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Squassina A, Pisanu C, Menesello V, Meloni A, Congiu D, Manchia M, Paribello P, Abate M, Bortolomasi M, Baune BT, Gennarelli M, Minelli A. Leukocyte Telomere Length and Mitochondrial DNA Copy Number in Treatment-Resistant Depression and Response to Electroconvulsive Therapy: A Pilot Longitudinal Study. J ECT 2024:00124509-990000000-00206. [PMID: 39178054 DOI: 10.1097/yct.0000000000001060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/25/2024]
Abstract
OBJECTIVES In this study, we investigated if changes in leukocyte telomere length (LTL) and mitochondrial DNA copy number (mtDNA-cn), 2 markers of cellular aging, are associated with treatment-resistant depression (TRD) and with response to electroconvulsive therapy (ECT). METHODS LTL and mtDNA-cn were measured in 31 TRD patients before (T0), 1 week (T1), and 4 weeks (T2) after the ECT course, as well as in a sample of 65 healthy controls. RESULTS TRD patients had significantly shorter LTL and higher mtDNA-cn compared with healthy controls at baseline. In the TRD sample, LTL was inversely correlated with Montgomery-Åsberg Depression Rating Scale scores at baseline. Baseline levels of LTL or mtDNA-cn were not correlated with response to ECT. Similarly, changes in LTL or mtDNA-cn were not associated with response to ECT either when considered as a dichotomous trait (responders vs nonresponders) or as a percentage change in symptoms improvements. CONCLUSIONS Ours is the first longitudinal study exploring the role of LTL and mtDNA-cn in response to ECT. Findings of this pilot investigation suggest that LTL and mtDNA-cn may constitute disease biomarkers for TRD but are not involved in response to ECT.
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Affiliation(s)
- Alessio Squassina
- From the Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, Cagliari, Italy
| | - Claudia Pisanu
- From the Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, Cagliari, Italy
| | - Valentina Menesello
- Genetics Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Anna Meloni
- From the Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, Cagliari, Italy
| | - Donatella Congiu
- From the Department of Biomedical Sciences, Section of Neuroscience and Clinical Pharmacology, University of Cagliari, Cagliari, Italy
| | - Mirko Manchia
- Section of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari Italy
| | - Pasquale Paribello
- Section of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari Italy
| | - Maria Abate
- Psychiatric Hospital "Villa Santa Chiara," Verona, Italy
| | | | - Bernhard T Baune
- Department of Psychiatry, University of Münster, Münster, Germany; Department of Psychiatry, University of Melbourne, Melbourne, Australia; Florey Institute of Neuroscience and Mental Health, Melbourne, Australia and
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Lu G, Fang T, Li X, Zhang X, Li H, Wu N, Liu F, Hao W, Ye QN, Cheng L, Li J, Li F. Methamphetamine use shortens telomere length in male adults and rats. Drug Alcohol Depend 2024; 256:111094. [PMID: 38262198 DOI: 10.1016/j.drugalcdep.2024.111094] [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: 09/26/2023] [Revised: 12/19/2023] [Accepted: 01/09/2024] [Indexed: 01/25/2024]
Abstract
BACKGROUND Methamphetamine (MA) use increases the risk of age-related diseases. However, it remains uncertain whether MA use exhibits accelerated biological aging, as indicated by telomere length (TL), a proposed marker of aging. Here we conducted studies in both humans and rats to investigate the association between MA use and TL. METHODS We recruited 125 male MA users and 66 healthy controls, aged 30-40 years. MA users were diagnosed using DSM-5 criteria and categorized into two groups: non-severe (n = 78) and severe (n = 47) MA use disorder (MUD). MA-treated conditioned place preference (CPP) rats were utilized to validate our clinical investigations. TL was assessed using real-time polymerase chain reaction. RESULTS At clinical levels, MA users exhibited significantly shorter leukocyte TL compared to healthy controls. Among MA users, individuals with severe MUD had significantly shorter leukocyte TL than those with non-severe MUD. Importantly, both univariate and multivariate linear regression analyses demonstrated a negative association between the severity of MA use and leukocyte TL. In a rat model of MA-induced CPP, leukocyte TL was also significantly shortened after MA administration, especially in rats with higher CPP expression or reinstatement scores. CONCLUSION MA use shortened TL, and the severity of MA use was negatively correlated with TL. These findings provide new insights into the pathophysiology of accelerated aging caused by MA use and may have implications for identifying biomarkers and developing novel treatment strategies for MUD.
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Affiliation(s)
- Guanyi Lu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Ting Fang
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Xinyue Li
- Beijing Institute of Biotechnology, Beijing, China
| | - XiaoJie Zhang
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Hong Li
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Ning Wu
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Feng Liu
- Compulsory Detoxification Center of Changsha Public Security Bureau, Changsha, Hunan, China
| | - Wei Hao
- National Clinical Research Center for Mental Disorders, and Department of Psychiatry, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Qi-Nong Ye
- Beijing Institute of Biotechnology, Beijing, China
| | - Long Cheng
- Beijing Institute of Biotechnology, Beijing, China; The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China.
| | - Jin Li
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China.
| | - Fei Li
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Key Laboratory of Neuropsychopharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing, China.
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3
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Lu L, Zeng H, Wan B, Sun M. Leukocyte telomere length and bipolar disorder risk: evidence from Mendelian randomization analysis. PeerJ 2023; 11:e15129. [PMID: 37020849 PMCID: PMC10069421 DOI: 10.7717/peerj.15129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/04/2023] [Indexed: 04/03/2023] Open
Abstract
Objective
We aim to test whether leukocyte telomere length (LTL) is causally associated with the risk of bipolar disorder (BD) using the Mendelian randomization (MR) method.
Methods
Results of a genome-wide association study (GWAS) conducted with 472,174 individuals of European descent were used to screen for single-nucleotide polymorphisms (SNPs) related with LTL traits. Summary-level data for BD (7,647 cases and 27,303 controls) were obtained from UK Biobank. An inverse-variance-weighted (IVW) method was employed as the primary MR analysis. Sensitivity analyses were conducted via MR-Egger, maximum likelihood, MR-pleiotropy residual sum outlier (MR-PRESSO), and MR-robust adjusted profile score (MR-RAPS) methods. Finally, the MR Steiger test was utilized to validate the hypothesized relationship between exposure and outcome.
Results
Two-sample MR analysis revealed inverse relationships between genetically predicted LTL and BD risk (IVW OR [odds ratio] = 0.800, 95% CI [0.647–0.989] P = 0.039). Genetically predicted LTL exhibits a consistent connection with BD across five MR methods. Sensitivity analyses showed that the genetically determined effect of LTL on BD was stable and reliable. Furthermore, the MR Steiger test demonstrated that LTL was causal for BD rather than the opposite (P < 0.001).
Conclusion
Our findings show that genetically determined LTL reduces the risk of BD. More research is required to clarify the mechanisms underlying this apparent causal connection. In addition, these findings may be useful for developing strategies for the prevention and treatment of BD.
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Affiliation(s)
- Likui Lu
- The First Affiliated Hospital of Soochow University, Institute for Fetology, Suzhou, Jiangsu, China
| | - Hongtao Zeng
- The First Affiliated Hospital of Soochow University, Institute for Fetology, Suzhou, Jiangsu, China
| | - Bangbei Wan
- Hainan Women and Children’s Medical Center, Reproductive Medical Center, Haikou, Hainan, China
- Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Department of Urology, Haikou, Hainan, China
| | - Miao Sun
- The First Affiliated Hospital of Soochow University, Institute for Fetology, Suzhou, Jiangsu, China
- Dushu Lake Hospital Affiliated to Soochow University, Suzhou, Jiangsu Province, China
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Cabrera-Mendoza B, Stertz L, Najera K, Selvaraj S, Teixeira AL, Meyer TD, Fries GR, Walss-Bass C. Within subject cross-tissue analyzes of epigenetic clocks in substance use disorder postmortem brain and blood. Am J Med Genet B Neuropsychiatr Genet 2023; 192:13-27. [PMID: 36056652 PMCID: PMC9742183 DOI: 10.1002/ajmg.b.32920] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/22/2022] [Accepted: 08/16/2022] [Indexed: 12/14/2022]
Abstract
There is a possible accelerated biological aging in patients with substance use disorders (SUD). The evaluation of epigenetic clocks, which are accurate estimators of biological aging based on DNA methylation changes, has been limited to blood tissue in patients with SUD. Consequently, the impact of biological aging in the brain of individuals with SUD remains unknown. In this study, we evaluated multiple epigenetic clocks (DNAmAge, DNAmAgeHannum, DNAmAgeSkinBlood, DNAmPhenoAge, DNAmGrimAge, and DNAmTL) in individuals with SUD (n = 42), including alcohol (n = 10), opioid (n = 19), and stimulant use disorder (n = 13), and controls (n = 10) in postmortem brain (prefrontal cortex) and blood tissue obtained from the same individuals. We found a higher DNAmPhenoAge (β = 0.191, p-value = 0.0104) and a nominally lower DNAmTL (β = -0.149, p-value = 0.0603) in blood from individuals with SUD compared to controls. SUD subgroup analysis showed a nominally lower brain DNAmTL in subjects with alcohol use disorder, compared to stimulant use disorder and controls (β = 0.0150, p-value = 0.087). Cross-tissue analyzes indicated a lower blood DNAmTL and a higher blood DNAmAge compared to their respective brain values in the SUD group. This study highlights the relevance of tissue specificity in biological aging studies and suggests that peripheral measures of epigenetic clocks in SUD may depend on the specific type of drug used.
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Affiliation(s)
- Brenda Cabrera-Mendoza
- PECEM, Faculty of Medicine, Universidad Nacional
Autónoma de México, Mexico City, 04510, Mexico
| | - Laura Stertz
- Louis A. Faillace, MD, Department of Psychiatry and
Behavioral Sciences, McGovern Medical School, University of Texas Health Science
Center at Houston, Houston, TX, 77054, USA
| | - Katherine Najera
- Louis A. Faillace, MD, Department of Psychiatry and
Behavioral Sciences, McGovern Medical School, University of Texas Health Science
Center at Houston, Houston, TX, 77054, USA
| | - Sudhakar Selvaraj
- Louis A. Faillace, MD, Department of Psychiatry and
Behavioral Sciences, McGovern Medical School, University of Texas Health Science
Center at Houston, Houston, TX, 77054, USA
| | - Antonio L. Teixeira
- Louis A. Faillace, MD, Department of Psychiatry and
Behavioral Sciences, McGovern Medical School, University of Texas Health Science
Center at Houston, Houston, TX, 77054, USA
| | - Thomas D. Meyer
- Louis A. Faillace, MD, Department of Psychiatry and
Behavioral Sciences, McGovern Medical School, University of Texas Health Science
Center at Houston, Houston, TX, 77054, USA
| | - Gabriel R. Fries
- Louis A. Faillace, MD, Department of Psychiatry and
Behavioral Sciences, McGovern Medical School, University of Texas Health Science
Center at Houston, Houston, TX, 77054, USA
- Center for Precision Health, School of Biomedical
Informatics, University of Texas Health Science Center at Houston, Houston, TX,
77054, USA
| | - Consuelo Walss-Bass
- Louis A. Faillace, MD, Department of Psychiatry and
Behavioral Sciences, McGovern Medical School, University of Texas Health Science
Center at Houston, Houston, TX, 77054, USA
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Alcántara-Garcés MT, Rodríguez-Ramírez AM, García-Ulloa AC, Hernández-Jiménez S. Comorbidity Between Recent Diagnosis of Type 2 Diabetes and Non-Psychotic Psychiatric Disorders: Metabolic Characteristics and Clinical Correlates. Neuropsychiatr Dis Treat 2022; 18:1151-1163. [PMID: 35719862 PMCID: PMC9202562 DOI: 10.2147/ndt.s364556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/27/2022] [Indexed: 11/25/2022] Open
Abstract
PURPOSE To describe the metabolic status and clinical characteristics associated with NPPD in patients with less than five years of T2D diagnosis and explore the role of age in the presentation of psychiatric comorbidities. PATIENTS AND METHODS This was a cross-sectional study of subjects who attended a comprehensive care program. Patients were assessed using the Mini-International Neuropsychiatric Interview, and clinical and metabolic characteristics were registered. Multivariate logistic regression analyses were conducted to identify risk and protective factors for psychiatric disorders. We performed an analysis to further explore age's influence on our results. RESULTS We included 1953 patients, and 40.1% had any psychiatric disorder. Younger age, female sex, and personal psychiatric history were associated with NPPD. The use of insulin was reported as a protective factor for eating disorders. Body mass index was associated with any psychiatric disorders and eating disorders. The analysis of age reported that patients younger than 45 years had the worst metabolic parameters and increased odds for NPPD, while patients older than 65 years had the best metabolic measures and decreased odds for psychiatric comorbidity. CONCLUSION NPPD were frequent comorbidities in our sample; younger age, female sex, and personal psychiatric history were the most important factors associated with psychiatric comorbidities. Younger subjects experience a higher risk for psychiatric disorders and worst metabolic control.
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Affiliation(s)
- María Teresa Alcántara-Garcés
- Centro de Atención Integral del Paciente con Diabetes (CAIPaDi), Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Alejandra Monserrat Rodríguez-Ramírez
- Centro de Atención Integral del Paciente con Diabetes (CAIPaDi), Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Ana Cristina García-Ulloa
- Centro de Atención Integral del Paciente con Diabetes (CAIPaDi), Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Sergio Hernández-Jiménez
- Centro de Atención Integral del Paciente con Diabetes (CAIPaDi), Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
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Shortened leukocyte telomere length in young adults who use methamphetamine. Transl Psychiatry 2021; 11:519. [PMID: 34628468 PMCID: PMC8502172 DOI: 10.1038/s41398-021-01640-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 04/08/2021] [Accepted: 04/16/2021] [Indexed: 12/23/2022] Open
Abstract
Methamphetamine (METH) use, most prevalent in young adults, has been associated with high rates of morbidity and mortality. The relationship between METH use and accelerated biological aging, which can be measured using leukocyte telomere length (LTL), remains unclear. We examined whether young adult METH users have shorter LTL and explored the relationship between characteristics of METH use and LTL by using Mendelian randomization (MR) analysis. We compared the LTL for 187 METH users and 159 healthy individuals aged between 25 and 34 years and examined the relationship of LTL with METH use variables (onset age, duration, and maximum frequency of METH use) by using regression analyses. In addition, 2-stage-least-squares (2SLS) MR was also performed to possibly avoid uncontrolled confounding between characteristics of METH use and LTL. We found METH users had significantly shorter LTL compared to controls. Multivariate regression analysis showed METH use was negatively associated with LTL (β = -0.36, P < .001). Among METH users, duration of METH use was negatively associated with LTL after adjustment (β = -0.002, P = .01). We identified a single nucleotide polymorphism (SNP) rs6585206 genome-wide associated with duration of METH use. This SNP was used as an instrumental variable to avoid uncontrolled confounding for the relationship between the use duration and LTL shortening. In conclusion, we show that young adult METH users may have shorter LTL compared with controls and longer duration of METH use was significantly associated with telomere shortening. These observations suggest that METH use may accelerate biological senescence.
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Ämmälä AJ, Suvisaari J, Kananen L, Lönnqvist J, Ripatti S, Pirkola S, Paunio T, Hovatta I. Childhood adversities are associated with shorter leukocyte telomere length at adult age in a population-based study. Psychoneuroendocrinology 2021; 130:105276. [PMID: 34051657 DOI: 10.1016/j.psyneuen.2021.105276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/20/2021] [Accepted: 05/16/2021] [Indexed: 10/21/2022]
Abstract
Telomeres are repeat sequences and an associated protein complex located at the end of the chromosomes. They shorten with every cell division and are regarded markers for cellular aging. Shorter leukocyte telomere length (LTL) has been observed in many complex diseases, including psychiatric disorders. However, analyses focusing on psychiatric disorders are mainly based on clinical samples and the significance of shorter LTL on the population level remains uncertain. We addressed this question in a population-based sample from Finland (N = 7142). The survey was performed and the blood samples were collected in 2000-2001 to assess major public health problems and their determinants. DSM-IV diagnoses of major psychiatric illnesses were obtained by interview using the Composite International Diagnostic Interview. Information regarding their risk factors, including the number of self-reported childhood adversities, recent psychological distress, and sleep difficulties was collected by questionnaires. LTL was measured by qPCR. None of the studied psychiatric illnesses, sleep difficulties, or recent psychological distress associated with LTL. However, individuals with three or more childhood adversities had shorter LTL at adult age (β = -0.006, P = 0.005). Also, current occupational status was associated with LTL (β = -0.03, P = 0.04). These effects remained significant after adjusting for known LTL-associated lifestyle or sociodemographic factors. In conclusion, relatively common childhood adversities were associated with shorter LTL at adult age in a nationally representative population-based cohort, implying that childhood adversities may cause accelerated telomere shortening. Our finding has potentially important implications as it supports the view that childhood adversities have an impact on psychological and somatic well-being later in life.
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Affiliation(s)
- Antti-Jussi Ämmälä
- Department of Genetics and Biomarkers, National Institute for Health and Welfare, Mannerheimintie 166, P.O. 30, 00271 Helsinki, Finland; Department of Psychiatry, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
| | - Jaana Suvisaari
- Mental Health and Substance Abuse Services, National Institute for Health and Welfare, Helsinki, Finland
| | - Laura Kananen
- Faculty of Medicine and Health Technology (MET), Tampere University, Tampere, Finland; Gerontology Research Center (GEREC), Finland; Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden; Research Programs Unit, Molecular Neurology, Biomedicum-Helsinki, University of Helsinki, Finland
| | - Jouko Lönnqvist
- Department of Psychiatry, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Mental Health and Substance Abuse Services, National Institute for Health and Welfare, Helsinki, Finland
| | - Samuli Ripatti
- Center of Excellence in Complex Disease Genetics, Institute of Molecular Medicine Finland (FIMM), University of Helsinki, Finland; Faculty of Medicine, University of Helsinki, Finland; Broad Institute of MIT and Harvard, Finland
| | - Sami Pirkola
- Faculty of Social Sciences, Tampere University, Tampere, Finland; Department of Adult Psychiatry, Tampere University Hospital, Pirkanmaa Hospital District, Tampere, Finland
| | - Tiina Paunio
- Department of Genetics and Biomarkers, National Institute for Health and Welfare, Mannerheimintie 166, P.O. 30, 00271 Helsinki, Finland; Department of Psychiatry, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; SleepWell Research Program, Faculty of Medicine, University of Helsinki, P.O. Box 21, 00014, Finland
| | - Iiris Hovatta
- Research Programs Unit, Molecular Neurology, Biomedicum-Helsinki, University of Helsinki, Finland; SleepWell Research Program, Faculty of Medicine, University of Helsinki, P.O. Box 21, 00014, Finland; Department of Psychology and Logopedics, University of Helsinki, Finland; Neuroscience Center, Helsinki Institute of Life Science HiLIFE, University of Helsinki, Finland.
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8
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Ter Meulen WG, Draisma S, van Hemert AM, Schoevers RA, Kupka RW, Beekman ATF, Penninx BWJH. Depressive and anxiety disorders in concert-A synthesis of findings on comorbidity in the NESDA study. J Affect Disord 2021; 284:85-97. [PMID: 33588240 DOI: 10.1016/j.jad.2021.02.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/25/2021] [Accepted: 02/01/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND Comorbidity of depressive and anxiety disorders is common and remains incompletely comprehended. This paper summarizes findings from the Netherlands Study of Depression and Anxiety (NESDA) regarding prevalence, temporal sequence, course and longitudinal patterns; sociodemographic, vulnerability and neurobiological indicators; and functional, somatic and mental health indicators of comorbidity. METHODS Narrative synthesis of earlier NESDA based papers on comorbidity (n=76). RESULTS Comorbidity was the rule in over three-quarter of subjects with depressive and/or anxiety disorders, most often preceded by an anxiety disorder. Higher severity and chronicity characterized a poorer comorbidity course. Over time, transitions between depressive and anxiety disorders were common. Consistent comorbidity risk indicators in subjects with depressive and anxiety disorders were childhood trauma, neuroticism and early age of onset. Psychological vulnerabilities, such as trait avoidance tendencies, were more pronounced in comorbid than in single disorders. In general, there were few differences in biological markers and neuroimaging findings between persons with comorbid versus single disorders. Most functional, somatic, and other mental health indicators, ranging from disability to cardiovascular and psychiatric multimorbidity, were highest in comorbid disorders. LIMITATIONS The observational design of NESDA limits causal inference. Attrition was higher in comorbid relative to single disorders. CONCLUSIONS As compared to single disorders, persons with comorbid depressive and anxiety disorders were characterized by more psychosocial risk determinants, more somatic and other psychiatric morbidities, more functional impairments, and poorer outcome. These results justify specific attention for comorbidity of depressive and anxiety disorders, particularly in treatment settings.
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Affiliation(s)
- Wendela G Ter Meulen
- Amsterdam UMC, Vrije Universiteit Amsterdam, Psychiatry, Amsterdam Public Health, Amsterdam, The Netherlands & GGZ inGeest Specialized Mental Health Care, Research and Innovation, Amsterdam, the Netherlands; GGZ inGeest Specialized Mental Health Care, Research and Innovation, Oldenaller 1, 1081 HJ Amsterdam, the Netherlands.
| | - Stasja Draisma
- Amsterdam UMC, Vrije Universiteit Amsterdam, Psychiatry, Amsterdam Public Health, Amsterdam, The Netherlands & GGZ inGeest Specialized Mental Health Care, Research and Innovation, Amsterdam, the Netherlands; GGZ inGeest Specialized Mental Health Care, Research and Innovation, Oldenaller 1, 1081 HJ Amsterdam, the Netherlands.
| | - Albert M van Hemert
- Leiden University, Leiden University Medical Centre, Department of Psychiatry, Leiden, the Netherlands.
| | - Robert A Schoevers
- University of Groningen, University Medical Center Groningen, Department of Psychiatry, Research School of Behavioral and Cognitive Neurosciences (BCN), Groningen, the Netherlands.
| | - Ralph W Kupka
- Amsterdam UMC, Vrije Universiteit Amsterdam, Psychiatry, Amsterdam Public Health, Amsterdam, The Netherlands & GGZ inGeest Specialized Mental Health Care, Research and Innovation, Amsterdam, the Netherlands; GGZ inGeest Specialized Mental Health Care, Research and Innovation, Oldenaller 1, 1081 HJ Amsterdam, the Netherlands.
| | - Aartjan T F Beekman
- Amsterdam UMC, Vrije Universiteit Amsterdam, Psychiatry, Amsterdam Public Health, Amsterdam, The Netherlands & GGZ inGeest Specialized Mental Health Care, Research and Innovation, Amsterdam, the Netherlands; GGZ inGeest Specialized Mental Health Care, Research and Innovation, Oldenaller 1, 1081 HJ Amsterdam, the Netherlands.
| | - Brenda W J H Penninx
- Amsterdam UMC, Vrije Universiteit Amsterdam, Psychiatry, Amsterdam Public Health, Amsterdam, The Netherlands & GGZ inGeest Specialized Mental Health Care, Research and Innovation, Amsterdam, the Netherlands; GGZ inGeest Specialized Mental Health Care, Research and Innovation, Oldenaller 1, 1081 HJ Amsterdam, the Netherlands.
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Evans JR, Torres-Pérez JV, Miletto Petrazzini ME, Riley R, Brennan CH. Stress reactivity elicits a tissue-specific reduction in telomere length in aging zebrafish (Danio rerio). Sci Rep 2021; 11:339. [PMID: 33431974 PMCID: PMC7801459 DOI: 10.1038/s41598-020-79615-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/26/2020] [Indexed: 01/29/2023] Open
Abstract
Individual differences in personality are associated with variation in healthy aging. Health behaviours are often cited as the likely explanation for this association; however, an underlying biological mechanism may also exist. Accelerated leukocyte telomere shortening is implicated in multiple age-related diseases and is associated with chronic activation of the hypothalamus-pituitary-adrenal (HPA) axis, providing a link between stress-related personality differences and adverse health outcomes. However, the effects of the HPA axis are tissue specific. Thus, leukocyte telomere length may not accurately reflect telomere length in disease-relevant tissues. Here, we examined the correlation between stress reactivity and telomere length in heart and brain tissue in young (6-9 month) and aging (18 month) zebrafish. Stress reactivity was assessed by tank diving and through gene expression. Telomere length was assessed using quantitative PCR. We show that aging zebrafish have shorter telomeres in both heart and brain. Telomere length was inversely related to stress reactivity in heart but not brain of aging individuals. These data support the hypotheses that an anxious predisposition contributes to accelerated telomere shortening in heart tissue, which may have important implications for our understanding of age-related heart disease, and that stress reactivity contributes to age-related telomere shortening in a tissue-specific manner.
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Affiliation(s)
- James R. Evans
- grid.4868.20000 0001 2171 1133School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Rd, London, E1 4NS UK
| | - Jose V. Torres-Pérez
- grid.4868.20000 0001 2171 1133School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Rd, London, E1 4NS UK
| | - Maria Elena Miletto Petrazzini
- grid.4868.20000 0001 2171 1133School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Rd, London, E1 4NS UK ,grid.5608.b0000 0004 1757 3470Department of Biomedical Sciences, University of Padova, Via Ugo Bassi 58/B, 35131 Padova, Italy
| | - Riva Riley
- grid.4868.20000 0001 2171 1133School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Rd, London, E1 4NS UK
| | - Caroline H. Brennan
- grid.4868.20000 0001 2171 1133School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Rd, London, E1 4NS UK
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Aly J, Engmann O. The Way to a Human's Brain Goes Through Their Stomach: Dietary Factors in Major Depressive Disorder. Front Neurosci 2020; 14:582853. [PMID: 33364919 PMCID: PMC7750481 DOI: 10.3389/fnins.2020.582853] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 11/09/2020] [Indexed: 12/12/2022] Open
Abstract
Globally, more than 250 million people are affected by depression (major depressive disorder; MDD), a serious and debilitating mental disorder. Currently available treatment options can have substantial side effects and take weeks to be fully effective. Therefore, it is important to find safe alternatives, which act more rapidly and in a larger number of patients. While much research on MDD focuses on chronic stress as a main risk factor, we here make a point of exploring dietary factors as a somewhat overlooked, yet highly promising approach towards novel antidepressant pathways. Deficiencies in various groups of nutrients often occur in patients with mental disorders. These include vitamins, especially members of the B-complex (B6, B9, B12). Moreover, an imbalance of fatty acids, such as omega-3 and omega-6, or an insufficient supply with minerals, including magnesium and zinc, are related to MDD. While some of them are relevant for the synthesis of monoamines, others play a crucial role in inflammation, neuroprotection and the synthesis of growth factors. Evidence suggests that when deficiencies return to normal, changes in mood and behavior can be, at least in some cases, achieved. Furthermore, supplementation with dietary factors (so called "nutraceuticals") may improve MDD symptoms even in the absence of a deficiency. Non-vital dietary factors may affect MDD symptoms as well. For instance, the most commonly consumed psychostimulant caffeine may improve behavioral and molecular markers of MDD. The molecular structure of most dietary factors is well known. Hence, dietary factors may provide important molecular tools to study and potentially help treat MDD symptoms. Within this review, we will discuss the role of dietary factors in MDD risk and symptomology, and critically discuss how they might serve as auxiliary treatments or preventative options for MDD.
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Affiliation(s)
- Janine Aly
- Faculty of Medicine, Friedrich Schiller Universität, Jena, Germany
| | - Olivia Engmann
- Institute for Human Genetics, Jena University Hospital, Jena, Germany
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11
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Alam MR, Kim DK. Alterations in telomere length and mitochondrial DNA copy number in human lymphocytes on short-term exposure to moderate hypoxia. Toxicol Rep 2020; 7:1443-1447. [PMID: 33163366 PMCID: PMC7600389 DOI: 10.1016/j.toxrep.2020.10.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 10/11/2020] [Accepted: 10/13/2020] [Indexed: 12/19/2022] Open
Abstract
Exposure to moderate hypoxia for 24 h significantly increased telomere length. Telomere elongation is related to the duration of hypoxia exposure. Mitochondrial DNA copy number was unaffected by hypoxia exposure. Mitochondrial DNA copy number is a more stable marker than telomere length alteration under hypoxia.
Hypoxia is related to a variety of diseases, such as cardiovascular and inflammatory diseases and various cancers. Telomere length (TL) may vary according to the hypoxia level and cell types. To the best of our knowledge, no study has investigated the effect of moderate hypoxia on TL and mitochondrial DNA copy number (mtDNAcn) in human lymphocytes. Therefore, in this study, we analyzed the effect of moderate hypoxia on TL in correlation with mtDNAcn. This study included 32 healthy male nonsmoker’s subjects; in this cohort, we had previously studied sister chromatid exchange and microsatellite instability. Blood samples from each subject were divided into three groups: a control group and two experimental groups exposed to moderate hypoxia for 12 or 24 h. Relative TL and mtDNAcn were measured by a quantitative real-time polymerase chain reaction. The TL in the control group did not significantly differ from that in the experimental group subjected to hypoxia for 12 h; however, the TL in the 24 h hypoxia–treated experimental group was significantly higher than that in the control group. The correlation between TL and mtDNAcn was not statistically significant in the two hypoxic states. The increase in TL was observed on exposure to hypoxia for 24 h and not for 12 h; thus, the findings suggest that telomere elongation is related to hypoxia exposure duration. The mtDNAcn in the two experimental groups did not significantly differ from that in the control group. These observations suggest that mtDNAcn alterations show more genetic stability than TL alterations. To the best of our knowledge, this is the first in vitro study on human lymphocytes reporting an increase in TL and no alteration in mtDNAcn after short-time exposure to moderate hypoxia.
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Affiliation(s)
- Mohammad Rizwan Alam
- Department of Medical Genetics, School of Medicine, Keimyung University, Daegu, Republic of Korea
| | - Dae-Kwang Kim
- Department of Medical Genetics, School of Medicine, Keimyung University, Daegu, Republic of Korea.,Hanvit Institute for Medical Genetics, Daegu, Republic of Korea
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12
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Peña E, Powell TR, Arenas C, Cardoner N, Rebasa P, Luna A, Caixàs A, Rosa A. Longitudinal changes in telomere length in a cohort of obese patients submitted to bariatric surgery: a 2-year follow-up. Surg Obes Relat Dis 2020; 16:1794-1801. [PMID: 32741725 DOI: 10.1016/j.soard.2020.06.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/12/2020] [Accepted: 06/13/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Telomere length (TL) is one biomarker of cell aging used to explore the effects of the environment on age-related pathologies. Obesity and high body mass index have been identified as a risk factors for shortened TL. OBJECTIVE To evaluate TL in different subtypes of obese patients, and to examine changes in TL in relation to weight loss after bariatric surgery. SETTING University Hospital in Spain. METHODS A cohort of 94 patients submitted to bariatric surgery were followed-up during 24 months (t24m: lost to follow-up = 0%). All patients were evaluated before surgery (t0) and during the postoperative period (t6m, t12m, and t24m) for body mass index and metabolic variables. We assessed TL at each timepoint using quantitative polymerase chain reactions and the telomere sequence to single-copy gene sequence ratio method. RESULTS Patients with class III obesity showed significantly shorter TL at baseline than those patients with class II obesity (P = .027). No differences in TL were found between patients with or without type 2 diabetes or metabolic syndrome. Longitudinal analysis did not show an effect of time, type of surgery, age, or sex on TL. However, a generalized estimating equation model showed that TL was shorter amongst class III obesity patients across the time course (P = .008). Comparison between patients with obesity class II and class III showed differences in TL at t6m (adjusted P = .024), whereby class II patients had longer TL. However, no difference was observed at the other evaluated times. CONCLUSION Obesity severity may have negative effects on TL independently of type 2 diabetes or metabolic syndrome. Although TL is significantly longer in class II obesity patients relative to class III 6 months after bariatric surgery. This difference is not apparent after 24 months.
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Affiliation(s)
- Elionora Peña
- Secció de Zoologia i Antropologia Biològica, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain; Institut de Biomedicina de la Universitat de Barcelona, Barcelona, Spain
| | - Timothy R Powell
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom; Division of Infectious Diseases, Weill Cornell Medicine, Cornell University, New York, New York
| | - Concepción Arenas
- Secció d'Estadística, Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Narcis Cardoner
- Institut d'Investigació i Innovació Parc Taulí, Sabadell, Spain; Mental Health Department, Corporació Sanitària Parc Taulí, Sabadell, Spain; Depression and anxiety program, Department of Mental Health, Parc Taulí Sabadell, Hospital Universitari, Barcelona, Spain; Department of Psychiatry and Legal Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain; Centre for Biomedical Research Network on Mental Health, Instituto de Salud Carlos III, Barcelona, Spain
| | - Pere Rebasa
- Institut d'Investigació i Innovació Parc Taulí, Sabadell, Spain; Surgery Department, Esofago-gastric Surgery Section, Hospital Universitari Parc Taulí, Sabadell, Spain
| | - Alexis Luna
- Institut d'Investigació i Innovació Parc Taulí, Sabadell, Spain; Surgery Department, Esofago-gastric Surgery Section, Hospital Universitari Parc Taulí, Sabadell, Spain
| | - Assumpta Caixàs
- Institut d'Investigació i Innovació Parc Taulí, Sabadell, Spain; Endocrinology and Nutrition Department, Hospital Universitari Parc Taulí, Medicine Department Universitat Autònoma de Barcelona, Sabadell, Spain.
| | - Araceli Rosa
- Secció de Zoologia i Antropologia Biològica, Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain; Institut de Biomedicina de la Universitat de Barcelona, Barcelona, Spain; Centre for Biomedical Research Network on Mental Health, Instituto de Salud Carlos III, Barcelona, Spain.
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13
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Pisanu C, Congiu D, Manchia M, Caria P, Cocco C, Dettori T, Frau DV, Manca E, Meloni A, Nieddu M, Noli B, Pinna F, Robledo R, Sogos V, Ferri GL, Carpiniello B, Vanni R, Bocchetta A, Severino G, Ardau R, Chillotti C, Zompo MD, Squassina A. Differences in telomere length between patients with bipolar disorder and controls are influenced by lithium treatment. Pharmacogenomics 2020; 21:533-540. [DOI: 10.2217/pgs-2020-0028] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Aim: To assess the role of lithium treatment in the relationship between bipolar disorder (BD) and leukocyte telomere length (LTL). Materials & methods: We compared LTL between 131 patients with BD, with or without a history of lithium treatment, and 336 controls. We tested the association between genetically determined LTL and BD in two large genome-wide association datasets. Results: Patients with BD with a history lithium treatment showed longer LTL compared with never-treated patients (p = 0.015), and similar LTL compared with controls. Patients never treated with lithium showed shorter LTL compared with controls (p = 0.029). Mendelian randomization analysis showed no association between BD and genetically determined LTL. Conclusion: Our data support previous findings showing that long-term lithium treatment might protect against telomere shortening.
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Affiliation(s)
- Claudia Pisanu
- Department of Biomedical Science, Section of Neuroscience & Clinical Pharmacology, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Donatella Congiu
- Department of Biomedical Science, Section of Neuroscience & Clinical Pharmacology, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Mirko Manchia
- Unit of Psychiatry, Department of Public Health, Clinical & Molecular Medicine, University of Cagliari, Cagliari, 09100, Italy
- Unit of Clinical Psychiatry, University Hospital Agency of Cagliari, Cagliari, 09100, Italy
- Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
| | - Paola Caria
- Department of Biomedical Sciences, Unit of Biology & Genetics, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Cristina Cocco
- Department of Biomedical Sciences, NEF Laboratory, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Tinuccia Dettori
- Department of Biomedical Sciences, Unit of Biology & Genetics, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Daniela Virginia Frau
- Department of Biomedical Sciences, Unit of Biology & Genetics, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Elias Manca
- Department of Biomedical Sciences, NEF Laboratory, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Anna Meloni
- Department of Biomedical Science, Section of Neuroscience & Clinical Pharmacology, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Mariella Nieddu
- Department of Biomedical Sciences, Unit of Biology & Genetics, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Barbara Noli
- Department of Biomedical Sciences, NEF Laboratory, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Federica Pinna
- Unit of Psychiatry, Department of Public Health, Clinical & Molecular Medicine, University of Cagliari, Cagliari, 09100, Italy
- Unit of Clinical Psychiatry, University Hospital Agency of Cagliari, Cagliari, 09100, Italy
| | - Renato Robledo
- Department of Biomedical Sciences, Unit of Biology & Genetics, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Valeria Sogos
- Department of Biomedical Sciences, Section of Cytomorphology, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Gian Luca Ferri
- Department of Biomedical Sciences, NEF Laboratory, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Bernardo Carpiniello
- Unit of Psychiatry, Department of Public Health, Clinical & Molecular Medicine, University of Cagliari, Cagliari, 09100, Italy
- Unit of Clinical Psychiatry, University Hospital Agency of Cagliari, Cagliari, 09100, Italy
| | - Roberta Vanni
- Department of Biomedical Sciences, Unit of Biology & Genetics, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Alberto Bocchetta
- Department of Biomedical Science, Section of Neuroscience & Clinical Pharmacology, University of Cagliari, Monserrato, Cagliari, 09042, Italy
- Unit of Clinical Pharmacology, University Hospital Agency of Cagliari, Cagliari, 09100, Italy
| | - Giovanni Severino
- Department of Biomedical Science, Section of Neuroscience & Clinical Pharmacology, University of Cagliari, Monserrato, Cagliari, 09042, Italy
| | - Raffaella Ardau
- Unit of Clinical Pharmacology, University Hospital Agency of Cagliari, Cagliari, 09100, Italy
| | - Caterina Chillotti
- Unit of Clinical Pharmacology, University Hospital Agency of Cagliari, Cagliari, 09100, Italy
| | - Maria Del Zompo
- Department of Biomedical Science, Section of Neuroscience & Clinical Pharmacology, University of Cagliari, Monserrato, Cagliari, 09042, Italy
- Unit of Clinical Pharmacology, University Hospital Agency of Cagliari, Cagliari, 09100, Italy
| | - Alessio Squassina
- Department of Biomedical Science, Section of Neuroscience & Clinical Pharmacology, University of Cagliari, Monserrato, Cagliari, 09042, Italy
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Patterns of change in telomere length over the first three years of life in healthy children. Psychoneuroendocrinology 2020; 115:104602. [PMID: 32120019 PMCID: PMC7183438 DOI: 10.1016/j.psyneuen.2020.104602] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/18/2019] [Accepted: 02/03/2020] [Indexed: 12/23/2022]
Abstract
There is growing interest in the use of telomere length as a biomarker of health and a predictor of later morbidity and mortality. However, little is known about developmentally expected telomere erosion over the first years of life. This gap hinders our ability to interpret the meaning of relative telomere length and rate of attrition in relation to risk factors and health outcomes. The overall goal of this study was to examine the rate of relative telomere length attrition in a large, normative sample of healthy children (N = 630) followed from infancy to three years of age. A secondary goal was to explore associations between sociodemographic characteristics and telomere erosion over this time period. Relative telomere length was assessed from DNA in saliva samples collected in infancy (M = 8.6 months), age 2 years (M = 25.2 months), and age 3 years (M = 38.3 months). In the sample as a whole, relative telomere length decreased from infancy to 2 years but remained stable from 2 years to 3 years. Notably, increases in relative telomere length were observed in 29 % of children between infancy and 2 years of age and in 46 % of children between 2 and 3 years of age; 62 % of children showed both increases and decreases in relative telomere length across the study period. Females showed longer relative telomere length than males, regardless of timepoint. There was some evidence that parental age and family finances were associated with changes in child relative telomere length across time. Overall, the findings suggest that telomere length attrition is not uniform across the early years of life, with the most rapid attrition occurring during the first two years, and that increases as well as decreases in telomere length during this period are commonly observed.
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15
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Navarro-Mateu F, Rubio-Aparicio M, Cayuela P, Álvarez FJ, Roca-Vega A, Chirlaque MD, Cayuela ML, Husky M, Martínez S, Sánchez-Meca J. The association of telomere length with substance use disorders: systematic review and meta-analysis protocol. Syst Rev 2019; 8:298. [PMID: 31787100 PMCID: PMC6886210 DOI: 10.1186/s13643-019-1199-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 10/15/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND The present protocol was designed for a systematic review and meta-analysis aimed at determining the association of telomere length with substance use disorders with the exclusion of nicotine addiction, and to identify potential moderators of the effect of telomere length. Such methodological information may provide guidance to improve the quality of future research on this important topic. METHODS Potential studies will be identified through electronic databases (PubMed/MEDLINE, EMBASE, PsycINFO, and Web of Science) up from inception onwards. The inclusion criteria will include published or unpublished observational studies (cohort, case-control, and cross-sectional studies) reporting telomere length in adult patients with substance use disorder compared with a control group. Non-human studies or other study designs such as reviews, case-only, family-based, and/or population studies with only healthy participants will be excluded, as well as those focused solely on nicotine addiction. The main outcome will be telomere length in adults with substance use disorder (primary) and, specifically, in those with alcohol use disorder (secondary). Two investigators will independently evaluate the preselected studies for possible inclusion and will extract data following a standardized protocol. Disagreements will be resolved by consensus. The risk of bias of all included studies will be assessed using the Newcastle-Ottawa Quality Assessment Scale for non-randomized studies. Data will be converted into standardized mean differences as effect size index, and random-effects models will be used for the meta-analysis. Cochran's Q statistic, I2 index, and visual inspection of the forest plot will be used to verify study heterogeneity. Subgroup analyses and meta-regressions will be conducted to ascertain heterogeneity. Several sensitivity analyses will be conducted to address the influence of potential confounding factors. Publication bias will be examined using the "funnel plot" method with Duval and Tweedie's trim-and-fill method and Egger test. DISCUSSION This systematic review will assess the association of telomere length with substance use disorders aside from nicotine addiction. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration number CRD42019119785.
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Affiliation(s)
- Fernando Navarro-Mateu
- Unidad de Docencia, Investigación y Formación en Salud Mental (UDIF-SM), Servicio Murciano de Salud, c/ Lorca, n° 58, 30120, Murcia, Spain. .,CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain. .,IMIB-Arrixaca, Murcia, Spain. .,Departamento de Psicología Básica y Metodología, University of Murcia, Murcia, Spain.
| | | | - Pedro Cayuela
- Escuela Universitaria de Enfermería de Cartagena, University of Murcia, Murcia, Spain
| | - Francisco-Javier Álvarez
- Unidad de Docencia, Investigación y Formación en Salud Mental (UDIF-SM), Servicio Murciano de Salud, c/ Lorca, n° 58, 30120, Murcia, Spain
| | - Agustín Roca-Vega
- Biblioteca Virtual MurciaSalud, Centro Tecnológico de Información y Documentación Sanitaria, Servicio Murciano de Salud, Murcia, Spain
| | - María Dolores Chirlaque
- CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.,IMIB-Arrixaca, Murcia, Spain.,Servicio de Epidemiología, Consejería de Salud, Murcia, Spain.,Departamento de Ciencias Sociosanitarias, University of Murcia, Murcia, Spain
| | - María Luisa Cayuela
- IMIB-Arrixaca, Murcia, Spain.,Grupo Telomerasa, Cáncer y Envejecimiento, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Mathilde Husky
- Laboratoire de Psychologie EA4139, Université de Bordeaux, Bordeaux, France
| | | | - Julio Sánchez-Meca
- Departamento de Psicología Básica y Metodología, University of Murcia, Murcia, Spain
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16
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Gao K, Wei C, Zhu J, Wang X, Chen G, Luo Y, Zhang D, Yue W, Yu H. Exploring the Causal Pathway From Telomere Length to Alzheimer's Disease: An Update Mendelian Randomization Study. Front Psychiatry 2019; 10:843. [PMID: 31803085 PMCID: PMC6873744 DOI: 10.3389/fpsyt.2019.00843] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 10/24/2019] [Indexed: 12/20/2022] Open
Abstract
Increasing evidence shows that telomere length shortening is associated with the risk for Alzheimer's disease (AD), pointing to a potential modifiable target for prevention. However, the causality of this association is still not clear. To investigate the causal relationship between telomere length and AD, we use two-sample Mendelian randomization (MR) to assess potential causal inference. We used summary-level data for telomere length (9,190 participants) and AD (71,880 cases and 383,378 controls). We performed two-sample MR analysis with single nucleotide polymorphisms previously identified to be associated with telomere length. The MR analyses were conducted using the inverse-variance-weighted method and complemented with the maximum likelihood, weighted median, weighted mode approaches. MR evidence suggested that shorter telomere length was causally associated with a higher risk for AD (inverse-variance weighted estimate of odds ratio (OR): 1.03 per SD decrease of telomere length, P=1.21×10-2). The maximum likelihood, weighted median, weighted mode yielded a similar pattern of effects. The results were similar in sensitivity analyses. Using genetic instruments identified from large-scale genome-wide association study, robust evidence supports a causal role of telomere length shortening with increased risk of AD.
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Affiliation(s)
- Kai Gao
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
- NHC Key Laboratory of Mental Health, National Clinical Research Center for Mental Disorders, Ministry of Health, Peking University Sixth Hospital (Institute of Mental Health), Peking University, Beijing, China
| | - Chen Wei
- Department of Psychiatry, Jining Psychiatric Hospital, Jining, China
| | - Jin Zhu
- Department of Psychiatry, Jining Medical University, Jining, China
| | - Xin Wang
- Department of Psychiatry, Jining Medical University, Jining, China
| | - Guoqing Chen
- Department of Psychiatry, Jining Medical University, Jining, China
| | - Yangyang Luo
- Department of Psychiatry, Jining Medical University, Jining, China
| | - Dai Zhang
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China
- NHC Key Laboratory of Mental Health, National Clinical Research Center for Mental Disorders, Ministry of Health, Peking University Sixth Hospital (Institute of Mental Health), Peking University, Beijing, China
- PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
| | - Weihua Yue
- NHC Key Laboratory of Mental Health, National Clinical Research Center for Mental Disorders, Ministry of Health, Peking University Sixth Hospital (Institute of Mental Health), Peking University, Beijing, China
| | - Hao Yu
- Department of Psychiatry, Jining Medical University, Jining, China
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17
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Pisanu C, Tsermpini EE, Skokou M, Kordou Z, Gourzis P, Assimakopoulos K, Congiu D, Meloni A, Balasopoulos D, Patrinos GP, Squassina A. Leukocyte telomere length is reduced in patients with major depressive disorder. Drug Dev Res 2019; 81:268-273. [DOI: 10.1002/ddr.21612] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 09/30/2019] [Accepted: 10/01/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Claudia Pisanu
- Department of Biomedical Sciences, Section of Neuroscience and Clinical PharmacologyUniversity of Cagliari Cagliari Italy
| | | | - Maria Skokou
- Psychiatric Clinic, Patras General Hospital Patras Greece
| | - Zoe Kordou
- Department of PharmacyUniversity of Patras School of Health Sciences Patras Greece
| | - Philippos Gourzis
- Department of MedicineUniversity of Patras School of Health Sciences Patras Greece
| | | | - Donatella Congiu
- Department of Biomedical Sciences, Section of Neuroscience and Clinical PharmacologyUniversity of Cagliari Cagliari Italy
| | - Anna Meloni
- Department of Biomedical Sciences, Section of Neuroscience and Clinical PharmacologyUniversity of Cagliari Cagliari Italy
| | | | - George P. Patrinos
- Department of PharmacyUniversity of Patras School of Health Sciences Patras Greece
- Department of PathologyUnited Arab Emirates University, College of Medicine and Health Sciences Al‐Ain UAE
- Zayed Center of Health SciencesUnited Arab Emirates University Al‐Ain UAE
| | - Alessio Squassina
- Department of Biomedical Sciences, Section of Neuroscience and Clinical PharmacologyUniversity of Cagliari Cagliari Italy
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18
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Baek JH, Son H, Jeong YH, Park SW, Kim HJ. Chronological Aging Standard Curves of Telomere Length and Mitochondrial DNA Copy Number in Twelve Tissues of C57BL/6 Male Mouse. Cells 2019; 8:cells8030247. [PMID: 30875959 PMCID: PMC6468494 DOI: 10.3390/cells8030247] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 12/18/2022] Open
Abstract
The changes in telomere length and mitochondrial DNA copy number (mtDNAcn) are considered to be aging markers. However, many studies have provided contradictory or only fragmentary information about changes of these markers in animal models, due to inaccurate analysis methods and a lack of objective aging standards. To establish chronological aging standards for these two markers, we analyzed telomere length and mtDNAcn in 12 tissues-leukocytes, prefrontal cortex, hippocampus, pituitary gland, adrenal gland, retina, aorta, liver, kidney, spleen, skeletal muscle, and skin-from a commonly used rodent model, C57BL/6 male mice aged 2⁻24 months. It was found that at least one of the markers changed age-dependently in all tissues. In the leukocytes, hippocampus, retina, and skeletal muscle, both markers changed age-dependently. As a practical application, the aging marker changes were analyzed after chronic immobilization stress (CIS) to see whether CIS accelerated aging or not. The degree of tissue-aging was calculated using each standard curve and found that CIS accelerated aging in a tissue-specific manner. Therefore, it is expected that researchers can use our standard curves to objectively estimate tissue-specific aging accelerating effects of experimental conditions for least 12 tissues in C57BL/6 male mice.
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Affiliation(s)
- Ji Hyeong Baek
- Department of Anatomy and Convergence Medical Sciences, Gyeongsang National University School of Medicine, Jinju 52727, Korea.
- Institute of Health Sciences, Bio Anti-aging Medical Research Center, Gyeongsang National University, Jinju 52727, Korea.
| | - Hyeonwi Son
- Department of Anatomy and Convergence Medical Sciences, Gyeongsang National University School of Medicine, Jinju 52727, Korea.
- Institute of Health Sciences, Bio Anti-aging Medical Research Center, Gyeongsang National University, Jinju 52727, Korea.
| | - Young-Hoon Jeong
- Institute of Health Sciences, Bio Anti-aging Medical Research Center, Gyeongsang National University, Jinju 52727, Korea.
- Department of Internal Medicine, Gyeongsang National University School of Medicine and Cardiovascular Center, Gyeongsang National University Changwon Hospital, Changwon 51472, Korea.
| | - Sang Won Park
- Institute of Health Sciences, Bio Anti-aging Medical Research Center, Gyeongsang National University, Jinju 52727, Korea.
- Department of Pharmacology and Convergence Medical Sciences, Gyeongsang National University School of Medicine, Jinju 52727, Korea.
| | - Hyun Joon Kim
- Department of Anatomy and Convergence Medical Sciences, Gyeongsang National University School of Medicine, Jinju 52727, Korea.
- Institute of Health Sciences, Bio Anti-aging Medical Research Center, Gyeongsang National University, Jinju 52727, Korea.
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Powell TR, De Jong S, Breen G, Lewis CM, Dima D. Telomere length as a predictor of emotional processing in the brain. Hum Brain Mapp 2018; 40:1750-1759. [PMID: 30511786 PMCID: PMC6492163 DOI: 10.1002/hbm.24487] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 11/20/2018] [Accepted: 11/24/2018] [Indexed: 12/24/2022] Open
Abstract
Shorter telomere length (TL) has been associated with the development of mood disorders as well as abnormalities in brain morphology. However, so far, no studies have considered the role TL may have on brain function during tasks relevant to mood disorders. In this study, we examine the relationship between TL and functional brain activation and connectivity, while participants (n = 112) perform a functional magnetic resonance imaging (fMRI) facial affect recognition task. Additionally, because variation in TL has a substantial genetic component we calculated polygenic risk scores for TL to test if they predict face‐related functional brain activation. First, our results showed that TL was positively associated with increased activation in the amygdala and cuneus, as well as increased connectivity from posterior regions of the face network to the ventral prefrontal cortex. Second, polygenic risk scores for TL show a positive association with medial prefrontal cortex activation. The data support the view that TL and genetic loading for shorter telomeres, influence the function of brain regions known to be involved in emotional processing.
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Affiliation(s)
- Timothy R Powell
- Social, Genetic and Developmental Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
| | - Simone De Jong
- Social, Genetic and Developmental Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom.,National Institute for Health Research Biomedical Research Centre for Mental Health, Institute of Psychiatry, Psychology and Neuroscience at the Maudsley Hospital and King's College London, London, United Kingdom
| | - Gerome Breen
- Social, Genetic and Developmental Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom.,National Institute for Health Research Biomedical Research Centre for Mental Health, Institute of Psychiatry, Psychology and Neuroscience at the Maudsley Hospital and King's College London, London, United Kingdom
| | - Cathryn M Lewis
- Social, Genetic and Developmental Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom.,National Institute for Health Research Biomedical Research Centre for Mental Health, Institute of Psychiatry, Psychology and Neuroscience at the Maudsley Hospital and King's College London, London, United Kingdom.,Department of Medical and Molecular Genetics, Guy's Hospital, King's College London, London, United Kingdom
| | - Danai Dima
- Department of Psychology, School of Arts and Social Sciences, City, University of London, London, United Kingdom.,Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
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20
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Xavier G, Spindola LM, Ota VK, Carvalho CM, Maurya PK, Tempaku PF, Moretti PN, Mazotti DR, Sato JR, Brietzke E, Miguel EC, Grassi-Oliveira R, Mari J, Bressan RA, Gadelha A, Pan PM, Belangero SI. Effect of male-specific childhood trauma on telomere length. J Psychiatr Res 2018; 107:104-109. [PMID: 30384090 DOI: 10.1016/j.jpsychires.2018.10.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 09/10/2018] [Accepted: 10/18/2018] [Indexed: 10/28/2022]
Abstract
Child maltreatment (CM) is a global issue with serious lifelong consequences. In fact, maltreatment during childhood might be an important risk factor for the development of psychiatric disorders. Furthermore, previous studies showed a strong relationship between telomere length (TL) and early life stress. Considering that only a few studies have evaluated this relationship in children and that even fewer considered the sex as a possible moderator, we investigated whether TL in the blood of both children and adolescents was associated with psychopathology and with a history of CM, and whether these associations were moderated by the sex. In this cross-sectional study, 561 individuals (ranging between 6 and 14 years of age) from a large prospective community school-based study, i.e., the Brazilian High-Risk Cohort (HRC), were evaluated. The Child Behavior Checklist (CBCL) score was used to assess psychopathology, whereas a latent variable encompassing some questions about history of adverse environment and trauma was employed to determine the CM history. TL was measured in blood cells using a multiplex quantitative polymerase chain reaction. Additionally, TL was inserted in two moderation models, in which the CBCL score/CM, TL and sex were the independent variables, the outcome, and the moderator variable, respectively. Although an association between psychiatric symptoms and TL was not observed, a relation between CM and TL moderated by the sex was seen, indicating that males with higher CM scores presented with shorter telomeres than did females. Our results suggest that child maltreatment could influence telomere length in both children and adolescents and that this effect is mediated by the sex.
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Affiliation(s)
- Gabriela Xavier
- Genetics Division of Department of Morphology and Genetics of Universidade Federal de Sao Paulo (UNIFESP), Brazil; LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil
| | - Letícia M Spindola
- Genetics Division of Department of Morphology and Genetics of Universidade Federal de Sao Paulo (UNIFESP), Brazil; LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Vanessa K Ota
- Genetics Division of Department of Morphology and Genetics of Universidade Federal de Sao Paulo (UNIFESP), Brazil; LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil
| | - Carolina M Carvalho
- Genetics Division of Department of Morphology and Genetics of Universidade Federal de Sao Paulo (UNIFESP), Brazil; LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Pawan Kumar Maurya
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Biochemistry, Central University of Haryana, Mahendergarh, Haryana, India
| | | | - Patricia N Moretti
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Genetics and Morphology, Universidade de Brasília (UNB) Brasília, Brazil
| | - Diego R Mazotti
- Center for Sleep and Circadian Neurobiology, University of Pennsylvania, Philadelphia, United States
| | - João Ricardo Sato
- Center of Mathematics, Computation and Cognition, Universidade Federal do ABC, Brazil
| | | | | | - Rodrigo Grassi-Oliveira
- Post-Graduation Program in Psychology, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Brazil; Developmental Cognitive Neuroscience Lab, PUCRS, Brazil
| | - Jair Mari
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Rodrigo A Bressan
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Ary Gadelha
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Pedro M Pan
- LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil
| | - Sintia Iole Belangero
- Genetics Division of Department of Morphology and Genetics of Universidade Federal de Sao Paulo (UNIFESP), Brazil; LiNC - Interdisciplinary Laboratory of Clinical Neurosciences of UNIFESP, Brazil; Department of Psychiatry of UNIFESP, Brazil.
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21
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Palmos AB, Breen G, Goodwin L, Frissa S, Hatch SL, Hotopf M, Thuret S, Lewis CM, Powell TR. Genetic Risk for Psychiatric Disorders and Telomere Length. Front Genet 2018; 9:468. [PMID: 30459805 PMCID: PMC6232668 DOI: 10.3389/fgene.2018.00468] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 09/24/2018] [Indexed: 01/07/2023] Open
Abstract
Background: Previous studies have revealed associations between psychiatric disorder diagnosis and shorter telomere length. Here, we attempt to discern whether genetic risk for psychiatric disorders, or use of pharmacological treatments (i.e., antidepressants), predict shorter telomere length and risk for aging-related disease in a United Kingdom population sample. Methods: DNA samples from blood were available from 351 participants who were recruited as part of the South East London Community Health (SELCoH) Study, and for which whole-genome genotype data was available. Leukocyte telomere length was characterized using quantitative polymerase chain reactions. Individualized polygenic risk scores for major depressive disorder (MDD), bipolar disorder (BD), and schizophrenia (SCZ) were calculated using Psychiatric Genomics Consortium summary statistics. We subsequently performed linear models, to discern the impact polygenic risk for psychiatric disorders (an etiological risk factor) and antidepressant use (common pharmacological treatment) have on telomere length, whilst accounting for other lifestyle/health factors (e.g., BMI, smoking). Results: There were no significant associations between polygenic risk for any of the psychiatric disorders tested and telomere length (p > 0.05). Antidepressant use was significantly associated with shorter telomere length and this was independent from a depression diagnosis or current depression severity (p ≤ 0.01). Antidepressant use was also associated with a significantly higher risk of aging-related disease, which was independent from depression diagnosis (p ≤ 0.05). Conclusion: Genetic risk for psychiatric disorders is not associated with shorter telomere length. Further studies are now needed to prospectively characterize if antidepressant use increases risk for aging-related disease and telomere shortening, or whether people who age faster and have aging-related diseases are just more likely to be prescribed antidepressants.
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Affiliation(s)
- Alish B Palmos
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
| | - Gerome Breen
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom.,National Institute for Health Research Biomedical Research Centre for Mental Health, Institute of Psychiatry, Psychology and Neuroscience, Maudsley Hospital, King's College London, London, United Kingdom
| | - Laura Goodwin
- Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom.,Department of Psychological Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Souci Frissa
- Health Service & Population Research Department, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Stephani L Hatch
- Health Service & Population Research Department, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom
| | - Matthew Hotopf
- National Institute for Health Research Biomedical Research Centre for Mental Health, Institute of Psychiatry, Psychology and Neuroscience, Maudsley Hospital, King's College London, London, United Kingdom.,Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom.,South London and Maudsley NHS Foundation Trust, London, United Kingdom
| | - Sandrine Thuret
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
| | - Cathryn M Lewis
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom.,National Institute for Health Research Biomedical Research Centre for Mental Health, Institute of Psychiatry, Psychology and Neuroscience, Maudsley Hospital, King's College London, London, United Kingdom
| | - Timothy R Powell
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
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22
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Liu MY, Nemes A, Zhou QG. The Emerging Roles for Telomerase in the Central Nervous System. Front Mol Neurosci 2018; 11:160. [PMID: 29867352 PMCID: PMC5964194 DOI: 10.3389/fnmol.2018.00160] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 04/26/2018] [Indexed: 12/11/2022] Open
Abstract
Telomerase, a specialized ribonucleoprotein enzyme complex, maintains telomere length at the 3′ end of chromosomes, and functions importantly in stem cells, cancer and aging. Telomerase exists in neural stem cells (NSCs) and neural progenitor cells (NPCs), at a high level in the developing and adult brains of humans and rodents. Increasing studies have demonstrated that telomerase in NSCs/NPCs plays important roles in cell proliferation, neuronal differentiation, neuronal survival and neuritogenesis. In addition, recent works have shown that telomerase reverse transcriptase (TERT) can protect newborn neurons from apoptosis and excitotoxicity. However, to date, the link between telomerase and diseases in the central nervous system (CNS) is not well reviewed. Here, we analyze the evidence and summarize the important roles of telomerase in the CNS. Understanding the roles of telomerase in the nervous system is not only important to gain further insight into the process of the neural cell life cycle but would also provide novel therapeutic applications in CNS diseases such as neurodegenerative condition, mood disorders, aging and other ailments.
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Affiliation(s)
- Meng-Ying Liu
- Department of Clinical Pharmacology, Pharmacy College, Nanjing Medical University, Nanjing, China.,The Affiliated Hospital of Nanjing University Medical School, Nanjing Drum Tower Hospital, Nanjing, China
| | - Ashley Nemes
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Qi-Gang Zhou
- Department of Clinical Pharmacology, Pharmacy College, Nanjing Medical University, Nanjing, China.,Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States
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23
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Effect of master mixes on the measurement of telomere length by qPCR. Mol Biol Rep 2018; 45:633-638. [DOI: 10.1007/s11033-018-4175-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 03/24/2018] [Indexed: 01/25/2023]
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24
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Fries GR, Bauer IE, Scaini G, Wu MJ, Kazimi IF, Valvassori SS, Zunta-Soares G, Walss-Bass C, Soares JC, Quevedo J. Accelerated epigenetic aging and mitochondrial DNA copy number in bipolar disorder. Transl Psychiatry 2017; 7:1283. [PMID: 29225347 PMCID: PMC5802567 DOI: 10.1038/s41398-017-0048-8] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 09/13/2017] [Indexed: 12/14/2022] Open
Abstract
Bipolar disorder (BD) has been previously associated with accelerated aging; yet, the mechanisms underlying this association are largely unknown. The epigenetic clock has been increasingly recognized as a valuable aging marker, although its association with other biological clocks in BD patients and high-risk subjects, such as telomere length and mitochondrial DNA (mtDNA) copy number, has never been investigated. We included 22 patients with BD I, 16 siblings of BD patients, and 20 healthy controls in this analysis. DNA was isolated from peripheral blood and interrogated for genome-wide DNA methylation, mtDNA copy number, and telomere length. DNA methylation age (DNAm age) and accelerated aging were calculated using the Horvath age estimation algorithm in blood and in postmortem brain from BD patients and nonpsychiatric controls using publicly available data. Older BD patients presented significantly accelerated epigenetic aging compared to controls, whereas no difference was detected among the younger subjects. Patients showed higher levels of mtDNA copy number, while no difference was found between controls and siblings. mtDNA significantly correlated with epigenetic age acceleration among older subjects, as well and with global functioning in our sample. Telomere length did not show significant differences between groups, nor did it correlate with epigenetic aging or mtDNA copy number. These results suggest that BD may involve an accelerated epigenetic aging, which might represent a novel target for treating BD and subjects at risk. In particular, our results suggest a complex interplay between biological clocks to determine the accelerated aging and its consequences in BD.
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Affiliation(s)
- Gabriel R Fries
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), 1941 East Rd, 77054, Houston, TX, USA
| | - Isabelle E Bauer
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Giselli Scaini
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), 1941 East Rd, 77054, Houston, TX, USA
| | - Mon-Ju Wu
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Iram F Kazimi
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Samira S Valvassori
- Laboratory of Neurosciences, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil
| | - Giovana Zunta-Soares
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Consuelo Walss-Bass
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), 1941 East Rd, 77054, Houston, TX, USA
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Jair C Soares
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Joao Quevedo
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), 1941 East Rd, 77054, Houston, TX, USA.
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA.
- Laboratory of Neurosciences, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil.
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA.
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