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Kemp BR, Ferraro KF. Are Biological Consequences of Childhood Exposures Detectable in Telomere Length Decades Later? J Gerontol A Biol Sci Med Sci 2021; 76:7-14. [PMID: 31956916 DOI: 10.1093/gerona/glaa019] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Indexed: 12/13/2022] Open
Abstract
Negative early-life exposures have been linked to a host of poor adult health outcomes, but are such early exposures associated with cellular senescence decades later? This study uses data from the Health and Retirement Study to examine the association between six childhood exposure domains (eg, socioeconomic disadvantage, risky parental behavior) and a biomarker of aging, telomere length, among 4,935 respondents. Telomere length is obtained from DNA of cells found in saliva and is measured as the telomere repeat copy number to single gene copy number ratio (T/S). Men who as children were exposed to risky parental behaviors or who reported risky adolescent behaviors have shorter telomeres (b = -0.031, p = .052; b = -0.041, p = .045, respectively); however, these relationships are attenuated after adjusting for adult risks and resources. Among women, parental substance abuse is associated with shorter telomeres even after adjusting for adult risks and resources (b = -0.041, p = .005). In addition, men and women whose mother lived at least until the age of 85 have longer telomeres than those without a long-lived mother (b = 0.021, p = .045; b = 0.032, p = .005, respectively). Taken together, the ways in which early-life exposures are associated with adult telomeres vary for men and women.
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Affiliation(s)
| | - Kenneth F Ferraro
- Center on Aging and the Life Course, Purdue University, West Lafayette, Indiana.,Department of Sociology, Purdue University, West Lafayette, Indiana
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102
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Telomeres: New players in immune-mediated inflammatory diseases? J Autoimmun 2021; 123:102699. [PMID: 34265700 DOI: 10.1016/j.jaut.2021.102699] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/02/2021] [Accepted: 07/05/2021] [Indexed: 12/21/2022]
Abstract
Telomeres are repetitive DNA sequences located at the ends of linear chromosomes that preserve the integrity and stability of the genome. Telomere dysfunctions due to short telomeres or altered telomere structures can ultimately lead to replicative cellular senescence and chromosomal instability, both mechanisms being hallmarks of ageing. Chronic inflammation, oxidative stress and finally telomere length (TL) dynamics have been shown to be involved in various age-related non-communicable diseases (NCDs). Immune-mediated inflammatory diseases (IMIDs), including affections such as inflammatory bowel disease, psoriasis, rheumatoid arthritis, spondyloarthritis and uveitis belong to this group of age-related NCDs. Although in recent years, we have witnessed the emergence of studies in the literature linking these IMIDs to TL dynamics, the causality between these diseases and telomere attrition is still unclear and controversial. In this review, we provide an overview of available studies on telomere dynamics and discuss the utility of TL measurements in immune-mediated inflammatory diseases.
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103
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Franke K, Bublak P, Hoyer D, Billiet T, Gaser C, Witte OW, Schwab M. In vivo biomarkers of structural and functional brain development and aging in humans. Neurosci Biobehav Rev 2021; 117:142-164. [PMID: 33308708 DOI: 10.1016/j.neubiorev.2017.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 11/01/2017] [Accepted: 11/03/2017] [Indexed: 12/25/2022]
Abstract
Brain aging is a major determinant of aging. Along with the aging population, prevalence of neurodegenerative diseases is increasing, therewith placing economic and social burden on individuals and society. Individual rates of brain aging are shaped by genetics, epigenetics, and prenatal environmental. Biomarkers of biological brain aging are needed to predict individual trajectories of aging and the risk for age-associated neurological impairments for developing early preventive and interventional measures. We review current advances of in vivo biomarkers predicting individual brain age. Telomere length and epigenetic clock, two important biomarkers that are closely related to the mechanistic aging process, have only poor deterministic and predictive accuracy regarding individual brain aging due to their high intra- and interindividual variability. Phenotype-related biomarkers of global cognitive function and brain structure provide a much closer correlation to age at the individual level. During fetal and perinatal life, autonomic activity is a unique functional marker of brain development. The cognitive and structural biomarkers also boast high diagnostic specificity for determining individual risks for neurodegenerative diseases.
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Affiliation(s)
- K Franke
- Department of Neurology, Jena University Hospital, Jena, Germany.
| | - P Bublak
- Department of Neurology, Jena University Hospital, Jena, Germany
| | - D Hoyer
- Department of Neurology, Jena University Hospital, Jena, Germany
| | | | - C Gaser
- Department of Neurology, Jena University Hospital, Jena, Germany; Department of Psychiatry, Jena University Hospital, Jena, Germany
| | - O W Witte
- Department of Neurology, Jena University Hospital, Jena, Germany
| | - M Schwab
- Department of Neurology, Jena University Hospital, Jena, Germany
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104
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Abstract
BACKGROUND The landmark National Aeronautics and Space Administration Twins Study represented an integrated effort to launch human space life science research into the modern age of molecular- and "omics"-based studies. As part of the first One-Year Mission aboard the International Space Station, identical twin astronauts Scott and Mark Kelly were the subjects of this "out of this world" research opportunity. Telomeres, the natural ends of chromosomes that shorten with cell division and a host of lifestyle factors and stresses, are key molecular determinants of aging and aging trajectories. METHODS We proposed that telomere length dynamics (changes over time) represent a particularly relevant and integrative biomarker for astronauts, as they reflect the combined experiences and environmental exposures encountered during spaceflight. Telomere length (quantitative polymerase chain reaction and telomere fluorescence in situ hybridization) and telomerase activity (quantitative polymerase chain reaction -telomere repeat amplification protocol) were longitudinally assessed in the space- and earth-bound twins. Chromosome aberrations (directional genomic hybridization), signatures of radiation exposure, were also evaluated. RESULTS The twins had relatively similar telomere lengths before spaceflight, and the earth-bound twins' telomeres remained relatively stable over the course of the study. Surprisingly, the space twins' telomeres were longer during spaceflight, and upon return to Earth shortened rapidly, resulting in many more short telomeres after spaceflight than before. Chromosomal signatures of space radiation exposure were also elevated during spaceflight, and increased inversion frequencies persisted after spaceflight, suggestive of ongoing genome instability. CONCLUSION Although the definitive mechanisms underlying such dramatic spaceflight-associated shifts in telomere length remain unclear, improved maintenance of telomere length has important implications for aging science and improving healthspan for those on Earth, as well.
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105
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Hägg S, Jylhävä J. Sex differences in biological aging with a focus on human studies. eLife 2021; 10:e63425. [PMID: 33982659 PMCID: PMC8118651 DOI: 10.7554/elife.63425] [Citation(s) in RCA: 123] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 05/04/2021] [Indexed: 02/06/2023] Open
Abstract
Aging is a complex biological process characterized by hallmark features accumulating over the life course, shaping the individual's aging trajectory and subsequent disease risks. There is substantial individual variability in the aging process between men and women. In general, women live longer than men, consistent with lower biological ages as assessed by molecular biomarkers, but there is a paradox. Women are frailer and have worse health at the end of life, while men still perform better in physical function examinations. Moreover, many age-related diseases show sex-specific patterns. In this review, we aim to summarize the current knowledge on sexual dimorphism in human studies, with support from animal research, on biological aging and illnesses. We also attempt to place it in the context of the theories of aging, as well as discuss the explanations for the sex differences, for example, the sex-chromosome linked mechanisms and hormonally driven differences.
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Affiliation(s)
- Sara Hägg
- Department of Medical Epidemiology and Biostatistics, Karolinska InstitutetStockholmSweden
| | - Juulia Jylhävä
- Department of Medical Epidemiology and Biostatistics, Karolinska InstitutetStockholmSweden
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106
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Gorenjak V, Petrelis AM, Stathopoulou MG, Visvikis-Siest S. Telomere length determinants in childhood. Clin Chem Lab Med 2021; 58:162-177. [PMID: 31465289 DOI: 10.1515/cclm-2019-0235] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 07/30/2019] [Indexed: 01/16/2023]
Abstract
Telomere length (TL) is a dynamic marker that reflects genetic predispositions together with the environmental conditions of an individual. It is closely related to longevity and a number of pathological conditions. Even though the extent of telomere research in children is limited compared to that of adults, there have been a substantial number of studies providing first insights into child telomere biology and determinants. Recent discoveries revealed evidence that TL is, to a great extent, determined already in childhood and that environmental conditions in adulthood have less impact than first believed. Studies have demonstrated that large inter-individual differences in TL are present among newborns and are determined by diverse factors that influence intrauterine development. The first years of child growth are associated with high cellular turnover, which results in fast shortening of telomeres. The rate of telomere loss becomes stable in early adulthood. In this review article we summarise the existing knowledge on telomere dynamics during the first years of childhood, highlighting the conditions that affect newborn TL. We also warn about the knowledge gaps that should be filled to fully understand the regulation of telomeres, in order to implement them as biomarkers for use in diagnostics or treatment.
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Affiliation(s)
| | | | | | - Sophie Visvikis-Siest
- University of Lorraine, Inserm, IGE-PCV, Nancy, France.,Department of Internal Medicine and Geriatrics, CHU Technopôle Nancy-Brabois, Vandoeuvre-lès-Nancy, France
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107
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Mehta SR, Iudicello JE, Lin J, Ellis RJ, Morgan E, Okwuegbuna O, Cookson D, Karris M, Saloner R, Heaton R, Grant I, Letendre S. Telomere length is associated with HIV infection, methamphetamine use, inflammation, and comorbid disease risk. Drug Alcohol Depend 2021; 221:108639. [PMID: 33621803 PMCID: PMC8026664 DOI: 10.1016/j.drugalcdep.2021.108639] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/17/2021] [Accepted: 02/01/2021] [Indexed: 01/10/2023]
Abstract
BACKGROUND HIV infection and methamphetamine dependence (METH) are each associated with inflammation and premature aging, but their impact on biological aging is difficult to measure. Here we examined the impact of HIV and METH on leukocyte telomere lengths (LTL), and the correlations between LTL and other aging biomarkers. METHODS The study was a cross-sectional analysis of 161 individuals categorized by HIV and methamphetamine (METH) dependence status into four groups: HIV-METH- (n = 50), HIV-METH+ (n = 29), HIV + METH- (n = 40), and HIV + METH+ (n = 42). We analyzed the relationships of leukocyte telomere length (telomere to single copy gene [T/S] ratio) with demographic and clinical data as well as a panel of biomarkers of inflammation and endothelial activation measured in blood and cerebrospinal fluid (CSF). RESULTS HIV and METH were independently associated with shorter T/S ratio, even after adjusting for demographics and leukocyte count (R2 = 0·59, p < 0·0001). Higher plasma C-reactive protein (p = 0·0036) and CSF VCAM-1 (p = 0·0080) were also associated with shorter T/S ratio. A shorter T/S ratio was associated with higher risk for cardiovascular disease (p < 0·0001) and stroke (p < 0·0001), worse motor functioning (p = 0·037) and processing speed (p = 0·023), more depressive symptoms (p = 0·013), and higher CSF neurofilament-light (p = 0·003). CONCLUSIONS HIV and METH dependence were each associated with shorter telomeres. After adjusting for demographics, HIV, and METH, T/S ratio remained associated with aging-related outcomes including neurocognitive impairment, neurodegeneration, risks of cardiovascular disease and stroke. While not establishing causality, this study supports using the T/S ratio as a biomarker for estimating the impact of HIV and comorbidities on long-term health.
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Affiliation(s)
- Sanjay R Mehta
- Department of Medicine University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA; San Diego Veterans Affairs Healthcare System, San Diego, CA, 92131, USA.
| | - Jennifer E Iudicello
- Department of Psychiatry University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA
| | - Jue Lin
- Department of Biophysics and Biochemistry University of California San Francisco, CA, USA
| | - Ronald J Ellis
- Department of Neurology University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA
| | - Erin Morgan
- Department of Psychiatry University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA
| | - Oluwakemi Okwuegbuna
- Department of Medicine University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA
| | - Debra Cookson
- Department of Psychiatry University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA
| | - Maile Karris
- Department of Medicine University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA
| | - Rowan Saloner
- Department of Psychiatry University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA
| | - Robert Heaton
- Department of Psychiatry University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA
| | - Igor Grant
- Department of Psychiatry University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA
| | - Scott Letendre
- Department of Medicine University of California San Diego, 9500 Gilman Drive La Jolla, CA, 92093, USA
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108
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D'Amelio P. Vitamin D Deficiency and Risk of Metabolic Syndrome in Aging Men. World J Mens Health 2021; 39:291-301. [PMID: 33663024 PMCID: PMC7994656 DOI: 10.5534/wjmh.200189] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/10/2020] [Accepted: 12/22/2020] [Indexed: 12/11/2022] Open
Abstract
The elderly population is rapidly increasing; hence, the disability due to age-related diseases has become an important socioeconomic burden. Amongst age-related diseases cardiovascular ones (CVD) have a huge impact on morbidity and mortality and are associated with metabolic syndrome (MetS). Several studies investigated the role of hypovitaminosis D in the pathogenesis of MetS and of CVD, this review unravels the relationship between aging/senescence, vitamin D, gender, and pathogenesis of MetS.
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Affiliation(s)
- Patrizia D'Amelio
- Department of Internal Medicine, Service of Geriatric Medicine and Geriatric Rehabilitation, University of Lausanne Hospital Centre, Lausanne, Switzerland.
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109
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Panjawatanan P, Charoenkwan P, Tantiworawit A, Strogatz D, Perry KE, Tuntiwechapikul W. Telomere shortening correlates with disease severity in hemoglobin H disease patients. Blood Cells Mol Dis 2021; 89:102563. [PMID: 33798832 DOI: 10.1016/j.bcmd.2021.102563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/16/2021] [Accepted: 03/19/2021] [Indexed: 10/21/2022]
Abstract
Hemoglobin H (Hb H) disease is the most significant health problem of the α-thalassemia syndromes. The Hb disease patients are categorized based on their genotype to deletional and nondeletional, with the latter genotype presents the more severe clinical symptoms. Since telomere length is an indicator of biological aging and health, we hypothesized that telomere length could reflect Hb H disease's severity. In this study, we recruited 48 deletional and 47 nondeletional Hb H disease patients, along with 109 normal controls, for telomere length assessment. The leukocyte telomere length was assessed by monochromatic multiplex real-time PCR and reported as the telomere to single-copy gene (T/S) ratio. When telomere length was adjusted for age, the analysis of covariance between the control and the two Hb H disease groups revealed no significant difference. However, the telomere shortening rate was more rapid in the nondeletional Hb H disease group than those of the control and deletional Hb H disease groups. Gender analysis found that male patients have a significantly lower T/S ratio than females in the nondeletional group but not in the control and deletional groups. In the two disease groups, the T/S ratio was not influenced by ferritin level or transfusion burden but was positively correlated with the absolute reticulocyte count.
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Affiliation(s)
- Panadeekarn Panjawatanan
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Internal Medicine, Bassett Medical Center, Cooperstown, NY, USA
| | - Pimlak Charoenkwan
- Division of Hematology and Oncology, Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Adisak Tantiworawit
- Division of Hematology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | | | - Kelly E Perry
- Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Wirote Tuntiwechapikul
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
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110
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Banevicius M, Gedvilaite G, Vilkeviciute A, Kriauciuniene L, Zemaitiene R, Liutkeviciene R. Association of relative leukocyte telomere length and genetic variants in telomere-related genes ( TERT, TERT-CLPTM1, TRF1, TNKS2, TRF2) with atrophic age-related macular degeneration. Ophthalmic Genet 2021; 42:189-194. [PMID: 33565341 DOI: 10.1080/13816810.2021.1881976] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background: In an experimental model, telomere shortening inhibits neovascularization. It is thus possible that telomere shortening might have a role in the pathogenesis of geographic atrophy in case of age-related macular degeneration (AMD). This is why we aimed to find any associated differences of telomere length and genetic variants in telomere-related genes (TERT, TERT-CLPTM1, TRF1, TNKS2, and TRF2) in patients with atrophic AMD compared to healthy controls.Methods: The study enrolled patients with atrophic AMD (n = 56) and healthy (n = 73) controls. Samples of DNA from peripheral blood leukocytes were extracted by DNA salting-out method. The genotyping of TERT rs2736098, rs401681 in TERT-CLPTM1 locus, TRF1 rs1545827, rs10107605, TNKS2 rs10509637, rs10509639, and TRF2 rs251796 and relative leukocyte telomere length (T/S) measurement were carried out using a real-time polymerase chain reaction method. The results were assessed using the statistical analysis method of "IBM SPSS Statistics 20.0".Results: We found statistically significantly higher T/S in atrophic AMD patients than in healthy controls (T/S, median (IQR): 1.638 (1.110) vs. 0.764 (0.801), p < .001). Also, statistically significant differences were found in TRF1 rs10107605 allele (A and C) distributions between the atrophic AMD and control groups (88.36% and 11.64% vs. 95.54% and 4.46%, respectively, p = .041), as well as between the short telomere and long telomere groups (86.92% and 13.08% vs. 96.09% and 3.91%, respectively, p = .008).Conclusions: Our research revealed the leukocyte telomere length having a role in atrophic AMD development, also the association between TRF1 rs10107605 and the telomere length.
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Affiliation(s)
- Mantas Banevicius
- Department of Ophthalmology, Lithuanian University of Health Sciences, Medical Academy, Lithuania
| | - Greta Gedvilaite
- Neuroscience Institute, Lithuanian University of Health Sciences, Medical Academy, Kaunas, Lithuania
| | - Alvita Vilkeviciute
- Department of Ophthalmology, Lithuanian University of Health Sciences, Medical Academy, Lithuania
| | - Loresa Kriauciuniene
- Department of Ophthalmology, Lithuanian University of Health Sciences, Medical Academy, Lithuania.,Neuroscience Institute, Lithuanian University of Health Sciences, Medical Academy, Kaunas, Lithuania
| | - Reda Zemaitiene
- Neuroscience Institute, Lithuanian University of Health Sciences, Medical Academy, Kaunas, Lithuania
| | - Rasa Liutkeviciene
- Department of Ophthalmology, Lithuanian University of Health Sciences, Medical Academy, Lithuania.,Neuroscience Institute, Lithuanian University of Health Sciences, Medical Academy, Kaunas, Lithuania
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111
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Gutierrez-Rodrigues F, Alves-Paiva RM, Scatena NF, Martinez EZ, Scheucher PS, Calado RT. Association between leukocyte telomere length and sex by quantile regression analysis. Hematol Transfus Cell Ther 2021; 44:346-351. [PMID: 33593713 PMCID: PMC9477766 DOI: 10.1016/j.htct.2020.12.005] [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: 09/21/2020] [Revised: 11/20/2020] [Accepted: 12/03/2020] [Indexed: 12/02/2022] Open
Abstract
Introduction Telomere length (TL) is a biomarker of cellular proliferative history. In healthy individuals, leukocyte TL shortens with age and associates with the lifespan of men and women. However, most of studies had used linear regression models to address the association of the TL attrition, aging and sex. Methods We evaluated the association between the TL, aging and sex in a cohort of 180 healthy subjects by quantile regression. The TL of nucleated blood cells was measured by fluorescent in situ hypridization (flow-FISH) in a cohort of 89 men, 81 women, and 10 umbilical cord samples. The results were validated by quantitative polymerase chain reaction (qPCR) and compared to a linear regression analysis. Results By quantile regression, telomere dynamics slightly differed between sexes with aging: women had longer telomeres at birth and slower attrition rate than men until the sixth decade of life; after that, TL eroded faster and became shorter than that in men. These differences were not observed by linear regression analysis, as the overall telomere attrition rates in women and men were similar (42 pb per year, p < 0.0001 vs. 45 pb kb per year, p < 0.0001). Also, qPCR did not recapitulate flow-FISH findings, as the telomere dynamics by qPCR followed a linear model. Conclusion The quantile regression analysis accurately reproduced a third-order polynomial TL attrition rate in both women and men, but it depended on the technique applied to measure TL. The Flow-FISH reproduced the expected telomere dynamics through life and, differently from the qPCR, was able to detect the subtle TL variations associated with sex and aging.
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Affiliation(s)
| | | | - Natália F Scatena
- Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil
| | - Edson Z Martinez
- Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil
| | - Priscila S Scheucher
- Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil
| | - Rodrigo T Calado
- Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil
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Leukocyte Telomere Length Is Not Reduced in Children and Adults with Cystic Fibrosis but Associates with Clinical Characteristics-A Cross-Sectional Study. J Clin Med 2021; 10:jcm10040590. [PMID: 33557298 PMCID: PMC7915028 DOI: 10.3390/jcm10040590] [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: 12/16/2020] [Revised: 01/23/2021] [Accepted: 02/02/2021] [Indexed: 11/17/2022] Open
Abstract
We hypothezied that telomere length is considerably altered in cystic fibrosis (CF) patients compared to healthy subjects (HS), and that leukocyte telomere length variation reflects the severity of CF. Relative telomere length (RTL) was assessed by qPCR in 70 children aged 5-10 (34 CF; 36 HS) and 114 adults aged 18-45 (53 CF; 61 HS). Telomere length was similar in CF and HS (median (interquartile range): 0.799 (0.686-0.950) vs. 0.831 (0.707-0.986); p = 0.5283) both in children and adults. In adults, women had longer telomeres than men (0.805 (0.715-0.931) vs. 0.703 (0.574-0.790); p = 0.0002). Patients treated with inhaled corticosteroids had a shorter RTL compared to those without steroid therapy (0.765 (0.664-0.910) vs. 0.943 (0.813-1.191); p = 0.0007) and this finding remained significant after adjusting for gender, age, BMI, and child/adult status (p = 0.0003). Shorter telomeres were independently associated with the presence of comorbidities (0.763 (0.643-0.905) vs. 0.950 (0.783-1.130); p = 0.0006) and antibiotic treatment at the moment of blood sampling (0.762 (0.648-0.908) vs. 0.832 (0.748-1.129); p = 0.0172). RTL correlated with number of multiple-day hospitalizations (rho = -0.251; p = 0.0239), as well as number of hospitalization days (rho = -0.279; p = 0.0113). Leukocyte RTL in children and adults with CF was not shorter than in healthy controls, and did not seem to have any potential as a predictor of CF survival. However, it inversely associated with the investigated clinical characteristics.
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113
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Cheng F, Carroll L, Joglekar MV, Januszewski AS, Wong KK, Hardikar AA, Jenkins AJ, Ma RCW. Diabetes, metabolic disease, and telomere length. Lancet Diabetes Endocrinol 2021; 9:117-126. [PMID: 33248477 DOI: 10.1016/s2213-8587(20)30365-x] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 10/01/2020] [Accepted: 10/08/2020] [Indexed: 02/06/2023]
Abstract
Telomeres are regions of repetitive nucleotide sequences at the ends of chromosomes. Telomere length is a marker of DNA damage, which is often considered a biomarker for biological ageing, and has also been linked with cardiovascular disease, diabetes, and cancer. Emerging studies have highlighted the role of genetic and environmental factors, and explored the effect of modulating telomere length. We provide an overview of studies to date on diabetes and telomere length, and compare different methods and assays for evaluating telomere length and telomerase activity. We highlight the limitations of current studies and areas that warrant further research to unravel the link between diabetes and telomere length. The value of adding telomere length to clinical risk factors to improve risk prediction of diabetes and related complications also merits further investigation.
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Affiliation(s)
- Feifei Cheng
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China; Laboratory for Molecular Epidemiology in Diabetes, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Luke Carroll
- NHMRC Clinical Trial Centre, University of Sydney, Sydney, NSW, Australia
| | - Mugdha V Joglekar
- NHMRC Clinical Trial Centre, University of Sydney, Sydney, NSW, Australia; School of Medicine, Western Sydney University, Campbelltown, NSW, Australia
| | | | - Kwun Kiu Wong
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China; Laboratory for Molecular Epidemiology in Diabetes, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Anandwardhan A Hardikar
- NHMRC Clinical Trial Centre, University of Sydney, Sydney, NSW, Australia; School of Medicine, Western Sydney University, Campbelltown, NSW, Australia.
| | - Alicia J Jenkins
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China; NHMRC Clinical Trial Centre, University of Sydney, Sydney, NSW, Australia.
| | - Ronald C W Ma
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China; Laboratory for Molecular Epidemiology in Diabetes, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China; Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China; Chinese University of Hong Kong-Shanghai Jiao Tong University Joint Research Centre in Diabetes Genomics and Precision Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China; NHMRC Clinical Trial Centre, University of Sydney, Sydney, NSW, Australia.
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Hautekiet P, Nawrot TS, Janssen BG, Martens DS, De Clercq EM, Dadvand P, Plusquin M, Bijnens EM, Saenen ND. Child buccal telomere length and mitochondrial DNA content as biomolecular markers of ageing in association with air pollution. ENVIRONMENT INTERNATIONAL 2021; 147:106332. [PMID: 33388564 DOI: 10.1016/j.envint.2020.106332] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 12/09/2020] [Accepted: 12/10/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Pro-inflammatory conditions such as air pollution might induce biological ageing. However, the available evidence on such an impact in children is still very scarce. We studied in primary schoolchildren the association of ambient residential air pollution exposure with telomere length (TL) and mitochondrial DNA content (mtDNAc), two important targets of the core axis of ageing. METHODS Between 2012 and 2014, buccal TL and mtDNAc were repeatedly assessed using qPCR in 197 Belgian primary schoolchildren (mean age 10.3 years) as part of the COGNAC study. At the child's residence, recent (week), sub-chronic (month) and chronic (year) exposure to nitrogen dioxide (NO2), particulate matter ≤ 2.5 µm (PM2.5) and black carbon (BC) were estimated using a high resolution spatiotemporal model. A mixed-effects model with school and subject as random effect was used while adjusting for a priori chosen covariates. RESULTS An interquartile range (IQR) increment (1.9 µg/m3) in chronic PM2.5 exposure was associated with a 8.9% (95% CI: -15.4 to -1.9%) shorter TL. In contrast to PM2.5, chronic exposure to BC and NO2 was not associated with TL but recent exposure to BC and NO2 showed significant inverse associations with TL: an IQR increment in recent exposure to BC (0.9 µg/m3) and NO2 (10.2 µg/m3) was associated with a 6.2% (95% CI: -10.6 to -1.6%) and 6.4% (95% CI: -11.8 to -0.7%) shorter TL, respectively. Finally, an IQR increment in chronic PM2.5 exposure was associated with a 12.7% (95% CI: -21.7 to -2.6%) lower mtDNAc. However, no significant associations were seen for NO2 and BC or for other exposure windows. CONCLUSION Chronic exposure to PM2.5 below the EU threshold was associated with child's shorter buccal TL and lower mtDNAc, while traffic-related pollutants (BC and NO2) showed recent effects on telomere biology. Our data add to the literature on air pollution-induced effects of TL and mtDNAc, two measures part of the core axis of cellular ageing, from early life onwards.
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Affiliation(s)
- Pauline Hautekiet
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, BE-3590 Hasselt, Belgium; Risk and Health Impact Assessment, Sciensano, Juliette Wytsmanstraat 14, BE-1050 Brussels, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, BE-3590 Hasselt, Belgium; Department of Public Health & Primary Care, University of Leuven (KU Leuven), O&N I Herestraat 49 - bus 706, BE-3000 Leuven, Belgium.
| | - Bram G Janssen
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, BE-3590 Hasselt, Belgium
| | - Dries S Martens
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, BE-3590 Hasselt, Belgium
| | - Eva M De Clercq
- Risk and Health Impact Assessment, Sciensano, Juliette Wytsmanstraat 14, BE-1050 Brussels, Belgium
| | - Payam Dadvand
- ISGlobal, Campus Mar, Dr Aiguader 88, ES-08003 Barcelona, Spain; Pompeu Fabra University, Doctor Aiguader 80, 08003 Barcelona, Catalonia, Spain; Ciber on Epidemiology and Public Health (CIBERESP), Melchor Fernández Almagro 3-5, 28029 Madrid, Spain
| | - Michelle Plusquin
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, BE-3590 Hasselt, Belgium
| | - Esmée M Bijnens
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, BE-3590 Hasselt, Belgium
| | - Nelly D Saenen
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, BE-3590 Hasselt, Belgium; Risk and Health Impact Assessment, Sciensano, Juliette Wytsmanstraat 14, BE-1050 Brussels, Belgium
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Dynamics of leukocyte telomere length in adults aged 50 and older: a longitudinal population-based cohort study. GeroScience 2021; 43:645-654. [PMID: 33469834 PMCID: PMC8110630 DOI: 10.1007/s11357-020-00320-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 12/21/2020] [Indexed: 10/22/2022] Open
Abstract
It is well established from previous cross-sectional studies that telomeres shorten with age. However, due to a considerable inter-individual variation in telomere length (TL), its relationship with biological aging is difficult to unpick. Longitudinal repeated assessments of TL changes within individuals should augment our understanding of TL dynamics in aging. This study disentangles within- and inter-individual effects of age on leukocyte telomere length (LTL) dynamics in a large population-based cohort of older adults. A total of 4053 subjects aged 50 and older from the WHO Study on global AGEing and adult health (SAGE) in Shanghai were studied. Relative LTL (T/S ratio) was measured at baseline (2009-2010) and follow-up (2017-2018) by quantitative real-time polymerase chain reaction. We used linear random slope models to analyze LTL dynamics in relation to age and sex and within-subject centering method to distinguish within- versus between-subject effects. We observed LTL shortening in 66.32%, maintenance in 11.23%, and elongation in 22.45% of the study participants. LTL declined significantly with age both cross-sectionally and longitudinally. More importantly, the longitudinal decline in LTL was much greater than the cross-sectional decline (- 0.017 (p < 0.001) versus - 0.002 (p < 0.001) per year). Furthermore, women had a lower within-subject LTL shortening rate than men (- 0.014 versus - 0.020 per year, p < 0.001). The within-individual longitudinal decline in LTL was much greater than the inter-individual cross-sectional decline, indicating that chronological age might impose a greater impact on LTL shortening than other influencing factors combined. Moreover, women showed a lower within-individual LTL shortening rate than men.
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Starnino L, Dupuis G, Busque L, Bourgoin V, Dubé MP, Busseuil D, D'Antono B. The associations of hostility and defensiveness with telomere length are influenced by sex and health status. Biol Sex Differ 2021; 12:2. [PMID: 33397445 PMCID: PMC7783995 DOI: 10.1186/s13293-020-00349-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/10/2020] [Indexed: 12/16/2022] Open
Abstract
Background Shorter telomere length (TL) may indicate premature cellular aging and increased risk for disease. While there is substantial evidence for shorter TL in individuals suffering from psychiatric disorders, data is scarce on maladaptive personality traits related to coronary artery disease (CAD). The purpose of this study was to evaluate the association of TL with hostility and defensiveness in individuals with CAD or other non-cardiovascular illnesses and whether associations were moderated by CAD status and sex. Methods One thousand thirty-six individuals (Mage = 65.40 ± 6.73 years) with and without CAD completed the Marlowe-Crowne Social Desirability Scale and the Cook–Medley Hostility Scale. Relative TL was measured via quantitative polymerase chain reaction of total genomic DNA samples. Analyses involved hierarchical regressions on TL, performed separately for hostility and defensiveness, controlling for pertinent sociodemographic, behavioural, and medical risk factors. Separate analyses were performed on 25 healthy participants. Results A hostility by sex interaction emerged (β = − .08, p = .006) in the patient groups, where greater hostility was associated with shorter TL in women only (p < .01). A Defensiveness by CAD status interaction (β = − .06, p = .049) revealed longer TL in more defensive CAD patients only (p = .06). In healthy men, shorter TL was observed in those with greater defensiveness (β = .52, p = .006) but lower hostility (β = − .43, p = .049). Conclusion Hostility and defensiveness are differentially associated with TL as a function of sex and health status. The implication of these results for health remains to be determined, but propose an additional pathway through which the effect of maladaptive personality traits may contribute to CV and other disease.
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Affiliation(s)
- Louisia Starnino
- Research Center, Montreal Heart Institute, 5000 Rue Bélanger, Montréal, QC, H1T 1C8, Canada.,Department of Psychology, Université du Québec à Montréal, Montreal, Canada
| | - Gilles Dupuis
- Department of Psychology, Université du Québec à Montréal, Montreal, Canada
| | - Lambert Busque
- Research Center, Hematology Division, Hôpital Maisonneuve-Rosemont, Université de Montréal, Montreal, Canada
| | - Vincent Bourgoin
- Research Center, Hematology Division, Hôpital Maisonneuve-Rosemont, Université de Montréal, Montreal, Canada
| | - Marie-Pierre Dubé
- Research Center, Montreal Heart Institute, 5000 Rue Bélanger, Montréal, QC, H1T 1C8, Canada
| | - David Busseuil
- Research Center, Montreal Heart Institute, 5000 Rue Bélanger, Montréal, QC, H1T 1C8, Canada
| | - Bianca D'Antono
- Research Center, Montreal Heart Institute, 5000 Rue Bélanger, Montréal, QC, H1T 1C8, Canada. .,Department of Psychology, Université du Québec à Montréal, Montreal, Canada. .,Department of Psychology, Université de Montréal Pavillon Marie-Victorin, Montreal, Canada.
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Silva Pinto BG, Marques Soares TK, Azevedo Linhares M, Castilhos Ghisi N. Occupational exposure to pesticides: Genetic danger to farmworkers and manufacturing workers - A meta-analytical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 748:141382. [PMID: 32818891 DOI: 10.1016/j.scitotenv.2020.141382] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/27/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
In the last decades, the use of pesticides has grown worldwide. However, there is great worry about the impact of pesticides on human health, due to their wide distribution and possible long-term effects. Complex mixtures with different formulations are often used, including a variety of genotoxic compounds. Thus, genotoxicity tests form an important part of cancer research and risk assessment of potential carcinogens. This study aimed to conduct a meta-analytical review of possible genetic damage resulting from occupational exposure in farmworkers and workers employed in pesticide production, both ever in comparison to non-exposed people, using comet assay (CA), micronucleus test (MN) and telomere length (TL) data available in the scientific literature. A total of 145 datasets were evaluated. The results showed that the occupationally exposed workers had more DNA damage in CA and MN than non-exposed workers. The TL result did not show difference between groups. When the data were categorized by gender (male, female or both), crop (general, tobacco, fruits, soybeans, cotton) and occupation (manufacturing or farmworkers), the study found that the exposed group always presented higher damage than the non-exposed individuals, in CA and MN. More studies with TL are needed to obtain a more precise response, and to segregate the effect of tobacco farming from pesticide exposure. When TL was segregated by gender, women and men presented difference between exposed and non-exposed groups. In general, the publication bias impact was modest. If all relevant studies were included, the key finding (i.e. the effect of pesticide exposure increases the genotoxicity and mutation rate) would probably remain unchanged. Lastly, it is important to highlight the importance of the use of personal protective equipment (PPE), and offer safer options to farmworkers (e.g. organic farming or less toxic alternatives).
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Affiliation(s)
- Bruna Gabriele Silva Pinto
- Universidade Tecnológica Federal do Paraná (UTFPR), Estrada para Boa Esperança, s/n, km 04, P.O. Box 157, CEP: 85660-000 Dois Vizinhos, PR, Brazil.
| | - Tábatta Kim Marques Soares
- Universidade Tecnológica Federal do Paraná (UTFPR), Estrada para Boa Esperança, s/n, km 04, P.O. Box 157, CEP: 85660-000 Dois Vizinhos, PR, Brazil.
| | - Maristela Azevedo Linhares
- Centro de Tecnologia em Saúde e Meio Ambiente, Instituto de Tecnologia do Paraná (Tecpar), Rua Professor Algacyr Munhoz Mader, 3775, CEP: 81350-10 Curitiba, PR, Brazil.
| | - Nédia Castilhos Ghisi
- Programa de Pós-Graduação em Biotecnologia, Universidade Tecnológica Federal do Paraná (UTFPR), Estrada para Boa Esperança, s/n, km 04, P.O. Box 157, CEP: 85660-000 Dois Vizinhos, PR, Brazil.
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118
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Tschirren B, Romero-Haro AÁ, Zahn S, Criscuolo F. Sex-specific effects of experimental ectoparasite infestation on telomere length in great tit nestlings. J Evol Biol 2020; 34:584-589. [PMID: 33226680 DOI: 10.1111/jeb.13744] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 01/17/2023]
Abstract
Telomere length is a biomarker of biological ageing and lifespan in various vertebrate taxa. Evidence is accumulating that telomeres shorten more rapidly when an individual is exposed to environmental stressors. Parasites are potent selective agents that can cause physiological stress directly or indirectly through the activation of the host's immune system. Yet to date, empirical evidence for a role of parasites in telomere dynamics in natural populations is limited. Here, we show experimentally that exposure to ectoparasitic hen fleas (Ceratophyllus gallinae) during growth results in shorter telomeres in female, but not male, great tit (Parus major) nestlings. Females had longer telomeres than males when growing up in experimentally deparasitized nests but, likely because of the sex-specific effects of ectoparasitism on telomere length, this sexual dimorphism was absent in birds growing up in experimentally infested nests. Our results provide the first experimental evidence for a role of ectoparasitism in telomere dynamics in a natural vertebrate population, and suggest that the costs of infection manifest in sex-specific ways.
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Affiliation(s)
- Barbara Tschirren
- Centre for Ecology and Conservation, University of Exeter, Penryn, UK
| | | | - Sandrine Zahn
- CNRS, IPHC UMR 7178, Université de Strasbourg, Strasbourg, France
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Pavanello S, Campisi M, Mastrangelo G, Hoxha M, Bollati V. The effects of everyday-life exposure to polycyclic aromatic hydrocarbons on biological age indicators. Environ Health 2020; 19:128. [PMID: 33272294 PMCID: PMC7713168 DOI: 10.1186/s12940-020-00669-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 10/16/2020] [Indexed: 05/25/2023]
Abstract
BACKGROUND Further knowledge on modifiable aging risk factors is required to mitigate the increasing burden of age-related diseases in a rapidly growing global demographic of elderly individuals. We explored the effect of everyday exposure to polycyclic aromatic hydrocarbons (PAHs), which are fundamental constituents of air pollution, on cellular biological aging. This was determined via the analysis of leukocyte telomere length (LTL), mitochondrial DNA copy number (LmtDNAcn), and by the formation of anti-benzo[a]pyrene diolepoxide (B[a]PDE-DNA) adducts. METHODS The study population consisted of 585 individuals living in North-East Italy. PAH exposure (diet, indoor activities, outdoor activities, traffic, and residential exposure) and smoking behavior were assessed by questionnaire and anti-B[a]PDE-DNA by high-performance-liquid-chromatography. LTL, LmtDNAcn and genetic polymorphisms [glutathione S-transferase M1 and T1 (GSTM1; GSTT1)] were measured by polymerase chain reaction. Structural equation modelling analysis evaluated these complex relationships. RESULTS Anti-B[a]PDE-DNA enhanced with PAH exposure (p = 0.005) and active smoking (p = 0.0001), whereas decreased with detoxifying GSTM1 (p = 0.021) and in females (p = 0.0001). Subsequently, LTL and LmtDNAcn reduced with anti-B[a]PDE-DNA (p = 0.028 and p = 0.018), particularly in males (p = 0.006 and p = 0.0001). Only LTL shortened with age (p = 0.001) while elongated with active smoking (p = 0.0001). Besides this, the most significant determinants of PAH exposure that raised anti-B[a]PDE-DNA were indoor and diet (p = 0.0001), the least was outdoor (p = 0.003). CONCLUSION New findings stemming from our study suggest that certain preventable everyday life exposures to PAHs reduce LTL and LmtDNAcn. In particular, the clear association with indoor activities, diet, and gender opens new perspectives for tailored preventive measures in age-related diseases. CAPSULE Everyday life exposure to polycyclic aromatic hydrocarbons reduces leukocyte telomere length and mitochondrial DNA copy number through anti-B[a]PDE-DNA adduct formation.
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Affiliation(s)
- Sofia Pavanello
- Medicina del Lavoro, Dipartimento di Scienze Cardio- Toraco- Vascolari e Sanità Pubblica, Università di Padova, Padova, Italy
- Azienda Ospedaliera di Padova, Unità di Medicina del Lavoro, Padova, Italy
| | - Manuela Campisi
- Medicina del Lavoro, Dipartimento di Scienze Cardio- Toraco- Vascolari e Sanità Pubblica, Università di Padova, Padova, Italy
| | - Giuseppe Mastrangelo
- Medicina del Lavoro, Dipartimento di Scienze Cardio- Toraco- Vascolari e Sanità Pubblica, Università di Padova, Padova, Italy
| | - Mirjam Hoxha
- EPIGET – Epidemiology, Epigenetics and Toxicology Lab, Dipartimento di Scienze Cliniche e di Comunità, Università degli Studi di Milano, Milan, Italy
| | - Valentina Bollati
- EPIGET – Epidemiology, Epigenetics and Toxicology Lab, 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, Milano, Italy
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Huang JW, Xie C, Niu Z, He LJ, Li JJ. The relation between Helicobacter pylori immunoglobulin G seropositivity and leukocyte telomere length in US adults from NHANES 1999-2000. Helicobacter 2020; 25:e12760. [PMID: 33002310 DOI: 10.1111/hel.12760] [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: 04/06/2020] [Revised: 07/31/2020] [Accepted: 09/04/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Helicobacter pylori (H pylori) immunoglobulin G (IgG) seropositivity is prevalent but its relation with leukocyte telomere length (LTL), a cellular aging biomarker, is unclear. METHODS Among 3,472 participants from the National Health and Nutrition Examination Survey (NHANES) cycle 1999-2000, LTL was measured with the quantitative polymerase chain reaction. H pylori IgG was measured by enzyme-linked immunosorbent assays and defined as seropositivity with an immune status ratio score > 0.9. We used linear regression models to examine the relation of H pylori IgG seropositivity with continuous LTL and logistic regression for the relation with short LTL (<10th percentile of the population distribution) adjusting for potential confounders. We stratified the analyses by a priori selected variables. RESULTS Population prevalence of H pylori IgG seropositivity was 31.5% in the overall population with higher prevalence found in those with older age, other races than non-Hispanic whites, lower education, and being born out of the United States. Continuous LTL was non-significantly shorter in those with H Pylori IgG seropositivity versus seronegativity (mean difference = -40.3 bp, 95% CI: -112.4, 31.9). This difference was not significant after adjusting for potential confounders nor stratifying by potential effect modifiers. H Pylori IgG seropositivity was significantly associated with short LTL among the elderly (55-75 years, adjusted OR: 3.06, 95% CI: 1.17, 7.99), but not in the overall population (OR: 1.28, 95% CI: 0.81-2.02). CONCLUSION H Pylori IgG seropositivity was not associated with continuous LTL in the general population but may be associated with an excessively short LTL in the elderly.
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Affiliation(s)
- Jin-Wen Huang
- Department of Gastroenterology, People's Hospital of Longhua District of Shenzhen, Shenzhen, China
| | - Chuanbo Xie
- Cancer Prevention Cancer, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Zhongzheng Niu
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, the State University of New York at Buffalo, Buffalo, NY, USA
| | - Long-Jun He
- Department of Endoscopy, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Jian-Jun Li
- Department of Endoscopy, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
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Luxton JJ, McKenna MJ, Taylor LE, George KA, Zwart SR, Crucian BE, Drel VR, Garrett-Bakelman FE, Mackay MJ, Butler D, Foox J, Grigorev K, Bezdan D, Meydan C, Smith SM, Sharma K, Mason CE, Bailey SM. Temporal Telomere and DNA Damage Responses in the Space Radiation Environment. Cell Rep 2020; 33:108435. [PMID: 33242411 DOI: 10.1016/j.celrep.2020.108435] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/15/2020] [Accepted: 11/04/2020] [Indexed: 02/08/2023] Open
Abstract
Telomeres, repetitive terminal features of chromosomes essential for maintaining genome integrity, shorten with cell division, lifestyle factors and stresses, and environmental exposures, and so they provide a robust biomarker of health, aging, and age-related diseases. We assessed telomere length dynamics (changes over time) in three unrelated astronauts before, during, and after 1-year or 6-month missions aboard the International Space Station (ISS). Similar to our results for National Aeronautics and Space Administration's (NASA's) One-Year Mission twin astronaut (Garrett-Bakelman et al., 2019), significantly longer telomeres were observed during spaceflight for two 6-month mission astronauts. Furthermore, telomere length shortened rapidly after return to Earth for all three crewmembers and, overall, telomere length tended to be shorter after spaceflight than before spaceflight. Consistent with chronic exposure to the space radiation environment, signatures of persistent DNA damage responses were also detected, including mitochondrial and oxidative stress, inflammation, and telomeric and chromosomal aberrations, which together provide potential mechanistic insight into spaceflight-specific telomere elongation.
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Affiliation(s)
- Jared J Luxton
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA; Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, USA
| | - Miles J McKenna
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA; Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, USA
| | - Lynn E Taylor
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
| | | | - Sara R Zwart
- University of Texas Medical Branch, Galveston, TX, USA
| | | | - Viktor R Drel
- Center for Renal Precision Medicine, UT Health, San Antonio, TX, USA
| | - Francine E Garrett-Bakelman
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA; Department of Medicine, University of Virginia, Charlottesville, VA, USA; Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA, USA
| | - Matthew J Mackay
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Daniel Butler
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Jonathan Foox
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Kirill Grigorev
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Daniela Bezdan
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Cem Meydan
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | | | - Kumar Sharma
- Center for Renal Precision Medicine, UT Health, San Antonio, TX, USA
| | - Christopher E Mason
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA; The WorldQuant Initiative for Quantitative Prediction, Weill Cornell Medicine, New York, NY, USA; The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, USA.
| | - Susan M Bailey
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA; Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, USA.
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Luxton JJ, McKenna MJ, Lewis A, Taylor LE, George KA, Dixit SM, Moniz M, Benegas W, Mackay MJ, Mozsary C, Butler D, Bezdan D, Meydan C, Crucian BE, Zwart SR, Smith SM, Mason CE, Bailey SM. Telomere Length Dynamics and DNA Damage Responses Associated with Long-Duration Spaceflight. Cell Rep 2020; 33:108457. [PMID: 33242406 DOI: 10.1016/j.celrep.2020.108457] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/31/2020] [Accepted: 11/06/2020] [Indexed: 12/12/2022] Open
Abstract
Telomere length dynamics and DNA damage responses were assessed before, during, and after one-year or shorter duration missions aboard the International Space Station (ISS) in a comparatively large cohort of astronauts (n = 11). Although generally healthy individuals, astronauts tended to have significantly shorter telomeres and lower telomerase activity than age- and sex-matched ground controls before and after spaceflight. Although telomeres were longer during spaceflight irrespective of mission duration, telomere length shortened rapidly upon return to Earth, and overall astronauts had shorter telomeres after spaceflight than they did before; inter-individual differences were identified. During spaceflight, all crewmembers experienced oxidative stress, which positively correlated with telomere length dynamics. Significantly increased frequencies of chromosomal inversions were observed during and after spaceflight; changes in cell populations were also detected. We propose a telomeric adaptive response to chronic oxidative damage in extreme environments, whereby the telomerase-independent Alternative Lengthening of Telomeres (ALT) pathway is transiently activated in normal somatic cells.
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Affiliation(s)
- Jared J Luxton
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA; Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, USA
| | - Miles J McKenna
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA; Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, USA
| | - Aidan Lewis
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
| | - Lynn E Taylor
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
| | | | - Sameer M Dixit
- Center for Molecular Dynamics - Nepal (CMDN), Kathmandu, Nepal
| | | | | | - Matthew J Mackay
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Christopher Mozsary
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Daniel Butler
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Daniela Bezdan
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
| | - Cem Meydan
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA; The WorldQuant Initiative for Quantitative Prediction, Weill Cornell Medicine, New York, NY, USA; The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, USA
| | - Brian E Crucian
- Human Health and Performance Directorate, NASA Johnson Space Center, Houston, TX, USA
| | - Sara R Zwart
- University of Texas Medical Branch, Galveston, TX, USA
| | - Scott M Smith
- Human Health and Performance Directorate, NASA Johnson Space Center, Houston, TX, USA
| | - Christopher E Mason
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA; The WorldQuant Initiative for Quantitative Prediction, Weill Cornell Medicine, New York, NY, USA; The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine, Weill Cornell Medicine, New York, NY, USA.
| | - Susan M Bailey
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA; Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, 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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124
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Hunt SC, Hansen MEB, Verhulst S, McQuillan MA, Beggs W, Lai TP, Mokone GG, Mpoloka SW, Meskel DW, Belay G, Nyambo TB, Abnet CC, Yeager M, Chanock SJ, Province MA, Williams SM, Aviv A, Tishkoff SA. Genetics and geography of leukocyte telomere length in sub-Saharan Africans. Hum Mol Genet 2020; 29:3014-3020. [PMID: 32821950 PMCID: PMC7645709 DOI: 10.1093/hmg/ddaa187] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 07/09/2020] [Accepted: 08/15/2020] [Indexed: 01/10/2023] Open
Abstract
Leukocyte telomere length (LTL) might be causal in cardiovascular disease and major cancers. To elucidate the roles of genetics and geography in LTL variability across humans, we compared LTL measured in 1295 sub-Saharan Africans (SSAs) with 559 African-Americans (AAms) and 2464 European-Americans (EAms). LTL differed significantly across SSAs (P = 0.003), with the San from Botswana (with the oldest genomic ancestry) having the longest LTL and populations from Ethiopia having the shortest LTL. SSAs had significantly longer LTL than AAms [P = 6.5(e-16)] whose LTL was significantly longer than EAms [P = 2.5(e-7)]. Genetic variation in SSAs explained 52% of LTL variance versus 27% in AAms and 34% in EAms. Adjustment for genetic variation removed the LTL differences among SSAs. LTL genetic variation among SSAs, with the longest LTL in the San, supports the hypothesis that longer LTL was ancestral in humans. Identifying factors driving LTL variation in Africa may have important ramifications for LTL-associated diseases.
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Affiliation(s)
- Steven C Hunt
- Department of Genetic Medicine, Weill Cornell Medicine, Doha, Qatar
| | - Matthew E B Hansen
- Department of Genetics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Simon Verhulst
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - Michael A McQuillan
- Department of Genetics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - William Beggs
- Department of Genetics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Tsung-Po Lai
- Center of Human Development and Aging, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, 07103, USA
| | - Gaonyadiwe G Mokone
- Faculty of Medicine, Department of Biomedical Sciences, University of Botswana, Gaborone, Botswana
| | | | | | - Gurja Belay
- Department of Biology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Thomas B Nyambo
- Department of Biochemistry, Kampala International University, Tanzania
| | - Christian C Abnet
- Cancer Genomics Research Laboratory, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, 20892,USA
| | - Meredith Yeager
- Cancer Genomics Research Laboratory, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, 20892,USA
| | - Stephen J Chanock
- Cancer Genomics Research Laboratory, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, 20892,USA
| | - Michael A Province
- Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, MO, 63108, USA
| | - Scott M Williams
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Abraham Aviv
- Center of Human Development and Aging, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, 07103, USA
| | - Sarah A Tishkoff
- Department of Genetics, University of Pennsylvania, Philadelphia, PA, 19104, USA.,Department of Biology, University of Pennsylvania, Philadelphia, PA, 19104, USA
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125
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Remot F, Ronget V, Froy H, Rey B, Gaillard JM, Nussey DH, Lemaître JF. No sex differences in adult telomere length across vertebrates: a meta-analysis. ROYAL SOCIETY OPEN SCIENCE 2020; 7:200548. [PMID: 33391781 PMCID: PMC7735339 DOI: 10.1098/rsos.200548] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 09/29/2020] [Indexed: 06/12/2023]
Abstract
In many mammalian species, females live on average longer than males. In humans, women have consistently longer telomeres than men, and this has led to speculation that sex differences in telomere length (TL) could play a role in sex differences in longevity. To address the generality and drivers of patterns of sex differences in TL across vertebrates, we performed meta-analyses across 51 species. We tested two main evolutionary hypotheses proposed to explain sex differences in TL, namely the heterogametic sex disadvantage and the sexual selection hypotheses. We found no support for consistent sex differences in TL between males and females among mammal, bird, fish and reptile species. This absence of sex differences in TL across different classes of vertebrates does not support the heterogametic sex disadvantage hypothesis. Likewise, the absence of any negative effect of sexual size dimorphism on male TL suggests that sexual selection is not likely to mediate the magnitude of sex differences in TL across vertebrates. Finally, the comparative analyses we conducted did not detect any association between sex differences in TL and sex differences in longevity, which does not support the idea that sex differences in TL could explain the observed sex differences in longevity.
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Affiliation(s)
- Florentin Remot
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive, UMR5558, F-69622 Villeurbanne, France
| | - Victor Ronget
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive, UMR5558, F-69622 Villeurbanne, France
| | - Hannah Froy
- Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
- Centre for Biodiversity Dynamics, Norwegian University of Science and Technology, Trondheim, Norway
| | - Benjamin Rey
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive, UMR5558, F-69622 Villeurbanne, France
| | - Jean-Michel Gaillard
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive, UMR5558, F-69622 Villeurbanne, France
| | - Daniel H. Nussey
- Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
| | - Jean-François Lemaître
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive, UMR5558, F-69622 Villeurbanne, France
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126
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Deng S, Liu S, Xu S, He Y, Zhou X, Ni G. Shorter Telomere Length in Peripheral Blood Leukocytes Is Associated with Post-Traumatic Chronic Osteomyelitis. Surg Infect (Larchmt) 2020; 21:773-777. [PMID: 32125944 DOI: 10.1089/sur.2019.326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Background: This study investigated the association between post-traumatic chronic osteomyelitis (COM) and peripheral leukocyte telomere length (PLTL) and explored factors associated with PLTL in COM. Methods: A total of 56 patients with post-traumatic COM of the extremity and 62 healthy control subjects were recruited. The PLTL was measured by real-time PCR. Binary logistic regression analysis was used to identify factors in correlation with telomere length. Sex, age, white blood cell (WBC) count, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), and infection duration were included as independent variables in the logistic regression model. Results: Post-traumatic COM patients had significantly shorter PLTLs (5.39 ± 0.40) than healthy control subjects (5.69 ± 0.46; p < 0.001). Binary logistic regression analysis showed that PLTL had a statistically significant association with age (B = -0.072; p = 0.013) and CRP (B = -0.061; p = 0.033). The logistic regression model was statistically significant and explained 31.4% (Nagelkerke R2) of the change in telomere length and correctly classified 69.6% of the cases. Conclusions: Patients with post-traumatic COM have shorter PLTLs than healthy subjects. The PLTL erosion of post-traumatic COM was partially explained by age and CRP.
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Affiliation(s)
- Songyun Deng
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shengyao Liu
- Department of Orthopedics, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shaoyong Xu
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yongbin He
- Department of Orthopedics, The Fifth Affiliated Hospital of Zunyi Medical University, Zhuhai, China
| | - Xia Zhou
- Physical Examination Center of Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Guoxin Ni
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- School of Sport Medicine and Rehabilitation, Beijing Sport University, Beijing, China
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127
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Ortiz-Morales AM, Alcala-Diaz JF, Rangel-Zuñiga OA, Corina A, Quintana-Navarro G, Cardelo MP, Yubero-Serrano E, Malagon MM, Delgado-Lista J, Ordovas JM, Lopez-Miranda J, Perez-Martinez P. Biological senescence risk score. A practical tool to predict biological senescence status. Eur J Clin Invest 2020; 50:e13305. [PMID: 32506428 DOI: 10.1111/eci.13305] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 05/10/2020] [Accepted: 05/27/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Ageing and biological senescence, both related to cardiovascular disease, are mediated by oxidative stress and inflammation. We aim to develop a predictive tool to evaluate the degree of biological senescence in coronary patients. METHODS Relative telomere length (RTL) of 1002 coronary patients from the CORDIOPREV study (NCT00924937) was determined at baseline in addition to markers of inflammatory response (hs-C-Reactive Protein, monocyte chemoattractant protein-1, IL-6, IL-1β, TNF-α, adiponectin, resistin and leptin) and oxidative stress (nitric oxide, lipid peroxidation products, carbonylated proteins, catalase, total glutathione, reduced glutathione, oxidized glutathione, superoxide dismutase and peroxidated glutathione). Biological senescence was defined using the cut-off value defined by the lower quintile of relative telomere length in our population (RTL = 0.7629). We generated and tested different predictive models based on logistic regression analysis to identify biological senescence. Three models were designed to be used with different sets of information. RESULTS We selected those patients with all the variables proposed to develop the predictive models (n = 353). Statistically significant differences between both groups (Biological senescence vs. Nonbiological senescence) were found for total cholesterol, catalase, superoxide dismutase, IL-1β, resistin and leptin. The area under the curve of receiver-operating characteristic to predict biological senescence for our models was 0.65, 0.75 and 0.72. CONCLUSIONS These predictive models allow us to calculate the degree of biological senescence in coronary patients, identifying a subgroup of patients at higher risk and who may require more intensive treatment.
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Affiliation(s)
- Ana M Ortiz-Morales
- Lipids and Atherosclerosis Unit, Department of Medicine, IMIBIC/Hospital Universitario Reina Sofia/Universidad de Cordoba, Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Juan F Alcala-Diaz
- Lipids and Atherosclerosis Unit, Department of Medicine, IMIBIC/Hospital Universitario Reina Sofia/Universidad de Cordoba, Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Oriol A Rangel-Zuñiga
- Lipids and Atherosclerosis Unit, Department of Medicine, IMIBIC/Hospital Universitario Reina Sofia/Universidad de Cordoba, Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Andreea Corina
- Lipids and Atherosclerosis Unit, Department of Medicine, IMIBIC/Hospital Universitario Reina Sofia/Universidad de Cordoba, Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Gracia Quintana-Navarro
- Lipids and Atherosclerosis Unit, Department of Medicine, IMIBIC/Hospital Universitario Reina Sofia/Universidad de Cordoba, Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Magdalena P Cardelo
- Lipids and Atherosclerosis Unit, Department of Medicine, IMIBIC/Hospital Universitario Reina Sofia/Universidad de Cordoba, Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Elena Yubero-Serrano
- Lipids and Atherosclerosis Unit, Department of Medicine, IMIBIC/Hospital Universitario Reina Sofia/Universidad de Cordoba, Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Maria M Malagon
- CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain.,Department of Cell Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain
| | - Javier Delgado-Lista
- Lipids and Atherosclerosis Unit, Department of Medicine, IMIBIC/Hospital Universitario Reina Sofia/Universidad de Cordoba, Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Jose M Ordovas
- Nutrition and Genomics Laboratory, J.M.-US Departament of Agriculture Human Nutrition Research Center on Aging at, Tufts University, Boston, MA, USA.,IMDEA Alimentacion, Madrid, Spain.,CNIC, Madrid, Spain
| | - Jose Lopez-Miranda
- Lipids and Atherosclerosis Unit, Department of Medicine, IMIBIC/Hospital Universitario Reina Sofia/Universidad de Cordoba, Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Pablo Perez-Martinez
- Lipids and Atherosclerosis Unit, Department of Medicine, IMIBIC/Hospital Universitario Reina Sofia/Universidad de Cordoba, Cordoba, Spain.,CIBER Fisiopatologia Obesidad y Nutricion (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
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128
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Warner ET, Zhang Y, Gu Y, Taporoski TP, Pereira A, DeVivo I, Spence ND, Cozier Y, Palmer JR, Kanaya AM, Kandula NR, Cole SA, Tworoger S, Shields A. Physical and sexual abuse in childhood and adolescence and leukocyte telomere length: A pooled analysis of the study on psychosocial stress, spirituality, and health. PLoS One 2020; 15:e0241363. [PMID: 33125425 PMCID: PMC7598522 DOI: 10.1371/journal.pone.0241363] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 10/13/2020] [Indexed: 12/21/2022] Open
Abstract
Introduction We examined whether abuse in childhood and/or adolescence was associated with shorter telomere length in a pooled analysis of 3,232 participants from five diverse cohorts. We also assessed whether religion or spirituality (R/S) could buffer deleterious effects of abuse. Methods Physical and sexual abuse in childhood (age <12) and adolescence (age 12–18) was assessed using the Revised Conflict Tactics Scale and questions from a 1995 Gallup survey. We measured relative leukocyte telomere lengths (RTL) using quantitative real time polymerase chain reaction. We used generalized estimating equations to assess associations of physical and sexual abuse with log-transformed RTL z-scores. Analyses were conducted in each cohort, overall, and stratified by extent of religiosity or spirituality and religious coping in adulthood. We pooled study‐specific estimates using random‐effects models and assessed between-study heterogeneity. Results Compared to no abuse, severe sexual abuse was associated with lower RTL z-scores, in childhood: -15.6%, 95% CI: -25.9, -4.9; p-trend = 0.04; p-heterogeneity = 0.58 and in adolescence: -16.5%, 95% CI: -28.1, -3.0; p-trend = 0.08; p-heterogeneity = 0.68. Sexual abuse experienced in both childhood and adolescence was associated with 11.3% lower RTL z-scores after adjustment for childhood and demographic covariates (95% CI: -20.5%, -2.0%; p-trend = 0.03; p-heterogeneity = 0.62). There was no evidence of effect modification by R/S. Physical abuse was not associated with telomere length. Conclusions Sexual abuse in childhood or adolescence was associated with a marker of accelerated biological aging, decreased telomere length. The lack of moderation by R/S may be due to inability to capture the appropriate time period for those beliefs and practices.
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Affiliation(s)
- Erica T. Warner
- MGH/Harvard Center on Genomics, Vulnerable Populations, and Health Disparities, Mongan Institute, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Medicine, Clinical Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- * E-mail:
| | - Ying Zhang
- MGH/Harvard Center on Genomics, Vulnerable Populations, and Health Disparities, Mongan Institute, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- Division of Sleep Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Yue Gu
- MGH/Harvard Center on Genomics, Vulnerable Populations, and Health Disparities, Mongan Institute, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Tâmara P. Taporoski
- Department of Neurology (Sleep Medicine), Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (Incor), University of São Paulo Medical School, São Paulo, São Paulo, Brazil
| | - Alexandre Pereira
- Laboratory of Genetics and Molecular Cardiology, Heart Institute (Incor), University of São Paulo Medical School, São Paulo, São Paulo, Brazil
| | - Immaculata DeVivo
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Nicholas D. Spence
- MGH/Harvard Center on Genomics, Vulnerable Populations, and Health Disparities, Mongan Institute, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Sociology, University of Toronto, Toronto, Ontario, Canada
| | - Yvette Cozier
- Slone Epidemiology Center, Boston University, Boston, Massachusetts, United States of America
| | - Julie R. Palmer
- Slone Epidemiology Center, Boston University, Boston, Massachusetts, United States of America
| | - Alka M. Kanaya
- Division of General Internal Medicine, University of California San Francisco, San Francisco, Califonia, United States of America
| | - Namratha R. Kandula
- Department of Medicine, Northwestern University, Evanston, Illinois, United States of America
| | - Shelley A. Cole
- Department of Genetics, Texas Biomedical Research Institute, San Antonio, Texas, United States of America
| | - Shelley Tworoger
- Department of Cancer Epidemiology, Moffitt Cancer Center and Research Institute, Tampa, Florida, United States of America
| | - Alexandra Shields
- MGH/Harvard Center on Genomics, Vulnerable Populations, and Health Disparities, Mongan Institute, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
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Schmidt M, Hopp L, Arakelyan A, Kirsten H, Engel C, Wirkner K, Krohn K, Burkhardt R, Thiery J, Loeffler M, Loeffler-Wirth H, Binder H. The Human Blood Transcriptome in a Large Population Cohort and Its Relation to Aging and Health. Front Big Data 2020; 3:548873. [PMID: 33693414 PMCID: PMC7931910 DOI: 10.3389/fdata.2020.548873] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023] Open
Abstract
Background: The blood transcriptome is expected to provide a detailed picture of an organism's physiological state with potential outcomes for applications in medical diagnostics and molecular and epidemiological research. We here present the analysis of blood specimens of 3,388 adult individuals, together with phenotype characteristics such as disease history, medication status, lifestyle factors, and body mass index (BMI). The size and heterogeneity of this data challenges analytics in terms of dimension reduction, knowledge mining, feature extraction, and data integration. Methods: Self-organizing maps (SOM)-machine learning was applied to study transcriptional states on a population-wide scale. This method permits a detailed description and visualization of the molecular heterogeneity of transcriptomes and of their association with different phenotypic features. Results: The diversity of transcriptomes is described by personalized SOM-portraits, which specify the samples in terms of modules of co-expressed genes of different functional context. We identified two major blood transcriptome types where type 1 was found more in men, the elderly, and overweight people and it upregulated genes associated with inflammation and increased heme metabolism, while type 2 was predominantly found in women, younger, and normal weight participants and it was associated with activated immune responses, transcriptional, ribosomal, mitochondrial, and telomere-maintenance cell-functions. We find a striking overlap of signatures shared by multiple diseases, aging, and obesity driven by an underlying common pattern, which was associated with the immune response and the increase of inflammatory processes. Conclusions: Machine learning applications for large and heterogeneous omics data provide a holistic view on the diversity of the human blood transcriptome. It provides a tool for comparative analyses of transcriptional signatures and of associated phenotypes in population studies and medical applications.
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Affiliation(s)
- Maria Schmidt
- IZBI, Interdisciplinary Centre for Bioinformatics, Universität Leipzig, Leipzig, Germany
| | - Lydia Hopp
- IZBI, Interdisciplinary Centre for Bioinformatics, Universität Leipzig, Leipzig, Germany
| | - Arsen Arakelyan
- BIG, Group of Bioinformatics, Institute of Molecular Biology, National Academy of Sciences, Yerevan, Armenia
| | - Holger Kirsten
- IMISE, Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany.,Leipzig Research Centre for Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - Christoph Engel
- IMISE, Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany.,Leipzig Research Centre for Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - Kerstin Wirkner
- IMISE, Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany.,Leipzig Research Centre for Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - Knut Krohn
- Leipzig Research Centre for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig, Leipzig, Germany
| | - Ralph Burkhardt
- Leipzig Research Centre for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig, Leipzig, Germany
| | - Joachim Thiery
- Leipzig Research Centre for Civilization Diseases, University of Leipzig, Leipzig, Germany.,Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig, Leipzig, Germany
| | - Markus Loeffler
- IZBI, Interdisciplinary Centre for Bioinformatics, Universität Leipzig, Leipzig, Germany.,IMISE, Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany.,Leipzig Research Centre for Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - Henry Loeffler-Wirth
- IZBI, Interdisciplinary Centre for Bioinformatics, Universität Leipzig, Leipzig, Germany
| | - Hans Binder
- IZBI, Interdisciplinary Centre for Bioinformatics, Universität Leipzig, Leipzig, Germany.,Leipzig Research Centre for Civilization Diseases, University of Leipzig, Leipzig, Germany
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130
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Song W, Yang J, Niu Z. Association of periodontitis with leukocyte telomere length in US adults: A cross-sectional analysis of NHANES 1999 to 2002. J Periodontol 2020; 92:833-843. [PMID: 32996594 DOI: 10.1002/jper.20-0269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 08/30/2020] [Accepted: 09/10/2020] [Indexed: 01/11/2023]
Abstract
BACKGROUND This study examines the association of periodontitis with telomere length (TL) and effect modification by population characteristics. METHODS We analyzed data from 3,478 participants from the 1999 to 2002 National Health and Nutrition Examination Survey. Probing depth, attachment loss, and bleed on probing (BOP, available for 1,973 participants only) were examined on the distal, mesial, or mid-facial site of each tooth in two randomly selected quadrants. We defined periodontitis severity according to the Centers for Disease Control/American Academy of Periodontology guideline. TL from leukocytes was measured with qPCR. We used linear and logistic regression to examine the adjusted association of different severity of periodontitis and BOP with continuous TL (bp) and dichotomized short TL (<median), respectively. To assess effect modification, we stratified the analyses by a priori selected population characteristics including sex, age, body weight status, smoking, and cardiometabolic comorbidity. RESULTS Moderate BOP (<10% bleeding sites) was significantly associated with a shorter continuous TL (β = -89.0, SE = 37.8). Moderate to severe periodontitis was significantly associated with 47% (95% confidence interval [IL], 1.04 to 2.09) higher odds of shorter TL, compared with those with mild or no periodontitis. The association was stronger in those who were female (adjusted OR, 1.76; 95% CI, 1.10 to 2.83), overweight or obese (adjusted OR, 1.64; 95% CI, 1.12 to 2.41), or had cardiometabolic comorbidities (adjusted OR, 2.13; 95% CI, 1.38 to 3.29). CONCLUSIONS Periodontitis was associated with TL, a biomarker of cellular aging. The association was stronger in females, overweight or obese, or those with cardiometabolic diseases. Treatment on periodontitis could potentially protect individuals from aging-related diseases.
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Affiliation(s)
- Weihong Song
- Department of Stomatology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jianzhen Yang
- Department of Endodontics, Southern Medical University Hospital of Stomatology (Guandong Stomatology Hospital), Guangzhou, China
| | - Zhongzheng Niu
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, the State University of New York at Buffalo, Buffalo, New York, USA
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131
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Normando P, Bezerra FF, Santana BA, Calado RT, Santos-Rebouças CB, Epel ES, Faerstein E. Association between socioeconomic markers and adult telomere length differs according to sex: Pro-Saúde study. ACTA ACUST UNITED AC 2020; 53:e10223. [PMID: 33053112 PMCID: PMC7552895 DOI: 10.1590/1414-431x202010223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/09/2020] [Indexed: 11/24/2022]
Abstract
Understanding the social determinants of telomere length is critical to evaluate the risk of early biological aging. We investigated sex differences on the association between socioeconomic status (SES) and demographic markers and leukocyte telomere length (LTL) in Brazilian adults. This cross-sectional study was conducted in a subsample (women=228; men=200) nested within the Pro-Saúde study, a prospective cohort study of university civil servants in Rio de Janeiro, Brazil (2012-2013). Adjusted multivariate models were used to test the relationship between SES markers (marital status, educational attainment, father's educational attainment, race/skin color, household income, and childhood experience of food deprivation) and LTL. After adjusting for age and potential health-related confounders, lower educational attainment was associated with shorter LTL among men (β=-0.05, 95% confidence interval (CI)=95%CI: -0.10, 0.00, P=0.03). In women, LTL was inversely associated with unmarried status (β=-0.05, 95%CI: -0.09, 0.00, P=0.03), lower father's educational attainment (β=-0.05, 95%CI: -0.13, 0.00, P=0.04), and childhood experience of food deprivation (β=-0.07, 95%CI: -0.13, 0.00, P=0.04). Our findings suggested that the association between SES markers and LTL differs according to sex. SES markers able to induce lifelong stress, reflected in LTL, appeared to be more related to individual factors in men, whereas in women they were family-related.
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Affiliation(s)
- P Normando
- Instituto de Nutrição, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - F F Bezerra
- Instituto de Nutrição, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - B A Santana
- Departamento de Imagens Médicas, Hematologia e Oncologia Clínica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - R T Calado
- Departamento de Imagens Médicas, Hematologia e Oncologia Clínica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - C B Santos-Rebouças
- Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - E S Epel
- University of California San Francisco, San Francisco, CA, USA
| | - E Faerstein
- Instituto de Medicina Social, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
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132
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Beijers R, Hartman S, Shalev I, Hastings W, Mattern BC, de Weerth C, Belsky J. Testing three hypotheses about effects of sensitive-insensitive parenting on telomeres. Dev Psychol 2020; 56:237-250. [PMID: 31961192 DOI: 10.1037/dev0000879] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Telomeres are the protective DNA-protein sequences appearing at the ends of chromosomes; they shorten with each cell division and are considered a biomarker of aging. Shorter telomere length and greater erosion have been associated with compromised physical and mental health and are hypothesized to be affected by early life stress. In the latter case, most work has relied on retrospective measures of early life stressors. The Dutch research (n = 193) presented herein tested 3 hypotheses prospectively regarding effects of sensitive-insensitive parenting during the first 2.5 years on telomere length at age 6, when first measured, and change over the following 4 years. It was predicted that (1) less sensitive parenting would predict shorter telomeres and greater erosion and that such effects would be most pronounced in children (2) exposed to prenatal stress and/or (3) who were highly negatively emotional as infants. Results revealed, only, that prenatal stress amplified parenting effects on telomere change-in a differential-susceptibility-related manner: Prenatally stressed children displayed more erosion when they experienced insensitive parenting and less erosion when they experienced sensitive parenting. Mechanisms that might initiate greater postnatal plasticity as a result of prenatal stress are highlighted and future work outlined. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
| | | | | | | | | | | | - Jay Belsky
- Department of Human Development and Family Studies
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133
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Thomas N, Hudaib AR, Romano-Silva M, Bozaoglu K, H X Thomas E, Rossell S, Kulkarni J, Gurvich C. Influence of cortisol awakening response on telomere length: Trends for males and females. Eur J Neurosci 2020; 55:2794-2803. [PMID: 33012014 DOI: 10.1111/ejn.14996] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 09/24/2020] [Indexed: 12/29/2022]
Abstract
Although telomere attrition is associated with the process of normal ageing, shorter telomere length (TL) has been associated with acute and chronic stressors. A neurobiological factor hypothesised to be responsible for this accelerated attrition is the dysregulation of the cortisol stress response, which can induce DNA damage affecting DNA telomeric caps. Marked sex differences are reported in both the cortisol stress response and telomere dynamics, yet no explicit investigation of sex specificity on the relationship between cortisol and TL exists. This study used mathematical equation modelling to describe the relationship between diurnal cortisol levels and telomere length within the context of sex, in a healthy population. Cortisol awakening responses (CAR) were measured via ELISA methodology in fifty-one healthy participants (28 males, 23 females). qPCRs determined TL from genomic DNA extracted from saliva. To assess the effect of free cortisol on relative TL ratio, a semi-log regression plot of the two variables trended for sex were fitted using spline curves. Results demonstrated significant differences between males and females in the relationship defining CAR and TL association (p = 0.03). These results suggest the relationship is not linear and can be represented as a complex arcsin function, and that the patterns are opposite in males and females. Males demonstrate a positive correlation, with higher levels of CAR being associated with longer telomere sequences. Females demonstrated a negative correlation. Future studies must carefully take into consideration moderating factors such as sex, and sex hormones across the lifespan when investigating telomere length.
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Affiliation(s)
- Natalie Thomas
- Monash Alfred Psychiatry Research Centre, Monash University and the Alfred Hospital, Melbourne, Vic, Australia
| | - Abdul-Rahman Hudaib
- Monash Alfred Psychiatry Research Centre, Monash University and the Alfred Hospital, Melbourne, Vic, Australia
| | - Marco Romano-Silva
- Department of Saude Mental, Faculdade de Medicina, UFMG, Belo Horizonte, Brazil
| | - Kiymet Bozaoglu
- Neurogenetic Research, Murdoch Children's Research Institute, The Department of Paediatrics University of Melbourne, Melbourne, Vic, Australia
| | - Elizabeth H X Thomas
- Monash Alfred Psychiatry Research Centre, Monash University and the Alfred Hospital, Melbourne, Vic, Australia
| | - Susan Rossell
- Centre for Mental Health, Faculty of Health, Arts and Design, Swinburne University of Technology, Vic, Australia
| | - Jayashri Kulkarni
- Monash Alfred Psychiatry Research Centre, Monash University and the Alfred Hospital, Melbourne, Vic, Australia
| | - Caroline Gurvich
- Monash Alfred Psychiatry Research Centre, Monash University and the Alfred Hospital, Melbourne, Vic, Australia
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134
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Demanelis K, Jasmine F, Chen LS, Chernoff M, Tong L, Delgado D, Zhang C, Shinkle J, Sabarinathan M, Lin H, Ramirez E, Oliva M, Kim-Hellmuth S, Stranger BE, Lai TP, Aviv A, Ardlie KG, Aguet F, Ahsan H, Doherty JA, Kibriya MG, Pierce BL. Determinants of telomere length across human tissues. Science 2020; 369:eaaz6876. [PMID: 32913074 PMCID: PMC8108546 DOI: 10.1126/science.aaz6876] [Citation(s) in RCA: 212] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 08/03/2020] [Indexed: 12/12/2022]
Abstract
Telomere shortening is a hallmark of aging. Telomere length (TL) in blood cells has been studied extensively as a biomarker of human aging and disease; however, little is known regarding variability in TL in nonblood, disease-relevant tissue types. Here, we characterize variability in TLs from 6391 tissue samples, representing >20 tissue types and 952 individuals from the Genotype-Tissue Expression (GTEx) project. We describe differences across tissue types, positive correlation among tissue types, and associations with age and ancestry. We show that genetic variation affects TL in multiple tissue types and that TL may mediate the effect of age on gene expression. Our results provide the foundational knowledge regarding TL in healthy tissues that is needed to interpret epidemiological studies of TL and human health.
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Affiliation(s)
- Kathryn Demanelis
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Farzana Jasmine
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Lin S Chen
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Meytal Chernoff
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Lin Tong
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Dayana Delgado
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Chenan Zhang
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Justin Shinkle
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Mekala Sabarinathan
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Hannah Lin
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Eduardo Ramirez
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Meritxell Oliva
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
- Section of Genetic Medicine, Department of Medicine, Institute for Genomics and Systems Biology, Center for Data Intensive Science, University of Chicago, Chicago, IL, USA
| | - Sarah Kim-Hellmuth
- New York Genome Center, New York, NY, USA
- Statistical Genetics, Max Planck Institute of Psychiatry, Munich, Germany
- Department of Systems Biology, Columbia University, New York, NY, USA
| | - Barbara E Stranger
- Section of Genetic Medicine, Department of Medicine, Institute for Genomics and Systems Biology, Center for Data Intensive Science, University of Chicago, Chicago, IL, USA
- Center for Genetic Medicine, Department of Pharmacology, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
| | - Tsung-Po Lai
- Center of Human Development and Aging, Rutgers New Jersey Medical School, The State University of New Jersey, Newark, NJ, USA
| | - Abraham Aviv
- Center of Human Development and Aging, Rutgers New Jersey Medical School, The State University of New Jersey, Newark, NJ, USA
| | | | | | - Habibul Ahsan
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
- Department of Human Genetics, University of Chicago, Chicago, IL, USA
- University of Chicago Comprehensive Cancer Center, Chicago, IL, USA
- Department of Medicine, University of Chicago, Chicago, IL, USA
| | | | - Muhammad G Kibriya
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Brandon L Pierce
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA.
- Department of Human Genetics, University of Chicago, Chicago, IL, USA
- University of Chicago Comprehensive Cancer Center, Chicago, IL, USA
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135
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Lulkiewicz M, Bajsert J, Kopczynski P, Barczak W, Rubis B. Telomere length: how the length makes a difference. Mol Biol Rep 2020; 47:7181-7188. [PMID: 32876842 PMCID: PMC7561533 DOI: 10.1007/s11033-020-05551-y] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 05/23/2020] [Indexed: 12/22/2022]
Abstract
Telomerase is perceived as an immortality enzyme that might provide longevity to cells and whole organisms. Importantly, it is generally inactive in most somatic cells of healthy, adult men. Consequently, its substrates, i.e. telomeres, get shorter in most human cells with time. Noteworthy, cell life limitation due to telomere attrition during cell divisions, may not be as bad as it looks since longer cell life means longer exposition to harmful factors. Consequently, telomere length (attrition rate) becomes a factor that is responsible for inducing the signaling that leads to the elimination of cells that lived long enough to acquire severe damage. It seems that telomere length that depends on many different factors (including telomerase activity but also genetic factors, a hormonal profile that reflects sex, etc.) might become a useful marker of aging and exposition to stress. Thus in the current paper, we review the factors that affect telomere length in human cells focusing on sex that all together with different environmental and hormonal regulations as well as parental aspect affect telomere attrition rate. We also raise some limitations in the assessment of telomere length that hinders a trustworthy meta-analysis that might lead to acknowledgment of the real value of this parameter.
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Affiliation(s)
- M Lulkiewicz
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, 49 Przybyszewskiego St., 60-355, Poznan, Poland
| | - J Bajsert
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, 49 Przybyszewskiego St., 60-355, Poznan, Poland
| | - P Kopczynski
- Centre for Orthodontic Mini-Implants at the Department and Clinic of Maxillofacial Orthopedics and Orthodontics, Poznan University of Medical Sciences, 60-812, Poznan, Poland
| | - W Barczak
- Department of Head and Neck Surgery, Poznan University of Medical Sciences, The Greater Poland Cancer Centre, 61-866, Poznan, Poland.,Radiobiology Laboratory, Department of Medical Physics, The Greater Poland Cancer Centre, 61-866, Poznan, Poland
| | - B Rubis
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, 49 Przybyszewskiego St., 60-355, Poznan, Poland.
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136
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Yin H, Hardikar S, Lindstroem S, Hsu L, Anderson KE, Banbury BL, Berndt SI, Chan AT, Giovanucci EL, Harrison TA, Joshi AD, Nan H, Potter JD, Sakoda LC, Slattery ML, Schoen RE, White E, Peters U, Newcomb PA. Telomere Maintenance Variants and Survival after Colorectal Cancer: Smoking- and Sex-Specific Associations. Cancer Epidemiol Biomarkers Prev 2020; 29:1817-1824. [PMID: 32586834 PMCID: PMC7928192 DOI: 10.1158/1055-9965.epi-19-1507] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/14/2020] [Accepted: 06/22/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Telomeres play an important role in colorectal cancer prognosis. Variation in telomere maintenance genes may be associated with survival after colorectal cancer diagnosis, but evidence is limited. In addition, possible interactions between telomere maintenance genes and prognostic factors, such as smoking and sex, also remain to be investigated. METHODS We conducted gene-wide analyses of colorectal cancer prognosis in 4,896 invasive colorectal cancer cases from the Genetics and Epidemiology of Colorectal Cancer Consortium (GECCO); 1,871 common variants within 13 telomere maintenance genes were included. Cox models were fit to estimate associations of these variants individually with overall and colorectal cancer-specific survival. Likelihood ratio tests were used to test for interaction by smoking and sex. P values were adjusted using Bonferroni correction. RESULTS The association between minor allele of rs7200950 (ACD) with colorectal cancer-specific survival varied significantly by smoking pack-years (corrected P = 0.049), but no significant trend was observed. By sex, minor alleles for rs2975843 (TERF1), rs75676021 (POT1), and rs74429678 (POT1) were associated with decreased overall and/or colorectal cancer-specific survival in women but not in men. CONCLUSIONS Our study reported a gene-wide statistically significant interaction with sex (TERF1, POT1). Although significant interaction by smoking pack-years (ACD) was observed, there was no evidence of a dose response. Validation of these findings in other large studies and further functional annotation on these SNPs are warranted. IMPACT Our study found a gene-smoking and gene-sex interaction on survival after colorectal cancer diagnosis, providing new insights into the role of genetic polymorphisms in telomere maintenance on colorectal cancer prognosis.
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Affiliation(s)
- Hang Yin
- Department of Epidemiology, University of Washington, Seattle, Washington
| | - Sheetal Hardikar
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
- Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
| | - Sara Lindstroem
- Department of Epidemiology, University of Washington, Seattle, Washington
| | - Li Hsu
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
- Department of Biostatistics, University of Washington, Seattle, Washington
| | - Kristin E Anderson
- Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, Minnesota
| | - Barbara L Banbury
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Sonja I Berndt
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
| | - Andrew T Chan
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
| | - Edward L Giovanucci
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
- Departments of Epidemiology and Nutrition, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
| | - Tabitha A Harrison
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Amit D Joshi
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
| | - Hongmei Nan
- Department of Epidemiology, Richard M. Fairbanks School of Public Health, Indiana University, Indianapolis, Indiana
- Melvin and Bren Simon Cancer Center, Indiana University, Indianapolis, Indiana
| | - John D Potter
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Lori C Sakoda
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Martha L Slattery
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah
| | - Robert E Schoen
- Department of Medicine and Epidemiology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Emily White
- Department of Epidemiology, University of Washington, Seattle, Washington
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Ulrike Peters
- Department of Epidemiology, University of Washington, Seattle, Washington
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Polly A Newcomb
- Department of Epidemiology, University of Washington, Seattle, Washington.
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
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137
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Ren JC, Liu H, Zhang GH, Wang T, Li J, Dong T, Wu H, Xia ZL. Interaction effects of environmental response gene polymorphisms and benzene exposure on telomere length in shoe-making workers. CHEMOSPHERE 2020; 255:126841. [PMID: 32416388 DOI: 10.1016/j.chemosphere.2020.126841] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 06/11/2023]
Abstract
Benzene is a globally occurring environmental and occupational pollutant that causes leukemia. To better understand telomere length (TL) as a function of benzene toxicity, we recruited 294 shoe-making workers and 102 controls from Wenzhou, China in 2011. Biomarkers of TL, cytokinesis-block micronucleus (MN) frequency, and white blood cells (WBC) were measured. In total, 18 polymorphic sites in environmental response genes, including metabolic and DNA repair genes, were analyzed. Results indicate that benzene exposure led to a longer TL at a threshold of 32 mg/m3-year of cumulative exposure dose (CED). Furthermore, the TL was longer in members of the damaged group, when evaluated for MN frequency (P < 0.001) and reduced WBC (P < 0.001), than in those of the normal group. Workers carrying genotype TT (β = 0.32, P = 0.042) in rs3212986 of ERCC1 and genotype TC (β = 0.24, P = 0.082) in rs1051740 of mEH exon3 were associated with a longer TL as compared to the wild-type group. TA (β = -0.53, P < 0.001) in rs6413432 of CYP2E1 was associated with a shorter TL. Benzene exposure interacted with the TA type in rs6413432 (β = 0.003, 95% CI: 0, 0.006, P = 0.042) and the CC type in rs1051740 (β = 0.007, 95% CI: 0.001, 0.013, P = 0.015) after adjusting for confounding factors. Our results indicate that benzene induces an increase in TL at a threshold of CED ≥32mg/m3-year. Rs1051740, rs3212986, and rs6413432 were found to be involved in benzene-induced telomere growth; in particular, rs1051740 and rs6413432 interacted with the benzene exposure, resulting in an extended TL.
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Affiliation(s)
- Jing-Chao Ren
- School of Public Health, Xinxiang Medical University, 601 Jinsui Road, Xinxiang, 453003, China
| | - Huan Liu
- School of Public Health, Xinxiang Medical University, 601 Jinsui Road, Xinxiang, 453003, China
| | - Guang-Hui Zhang
- School of Public Health, Xinxiang Medical University, 601 Jinsui Road, Xinxiang, 453003, China.
| | - Tongshuai Wang
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Jingzhi Li
- School of Public Health, Xinxiang Medical University, 601 Jinsui Road, Xinxiang, 453003, China
| | - Tingting Dong
- School of Public Health, Xinxiang Medical University, 601 Jinsui Road, Xinxiang, 453003, China
| | - Hantian Wu
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China
| | - Zhao-Lin Xia
- Department of Occupational Health and Toxicology, School of Public Health, Fudan University, 138 Yixueyuan Road, Shanghai, 200032, China.
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138
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Ryan KM, McLoughlin DM. Telomere length in depression and association with therapeutic response to electroconvulsive therapy and cognitive side-effects. Psychol Med 2020; 50:2096-2106. [PMID: 31477194 DOI: 10.1017/s0033291719002228] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Electroconvulsive therapy (ECT) is the most acutely effective treatment for severe treatment-resistant depression. However, there are concerns about its cognitive side-effects and we cannot yet confidently predict who will experience these. Telomeres are DNA-protein complexes that maintain genomic integrity. In somatic cells, telomeres shorten with each cell division. Telomere length (TL) can thus provide a measure of 'biological' aging. TL appears to be reduced in depression, though results are mixed. We sought to test the following hypotheses: (1) that TL would be shorter in patients with depression compared to controls; (2) that TL would be a predictor of response to ECT; and (3) that shorter TL would predict cognitive side-effects following ECT. METHOD We assessed TL in whole blood DNA collected from severely depressed patients (n = 100) recruited as part of the EFFECT-Dep Trial and healthy controls (n = 80) using quantitative real-time polymerase chain reaction. Mood and selected cognitive measures, including global cognition, re-orientation time, and autobiographical memory, were obtained pre-/post-ECT and from controls. RESULTS Our results indicate that TL does not differ between patients with depression compared to controls. TL itself was not associated with mood ratings and did not predict the therapeutic response to ECT. Furthermore, shorter baseline TL is not a predictor of cognitive side-effects post-ECT. CONCLUSIONS Overall, TL assessed by PCR does not represent a useful biomarker for predicting the therapeutic outcomes or risk for selected cognitive deficits following ECT.
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Affiliation(s)
- Karen M Ryan
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland
- Department of Psychiatry, St. Patrick's University Hospital, Trinity College Dublin, James Street, Dublin 8, Ireland
| | - Declan M McLoughlin
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland
- Department of Psychiatry, St. Patrick's University Hospital, Trinity College Dublin, James Street, Dublin 8, Ireland
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139
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Travica N, Ried K, Hudson I, Sali A, Scholey A, Pipingas A. The Contribution of Plasma and Brain Vitamin C on Age and Gender-Related Cognitive Differences: A Mini-Review of the Literature. Front Integr Neurosci 2020; 14:47. [PMID: 32973470 PMCID: PMC7471743 DOI: 10.3389/fnint.2020.00047] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 07/24/2020] [Indexed: 12/14/2022] Open
Abstract
There is increasing evidence that sex differences in the brain may contribute to gender-related behavioral differences, including cognitive function. Literature has revealed gender dimorphisms in cognitive function between males and females. Additionally, several risk factors associated with cognitive decline depend on chronological age. It is well recognized that the process of aging is associated with a decline in cognitive ability and brain function. Various explanations may account for these gender-related cognitive differences and age-associated cognitive changes. Recent investigations have highlighted the importance of vitamin C in maintaining brain health and its association with cognitive function in both cognitively intact and impaired cohorts. The present review explores previous literature that has evaluated differences in plasma/brain vitamin C between genders and during aging. It then assesses whether these age and gender-related differences may affect the relationship between plasma/brain vitamin C and cognition. The purpose of this review was to examine the evidence for a link between plasma/brain vitamin C and cognition and the impact of gender and age on this relationship. Epidemiological studies have frequently shown higher vitamin C plasma concentrations in women. Similarly, aging has been systematically associated with reductions in plasma vitamin C levels. A range of animal studies has demonstrated potential gender and age-related differences in vitamin C brain distribution and utilization. The reviewed literature suggests that gender differences in plasma and brain vitamin C may potentially contribute to differences in gender-associated cognitive ability, particularly while females are pre-menopausal. Additionally, we can propose that age-associated differences in plasma and brain vitamin C may be potentially linked to age-associated cognitive differences, with older cohorts appearing more vulnerable to experience declines in plasma vitamin C concentrations alongside compromised vitamin C brain regulation. This review encourages future investigations to take into account both gender and age when assessing the link between plasma vitamin C concentrations and cognitive function. Further large scale investigations are required to assess whether differences in cognitive function between genders and age groups may be causally attributed to plasma vitamin C status and brain distribution and utilization.
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Affiliation(s)
- Nikolaj Travica
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, VIC, Australia
- The National Institute of Integrative Medicine, Melbourne, VIC, Australia
| | - Karin Ried
- The National Institute of Integrative Medicine, Melbourne, VIC, Australia
- Discipline of General Practice, University of Adelaide, Adelaide, SA, Australia
- Torrens University, Melbourne, VIC, Australia
| | - Irene Hudson
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, VIC, Australia
- School of Science, College of Science, Engineering and Health, Mathematical Sciences, Royal Melbourne Institute of Technology (RMIT), Melbourne, VIC, Australia
- School of Mathematical and Physical Science, University of Newcastle, Callaghan, NSW, Australia
| | - Avni Sali
- The National Institute of Integrative Medicine, Melbourne, VIC, Australia
| | - Andrew Scholey
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, VIC, Australia
| | - Andrew Pipingas
- Centre for Human Psychopharmacology, Swinburne University of Technology, Melbourne, VIC, Australia
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Canudas S, Becerra-Tomás N, Hernández-Alonso P, Galié S, Leung C, Crous-Bou M, De Vivo I, Gao Y, Gu Y, Meinilä J, Milte C, García-Calzón S, Marti A, Boccardi V, Ventura-Marra M, Salas-Salvadó J. Mediterranean Diet and Telomere Length: A Systematic Review and Meta-Analysis. Adv Nutr 2020; 11:1544-1554. [PMID: 32730558 PMCID: PMC7666892 DOI: 10.1093/advances/nmaa079] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/09/2020] [Accepted: 06/11/2020] [Indexed: 01/20/2023] Open
Abstract
Accelerated telomere shortening has been associated with several age-related diseases and/or decreased lifespan in humans. The Mediterranean diet (MedDiet) is considered to be 1 of the most recognized diets for disease prevention and healthy aging, partially due to its demonstrated anti-inflammatory and antioxidative properties which may impact on telomere length (TL). The aim of this meta-analysis was to determine the associations between MedDiet adherence and TL maintenance. MEDLINE-PubMed and Cochrane databases were searched up to December 2018 for studies evaluating the association between MedDiet adherence and TL in blood cells. Two reviewers, working independently, screened all titles and abstracts to identify studies that met the inclusion criteria [cross-sectional, case-control, and prospective cohort studies and randomized clinical trials (RCTs) published in English and excluded nonoriginal articles]. Data were pooled by the generic inverse variance method using the random effects model and expressed as standardized mean difference (SMD). Heterogeneity was identified using the Cochran Q test and quantified by the I2 statistic. A total of 8 original cross-sectional studies were included for the quantitative meta-analysis, comprising a total of 13,733 participants from 5 countries. A positive association between adherence to the MedDiet and TL was observed in all meta-analyses, with the exception of those conducted only in men: SMD (95% CI) of 0.130 (0.029; 0.231) for all subjects, 0.078 (0.005; 0.152) for women, and 0.095 (-0.005; 0.195) for men. Only 1 prospective cohort study and 1 RCT were identified, therefore, we could not undertake a meta-analysis for these study designs. The present meta-analysis of cross-sectional studies demonstrates that higher MedDiet adherence is associated with longer TL. At the same time, larger and high-quality prospective studies and clinical trials are warranted to confirm this association.
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Affiliation(s)
| | - Nerea Becerra-Tomás
- Departament of Biochemistry and Biotechnology, Human Nutrition Unit, Universitat Rovira i Virgili. Sant Joan de Reus University Hospital, Reus, Spain,Pere Virgili Institut of Health (IISPV), Reus, Spain,Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBEROBN), Carlos III Health Institute, Madrid, Spain,Department of Preventive Medicine and Public Health, School of Medicine, University of Valencia, Valencia, Spain
| | | | - Serena Galié
- Pere Virgili Institut of Health (IISPV), Reus, Spain,Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBEROBN), Carlos III Health Institute, Madrid, Spain
| | - Cindy Leung
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Marta Crous-Bou
- Barcelona Beta Brain Research Center (BBRC), Pasqual Maragall Foundation, Barcelona, Spain,IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA,Frailty and Healthy Ageing Networking Biomedical Researcher Center (CIBERFES), Carlos III Health Institute, Madrid, Spain
| | - Immaculata De Vivo
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA,Channing Division of Network Medicine, Brigham and Women's Hospital - Harvard Medical School, Boston, MA, USA,Radcliffe Institute for Advanced Study, Harvard University, Cambridge, MA, USA
| | - Yawen Gao
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Yian Gu
- The Taub Institute for Research in Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY, USA
| | - Jelena Meinilä
- Public Health Research Program, Folkhälsan Research Center, Helsinki, Finland
| | - Catherine Milte
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Sonia García-Calzón
- Epigenetics and Diabetes Unit, Department of Clinical Sciences CRC, Lund University Diabetes Centre, Scania University Hospital, Malmö, Sweden
| | - Amelia Marti
- Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBEROBN), Carlos III Health Institute, Madrid, Spain,Department of Nutrition, Food Science and Physiology, University of Navarra, Pamplona, Spain
| | - Virginia Boccardi
- Department of Internal Medicine, Surgical, Neurological Metabolic Disease and Geriatric Medicine, Second University of Naples, Naples, Italy
| | - Melissa Ventura-Marra
- Division of Animal and Nutritional Sciences, West Virginia University, Morgantown, WV, USA
| | - Jordi Salas-Salvadó
- Departament of Biochemistry and Biotechnology, Human Nutrition Unit, Universitat Rovira i Virgili. Sant Joan de Reus University Hospital, Reus, Spain,Pere Virgili Institut of Health (IISPV), Reus, Spain,Physiopathology of Obesity and Nutrition Networking Biomedical Research Center (CIBEROBN), Carlos III Health Institute, Madrid, Spain
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141
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Hsieh AY, Kimmel E, Pick N, Sauvé L, Brophy J, Kakkar F, Bitnun A, Murray MC, Côté HC. Inverse relationship between leukocyte telomere length attrition and blood mitochondrial DNA content loss over time. Aging (Albany NY) 2020; 12:15196-15221. [PMID: 32703912 PMCID: PMC7467389 DOI: 10.18632/aging.103703] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 07/06/2020] [Indexed: 05/16/2023]
Abstract
Leukocyte telomere length (LTL) and whole blood mitochondrial DNA (WB mtDNA) content are aging markers impacted by chronic diseases such as human immunodeficiency virus (HIV) infection. We characterized the relationship between these two markers in 312 women ≥12 years of age living with HIV and 300 HIV-negative controls. We found no relationship between the two markers cross-sectionally. In multivariable models, age, ethnicity, HIV, and tobacco smoking were independently associated with shorter LTL, and the former three with lower WB mtDNA. Longitudinally, among a subgroup of 228 HIV participants and 68 HIV-negative controls with ≥2 biospecimens ≥1 year apart, an inverted pattern was observed between the rates of change in LTL and WB mtDNA content per year, whereby faster decline of one was associated with the preservation of the other. Furthermore, if HIV viral control was not maintained between visits, increased rates of both LTL attrition and WB mtDNA loss were observed. We describe a novel relationship between two established aging markers, whereby rates of change in LTL and WB mtDNA are inversely related. Our findings highlight the importance of maintaining HIV viral control, the complementary longitudinal relationship between the two markers, and the need to consider both in aging studies.
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Affiliation(s)
- Anthony Y.Y. Hsieh
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver V6T 2B5, British Columbia, Canada
- Centre for Blood Research, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
| | - Elana Kimmel
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver V6T 2B5, British Columbia, Canada
- Centre for Blood Research, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
| | - Neora Pick
- Oak Tree Clinic, BC Women's Hospital, Vancouver V6H 3N1, British Columbia, Canada
- Women's Health Research Institute, Vancouver V6H 2N9, British Columbia, Canada
- Department of Medicine, Division of Infectious Diseases, University of British Columbia, Vancouver V5Z 1M9, British Columbia, Canada
| | - Laura Sauvé
- Oak Tree Clinic, BC Women's Hospital, Vancouver V6H 3N1, British Columbia, Canada
- Women's Health Research Institute, Vancouver V6H 2N9, British Columbia, Canada
- Department of Pediatrics, University of British Columbia, Vancouver V6H 0B3, British Columbia, Canada
| | - Jason Brophy
- Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa K1H 8L1, Ontario, Canada
| | - Fatima Kakkar
- Department of Pediatrics, Centre Hospitalier Universtaire Sainte-Justine, Université de Montréal, Montréal H3T 1C5, Quebec, Canada
| | - Ari Bitnun
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto M5G 1X8, Ontario, Canada
| | - Melanie C.M. Murray
- Oak Tree Clinic, BC Women's Hospital, Vancouver V6H 3N1, British Columbia, Canada
- Women's Health Research Institute, Vancouver V6H 2N9, British Columbia, Canada
- Department of Medicine, Division of Infectious Diseases, University of British Columbia, Vancouver V5Z 1M9, British Columbia, Canada
| | - Hélène C.F. Côté
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver V6T 2B5, British Columbia, Canada
- Centre for Blood Research, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
- Women's Health Research Institute, Vancouver V6H 2N9, British Columbia, Canada
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142
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Gaydosh L, Mitchell C, Notterman D, Schneper L, Brooks-Gunn J, Wagner B, Koss K, McLanahan S. Demographic and developmental patterns in telomere length across adolescence. BIODEMOGRAPHY AND SOCIAL BIOLOGY 2020; 66:208-219. [PMID: 34597213 PMCID: PMC8702463 DOI: 10.1080/19485565.2021.1983758] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Telomere length is often used in studies of adults as a biomarker of cellular aging and an indicator of stress exposure. However, we know little about how telomeres change over time, particularly over the course of the important developmental period of adolescence. We use data on telomere length collected at two points in time spanning adolescence (Years 9 and 15) from the Fragile Families and Child Wellbeing Study to examine longitudinal patterns (n = 1,654) in telomere length. We find a quantitatively small but significant average lengthening in telomere length across adolescence and little evidence of associations between telomere length and pubertal development.
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Affiliation(s)
- Lauren Gaydosh
- Department of Sociology and Population Research Center, The University of Texas at Austin, Austin, Texas, USA
| | - Colter Mitchell
- Institute for Social Research and Department of Sociology, University of Michigan, Ann Arbor, Michigan, USA
| | - Daniel Notterman
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA
| | - Lisa Schneper
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA
| | - Jeanne Brooks-Gunn
- Teachers College and the College of Physicians and Surgeons, Columbia University, New York, New York, USA
| | - Brandon Wagner
- Department of Sociology, Anthropology, and Social Work, Texas Tech University, Lubbock, Texas, USA
- Department of Sociology and School of Public and International Affairs, Princeton University, Princeton, New Jersey, USA
| | - Kalsea Koss
- Human Development and Family Science, University of Georgia, Athens, Georgia, USA
| | - Sara McLanahan
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA
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143
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Olsson M, Geraghty NJ, Wapstra E, Wilson M. Telomere length varies substantially between blood cell types in a reptile. ROYAL SOCIETY OPEN SCIENCE 2020; 7:192136. [PMID: 32742684 PMCID: PMC7353983 DOI: 10.1098/rsos.192136] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/12/2020] [Indexed: 05/19/2023]
Abstract
Telomeres are repeat sequences of non-coding DNA-protein molecules that cap or intersperse metazoan chromosomes. Interest in telomeres has increased exponentially in recent years, to now include their ongoing dynamics and evolution within natural populations where individuals vary in telomere attributes. Phylogenetic analyses show profound differences in telomere length across non-model taxa. However, telomeres may also differ in length within individuals and between tissues. The latter becomes a potential source of error when researchers use different tissues for extracting DNA for telomere analysis and scientific inference. A commonly used tissue type for assessing telomere length is blood, a tissue that itself varies in terms of nuclear content among taxa, in particular to what degree their thrombocytes and red blood cells (RBCs) contain nuclei or not. Specifically, when RBCs lack nuclei, leucocytes become the main source of telomeric DNA. RBCs and leucocytes differ in lifespan and how long they have been exposed to 'senescence' and erosion effects. We report on a study in which cells in whole blood from individual Australian painted dragon lizards (Ctenophorus pictus) were identified using flow cytometry and their telomere length simultaneously measured. Lymphocyte telomeres were on average 270% longer than RBC telomeres, and in azurophils (a reptilian monocyte), telomeres were more than 388% longer than those in RBCs. If this variation in telomere length among different blood cell types is a widespread phenomenon, and DNA for comparative telomere analyses are sourced from whole blood, evolutionary inference of telomere traits among taxa may be seriously complicated by the blood cell type comprising the main source of DNA.
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Affiliation(s)
- Mats Olsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- The School of Earth, Atmospheric and Life Sciences, University of Wollongong, Australia
- Author for correspondence: Mats Olsson e-mail:
| | - Nicholas J. Geraghty
- The School of Earth, Atmospheric and Life Sciences, University of Wollongong, Australia
| | - Erik Wapstra
- School of Natural Sciences, University of Tasmania, Hobart, Australia
| | - Mark Wilson
- School of Chemistry and Molecular Bioscience, Illawarra Health and Medical Research Institute, University of Wollongong, Australia
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144
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Zhang S, Li R, Yang Y, Chen Y, Yang S, Li J, Wu C, Kong T, Liu T, Cai J, Fu L, Zhao Y, Hui R, Zhang W. Longitudinal Association of Telomere Attrition with the Effects of Antihypertensive Treatment and Blood Pressure Lowering. Aging Dis 2020; 11:494-508. [PMID: 32489697 PMCID: PMC7220288 DOI: 10.14336/ad.2019.0721] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 07/21/2019] [Indexed: 11/01/2022] Open
Abstract
Leukocytes telomere length has been associated with hypertension, but, whether longitudinal telomeres change could serve as a useful predictive tool in hypertension remains uncertain. This study aimed to examine the longitudinal trajectory of leukocytes telomere length in a population-based prospective study of 1,108 individuals with hypertension. Leukocytes telomere length were measured at baseline and again after a median 2.2 (range 1.5-2.4) years of follow-up. Age as an independent predictor was inversely associated with baseline telomeres and follow-up telomeres. Annual telomere attrition rate was calculated as (follow-up telomeres-baseline telomeres)/follow-up years, and participants were categorized into the shorten and the lengthen groups. Results showed that telomere lengthening was significantly correlated with decreased systolic blood pressure (SBP) (β=-3.28; P=0.02) and pulse pressure (PP) (β=-2.53; P=0.02), and the differences were respectively -3.3 mmHg (95%CI, -6.2 to -0.3; P=0.03) in ∆SBP and -2.4 mmHg (95%CI, -4.9 to -0.1; P=0.04) in ∆PP between two groups after adjustment for vascular risk factors and baseline blood pressures. When stratified by age and gender, the correlations were observed in women and patients ≤60 years. Furthermore, among patients using calcium channel blocker (CCB) and angiotensin receptor blocker (ARB), those with telomeres lengthening showed a significantly lower level of ∆SBP and ∆PP. There was no correlation between telomere attrition and incidence of cardiovascular events. Our data indicated that increased telomere length of leukocytes was associated with decreased SBP and PP, particularly for patients who received CCB and ARB, supporting that telomere attrition may provide new sight in clinical intervention for hypertension.
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Affiliation(s)
- Shuyuan Zhang
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Rongxia Li
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Yunyun Yang
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Yu Chen
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Shujun Yang
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Jian Li
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Cunjin Wu
- 2 The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Tao Kong
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Tianlong Liu
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Jun Cai
- 3 Hypertension Centre, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Li Fu
- 4Benxi Railway Hospital, Liaoning, China
| | - Yanan Zhao
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Rutai Hui
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Weili Zhang
- 1State Key Laboratory of Cardiovascular Disease, FuWai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
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145
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Wynchank D, Bijlenga D, Penninx BW, Lamers F, Beekman AT, Kooij JJS, Verhoeven JE. Delayed sleep-onset and biological age: late sleep-onset is associated with shorter telomere length. Sleep 2020; 42:5528107. [PMID: 31270544 DOI: 10.1093/sleep/zsz139] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/08/2019] [Indexed: 12/19/2022] Open
Abstract
STUDY OBJECTIVES We evaluated the relationship between leukocyte telomere length (LTL) and sleep duration, insomnia symptoms, and circadian rhythm, to test whether sleep and chronobiological dysregulations are associated with cellular aging. METHODS Data from the Netherlands Study of Depression and Anxiety (N = 2,936) were used at two waves 6 years apart, to measure LTL. Telomeres shorten during the life span and are important biomarkers for cellular aging. LTL was assessed by qualitative polymerase chain reaction and converted into base pair number. Sleep parameters were: sleep duration and insomnia symptoms from the Insomnia Rating Scale. Circadian rhythm variables were: indication of Delayed Sleep Phase Syndrome (DSPS), mid-sleep corrected for sleep debt on free days (MSFsc), sleep-onset time, and self-reported chronotype, from the Munich Chronotype Questionnaire. Generalized estimating equations analyzed the associations between LTL, sleep, and chronobiological factors, adjusted for baseline age, sex, North European ancestry, and additionally for current smoking, depression severity, obesity, and childhood trauma. RESULTS Indicators of delayed circadian rhythm showed a strong and consistent effect on LTL, after adjustment for sociodemographic and health indicators. Late MSFsc (B = -49.9, p = .004), late sleep-onset time (B = -32.4, p = .001), indication of DSPS (B = -73.8, p = .036), and moderately late chronotype in adulthood (B = -71.6, p = .003) were associated with significantly shorter LTL across both waves; whereas sleep duration and insomnia symptoms were not. Extremely early chronotype showed significantly less LTL shortening than intermediate chronotype (B = 161.40, p = .037). No predictors showed accelerated LTL attrition over 6 years. CONCLUSIONS Individuals with delayed circadian rhythm have significantly shorter LTL, but not faster LTL attrition rates.
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Affiliation(s)
- Dora Wynchank
- PsyQ Expertise Center Adult ADHD, The Hague, The Netherlands
| | - Denise Bijlenga
- PsyQ Expertise Center Adult ADHD, The Hague, The Netherlands
| | - Brenda W Penninx
- Department of Psychiatry, Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam, The Netherlands
| | - Femke Lamers
- Department of Psychiatry, Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam, The Netherlands
| | - Aartjan T Beekman
- Department of Psychiatry, Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam, The Netherlands
| | - J J Sandra Kooij
- PsyQ Expertise Center Adult ADHD, The Hague, The Netherlands.,Department of Psychiatry, Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam, The Netherlands
| | - Josine E Verhoeven
- Department of Psychiatry, Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam, The Netherlands
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146
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Bauch C, Gatt MC, Granadeiro JP, Verhulst S, Catry P. Sex-specific telomere length and dynamics in relation to age and reproductive success in Cory's shearwaters. Mol Ecol 2020; 29:1344-1357. [PMID: 32141666 PMCID: PMC7216837 DOI: 10.1111/mec.15399] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 02/28/2020] [Accepted: 03/02/2020] [Indexed: 12/30/2022]
Abstract
Individuals in free‐living animal populations generally differ substantially in reproductive success, lifespan and other fitness‐related traits, but the molecular mechanisms underlying this variation are poorly understood. Telomere length and dynamics are candidate traits explaining this variation, as long telomeres predict a higher survival probability and telomere loss has been shown to reflect experienced “life stress.” However, telomere dynamics among very long‐lived species are unresolved. Additionally, it is generally not well understood how telomeres relate to reproductive success or sex. We measured telomere length and dynamics in erythrocytes to assess their relationship to age, sex and reproduction in Cory's shearwaters (Calonectris borealis), a long‐lived seabird, in the context of a long‐term study. Adult males had on average 231 bp longer telomeres than females, independent of age. In females, telomere length changed relatively little with age, whereas male telomere length declined significantly. Telomere shortening within males from one year to the next was three times higher than the interannual shortening rate based on cross‐sectional data of males. Past long‐term reproductive success was sex‐specifically reflected in age‐corrected telomere length: males with on average high fledgling production were characterized by shorter telomeres, whereas successful females had longer telomeres, and we discuss hypotheses that may explain this contrast. In conclusion, telomere length and dynamics in relation to age and reproduction are sex‐dependent in Cory's shearwaters and these findings contribute to our understanding of what characterises individual variation in fitness.
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Affiliation(s)
- Christina Bauch
- MARE-Marine and Environmental Sciences Centre, ISPA-Instituto Universitário, Lisbon, Portugal.,Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - Marie Claire Gatt
- CESAM-Centre for Environmental and Marine Studies, Faculty of Science, University of Lisbon, Lisbon, Portugal
| | - José Pedro Granadeiro
- CESAM-Centre for Environmental and Marine Studies, Faculty of Science, University of Lisbon, Lisbon, Portugal
| | - Simon Verhulst
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - Paulo Catry
- MARE-Marine and Environmental Sciences Centre, ISPA-Instituto Universitário, Lisbon, Portugal
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147
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Association of sleep quality with telomere length, a marker of cellular aging: A retrospective cohort study of older adults in the United States. Sleep Health 2020; 6:513-521. [PMID: 32229187 DOI: 10.1016/j.sleh.2019.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 11/25/2019] [Accepted: 12/02/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Sleep quality is a risk factor for age-related diseases, and although the underlying mechanisms remain unclear, the effects of poor sleep quality on telomere length (TL) may play a role. OBJECTIVE The objective of the study was to evaluate the independent association between sleep quality and salivary TL in a large sample of older adults. DESIGN We adopted a retrospective cohort design, and participants comprised 5,268 adults drawn from the Health and Retirement Study. We used the 2006 (baseline) and 2008 (follow-up) waves. Baseline sleep quality was assessed using 4 Likert scale questions (trouble falling asleep, waking up during the night, waking up too early and not being able to fall sleep again, and feeling well rested in the morning). The TL was assessed using the T/S ratio, a continuous variable. The associations between sleep quality and T/S were assessed using multivariable ordinary least squares regressions. All analyses were adjusted for demographics, lifestyle characteristics, psychosocial, and other factors. RESULTS Overall, 16% reported never feeling well rested in the morning; 25.7% of respondents always had trouble waking during the night; and 12.8% always had trouble waking up too early in the morning. Respondents who never felt rested in the morning had significantly shorter TL than those who always felt rested in the morning (adjusted beta = -0.08, standard error = 0.03, P < .01). The composite sleep measure was not significantly associated with shorter TL. CONCLUSIONS In this cohort of older adults, not feeling well rested in the morning was significantly and inversely associated with TL; however, the composite measure of sleep quality was not significantly associated with TL. These findings suggest a potential connection between one of the measures of impaired sleep and reduction in TL, a marker of cellular aging that has been linked to multiple chronic conditions.
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148
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Everson F, Martens DS, Nawrot TS, Goswami N, Mthethwa M, Webster I, Mashele N, Charania S, Kamau F, De Boever P, Strijdom H. Personal exposure to NO 2 and benzene in the Cape Town region of South Africa is associated with shorter leukocyte telomere length in women. ENVIRONMENTAL RESEARCH 2020; 182:108993. [PMID: 31830692 DOI: 10.1016/j.envres.2019.108993] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 11/06/2019] [Accepted: 12/01/2019] [Indexed: 06/10/2023]
Abstract
Air pollution exposure is a major global health concern and has been associated with molecular aging. Unfortunately, the situation has not received much attention in the African region. The aim of this study was to investigate whether current personal ambient NO2 and benzene, toluene, ethyl-benzene and xylenes (ortho (o)-, meta (m)- and para (p)-xylene (BTEX) exposure is associated with leukocyte telomere length (LTL), a marker of molecular ageing, in apparently healthy women (mean ± SD age: 42.5 ± 13.4 years) residing in the Cape Town region of South Africa. The repeated measures study collected data from 61 women. Seven-day median (interquartile range (IQR)) personal NO2 and BTEX exposure levels were determined via compact passive diffusion samplers carried on the person prior to baseline (NO2: 14.2 (9.4-17.2) μg/m³; Benzene: 3.1 (2.1-5.3) μg/m³) and 6-month follow-up (NO2: 10.6 (6.6-13.6) μg/m³; Benzene: 2.2 (1.3-4.9) μg/m³) visits. LTL was measured at baseline and follow-up using a real-time PCR method. Multiple linear mixed model analyses (adjusting for age, body mass index, smoking, employment status, level of education and assessment visit) showed that each IQR increment increase in NO2 (7.0 μg/m³) and benzene (3.3 μg/m³) was associated with -7.30% (95% CI: -10.98 to -3.46%; p < 0.001) and -6.78% (95% CI: -11.88 to -1.39%; p = 0.015) difference in LTL, respectively. The magnitude of these effects of NO2 and benzene corresponds to the effect of an increase of 10.3- and 6.0-year in chronological age on LTL. Our study shows that personal exposures to NO2 and benzene are associated with molecular ageing as indicated by LTL in healthy women residing in the Cape Town region.
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Affiliation(s)
- Frans Everson
- Centre for Cardio-metabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, 8000, South Africa
| | - Dries S Martens
- Centre for Environmental Sciences, Hasselt University, 3590, Diepenbeek, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, 3590, Diepenbeek, Belgium.
| | - Nandu Goswami
- Division of Physiology, Otto Loewi Research Center of Vascular Biology, Immunity and Inflammation, Medical University of Graz, 8036, Graz, Austria
| | - Mashudu Mthethwa
- Centre for Cardio-metabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, 8000, South Africa
| | - Ingrid Webster
- Centre for Cardio-metabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, 8000, South Africa
| | - Nyiko Mashele
- Centre for Cardio-metabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, 8000, South Africa
| | - Sana Charania
- Centre for Cardio-metabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, 8000, South Africa
| | - Festus Kamau
- Centre for Cardio-metabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, 8000, South Africa
| | - Patrick De Boever
- Centre for Environmental Sciences, Hasselt University, 3590, Diepenbeek, Belgium; Health Unit, Flemish Institute for Technological Research (VITO), 2400, Mol, Belgium
| | - Hans Strijdom
- Centre for Cardio-metabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, 8000, South Africa
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149
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Jantunen H, Wasenius N, Guzzardi M, Iozzo P, Kajantie E, Kautiainen H, Salonen M, Eriksson J. Physical Activity and Telomeres in Old Age: A Longitudinal 10-Year Follow-Up Study. Gerontology 2020; 66:315-322. [DOI: 10.1159/000505603] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 12/26/2019] [Indexed: 11/19/2022] Open
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Song N, Li Z, Qin N, Howell CR, Wilson CL, Easton J, Mulder HL, Edmonson MN, Rusch MC, Zhang J, Hudson MM, Yasui Y, Robison LL, Ness KK, Wang Z. Shortened Leukocyte Telomere Length Associates with an Increased Prevalence of Chronic Health Conditions among Survivors of Childhood Cancer: A Report from the St. Jude Lifetime Cohort. Clin Cancer Res 2020; 26:2362-2371. [PMID: 31969337 DOI: 10.1158/1078-0432.ccr-19-2503] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/11/2019] [Accepted: 01/17/2020] [Indexed: 12/19/2022]
Abstract
PURPOSE We aimed to analyze and compare leukocyte telomere length (LTL) and age-dependent LTL attrition between childhood cancer survivors and noncancer controls, and to evaluate the associations of LTL with treatment exposures, chronic health conditions (CHC), and health behaviors among survivors. EXPERIMENTAL DESIGN We included 2,427 survivors and 293 noncancer controls of European ancestry, drawn from the participants in St. Jude Lifetime Cohort Study (SJLIFE), a retrospective hospital-based study with prospective follow-up (2007-2016). Common nonneoplastic CHCs (59 types) and subsequent malignant neoplasms (5 types) were clinically assessed. LTL was measured with whole-genome sequencing data. RESULTS After adjusting for age at DNA sampling, gender, genetic risk score based on 9 SNPs known to be associated with telomere length, and eigenvectors, LTL among survivors was significantly shorter both overall [adjusted mean (AM) = 6.20 kb; SE = 0.03 kb] and across diagnoses than controls (AM = 6.69 kb; SE = 0.07 kb). Among survivors, specific treatment exposures associated with shorter LTL included chest or abdominal irradiation, glucocorticoid, and vincristine chemotherapies. Significant negative associations of LTL with 14 different CHCs, and a positive association with subsequent thyroid cancer occurring out of irradiation field were identified. Health behaviors were significantly associated with LTL among survivors aged 18 to 35 years (P trend = 0.03). CONCLUSIONS LTL is significantly shorter among childhood cancer survivors than noncancer controls, and is associated with CHCs and health behaviors, suggesting LTL as an aging biomarker may be a potential mechanistic target for future intervention studies designed to prevent or delay onset of CHCs in childhood cancer survivors.See related commentary by Walsh, p. 2281.
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Affiliation(s)
- Nan Song
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Zhenghong Li
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Na Qin
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Carrie R Howell
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Carmen L Wilson
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - John Easton
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Heather L Mulder
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Michael N Edmonson
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Michael C Rusch
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Jinghui Zhang
- Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Melissa M Hudson
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee.,Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Yutaka Yasui
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Leslie L Robison
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Kirsten K Ness
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Zhaoming Wang
- Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, Tennessee. .,Department of Computational Biology, St. Jude Children's Research Hospital, Memphis, Tennessee
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