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Lima SM, Ren X, Mu L, Ochs-Balcom HM, Palermo T. Food Insecurity, telomere length and the potential modifying effects of social support in National Health and Nutrition Examination Survey. Public Health Nutr 2023; 26:3005-3012. [PMID: 37734859 PMCID: PMC10755437 DOI: 10.1017/s1368980023002008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 08/03/2023] [Accepted: 09/05/2023] [Indexed: 09/23/2023]
Abstract
OBJECTIVE Telomere length (TL) is a posited pathway through which chronic stress results in biological dysregulation and subsequent adverse health outcomes. Food insecurity is associated with shorter TL. Social support, which is defined by the size and function of an individual's social network, is associated with better health outcomes. The present study assesses whether social support modifies the relationship between food security and TL. DESIGN Cross-sectional study design. Linear regression was used to assess the association between food insecurity and TL, stratified by social support level. A multiplicative interacted model was used to formally test modification. SETTING Data come from the National Health and Nutrition Examination Survey 1999-2000 and 2001-2002 waves. PARTICIPANTS Adults aged 60 years and older who have measurements for TL. RESULTS Our sample comprised 2674 participants, and 63·5 % of the total sample had low social support, with 13·3 % being food insecure. In fully adjusted models, food insecurity was negatively though modestly associated (P = 0·13) with TL. Associations between food insecurity and TL were significantly modified by social support (interaction P = 0·026), whereby food insecurity had a stronger effect among individuals with high social support (coefficient = -0·099 (95 % CI: -0·161, -0·038)) compared to low social support (coefficient = -0·001, (95 % CI: -0·033, 0·032)). CONCLUSION Food insecurity is modestly associated with shorter TL. Contrary to our hypothesis, food insecurity had more deleterious effects on TL among participants with high social support than low social support. Results may indicate that the food insecure population is a higher needs population, and increased social support reflects these needs rather than providing protective effects.
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Affiliation(s)
- Sarah M Lima
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, State University of New York at Buffalo, Buffalo, NY14214, USA
| | - Xuefeng Ren
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, State University of New York at Buffalo, Buffalo, NY14214, USA
| | - Lina Mu
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, State University of New York at Buffalo, Buffalo, NY14214, USA
| | - Heather M Ochs-Balcom
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, State University of New York at Buffalo, Buffalo, NY14214, USA
| | - Tia Palermo
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, State University of New York at Buffalo, Buffalo, NY14214, USA
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Duchaine CS, Brisson C, Diorio C, Talbot D, Maunsell E, Carmichael PH, Giguère Y, Gilbert-Ouimet M, Trudel X, Ndjaboué R, Vézina M, Milot A, Mâsse B, Dionne CE, Laurin D. Work-Related Psychosocial Factors and Global Cognitive Function: Are Telomere Length and Low-Grade Inflammation Potential Mediators of This Association? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:4929. [PMID: 36981836 PMCID: PMC10049148 DOI: 10.3390/ijerph20064929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/05/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
The identification of modifiable factors that could maintain cognitive function is a public health priority. It is thought that some work-related psychosocial factors help developing cognitive reserve through high intellectual complexity. However, they also have well-known adverse health effects and are considered to be chronic psychosocial stressors. Indeed, these stressors could increase low-grade inflammation and promote oxidative stress associated with accelerated telomere shortening. Both low-grade inflammation and shorter telomeres have been associated with a cognitive decline. This study aimed to evaluate the total, direct, and indirect effects of work-related psychosocial factors on global cognitive function overall and by sex, through telomere length and an inflammatory index. A random sample of 2219 participants followed over 17 years was included in this study, with blood samples and data with cognitive function drawn from a longitudinal study of 9188 white-collar workers (51% female). Work-related psychosocial factors were evaluated according to the Demand-Control-Support and the Effort-Reward Imbalance (ERI) models. Global cognitive function was evaluated with the validated Montreal Cognitive Assessment (MoCA). Telomere length and inflammatory biomarkers were measured using standardised protocols. The direct and indirect effects were estimated using a novel mediation analysis method developed for multiple correlated mediators. Associations were observed between passive work or low job control, and shorter telomeres among females, and between low social support at work, ERI or iso-strain, and a higher inflammatory index among males. An association was observed with higher cognitive performance for longer telomeres, but not for the inflammatory index. Passive work overall, and low reward were associated with lower cognitive performance in males; whereas, high psychological demand in both males and females and high job strain in females were associated with a higher cognitive performance. However, none of these associations were mediated by telomere length or the inflammatory index. This study suggests that some work-related psychosocial factors could be associated with shorter telomeres and low-grade inflammation, but these associations do not explain the relationship between work-related psychosocial factors and global cognitive function. A better understanding of the biological pathways, by which these factors affect cognitive function, could guide future preventive strategies to maintain cognitive function and promote healthy aging.
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Affiliation(s)
- Caroline S. Duchaine
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- VITAM, Centre de Recherche en santé Durable, Québec, QC G1S 4L8, Canada
- Institut sur le Vieillissement et la Participation Sociale des Aînés, Université Laval, Québec, QC G1S 4L8, Canada
| | - Chantal Brisson
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- VITAM, Centre de Recherche en santé Durable, Québec, QC G1S 4L8, Canada
| | - Caroline Diorio
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
| | - Denis Talbot
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
| | - Elizabeth Maunsell
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
| | - Pierre-Hugues Carmichael
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
| | - Yves Giguère
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
| | - Mahée Gilbert-Ouimet
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- Canada Research Chair in Sex and Gender in Occupational Health, Université du Québec à Rimouski, Campus de Lévis, Lévis, QC G6V 0A6, Canada
| | - Xavier Trudel
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- VITAM, Centre de Recherche en santé Durable, Québec, QC G1S 4L8, Canada
| | - Ruth Ndjaboué
- School of Social Work, University of Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Michel Vézina
- Institut National de Santé Publique du Québec (INSPQ), Québec, QC G1V 5B3, Canada
| | - Alain Milot
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Benoît Mâsse
- École de Santé Publique de l’Université de Montréal, Montréal, QC H3N 1X9, Canada
| | - Clermont E. Dionne
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- VITAM, Centre de Recherche en santé Durable, Québec, QC G1S 4L8, Canada
- Institut sur le Vieillissement et la Participation Sociale des Aînés, Université Laval, Québec, QC G1S 4L8, Canada
| | - Danielle Laurin
- Centre d’excellence sur le vieillissement de Québec (CEVQ), CIUSSS-Capitale Nationale, Québec, QC G1S 4L8, Canada
- Centre de Recherche du CHU de Québec—Université Laval, Québec, QC G1S 4L8, Canada
- VITAM, Centre de Recherche en santé Durable, Québec, QC G1S 4L8, Canada
- Institut sur le Vieillissement et la Participation Sociale des Aînés, Université Laval, Québec, QC G1S 4L8, Canada
- Faculty of Pharmacy, Université Laval, Québec, QC G1V 0A6, Canada
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De Ruyter T, Martens DS, Bijnens EM, Nawrot TS, De Henauw S, Michels N. A multi-exposure approach to study telomere dynamics in childhood: A role for residential green space and waist circumference. ENVIRONMENTAL RESEARCH 2022; 213:113656. [PMID: 35691385 DOI: 10.1016/j.envres.2022.113656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/30/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Telomeres are vulnerable to various environmental exposures and lifestyle factors, encompassed in the exposome. Recent research shows that telomere length is substantially determined early in life and that exposures in childhood may have important consequences in setting later life telomere length. OBJECTIVES We explore in a child population the associations of 17 exposures with telomere length and longitudinal telomere change. METHODS Children (2.8-10.3y at baseline, 51.3% boys) were followed-up for five to seven years. Relative telomere length was measured at baseline and follow-up using quantitative real-time PCR. Exposures and lifestyle factors included: body composition (body mass index and waist circumference), dietary habits (sugar- and fat-rich food intake, vegetables and fruit intake), psychosocial stress (events, emotions, behaviour), sleep duration, physical activity, and residential environmental quality (longterm black carbon, particulate matter exposure, and residential green space). Cross-sectional (n=182) and longitudinal (n=150) analyses were assessed using linear regression models, adjusting for age, sex, socioeconomic status and multiple testing. RESULTS Our longitudinal analyses showed that higher residential green space at baseline was associated with (β=0.261, p=0.002) lower telomere attrition and that children with a higher waist circumference at baseline showed a higher telomere attrition (β=-0.287, p=0.001). These two predictors were confirmed via LASSO variable selection and correction for multiple testing. In addition, children with more unhealthy exposures at baseline had a significantly higher telomere attrition over the follow-up period compared to children with more healthy exposures (β=-0.200, p=0.017). DISCUSSION Waist circumference and residential green space were identified as predictors associated with telomere attrition in childhood. These results further support the advantages of a healthy lifestyle from early age onwards and the importance of a green environment to promote molecular longevity from childhood onwards.
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Affiliation(s)
- Thaïs De Ruyter
- Department of Public Health and Primary Care, Ghent University, Ghent, Belgium; Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium.
| | - Dries S Martens
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium
| | - Esmée M Bijnens
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium; Department of Human Structure and Repair, Ghent University, Ghent, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Hasselt, Belgium; Department of Public Health & Primary Care, University of Leuven, Leuven, Belgium
| | - Stefaan De Henauw
- Department of Public Health and Primary Care, Ghent University, Ghent, Belgium
| | - Nathalie Michels
- Department of Public Health and Primary Care, Ghent University, Ghent, Belgium
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4
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Kazantseva AV, Davydova YD, Enikeeva RF, Mustafin RN, Lobaskova MM, Malykh SB, Khusnutdinova EK. Individual Differences in Relative Telomere Length in Mentally Healthy Subjects: The Effect of TERT Gene Polymorphism and Urban Residency. RUSS J GENET+ 2022; 58:1135-1144. [PMID: 36119151 PMCID: PMC9470233 DOI: 10.1134/s1022795422090101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/17/2022] [Accepted: 04/04/2022] [Indexed: 11/23/2022]
Abstract
The changes in the telomere length caused by the terminal underreplication in the existing literature are related to depressive disorders. However, the use of the telomere length as a biomarker of depressive states is ambiguous, which is due to the effect of various environmental factors on both the psychoemotional state and cellular aging of an organism. In order to identify the possible use of the relative telomere length (RTL) measured in peripheral blood leukocytes as a biomarker of enhanced liability to depression prior to the clinical symptoms, as well as to determine the link between telomere length, sociodemographic factors, allelic variants of the genes involved in the regulation of telomere elongation, and depression level, the association analysis of reverse transcriptase (TERT rs7726159), telomerase RNA component (TERC rs1317082), and the CST complex encoding protein (OBFC1 rs2487999) gene polymorphisms was performed with RTL and depression level in mentally healthy individuals (N = 1065) aged 18-25 years. Together with genetic variants, the examined regression models included various sociodemographic parameters as predictors. As a result of statistical analysis, we failed to observe the association between RTL and individual differences in depression level in the studied sample. Nevertheless, multiple regression analysis allowed us to construct a statistically significant model of individual variance in RTL (P = 4.3е-4; r 2 = 0.018), which included rs7726159 in the TERT gene (P = 0.020; β = 0.078) and such environmental predictors as age (P = 0.001; β = -0.027) and place of residence in childhood (urban/rural area) (P = 0.048; β = 0.063). The data obtained confirm the involvement of TERT gene variants and age in telomere length in mentally healthy individuals aged 18-25 years and indicate a negative effect of urban residency on telomere length shortening, which reflects the cellular aging of an organism.
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Affiliation(s)
- A V Kazantseva
- Institute of Biochemistry and Genetics-Subdivision of the Ufa Federal Research Centre, Russian Academy of Sciences, 450054 Ufa, Russia.,Bashkir State University, 450076 Ufa, Russia.,Ufa State Petroleum Technical University, 450064 Ufa, Russia
| | - Yu D Davydova
- Institute of Biochemistry and Genetics-Subdivision of the Ufa Federal Research Centre, Russian Academy of Sciences, 450054 Ufa, Russia.,Bashkir State University, 450076 Ufa, Russia
| | - R F Enikeeva
- Institute of Biochemistry and Genetics-Subdivision of the Ufa Federal Research Centre, Russian Academy of Sciences, 450054 Ufa, Russia.,Bashkir State University, 450076 Ufa, Russia
| | - R N Mustafin
- Bashkir State Medical University, 450008 Ufa, Russia
| | - M M Lobaskova
- Psychological Institute, Russian Academy of Education, 125009 Moscow, Russia
| | - S B Malykh
- Psychological Institute, Russian Academy of Education, 125009 Moscow, Russia.,Moscow State University, 119991 Moscow, Russia
| | - E K Khusnutdinova
- Institute of Biochemistry and Genetics-Subdivision of the Ufa Federal Research Centre, Russian Academy of Sciences, 450054 Ufa, Russia.,Bashkir State University, 450076 Ufa, Russia.,Moscow State University, 119991 Moscow, Russia
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5
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Mezuk B, Kalesnikava V, Spears E, Kirk K, Rafferty J, Del Toro J. Self-Regulatory Coping Behaviors and Stress Reactivity: Exploring the Environmental Affordance Model of Health Disparities. J Aging Health 2022; 34:307-319. [DOI: 10.1177/08982643221085403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives To explore the relationship between self-regulatory coping behaviors (SRCB) and hypothalamic pituitary adrenal (HPA) stress reactivity. Methods Data came from the Richmond Stress and Sugar Study (n=125, median age: 57 years, 46% non-Hispanic White, 48% African American). The relationships between 11 SRCB (“health-harming” [e.g., smoking] and “health-promoting” [e.g., exercising]) with HPA stress reactivity, indicated by salivary cortisol response to the Trier Social Stress Test, was assessed using multi-level modeling. Results Health-harming and health-promoting SRCB were positively correlated (+0.33, p<0.001). Several individual behaviors were related to HPA stress reactivity, for example, smoking and meditation were associated with shallower increases in cortisol (smoking: −13.0%, 95%CI: −20.9% to −4.3%; meditation: −14.0%, 95%CI: −22.0% to −5.1%). However, SRCB summary measures were unrelated to stress reactivity. Discussion Health-harming and health-promoting SRCB are inter-related. Specific behaviors, rather than groupings as health-harming versus -promoting, are related to HPA stress reactivity.
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Affiliation(s)
- Briana Mezuk
- Center for Social Epidemiology and Population Health, Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
- Research Center for Group Dynamics, Institute for Social Research, University of Michigan, Ann Arbor, MI, USA
| | - Viktoryia Kalesnikava
- Center for Social Epidemiology and Population Health, Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Erica Spears
- Department of Health Behavior and Health Systems, School of Public Health, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Keri Kirk
- Department of Family Medicine, MedStar Georgetown University Hospital, Georgetown University, Washington DC, USA
| | - Jane Rafferty
- Research Center for Group Dynamics, Institute for Social Research, University of Michigan, Ann Arbor, MI, USA
| | - Juan Del Toro
- Learning Research and Development Center, University of Pittsburgh, Pittsburgh, PA, USA
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Coimbra BM, Carvalho CM, van Zuiden M, Williamson RE, Ota VK, Mello AF, Belangero SI, Olff M, Mello MF. The impact of neighborhood context on telomere length: A systematic review. Health Place 2022; 74:102746. [PMID: 35123384 DOI: 10.1016/j.healthplace.2022.102746] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 01/16/2022] [Accepted: 01/21/2022] [Indexed: 12/24/2022]
Abstract
A growing body of research demonstrates the association between neighborhood context and health. The underlying biological mechanisms of this association are not fully understood. We conducted a systematic review of studies that investigated the association between neighborhood context and telomere length (TL), a DNA-protein complex that shortens after cell division. Short TL is linked to age-related diseases and may be impacted by chronic stress. Nineteen eligible articles identified through PubMed and Scopus met inclusion criteria. Results demonstrated inconsistent support for the relationship between neighborhood disadvantage and short TL. However, findings across several studies provide evidence for an inverse association between perceived neighborhood problems and TL, suggesting that TL may be an important factor in understanding health vulnerabilities associated specifically with negative perceptions of the neighborhood context.
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Affiliation(s)
- Bruno Messina Coimbra
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Program for Research and Care on Violence and PTSD (PROVE), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Department of Psychiatry, Amsterdam University Medical Centers, Location AMC, Amsterdam Public Health Research Institute and Amsterdam Neuroscience Research Institute, Amsterdam, the Netherlands.
| | - Carolina Muniz Carvalho
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Department of Morphology and Genetics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; LiNC - Laboratory of Integrative Neuroscience, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Mirjam van Zuiden
- Department of Psychiatry, Amsterdam University Medical Centers, Location AMC, Amsterdam Public Health Research Institute and Amsterdam Neuroscience Research Institute, Amsterdam, the Netherlands
| | | | - Vanessa Kiyomi Ota
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Department of Morphology and Genetics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; LiNC - Laboratory of Integrative Neuroscience, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Andrea Feijó Mello
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Program for Research and Care on Violence and PTSD (PROVE), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Sintia Iole Belangero
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Department of Morphology and Genetics, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; LiNC - Laboratory of Integrative Neuroscience, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Miranda Olff
- Department of Psychiatry, Amsterdam University Medical Centers, Location AMC, Amsterdam Public Health Research Institute and Amsterdam Neuroscience Research Institute, Amsterdam, the Netherlands; ARQ National Psychotrauma Centre, Diemen, the Netherlands
| | - Marcelo Feijó Mello
- Department of Psychiatry, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil; Program for Research and Care on Violence and PTSD (PROVE), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
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7
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Leuthner TC, Meyer JN. Mitochondrial DNA Mutagenesis: Feature of and Biomarker for Environmental Exposures and Aging. Curr Environ Health Rep 2021; 8:294-308. [PMID: 34761353 PMCID: PMC8826492 DOI: 10.1007/s40572-021-00329-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2021] [Indexed: 01/12/2023]
Abstract
PURPOSE OF REVIEW Mitochondrial dysfunction is a hallmark of aging. Mitochondrial genome (mtDNA) instability contributes to mitochondrial dysfunction, and mtDNA mutagenesis may contribute to aging. However, the origin of mtDNA mutations remains somewhat controversial. The goals of this review are to introduce and review recent literature on mtDNA mutagenesis and aging, address recent animal and epidemiological evidence for the effects of chemicals on mtDNA damage and mutagenesis, propose hypotheses regarding the contribution of environmental toxicant exposure to mtDNA mutagenesis in the context of aging, and suggest future directions and approaches for environmental health researchers. RECENT FINDINGS Stressors such as pollutants, pharmaceuticals, and ultraviolet radiation can damage the mitochondrial genome or disrupt mtDNA replication, repair, and organelle homeostatic processes, potentially influencing the rate of accumulation of mtDNA mutations. Accelerated mtDNA mutagenesis could contribute to aging, diseases of aging, and sensitize individuals with pathogenic mtDNA variants to stressors. We propose three potential mechanisms of toxicant-induced effects on mtDNA mutagenesis over lifespan: (1) increased de novo mtDNA mutations, (2) altered frequencies of mtDNA mutations, or (3) both. There are remarkably few studies that have investigated the impact of environmental chemical exposures on mtDNA instability and mutagenesis, and even fewer in the context of aging. More studies are warranted because people are exposed to tens of thousands of chemicals, and are living longer. Finally, we suggest that toxicant-induced mtDNA damage and mutational signatures may be a sensitive biomarker for some exposures.
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Affiliation(s)
- Tess C Leuthner
- Nicholas School of the Environment, 9 Circuit Dr, Box 90328, Duke University, NC, 27708, USA
| | - Joel N Meyer
- Nicholas School of the Environment, 9 Circuit Dr, Box 90328, Duke University, NC, 27708, USA.
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8
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Analysis of telomere length variation and Shelterin complex subunit gene expression changes in ethanol-exposed human embryonic stem cells. J Psychiatr Res 2021; 143:543-549. [PMID: 33243459 PMCID: PMC8126580 DOI: 10.1016/j.jpsychires.2020.11.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 11/04/2020] [Accepted: 11/12/2020] [Indexed: 01/19/2023]
Abstract
Telomeres protect chromosome ends from degradation. Telomere length (TL) can be altered by aging and environmental stress. Shortened TL has been observed in peripheral blood leukocytes of alcohol dependent subjects and ethanol-exposed somatic cells. To understand the impact of ethanol on telomeres in pluripotent stem cells, we investigated the influence of ethanol on TL and the expression of six Shelterin complex subunit or telomere-regulating genes (POT1, RAP1, TIN2, TPP1, TRF1, and TRF2) in human embryonic stem cells (hESCs), which were exposed to 0, 25, 50, or 100 mM of ethanol for 3, 7, or 14 days. Ethanol-induced TL and Shelterin complex subunit gene expression changes were examined by quantitative polymerase chain reactions. Two-way ANOVA tests indicated that TL variation and expression changes of four associated Shelterin complex subunit genes (POT1, TPP1, TIN2, and TRF2) were mainly dependent on the length of ethanol exposure, while TRF1 and RAP1expression was influenced by ethanol concentration, exposure time, and the interaction of ethanol concentration and exposure time. Tukey's multiple comparison tests showed that TL and the expression of POT1, RAP1, TIN2, TPP1, and TRF1 were decreased after a 7-day (versus a 3-day) ethanol exposure. However, the decreased expression of all six Shelterin complex subunit genes was recovered and TL was not further shortened after a 14-day (versus a 7-day) ethanol exposure, likely due to the adaptation of hESCs to ethanol-induced stress. Our study provided further evidence that TL is regulated and maintained by telomere-regulating genes in stem cells under ethanol stress.
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Kim E, Shin MH, Yang JH, Ahn SK, Na BJ, Nam HS. Associations of regional-level perceived stress and depression with health-related quality of life in Korean adults: a multilevel analysis of 2017 Korea Community Health Survey data. Epidemiol Health 2021; 43:e2021062. [PMID: 34525500 PMCID: PMC8611318 DOI: 10.4178/epih.e2021062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 09/08/2021] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVES We examined the associations of individual and regional-level perceived stress and depression with health-related quality of life (HRQOL) in Korean adults. METHODS We used data from the 2017 Korea Community Health Survey, which included 216,713 adults living within 254 municipal districts. As individual-level independent variables, perceived stress (higher vs. lower) and depression (Patient Health Questionnaire-9 ≥10) were defined. Regional-level age-adjusted rates of perceived stress (%) and depression (%) were created for 254 municipal districts and categorized into quartiles to generate regional levels of stress and depression. HRQOL was defined as the individual-level EuroQol 5-dimensional index×100. A multilevel analysis was performed to identify the relationship between individual or regional-level independent variables and individual HRQOL. RESULTS In the null model, the proportions of individual variation in the HRQOL explained by region were 1.7% and 2.7% for men and women, respectively. When adjusted with all individual-level variables, regional stress and depression, as well as individual-level perceived stress and depression, were significantly related to HRQOL for both genders. In the full model including all variables, the decrease in HRQOL from the first to the fourth quartile group of regional stress was greater in women (-1.09; 95% confidence interval [CI], -1.87 to -0.31) than in men (-0.65; 95% CI, -1.04 to -0.26). CONCLUSIONS Our results suggest that regional-level perceived stress and depression, as well as individual-level perceived stress and depression, are inversely associated with individual HRQOL.
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Affiliation(s)
- Eunsu Kim
- Department of Public Health, Graduate School, Chungnam National University, Daejeon, Korea
| | - Min-Ho Shin
- Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Jung-Ho Yang
- Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Soon-Ki Ahn
- Public Health and Medical Services Office, Chungnam National University Hospital, Daejeon, Korea
| | - Baeg-Ju Na
- Graduate School of Urban Health, University of Seoul, Seoul, Korea
| | - Hae-Sung Nam
- Department of Preventive Medicine, Chungnam National University College of Medicine, Daejeon, Korea
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10
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Rapid changes of miRNAs-20, -30, -410, -515, -134, and -183 and telomerase with psychological activity: A one year study on the relaxation response and epistemological considerations. J Tradit Complement Med 2021; 11:409-418. [PMID: 34522635 PMCID: PMC8427477 DOI: 10.1016/j.jtcme.2021.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 02/04/2021] [Accepted: 02/05/2021] [Indexed: 11/22/2022] Open
Abstract
Background and aim Mental stress represents a pivotal factor in cardiovascular diseases. The mechanism by which stress produces its deleterious effects is still under study, but one of the most explored pathways is inflammation-aging and cell senescence. In this scenario, circulating microRNAs appear to be regulatory elements of the telomerase activity and alternative splicing within the nuclear factor kappa-light-chain-enhancer (NF-κB) network. Anti-stress techniques appeared to be able to slow down the inflammatory and aging processes. As we recently verified, the practice of the relaxation response (RR) counteracted psychological stress and determined favorable changes of the NF-κB, p53, and toll-like receptor-4 (TLR-4) gene expression and in neurotransmitters, hormones, cytokines, and inflammatory circulating microRNAs. We aimed to verify a possible change in the serum levels of six other micro-RNAs of cardiovascular interest, involved in cell senescence and in the NF-κB network (miRNAs -20, -30, -410, -515, -134, and -183), and tested the activity of telomerase in peripheral blood mononuclear cells (PBMCs). Experimental procedure We measured the aforementioned molecules in the serum of patients with ischemic heart disease (and healthy controls) immediately before and after a relaxation response session, three times (after the baseline), in one year of follow-up. Results According to our data, the miRNA-20 and -30 levels and PBMCs-telomerase activity increased during the RR while the -410 and -515 levels decreased. During the RR sessions, both miRNA-134 and -183 decreased. Conclusion The mediators considered in this exploratory work appeared to vary rapidly with the psychological activity (in particular when focused on relaxation techniques) showing that psychological activity should be part of the future research on epigenetics. Epistemological perspectives are also discussed.
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Disability as a Determinant of Health:: Lessons from the Pandemic. Dela J Public Health 2021; 7:10-15. [PMID: 34467190 PMCID: PMC8352487 DOI: 10.32481/djph.2021.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Cash RE, Anderson SE, Lancaster KE, Lu B, Rivard MK, Camargo CA, Panchal AR. Associations between sleep, stress, and cardiovascular health in emergency medical services personnel. J Am Coll Emerg Physicians Open 2021; 2:e12516. [PMID: 34322683 PMCID: PMC8295241 DOI: 10.1002/emp2.12516] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/28/2021] [Accepted: 07/01/2021] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVE Our objective was to quantify the associations between sleep duration and perceived and chronic stress with ideal cardiovascular health (CVH) among emergency medical services (EMS) personnel from county-based EMS agencies. METHODS We conducted a cross-sectional survey of cardiovascular disease (CVD)-free EMS personnel from 4 US EMS agencies. The questionnaire consisted of the Pittsburgh Sleep Quality Index (PSQI), Perceived Stress Scale (PSS), Chronic Burden Scale, and the CVH components (smoking, body mass index, physical activity, diet, blood glucose, blood pressure, cholesterol, each scored 0-2 points). The components were summed and ideal CVH considered 11-14 points. Mixed effects logistic regression models with a random intercept for agency were used to estimate the odds of ideal CVH for good sleep quality (PSQI < 5 points), recommended sleep duration (7 to < 9h), low perceived stress (PSS < 26 points), and low chronic stress (0 recent stressful events). RESULTS We received 379 responses (response rate = 32%). There was low prevalence of good sleep quality (23%) and recommended sleep duration (25%), but 95% reported low perceived stress, and 33% had low chronic stress. Ideal CVH was reported by 30%. No significant associations between ideal CVH and sleep quality, perceived stress, or chronic stress were found. There was a nearly 2-fold increase in the odds of ideal CVH with recommended sleep duration (odds ratio: 1.83, 95% confidence interval: 1.08-3.10). CONCLUSION In this sample of EMS personnel, only recommended sleep duration was associated with ideal CVH. Future longitudinal studies are needed to understand the relationship between sleep, stress, and CVD in this understudied occupational group.
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Affiliation(s)
- Rebecca E. Cash
- National Registry of Emergency Medical TechniciansColumbusOhioUSA
- Division of EpidemiologyThe Ohio State University College of Public HealthColumbusOhioUSA
| | - Sarah E. Anderson
- Division of EpidemiologyThe Ohio State University College of Public HealthColumbusOhioUSA
| | - Kathryn E. Lancaster
- Division of EpidemiologyThe Ohio State University College of Public HealthColumbusOhioUSA
| | - Bo Lu
- Division of BiostatisticsThe Ohio State University College of Public HealthColumbusOhioUSA
| | - Madison K. Rivard
- National Registry of Emergency Medical TechniciansColumbusOhioUSA
- Division of Health Behavior and Health PromotionThe Ohio State University College of Public HealthColumbusOhioUSA
| | - Carlos A. Camargo
- Department of Emergency MedicineMassachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Ashish R. Panchal
- National Registry of Emergency Medical TechniciansColumbusOhioUSA
- Division of EpidemiologyThe Ohio State University College of Public HealthColumbusOhioUSA
- Department of Emergency MedicineThe Ohio State University Wexner Medical CenterColumbusOhioUSA
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Hailu EM, Lewis TT, Needham BL, Lin J, Seeman TE, Mujahid MS. Longitudinal Associations between Discrimination, Neighborhood Social Cohesion, and Telomere Length: The Multi-Ethnic Study of Atherosclerosis (MESA). J Gerontol A Biol Sci Med Sci 2021; 77:glab193. [PMID: 34282826 PMCID: PMC8824602 DOI: 10.1093/gerona/glab193] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND We aimed to examine if neighborhood social cohesion moderated longitudinal associations between baseline reports of discrimination and 10-year changes in Leukocyte Telomere Length (LTL). METHODS Data are from the Multi-Ethnic Study of Atherosclerosis (MESA; N=1,064; age range 45-84 years). Baseline discrimination was measured using the Major Experiences of Discrimination Scale (MDS; none, 1 domain, ≥2 domains) and the Experiences of Discrimination Scale (EDS; none, moderate, high). Neighborhood social cohesion at baseline was assessed via a community survey within census tract defined neighborhoods. 10-year change in LTL was defined as Regression to the Mean corrected 10-year difference in the ratio of telomeric DNA to a single copy gene (T/S). RESULTS In linear mixed effects models, we found that neighborhood social cohesion modified the effect of baseline reports of MDS on 10-year changes in LTL, independent of sociodemographic characteristics, health behaviors, and health conditions (p(χ 2)=0.01). Among those residing in neighborhoods with low social cohesion, experiencing major discrimination in ≥2 domains was associated with faster LTL attrition over 10-years, compared to reporting no discrimination (β=-0.03; 95% CI: -0.06, -0.003). We found no main associations for either discrimination measure and no interaction between EDS and neighborhood social cohesion. CONCLUSIONS Results indicate that neighborhood social cohesion is an important dimension of the neighborhood context that may moderate the impact of major experiences of discrimination on telomere length attrition. These findings help advance our understanding of the integral role that neighborhood environments play in attenuating the effect of discrimination on accelerated cell aging.
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Affiliation(s)
- Elleni M Hailu
- Division of Epidemiology, School of Public Health, University of California Berkeley, USA
| | - Tené T Lewis
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Belinda L Needham
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, USA
| | - Jue Lin
- Department of Biochemistry and Biophysics, University of California San Francisco, USA
| | - Teresa E Seeman
- Department of Geriatrics, David Geffen School of Medicine, University of California Los Angeles, USA
| | - Mahasin S Mujahid
- Division of Epidemiology, School of Public Health, University of California Berkeley, USA
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Cowell W, Tang D, Yu J, Guo J, Wang S, Baccarelli AA, Perera F, Herbstman JB. Telomere dynamics across the early life course: Findings from a longitudinal study in children. Psychoneuroendocrinology 2021; 129:105270. [PMID: 34020264 PMCID: PMC8217283 DOI: 10.1016/j.psyneuen.2021.105270] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 05/04/2021] [Accepted: 05/06/2021] [Indexed: 01/07/2023]
Abstract
Telomeres are protective caps on chromosome ends that shorten with each cell division. Telomere length (TL) predicts the onset of cellular senescence and correlates with longevity and age-related disease risk. Previous research suggests that adults display fixed ranking and tracking of TL by age 20 years, supporting the importance of TL at birth and attrition during childhood. However, longitudinal research examining telomere dynamics during early life is sparse. Here, we used monochrome multiplex quantitative polymerase chain reaction to measure relative TL in leukocytes isolated from cord blood and child blood collected at ages 3, 5, 7, and 9 years among 224 minority children enrolled in a New York City-based birth cohort. We also measured maternal TL at delivery in a subset of 197 participants with a biobanked blood sample. TL decreased most rapidly in the first years of life (birth to 3 years), followed by a period of maintenance into the pre-puberty period. Mothers with longer telomeres gave birth to newborns with longer telomeres that remained longer across childhood, suggesting that the fixed ranking and tracking of TL observed among adults may extend to early childhood or even the prenatal period with a potential transgenerational basis. We did not find significant sex differences in the pattern of child TL change across development. These findings emphasize the need to understand factors and mechanisms that determine TL during early childhood.
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Affiliation(s)
- Whitney Cowell
- Columbia Center for Children's Environmental Health, Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA; Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA; Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY 10128, USA.
| | - Deliang Tang
- Columbia Center for Children's Environmental Health, Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA; Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
| | - Jie Yu
- Columbia Center for Children's Environmental Health, Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA; Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
| | - Jia Guo
- Columbia Center for Children's Environmental Health, Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA; Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
| | - Shuang Wang
- Columbia Center for Children's Environmental Health, Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA; Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
| | - Andrea A Baccarelli
- Columbia Center for Children's Environmental Health, Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA; Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
| | - Frederica Perera
- Columbia Center for Children's Environmental Health, Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA; Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
| | - Julie B Herbstman
- Columbia Center for Children's Environmental Health, Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA; Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
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Nettle D, Gadalla SM, Lai TP, Susser E, Bateson M, Aviv A. Measurement of Telomere Length for Longitudinal Analysis: Implications of Assay Precision. Am J Epidemiol 2021; 190:1406-1413. [PMID: 33564874 PMCID: PMC8245883 DOI: 10.1093/aje/kwab025] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 01/26/2021] [Accepted: 02/04/2021] [Indexed: 12/13/2022] Open
Abstract
Researchers increasingly wish to test hypotheses concerning the impact of environmental or disease exposures on telomere length (TL), and they use longitudinal study designs to do so. In population studies, TL is usually measured with a quantitative polymerase chain reaction (qPCR)-based method. This method has been validated by calculating its correlation with a gold standard method such as Southern blotting (SB) in cross-sectional data sets. However, in a cross-section, the range of true variation in TL is large, and measurement error is introduced only once. In a longitudinal study, the target variation of interest is small, and measurement error is introduced at both baseline and follow-up. In this paper, we present results from a small data set (n = 20) in which leukocyte TL was measured twice 6.6 years apart by means of both qPCR and SB. The cross-sectional correlations between qPCR and SB were high at both baseline (r = 0.90) and follow-up (r = 0.85), yet their correlation for TL change was poor (r = 0.48). Moreover, the qPCR data but not the SB data showed strong signatures of measurement error. Through simulation, we show that the statistical power gain from performing a longitudinal analysis is much greater for SB than for qPCR. We discuss implications for optimal study design and analysis.
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Affiliation(s)
- Daniel Nettle
- Correspondence to Dr. Daniel Nettle, Population Health Sciences Institute, Newcastle University, Henry Wellcome Building, Framlington Place, Newcastle upon Tyne NE2 4HH, United Kingdom (e-mail: )
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Impact of Snoring on Telomere Shortening in Adolescents with Atopic Diseases. Genes (Basel) 2021; 12:genes12050766. [PMID: 34069972 PMCID: PMC8157836 DOI: 10.3390/genes12050766] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/13/2021] [Accepted: 05/15/2021] [Indexed: 11/16/2022] Open
Abstract
Atopic diseases can impose a significant burden on children and adolescents. Telomere length is a cellular marker of aging reflecting the impact of cumulative stress exposure on individual health. Since elevated oxidative stress and inflammation burden induced by chronic atopy and snoring may impact telomere length, this study aimed to investigate whether snoring would moderate the relationship between atopic diseases and telomere length in early adolescence. We surveyed 354 adolescents and their parents. Parents reported the adolescents' history of atopic diseases, recent snoring history as well as other family sociodemographic characteristics. Buccal swab samples were also collected from the adolescents for telomere length determination. Independent and combined effects of atopic diseases and snoring on telomere length were examined. Among the surveyed adolescents, 174 were reported by parents to have atopic diseases (20 had asthma, 145 had allergic rhinitis, 53 had eczema, and 25 had food allergy). Shorter TL was found in participants with a history of snoring and atopic diseases (β = -0.34, p = 0.002) particularly for asthma (β = -0.21, p = 0.007) and allergic rhinitis (β = -0.22, p = 0.023). Our findings suggest that snoring in atopic patients has important implications for accelerated telomere shortening. Proper management of atopic symptoms at an early age is important for the alleviation of long-term health consequences at the cellular level.
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Li R, Li S, Pan M, Chen H, Liu X, Chen G, Chen R, Mao Z, Huo W, Wang X, Yu S, Duan Y, Guo Y, Hou J, Wang C. Physical activity attenuated the association of air pollutants with telomere length in rural Chinese adults. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 759:143491. [PMID: 33218817 DOI: 10.1016/j.scitotenv.2020.143491] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 10/21/2020] [Accepted: 10/25/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Exposure to air pollutants (nitrogen dioxide (NO2) and particulate matters (PMs)) or physical inactivity is linked to telomere length (TL) shortening. However, there is a lack of research on combined effects of either NO2 or PMs and physical activity (PA) on TL. This study aimed to explore the joint associations of air pollutants (NO2 or PMs) and PA with relative TL in rural Chinese adults. METHODS This study was conducted among 2704 participants aged 18-79 years in rural China. Concentrations of NO2 and PMs (PM with an aerodynamics diameter ≤ 1.0 μm (PM1), ≤2.5 μm (PM2.5) or ≤10 μm (PM10)) were estimated using random forest models incorporated with satellites data, meteorological data, and land use information. Relative TL of each participant was measured by a quantitative real-time polymerase chain reaction. Linear regression models were applied to examine the independent associations between PA, NO2 or PMs and relative TL. Interaction plots were used to depict the altered associations between NO2, PM1, PM2.5, or PM10 and relative TL along with increasing PA levels. RESULTS Each 1 μg/m3 increment in NO2, PM1, PM2.5, or PM10 was associated with a 0.038 (95% confidence intervals (CI): -0.044, -0.033), 0.036 (95% CI: -0.041, -0.031), 0.052 (95% CI: -0.059, -0.045), or 0.022 (95% CI: -0.025, -0.019) decrease in relative TL among all participants; similar findings were observed among normal glucose tolerance or impaired fasting glucose (IFG) participants as well as type 2 diabetes mellitus (T2DM) patients. PA at certain levels counteracted the association of air pollutants (NO2, PM1, PM2.5, and PM10) with relative TL among IFG participants or T2DM patients. CONCLUSIONS Long-term exposure to NO2 and PMs was associated with relative TL shortening and these effects may be counteracted by PA at certain levels in IFG participants or T2DM patients.
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Affiliation(s)
- Ruiying Li
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Shanshan Li
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Mingming Pan
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Hao Chen
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Xiaotian Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Gongbo Chen
- Guangdong Provincial Engineering Technology Research Center of Environmental and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, PR China
| | - Ruoling Chen
- Faculty of Education, Health and Wellbeing, University of Wolverhampton, Wolverhampton, UK
| | - Zhenxing Mao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Wenqian Huo
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Xian Wang
- Department of Maternal, Child and Adolescent Health, School of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Songcheng Yu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Yanying Duan
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha 410078, PR China
| | - Yuming Guo
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Jian Hou
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China.
| | - Chongjian Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China.
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Brown R, Hailu EM, Needham BL, Roux AD, Seeman TE, Lin J, Mujahid MS. Neighborhood social environment and changes in leukocyte telomere length: The Multi-Ethnic Study of Atherosclerosis (MESA). Health Place 2020; 67:102488. [PMID: 33276262 DOI: 10.1016/j.healthplace.2020.102488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 11/10/2020] [Accepted: 11/16/2020] [Indexed: 12/01/2022]
Abstract
Given limited research on the impact of neighborhood environments on accelerated biological aging, we examined whether changes in neighborhood socioeconomic and social conditions were associated with change in leukocyte telomere length using 10 years of longitudinal data from the Multi-Ethnic Study of Atherosclerosis (years 2000-2011; N = 1031; mean age = 61, SD = 9.4). Leukocyte telomere length change was corrected for regression to the mean and neighborhood was defined as census tract. Neighborhood socioeconomic indicators (factor-based score of income, education, occupation, and wealth of neighborhood) and neighborhood social environment indicators (aesthetic quality, social cohesion, safety) were obtained from the U.S Census/American Community Survey and via study questionnaire, respectively. Results of linear mixed-effects models showed that independent of individual sociodemographic characteristics, each unit of improvement in neighborhood socioeconomic status was associated with slower telomere length attrition over 10-years (β = 0.002; 95% Confidence Interval (CI): 0.0001, 0.004); whereas each unit of increase in safety (β = -0.043; 95% CI: -0.069, -0.016) and overall neighborhood social environment score (β = -0.005; 95% CI: -0.009, -0.0004) were associated with more pronounced telomere attrition, after additionally adjusting for neighborhood socioeconomic status. This study provides support for considerations of the broader social and socioeconomic contexts in relation to biological aging. Future research should explore potential psychosocial mechanisms underlying these associations using longitudinal study designs with repeated observations.
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Affiliation(s)
- Rashida Brown
- Division of Epidemiology, School of Public Health, University of California Berkeley, 2121 Berkeley Way West #5302, Berkeley, CA, 94720, USA
| | - Elleni M Hailu
- Division of Epidemiology, School of Public Health, University of California Berkeley, 2121 Berkeley Way West #5302, Berkeley, CA, 94720, USA.
| | - Belinda L Needham
- Department of Epidemiology, School of Public Health, University of Michigan, 1415 Washington Heights, Ann Arbor, MI, 48109, USA
| | - Ana Diez Roux
- Department of Epidemiology and Biostatistics, Dornsife School of Public Health, Drexel University, 3215 Market Street, Philadelphia, PA, 19104, USA
| | - Teresa E Seeman
- Department of Geriatrics, David Geffen School of Medicine, University of California Los Angeles, 10833 Le Conte Ave, Los Angeles, CA, 90095, USA
| | - Jue Lin
- Department of Biochemistry and Biophysics, University of California San Francisco, 600 16th St, San Francisco, CA, 94158, USA
| | - Mahasin S Mujahid
- Division of Epidemiology, School of Public Health, University of California Berkeley, 2121 Berkeley Way West #5302, Berkeley, CA, 94720, USA
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Noppert GA, Feinstein L, Dowd JB, Stebbins RC, Zang E, Needham BL, Meier HCS, Simanek A, Aiello AE. Pathogen burden and leukocyte telomere length in the United States. Immun Ageing 2020; 17:36. [PMID: 33292353 PMCID: PMC7677839 DOI: 10.1186/s12979-020-00206-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/03/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND Prior studies in humans have suggested that telomere shortening may be accelerated by infection, but research on multiple pathogens and use of large population-based study samples has been limited. We estimated cross-sectional associations between seropositivity to five persistent pathogens (Herpes Simplex Virus Type-1 (HSV-1), Herpes Simplex Virus Type-2 (HSV-2), cytomegalovirus (CMV), Helicobacter pylori (H.pylori), and Hepatitis B) as well as total pathogen burden and leukocyte telomere length. Data were derived from the National Health and Nutrition Examination Survey (1999-2000) for individuals 20-49 years of age, N = 1708. We analyzed the influence of each pathogen separately, a pathogen count score and a latent class model of pathogen burden on log telomere length using linear regression models, adjusted for covariates. RESULTS Individuals in a latent pathogen burden class characterized by high probabilities of infection with HSV-1, CMV, and H. pylori, had significantly decreased log telomere length (- 0.30 [95% CI: - 0.36, - 0.24]) compared to those in a latent class characterized by low probabilities of all five infections. There were limited significant associations using other pathogen measures. CONCLUSIONS These results suggest that infection with specific combinations of pathogens may be one mechanism contributing to accelerated cellular senescence with possible origins early in the life course.
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Affiliation(s)
- Grace A Noppert
- Social Environment and Health, Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, MI, USA.
- Carolina Population Center, University of North Carolina at Chapel Hill, 123 West Franklin St., Chapel Hill, NC, 27516, USA.
| | - Lydia Feinstein
- Department of Epidemiology, Gillings School of Global Public, University of North Carolina at Chapel Hill, 123 West Franklin St., Chapel Hill, NC, 27516, USA
- Social & Scientific Systems, Durham, NC, USA
| | - Jennifer B Dowd
- Leverhulme Centre for Demographic Science, Department of Sociology, University of Oxford, Oxford, UK
| | - Rebecca C Stebbins
- Department of Epidemiology, Gillings School of Global Public, University of North Carolina at Chapel Hill, 123 West Franklin St., Chapel Hill, NC, 27516, USA
| | - Emma Zang
- Department of Sociology, Yale University, New Haven, CT, USA
| | | | - Helen C S Meier
- Joseph J. Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Amanda Simanek
- Joseph J. Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Allison E Aiello
- Carolina Population Center, University of North Carolina at Chapel Hill, 123 West Franklin St., Chapel Hill, NC, 27516, USA.
- Department of Epidemiology, Gillings School of Global Public, University of North Carolina at Chapel Hill, 123 West Franklin St., Chapel Hill, NC, 27516, USA.
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Cash RE, Anderson SE, Lancaster KE, Lu B, Rivard MK, Camargo CA, Panchal AR. Comparing the Prevalence of Poor Sleep and Stress Metrics in Basic versus Advanced Life Support Emergency Medical Services Personnel. PREHOSP EMERG CARE 2020; 24:644-656. [DOI: 10.1080/10903127.2020.1758259] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Rebecca E. Cash
- Department of Emergency Medicine, Massachusetts General Hospital, Boston, MA (REC, CAC)
| | - Sarah E. Anderson
- National Registry of Emergency Medical Technicians, Columbus, OH (REC, MKR, ARP)
| | - Kathryn E. Lancaster
- Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (REC, SEA, KEL, ARP)
| | - Bo Lu
- Division of Biostatistics, The Ohio State University College of Public Health, Columbus, OH (BL)
| | - Madison K. Rivard
- Division of Health Behavior and Health Promotion, The Ohio State University College of Public Health, Columbus, OH (MKR)
| | - Carlos A. Camargo
- Department of Emergency Medicine, The Ohio State University Wexner Medical Center, Columbus, OH (ARP)
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Entringer S, Epel ES. The stress field ages: A close look into cellular aging processes. Psychoneuroendocrinology 2020; 113:104537. [PMID: 32085926 PMCID: PMC7429448 DOI: 10.1016/j.psyneuen.2019.104537] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 11/28/2019] [Indexed: 12/20/2022]
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, Irvine, Irvine, California, USA.
| | - Elissa S Epel
- Department of Psychiatry, and Center for Health and Community, University of California, San Francisco, California, USA.
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Atti Le giornate della ricerca scientificae delle esperienze professionali dei giovani: Società Italiana di Igiene, Medicina Preventiva e Sanità Pubblica (SItI) Roma 20-21 dicembre 2019. JOURNAL OF PREVENTIVE MEDICINE AND HYGIENE 2020; 60:E1-E85. [PMID: 32258536 PMCID: PMC7105054 DOI: 10.15167/2421-4248/jpmh2019.60.4s3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Powell-Wiley TM, Gebreab SY, Claudel SE, Ayers C, Andrews MR, Adu-Brimpong J, Berrigan D, Davis SK. The relationship between neighborhood socioeconomic deprivation and telomere length: The 1999-2002 National Health and Nutrition Examination Survey. SSM Popul Health 2019; 10:100517. [PMID: 31872036 PMCID: PMC6909179 DOI: 10.1016/j.ssmph.2019.100517] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 12/29/2022] Open
Abstract
Socioeconomically disadvantaged neighborhoods have been associated with poor health outcomes. Little is known about the biological mechanism by which deprived neighborhood conditions exert negative influences on health. Data from the 1999–2002 National Health and Nutrition Examination Surveys (NHANES) were used to assess the relationship between neighborhood deprivation index (NDI) and log-transformed leukocyte telomere length (LTL) via multilevel modeling to control for census tract level clustering. Models were constructed using tertiles of NDI (ref = low NDI). NDI was calculated using census tract level socioeconomic indicators from the 2000 U.S. Census. The sample (n = 5,106 adults) was 49.8% female and consisted of 82.9% non-Hispanic whites, 9.4% non-Hispanic blacks, and 7.6% Mexican Americans. Mean age was 45.8 years. Residents of neighborhoods with high NDI were younger, non-white, had lower educational attainment, and had a lower poverty to income ratio (all p < 0.0001). Neighborhood deprivation was inversely associated with LTL among individuals living in neighborhoods with medium NDI (β = −0.043, SE = 0.012, p = 0.0005) and high NDI (β = −0.039, SE = 0.013, p = 0.003). Among men, both medium (β = −0.042, SE = 0.015, p = 0.006) and high (β = −0.047, SE = 0.015, p = 0.001) NDI were associated with shorter LTL. Among women, only medium NDI (β = −0.020, SE = 0.016, p = 0.009) was associated with shorter LTL. After controlling for individual characteristics, including individual-level socioeconomic status, increasing neighborhood socioeconomic deprivation is associated with shorter LTL among a nationally representative sample of US adults. This suggests that telomere shortening may be a mechanism through which neighborhood deprivation results in poor health outcomes. Neighborhood deprivation is inversely related to telomere length. This persists after adjusting for behavior and individual socioeconomic status. Telomere shortening in high deprivation represented 7.5 years of accelerated aging. Telomere shortening may be a mechanism linking neighborhoods and health.
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Affiliation(s)
- Tiffany M. Powell-Wiley
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
- National Institute on Minority Health and Health Disparities, National Institutes of Health, Bethesda, MD, USA
- Corresponding author. Social Determinants of Obesity and Cardiovascular Risk Laboratory, Cardiovascular Branch, DIR, NHLBI, Building 10-CRC, Room 5-5332, MSC 1454 10 Center Drive, Bethesda, MD, 20892, USA.
| | - Samson Y. Gebreab
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Sophie E. Claudel
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Colby Ayers
- Reynolds Cardiovascular Clinical Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Marcus R. Andrews
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Joel Adu-Brimpong
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - David Berrigan
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Sharon K. Davis
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
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