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Kim Y, Lin J, Epel ES, Carver CS. A Lens on Caregiver Stress in Cancer: Longitudinal Investigation of Cancer-Related Stress and Telomere Length Among Family Caregivers of Adult Patients With Cancer. Psychosom Med 2023; 85:527-534. [PMID: 37260287 PMCID: PMC10524877 DOI: 10.1097/psy.0000000000001220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE Family members are typically the primary caregivers of patients with chronic illnesses. Family caregivers of adult relatives with cancer are a fast-growing population, yet the physical consequences of their stress due to the cancer in the family have been poorly understood. This study examined the bidirectional relations of the perceived stress of family caregivers of individuals recently diagnosed with cancer and leukocyte cellular aging indexed by telomere length for 2 years. METHODS Family caregivers ( N = 168; mean age = 51 years, 70% female, 46% Hispanic, 36% spouse to the patient) of patients with colorectal cancer provided psychological data and peripheral blood samples approximately 4 (T1), 12 (T2), and 21 months (T3) after diagnosis. Time-lagged cross-panel modeling was used to test the associations of perceived cancer-related stress and telomere length, controlling for age, sex, and body mass index. RESULTS Cancer-related stress was highest at T1 and decreased by 1 year. Greater cancer-related stress predicted longer telomere length at subsequent assessments for 2 years ( β ≥ 0.911, p ≤ .019). However, telomere length did not change significantly for 2 years overall and did not prospectively predict cancer-related stress over this period. CONCLUSIONS Findings suggest the need to better understand how the perceived stress of colorectal cancer caregivers, which tends to be intense for a relatively short period compared with dementia caregiving, may impact immune cell distributions and telomere length. These findings emphasize the need for further knowledge about psychobiological mechanisms of how cancer caregiving may impact cellular aging.
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Affiliation(s)
| | - Jue Lin
- Department of Biochemistry and Biophysics, University of California, San Francisco
| | - Elissa S. Epel
- Department of Psychiatry, University of California, San Francisco
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2
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Thakur M, Patil Y, Philip ST, Hamdule T, Thimmapuram J, Vyas N, Thakur K. Impact of Heartfulness meditation practice on anxiety, perceived stress, well-being, and telomere length. Front Psychol 2023; 14:1158760. [PMID: 37342644 PMCID: PMC10278541 DOI: 10.3389/fpsyg.2023.1158760] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 05/08/2023] [Indexed: 06/23/2023] Open
Abstract
Objective Exhaustion, stress, and burnout have all been found to be reduced using techniques like yoga and meditation. This study was carried out to check the effectiveness of Heartfulness practice (a form of meditation) on certain psychological and genetic variables. Methods A total of 100 healthy individuals (aged 18-24) were recruited and randomized into two groups-Heartfulness intervention and control group. The intervention was carried out for 03 months. Participants from both groups were analysed for their cortisol levels and telomere length before and after the intervention. Psychometric measures of anxiety, perceived stress, well-being and mindfulness were carried out using Beck Anxiety Inventory (BAI), Perceived Stress Scale (PSS), WHO-Well-being Index (WHO-WBI) and Five Facet Mindfulness Questionnaire (FFMQ). Results The cortisol levels in the meditators group significantly decreased (p < 0.001) after the intervention as compared to the non-meditators group, whereas, the telomere length increased in the mediators group. This increase was not significant (p > 0.05). Anxiety and perceived stress also decreased post intervention, and well-being as well as mindfulness increased, as assessed by the questionnaire tools, although the decrease in perceived stress was statistically insignificant (p > 0.05). A negative correlation was observed between telomere length and cortisol (stress biomarker), whereas a positive correlation was found between telomere length and well-being. Conclusion Our data provide evidence that Heartfulness meditation practice can improve our mental health. Additionally, telomere length is shown to be affected by cortisol levels, and this meditation practice can also help to increase telomere length, and thereby slow down cellular aging. However, future studies with larger sample size are required to confirm our observations.
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Affiliation(s)
- Mansee Thakur
- Department of Medical Biotechnology, Central Research Laboratory, Mahatma Gandhi Mission School of Biomedical Sciences, Mahatma Gandhi Mission Institute of Health Sciences, Navi Mumbai, India
| | - Yogesh Patil
- Department of Medical Biotechnology, Central Research Laboratory, Mahatma Gandhi Mission School of Biomedical Sciences, Mahatma Gandhi Mission Institute of Health Sciences, Navi Mumbai, India
| | - Sanjana T. Philip
- Department of Medical Biotechnology, Central Research Laboratory, Mahatma Gandhi Mission School of Biomedical Sciences, Mahatma Gandhi Mission Institute of Health Sciences, Navi Mumbai, India
| | - Tahreem Hamdule
- Department of Medical Biotechnology, Central Research Laboratory, Mahatma Gandhi Mission School of Biomedical Sciences, Mahatma Gandhi Mission Institute of Health Sciences, Navi Mumbai, India
| | - Jayaram Thimmapuram
- Department of Internal Medicine, Well Span York Hospital, York, PA, United States
| | | | - Kapil Thakur
- SRCM Heartfulness Meditation Centre, Navi Mumbai, India
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3
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Dantzer B. Frank Beach Award Winner: The centrality of the hypothalamic-pituitary-adrenal axis in dealing with environmental change across temporal scales. Horm Behav 2023; 150:105311. [PMID: 36707334 DOI: 10.1016/j.yhbeh.2023.105311] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 01/02/2023] [Accepted: 01/06/2023] [Indexed: 01/26/2023]
Abstract
Understanding if and how individuals and populations cope with environmental change is an enduring question in evolutionary ecology that has renewed importance given the pace of change in the Anthropocene. Two evolutionary strategies of coping with environmental change may be particularly important in rapidly changing environments: adaptive phenotypic plasticity and/or bet hedging. Adaptive plasticity could enable individuals to match their phenotypes to the expected environment if there is an accurate cue predicting the selective environment. Diversifying bet hedging involves the production of seemingly random phenotypes in an unpredictable environment, some of which may be adaptive. Here, I review the central role of the hypothalamic-pituitary-adrenal (HPA) axis and glucocorticoids (GCs) in enabling vertebrates to cope with environmental change through adaptive plasticity and bet hedging. I first describe how the HPA axis mediates three types of adaptive plasticity to cope with environmental change (evasion, tolerance, recovery) over short timescales (e.g., 1-3 generations) before discussing how the implications of GCs on phenotype integration may depend upon the timescale under consideration. GCs can promote adaptive phenotypic integration, but their effects on phenotypic co-variation could also limit the dimensions of phenotypic space explored by animals over longer timescales. Finally, I discuss how organismal responses to environmental stressors can act as a bet hedging mechanism and therefore enhance evolvability by increasing genetic or phenotypic variability or reducing patterns of genetic and phenotypic co-variance. Together, this emphasizes the crucial role of the HPA axis in understanding fundamental questions in evolutionary ecology.
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Affiliation(s)
- Ben Dantzer
- Department of Psychology, University of Michigan, MI 48109 Ann Arbor, MI, USA; Department of Ecology and Evolutionary Biology, University of Michigan, MI 48109, Ann Arbor, MI, USA.
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4
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Borges JV, Pires VN, de Freitas BS, Rübensam G, Vieira VC, de Souza Dos Santos C, Schröder N, Bromberg E. Behavior, BDNF and epigenetic mechanisms in response to social isolation and social support in middle aged rats exposed to chronic stress. Behav Brain Res 2023; 441:114303. [PMID: 36657665 DOI: 10.1016/j.bbr.2023.114303] [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: 08/14/2022] [Revised: 01/11/2023] [Accepted: 01/15/2023] [Indexed: 01/18/2023]
Abstract
Social deprivation can be stressful for group-living mammals. On the other hand, an amazing response of these animals to stress is seeking social contact to give and receive joint protection in threatening situations. We explored the effects of social isolation and social support on epigenetic and behavioral responses to chronic stress. More specifically, we investigated the behavioral responses, corticosterone levels, BDNF gene expression, and markers of hippocampal epigenetic alterations (levels of H3K9 acetylation and methylation, H3K27 methylation, HDAC5, DNMT1, and DNMT3a gene expressions) in middle-aged adult rats maintained in different housing conditions (isolation or accompanied housing) and exposed to the chronic unpredictable stress protocol (CUS). Isolation was associated with decreased basal levels of corticosterone, impaired long-term memory, and decreased expression of the BDNF gene, besides altering the balance of H3K9 from acetylation to methylation and increasing the DNMT1 gene expression. The CUS protocol decreased H3K9 acetylation, besides increasing H3K27 methylation and DNMT1 gene expression, but had no significant effects on memory and BDNF gene expression. Interestingly, the effects of CUS on corticosterone and HDAC5 gene expression were seen only in isolated animals, whereas the effects of CUS on DNMT1 gene expression were more pronounced in isolated than accompanied animals. In conclusion, social isolation in middle age showed broader effects than chronic unpredictable stress on behavioral and epigenetic alterations potentially associated with decreased BDNF expression. Moreover, social support prevented the adverse effects of CUS on HPA axis functioning, HDAC5, and DNMT1 gene expressions.
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Affiliation(s)
- Juliano Viana Borges
- Laboratory of Biology and Development of the Nervous System, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Ipiranga Av. 6681, 90619-900 Porto Alegre, Brazil
| | - Vivian Naziaseno Pires
- Laboratory of Biology and Development of the Nervous System, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Ipiranga Av. 6681, 90619-900 Porto Alegre, Brazil; Institute of Geriatrics and Gerontology, Pontifical Catholic University of Rio Grande do Sul, Ipiranga Av. 6690, 90610-000 Porto Alegre, Brazil
| | - Betânia Souza de Freitas
- Laboratory of Biology and Development of the Nervous System, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Ipiranga Av. 6681, 90619-900 Porto Alegre, Brazil
| | - Gabriel Rübensam
- Center of Toxicology and Pharmacology Research, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Brazil
| | - Vitória Corrêa Vieira
- Laboratory of Biology and Development of the Nervous System, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Ipiranga Av. 6681, 90619-900 Porto Alegre, Brazil
| | - Cristophod de Souza Dos Santos
- Laboratory of Biology and Development of the Nervous System, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Ipiranga Av. 6681, 90619-900 Porto Alegre, Brazil
| | - Nadja Schröder
- National Institute of Science and Technology for Translational Medicine (INCT-TM), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brasília, Brazil; Department of Physiology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Elke Bromberg
- Laboratory of Biology and Development of the Nervous System, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Ipiranga Av. 6681, 90619-900 Porto Alegre, Brazil; Institute of Geriatrics and Gerontology, Pontifical Catholic University of Rio Grande do Sul, Ipiranga Av. 6690, 90610-000 Porto Alegre, Brazil; National Institute of Science and Technology for Translational Medicine (INCT-TM), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brasília, Brazil.
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5
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Noguera JC, da Silva A, Velando A. Egg corticosterone can stimulate telomerase activity and promote longer telomeres during embryo development. Mol Ecol 2022; 31:6252-6260. [PMID: 33065771 DOI: 10.1111/mec.15694] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/22/2020] [Accepted: 10/09/2020] [Indexed: 01/31/2023]
Abstract
It is often assumed that the transfer of maternal glucocorticoids (GCs; e.g., corticosterone or cortisol) to offspring is an inevitable cost associated with adverse or stressful conditions experienced by mothers. However, recent evidence indicates that maternal GCs may adaptively programme particular physiological and molecular pathways during development to enhance offspring fitness. In this context, an important mechanism through which maternal GCs may lastingly affect offspring phenotypic quality and survival is via effects on embryo telomerase activity and so on offspring postnatal telomere length. Here, using a field experimental design for which we manipulated the corticosterone content in yellow-legged gull (Larus michahellis) eggs, we show that embryos from corticosterone-injected eggs not only had a higher telomerase activity but also longer telomeres just after hatching. A complementary analysis further revealed that gull hatchlings with longer telomeres had a higher survival probability during the period when most of the chick mortality occurs. Given the important role that telomere length and its restoring mechanisms have on ageing trajectories and disease risk, our findings provide a new mechanistic link by which mothers may presumably shape offspring life-history trajectories and phenotype.
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Affiliation(s)
- José Carlos Noguera
- Grupo de Ecología Animal (GEA), Centro de Investigacion Mariña (CIM), Universidad de Vigo, Vigo, 36310, Spain
| | - Alberto da Silva
- Grupo de Ecología Animal (GEA), Centro de Investigacion Mariña (CIM), Universidad de Vigo, Vigo, 36310, Spain
| | - Alberto Velando
- Grupo de Ecología Animal (GEA), Centro de Investigacion Mariña (CIM), Universidad de Vigo, Vigo, 36310, Spain
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6
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Wolf SE, Sanders TL, Beltran SE, Rosvall KA. The telomere regulatory gene POT1 responds to stress and predicts performance in nature: Implications for telomeres and life history evolution. Mol Ecol 2022; 31:6155-6171. [PMID: 34674335 DOI: 10.1111/mec.16237] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 09/25/2021] [Accepted: 10/12/2021] [Indexed: 02/02/2023]
Abstract
Telomeres are emerging as correlates of fitness-related traits and may be important mediators of ecologically relevant variation in life history strategies. Growing evidence suggests that telomere dynamics can be more predictive of performance than length itself, but very little work considers how telomere regulatory mechanisms respond to environmental challenges or influence performance in nature. Here, we combine observational and experimental data sets from free-living tree swallows (Tachycineta bicolor) to assess how performance is predicted by the telomere regulatory gene POT1, which encodes a shelterin protein that sterically blocks telomerase from repairing the telomere. First, we show that lower POT1 gene expression in the blood was associated with higher female quality, that is, earlier breeding and heavier body mass. We next challenged mothers with an immune stressor (lipopolysaccharide injection) that led to "sickness" in mothers and 24 h of food restriction in their offspring. While POT1 did not respond to maternal injection, females with lower constitutive POT1 gene expression were better able to maintain feeding rates following treatment. Maternal injection also generated a 1-day stressor for chicks, which responded with lower POT1 gene expression and elongated telomeres. Other putatively stress-responsive mechanisms (i.e., glucocorticoids, antioxidants) showed marginal responses in stress-exposed chicks. Model comparisons indicated that POT1 mRNA abundance was a largely better predictor of performance than telomere dynamics, indicating that telomere regulators may be powerful modulators of variation in life history strategies.
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Affiliation(s)
- Sarah E Wolf
- Department of Biology, Indiana University, Bloomington, Indiana, USA.,Center for the Integrative Study of Animal Behavior, Indiana University, Bloomington, Indiana, USA
| | - Tiana L Sanders
- Center for the Integrative Study of Animal Behavior, Indiana University, Bloomington, Indiana, USA
| | - Sol E Beltran
- Center for the Integrative Study of Animal Behavior, Indiana University, Bloomington, Indiana, USA
| | - Kimberly A Rosvall
- Department of Biology, Indiana University, Bloomington, Indiana, USA.,Center for the Integrative Study of Animal Behavior, Indiana University, Bloomington, Indiana, USA
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7
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Lynn SE, Kern MD, Serrurier B, Sirman A, Heidinger BJ. Chill out: Environmentally relevant cooling challenge does not increase telomere loss during early life. Gen Comp Endocrinol 2022; 329:114108. [PMID: 35988638 DOI: 10.1016/j.ygcen.2022.114108] [Citation(s) in RCA: 3] [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] [Received: 03/30/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 11/04/2022]
Abstract
In vertebrates, exposure to diverse stressors during early life activates a stress response that can initiate compensatory mechanisms or promote cellular damage with long-term fitness consequences. A growing number of studies associate exposure to stressors during early life with increased damage to telomeres (i.e., promoting the shortening of these highly conserved, repeating sequences of non-coding DNA at chromosome ends). However, some studies show no such relationship, suggesting that the nature, timing, and context of these challenges may determine the degree to which physiological mediators of the stress response act in a damage-mitigating or damage promoting way in relation to telomere dynamics. In free-living eastern bluebirds (Sialia sialis), we have previously demonstrated that bouts of offspring cooling that occur when brooding females leave the nest increase at least one such physiological mediator of the stress response (circulating glucocorticoids), suggesting that variation in patterns of maternal brooding may result in different impacts on telomere dynamics at a young age. Here we experimentally tested whether repeated bouts of ecologically relevant offspring cooling affected telomere dynamics during post-natal development. Rates of telomere shortening during the nestling stage were not affected by experimental cooling, but they were affected by brood size and the rate of growth during the nestling stage. Our data suggest that the effects of developmental stress exposure on offspring telomeres are often context-dependent and that not all challenges that increase physiological mediators of stress result in damage to telomeres. Under some conditions, physiological mediators of stress may instead act as protective regulators, allowing for optimization of fitness outcomes in the face of environmental challenges.
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Affiliation(s)
- Sharon E Lynn
- The College of Wooster, Department of Biology, 931 College Mall, Wooster OH 44691, United States.
| | - Michael D Kern
- The College of Wooster, Department of Biology, 931 College Mall, Wooster OH 44691, United States
| | - Bridget Serrurier
- The College of Wooster, Department of Biology, 931 College Mall, Wooster OH 44691, United States
| | - Aubrey Sirman
- North Dakota State University, Department of Biological Sciences, Fargo ND 58108, United States
| | - Britt J Heidinger
- North Dakota State University, Department of Biological Sciences, Fargo ND 58108, United States
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8
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Smith S, Hoelzl F, Zahn S, Criscuolo F. Telomerase activity in ecological studies: What are its consequences for individual physiology and is there evidence for effects and trade-offs in wild populations. Mol Ecol 2022; 31:6239-6251. [PMID: 34664335 PMCID: PMC9788021 DOI: 10.1111/mec.16233] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 09/10/2021] [Accepted: 09/24/2021] [Indexed: 02/02/2023]
Abstract
Increasing evidence at the cellular level is helping to provide proximate explanations for the balance between investment in growth, reproduction and somatic maintenance in wild populations. Studies of telomere dynamics have informed researchers about the loss and gain of telomere length both on a seasonal scale and across the lifespan of individuals. In addition, telomere length and telomere rate of loss seems to have evolved differently among taxonomic groups, and relate differently to organismal diversity of lifespan. So far, the mechanisms behind telomere maintenance remain elusive, although many studies have inferred a role for telomerase, an enzyme/RNA complex known to induce telomere elongation from laboratory studies. Exciting further work is also emerging that suggests telomerase (and/or its individual component parts) has a role in fitness that goes beyond the maintenance of telomere length. Here, we review the literature on telomerase biology and examine the evidence from ecological studies for the timing and extent of telomerase activation in relation to life history events associated with telomere maintenance. We suggest that the underlying mechanism is more complicated than originally anticipated, possibly involves several complimentary pathways, and is probably associated with high energetic costs. Potential pathways for future research are numerous and we outline what we see as the most promising prospects to expand our understanding of individual differences in immunity or reproduction efficiency.
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Affiliation(s)
- Steve Smith
- Konrad Lorenz Institute of EthologyUniversity of Veterinary Medicine, ViennaViennaAustria
| | - Franz Hoelzl
- Konrad Lorenz Institute of EthologyUniversity of Veterinary Medicine, ViennaViennaAustria
| | - Sandrine Zahn
- Department of Physiology, Evolution and BehaviourInstitut Pluridisciplinaire Hubert CurienCNRSUniversity of StrasbourgStrasbourgFrance
| | - François Criscuolo
- Department of Physiology, Evolution and BehaviourInstitut Pluridisciplinaire Hubert CurienCNRSUniversity of StrasbourgStrasbourgFrance
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9
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Rungnirundorn T, Krusong K, Kalayasiri R, Maes M. Leukocyte telomere length is not shortened in methamphetamine dependence or methamphetamine-induced psychosis but is increased following traumatic events. World J Biol Psychiatry 2022; 23:613-621. [PMID: 34895035 PMCID: PMC9991870 DOI: 10.1080/15622975.2021.2016957] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 01/25/2023]
Abstract
OBJECTIVE This study aims to examine the effects of methamphetamine (MA) use and dependence and MA withdrawal symptoms on the telomere length and whether shortening of the latter is associated with MA-induced psychosis (MIP). METHODS This study included 185 MA-abuse, 118 MA-dependent, and 67 MIP patients, diagnosed using DSM-IV criteria. The Semi-structured Assessment for Drug Dependence and Alcoholism (SSADDA) questionnaire was employed to collect MA-related data. MIP was confirmed using the Methamphetamine Experience Questionnaire (MEQ). The leukocyte telomere length was measured using real-time polymerase chain reaction measuring the Telomere/Single gene ratio (T/S ratio). Data were analysed using multivariate statistical analyses. RESULTS There were no significant associations between the T/S ratio and severity of MA-use, MIP, and MA withdrawal symptoms. MIP was significantly predicted by alcohol dependence, antisocial personality disorder, and MA-use severity. There were significantly positive associations between the T/S ratio and previous traumatic and life-threatening events. The T/S ratio was not affected by alcohol and nicotine dependence. Alcohol and nicotine dependence, antisocial personality disorder, and severity of MA use increased risk of MA withdrawal symptoms. CONCLUSION MIP and MA-use severity are not associated with leukocyte telomere length, but previous traumatic and life-threatening events are associated with increased telomere length.
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Affiliation(s)
| | - Kuakarun Krusong
- Structural and Computational Biology Research Unit, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Rasmon Kalayasiri
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Michael Maes
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Department of Psychiatry, Medical University of Plovdiv, Plovdiv, Bulgaria
- IMPACT Strategic Research Centre, Deakin University, PO Box 281, Geelong, VIC, 3220, Australia
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10
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Bürgin D, Clemens V, Varghese N, Eckert A, Huber M, Bruttin E, Boonmann C, Unternährer E, O'Donovan A, Schmid M. Adverse and traumatic exposures, posttraumatic stress disorder, telomere length, and hair cortisol – Exploring associations in a high-risk sample of young adult residential care leavers. Brain Behav Immun Health 2022; 26:100524. [PMID: 36213488 PMCID: PMC9535425 DOI: 10.1016/j.bbih.2022.100524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 08/17/2022] [Accepted: 09/25/2022] [Indexed: 12/02/2022] Open
Abstract
Background Childhood adversities (CAs), potentially traumatic exposures (PTEs), and posttraumatic stress disorder (PTSD) are known to increase the risk for poor health outcomes, including diseases of aging and early mortality. Telomere length (TL) and hair cortisol concentrations (HCC) are biomarkers known to be associated with CA and PTEs, and PTSD, but there is considerable heterogeneity in findings. Objectives This study aims to investigate the association of CAs, PTEs, and PTSD with TL and HCC in a high-risk sample of young adults who were previously placed in youth residential care institutions throughout Switzerland. Method Our sample includes 130 participants (30.8% women, M Age = 26.5 ± 3.7 years) with previous youth residential care placements (MPlacements= 3.9). CAs and PTEs, as well as PTSD, were assessed with self-reported questionnaires and semi-structured clinical interviews. Immune cell TL was measured with quantitative polymerase chain reaction (qPCR) in whole blood. Hair samples were collected for HCC measurement and assayed with high-sensitivity ELISA. Multivariate regression models were fitted to describe the associations between CAs, PTEs, and PTSD with TL and HCC, adjusting for covariates. Results In our high-risk sample, a higher burden of CAs, PTEs, Criterion A trauma, and PTSD was associated with longer TL. PTEs, Criterion A trauma, and PTSD were associated with lower HCC, however no significant associations between CAs and HCC were found. The magnitude of these effects varied depending on the dimensional or categorical nature of the stress-phenotype and the specific measure used. Conclusions Our findings are in contrast with many, but not all, previous studies of associations between adversity and both TL and HCC. For instance, our findings are in line with other studies that find a state of hypocortisolism in PTSD. Better measurement of adversities and trauma, multisystem biomarker approaches, and more research in larger high-risk samples at the upper end of the adversity-continuum is warranted. In this high-risk sample,childhood adversities, potential traumatic exposures, criterion A trauma, or posttraumatic stress disorder (PTSD) was associated with longer telomere length (TL). Potentially traumatic exposures, criterion A trauma, and PTSD were associated with lower hair cortisol concentrations. The magnitude of these effects varied depending on the dimensional or categorical nature of the stress-phenotype and the specific measure used. Hypocortisolism might explain findings of longer TL in participants with cumulated adverse and traumatic exposures. Research in high-risk populations is strongly needed as results across the entire spectrum of adversity exposures may not generalize to the top end of the spectrum.
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Affiliation(s)
- David Bürgin
- Research Department for Child and Adolescent Psychiatry, University Psychiatric Hospitals Basel, University of Basel, Basel, Switzerland
- Department for Child and Adolescent Psychiatry and Psychotherapy, University Hospital Ulm, Ulm, Germany
- Department of Psychiatry and Weill Institute for Neurosciences, University of California San Francisco, San Francisco, USA
- San Francisco Veterans Affairs Medical Center, San Francisco, CA, USA
- Corresponding author. University Psychiatric Hospitals Basel Research Department for Child and Adolescent Psychiatry Wilhelm-Klein Strasse 27, 4056, Basel, Switzerland.
| | - Vera Clemens
- Department for Child and Adolescent Psychiatry and Psychotherapy, University Hospital Ulm, Ulm, Germany
| | - Nimmy Varghese
- Neurobiological Laboratory for Brain Aging and Mental Health, Transfaculty Research Platform, University of Basel, Basel, Switzerland
| | - Anne Eckert
- Neurobiological Laboratory for Brain Aging and Mental Health, Transfaculty Research Platform, University of Basel, Basel, Switzerland
| | - Mara Huber
- Research Department for Child and Adolescent Psychiatry, University Psychiatric Hospitals Basel, University of Basel, Basel, Switzerland
| | - Evelyne Bruttin
- Research Department for Child and Adolescent Psychiatry, University Psychiatric Hospitals Basel, University of Basel, Basel, Switzerland
| | - Cyril Boonmann
- Research Department for Child and Adolescent Psychiatry, University Psychiatric Hospitals Basel, University of Basel, Basel, Switzerland
| | - Eva Unternährer
- Research Department for Child and Adolescent Psychiatry, University Psychiatric Hospitals Basel, University of Basel, Basel, Switzerland
| | - Aoife O'Donovan
- Department of Psychiatry and Weill Institute for Neurosciences, University of California San Francisco, San Francisco, USA
- San Francisco Veterans Affairs Medical Center, San Francisco, CA, USA
| | - Marc Schmid
- Research Department for Child and Adolescent Psychiatry, University Psychiatric Hospitals Basel, University of Basel, Basel, Switzerland
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11
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Lemonnier C, Bize P, Boonstra R, Dobson FS, Criscuolo F, Viblanc VA. Effects of the social environment on vertebrate fitness and health in nature: Moving beyond the stress axis. Horm Behav 2022; 145:105232. [PMID: 35853411 DOI: 10.1016/j.yhbeh.2022.105232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/04/2022] [Accepted: 06/22/2022] [Indexed: 11/22/2022]
Abstract
Social interactions are a ubiquitous feature of the lives of vertebrate species. These may be cooperative or competitive, and shape the dynamics of social systems, with profound effects on individual behavior, physiology, fitness, and health. On one hand, a wealth of studies on humans, laboratory animal models, and captive species have focused on understanding the relationships between social interactions and individual health within the context of disease and pathology. On the other, ecological studies are attempting an understanding of how social interactions shape individual phenotypes in the wild, and the consequences this entails in terms of adaptation. Whereas numerous studies in wild vertebrates have focused on the relationships between social environments and the stress axis, much remains to be done in understanding how socially-related activation of the stress axis coordinates other key physiological functions related to health. Here, we review the state of our current knowledge on the effects that social interactions may have on other markers of vertebrate fitness and health. Building upon complementary findings from the biomedical and ecological fields, we identify 6 key physiological functions (cellular metabolism, oxidative stress, cellular senescence, immunity, brain function, and the regulation of biological rhythms) which are intimately related to the stress axis, and likely directly affected by social interactions. Our goal is a holistic understanding of how social environments affect vertebrate fitness and health in the wild. Whereas both social interactions and social environments are recognized as important sources of phenotypic variation, their consequences on vertebrate fitness, and the adaptive nature of social-stress-induced phenotypes, remain unclear. Social flexibility, or the ability of an animal to change its social behavior with resulting changes in social systems in response to fluctuating environments, has emerged as a critical underlying factor that may buffer the beneficial and detrimental effects of social environments on vertebrate fitness and health.
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Affiliation(s)
- Camille Lemonnier
- Ecole Normale Supérieur de Lyon, 69342 Lyon, France; Université de Strasbourg, CNRS, IPHC UMR 7178, 67000 Strasbourg, France.
| | - Pierre Bize
- School of Biological Sciences, University of Aberdeen, Aberdeen, UK; Swiss Institute of Ornithology, Sempach, Switzerland
| | - Rudy Boonstra
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, Canada
| | - F Stephen Dobson
- Université de Strasbourg, CNRS, IPHC UMR 7178, 67000 Strasbourg, France; Department of Biological Sciences, Auburn University, Auburn, AL, USA
| | | | - Vincent A Viblanc
- Université de Strasbourg, CNRS, IPHC UMR 7178, 67000 Strasbourg, France
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12
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Marasco V, Smith S, Angelier F. How does early-life adversity shape telomere dynamics during adulthood? Problems and paradigms. Bioessays 2022; 44:e2100184. [PMID: 35122449 DOI: 10.1002/bies.202100184] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 01/06/2023]
Abstract
Although early-life adversity has been associated with negative consequences during adulthood, growing evidence shows that such adversity can also lead to subsequent stress resilience and positive fitness outcomes. Telomere dynamics are relevant in this context because of the link with developmental conditions and longevity. However, few studies have assessed whether the effects of early-life adversity on developmental telomere dynamics may relate to adult telomere dynamics. We propose that the potential links between early-life adversity and adult telomere dynamics could be driven by developmental constraints (the Constraint hypothesis), by the nature/severity of developmental adversity (the Resilience hypothesis), or by developmental-mediated changes in individual life-history strategies (the Pace of Life hypothesis). We discuss these non-mutually exclusive hypotheses, explore future research directions, and propose specific studies to test these hypotheses. Our article aims to expand our understanding of the evolutionary role of developmental conditions on adult telomere dynamics, stress resilience and ageing.
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Affiliation(s)
- Valeria Marasco
- Konrad Lorenz Institute of Ethology (KLIVV), University of Veterinary Medicine Vienna, Vienna, Austria
| | - Steve Smith
- Konrad Lorenz Institute of Ethology (KLIVV), University of Veterinary Medicine Vienna, Vienna, Austria
| | - Frédéric Angelier
- Centre d'Etudes Biologiques de Chizé, Centre National de la Recherche Scientifique (CNRS)-La Rochelle Université (LRU), UMR 7372, Villiers en Bois, France
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13
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Effect of oxidative stress on telomere maintenance in aortic smooth muscle cells. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166397. [PMID: 35346819 DOI: 10.1016/j.bbadis.2022.166397] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 03/11/2022] [Accepted: 03/14/2022] [Indexed: 12/12/2022]
Abstract
Reactive oxygen species (ROS) and telomere dysfunction are both associated with aging and the development of age-related diseases. Although there is evidence for a direct relationship between ROS and telomere dysfunction as well as an independent association of oxidative stress and telomere attrition with age-related disorders, there has not been sufficient exploration of how the interaction between oxidative stress and telomere function may contribute to the pathophysiology of cardiovascular diseases (CVD). To better understand the complex relationships between oxidative stress, telomerase biology and pathophysiology, we examined the telomere biology of aortic smooth muscle cells (ASMCs) isolated from mutant mouse models of oxidative stress. We discovered that telomere lengths were significantly shorter in ASMCs isolated from superoxide dismutase 2 heterozygous (Sod2+/-) mice, which exhibit increased arterial stiffness with aging, and the observed telomere attrition occurred over time. Furthermore, the telomere erosion occurred even though telomerase activity increased. In contrast, telomeres remained stable in wild-type and superoxide dismutase 1 heterozygous (Sod1+/-) mice, which do not exhibit CVD phenotypes. The data indicate that mitochondrial oxidative stress, in particular elevated superoxide levels and decreased hydrogen peroxide levels, induces telomere erosion in the ASMCs of the Sod2+/- mice. This reduction in telomere length occurs despite an increase in telomerase activity and correlates with the onset of disease phenotype. Our results suggest that the oxidative stress caused by imbalance in mitochondrial ROS, from deficient SOD2 activity as a model for mitochondrial dysfunction results in telomere dysfunction, which may contribute to pathogenesis of CVD.
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14
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Dantzer B, Boutin S, Lane JE, McAdam AG. Integrative Studies of the Effects of Mothers on Offspring: An Example from Wild North American Red Squirrels. ADVANCES IN NEUROBIOLOGY 2022; 27:269-296. [PMID: 36169819 DOI: 10.1007/978-3-030-97762-7_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Animal species vary in whether they provide parental care or the type of care provided, and this variation in parental care among species has been a common focus of comparative studies. However, the proximate causes and ultimate consequences of within-species variation in parental care have been less studied. Most studies about the impacts of within-species variation in parental care on parental fitness have been in primates, whereas studies in laboratory rodents have been invaluable for understanding what causes inter-individual variation in parental care and its influence on offspring characteristics. We integrated both of these perspectives in our long-term study of North American red squirrels (Tamiasciurus hudsonicus) in the Yukon, Canada, where we have focused on understanding the impacts of mothers on offspring. This includes documenting the impacts that mothers or the maternal environment itself has on their offspring, identifying how changes in maternal physiology impact offspring characteristics, the presence of individual variation in maternal attentiveness toward offspring before weaning and its fitness consequences, and postweaning maternal care and its fitness consequences. We provide an overview of these contributions to understanding the impacts mothers have on their offspring in red squirrels using an integrative framework and contrast them with studies in the laboratory.
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Affiliation(s)
- Ben Dantzer
- Department of Psychology, University of Michigan, Ann Arbor, MI, USA.
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, USA.
| | - Stan Boutin
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Jeffrey E Lane
- Department of Biology, University of Saskatchewan, Saskatoon, SK, Canada
| | - Andrew G McAdam
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA
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15
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Lee RS, Zandi PP, Santos A, Aulinas A, Carey JL, Webb SM, McCaul ME, Resmini E, Wand GS. Cross-species Association Between Telomere Length and Glucocorticoid Exposure. J Clin Endocrinol Metab 2021; 106:e5124-e5135. [PMID: 34265046 PMCID: PMC8787853 DOI: 10.1210/clinem/dgab519] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Indexed: 12/12/2022]
Abstract
CONTEXT Chronic exposure to glucocorticoids (GCs) or stress increases the risk of medical disorders, including cardiovascular and neuropsychiatric disorders. GCs contribute to accelerated aging; however, while the link between chronic GC exposure and disease onset is well established, the underpinning mechanisms are not clear. OBJECTIVE We explored the potential nexus between GCs or stress exposure and telomere length. METHODS In addition to rats exposed to 3 weeks of chronic stress, an iatrogenic mouse model of Cushing syndrome (CS), and a mouse neuronal cell line, we studied 32 patients with CS and age-matched controls and another cohort of 75 healthy humans. RESULTS (1) Exposure to stress in rats was associated with a 54.5% (P = 0.036) reduction in telomere length in T cells. Genomic DNA (gDNA) extracted from the dentate gyrus of stressed and unstressed rats showed 43.2% reduction in telomere length (P = 0.006). (2) Mice exposed to corticosterone had a 61.4% reduction in telomere length in blood gDNA (P = 5.75 × 10-5) and 58.8% reduction in telomere length in the dentate gyrus (P = 0.002). (3) We observed a 40.8% reduction in the telomere length in patients with active CS compared to healthy controls (P = 0.006). There was a 17.8% reduction in telomere length in cured CS patients, which was not different from that of healthy controls (P = 0.08). For both cured and active CS, telomere length correlated significantly with duration of hypercortisolism (R2 = 0.22, P = 0.007). (4) There was a 27.6% reduction in telomere length between low and high tertiles in bedtime cortisol levels of healthy participants (P = 0.019). CONCLUSION Our findings demonstrate that exposure to stress and/or GCs is associated with shortened telomeres, which may be partially reversible.
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Affiliation(s)
- Richard S Lee
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Peter P Zandi
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
- Department of Mental Health, Johns Hopkins School of Public Health, Baltimore, MD 21205, USA
| | - Alicia Santos
- Endocrinology/Medicine Department, Hospital Sant Pau, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBER-ER, Unit747), IIB-Sant Pau, ISCIII and Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Anna Aulinas
- Endocrinology/Medicine Department, Hospital Sant Pau, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBER-ER, Unit747), IIB-Sant Pau, ISCIII and Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Jenny L Carey
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Susan M Webb
- Endocrinology/Medicine Department, Hospital Sant Pau, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBER-ER, Unit747), IIB-Sant Pau, ISCIII and Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Mary E McCaul
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Eugenia Resmini
- Correspondence: Eugenia Resmini, MD, PhD, Endocrinology/Medicine Department, Hospital Sant Pau, CIBER-ER, Unit747, IIB-Sant Pau, ISCIII, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain.
| | - Gary S Wand
- Gary S. Wand, MD, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA.
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16
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Bazaz MR, Balasubramanian R, Monroy-Jaramillo N, Dandekar MP. Linking the Triad of Telomere Length, Inflammation, and Gut Dysbiosis in the Manifestation of Depression. ACS Chem Neurosci 2021; 12:3516-3526. [PMID: 34547897 DOI: 10.1021/acschemneuro.1c00457] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Telomere length is an indispensable marker for cellular and biological aging, and it also represents an individual's physical and mental health status. Telomere shortening has been observed in chronic inflammatory conditions, which in turn accelerates aging and risk for psychiatric disorders, including depression. Considering the influence of inflammation and telomere shortening on the gut-brain axis, herein we describe a plausible interplay between telomere attrition, inflammation, and gut dysbiosis in the neurobiology of depression. Telomere shortening and hyperinflammation are well reported in depression. A negative impact of augmented inflammation has been noted on the intestinal permeability and microbial consortia and their byproducts in depressive patients. Moreover, gut dysbiosis provokes host-immune responses. As the gut microbiome is gaining importance in the manifestation and management of depression, herein we discuss whether telomere attrition is connected with the perturbation of commensal microflora. We also describe a pathological connection of cortisol with hyperinflammation, telomere shortening, and gut dysbiosis occurring in depression. This review summarizes how the triad of telomere attrition, inflammation, and gut dysbiosis is interconnected and modulates the risk for depression by regulating the systemic cortisol levels.
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Affiliation(s)
- Mohd Rabi Bazaz
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India, 500037
| | - Ramya Balasubramanian
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India, 500037
| | - Nancy Monroy-Jaramillo
- Department of Genetics, National Institute of Neurology and Neurosurgery Manuel Velasco Suárez (NINN), Mexico City, Mexico, 14269
| | - Manoj P. Dandekar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India, 500037
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Salmón P, Millet C, Selman C, Monaghan P. Growth acceleration results in faster telomere shortening later in life. Proc Biol Sci 2021; 288:20211118. [PMID: 34375555 PMCID: PMC8354743 DOI: 10.1098/rspb.2021.1118] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 07/16/2021] [Indexed: 11/12/2022] Open
Abstract
There is a wealth of evidence for a lifespan penalty when environmental conditions influence an individual's growth trajectory, such that growth rate is accelerated to attain a target size within a limited time period. Given this empirically demonstrated relationship between accelerated growth and lifespan, and the links between lifespan and telomere dynamics, increased telomere loss could underpin this growth-lifespan trade. We experimentally modified the growth trajectory of nestling zebra finches (Taeniopygia guttata), inducing a group of nestlings to accelerate their growth between 7 and 15 days of age, the main phase of body growth. We then sequentially measured their telomere length in red blood cells at various time points from 7 days to full adulthood (120 days). Accelerated growth between 7 and 15 days was not associated with a detectable increase in telomere shortening during this period compared with controls. However, only in the treatment group induced to show growth acceleration was the rate of growth during the experimental period positively related to the amount of telomere shortening between 15 and 120 days. Our findings provide evidence of a long-term influence of growth rate on later-life telomere shortening, but only when individuals have accelerated growth in response to environmental circumstances.
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Affiliation(s)
- Pablo Salmón
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Graham Kerr Building, Glasgow G12 8QQ, UK
| | - Caroline Millet
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Graham Kerr Building, Glasgow G12 8QQ, UK
| | - Colin Selman
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Graham Kerr Building, Glasgow G12 8QQ, UK
| | - Pat Monaghan
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Graham Kerr Building, Glasgow G12 8QQ, UK
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18
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Marasco V, Boner W, Griffiths K, Heidinger B, Monaghan P. Repeated exposure to challenging environmental conditions influences telomere dynamics across adult life as predicted by changes in mortality risk. FASEB J 2021; 35:e21743. [PMID: 34192361 DOI: 10.1096/fj.202100556r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/27/2021] [Accepted: 06/07/2021] [Indexed: 12/15/2022]
Abstract
The effects of stress exposure are likely to vary depending on life-stage and stressor. While it has been postulated that mild stress exposure may have beneficial effects, the duration of such effects and the underlying mechanisms are unclear. While the long-term effects of early-life stress are relatively well studied, we know much less about the effects of exposure in adulthood since the early- and adult-life environments are often similar. We previously reported that repeated experimental exposure to a relatively mild stressor in female zebra finches, first experienced in young adulthood, initially had no effect on mortality risk, reduced mortality in middle age, but the apparently beneficial effects disappeared in old age. We show here that this is underpinned by differences between the control and stress-exposed group in the pattern of telomere change, with stress-exposed birds showing reduced telomere loss in middle adulthood. We thereby provide novel experimental evidence that telomere dynamics play a key role linking stress resilience and aging.
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Affiliation(s)
- Valeria Marasco
- Konrad Lorenz Institute of Ethology, University of Veterinary Medicine Vienna, Vienna, Austria
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
| | - Winnie Boner
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
| | - Kate Griffiths
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
| | - Britt Heidinger
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
- Biological Sciences Department, North Dakota State University, Fargo, ND, USA
| | - Pat Monaghan
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
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19
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The Association of Individual Changes in Stressful Life Events and Telomere Length Over Time in Twins 50 Years and Older. Psychosom Med 2021; 82:614-622. [PMID: 32427758 DOI: 10.1097/psy.0000000000000826] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Exposure to adverse stressors has been associated with shortening of leukocyte telomere length (LTL). The present longitudinal study investigates the time course of exposure to life events and LTL to determine whether increases in exposure to life events are related to subsequent accelerated LTL shortening. METHODS In the Swedish Adoption/Twin Study of Aging, we assessed late-life stressful events and LTL in 543 individual participants (mean age = 68.4 years, 40% men, including 48 complete monozygotic twin pairs and 167 complete dizygotic twin pairs) in up to five separate measurements over a period of 25 years. LTL was measured using quantitative polymerase chain reaction. Longitudinal analyses were conducted using time-varying mixed modeling, corrected for life-style factors and depressive symptoms. RESULTS When adjusting for differences in genetic makeup by looking only in monozygotic twins, we found that an increase in life stressors within an individual was related to decreased LTL over time (B = -0.02; 95% confidence interval = -0.04 to 0.01; p = .002). None of the findings were significant when only looking at dizygotic twins (all, p > .05). CONCLUSIONS Our findings in an older population show a causal relation between increase in life stress and accelerated LTL shortening by using intraindividual time-varying analysis.
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20
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The Power of Stress: The Telo-Hormesis Hypothesis. Cells 2021; 10:cells10051156. [PMID: 34064566 PMCID: PMC8151059 DOI: 10.3390/cells10051156] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/29/2021] [Accepted: 05/06/2021] [Indexed: 02/06/2023] Open
Abstract
Adaptative response to stress is a strategy conserved across evolution to promote survival. In this context, the groundbreaking findings of Miroslav Radman on the adaptative value of changing mutation rates opened new avenues in our understanding of stress response. Inspired by this work, we explore here the putative beneficial effects of changing the ends of eukaryotic chromosomes, the telomeres, in response to stress. We first summarize basic principles in telomere biology and then describe how various types of stress can alter telomere structure and functions. Finally, we discuss the hypothesis of stress-induced telomere signaling with hormetic effects.
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21
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Sarıbal D, Kireçtepe Aydın A, Kılıç MA, Shakil F, Balkaya M. Maternal neglect results in reduced telomerase activity and increased oxidative load in rats. Stress 2021; 24:348-352. [PMID: 32588701 DOI: 10.1080/10253890.2020.1777973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
A growing number of studies in humans have linked chronic stress, particularly during early life, to telomere shortening and increased oxidative stress. The effect of stress on telomerase activity, however, is understudied. Given the importance of telomere attrition in a wide range of diseases and immunosenescence, further research to elucidate the mechanisms by which stress alters telomere dynamics is required. However, animal studies are lacking, and it is not clear whether widely used stress models reliably mimic the accelerated telomere shortening observed humans. To this end, we evaluated the effect of maternal separation with early weaning (MSEW) on telomere length, telomerase activity, and oxidative load in rats. A total of 45 animals were used, (17 control: 3 males and 11 females and 28 MSEW: 11 males, 17 females), which were then sacrificed one year after birth. Importantly, we determined that telomerase activity measured in plasma was significantly decreased in the MSEW group, along with a non-significant reduction in telomere length from whole blood cells. We also examined the levels of three oxidative markers: plasma malondialdehyde, glutathione in erythrocytes, and plasma catalase activity. Malondialdehyde was found to be elevated in the plasma, indicating increased lipid peroxidation. Interestingly, while the antioxidant glutathione was upregulated, catalase activity remained unchanged. Our findings indicate that the rat MSEW model induces chronic changes to telomere dynamics and oxidative load and can capitulate long term aspects of human childhood stress.
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Affiliation(s)
- Devrim Sarıbal
- Department of Biophysics, Cerrahpaşa Medical Faculty, İstanbul University - Cerrahpaşa, İstanbul, Turkey
| | - Aslı Kireçtepe Aydın
- Department of Molecular Biology-Genetics and Biotechnology, Graduate School of Science, Engineering and Technology, İstanbul Technical University, İstanbul, Turkey
| | - Mahmut Alp Kılıç
- Department of Biophysics, Adnan Menderes University Medical Faculty, Aydin, Turkey
| | | | - Mustafa Balkaya
- Department of Physiology, Bahçesehir University Medical Faculty, İstanbul, Turkey
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22
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PBMC telomerase activity in depression and the response to electroconvulsive therapy. Eur Arch Psychiatry Clin Neurosci 2021; 271:1297-1307. [PMID: 34268617 PMCID: PMC8429154 DOI: 10.1007/s00406-021-01294-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 07/04/2021] [Indexed: 12/02/2022]
Abstract
Telomerase, the DNA polymerase responsible for maintaining telomere length, has previously been implicated in depression and the response to antidepressant drugs. In this study, we aimed to compare telomerase activity in peripheral blood mononuclear cells between patients with severe depression recruited as part of the KEEP-WELL Trial (Ketamine for Depression Relapse Prevention Following ECT; NCT02414932) and age- and sex-matched healthy volunteers both at baseline/pre-ECT and at follow-up 1 month later for controls or in patients after a course of ECT. We found no differences in telomerase activity between patients with depression (n = 20) compared to healthy controls (n = 33) at baseline/pre-ECT, or between patients treated with ECT compared to controls at follow-up. In patients, telomerase activity was not associated with mood, as assessed by the 24-item Hamilton Rating Scale for Depression, or the duration of the current depressive episode. Additionally, we found no significant relationship between telomerase activity and exposure to recent or childhood adversity in either the patient or control groups. Overall, our results suggest that telomerase activity is not associated with depression, the therapeutic response to ECT, or exposure to adversity.
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23
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Criscuolo F, Torres R, Zahn S, Williams TD. Telomere dynamics from hatching to sexual maturity and maternal effects in the 'multivariate egg'. J Exp Biol 2020; 223:jeb232496. [PMID: 33139395 DOI: 10.1242/jeb.232496] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 10/26/2020] [Indexed: 12/13/2022]
Abstract
Avian eggs contain a large number of molecules deposited by the mother that provide the embryo with energy but also potentially influence its development via the effects of maternally derived hormones and antibodies: the avian egg is thus 'multivariate'. Multivariate effects on offspring phenotype were evaluated in a study on captive zebra finches, by simultaneously manipulating maternally derived antibodies (MAb) by lipopolysaccharide (LPS) treatment of mothers and injection of testosterone into the egg yolk. LPS treatment had a positive effect on body mass growth at 30 days after hatching and immune response at sexual maturity, while egg testosterone treatment positively influenced immune response at fledging and courtship behaviour in sexually mature male offspring. Maternal effects are known to modulate offspring telomere length (TL). However, the multivariate effects of egg-derived maternal components on offspring telomere dynamics from hatching to sexual maturity are undefined. Here, we tested: (1) the effects of LPS and testosterone treatments on TL from hatching to sexual maturity (day 82); (2) how LPS treatment modulated TL over reproduction in adult females; and (3) the relationship between maternal and offspring TL. We predicted that TL would be shorter in LPS fledglings (as a cost of faster growth) and that TL would be longer in sexually mature adults after yolk testosterone treatment (as a proxy of individual quality). In adult females, there was an overall negative relationship between laying and rearing investments and TL, this relationship was weaker in LPS-treated females. In chicks, there was an overall negative effect of LPS treatment on TL measured at fledging and sexual maturity (day 25-82). In addition, at fledging, there was a Sex×LPS×Testosterone interaction, suggesting the existence of antagonistic effects of our treatments. Our data partially support the hypothesis that telomeres are proxies of individual quality and that individual differences in TL are established very early in life.
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Affiliation(s)
- Francois Criscuolo
- University of Strasbourg, CNRS, Institut Pluridisciplinaire Hubert Curien, UMR 7178, 67000 Strasbourg, France
| | - Roxanna Torres
- Instituto de Ecologia, Universidad Nacional Autonoma de Mexico, A.P. 70-275, Mexico D.F. 04510, Mexico
| | - Sandrine Zahn
- University of Strasbourg, CNRS, Institut Pluridisciplinaire Hubert Curien, UMR 7178, 67000 Strasbourg, France
| | - Tony D Williams
- Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, Canada V5A 1S6
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Lemaître JF, Carbillet J, Rey B, Palme R, Froy H, Wilbourn RV, Underwood SL, Cheynel L, Gaillard JM, Hewison AJM, Verheyden H, Débias F, Duhayer J, Régis C, Pardonnet S, Pellerin M, Nussey DH, Gilot-Fromont E. Short-term telomere dynamics is associated with glucocorticoid levels in wild populations of roe deer. Comp Biochem Physiol A Mol Integr Physiol 2020; 252:110836. [PMID: 33144154 DOI: 10.1016/j.cbpa.2020.110836] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/27/2020] [Accepted: 10/27/2020] [Indexed: 12/23/2022]
Abstract
While evidence that telomere length is associated with health and mortality in humans and birds is accumulating, a large body of research is currently seeking to identify factors that modulate telomere dynamics. We tested the hypothesis that high levels of glucocorticoids in individuals under environmental stress should accelerate telomere shortening in two wild populations of roe deer (Capreolus capreolus) living in different ecological contexts. From two consecutive annual sampling sessions, we found that individuals with faster rates of telomere shortening had higher concentrations of fecal glucocorticoid metabolites, suggesting a functional link between glucocorticoid levels and telomere attrition rate. This relationship was consistent for both sexes and populations. This finding paves the way for further studies of the fitness consequences of exposure to environmental stressors in wild vertebrates.
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Affiliation(s)
- Jean-François Lemaître
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR5558, F-69622 Villeurbanne, France.
| | - Jeffrey Carbillet
- Université de Toulouse, INRAE, CEFS, F-31326 Castanet Tolosan, France; Université de Lyon, VetAgro Sup, Marcy-l'Etoile, France
| | - Benjamin Rey
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR5558, F-69622 Villeurbanne, France
| | - Rupert Palme
- Unit of Physiology, Pathophysiology, and Experimental Endocrinology, Department of Biomedical Sciences, University of Veterinary Medicine, 1210 Vienna, Austria
| | - Hannah Froy
- Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK; Centre for Biodiversity Dynamics, Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Rachael V Wilbourn
- Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
| | - Sarah L Underwood
- Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK
| | - Louise Cheynel
- Institute of Infection, Veterinary, and Ecological Sciences, University of Liverpool, UK
| | - Jean-Michel Gaillard
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR5558, F-69622 Villeurbanne, France
| | - A J Mark Hewison
- Université de Toulouse, INRAE, CEFS, F-31326 Castanet Tolosan, France
| | - Hélène Verheyden
- Université de Toulouse, INRAE, CEFS, F-31326 Castanet Tolosan, France
| | - François Débias
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR5558, F-69622 Villeurbanne, France
| | - Jeanne Duhayer
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR5558, F-69622 Villeurbanne, France
| | - Corinne Régis
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR5558, F-69622 Villeurbanne, France
| | - Sylvia Pardonnet
- 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
| | - Emmanuelle Gilot-Fromont
- Université de Lyon, Université Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR5558, F-69622 Villeurbanne, France; Université de Lyon, VetAgro Sup, Marcy-l'Etoile, France
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Stier A, Metcalfe NB, Monaghan P. Pace and stability of embryonic development affect telomere dynamics: an experimental study in a precocial bird model. Proc Biol Sci 2020; 287:20201378. [PMID: 32842933 DOI: 10.1098/rspb.2020.1378] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Prenatal effects on telomere length are increasingly recognized as a potential contributor to the developmental origin of health and adult disease. While it is becoming clear that telomere length is influenced by prenatal conditions, the factors affecting telomere dynamics during embryogenesis remain poorly understood. We manipulated both the pace and stability of embryonic development through varying incubation temperature and its stability in Japanese quail. We investigated the impact on telomere dynamics from embryogenesis to adulthood, together with three potential drivers of telomere shortening, growth rate, oxidative damage and prenatal glucocorticoid levels. Telomere length was not affected by our prenatal manipulation for the first 75% of embryogenesis, but was reduced at hatching in groups experiencing faster (i.e. high temperature) or less stable embryonic development. These early life differences in telomere length persisted until adulthood. The effect of developmental instability on telomere length at hatching was potentially mediated by an increased secretion of glucocorticoid hormones during development. Both the pace and the stability of embryo development appear to be key factors determining telomere length and dynamics into adulthood, with fast and less stable development leading to shorter telomeres, with the potential for adverse associated outcomes in terms of reduced longevity.
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Affiliation(s)
- Antoine Stier
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK.,Department of Biology, University of Turku, Turku, Finland
| | - Neil B Metcalfe
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
| | - Pat Monaghan
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK
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Evidence supporting the role of telomerase, MMP-9, and SIRT1 in attention-deficit/hyperactivity disorder (ADHD). J Neural Transm (Vienna) 2020; 127:1409-1418. [PMID: 32691156 DOI: 10.1007/s00702-020-02231-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 07/14/2020] [Indexed: 12/31/2022]
Abstract
Growing evidence suggests that telomeres, telomerase, matrix metalloproteinase-9 (MMP-9), and SIRT1 (sirtuin1) are involved in the pathophysiology of neuropsychiatric and neurodevelopmental disorders. However, whether these molecules are contributors to attention-deficit/hyperactivity disorder (ADHD) has been little explored and poorly understood. This study aimed to determine the potential role of telomerase, MMP-9, and SIRT1 in children with ADHD. The study was performed on 46 children with ADHD aged between 8 and 14 and 43 healthy children matching in age and gender. Children were evaluated by Kiddie-Sads-Present and Lifetime Version, Conners' Parent Rating Scale-Revised Short Form (CPRS-RS) and Stroop test. Serum telomerase, MMP-9, and SIRT1 levels were measured by a quantitative sandwich enzyme-linked immunosorbent assay. MMP-9 and telomerase levels were significantly higher and SIRT1 levels were significantly lower in patients with ADHD than those of controls. All three molecules were significantly associated with both the severity of ADHD symptoms and cognitive functions. This is the first attempt to indicate that the important role of telomerase, MMP-9, and SIRT1 in ADHD, and the association of all these molecules with the severity of ADHD and cognitive functions, but future studies are required to verify these results.
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Monteforte S, Cattelan S, Morosinotto C, Pilastro A, Grapputo A. Maternal predator-exposure affects offspring size at birth but not telomere length in a live-bearing fish. Ecol Evol 2020; 10:2030-2039. [PMID: 32128135 PMCID: PMC7042736 DOI: 10.1002/ece3.6035] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 01/01/2023] Open
Abstract
The perception of predation risk could affect prey phenotype both within and between generations (via parental effects). The response to predation risk could involve modifications in physiology, morphology, and behavior and can ultimately affect long-term fitness. Among the possible modifications mediated by the exposure to predation risk, telomere length could be a proxy for investigating the response to predation risk both within and between generations, as telomeres can be significantly affected by environmental stress. Maternal exposure to the perception of predation risk can affect a variety of offspring traits but the effect on offspring telomere length has never been experimentally tested. Using a live-bearing fish, the guppy (Poecilia reticulata), we tested if the perceived risk of predation could affect the telomere length of adult females directly and that of their offspring with a balanced experimental setup that allowed us to control for both maternal and paternal contribution. We exposed female guppies to the perception of predation risk during gestation using a combination of both visual and chemical cues and we then measured female telomere length after the exposure period. Maternal effects mediated by the exposure to predation risk were measured on offspring telomere length and body size at birth. Contrary to our predictions, we did not find a significant effect of predation-exposure neither on female nor on offspring telomere length, but females exposed to predation risk produced smaller offspring at birth. We discuss the possible explanations for our findings and advocate for further research on telomere dynamics in ectotherms.
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Affiliation(s)
| | | | - Chiara Morosinotto
- Department of BiologyUniversity of PadovaPadovaItaly
- Bioeconomy Research TeamNovia University of Applied SciencesEkenäsFinland
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Dantzer B, van Kesteren F, Westrick SE, Boutin S, McAdam AG, Lane JE, Gillespie R, Majer A, Haussmann MF, Monaghan P. Maternal glucocorticoids promote offspring growth without inducing oxidative stress or shortening telomeres in wild red squirrels. J Exp Biol 2020; 223:jeb212373. [PMID: 31796605 PMCID: PMC10668338 DOI: 10.1242/jeb.212373] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 11/26/2019] [Indexed: 12/26/2022]
Abstract
Elevations in glucocorticoid (GC) levels in breeding females may induce adaptive shifts in offspring life histories. Offspring produced by mothers with elevated GCs may be better prepared to face harsh environments, where a faster pace of life is beneficial. We examined how experimentally elevated GCs in pregnant or lactating North American red squirrels (Tamiasciurus hudsonicus) affected offspring postnatal growth, structural size and oxidative stress levels (two antioxidants and oxidative protein damage) in three different tissues (blood, heart and liver) and liver telomere lengths. We predicted that offspring from mothers treated with GCs would grow faster but would also have higher levels of oxidative stress and shorter telomeres, which may predict reduced longevity. Offspring from mothers treated with GCs during pregnancy were 8.3% lighter around birth but grew (in body mass) 17.0% faster than those from controls, whereas offspring from mothers treated with GCs during lactation grew 34.8% slower than those from controls and did not differ in body mass around birth. Treating mothers with GCs during pregnancy or lactation did not alter the oxidative stress levels or telomere lengths of their offspring. Fast-growing offspring from any of the treatment groups did not have higher oxidative stress levels or shorter telomere lengths, indicating that offspring that grew faster early in life did not exhibit oxidative costs after this period of growth. Our results indicate that elevations in maternal GCs may induce plasticity in offspring growth without long-term oxidative costs to the offspring that might result in a shortened lifespan.
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Affiliation(s)
- Ben Dantzer
- Department of Psychology, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Freya van Kesteren
- Department of Psychology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Sarah E Westrick
- Department of Psychology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Stan Boutin
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2E9
| | - Andrew G McAdam
- Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada, N1G 2W1
| | - Jeffrey E Lane
- Department of Biology, University of Saskatchewan, Saskatoon, SK, Canada, S7N 5E2
| | - Robert Gillespie
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Ariana Majer
- Department of Biology, Bucknell University, Lewisburg, PA 17837, USA
| | - Mark F Haussmann
- Department of Biology, Bucknell University, Lewisburg, PA 17837, USA
| | - Pat Monaghan
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
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Meier HCS, Hussein M, Needham B, Barber S, Lin J, Seeman T, Diez Roux A. Cellular response to chronic psychosocial stress: Ten-year longitudinal changes in telomere length in the Multi-Ethnic Study of Atherosclerosis. Psychoneuroendocrinology 2019; 107:70-81. [PMID: 31112903 PMCID: PMC6635040 DOI: 10.1016/j.psyneuen.2019.04.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 02/14/2019] [Accepted: 04/26/2019] [Indexed: 01/01/2023]
Abstract
Previous studies have demonstrated an inverse association between chronic psychosocial stress and leukocyte telomere length (LTL), a potential marker of cellular aging. However, due to paucity of longitudinal data, responses of LTL and the LTL aging trajectory to changes in chronic stress exposure remain less well understood. Using data from the Stress I and II ancillary studies of the Multi-Ethnic Study of Atherosclerosis, we estimated the 10-year longitudinal (n = 1,158) associations of within-person changes in chronic stress with changes in LTL, as well as the pooled, cross-sectional associations of chronic stress and LTL (total n = 2,231). We measured chronic stress from both individual and neighborhood-environment sources. At the individual level, we calculated a summary score of each participant's rating of their ongoing (>6 months) material/social problems as moderately/very stressful on the Chronic Burden Scale. Neighborhood-level stress was measured using a summary score of reverse-coded MESA Neighborhood safety, aesthetic quality, and social cohesion scales. Quantiles of these scores were empirically categorized as high, moderate, or low stress. We then summed these individual- and neighborhood-level categorical variables for a total stress measure. Longitudinal within-person associations were estimated with fixed-effects models, which control for all time-invariant confounding, with additional control for time-varying demographics, lagged behaviors and chronic conditions, and specimen storage duration, as well as correction for regression to the mean. Change from low to high total chronic stress was associated with telomere shortening by 0.054 units [95% confidence interval: -0.095, -0.013] over 10 years. This was consistent with, though stronger in magnitude than, cross-sectional estimates. Change in individual-level stress was the primary driver of this effect. We also found suggestive evidence that 1) individuals with persistently high stress experienced the least shortening of telomeres, and 2) changes in individual-level stress were associated with stronger telomere shortening among women, whereas changes in neighborhood stress were associated with stronger shortening among men. Our findings provide longitudinal support to existing evidence, and point to interesting dynamics in telomere attrition across stress levels and genders.
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Affiliation(s)
- Helen C S Meier
- Joseph J. Zilber School of Public Health, University of Wisconsin-Milwaukee, 1240 N. 10th St., Milwaukee, WI, 53205, USA.
| | - Mustafa Hussein
- Joseph J. Zilber School of Public Health, University of Wisconsin-Milwaukee, 1240 N. 10th St., Milwaukee, WI, 53205, USA.
| | - Belinda Needham
- Department of Epidemiology, University of Michigan School of Public Health, 1415 Washington Heights, Ann Arbor, MI, 48109, USA.
| | - Sharrelle Barber
- Department of Epidemiology and Biostatistics, and the Urban Health Collaborative, Drexel University Dornsife School of Public Health, 3215 Market St., Philadelphia, PA, 19104, USA.
| | - Jue Lin
- Department of Biochemistry and Biophysics, University of California, San Francisco, 600 16th Street, Room S312F Genentech Hall, San Francisco, CA, 94158, USA.
| | - Teresa Seeman
- Department of Medicine, Division of Geriatrics, University of California, Los Angeles, 10945 Le Conte Avenue, Suite 2339, Los Angeles, CA, 90095, USA.
| | - Ana Diez Roux
- Department of Epidemiology and Biostatistics, and the Urban Health Collaborative, Drexel University Dornsife School of Public Health, 3215 Market St., Philadelphia, PA, 19104, USA.
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Abstract
Telomeres are specialised structures at the end of linear chromosomes. They consist of tandem repeats of the hexanucleotide sequence TTAGGG, as well as a protein complex called shelterin. Together, they form a protective loop structure against chromosome fusion and degradation. Shortening or damage to telomeres and opening of the loop induce an uncapped state that triggers a DNA damage response resulting in senescence or apoptosis.Average telomere length, usually measured in human blood lymphocytes, was thought to be a biomarker for ageing, survival and mortality. However, it becomes obvious that regulation of telomere length is very complex and involves multiple processes. For example, the "end replication problem" during DNA replication as well as oxidative stress are responsible for the shortening of telomeres. In contrast, telomerase activity can potentially counteract telomere shortening when it is able to access and interact with telomeres. However, while highly active during development and in cancer cells, the enzyme is down-regulated in most human somatic cells with a few exceptions such as human lymphocytes. In addition, telomeres can be transcribed, and the transcription products called TERRA are involved in telomere length regulation.Thus, telomere length and their integrity are regulated at many different levels, and we only start to understand this process under conditions of increased oxidative stress, inflammation and during diseases as well as the ageing process.This chapter aims to describe our current state of knowledge on telomeres and telomerase and their regulation in order to better understand their role for the ageing process.
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de Punder K, Heim C, Wadhwa PD, Entringer S. Stress and immunosenescence: The role of telomerase. Psychoneuroendocrinology 2019; 101:87-100. [PMID: 30445409 PMCID: PMC6458519 DOI: 10.1016/j.psyneuen.2018.10.019] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/27/2018] [Accepted: 10/22/2018] [Indexed: 01/04/2023]
Abstract
Chronic stress is associated with the accelerated aging of the immune system and represents a potent risk factor for the development and progression of a wide range of physical and mental disorders. The elucidation of molecular pathways and mechanisms underlying the link between stress and cellular aging is an area of considerable interest and investigation. In this context, telomere biology has emerged as a particularly attractive candidate mechanism. Several studies have linked immune cell telomere length with stress-related conditions and states, and also with several physical and mental disorders. Because the cellular reverse transcriptase enzyme telomerase is the primary regulator of telomere length (by adding telomeric DNA to telomeres and thereby attenuating telomere shortening), the understanding of its regulation and regulatory functions constitutes a prime target for developing strategies to prevent, attenuate or reverse the adverse consequences of immune system aging (immunosenescence). In this review we provide an overview of the mechanistic pathways linking telomerase with stress and cellular aging, with an emphasis on the immune system. We summarize and synthesize the current state of the literature on immune cell telomerase in different stress- and aging-related disease states and provide recommendations for future research directions.
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Affiliation(s)
- Karin de Punder
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institute of Medical Psychology, Berlin, Germany.
| | - Christine Heim
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institute of Medical Psychology, Berlin, Germany; Department of Biobehavioral Health, College of Health and Human Development, Pennsylvania State University, USA
| | - Pathik D Wadhwa
- Department of Psychiatry & Human Behavior, University of California, Irvine, School of Medicine, Irvine, CA, USA; Department of Obstetrics & Gynecology, University of California, Irvine, School of Medicine, Irvine, CA, USA; Department of Pediatrics, University of California, Irvine, School of Medicine, Irvine, CA, USA; Department of Epidemiology, University of California, Irvine, School of Medicine, Irvine, CA, USA
| | - Sonja Entringer
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institute of Medical Psychology, Berlin, Germany; Department of Pediatrics, University of California, Irvine, School of Medicine, Irvine, CA, USA; Development, Health and Disease Research Program, University of California, Irvine, School of Medicine, Irvine, CA, USA
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32
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Depression caused by long-term stress regulates premature aging and is possibly associated with disruption of circadian rhythms in mice. Physiol Behav 2019; 199:100-110. [DOI: 10.1016/j.physbeh.2018.11.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 11/09/2018] [Accepted: 11/10/2018] [Indexed: 12/21/2022]
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Exposure to environmental radionuclides associates with tissue-specific impacts on telomerase expression and telomere length. Sci Rep 2019; 9:850. [PMID: 30696885 PMCID: PMC6351625 DOI: 10.1038/s41598-018-37164-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 12/04/2018] [Indexed: 11/08/2022] Open
Abstract
Telomeres, the protective structures at the ends of chromosomes, can be shortened when individuals are exposed to stress. In some species, the enzyme telomerase is expressed in adult somatic tissues, and potentially protects or lengthens telomeres. Telomeres can be damaged by ionizing radiation and oxidative stress, although the effect of chronic exposure to elevated levels of radiation on telomere maintenance is unknown for natural populations. We quantified telomerase expression and telomere length (TL) in different tissues of the bank vole Myodes glareolus, collected from the Chernobyl Exclusion Zone, an environment heterogeneously contaminated with radionuclides, and from uncontaminated control sites elsewhere in Ukraine. Inhabiting the Chernobyl Exclusion Zone was associated with reduced TL in the liver and testis, and upregulation of telomerase in brain and liver. Thus upregulation of telomerase does not appear to associate with longer telomeres but may reflect protective functions other than telomere maintenance or an attempt to maintain shorter telomeres in a stressful environment. Tissue specific differences in the rate of telomere attrition and apparent radiosensitivity weaken the intra-individual correlation in telomere length among tissues in voles exposed to radionuclides. Our data show that ionizing radiation alters telomere homeostasis in wild animal populations in tissue specific ways.
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Verhoeven JE, Yang R, Wolkowitz OM, Bersani FS, Lindqvist D, Mellon SH, Yehuda R, Flory JD, Lin J, Abu-Amara D, Makotkine I, Marmar C, Jett M, Hammamieh R. Epigenetic Age in Male Combat-Exposed War Veterans: Associations with Posttraumatic Stress Disorder Status. MOLECULAR NEUROPSYCHIATRY 2018; 4:90-99. [PMID: 30397597 PMCID: PMC6206951 DOI: 10.1159/000491431] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 05/30/2018] [Indexed: 12/27/2022]
Abstract
DNA methylation patterns change with age and can be used to derive an estimate of "epigenetic age," an indicator of biological age. Several studies have shown associations of posttraumatic stress disorder (PTSD) with worse somatic health and early mortality, raising the possibility of accelerated biological aging. This study examined associations between estimated epigenetic age and various variables in 160 male combat-exposed war veterans with (n = 79) and without PTSD (n = 81). DNA methylation was assessed in leukocyte genomic DNA using the Illumina 450K DNA methylation arrays. Epigenetic age was estimated using Horvath's epigenetic clock algorithm and Δage (epigenetic age-chronological age) was calculated. In veterans with PTSD (Δage = 3.2), Δage was on average lower compared to those without PTSD (Δage = 5.0; p = 0.02; Cohen's d = 0.42). This between-group difference was not explained by race/ethnicity, lifestyle factors or childhood trauma. Antidepressant use, however, explained part of the association. In the PTSD positive group, telomerase activity was negatively related to Δage (β = -0.35; p = 0.007). In conclusion, veterans with PTSD had significantly lower epigenetic age profiles than those without PTSD. Further, current antidepressant use and higher telomerase activity were related to relatively less epigenetic aging in veterans with PTSD, speculative of a mechanistic pathway that might attenuate biological aging-related processes in the context of PTSD.
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Affiliation(s)
- Josine E. Verhoeven
- Department of Psychiatry, UCSF Weill Institute for Neuroscience, University of California San Francisco, School of Medicine, San Francisco, California, USA
- Department of Psychiatry, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Ruoting Yang
- D, Frederick National Laboratory for Cancer Research, Frederick, Maryland, USA
- Integrative Systems Biology, U.S. Army Center for Environmental Health Research, Fort Detrick, Maryland, USA
| | - Owen M. Wolkowitz
- Department of Psychiatry, UCSF Weill Institute for Neuroscience, University of California San Francisco, School of Medicine, San Francisco, California, USA
| | - Francesco S. Bersani
- Department of Psychiatry, UCSF Weill Institute for Neuroscience, University of California San Francisco, School of Medicine, San Francisco, California, USA
- Department of Neurology and Psychiatry, Sapienza University of Rome, Rome, Italy
| | - Daniel Lindqvist
- Department of Psychiatry, UCSF Weill Institute for Neuroscience, University of California San Francisco, School of Medicine, San Francisco, California, USA
- Department of Clinical Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - Synthia H. Mellon
- Department of OB/GYN and Reproductive Sciences, University of California San Francisco, School of Medicine, San Francisco, California, USA
| | - Rachel Yehuda
- James J. Peters Veterans Administration Medical Center Bronx, New York, New York, USA
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Janine D. Flory
- James J. Peters Veterans Administration Medical Center Bronx, New York, New York, USA
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jue Lin
- Department of Biochemistry and Biophysics, University of California San Francisco, School of Medicine, San Francisco, California, USA
| | - Duna Abu-Amara
- Steven and Alexandra Cohen Veterans Center for Posttraumatic Stress and Traumatic Brain Injury, New York, New York, USA
- Department of Psychiatry, New York University, New York, New York, USA
| | - Iouri Makotkine
- James J. Peters Veterans Administration Medical Center Bronx, New York, New York, USA
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Charles Marmar
- Steven and Alexandra Cohen Veterans Center for Posttraumatic Stress and Traumatic Brain Injury, New York, New York, USA
- Department of Psychiatry, New York University, New York, New York, USA
| | - Marti Jett
- Integrative Systems Biology, U.S. Army Center for Environmental Health Research, Fort Detrick, Maryland, USA
| | - Rasha Hammamieh
- Integrative Systems Biology, U.S. Army Center for Environmental Health Research, Fort Detrick, Maryland, USA
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Monaghan P, Ozanne SE. Somatic growth and telomere dynamics in vertebrates: relationships, mechanisms and consequences. Philos Trans R Soc Lond B Biol Sci 2018; 373:20160446. [PMID: 29335370 PMCID: PMC5784066 DOI: 10.1098/rstb.2016.0446] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/03/2017] [Indexed: 01/11/2023] Open
Abstract
Much telomere loss takes place during the period of most rapid growth when cell proliferation and potentially energy expenditure are high. Fast growth is linked to reduced longevity. Therefore, the effects of somatic cell proliferation on telomere loss and cell senescence might play a significant role in driving the growth-lifespan trade-off. While different species will have evolved a growth strategy that maximizes lifetime fitness, environmental conditions encountered during periods of growth will influence individual optima. In this review, we first discuss the routes by which altered cellular conditions could influence telomere loss in vertebrates, with a focus on oxidative stress in both in vitro and in vivo studies. We discuss the relationship between body growth and telomere length, and evaluate the empirical evidence that this relationship is generally negative. We further discuss the potentially conflicting hypotheses that arise when other factors are taken into account, and the further work that needs to be undertaken to disentangle confounding variables.This article is part of the theme issue 'Understanding diversity in telomere dynamics'.
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Affiliation(s)
- Pat Monaghan
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Graham Kerr Building, Glasgow G12 8QQ, UK
| | - Susan E Ozanne
- Wellcome Trust-MRC Institute of Metabolic Science, University of Cambridge Metabolic Research Laboratories, Level 4, Box 289, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK
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Epel ES, Prather AA. Stress, Telomeres, and Psychopathology: Toward a Deeper Understanding of a Triad of Early Aging. Annu Rev Clin Psychol 2018; 14:371-397. [PMID: 29494257 DOI: 10.1146/annurev-clinpsy-032816-045054] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Telomeres play an important part in aging and show relationships to lifetime adversity, particularly childhood adversity. Meta-analyses demonstrate reliable associations between psychopathology (primarily depression) and shorter telomere length, but the nature of this relationship has not been fully understood. Here, we review and evaluate the evidence for impaired telomere biology as a consequence of psychopathology or as a contributing factor, and the important mediating roles of chronic psychological stress and impaired allostasis. There is evidence for a triadic relationship among stress, telomere shortening, and psychiatric disorders that is positively reinforcing and unfolds across the life course and, possibly, across generations. We review the role of genetics and biobehavioral responses that may contribute to shorter telomere length, as well as the neurobiological impact of impaired levels of telomerase. These complex interrelationships are important to elucidate because they have implications for mental and physical comorbidity and, potentially, for the prevention and treatment of depression.
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Affiliation(s)
| | - Aric A Prather
- Department of Psychiatry; Center for Health and Community; Aging, Metabolism, and Emotions Center; University of California, San Francisco, California 94118, USA; ,
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Polonis K, Somers VK, Becari C, Covassin N, Schulte PJ, Druliner BR, Johnson RA, Narkiewicz K, Boardman LA, Singh P. Moderate-to-severe obstructive sleep apnea is associated with telomere lengthening. Am J Physiol Heart Circ Physiol 2017; 313:H1022-H1030. [PMID: 28822964 PMCID: PMC5792204 DOI: 10.1152/ajpheart.00197.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 07/27/2017] [Accepted: 08/10/2017] [Indexed: 12/15/2022]
Abstract
Obstructive sleep apnea (OSA) is associated with cardiometabolic diseases. Telomere shortening is linked to hypertension, diabetes mellitus, and cardiovascular diseases. Because these conditions are highly prevalent in OSA, we hypothesized that telomere length (TL) would be reduced in OSA patients. We identified 106 OSA and 104 non-OSA subjects who underwent polysomnography evaluation. Quantitative PCR was used to measure telomere length in genomic DNA isolated from peripheral blood samples. The association between OSA and TL was determined using unadjusted and adjusted linear models. There was no difference in TL between the OSA and non-OSA (control) group. However, we observed a J-shaped relationship between TL and OSA severity: the longest TL in moderate-to-severe OSA [4,918 ± 230 (SD) bp] and the shortest TL in mild OSA (4,735 ± 145 bp). Mean TL in moderate-to-severe OSA was significantly longer than in the control group after adjustment for age, sex, body mass index, hypertension, dyslipidemia, and depression (β = 96.0, 95% confidence interval: 15.4-176.6, P = 0.020). In conclusion, moderate-to-severe OSA is associated with telomere lengthening. Our findings support the idea that changes in TL are not unidirectional processes, such that telomere shortening occurs with age and disease but may be prolonged in moderate-to-severe OSA.NEW & NOTEWORTHY Here, we show that moderate-to-severe obstructive sleep apnea is associated with longer telomeres, independent of age and cardiovascular risk factors, challenging the hypothesis that telomere shortening is a unidirectional process related to age/disease. A better understanding of the mechanisms underlying telomere dynamics may identify targets for therapeutic intervention in cardiovascular aging/other chronic diseases.
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Affiliation(s)
- Katarzyna Polonis
- 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota; ,4Department of Hypertension and Diabetology, Medical University of Gdansk, Gdansk, Poland
| | - Virend K. Somers
- 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota;
| | - Christiane Becari
- 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota;
| | - Naima Covassin
- 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota;
| | - Phillip J. Schulte
- 2Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota;
| | - Brooke R. Druliner
- 3Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota; and
| | - Ruth A. Johnson
- 3Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota; and
| | - Krzysztof Narkiewicz
- 4Department of Hypertension and Diabetology, Medical University of Gdansk, Gdansk, Poland
| | - Lisa A. Boardman
- 3Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota; and
| | - Prachi Singh
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota;
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Olsson M, Wapstra E, Friesen CR. Evolutionary ecology of telomeres: a review. Ann N Y Acad Sci 2017; 1422:5-28. [DOI: 10.1111/nyas.13443] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 06/30/2017] [Accepted: 07/06/2017] [Indexed: 12/26/2022]
Affiliation(s)
- Mats Olsson
- Department of Biological and Environmental Sciences University of Gothenburg Gothenburg Sweden
- School of Biological Sciences The University of Wollongong Wollongong New South Wales Australia
| | - Erik Wapstra
- School of Biological Sciences University of Tasmania Hobart Tasmania Australia
| | - Christopher R. Friesen
- School of Life and Environmental Sciences University of Sydney Sydney New South Wales Australia
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Desipramine rescues age-related phenotypes in depression-like rats induced by chronic mild stress. Life Sci 2017; 188:96-100. [PMID: 28842312 DOI: 10.1016/j.lfs.2017.08.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/12/2017] [Accepted: 08/20/2017] [Indexed: 01/21/2023]
Abstract
AIMS Our previous finding demonstrates that major depressive disorder can mediate accelerated aging in rats. Desipramine is a typical tricyclic antidepressant, and can provide neuroprotection and counteract depression-like behaviors. However, whether desipramine can rescue age-related phenotypes in depressed individuals is not understood. In the present study, we investigated the physiological function of desipramine on rescuing the age-related phenotypes in these animals. MAIN METHODS The rats were induced by chronic mild stress paradigm, and the depression-like behaviors of rats were detected by sucrose intake test, open field test (OFT) and forced swimming test (FST). Then the depressed rats were treated by desipramine. KEY FINDINGS Desipramine administration was effective in counteracting depression-like behaviors by increasing the sucrose solution intake, reducing the immobility time in the FST, and increasing total distance travelled and numbers of grid line crossed in the OFT. Moreover, desipramine treatment was able to reduce the oxidative damage to rat liver, and to increase the expression of telomerase reverse transcriptase (TERT), leading to correspondingly restored telomerase activity. SIGNIFICANCE Our findings identify that one function of desipramine may partly be to rescue age-related phenotypes in depressed individuals induced by chronic stress.
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McMichael L, Edson D, Smith C, Mayer D, Smith I, Kopp S, Meers J, Field H. Physiological stress and Hendra virus in flying-foxes (Pteropus spp.), Australia. PLoS One 2017; 12:e0182171. [PMID: 28767708 PMCID: PMC5540484 DOI: 10.1371/journal.pone.0182171] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 07/13/2017] [Indexed: 11/19/2022] Open
Abstract
Pteropid bats (flying-foxes) are the natural reservoir of Hendra virus, an emergent paramyxovirus responsible for fatal infection in horses and humans in Australia. Pteropus alecto (the Black flying-fox) and the paraphyletic P. conspicillatus (the Spectacled flying-fox) appear to be the primary reservoir hosts. Previous studies have suggested that physiological and ecological factors may underpin infection dynamics in flying-foxes, and subsequent spillover to horses and in turn humans. We sought to examine temporal trends in urinary cortisol concentration in wild Australian flying-fox populations, to elucidate the putative relationship between Hendra virus infection and physiological stress. Pooled and individual urine samples were non-invasively collected from under roosting flying-foxes at two latitudinally disparate regions in the eastern Australian state of Queensland. Hendra virus detection, and (in individual urine samples) sex and species determination were PCR-based. Urinary cortisol measurement used a validated enzyme immunoassay. We found no direct correlation between increased urinary cortisol and Hendra virus excretion, but our findings do suggest a biologically plausible association between low winter temperatures and elevated cortisol levels in P. alecto in the lower latitude Southeast Queensland roosts. We hypothesize an indirect association between low winter temperatures and increased Hendra virus infection and excretion, mediated by the physiological cost of thermoregulation. Our findings and our approach are directly relevant to elaboration of the disease ecology of Nipah virus and other emerging henipaviruses in bats. More broadly, they inform investigation of emerging disease infection dynamics across the wildlife/livestock/human interface.
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Affiliation(s)
- Lee McMichael
- University of Queensland, School of Veterinary Science, Gatton, Queensland, Australia
- Biosecurity Queensland, Department of Agriculture and Fisheries, Brisbane, Queensland, Australia
- * E-mail:
| | - Daniel Edson
- Biosecurity Queensland, Department of Agriculture and Fisheries, Brisbane, Queensland, Australia
- Department of Agriculture and Water Resources, Canberra, Australian Capital Territory, Australia
| | - Craig Smith
- Biosecurity Queensland, Department of Agriculture and Fisheries, Brisbane, Queensland, Australia
| | - David Mayer
- Department of Agriculture and Fisheries, Brisbane, Queensland, Australia
| | - Ina Smith
- Australian Animal Health Laboratory, Geelong, Victoria, Australia
| | - Steven Kopp
- University of Queensland, School of Veterinary Science, Gatton, Queensland, Australia
| | - Joanne Meers
- University of Queensland, School of Veterinary Science, Gatton, Queensland, Australia
| | - Hume Field
- EcoHealth Alliance, New York, New York, United States of America
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Solomon Z, Tsur N, Levin Y, Uziel O, Lahav M, Ohry A. The implications of war captivity and long-term psychopathology trajectories for telomere length. Psychoneuroendocrinology 2017; 81:122-128. [PMID: 28448821 DOI: 10.1016/j.psyneuen.2017.04.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 04/07/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND Previous findings have demonstrated the link between trauma, its psychopathological aftermath and cellular aging, as reflected in telomere length. However, as long-term examinations of psychopathology following trauma are scarce, very little is known regarding the repercussions of depression and PTSD trajectories of psychopathology for telomeres. The current study examined the implications of war captivity and depression/PTSD trajectories on telomere length. METHODS Ninety-nine former prisoners of war (ex-POWs) from the 1973 Yom Kippur War were evaluated for depression and PTSD at 18, 30, 35 and 42 years after the war. Data on leukocyte telomere length of ex-POWs and 79 controls was collected 42 years after the war. RESULTS Ex-POWs had shorter telomeres compared to controls (Cohen's d=.5 indicating intermediate effect). Ex-POWs with chronic depression had shorter telomeres compared to those with delayed onset of depression (Cohen's d=4.89), and resilient ex-POWs (Cohen's d= 3.87), indicating high effect sizes. PTSD trajectories were not implicated in telomere length (Partial eta2=.16 and p=.11). CONCLUSION The findings suggest that the detrimental ramifications of war captivity are extensive, involving premature cellular senesces. These findings further point to the wear-and-tear effect of long-term depression, but not PTSD, on telomere length. Explanations for the findings are discussed.
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Affiliation(s)
- Zahava Solomon
- I-Core Research Center for Mass Trauma, Tel-Aviv University, Israel; Bob Shapell School of Social Work, Tel Aviv University, Tel Aviv, Israel
| | - Noga Tsur
- I-Core Research Center for Mass Trauma, Tel-Aviv University, Israel; Bob Shapell School of Social Work, Tel Aviv University, Tel Aviv, Israel.
| | - Yafit Levin
- Bob Shapell School of Social Work, Tel Aviv University, Tel Aviv, Israel
| | - Orit Uziel
- The Felsenstein Medical Research Center, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel
| | - Meir Lahav
- The Felsenstein Medical Research Center, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel; Institute of Hematology, Davidoff Cancer Center, Rabin Medical Center, Petah Tikva, Israel
| | - Avi Ohry
- Sackler School of Medicine, Tel-Aviv University, Tel Aviv, Israel
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Xie X, Chen Y, Ma L, Shen Q, Huang L, Zhao B, Wu T, Fu Z. Major depressive disorder mediates accelerated aging in rats subjected to chronic mild stress. Behav Brain Res 2017; 329:96-103. [DOI: 10.1016/j.bbr.2017.04.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 04/08/2017] [Accepted: 04/11/2017] [Indexed: 01/12/2023]
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Sibille KT, Chen H, Bartley EJ, Riley J, Glover TL, King CD, Zhang H, Cruz-Almeida Y, Goodin BR, Sotolongo A, Petrov ME, Herbert M, Bulls HW, Edberg JC, Staud R, Redden D, Bradley LA, Fillingim RB. Accelerated aging in adults with knee osteoarthritis pain: consideration for frequency, intensity, time, and total pain sites. Pain Rep 2017; 2:e591. [PMID: 29392207 PMCID: PMC5741297 DOI: 10.1097/pr9.0000000000000591] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 01/23/2017] [Accepted: 02/23/2017] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION Individuals with osteoarthritis (OA) show increased morbidity and mortality. Telomere length, a measure of cellular aging, predicts increased morbidity and mortality. Telomeres shorten with persisting biological and psychosocial stress. Living with chronic OA pain is stressful. Previous research exploring telomere length in people with OA has produced inconsistent results. Considering pain severity may clarify the relationship between OA and telomeres. OBJECTIVES We hypothesized that individuals with high OA chronic pain severity would have shorter telomeres than those with no or low chronic pain severity. METHODS One hundred thirty-six adults, ages 45 to 85 years old, with and without symptomatic knee OA were included in the analysis. Peripheral blood leukocyte telomere length was measured, and demographic, clinical, and functional data were collected. Participants were categorized into 5 pain severity groups based on an additive index of frequency, intensity, time or duration, and total number of pain sites (FITT). Covariates included age, sex, race or ethnicity, study site, and knee pain status. RESULTS The no or low chronic pain severity group had significantly longer telomeres compared with the high pain severity group, P = 0.025. A significant chronic pain severity dose response emerged for telomere length, P = 0.034. The FITT chronic pain severity index was highly correlated with the clinical and functional OA pain measures. However, individual clinical and functional measures were not associated with telomere length. CONCLUSION Results demonstrate accelerated cellular aging with high knee OA chronic pain severity and provide evidence for the potential utility of the FITT chronic pain severity index in capturing the biological burden of chronic pain.
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Affiliation(s)
- Kimberly T. Sibille
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
| | - Huaihou Chen
- Department of Biostatistics, University of Florida, Gainesville, FL, USA
| | - Emily J. Bartley
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
| | - Joseph Riley
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
| | - Toni L. Glover
- Department of Biobehavioral Nursing Science, College of Nursing, University of Florida, Gainesville, FL, USA
| | - Christopher D. King
- Department of Anesthesia, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Hang Zhang
- Department of Biostatistics, University of Florida, Gainesville, FL, USA
| | - Yenisel Cruz-Almeida
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
| | - Burel R. Goodin
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Adriana Sotolongo
- Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Megan E. Petrov
- College of Nursing and Health Innovation, Arizona State University, Phoenix, AZ, USA
| | - Matthew Herbert
- Center of Excellence for Stress and Mental Health (CESAMH), VA San Diego Healthcare System and University of California, San Diego, CA, USA
| | - Hailey W. Bulls
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jeffrey C. Edberg
- Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Roland Staud
- Department of Medicine, University of Florida, Gainesville, FL, USA
| | - David Redden
- Biostatistics Department, School of Public Health University of Alabama at Birmingham, Birmingham, AL, USA
| | - Laurence A. Bradley
- Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Roger B. Fillingim
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
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Ouyang JQ, Lendvai ÁZ, Moore IT, Bonier F, Haussmann MF. Do Hormones, Telomere Lengths, and Oxidative Stress form an Integrated Phenotype? A Case Study in Free-Living Tree Swallows. Integr Comp Biol 2016; 56:138-45. [PMID: 27252220 DOI: 10.1093/icb/icw044] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Synopsis All organisms must anticipate and balance energetic demands and available resources in order to maximize fitness. As hormones coordinate many interactions between an organism's internal condition and the external environment, they may be key in mediating the allocation of resources to meet these demands. However, given that individuals differ considerably in how they react to changes in energetic demand, we asked whether variations in endocrine traits also correspond with life history variation. We tested whether natural variation in glucocorticoid hormone levels, oxidative stress measurements, and condition related to reproductive effort in a free-living songbird, the tree swallow, Tachycineta bicolor We then tested whether any of these traits predicted the probability of a particular individual's return to the local population in the following two years, an indicator of survival in this philopatric species. We found that males and females with longer telomeres had lighter nestlings. Moreover, individuals with lower plasma antioxidant capacity and higher reactive oxygen metabolites (i.e., greater oxidative stress) were less likely to return to the population. However, none of these traits were related to glucocorticoid levels. Our findings suggest a trade-off between reproduction and survival, with individuals with shorter telomeres having heavier nestlings but potentially paying a cost in terms of higher oxidative stress and lower survival. Interestingly, the evidence of this trade-off was unrelated to natural variation in glucocorticoids.
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Affiliation(s)
- J Q Ouyang
- *Department of Biology, University of Nevada Reno, 1664 N Virginia St, Reno, NV 89557, USA Department of Biological Sciences, Virginia Tech, 1405 Perry Street, Derring Hall, VA 24061, USA
| | - Á Z Lendvai
- Department of Biological Sciences, Virginia Tech, 1405 Perry Street, Derring Hall, VA 24061, USA Department of Evolutionary Zoology and Human Biology, University of Debrecen, Egyetem tér 1, Debrecen, 4032, Hungary
| | - I T Moore
- Department of Biological Sciences, Virginia Tech, 1405 Perry Street, Derring Hall, VA 24061, USA
| | - F Bonier
- Department of Biological Sciences, Virginia Tech, 1405 Perry Street, Derring Hall, VA 24061, USA Department of Biology, Queen's University, Biosciences Complex, Kingston, Ontario K7L3N6, Canada
| | - M F Haussmann
- Department of Biology, Bucknell University, 209 B, Lewisburg, PA 570-577-1310, USA
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Carravieri A, Müller MS, Yoda K, Hayama SI, Yamamoto M. Dominant Parasympathetic Modulation of Heart Rate and Heart Rate Variability in a Wild-Caught Seabird. Physiol Biochem Zool 2016; 89:263-76. [PMID: 27327178 DOI: 10.1086/686894] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Heart rate (HR) and heart rate variability (HRV) provide noninvasive measures of the relative activity of the parasympathetic nervous system (PNS), which promotes self-maintenance and restoration, and the sympathetic nervous system (SNS), which prepares an animal for danger. The PNS decreases HR, whereas the SNS increases HR. The PNS and SNS also contribute to oscillations in heartbeat intervals at different frequencies, producing HRV. HRV promotes resilience and adjustment capacity in the organism to intrinsic and extrinsic changes. Measuring HRV can reveal the condition and emotional state of animals, including aspects of their stress physiology. Until now, the functioning of the PNS and SNS and their relationship with other physiological systems have been studied almost exclusively in humans. In this study, we tested their influence on HR and HRV for the first time in a wild-caught seabird, the streaked shearwater (Calonectris leucomelas). We analyzed electrocardiograms collected from birds carrying externally attached HR loggers and that received injections that pharmacologically blocked the PNS, the SNS, or both, as well as those that received a saline (sham) injection or no injection (control). The PNS strongly dominated modulation of HR and also HRV across all frequencies, whereas the SNS contributed only slightly to low-frequency oscillations. The saline injection itself acted as a stressor, causing a dramatic drop in PNS activity in HRV and an increase in HR, though PNS activity continued to dominate even during acute stress. Dominant PNS activity is expected for long-lived species, which should employ physiological strategies that minimize somatic deterioration coming from stress.
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Spivak IM, Mikhelson VM, Spivak DL. Telomere length, telomerase activity, stress, and aging. ADVANCES IN GERONTOLOGY 2016. [DOI: 10.1134/s2079057016010136] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Beery AK, McEwen LM, MacIsaac JL, Francis DD, Kobor MS. Natural variation in maternal care and cross-tissue patterns of oxytocin receptor gene methylation in rats. Horm Behav 2016; 77:42-52. [PMID: 26122287 PMCID: PMC4691570 DOI: 10.1016/j.yhbeh.2015.05.022] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 05/16/2015] [Accepted: 05/27/2015] [Indexed: 12/27/2022]
Abstract
This article is part of a Special Issue "Parental Care". Since the first report of maternal care effects on DNA methylation in rats, epigenetic modifications of the genome in response to life experience have become the subject of intense focus across many disciplines. Oxytocin receptor expression varies in response to early experience, and both oxytocin signaling and methylation status of the oxytocin receptor gene (Oxtr) in blood have been related to disordered social behavior. It is unknown whether Oxtr DNA methylation varies in response to early life experience, and whether currently employed peripheral measures of Oxtr methylation reflect variation in the brain. We examined the effects of early life rearing experience via natural variation in maternal licking and grooming during the first week of life on behavior, physiology, gene expression, and epigenetic regulation of Oxtr across blood and brain tissues (mononucleocytes, hippocampus, striatum, and hypothalamus). Rats reared by "high" licking-grooming (HL) and "low" licking-grooming (LL) rat dams exhibited differences across study outcomes: LL offspring were more active in behavioral arenas, exhibited lower body mass in adulthood, and showed reduced corticosterone responsivity to a stressor. Oxtr DNA methylation was significantly lower at multiple CpGs in the blood of LL versus HL males, but no differences were found in the brain. Across groups, Oxtr transcript levels in the hypothalamus were associated with reduced corticosterone secretion in response to stress, congruent with the role of oxytocin signaling in this region. Methylation of specific CpGs at a high or low level was consistent across tissues, especially within the brain. However, individual variation in DNA methylation relative to these global patterns was not consistent across tissues. These results suggest that blood Oxtr DNA methylation may reflect early experience of maternal care, and that Oxtr methylation across tissues is highly concordant for specific CpGs, but that inferences across tissues are not supported for individual variation in Oxtr methylation.
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Affiliation(s)
- Annaliese K Beery
- Department of Psychology, Neuroscience Program, Smith College, Northampton, MA, USA; Robert Wood Johnson Health and Society Scholars Program, University of California, Berkeley and San Francisco, CA, USA.
| | - Lisa M McEwen
- Centre for Molecular Medicine and Therapeutics, Department of Medical Genetics, and Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Julia L MacIsaac
- Centre for Molecular Medicine and Therapeutics, Department of Medical Genetics, and Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Darlene D Francis
- Robert Wood Johnson Health and Society Scholars Program, University of California, Berkeley and San Francisco, CA, USA; School of Public Health, University of California, Berkeley, CA, USA
| | - Michael S Kobor
- Centre for Molecular Medicine and Therapeutics, Department of Medical Genetics, and Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada
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Haussmann MF, Heidinger BJ. Telomere dynamics may link stress exposure and ageing across generations. Biol Lett 2015; 11:20150396. [PMID: 26538535 PMCID: PMC4685533 DOI: 10.1098/rsbl.2015.0396] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 08/24/2015] [Indexed: 01/26/2023] Open
Abstract
Although exposure to stressors is known to increase disease susceptibility and accelerate ageing, evidence is accumulating that these effects can span more than one generation. Stressors experienced by parents have been reported to negatively influence the longevity of their offspring and even grand offspring. The mechanisms underlying these long-term, cross-generational effects are still poorly understood, but we argue here that telomere dynamics are likely to play an important role. In this review, we begin by surveying the current connections between stress and telomere dynamics. We then lay out the evidence that exposure to stressors in the parental generation influences telomere dynamics in offspring and potentially subsequent generations. We focus on evidence in mammalian and avian studies and highlight several promising areas where our understanding is incomplete and future investigations are critically needed. Understanding the mechanisms that link stress exposure across generations requires interdisciplinary studies and is essential to both the biomedical community seeking to understand how early adversity impacts health span and evolutionary ecologists interested in how changing environmental conditions are likely to influence age-structured population dynamics.
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Affiliation(s)
- Mark F Haussmann
- Department of Biology, Bucknell University, Lewisburg, PA 17837, USA
| | - Britt J Heidinger
- Biological Sciences Department, North Dakota State University, Stevens Hall, Fargo, ND 58108, USA
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van Ockenburg SL, Bos EH, de Jonge P, van der Harst P, Gans ROB, Rosmalen JGM. Stressful life events and leukocyte telomere attrition in adulthood: a prospective population-based cohort study. Psychol Med 2015; 45:2975-2984. [PMID: 26219269 DOI: 10.1017/s0033291715000914] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Telomere attrition might be one of the mechanisms through which psychosocial stress leads to somatic disease. To date it is unknown if exposure to adverse life events in adulthood is associated with telomere shortening prospectively. In the current study we investigated whether life events are associated with shortening of telomere length (TL). METHOD Participants were 1094 adults (mean age 53.1, range 33-79 years) from the PREVEND cohort. Data were collected at baseline (T1) and at two follow-up visits after 4 years (T2) and 6 years (T3). Life events were assessed with an adjusted version of the List of Threatening Events (LTE). TL was measured by monochrome multiplex quantitative PCR at T1, T2, and T3. A linear mixed model was used to assess the effect of recent life events on TL prospectively. Multivariable regression analyses were performed to assess whether the lifetime life events score or the score of life events experienced before the age of 12 predicted TL cross-sectionally. All final models were adjusted for age, sex, body mass index, presence of chronic diseases, frequency of sports, smoking status, and level of education. RESULTS Recent life events significantly predicted telomere attrition prospectively (B = -0.031, p = 0.007). We were not able to demonstrate a significant cross-sectional relationship between the lifetime LTE score and TL. Nor did we find exposure to adverse life events before the age of 12 to be associated with TL in adulthood. CONCLUSIONS Exposure to recent adverse life events in adulthood is associated with telomere attrition prospectively.
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Affiliation(s)
- S L van Ockenburg
- Interdisciplinary Center Psychopathology and Emotion regulation,University of Groningen,University Medical Center Groningen,The Netherlands
| | - E H Bos
- Interdisciplinary Center Psychopathology and Emotion regulation,University of Groningen,University Medical Center Groningen,The Netherlands
| | - P de Jonge
- Interdisciplinary Center Psychopathology and Emotion regulation,University of Groningen,University Medical Center Groningen,The Netherlands
| | - P van der Harst
- Department of Cardiology,University of Groningen,University Medical Center Groningen,The Netherlands
| | - R O B Gans
- Department of Internal Medicine,University of Groningen,University Medical Center Groningen,The Netherlands
| | - J G M Rosmalen
- Interdisciplinary Center Psychopathology and Emotion regulation,University of Groningen,University Medical Center Groningen,The Netherlands
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Grosbellet E, Zahn S, Arrivé M, Dumont S, Gourmelen S, Pévet P, Challet E, Criscuolo F. Circadian desynchronization triggers premature cellular aging in a diurnal rodent. FASEB J 2015; 29:4794-803. [PMID: 26260033 DOI: 10.1096/fj.14-266817] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 07/27/2015] [Indexed: 12/16/2022]
Abstract
Chronic jet lag or shift work is deleterious to human metabolic health, in that such circadian desynchronization is associated with being overweight and the prevalence of altered glucose metabolism. Similar metabolic changes are observed with age, suggesting that chronic jet lag and accelerated cell aging are intimately related, but the association remains to be determined. We addressed whether jet lag induces metabolic and cell aging impairments in young grass rats (2-3 mo old), using control old grass rats (12-18 mo old) as an aging reference. Desynchronized young and control old subjects had impaired glucose tolerance (+60 and +280%) when compared with control young animals. Despite no significant variation in liver DNA damage, shorter telomeres were characterized, not only in old animal liver cells (-18%), but also at an intermediate level in desynchronized young rats (-9%). The same pattern was found for deacetylase sirtuin (SIRT)-1 (-57 and -29%), confirming that jet-lagged young rats have an intermediate aging profile. Our data indicate that an experimental circadian desynchronization in young animals is associated with a precocious aging profile based on 3 well-known markers, as well as a prediabetic phenotype. Such chronic jet lag-induced alterations observed in a diurnal species constitute proof of principle of the need to develop preventive treatments in jet-lagged persons and shift workers.
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Affiliation(s)
- Edith Grosbellet
- *Institute of Cellular and Integrative Neurosciences, Unité Propres de Recherche 3212, and Department of Ecology, Physiology, and Ethology, Hubert Curien Pluridisciplinary Institute, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, University of Strasbourg, Strasbourg, France
| | - Sandrine Zahn
- *Institute of Cellular and Integrative Neurosciences, Unité Propres de Recherche 3212, and Department of Ecology, Physiology, and Ethology, Hubert Curien Pluridisciplinary Institute, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, University of Strasbourg, Strasbourg, France
| | - Mathilde Arrivé
- *Institute of Cellular and Integrative Neurosciences, Unité Propres de Recherche 3212, and Department of Ecology, Physiology, and Ethology, Hubert Curien Pluridisciplinary Institute, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, University of Strasbourg, Strasbourg, France
| | - Stéphanie Dumont
- *Institute of Cellular and Integrative Neurosciences, Unité Propres de Recherche 3212, and Department of Ecology, Physiology, and Ethology, Hubert Curien Pluridisciplinary Institute, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, University of Strasbourg, Strasbourg, France
| | - Sylviane Gourmelen
- *Institute of Cellular and Integrative Neurosciences, Unité Propres de Recherche 3212, and Department of Ecology, Physiology, and Ethology, Hubert Curien Pluridisciplinary Institute, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, University of Strasbourg, Strasbourg, France
| | - Paul Pévet
- *Institute of Cellular and Integrative Neurosciences, Unité Propres de Recherche 3212, and Department of Ecology, Physiology, and Ethology, Hubert Curien Pluridisciplinary Institute, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, University of Strasbourg, Strasbourg, France
| | - Etienne Challet
- *Institute of Cellular and Integrative Neurosciences, Unité Propres de Recherche 3212, and Department of Ecology, Physiology, and Ethology, Hubert Curien Pluridisciplinary Institute, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, University of Strasbourg, Strasbourg, France
| | - François Criscuolo
- *Institute of Cellular and Integrative Neurosciences, Unité Propres de Recherche 3212, and Department of Ecology, Physiology, and Ethology, Hubert Curien Pluridisciplinary Institute, Unité Mixte de Recherche 7178, Centre National de la Recherche Scientifique, University of Strasbourg, Strasbourg, France
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