system dynamics displayed by this species.
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Affiliation(s)
- Nicky Rollings
- School of Life and Environmental Sciences, University of Sydney, Heydon-Laurence Building (A08), New South Wales 2006, Australia
| | - Emily J Uhrig
- Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden.,Department of Integrative Biology, Oregon State University, Corvallis, OR, USA
| | - Randolph W Krohmer
- Department of Biological Sciences, Saint Xavier University, Chicago, IL, USA
| | - Heather L Waye
- Division of Science and Mathematics, University of Minnesota, Morris, MN, USA
| | - Robert T Mason
- Department of Integrative Biology, Oregon State University, Corvallis, OR, USA
| | - Mats Olsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Camilla M Whittington
- School of Life and Environmental Sciences, University of Sydney, Heydon-Laurence Building (A08), New South Wales 2006, Australia.,Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Sydney, Australia
| | - Christopher R Friesen
- School of Life and Environmental Sciences, University of Sydney, Heydon-Laurence Building (A08), New South Wales 2006, Australia
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240
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Martens DS, Nawrot TS. Air Pollution Stress and the Aging Phenotype: The Telomere Connection. Curr Environ Health Rep 2018; 3:258-69. [PMID: 27357566 DOI: 10.1007/s40572-016-0098-8] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Aging is a complex physiological phenomenon. The question why some subjects grow old while remaining free from disease whereas others prematurely die remains largely unanswered. We focus here on the role of air pollution in biological aging. Hallmarks of aging can be grouped into three main categories: genomic instability, telomere attrition, and epigenetic alterations leading to altered mitochondrial function and cellular senescence. At birth, the initial telomere length of a person is largely determined by environmental factors. Telomere length shortens with each cell division and exposure to air pollution as well as low residential greens space exposure is associated with shorter telomere length. Recent studies show that the estimated effects of particulate air pollution exposure on the telomere mitochondrial axis of aging may play an important role in chronic health effects of air pollution. The exposome encompasses all exposures over an entire life. As telomeres can be considered as the cellular memories of exposure to oxidative stress and inflammation, telomere maintenance may be a proxy for assessing the "exposome". If telomeres are causally related to the aging phenotype and environmental air pollution is an important determinant of telomere length, this might provide new avenues for future preventive strategies.
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Affiliation(s)
- Dries S Martens
- Centre for Environmental Sciences, Hasselt University, 3500, Hasselt, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, 3500, Hasselt, Belgium. .,Department of Public Health & Primary Care, Leuven University, 3000, Leuven, Belgium.
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Verhulst S, Susser E, Factor-Litvak PR, Simons M, Benetos A, Steenstrup T, Kark JD, Aviv A. Response to: Reliability and validity of telomere length measurements. Int J Epidemiol 2018; 45:1298-1301. [PMID: 27880696 PMCID: PMC6068938 DOI: 10.1093/ije/dyw194] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Simon Verhulst
- Groningen Institute for Evolutionary Life Sciences University of Groningen, Groningen, The Netherland
| | - Ezra Susser
- Imprints Center for Genetic and Environmental Lifecourse Studies, Columbia University Mailman School of Public Health, and New York State Psychiatric Institute, New York, NY, USA
| | - Pam R Factor-Litvak
- Department of Epidemiology, Columbia University Mailman School of Public Health New York, NY, USA
| | - Mirre Simons
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK
| | - Athanase Benetos
- Département de Médecine Gériatrique, CHU de Nancy, and INSERM, U1116, Vandoeuvre-les-Nancy, France
| | | | - Jeremy D Kark
- Hebrew University-Hadassah School of Public Health and Community Medicine, Jerusalem, Israel
| | - Abraham Aviv
- Center of Human Development and Aging, State University of New Jersey, Newark, NJ, USA
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242
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Validation of quantitative polymerase chain reaction with Southern blot method for telomere length analysis. Future Sci OA 2018; 4:FSO282. [PMID: 29682317 PMCID: PMC5905642 DOI: 10.4155/fsoa-2017-0115] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 12/20/2017] [Indexed: 11/17/2022] Open
Abstract
Aim: Telomere length (TL) measurement by quantitative polymerase chain reaction (PCR) has been widely accepted, but limited information regarding its validation with a gold-standard technique is available. Materials & methods: We measured TL by Southern blot and monochrome multiplex quantitative PCR (MMqPCR) and validated the results of TL in leukocytes of 94 participants with mean age 43.2 years, BMI 19–41 (mean 27.8 ± 4.3) kg/m2. Results: A significant positive correlation was observed between TL measured by MMqPCR and Southern blot assay (correlation coefficient r = +0.896, p < 0.0001). The inter- and intra-assay CVs of the MMqPCR assay were 5.3 and 4.07%, respectively. Conclusion: We observed that experimental discrepancies have an impact on TL analysis and there is a need to improve the optimum conditions. The aim of this study was to validate the relative telomere length measurements by different methods. We measured leukocyte telomere lengths by Southern blot and monochrome multiplex quantitative polymerase chain reaction in 94 participants and a strong correlation was shown between both techniques. The results of our study suggest that the monochrome multiplex quantitative polymerase chain reaction method can be employed reliably for measurement of telomere length in epidemiological studies involving a large number of samples.
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243
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Atamna H, Tenore A, Lui F, Dhahbi JM. Organ reserve, excess metabolic capacity, and aging. Biogerontology 2018; 19:171-184. [PMID: 29335816 DOI: 10.1007/s10522-018-9746-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 01/09/2018] [Indexed: 12/21/2022]
Abstract
"Organ reserve" refers to the ability of an organ to successfully return to its original physiological state following repeated episodes of stress. Clinical evidence shows that organ reserve correlates with the ability of older adults to cope with an added workload or stress, suggesting a role in the process of aging. Although organ reserve is well documented clinically, it is not clearly defined at the molecular level. Interestingly, several metabolic pathways exhibit excess metabolic capacities (e.g., bioenergetics pathway, antioxidants system, plasticity). These pathways comprise molecular components that have an excess of quantity and/or activity than that required for basic physiological demand in vivo (e.g., mitochondrial complex IV or glycolytic enzymes). We propose that the excess in mtDNA copy number and tandem DNA repeats of telomeres are additional examples of intrinsically embedded structural components that could comprise excess capacity. These excess capacities may grant intermediary metabolism the ability to instantly cope with, or manage, added workload or stress. Therefore, excess metabolic capacities could be viewed as an innate mechanism of adaptability that substantiates organ reserve and contributes to the cellular defense systems. If metabolic excess capacities or organ reserves are impaired or exhausted, the ability of the cell to cope with stress is reduced. Under these circumstances cell senescence, transformation, or death occurs. In this review, we discuss excess metabolic and structural capacities as integrated metabolic pathways in relation to organ reserve and cellular aging.
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Affiliation(s)
- Hani Atamna
- School of Medicine, California University of Science and Medicine (CUSM), 217 E Club Center Dr. Suite A, San Bernardino, CA, 92408, USA.
- California Northstate University, College of Medicine, Elk Grove, CA, USA.
| | - Alfred Tenore
- School of Medicine, California University of Science and Medicine (CUSM), 217 E Club Center Dr. Suite A, San Bernardino, CA, 92408, USA
- California Northstate University, College of Medicine, Elk Grove, CA, USA
| | - Forshing Lui
- School of Medicine, California University of Science and Medicine (CUSM), 217 E Club Center Dr. Suite A, San Bernardino, CA, 92408, USA
- California Northstate University, College of Medicine, Elk Grove, CA, USA
| | - Joseph M Dhahbi
- School of Medicine, California University of Science and Medicine (CUSM), 217 E Club Center Dr. Suite A, San Bernardino, CA, 92408, USA
- California Northstate University, College of Medicine, Elk Grove, CA, USA
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244
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Gender-specific associations between quality of life and leukocyte telomere length. Maturitas 2018; 107:68-70. [DOI: 10.1016/j.maturitas.2017.10.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 09/20/2017] [Accepted: 10/09/2017] [Indexed: 11/20/2022]
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245
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Lin Z, Gao H, Wang B, Wang Y. Dietary Copper Intake and Its Association With Telomere Length: A Population Based Study. Front Endocrinol (Lausanne) 2018; 9:404. [PMID: 30105003 PMCID: PMC6077216 DOI: 10.3389/fendo.2018.00404] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 06/29/2018] [Indexed: 11/22/2022] Open
Abstract
Background: Telomere is regarded as the fundamental aspect of cellular aging and copper is recognized as one of the most essential trace elements. The role of dietary copper intake in telomere length maintenance is seldom examined. This study aims to investigate if telomere length is to be associated with daily dietary copper intake. Methods: We used epidemiological data from a large national population-based health and nutrition survey. Dietary intake was assessed during the 24-h period before the interview date when blood sample was collected. Telomere length was measured from blood leukocyte using PCR method. The relationship between telomere length and dietary copper intake was assessed using multivariable linear regression models. We also examined if obesity, measured by body mass index, could modify the observed association. Results: There are 7,324 participants had both leukocyte telomere length measured and dietary copper intake assessed, around 48.0% of them were men. Telomere length was longer in women than that in men (1.05 ± 0.26 vs. 1.00 ± 0.26 T/S ratio), while dietary copper intake was less in women than that in men (1.12 ± 0.80 vs. 1.51 ± 1.61 mg). After controlling for age, sex, ethnicity, physical activity, current smoking status, hypertension, cardiovascular diseases, and body mass index in the multivariable linear regression models, one unit increase of log-transformed dietary copper intake was significantly associated with longer telomere length (β = 0.02, 95% confidence interval: 0.01, 0.04). We did not find a significant sex difference for this association. Conclusions: Dietary copper intake was significantly associated telomere length.The role of copper in human health might be involved in biological aging process.
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246
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Zhang WG, Jia LP, Ma J, Zhu SY, Nie SS, Song KK, Liu XM, Zhang YP, Cao D, Yang XP, Zhao DL, Xiu MJ, Lin L, Li ZX, Huang Q, Chen XZ, Chen L, Wang P, Bai XJ, Feng Z, Fu B, Hunag J, Zhang JP, Cai GY, Sun XF, Chen XM. Peripheral Blood Leukocyte Telomere Length Is Associated with Age but Not Renal Function: A Cross-Sectional Follow-Up Study. J Nutr Health Aging 2018; 22:276-281. [PMID: 29380856 DOI: 10.1007/s12603-017-0905-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES We aimed to evaluate the relationship between baseline renal function and changes in telomere length in Han Chinese. METHODS The telomere restriction fragment (TRF) length of leukocytes in the peripheral blood was measured in healthy volunteers recruited in 2014. The estimated glomerular filtration rate (eGFR) was calculated based on serum creatinine (Scr) and serum cystatin C (CysC)-eGFRcys and eGFRScr-cys through the Cockcroft-Gault formula (eGFRC-G) or the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI / eGFRCKD-EPI) equation. The correlation between telomere length changes over time and renal function was analyzed. RESULTS Leukocyte TRF lengths were negatively correlated to age (r = -0.393, p < 0.001) and serum CysC (r = -0.180, p < 0.01), while positively associated with eGFRCKD-EPI, eGFRC-G, eGFRcys, and eGFRScr-cys (r = 0.182, 0.122, 0.290, and 0.254 respectively, p < 0.01). The 3-year change of telomere length was 46 bp/years. When adjusted for age, the associations between telomere length changes and baseline, subsequent TRF lengths, and serum CysC were no longer present. No association was observed between TRF length changes and renal function. CONCLUSION The rate of telomere length changes was affected by age and baseline telomere length. The telomere length changes might be important markers for aging.
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Affiliation(s)
- W-G Zhang
- Xiangmei Chen, Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, 28 Fuxing Road, Beijing 100853, China,
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247
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Pavanello S, Angelici L, Hoxha M, Cantone L, Campisi M, Tirelli AS, Vigna L, Pesatori AC, Bollati V. Sterol 27-Hydroxylase Polymorphism Significantly Associates With Shorter Telomere, Higher Cardiovascular and Type-2 Diabetes Risk in Obese Subjects. Front Endocrinol (Lausanne) 2018; 9:309. [PMID: 29951035 PMCID: PMC6008574 DOI: 10.3389/fendo.2018.00309] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/23/2018] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND/OBJECTIVES The pathologic relationship linking obesity and lipid dismetabolism with earlier onset of aging-related disorders, including cardiovascular disease (CVD) and type-2 diabetes (T2D), is not fully elucidate. Chronic inflammatory state, in obese individuals, may accelerate cellular aging. However, leukocyte telomere length (LTL), the cellular biological aging indicator, is elusively linked with obesity. Recent studies indicate that sterol 27-hydroxylase (CYP27A1) is an emerging antiatherogenic enzyme, that, by converting extrahepatic cholesterol to 27-hydroxycholesterol, facilitates cholesterol removal via high-density lipoprotein-cholesterol (HDL-C). We tested the hypothesis that obese subjects who carry at least three copies of CYP27A1 low-hydroxylation (LH) activity genome-wide-validated alleles (rs4674345A, rs1554622A, and rs4674338G) present premature aging, as reflected in shorter LTL and higher levels of CVD/T2D risk factors, including reduced HDL-C. SUBJECTS/METHODS Obese subjects from SPHERE project {n = 1,457; overweight [body mass index (BMI) 25-30 kg/m2] 65.8% and severe-obese (BMI > 30 kg/m2) 34.2%} were characterized for the presence from 0 to 6 LH-CYP27A1 allele copy number. Univariate and multivariable sex-age-smoking-adjusted linear-regression models were performed to compare CVD/T2D risk factors and biological aging (LTL) in relation to the combined BMI-LH groups: overweight-LH: 0-2, overweight-LH: 3-6, severe-obese-LH: 0-2, and severe-obese-LH: 3-6. RESULTS Higher LTL attrition was found in severe-obese than overweight individuals (p < 0.001). Multivariable model reveals that among severe-obese patients those with LH: 3-6 present higher LTL attrition than LH: 0-2 (p < 0.05). Univariate and multivariable models remarkably show that insulin resistance is higher both in overweight-LH: 3-6 vs overweight-LH: 0-2 (p < 0.001) and in severe-obese-LH: 3-6 vs severe-obese-LH: 0-2 (p < 0.0001), and HDL-C is lower in overweight-LH: 3-6 than overweight-LH: 0-2 (p < 0.05 and p < 001). Finally, most of the well-known (i.e., blood pressure, heart rate, waist to hip, triglycerides, and HDL-C) and novel CVD risk factors [i.e., inflammation markers (C-reactive protein, leukocytes, and chemoattractant protein-1), fibrinogen, and glucose homeostasis (i.e., insulin resistance, and glycated hemoglobin)] are substantially (p < 0.0001) altered in severe-obese-LH: 0-2 vs overweight-LH: 0-2, pointing to the fact that obesity leads to worsen the CVD/T2D risk factor profile. CONCLUSION Our study supports evidence that CYP27A1 genetic characterization identifies persons at higher risk to develop CVD and T2D, on which better converge preventive measures, and opens new perspectives on mechanisms that link obesity with aging-related disorders.
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Affiliation(s)
- Sofia Pavanello
- Medicina del Lavoro, Dipartimento di Scienze Cardiologiche Toraciche e Vascolari, Università di Padova, Padova, Italy
- Azienda Ospedaliera di Padova, Unità di Medicina del Lavoro, Padova, Italy
- *Correspondence: Sofia Pavanello,
| | - Laura Angelici
- EPIGET – Epidemiology, Epigenetics and Toxicology Laboratory, Dipartimento di Scienze Cliniche e di Comunità, Università degli Studi di Milano, Milan, Italy
| | - Mirjam Hoxha
- EPIGET – Epidemiology, Epigenetics and Toxicology Laboratory, Dipartimento di Scienze Cliniche e di Comunità, Università degli Studi di Milano, Milan, Italy
| | - Laura Cantone
- EPIGET – Epidemiology, Epigenetics and Toxicology Laboratory, Dipartimento di Scienze Cliniche e di Comunità, Università degli Studi di Milano, Milan, Italy
| | - Manuela Campisi
- Medicina del Lavoro, Dipartimento di Scienze Cardiologiche Toraciche e Vascolari, Università di Padova, Padova, Italy
| | - Amedea Silvia Tirelli
- Dipartimento di Medicina Preventiva, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Luisella Vigna
- Dipartimento di Medicina Preventiva, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Angela Cecilia Pesatori
- EPIGET – Epidemiology, Epigenetics and Toxicology Laboratory, Dipartimento di Scienze Cliniche e di Comunità, Università degli Studi di Milano, Milan, Italy
- Dipartimento di Medicina Preventiva, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Valentina Bollati
- EPIGET – Epidemiology, Epigenetics and Toxicology Laboratory, Dipartimento di Scienze Cliniche e di Comunità, Università degli Studi di Milano, Milan, Italy
- Dipartimento di Medicina Preventiva, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
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248
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Stout SA, Lin J, Hernandez N, Davis EP, Blackburn E, Carroll JE, Glynn LM. Validation of Minimally-Invasive Sample Collection Methods for Measurement of Telomere Length. Front Aging Neurosci 2017; 9:397. [PMID: 29270121 PMCID: PMC5723637 DOI: 10.3389/fnagi.2017.00397] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 11/17/2017] [Indexed: 12/17/2022] Open
Abstract
Objective: The discovery of telomere length (TL) as a biomarker of cellular aging and correlate of age-related disease has generated a new field of research in the biology of healthy aging. Although the most common method of sample collection for TL is venous blood draw, less-invasive DNA collection methods are becoming more widely used. However, how TL relates across tissues derived from these sample collection methods is poorly understood. The current study is the first to characterize the associations in TL across three sample collection methods: venous whole blood, finger prick dried blood spot and saliva. Methods: TL was measured in 24 healthy young adults using three modes of sample collection for each participant: venous whole blood, finger prick dried blood spot and saliva. Relative TL was measured using quantitative polymerase chain reaction. Results: TL in finger prick dried blood spots (DBS) washighly correlated with TL in whole blood (r = 0.84, p < 0.001). Salivary TL was also correlated with whole blood TL (r = 0.56, p = 0.005), but this association was not as strong as that of dried blood spot TL (Steiger’s Z = 2.12, p = 0.034). TL was longer in saliva than in whole blood or DBS (p’s < 0.001). Conclusions: These findings have important implications for future study design by supporting the validity of less-invasive methods that can be implemented with vulnerable populations or in the field. Further, these findings aid in interpreting the burgeoning area of biological aging research and may shed light on our understanding of inconsistencies in the empirical literature.
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Affiliation(s)
- Stephanie A Stout
- Department of Psychology, University of Denver, Denver, CO, United States
| | - Jue Lin
- Department of Biochemistry and Biophysics, School of Medicine, University of California, San Francisco, San Francisco, CA, United States
| | - Natalie Hernandez
- Department of Psychiatry and Human Behavior, University of California, Irvine, Irvine, CA, United States
| | - Elysia P Davis
- Department of Psychology, University of Denver, Denver, CO, United States.,Department of Psychiatry and Human Behavior, University of California, Irvine, Irvine, CA, United States
| | - Elizabeth Blackburn
- Department of Biochemistry and Biophysics, School of Medicine, University of California, San Francisco, San Francisco, CA, United States
| | - Judith E Carroll
- Cousins Center for Psychoneuroimmunology, University of California, Los Angeles, Los Angeles, CA, United States
| | - Laura M Glynn
- Department of Psychology, Chapman University, Orange, CA, United States
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249
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Drury SS, Howell BR, Jones C, Esteves K, Morin E, Schlesinger R, Meyer JS, Baker K, Sanchez MM. Shaping long-term primate development: Telomere length trajectory as an indicator of early maternal maltreatment and predictor of future physiologic regulation. Dev Psychopathol 2017; 29:1539-1551. [PMID: 29162166 PMCID: PMC5864972 DOI: 10.1017/s0954579417001225] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The molecular, neurobiological, and physical health impacts of child maltreatment are well established, yet mechanistic pathways remain inadequately defined. Telomere length (TL) decline is an emerging molecular indicator of stress exposure with definitive links to negative health outcomes in maltreated individuals. The multiple confounders endemic to human maltreatment research impede the identification of causal pathways. This study leverages a unique randomized, cross-foster, study design in a naturalistic translational nonhuman primate model of infant maltreatment. At birth, newborn macaques were randomly assigned to either a maltreating or a competent control mother, balancing for sex, biological mother parenting history, and social rank. Offspring TL was measured longitudinally across the first 6 months of life (infancy) from peripheral blood. Hair cortisol accumulation was also determined at 6, 12, and 18 months of age. TL decline was greater in animals randomized to maltreatment, but also interacted with biological mother group. Shorter TL at 6 months was associated with higher mean cortisol levels through 18 months (juvenile period) when controlling for relevant covariates. These results suggest that even under the equivalent social, nutritional, and environmental conditions feasible in naturalistic translational nonhuman primate models, early adverse caregiving results in lasting molecular scars that foreshadow elevated health risk and physiologic dysregulation.
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250
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Alimam S, McLornan DP, Jiang J, Radia D, Mufti GJ, Harrison CN. Shortened telomeres in essential thrombocythemia: clinicopathological and treatment correlations. Haematologica 2017; 103:e234-e236. [PMID: 29191839 DOI: 10.3324/haematol.2017.180851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Samah Alimam
- Department of Haematology, Guy's and St. Thomas NHS Foundation Trust, London, UK.,Department of Haematological Medicine, King's College, London, UK
| | - Donal P McLornan
- Department of Haematology, Guy's and St. Thomas NHS Foundation Trust, London, UK.,Department of Haematological Medicine, King's College, London, UK
| | - Jie Jiang
- Department of Haematological Medicine, King's College, London, UK
| | - Deepti Radia
- Department of Haematology, Guy's and St. Thomas NHS Foundation Trust, London, UK
| | - Ghulam J Mufti
- Department of Haematological Medicine, King's College, London, UK
| | - Claire N Harrison
- Department of Haematology, Guy's and St. Thomas NHS Foundation Trust, London, UK
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