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Mlakar V, Birkenæs V, Elvsaashagen T, Ormerod MBEG, Quintana DS, Ueland T, Melle I, Lagerberg TV, Djurovic S, Martin-Ruiz C, Steen NE, Andreassen OA, Aas M. Telomere length and verbal learning in bipolar disorders. J Affect Disord 2023; 339:555-560. [PMID: 37459977 DOI: 10.1016/j.jad.2023.07.087] [Citation(s) in RCA: 1] [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: 03/19/2023] [Revised: 07/10/2023] [Accepted: 07/14/2023] [Indexed: 07/24/2023]
Abstract
INTRODUCTION Recent studies indicate accelerated ageing processes, shorter telomere length and poorer cognitive functioning in patients with bipolar disorder. The neurobiology underlying cognitive function in bipolar disorder is yet to be established. We anticipated that accelerated ageing as indicated by shortened telomere length, would be associated with reduced cognitive performance in bipolar disorder, particularly for ageing sensitive functions such as memory and learning. METHODS The study consisted of 647 participants (bipolar disorder [n = 246] and healthy controls [n = 401]). All participants underwent a standardized neuropsychological test battery, including working memory, executive functioning, processing speed, verbal learning, and verbal memory. Leucocyte telomere length was measured via blood and determined by quantitative real-time Polymerase Chain Reaction (qPCR) providing a telomere to single copy ratio (T/S ratio). The T/S ratio was used as an estimate of the mean telomere length of each participant. All analyses were adjusted for medication, Daily Defined Dose (DDD), chronological age, sex, and ethnicity. RESULTS Patients had shorter telomere lengths than healthy controls (Cohen's d = 0.11, p = 0.01). Within patients', a positive association was observed for verbal learning and telomere length (β = 0.14, p = 0.025), along with a trend for verbal memory and telomere length (β = 0.11, p = 0.07). No other associations were observed for telomere length and cognitive functioning in the patient or the control group (p > 0.1). CONCLUSION Our study may suggest poorer brain health in bipolar disorder as indexed by shorter telomere length and reduced learning correlates. However, the role of telomere length on cognitive functioning in bipolar disorder seems limited.
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Affiliation(s)
- Vid Mlakar
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK
| | - Viktoria Birkenæs
- NORMENT Centre for Psychosis Research, Oslo University Hospital, University of Oslo, Norway
| | - Torbjørn Elvsaashagen
- NORMENT Centre for Psychosis Research, Oslo University Hospital, University of Oslo, Norway
| | - Monica B E G Ormerod
- NORMENT Centre for Psychosis Research, Oslo University Hospital, University of Oslo, Norway
| | - Daniel S Quintana
- NORMENT Centre for Psychosis Research, Oslo University Hospital, University of Oslo, Norway; Department of Psychology, University of Oslo, Oslo, Norway; NevSom, Department of Rare Disorders, Oslo University Hospital, Oslo, Norway
| | - Torill Ueland
- NORMENT Centre for Psychosis Research, Oslo University Hospital, University of Oslo, Norway; Department of Psychology, University of Oslo, Oslo, Norway
| | - Ingrid Melle
- NORMENT Centre for Psychosis Research, Oslo University Hospital, University of Oslo, Norway
| | - Trine V Lagerberg
- NORMENT Centre for Psychosis Research, Oslo University Hospital, University of Oslo, Norway
| | - Srdjan Djurovic
- NORMENT Centre for Psychosis Research, Oslo University Hospital, University of Oslo, Norway; Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - Carmen Martin-Ruiz
- BioScreening Core Facility-CAV, Ageing Research Laboratories, Newcastle University, Campus for Ageing and Vitality, UK
| | - Nils Eiel Steen
- NORMENT Centre for Psychosis Research, Oslo University Hospital, University of Oslo, Norway
| | - Ole A Andreassen
- NORMENT Centre for Psychosis Research, Oslo University Hospital, University of Oslo, Norway
| | - Monica Aas
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK; Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK; Dept. of Behavioural Sciences, OsloMet - Oslo Metropolitan University, Oslo, Norway.
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Zakharova N, Bravve L, Mamedova G, Kaydan M, Ershova E, Martynov A, Veiko N, Kostyuk S. Telomere Length as a Marker of Suicidal Risk in Schizophrenia. CONSORTIUM PSYCHIATRICUM 2022; 3:37-47. [PMID: 39045115 PMCID: PMC11262099 DOI: 10.17816/cp171] [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: 03/29/2022] [Accepted: 05/30/2022] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Schizophrenia and suicidal behavior are associated with shortening in the length of telomeres. The aim of the study was to compare the content (pg/mcg) of telomeric repeat in DNA isolated from peripheral blood cells in three groups of subjects: patients with schizophrenia and a history of suicide attempts, patients with schizophrenia without suicidal tendencies, and healthy control volunteers. METHODS Relapses according to gender and age were examined in 47 patients with schizophrenia with suicidal behavior, 47 patients without self-destructive conditions, and 47 volunteers with healthy control and maintenance for the content of telomeric and the number of copies of mitochondrial DNA (mtDNA) in peripheral blood leukocytes. RESULTS Analysis of determining the content of telomeric repeat (TR) in the DNA of massive weight gain in the series: patients with schizophrenia and suicidal attempts - patients with schizophrenia without suicidal observations - healthy controls (225±28.4 (227 [190; 250]) vs. 243±21 (245 [228; 260]) vs. 255±17.9 (255 [242; 266]), p <0.005. The same trend is observed for the number of mtDNA copies (257±101.5 (250 [194; 297])) vs. 262.3±59.3 (254 [217; 312]) vs. 272±79.9 (274 [213; 304]); p=0.012), but no significant differences were recorded. CONCLUSIONS For the first time, the phenomenon of telomere shortening was discovered in schizophrenics with suicidal risk. The length of the telomere corresponds to the parameter of a biological marker - an objectively measured indicator of normal or pathological processes, but gaining an idea of its reliability is still necessary for verification with an assessment of its sensitivity, specificity, and positive and negative predictive value. The telomere may be considered a putative predictive indicator of suicidal risk.
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Pippal N, Halder S, Srivastava S, Kar R, Gupta R, Anthonio AE. Correlation between telomere length and efficacy of oral and long-acting injectable antipsychotics on severity and cognitive impairment of schizophrenia. Int J Psychiatry Clin Pract 2022; 26:157-164. [PMID: 34715000 DOI: 10.1080/13651501.2021.1994613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To study the correlation between telomere length (TL) and long-acting injectable (LAI) and oral atypical antipsychotic (OAA) efficacy on schizophrenia (SCZ) severity and cognitive impairment. METHODS Sixty Schizophrenia patients of 18-50 years and of either sex were included in a 12-week study. Thirty patients were recruited in each group, LAI and OAA. Positive and Negative Syndrome Scale (PANSS) and National Institute of Mental Health and Neuro-Sciences (NIMHANS) neuropsychological battery tests were evaluated at baseline and 12 weeks. TL was estimated at baseline. RESULTS Both groups showed a significant improvement in PANSS and NIMHANS battery test scores after treatment (p < 0.001) within the group, though not between the groups. Mean TL at baseline was 407.58 ± 143.93 and 443.40 ± 178.46 in LAI and OAA groups respectively. A significant negative correlation (r = -0.28, p = 0.03) of TL was seen with the mean change in negative PANSS score after treatment. CONCLUSIONS LAI antipsychotics are similar to OAA in decreasing the disorder severity and improving the cognitive impairment in schizophrenia. Also, patients who have shorter TL show greater improvement in the negative PANSS score. Hence, TL holds the potential of predicting antipsychotic drug response in schizophrenia patients.KEY POINTSLong-acting injectable antipsychotic was comparable to oral atypical antipsychotics in bringing out improvement in disorder severity, cognitive functions over 12 weeks.Shorter telomere length has been found to be associated with a greater response in negative symptoms of schizophrenia.
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Affiliation(s)
- Nisha Pippal
- Department of Pharmacology, University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi, India
| | - Sumita Halder
- Department of Pharmacology, University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi, India
| | - Shruti Srivastava
- Department of Psychiatry, University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi, India
| | - Rajarshi Kar
- Department of Biochemistry, University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi, India
| | - Rachna Gupta
- Department of Pharmacology, University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi, India
| | - Almeida Edelbert Anthonio
- Department of Biochemistry, University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi, India
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Schürhoff F, Corfdir C, Pignon B, Lajnef M, Richard JR, Marcos E, Leboyer M, Adnot S, Jamain S, Szöke A. Shortening telomere is associated with psychotic dimensions in the general population. Schizophr Res 2022; 243:470-471. [PMID: 35246364 DOI: 10.1016/j.schres.2022.02.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 02/18/2022] [Accepted: 02/19/2022] [Indexed: 10/19/2022]
Affiliation(s)
- Franck Schürhoff
- Univ Paris Est Creteil, INSERM, IMRB, AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, Fondation FondaMental, F-94010 Créteil, France
| | - Cécile Corfdir
- Univ Paris Est Creteil, INSERM, IMRB, AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, Fondation FondaMental, F-94010 Créteil, France
| | - Baptiste Pignon
- Univ Paris Est Creteil, INSERM, IMRB, AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, Fondation FondaMental, F-94010 Créteil, France
| | - Mohamed Lajnef
- Univ Paris Est Creteil, INSERM, IMRB, AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, Fondation FondaMental, F-94010 Créteil, France
| | - Jean-Romain Richard
- Univ Paris Est Creteil, INSERM, IMRB, AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, Fondation FondaMental, F-94010 Créteil, France
| | - Elisabeth Marcos
- INSERM U955, Département de Physiologie - Explorations fonctionnelles, Hôpital Henri Mondor, AP-HP, FHU SENEC, Créteil 94000, France
| | - Marion Leboyer
- Univ Paris Est Creteil, INSERM, IMRB, AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, Fondation FondaMental, F-94010 Créteil, France
| | - Serge Adnot
- INSERM U955, Département de Physiologie - Explorations fonctionnelles, Hôpital Henri Mondor, AP-HP, FHU SENEC, Créteil 94000, France
| | - Stéphane Jamain
- Univ Paris Est Creteil, INSERM, IMRB, AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, Fondation FondaMental, F-94010 Créteil, France
| | - Andreï Szöke
- Univ Paris Est Creteil, INSERM, IMRB, AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, Fondation FondaMental, F-94010 Créteil, France
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Navarro-Mateu F, Husky M, Cayuela-Fuentes P, Álvarez FJ, Roca-Vega A, Rubio-Aparicio M, Chirlaque MD, Cayuela ML, Martínez S, Sánchez-Meca J. The association of telomere length with substance use disorders: a systematic review and meta-analysis of observational studies. Addiction 2021; 116:1954-1972. [PMID: 33140537 DOI: 10.1111/add.15312] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 07/09/2020] [Accepted: 10/28/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND AIMS Several recent studies have investigated the relationship between telomere length and substance use disorders with inconsistent results. We aimed to assess this association and to identify moderators of the relationship. METHODS Systematic review and meta-analysis. Selection criteria were observational studies reporting telomere length in people with a substance use disorder compared with a control group. Studies focused solely on nicotine addiction, employing other study designs, and non-human studies were excluded. Study selection and data extraction were independently conducted by two researchers following a standardized protocol and included studies until December 2019. Standardized mean differences were used as the effect size index [d; 95% confidence interval (CI)] and random-effects models were used for the meta-analysis. Cochran's Q-statistic, I2 index, visual inspection of the forest plot and a 95% prediction interval were applied to verify study heterogeneity. Subgroup analyses and meta-regressions were conducted to explore heterogeneity. Small study effects were examined using the 'funnel plot', the Egger test, Duval & Tweedie's trim-and-fill method and the precision-effect test-precision-effect estimate with standard error (PET-PEESE) method. The risk of bias and the quality of evidence were assessed. RESULTS Ten studies (12 analysis units with 2671 cases and 4532 controls) met the selection criteria. An overall effect size of moderate magnitude was found (d+ = -0.63; 95% CI = -1.00 and -0.26; P = 0.0008). A potential small study effect was detected, as well as large heterogeneity between studies (Q-statistic P < 0.001, I2 = 97.3%). Selection of controls, reporting laboratory quality control procedures and total sample size significantly affected the effect size. The quality of the evidence was very low, based on risk of bias analysis and the grading of recommendations assessment, development and evaluation (GRADE) system. CONCLUSIONS People with substance use disorders appear to have shorter telomere length than controls; however, this finding should be interpreted with caution due to the poor quality of the evidence.
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Affiliation(s)
- Fernando Navarro-Mateu
- Servicio Murciano de Salud, Unidad de Docencia, Investigación y Formación en Salud Mental (UDIF-SM), 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
| | - Mathilde Husky
- Université de Bordeaux, Laboratoire de Psychologie EA4139, Bordeaux, France
| | - Pedro Cayuela-Fuentes
- Escuela Universitaria de Enfermería de Cartagena, University of Murcia, Murcia, Spain
| | - Francisco-Javier Álvarez
- Servicio Murciano de Salud, Unidad de Docencia, Investigación y Formación en Salud Mental (UDIF-SM), 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
- Grupo Telomerasa, Cáncer y Envejecimiento, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain.,CIBER de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Salvador Martínez
- Instituto de Neurociencias, UMH-CSIC, Alicante, Spain.,and CIBER de Salud Mental (CIBERSAM), Madrid, Spain
| | - Julio Sánchez-Meca
- Departamento de Psicología Básica y Metodología, University of Murcia, Murcia, Spain
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Schürhoff F, Corfdir C, Pignon B, Lajnef M, Richard JR, Marcos E, Pelissolo A, Leboyer M, Adnot S, Jamain S, Szöke A. No alteration of leukocyte telomere length in first episode psychosis. Psychiatry Res 2021; 301:113941. [PMID: 33945962 DOI: 10.1016/j.psychres.2021.113941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/12/2021] [Indexed: 12/29/2022]
Abstract
Both shorter telomeres and schizophrenia have been associated with a decrease in life expectancy. Furthermore, several studies found a shorter telomere length (TL) in schizophrenia. Understanding whether or not telomere shortening is directly related to pathophysiology of schizophrenia or is a consequence of a cumulative exposure to chronic stress is of major importance. Comparing the TL of subjects at the very beginning of the disease (FEP) and control subjects could help to decide between these two hypotheses. The aim of the present study was to compare TL between FEP subjects (N=91) and controls (N=137). After accounting for multiple potential confounders, no significant association was observed between FEP and TL. Our result is consistent with the hypothesis that psycho-social stress / adversities and stressful situations in people with schizophrenia affect TL rather than that telomere erosion contributes to the development of this disorder.
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Affiliation(s)
- Franck Schürhoff
- Univ Paris Est Creteil (UPEC), AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, INSERM, IMRB, translational Neuropsychiatry, Fondation FondaMental F-94010 Creteil, France.
| | - Cécile Corfdir
- Univ Paris Est Creteil (UPEC), AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, INSERM, IMRB, translational Neuropsychiatry, Fondation FondaMental F-94010 Creteil, France
| | - Baptiste Pignon
- Univ Paris Est Creteil (UPEC), AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, INSERM, IMRB, translational Neuropsychiatry, Fondation FondaMental F-94010 Creteil, France
| | - Mohamed Lajnef
- Univ Paris Est Creteil (UPEC), AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, INSERM, IMRB, translational Neuropsychiatry, Fondation FondaMental F-94010 Creteil, France
| | - Jean-Romain Richard
- Univ Paris Est Creteil (UPEC), AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, INSERM, IMRB, translational Neuropsychiatry, Fondation FondaMental F-94010 Creteil, France
| | - Elisabeth Marcos
- INSERM U955, Département de Physiologie - Explorations fonctionnelles, Hôpital Henri Mondor, AP-HP, FHU SENEC, Créteil, 94000, France
| | - Antoine Pelissolo
- Univ Paris Est Creteil (UPEC), AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, INSERM, IMRB, translational Neuropsychiatry, Fondation FondaMental F-94010 Creteil, France
| | - Marion Leboyer
- Univ Paris Est Creteil (UPEC), AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, INSERM, IMRB, translational Neuropsychiatry, Fondation FondaMental F-94010 Creteil, France
| | - Serge Adnot
- INSERM U955, Département de Physiologie - Explorations fonctionnelles, Hôpital Henri Mondor, AP-HP, FHU SENEC, Créteil, 94000, France
| | - Stephane Jamain
- Univ Paris Est Creteil (UPEC), AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, INSERM, IMRB, translational Neuropsychiatry, Fondation FondaMental F-94010 Creteil, France
| | - Andrei Szöke
- Univ Paris Est Creteil (UPEC), AP-HP, Hôpitaux Universitaires « H. Mondor », DMU IMPACT, INSERM, IMRB, translational Neuropsychiatry, Fondation FondaMental F-94010 Creteil, France
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Corfdir C, Pignon B, Szöke A, Schürhoff F. [Accelerated telomere erosion in schizophrenia: A literature review]. Encephale 2021; 47:369-375. [PMID: 33863507 DOI: 10.1016/j.encep.2020.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 11/30/2020] [Accepted: 12/02/2020] [Indexed: 11/28/2022]
Abstract
Schizophrenia is associated with a weighted average of 14.5 years of potential life lost according to a recent meta-analysis. This is partly explained by high rates of suicide and a high prevalence of non-psychiatric comorbidity (cardiovascular diseases, diabetes, cancers…). However, all these causes could not fully explain the loss of life expectancy in people suffering from schizophrenia. Life expectancy has been strongly correlated with telomere length (TL). Telomeres are noncoding structures consisting of DNA TTAGGG tandem repeats and associated proteins located at the end of the chromosomes. Their role is to help preserve genome stability by protecting chromosomal ends from the loss of genetic material. The progressive loss of telomeric material during cell divisions has led researchers to consider telomeres as molecular clocks that measure the number of divisions left until cellular death. The fact that both shorter telomeres and schizophrenia have been associated with a decrease in life expectancy has fueled the interest in the study of TL in schizophrenia. In this article, after a detailed review of the literature on the relationships between telomere length and schizophrenia, we discuss the different pathophysiological mechanisms which might explain this association. Based on this analysis, in the last part of the article we discuss potential research, therapeutic and prevention prospects. To date, the majority of the studies and meta-analyses found a decrease in TL in subjects with schizophrenia compared to control subjects. Conversely, all the studies exploring the TL in subjects suffering from first episode psychosis (FEP) have shown no significant difference from TL in control subjects. This suggests that excessive shortening of telomeres occurs during the course of the disease, thus it seems more probable that schizophrenia (or processes associated with it) affects TL rather than telomere erosion being a cause of the disorder. Several pathophysiological, non-mutually exclusive mechanisms have been proposed to explain the observed data. A first hypothesis to explain the acceleration of the physiological process of telomere erosion in schizophrenia is the activation of inflammation processes and oxidative stress as a consequence of schizophrenia per se. However, it seems more probable that reduced TL may be a result of cumulative exposure to chronic stress related to schizophrenia. Indeed, in healthy individuals a growing body of evidence has linked chronic stress to accelerated shortening of TL. This might explain why telomere erosion is too small to be detected in FEP patients who are younger and have a shorter duration of illness than subjects with schizophrenia. Based on these both explanations, telomere alterations may be considered as a biomarker of illness progression and might be useful for illness staging. Identifying processes associated with TL reduction might improve our understanding of the increased mortality and morbidity in schizophrenia, improve reliability of diagnosis, and hopefully suggest means for prevention and/or treatment. Treatments that prevent exposure and/or vulnerability to stressful life events that ameliorate schizophrenia may also prevent or decelerate telomere erosion. In this perspective, engaging subjects suffering from schizophrenia in a healthy diet and regular activity could be both promising strategies to protect telomere maintenance and improve health span at old age. In addition, the inflammatory process and oxidative stress involved in the physiopathology in at least a subgroup of subjects with schizophrenia could also be responsible for telomere erosion. Thus, an efficient anti-inflammatory therapeutic approach that targets these specific pathways could be of interest in this subgroup to limit telomere erosion. Mindfulness-based stress reduction (MBSR) therapies have been shown to reduce telomere erosion by increasing telomerase activity, although these psychological therapies should be used carefully in psychosis. Finally, advancing our understanding of the relationship between stress, inflammation and TL is of great interest for psychiatric research and for understanding stress effects in this population.
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Affiliation(s)
- C Corfdir
- DMU IMPACT, Inserm, IMRB, translational Neuropsychiatry, Fondation FondaMental, hôpitaux universitaires « H. Mondor », université Paris Est Creteil (UPEC), Assistance publique-Hôpitaux de Paris (AP-HP), 94010 Creteil, France
| | - B Pignon
- DMU IMPACT, Inserm, IMRB, translational Neuropsychiatry, Fondation FondaMental, hôpitaux universitaires « H. Mondor », université Paris Est Creteil (UPEC), Assistance publique-Hôpitaux de Paris (AP-HP), 94010 Creteil, France
| | - A Szöke
- DMU IMPACT, Inserm, IMRB, translational Neuropsychiatry, Fondation FondaMental, hôpitaux universitaires « H. Mondor », université Paris Est Creteil (UPEC), Assistance publique-Hôpitaux de Paris (AP-HP), 94010 Creteil, France
| | - F Schürhoff
- DMU IMPACT, Inserm, IMRB, translational Neuropsychiatry, Fondation FondaMental, hôpitaux universitaires « H. Mondor », université Paris Est Creteil (UPEC), Assistance publique-Hôpitaux de Paris (AP-HP), 94010 Creteil, France.
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Muneer A, Minhas FA. Telomere Biology in Mood Disorders: An Updated, Comprehensive Review of the Literature. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2019; 17:343-363. [PMID: 31352701 PMCID: PMC6705109 DOI: 10.9758/cpn.2019.17.3.343] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 03/28/2019] [Accepted: 04/15/2019] [Indexed: 12/19/2022]
Abstract
Major psychiatric disorders are linked to early mortality and patients afflicted with these ailments demonstrate an increased risk of developing physical diseases that are characteristically seen in the elderly. Psychiatric conditions like major depressive disorder, bipolar disorder and schizophrenia may be associated with accelerated cellular aging, indicated by shortened leukocyte telomere length (LTL), which could underlie this connection. Telomere shortening occurs with repeated cell division and is reflective of a cell’s mitotic history. It is also influenced by cumulative exposure to inflammation and oxidative stress as well as the availability of telomerase, the telomere-lengthening enzyme. Precariously short telomeres can cause cells to undergo senescence, apoptosis or genomic instability; shorter LTL correlates with compromised general health and foretells mortality. Important data specify that LTL may be reduced in principal psychiatric illnesses, possibly in proportion to exposure to the ailment. Telomerase, as measured in peripheral blood monocytes, has been less well characterized in psychiatric illnesses, but a role in mood disorder has been suggested by preclinical and clinical studies. In this manuscript, the most recent studies on LTL and telomerase activity in mood disorders are comprehensively reviewed, potential mediators are discussed, and future directions are suggested. An enhanced comprehension of cellular aging in psychiatric illnesses could lead to their re-conceptualizing as systemic ailments with manifestations both inside and outside the brain. At the same time this paradigm shift could identify new treatment targets, helpful in bringing about lasting cures to innumerable sufferers across the globe.
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Affiliation(s)
- Ather Muneer
- Department of Psychiatry, Islamic International Medical College, Riphah International University, Rawalpindi, Pakistan
| | - Fareed Aslam Minhas
- Department of Psychiatry, WHO Collaborating Center, Rawalpindi Medical University, Rawalpindi, Pakistan
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Monroy-Jaramillo N, Dyukova E, Walss-Bass C. Telomere length in psychiatric disorders: Is it more than an ageing marker? World J Biol Psychiatry 2019; 19:S2-S20. [PMID: 28000540 DOI: 10.1080/15622975.2016.1273550] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
OBJECTIVES Psychiatric and substance-use disorders have been associated with premature biological ageing. Telomere length (TL), considered an ageing marker, has been analysed in psychiatric disorders, and to a lesser extent in substance-use disorders, with recent findings suggesting TL may be related to disease pathology. METHODS We conducted a critical and non-systematic literature search of TL studies published up to June 2016 in psychiatric and substance-use disorders, focussing on studies describing mechanisms, including studies linking telomere biology with genetic factors, stress and mitochondrial alterations (104 studies selected). RESULTS Patients with major depressive disorder and anxiety appear to have shorter leukocyte telomeres compared to controls. Inconclusive results are found for other psychiatric disorders and for substance-use disorders. This may be due in part to differences in medication treatment and response, as studies suggest that some psychotropic medications may modulate TL. Importantly, some studies establish a relationship between telomere machinery, stress and mitochondria function in psychiatric and substance-use disorders. CONCLUSIONS While further longitudinal studies considering telomere genetics are needed to clarify the cause-effect link between telomeres and mitochondria function in psychiatric and substance-use disorders, the recent findings linking these biological processes suggest that telomeres may be more than ageing markers.
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Affiliation(s)
- Nancy Monroy-Jaramillo
- a Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences , McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth) , Houston , TX , USA.,b Department of Genetics , National Institute of Neurology and Neurosurgery, Manuel Velasco Suarez , Mexico City , Mexico
| | - Elena Dyukova
- a Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences , McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth) , Houston , TX , USA
| | - Consuelo Walss-Bass
- a Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences , McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth) , Houston , TX , USA
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11
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Shivakumar V, Kalmady SV, Rajasekaran A, Chhabra H, Anekal AC, Narayanaswamy JC, Ravi V, Gangadhar BN, Venkatasubramanian G. Telomere length and its association with hippocampal gray matter volume in antipsychotic-naïve/free schizophrenia patients. Psychiatry Res Neuroimaging 2018; 282:11-17. [PMID: 30384145 DOI: 10.1016/j.pscychresns.2018.10.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 10/15/2018] [Accepted: 10/15/2018] [Indexed: 12/21/2022]
Abstract
Accelerated ageing processes are postulated to underlie schizophrenia pathogenesis. This postulate is supported by observations of reduced telomere length in schizophrenia patients. Hippocampus, one of the most important brain regions implicated in schizophrenia, is shown to atrophy at a faster rate in aging. In this study, telomere length (TL) was measured in 30 antipsychotic-naive/free schizophrenia patients and 60 healthy controls using quantitative PCR assay. Hippocampus volume was measured using voxel-based morphometry. Schizophrenia was associated with differential TL between sexes [Status × Sex; F(1,85) = 5.9, p = 0.017, η2 = 0.065]. Male schizophrenia patients had significantly lower relative TL than female patients [F(1,85) = 7.38, p = 0.008], while such sex difference was not observed in healthy controls [F(1,85) = 0.16, p = 0.69]. Schizophrenia patients showed a significant sex-by-telomere interaction with both right & left hippocampus, with male patients showing positive association of telomere length with volume, while female patients showed negative association. Telomere shortening and the positive association of telomere length with hippocampus volume was observed only in male patients with schizophrenia. Since correlational observations in this cross-sectional study does not necessarily support definitive causal relationship, further longitudinal studies examining hippocampus volume and telomere in schizophrenia patients are needed.
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Affiliation(s)
- Venkataram Shivakumar
- The Schizophrenia Clinic, Department of Psychiatry & Translational Psychiatry Laboratory, Neurobiology Research Centre, National Institute of Mental Health and Neurosciences, Bangalore 560029, India
| | - Sunil V Kalmady
- The Schizophrenia Clinic, Department of Psychiatry & Translational Psychiatry Laboratory, Neurobiology Research Centre, National Institute of Mental Health and Neurosciences, Bangalore 560029, India
| | - Ashwini Rajasekaran
- The Schizophrenia Clinic, Department of Psychiatry & Translational Psychiatry Laboratory, Neurobiology Research Centre, National Institute of Mental Health and Neurosciences, Bangalore 560029, India
| | - Harleen Chhabra
- The Schizophrenia Clinic, Department of Psychiatry & Translational Psychiatry Laboratory, Neurobiology Research Centre, National Institute of Mental Health and Neurosciences, Bangalore 560029, India
| | - Amaresha C Anekal
- The Schizophrenia Clinic, Department of Psychiatry & Translational Psychiatry Laboratory, Neurobiology Research Centre, National Institute of Mental Health and Neurosciences, Bangalore 560029, India
| | - Janardhanan C Narayanaswamy
- The Schizophrenia Clinic, Department of Psychiatry & Translational Psychiatry Laboratory, Neurobiology Research Centre, National Institute of Mental Health and Neurosciences, Bangalore 560029, India
| | - Vasanthapuram Ravi
- The Schizophrenia Clinic, Department of Psychiatry & Translational Psychiatry Laboratory, Neurobiology Research Centre, National Institute of Mental Health and Neurosciences, Bangalore 560029, India
| | - Bangalore N Gangadhar
- The Schizophrenia Clinic, Department of Psychiatry & Translational Psychiatry Laboratory, Neurobiology Research Centre, National Institute of Mental Health and Neurosciences, Bangalore 560029, India
| | - Ganesan Venkatasubramanian
- The Schizophrenia Clinic, Department of Psychiatry & Translational Psychiatry Laboratory, Neurobiology Research Centre, National Institute of Mental Health and Neurosciences, Bangalore 560029, India.
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12
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Gielen M, Hageman GJ, Antoniou EE, Nordfjall K, Mangino M, Balasubramanyam M, de Meyer T, Hendricks AE, Giltay EJ, Hunt SC, Nettleton JA, Salpea KD, Diaz VA, Farzaneh-Far R, Atzmon G, Harris SE, Hou L, Gilley D, Hovatta I, Kark JD, Nassar H, Kurz DJ, Mather KA, Willeit P, Zheng YL, Pavanello S, Demerath EW, Rode L, Bunout D, Steptoe A, Boardman L, Marti A, Needham B, Zheng W, Ramsey-Goldman R, Pellatt AJ, Kaprio J, Hofmann JN, Gieger C, Paolisso G, Hjelmborg JBH, Mirabello L, Seeman T, Wong J, van der Harst P, Broer L, Kronenberg F, Kollerits B, Strandberg T, Eisenberg DTA, Duggan C, Verhoeven JE, Schaakxs R, Zannolli R, dos Reis RMR, Charchar FJ, Tomaszewski M, Mons U, Demuth I, Iglesias Molli AE, Cheng G, Krasnienkov D, D'Antono B, Kasielski M, McDonnell BJ, Ebstein RP, Sundquist K, Pare G, Chong M, Zeegers MP. Body mass index is negatively associated with telomere length: a collaborative cross-sectional meta-analysis of 87 observational studies. Am J Clin Nutr 2018; 108:453-475. [PMID: 30535086 PMCID: PMC6454526 DOI: 10.1093/ajcn/nqy107] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 04/27/2018] [Indexed: 12/12/2022] Open
Abstract
Background Even before the onset of age-related diseases, obesity might be a contributing factor to the cumulative burden of oxidative stress and chronic inflammation throughout the life course. Obesity may therefore contribute to accelerated shortening of telomeres. Consequently, obese persons are more likely to have shorter telomeres, but the association between body mass index (BMI) and leukocyte telomere length (TL) might differ across the life span and between ethnicities and sexes. Objective A collaborative cross-sectional meta-analysis of observational studies was conducted to investigate the associations between BMI and TL across the life span. Design Eighty-seven distinct study samples were included in the meta-analysis capturing data from 146,114 individuals. Study-specific age- and sex-adjusted regression coefficients were combined by using a random-effects model in which absolute [base pairs (bp)] and relative telomere to single-copy gene ratio (T/S ratio) TLs were regressed against BMI. Stratified analysis was performed by 3 age categories ("young": 18-60 y; "middle": 61-75 y; and "old": >75 y), sex, and ethnicity. Results Each unit increase in BMI corresponded to a -3.99 bp (95% CI: -5.17, -2.81 bp) difference in TL in the total pooled sample; among young adults, each unit increase in BMI corresponded to a -7.67 bp (95% CI: -10.03, -5.31 bp) difference. Each unit increase in BMI corresponded to a -1.58 × 10(-3) unit T/S ratio (0.16% decrease; 95% CI: -2.14 × 10(-3), -1.01 × 10(-3)) difference in age- and sex-adjusted relative TL in the total pooled sample; among young adults, each unit increase in BMI corresponded to a -2.58 × 10(-3) unit T/S ratio (0.26% decrease; 95% CI: -3.92 × 10(-3), -1.25 × 10(-3)). The associations were predominantly for the white pooled population. No sex differences were observed. Conclusions A higher BMI is associated with shorter telomeres, especially in younger individuals. The presently observed difference is not negligible. Meta-analyses of longitudinal studies evaluating change in body weight alongside change in TL are warranted.
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Affiliation(s)
- Marij Gielen
- Departments of Complex Genetics,Address correspondence to MG (e-mail: )
| | - Geja J Hageman
- Toxicology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht University, Netherlands
| | - Evangelia E Antoniou
- Department of Clinical Psychological Science, Faculty of Psychology and Neuroscience, Maastricht University, Netherlands
| | | | - Massimo Mangino
- Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom,NIHR Biomedical Research Center at Guy's and St. Thomas’ Foundation Trust, London, United Kingdom
| | | | - Tim de Meyer
- Department of Mathematical Modeling, Statistics, and Bioinformatics, Ghent University, Ghent, Belgium
| | - Audrey E Hendricks
- Population Sciences Branch of the National Heart, Lung, and Blood Institute (NHLBI), NIH, NHLBI's Framingham Heart Study, Framingham, MA,Department of Mathematical and Statistical Sciences, University of Colorado–Denver, Denver, CO
| | - Erik J Giltay
- Department of Psychiatry, Leiden University Medical Center, Leiden, Netherlands
| | - Steven C Hunt
- Cardiovascular Genetics Division, Department of Medicine, University of Utah, Salt Lake City, UT
| | - Jennifer A Nettleton
- Division of Epidemiology, Human Genetics, and Environmental Sciences, University of Texas Health Science Center, Houston, TX
| | - Klelia D Salpea
- Department of Molecular Biology and Genetics, BSRC “Alexander Fleming,” Athens, Greece
| | - Vanessa A Diaz
- Department of Family Medicine, Medical University of South Carolina, Charleston, SC
| | - Ramin Farzaneh-Far
- Division of Cardiology, San Francisco General Hospital, San Francisco, CA
| | - Gil Atzmon
- Department of Medicine and Genetics, Albert Einstein College of Medicine, Bronx, NY, and Department of Biology, Faculty of Natural Science, University of Haifa, Haifa, Israel
| | - Sarah E Harris
- Center for Cognitive Aging and Cognitive Epidemiology and Medical Genetics Section and Center for Genomics and Experimental Medicine and MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Lifang Hou
- Department of Preventive Medicine and Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - David Gilley
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN
| | - Iiris Hovatta
- Department of Biosciences, University of Helsinki, Helsinki, Finland,Department of Health, National Institute for Health and Welfare, Helsinki, Finland
| | - Jeremy D Kark
- Epidemiology Unit, Hebrew University–Hadassah School of Public Health and Community Medicine, Jerusalem, Israel
| | - Hisham Nassar
- Department of Cardiology, Hadassah University Medical Center, Jerusalem, Israel
| | - David J Kurz
- Department of Cardiology, Triemli Hospital, Zurich, Switzerland
| | - Karen A Mather
- Centre for Healthy Brain Ageing, Psychiatry, UNSW Australia, Sydney, Australia
| | - Peter Willeit
- Department of Neurology, Medical University Innsbruck, Innsbruck, Austria, and Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Yun-Ling Zheng
- Department of Oncology, Georgetown University Medical Center, Georgetown University, Washington, DC
| | - Sofia Pavanello
- Department of Cardiac, Thoracic, and Vascular Sciences, Unit of Occupational Medicine, University of Padova, Padova, Italy
| | - Ellen W Demerath
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, MN
| | - Line Rode
- The Copenhagen General Population Study, Department of Clinical Biochemistry, Copenhagen University Hospital, Herlev and Gentofte Hospital, Copenhagen, Denmark
| | - Daniel Bunout
- Institute of Nutrition and Food Technology University of Chile, Santiago, Chile
| | - Andrew Steptoe
- Department of Epidemiology and Public Health, University College London, London, United Kingdom
| | - Lisa Boardman
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, MN
| | - Amelia Marti
- Department of Nutrition, Food Science, and Physiology, University of Navarra, Pamplona, Spain,Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain,CIBER Fisiopatología de la Obesidad y Nutrición, (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - Belinda Needham
- Department of Epidemiology, University of Michigan, Ann Arbor, MI
| | - Wei Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN
| | | | | | - Jaakko Kaprio
- Department of Public Health,Institute for Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Jonathan N Hofmann
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD
| | - Christian Gieger
- Research Unit of Molecular Epidemiology and Institute of Epidemiology II, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Giuseppe Paolisso
- Department of Medical, Surgical, Neurological, Metabolic, and Geriatric Sciences, Second University of Naples, Naples, Italy
| | - Jacob B H Hjelmborg
- Department of Epidemiology, Biostatistics, and Biodemography, Institute of Public Health, University of Southern Denmark, Odense C, Denmark
| | - Lisa Mirabello
- Department of Medical, Surgical, Neurological, Metabolic, and Geriatric Sciences, Second University of Naples, Naples, Italy
| | - Teresa Seeman
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Jason Wong
- Stanford University School of Medicine, Stanford, CA
| | - Pim van der Harst
- Department of Cardiology, University Medical Center Groningen, Groningen, Netherlands
| | - Linda Broer
- Department of Internal Medicine, Erasmus MC, Rotterdam, Netherlands
| | - Florian Kronenberg
- Division of Genetic Epidemiology, Department of Medical Genetics, Molecular, and Clinical Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
| | - Barbara Kollerits
- Division of Genetic Epidemiology, Department of Medical Genetics, Molecular, and Clinical Pharmacology, Medical University of Innsbruck, Innsbruck, Austria
| | - Timo Strandberg
- University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland; Center for Life Course Epidemiology, University of Oulu, Oulu, Finland
| | - Dan T A Eisenberg
- Department of Anthropology and Center for Studies in Demography and Ecology, University of Washington, Seattle, WA
| | | | - Josine E Verhoeven
- Department of Psychiatry, VU University Medical Center, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
| | - Roxanne Schaakxs
- Department of Psychiatry, VU University Medical Center, Amsterdam Public Health Research Institute, Amsterdam, Netherlands
| | - Raffaela Zannolli
- Pediatrics Unit, Azienda Ospedaliera Universitaria, Senese/University of Siena, Policlinico Le Scotte, Siena, Italy
| | - Rosana M R dos Reis
- Department of Gynecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fadi J Charchar
- School of Science and Technology, Federation University Australia, Department of Physiology, University of Melbourne, Melbourne, Australia, and Department of Cardiovascular Sciences, University of Leicester, Leicester, United Kingdom
| | - Maciej Tomaszewski
- Division of Cardiovascular Sciences, Faculty of Medicine, Biology, and Health, University of Manchester, Manchester, United Kingdom,Division of Medicine, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Ute Mons
- Division of Clinical Epidemiology and Aging Research,Cancer Prevention Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ilja Demuth
- Charité–Universitätsmedizin Berlin (corporate member of Freie Universität Berlin), Humboldt-Universität zu Berlin, and Berlin Institute of Health, Lipid Clinic at the Interdisciplinary Metabolism Center, Berlin, Germany
| | - Andrea Elena Iglesias Molli
- CONICET-Universidad de Buenos Aires. Instituto de Inmunología, Genética y Metabolismo (INIGEM). Laboratorio de Diabetes y Metabolismo, Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Guo Cheng
- Department of Nutrition, Food Safety, and Toxicology, West China School of Public Health, Sichuan University, Chengdu, China
| | - Dmytro Krasnienkov
- Department of Epigenetics, DF Chebotarev State Institute of Gerontology NAMS of Ukraine, Kyiv, Ukraine
| | - Bianca D'Antono
- Research Center, Montreal Heart Institute, and Psychology Department, University of Montreal, Montreal, Quebec, Canada
| | - Marek Kasielski
- Bases of Clinical Medicine Teaching Center, Medical University of Lodz, Lodz, Poland
| | - Barry J McDonnell
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, United Kingdom
| | | | - Kristina Sundquist
- Center for Primary Health Care Research, Lund University, Region Skåne, Lund, Sweden
| | - Guillaume Pare
- Population Health Research Institute and McMaster University, Hamilton, Canada
| | - Michael Chong
- Population Health Research Institute and McMaster University, Hamilton, Canada
| | - Maurice P Zeegers
- Departments of Complex Genetics,CAPHRI School for Public Health and Primary Care, Maastricht University, Maastricht, Netherlands
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13
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Riley G, Perrin M, Vaez-Azizi LM, Ruby E, Goetz RR, Dracxler R, Walsh-Messinger J, Keefe DL, Buckley PF, Szeszko PR, Malaspina D. Telomere length and early trauma in schizophrenia. Schizophr Res 2018; 199:426-430. [PMID: 29618413 PMCID: PMC8787687 DOI: 10.1016/j.schres.2018.02.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/25/2018] [Accepted: 02/26/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Childhood trauma is emerging as a risk factor for schizophrenia, but its mechanism with respect to etiology is unknown. One possible pathway is through leucocyte telomere length (LTL) shortening, a measure of cellular aging associated with trauma. This study examined early trauma and LTL shortening in schizophrenia and considered sex effects. METHODS The early trauma inventory (ETI) was administered to 48 adults with DSM-5 schizophrenia and 18 comparison participants. LTL was measured using qPCR. OUTCOMES Cases had significantly more global trauma (F=4.10, p<0.01) and traumatic events (F=11.23, p<0.001), but case and control groups had similar LTL (1.91±0.74 and 1.83±0.62: p=0.68). The association of early trauma and LTL differed by sex in cases and controls (Fisher's R: Z<0.05). Significant negative associations were shown in male cases and, conversely, in female controls. For example, physical punishment was associated LTL shortening in males' cases (r=-0.429, p<01). Only female controls showed significant telomere shortening in association with early trauma. INTERPRETATION This data confirms the substantial excess of early trauma among schizophrenia cases. There were significant sex-differences in the relationship of the trauma to LTL, with only male cases showing the expected shortening. There were converse sex effects in the control group. Mean LTL was notably similar in cases and controls, despite the trauma-related shortening in male cases, cigarette smoking, older age and chronic illness of the cases. Factors may lengthen LTL in some schizophrenia cases. The converse sex differences in the cases are consistent with findings defective sexual differentiation in schizophrenia, consistent with other findings in the field.
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Affiliation(s)
- Gabriella Riley
- Department of Psychiatry, New York University, 1 Park Avenue, 8th Floor Room 222, New York, NY 10016, USA
| | - Mary Perrin
- Department of Psychiatry, New York University, 1 Park Avenue, 8th Floor Room 222, New York, NY 10016, USA
| | - Leila M. Vaez-Azizi
- Department of Psychiatry, New York University, 1 Park Avenue, 8th Floor Room 222, New York, NY 10016, USA
| | - Eugene Ruby
- Department of Psychology, Cognitive Neuroscience, University of California, Los Angeles, USA
| | - Raymond R. Goetz
- New York State Psychiatric Institute at Columbia University, Columbia University Department of Psychiatry, 1051 Riverside Drive, New York, NY 10032, USA
| | - Roberta Dracxler
- Department of Psychiatry, New York University, 1 Park Avenue, 8th Floor Room 222, New York, NY 10016, USA,Department of Obstetrics and Gynecology, New York University School of Medicine, New York, NY 10016, USA
| | - Julie Walsh-Messinger
- Department of Psychology, University of Dayton, Dayton, OH, USA,Department of Psychiatry, Wright State University Boonshoft School of Medicine, Dayton, OH, USA
| | - David L. Keefe
- Department of Obstetrics and Gynecology, New York University School of Medicine, New York, NY 10016, USA
| | - Peter F. Buckley
- Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA
| | - Philip R. Szeszko
- James J. Peters VA Medical Center, Bronx, NY, USA,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Dolores Malaspina
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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14
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Zhang Y, Hishimoto A, Otsuka I, Watanabe Y, Numata S, Yamamori H, Boku S, Horai T, Someya T, Ohmori T, Hashimoto R, Sora I. Longer telomeres in elderly schizophrenia are associated with long-term hospitalization in the Japanese population. J Psychiatr Res 2018; 103:161-166. [PMID: 29870917 DOI: 10.1016/j.jpsychires.2018.05.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 04/25/2018] [Accepted: 05/20/2018] [Indexed: 01/09/2023]
Abstract
Several previous studies have investigated an association between leukocyte telomere length (LTL) and schizophrenia (SCZ). However, results have been largely inconsistent, partially due to the relatively small sample sizes in each study and heterogeneity caused by various uncontrolled confounders (e.g., duration of illness or hospitalization, lifetime antipsychotic dose, and LTL assay methods). Here, we investigate the association of LTL with SCZ with the quantitative polymerase chain reaction method in independent cohorts consisting of 1241 patients with SCZ and 1042 controls (the largest independent sample in this field). Furthermore, we examined whether duration of hospitalization and lifetime antipsychotic dose had an effect on LTL in SCZ. In all samples, we observed significantly longer LTL in patients with SCZ relative to controls. In subgroup analyses, we observed that longer telomeres in SCZ were only visible in elderly patients and not in patients under 50 years old. Moreover, significantly longer LTL in elderly patients with SCZ was only specific to those with long-term hospitalization, but not outpatients or those with short-term hospitalization. This may be because the former received more appropriate lifestyle management. Meanwhile, lifetime antipsychotic dose had no effect on LTL. Our findings suggest that consideration of the effect of age and duration of hospitalization on LTL may improve our understanding of controversial results obtained in previous studies of telomeres in SCZ.
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Affiliation(s)
- Yuan Zhang
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Akitoyo Hishimoto
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - Ikuo Otsuka
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yuichiro Watanabe
- Department of Psychiatry, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Shusuke Numata
- Department of Psychiatry, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Hidenaga Yamamori
- Department of Psychiatry, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Shuken Boku
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tadasu Horai
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Toshiyuki Someya
- Department of Psychiatry, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tetsuro Ohmori
- Department of Psychiatry, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Ryota Hashimoto
- Department of Psychiatry, Graduate School of Medicine, Osaka University, Osaka, Japan; Molecular Research Center for Children's Mental Development, United Graduate School of Child Development, Osaka University, Osaka, Japan
| | - Ichiro Sora
- Department of Psychiatry, Kobe University Graduate School of Medicine, Kobe, Japan
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15
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Pawełczyk T, Grancow-Grabka M, Trafalska E, Szemraj J, Żurner N, Pawełczyk A. Telomerase level increase is related to n-3 polyunsaturated fatty acid efficacy in first episode schizophrenia: Secondary outcome analysis of the OFFER randomized clinical trial. Prog Neuropsychopharmacol Biol Psychiatry 2018; 83:142-148. [PMID: 29241838 DOI: 10.1016/j.pnpbp.2017.12.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 12/09/2017] [Accepted: 12/10/2017] [Indexed: 11/17/2022]
Abstract
Schizophrenia is associated with shortening of the lifespan mainly due to cardiovascular events, cancer and chronic obstructive pulmonary disease. Both telomere attrition and decrease of telomerase levels were observed in schizophrenia. Polyunsaturated fatty acids (PUFA) influence multiple biochemical mechanisms which are postulated to accelerate telomere shortening and limit the longevity of patients with schizophrenia. Intervention studies based on add-on therapy with n-3 polyunsaturated fatty acids (n-3 PUFA) in patients with schizophrenia did not assess the changes in telomerase levels. A randomized placebo-controlled trial named OFFER was designed to compare the efficacy of a 26-week intervention composed of either 2.2g/day of n-3 PUFA or olive oil placebo with regard to symptom severity in first-episode schizophrenia patients. The secondary outcome measure of the study was to describe the association between the clinical effect of n-3 PUFA and changes in telomerase levels. Seventy-one patients aged 16-35 were enrolled in the study and randomly assigned to the study arms. The Positive and Negative Syndrome Scale (PANSS) was used to assess the change in symptom severity. Telomerase levels of peripheral blood mononuclear cells (PBMC) were assessed at three points: at baseline and at weeks 8 and 26 of the intervention. A significantly greater increase in PBMC telomerase levels in the intervention group compared to placebo was observed (p<0.001). Changes in telomerase levels significantly and inversely correlated with improvement in depressive symptoms and severity of the illness. The efficacy of a six-month intervention with n-3 PUFA observed in first-episode schizophrenia may be related to an increase in telomerase levels.
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Affiliation(s)
- Tomasz Pawełczyk
- Department of Affective and Psychotic Disorders, Medical University of Lodz, ul. Czechoslowacka 8/10, 92-216 Lodz, Poland.
| | - Marta Grancow-Grabka
- Child and Adolescent Psychiatry Unit, Central Teaching Hospital, Medical University of Lodz, ul. Pomorska 251, 92-213 Lodz, Poland
| | - Elżbieta Trafalska
- Department of Nutrition Hygiene and Epidemiology, Medical University of Lodz, ul. Jaracza 63, 90-251 Lodz, Poland.
| | - Janusz Szemraj
- Department of Medical Biochemistry, Medical University of Lodz, ul. Mazowiecka 6/8, 92-215 Lodz, Poland.
| | - Natalia Żurner
- Child and Adolescent Psychiatry Unit, Central Teaching Hospital, Medical University of Lodz, ul. Pomorska 251, 92-213 Lodz, Poland
| | - Agnieszka Pawełczyk
- Department of Affective and Psychotic Disorders, Medical University of Lodz, ul. Czechoslowacka 8/10, 92-216 Lodz, Poland.
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16
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Vakonaki E, Tsiminikaki K, Plaitis S, Fragkiadaki P, Tsoukalas D, Katsikantami I, Vaki G, Tzatzarakis MN, Spandidos DA, Tsatsakis AM. Common mental disorders and association with telomere length. Biomed Rep 2018; 8:111-116. [PMID: 29435268 PMCID: PMC5778888 DOI: 10.3892/br.2018.1040] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 01/08/2018] [Indexed: 12/12/2022] Open
Abstract
Telomeres are repeated 5′-TTAGGG-3′ sequences at the end of chromosomes, which maintain genomic stability. Their length is related to a number of diseases that affect humans. Apart from cancer, cardiovascular diseases, diabetes and other, telomere length has been associated with chronic diseases. Chronic mental illness includes various types of mental disorders with the most common being depression, schizophrenia and stress-anxiety. The aim of this review is to summarize the current state of knowledge on the role of telomeres in these disorders and to compare telomere length variations in patients receiving medication and patients not taking treatment. Most studies report reduced telomere length in patients suffering from mental disorders, compared to the general population. Since the factors that can affect telomere length are various, more experiments and investigations are required to understand the general impact of different factors on telomere length.
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Affiliation(s)
- E Vakonaki
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - K Tsiminikaki
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - S Plaitis
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - P Fragkiadaki
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - D Tsoukalas
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - I Katsikantami
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - G Vaki
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - M N Tzatzarakis
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - D A Spandidos
- Laboratory of Clinical Virology, Medical School, University of Crete, 71409 Heraklion, Crete, Greece
| | - A M Tsatsakis
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
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17
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Maurya PK, Rizzo LB, Xavier G, Tempaku PF, Ota VK, Santoro ML, Spíndola LM, Moretti PS, Mazzotti DR, Gadelha A, Gouvea ES, Noto C, Maes M, Cordeiro Q, Bressan RA, Brietzke E, Belangero SI. Leukocyte telomere length variation in different stages of schizophrenia. J Psychiatr Res 2018; 96:218-223. [PMID: 29102816 DOI: 10.1016/j.jpsychires.2017.10.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 10/14/2017] [Accepted: 10/18/2017] [Indexed: 01/06/2023]
Abstract
Recent research has demonstrated that telomere maintenance might be a key integrating point for the cumulative effect of genetic and environmental factors in patients with first-episode psychosis (FEP) and schizophrenia (SCZ). Eighty-one participants with antipsychotic-naïve FEP, 173 with SCZ and 438 HC were enrolled in this study. Psychiatric diagnosis was assessed using the Semi-Structured Clinical Interview for DSM-IV Axis-I (SCID-I). The Positive and Negative Syndrome Scale (PANSS), Young Mania Rating Scale (YMRS) and Calgary Depression Scale for Schizophrenia (CDSS) were used to measure symptoms severity. Telomere length (TL) was determined using a multiplex qPCR assay. After adjustment for age, years of education, and smoking status, we found that patients with SCZ had longer TL (relative ratio (RR) = 1.08) than the HC group (RR = 1.00, Wald χ2 = 12.48, p = 0.002). Further, non-remitted SCZ patients presented longer TL (RR = 1.00) compared to remitted SCZ (RR = 0.88, Wald χ2 = 7.20, p = 0.007). TL in patients also correlated to psychopathology assessment in terms of total (p = 0.003) and positive PANSS scores (p = 0.001). No correlation with negative PANSS, YMRS, and CDSS or effects of medication was found on TL. Although the exact pathways underlying longer TL in SCZ patients remain unclear, these findings raise more questions than answers and suggest that TL may be of immense value on SCZ progression. Further studies are required to investigate the association of TL in FEP and SCZ.
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Affiliation(s)
- Pawan Kumar Maurya
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Amity Institute of Biotechnology, Amity University Uttar Pradesh, Noida, India
| | - Lucas Bortolotto Rizzo
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Research Group on Behavioural and Molecular Neuroscience of Bipolar Disorder, São Paulo, Brazil
| | - Gabriela Xavier
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Departament of Morphology and Genetics, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
| | - Priscila Farias Tempaku
- Departament of Psychobiology, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
| | - Vanessa Kiyomi Ota
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Departament of Morphology and Genetics, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
| | - Marcos L Santoro
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Departament of Morphology and Genetics, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
| | - Letícia M Spíndola
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Departament of Morphology and Genetics, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
| | - Patrícia S Moretti
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Program for Recognition and Intervention in Individuals in At-Risk Mental States (PRISMA), São Paulo, Brazil; Departament of Morphology and Genetics, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil
| | - Diego R Mazzotti
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, United States
| | - Ary Gadelha
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Program for Recognition and Intervention in Individuals in At-Risk Mental States (PRISMA), São Paulo, Brazil
| | - Eduardo S Gouvea
- Department of Psychiatry, Santa Casa de Misericórdia de São Paulo, São Paulo, Brazil
| | - Cristiano Noto
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Program for Recognition and Intervention in Individuals in At-Risk Mental States (PRISMA), São Paulo, Brazil
| | - Michael Maes
- Graduation Program in Health Sciences, Universidade Estadual de Londrina, Londrina, PR, Brazil; Department of Psychiatry, Chulalongkorn University, Bangkok, Thailand
| | - Quirino Cordeiro
- Department of Psychiatry, Santa Casa de Misericórdia de São Paulo, São Paulo, Brazil
| | - Rodrigo A Bressan
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Program for Recognition and Intervention in Individuals in At-Risk Mental States (PRISMA), São Paulo, Brazil
| | - Elisa Brietzke
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Research Group on Behavioural and Molecular Neuroscience of Bipolar Disorder, São Paulo, Brazil; Program for Recognition and Intervention in Individuals in At-Risk Mental States (PRISMA), São Paulo, Brazil
| | - Sintia Iole Belangero
- Interdisciplinary Laboratory for Clinical Neuroscience (LiNC), Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil; Departament of Morphology and Genetics, Universidade Federal de São Paulo (Unifesp), São Paulo, Brazil.
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18
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Monroy-Jaramillo N, Rodríguez-Agudelo Y, Aviña-Cervantes LC, Roberts DL, Velligan DI, Walss-Bass C. Leukocyte telomere length in Hispanic schizophrenia patients under treatment with olanzapine. J Psychiatr Res 2017; 90:26-30. [PMID: 28226264 DOI: 10.1016/j.jpsychires.2017.02.007] [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: 09/15/2016] [Accepted: 02/06/2017] [Indexed: 11/27/2022]
Abstract
Different lines of evidence indicate that patients with schizophrenia (SZ) exhibit accelerated aging. Leukocyte telomere length (TL), an aging marker, is associated with age-related and chronic pathologies, including schizophrenia. We analyzed leukocyte TL in 170 SZ patients of Hispanic ancestry grouped based on antipsychotic treatment, compared to 126 matched controls. The group under treatment with atypical antipsychotics was further subdivided according to the risk of medication to cause metabolic syndrome (MetS). Our results show significant erosion in the TL of SZ patients under treatment with the atypical antipsychotics clozapine and olanzapine, which cause high-risk for MetS, compared to healthy controls and patients under treatment with medium and low-risk antipsychotics. However, when the analysis was done separately for clozapine and olanzapine, a significant difference remained only for olanzapine. These findings suggest that atypical antipsychotics that cause high-risk for MetS, particularly olanzapine, may modulate leukocyte TL in SZ patients. Future research is required to elucidate if in fact atypical antipsychotics are involved in TL maintenance in SZ subjects and the mechanism by which this occurs.
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Affiliation(s)
- Nancy Monroy-Jaramillo
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA; Department of Genetics, National Institute of Neurology and Neurosurgery, Manuel Velasco Suárez. Insurgentes Sur 3877 Col. La Fama, Tlalpan, C. P. 14269 Mexico city, Mexico.
| | - Yaneth Rodríguez-Agudelo
- Department of Neuropsychology, National Institute of Neurology and Neurosurgery, Manuel Velasco Suárez. Insurgentes Sur 3877 Col. La Fama, Tlalpan, C. P. 14269 Mexico city, Mexico.
| | - Luis Carlos Aviña-Cervantes
- Department of Psychiatry, National Institute of Neurology and Neurosurgery, Manuel Velasco Suárez. Insurgentes Sur 3877 Col. La Fama, Tlalpan, C. P. 14269 Mexico city, Mexico.
| | - David L Roberts
- Department of Psychiatry, Division of Schizophrenia and Related Disorders, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
| | - Dawn I Velligan
- Department of Psychiatry, Division of Schizophrenia and Related Disorders, University of Texas Health Science Center at San Antonio, San Antonio, 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), Houston, TX, USA.
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19
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Rao S, Kota LN, Li Z, Yao Y, Tang J, Mao C, Jain S, Xu Y, Xu Q. Accelerated leukocyte telomere erosion in schizophrenia: Evidence from the present study and a meta-analysis. J Psychiatr Res 2016; 79:50-56. [PMID: 27174400 DOI: 10.1016/j.jpsychires.2016.04.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 04/26/2016] [Accepted: 04/29/2016] [Indexed: 02/06/2023]
Abstract
Human telomeres consist of tandem nucleotide repeats (TTAGGG) and associated proteins, and telomere length (TL) is reduced progressively with cell division over the lifespan. Telomere erosion might be accelerated or prevented to varying degrees when exposure to serious medical illnesses. In previous studies, an association between TL decrease and schizophrenia has been extensively reported; however, the results remain largely controversial. To further investigate TL in schizophrenia patients and reconcile this controversy, we first measured leucocyte TL (LTL) in our samples (52 paranoid schizophrenia, 89 non-paranoid patients and 120 controls), and then conducted a comprehensive meta-analysis of the existing results of LTL in patients of schizophrenia compared to healthy subjects. Totally, 11 studies encompassing 1243 patients of schizophrenia and 1274 controls were included in the final meta-analysis model. In our samples, significant reduction of LTL in paranoid schizophrenia was observed compared to controls (F = 50.88, P < 0.001); whereas there was no significant difference in LTL between non-paranoid schizophrenia and controls (F = 0.842, P = 0.360). For meta-analysis, random-effects model showed significant LTL decrease in patients of schizophrenia when compared to controls (Z = 2.07, P = 0.039, SMD = -0.48, 95% CI = -0.94 to -0.03). Moreover, a marginal decrease in LTL was observed in medicated patients (Z = 1.92, P = 0.055, SMD = -0.58, 95% CI = -1.18-0.01) and those patients with poor response to antipsychotics (Z = 1.76, P = 0.078, SMD = -0.60, 95% CI = -1.27-0.07). In conclusion, we observed significant reduction of LTL in individuals with schizophrenia compared with controls. However, all the studies included in the meta-analysis were cross-sectional, and better controlled long-term studies are needed to replicate this result.
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Affiliation(s)
- Shuquan Rao
- Laboratory of Molecular Evolution and Applied Biology, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China.
| | - Lakshmi Narayanan Kota
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Zongchang Li
- Institute of Mental Health, The Second Xiangya Hospital, State Key Laboratory of Medical Genetics, Central South University, Changsha, 410011, China
| | - Yao Yao
- Department of Fundamental Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Jinsong Tang
- Institute of Mental Health, The Second Xiangya Hospital, State Key Laboratory of Medical Genetics, Central South University, Changsha, 410011, China
| | - Canquan Mao
- Laboratory of Molecular Evolution and Applied Biology, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Sanjeev Jain
- Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Yong Xu
- Department of Psychiatry, First Clinical Medical College/First Hospital of Shanxi Medical University, Taiyuan, 030000, China
| | - Qi Xu
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100005, China
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20
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Shortened telomere length in patients with depression: A meta-analytic study. J Psychiatr Res 2016; 76:84-93. [PMID: 26919486 DOI: 10.1016/j.jpsychires.2016.01.015] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 01/24/2016] [Accepted: 01/29/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND Accelerated telomere shortening is associated with stress-related cell damage and aging. Patients with depression have been shown to have shortened life expectancy and to be associated with multiple age-related systemic diseases. Previous studies have examined leukocyte telomere length (LTL) in patients with depression, but have shown inconsistent results. METHODS We conducted meta-analyses by pooling relevant results strictly from all eligible case-control studies for cross-sectional comparison of LTL between depressive patients and control subjects (16 studies involving 7207 subjects). The effect sizes (shown as Hedges' g) of each individual study were synthesized by using a random effects model. RESULTS Our analysis revealed telomere length is significantly shorter in subjects with depression in comparison to healthy controls (Hedges' g = -0.42, p = 1 × 10(-5), corresponding to r = -0.21). Significant heterogeneity among studies examining LTL in subjects with depression was found (Q = 116.07, df = 16, I(2) = 86.21%, p < 1 × 10(-8)), which can possibly be explained by methods used in measuring telomere length (Q = 18.42, df = 2, p = 1 × 10(-4)). There was no significant publication bias, nor moderating effect of age, female percentage, or illness duration of depression on synthesized results. CONCLUSIONS Our results support the hypothesis that depression is associated with accelerated cell aging. Future studies are required to clarify whether the association is mediated through environmental stress, and whether effective treatment can halt cell aging.
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21
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Rao S, Ye N, Hu H, Shen Y, Xu Q. Variants in TERT influencing telomere length are associated with paranoid schizophrenia risk. Am J Med Genet B Neuropsychiatr Genet 2016; 171B:317-24. [PMID: 26799699 DOI: 10.1002/ajmg.b.32403] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 10/28/2015] [Indexed: 12/11/2022]
Abstract
Schizophrenia is one of the most severe psychiatric disorders, with a high heritability of up to 80%. Several studies have reported telomere dysfunction in schizophrenia, and common variants in the telomerase reverse transcriptase (TERT) gene. TERT is a key component of the telomerase complex that maintains telomere length by addition of telomere repeats to telomere ends, and has repeatedly shown association with mean lymphocyte telomere length (LTL). Thus, we hypothesized that TERT may be a novel susceptibility gene for schizophrenia. Using a Taqman protocol, we genotyped eight tag SNPs from the TERT locus in 1,072 patients with paranoid schizophrenia and 1,284 control subjects from a Chinese Han population. We also measured mean LTL in 98 cases and 109 controls using a quantitative PCR-based technique. Chi-square tests showed that two SNPs, rs2075786 (P = 0.0009, OR = 0.76, 95%CI = 0.65-0.90) and rs4975605 (P = 0.0026, OR = 0.73, 95%CI = 0.60-0.90), were associated with a protective effect, while rs10069690 was associated with risk of paranoid schizophrenia (P = 0.0044, OR = 1.23, 95%CI = 1.07-1.42). Additionally, the rs2736118-rs2075786 haplotype showed significant association with paranoid schizophrenia (P = 0.0013). Moreover, mean LTL correlated with rs2075786 genotypes was significantly shorter in the patient group than the control group. The present results suggest that the TERT gene may be a novel candidate involved in the development of paranoid schizophrenia.
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Affiliation(s)
- Shuquan Rao
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Tsinghua University, Beijing, China
| | - Ning Ye
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Tsinghua University, Beijing, China
| | - Huiling Hu
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Tsinghua University, Beijing, China
| | - Yan Shen
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Tsinghua University, Beijing, China
| | - Qi Xu
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Tsinghua University, Beijing, China
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22
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Ridout KK, Ridout SJ, Price LH, Sen S, Tyrka AR. Depression and telomere length: A meta-analysis. J Affect Disord 2016; 191:237-47. [PMID: 26688493 PMCID: PMC4760624 DOI: 10.1016/j.jad.2015.11.052] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 11/06/2015] [Accepted: 11/30/2015] [Indexed: 01/03/2023]
Abstract
BACKGROUND Several recent studies have investigated the relationship between telomere length and depression with inconsistent results. This meta-analysis examined whether telomere length and depression are associated and explored factors that might affect this association. METHODS Studies measuring telomere length in subjects with clinically significant unipolar depression were included. A comprehensive search strategy identified studies in PubMed, MEDLINE, PsycINFO, Global Health, The Cochrane Library, and Web of Science. A structured data abstraction form was used and studies were appraised for inclusion or exclusion using a priori conditions. Analyses were conducted using standardized mean differences in a continuous random effects model. RESULTS Thirty-eight studies (N=34,347) met the inclusion criteria. The association between depression and telomere length was significant, with a Cohen's d effect size of -0.205 (p<0.0001, I(2)=42%). Depression severity significantly associated with telomere length (p=0.03). Trim and fill analysis indicated the presence of publication bias (p=0.003), but that the association remained highly significant after accounting for the bias. Subgroup analysis revealed depression assessment tools, telomere measurement techniques, source tissue and comorbid medical conditions significantly affected the relationship. LIMITATIONS Other potentially important sub-groups, including antidepressant use, have not been investigated in sufficient detail or number yet and thus were not addressed in this meta-analysis. CONCLUSIONS There is a negative association between depression and telomere length. Further studies are needed to clarify potential causality underlying this association and to elucidate the biology linking depression and this cellular marker of stress exposure and aging.
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Affiliation(s)
- Kathryn K. Ridout
- Mood Disorders Research Program and Laboratory for Clinical and
Translational Neuroscience, Butler Hospital, Providence, RI,Department of Psychiatry and Human Behavior, Alpert Medical School
of Brown University, Providence, RI,Address Correspondence to: Kathryn K. Ridout, M.D.,
Ph.D., Butler Hospital, 345 Blackstone Blvd., Providence, RI 02906. TEL: (401)
455-6270. FAX: (401) 455-6252.
| | - Samuel J. Ridout
- Mood Disorders Research Program and Laboratory for Clinical and
Translational Neuroscience, Butler Hospital, Providence, RI,Department of Psychiatry and Human Behavior, Alpert Medical School
of Brown University, Providence, RI
| | - Lawrence H. Price
- Mood Disorders Research Program and Laboratory for Clinical and
Translational Neuroscience, Butler Hospital, Providence, RI,Department of Psychiatry and Human Behavior, Alpert Medical School
of Brown University, Providence, RI
| | - Srijan Sen
- Molecular and Behavioral Neuroscience Institute and Department of
Psychiatry, University of Michigan, Ann Arbor, MI
| | - Audrey R. Tyrka
- Mood Disorders Research Program and Laboratory for Clinical and
Translational Neuroscience, Butler Hospital, Providence, RI,Department of Psychiatry and Human Behavior, Alpert Medical School
of Brown University, Providence, RI
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23
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Tyrka AR, Parade SH, Price LH, Kao HT, Porton B, Philip NS, Welch ES, Carpenter LL. Alterations of Mitochondrial DNA Copy Number and Telomere Length With Early Adversity and Psychopathology. Biol Psychiatry 2016; 79:78-86. [PMID: 25749099 PMCID: PMC4503518 DOI: 10.1016/j.biopsych.2014.12.025] [Citation(s) in RCA: 187] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 12/22/2014] [Accepted: 12/31/2014] [Indexed: 12/25/2022]
Abstract
BACKGROUND Telomere shortening and alterations of mitochondrial biogenesis are involved in cellular aging. Childhood adversity is associated with telomere shortening, and several investigations have shown short telomeres in psychiatric disorders. Recent studies have examined whether mitochondria might be involved in neuropsychiatric conditions; findings are limited and no prior work has examined this in relation to stress exposure. METHODS Two-hundred ninety healthy adults provided information on childhood parental loss and maltreatment and completed diagnostic interviews. Participants were categorized into four groups based upon the presence or absence of childhood adversity and the presence or absence of lifetime psychopathology (depressive, anxiety, and substance use disorders). Telomere length and mitochondrial DNA (mtDNA) copy number were measured from leukocyte DNA by quantitative polymerase chain reaction. RESULTS Childhood adversity and lifetime psychopathology were each associated with shorter telomeres (p < .01) and higher mtDNA copy numbers (p < .001). Significantly higher mtDNA copy numbers and shorter telomeres were seen in individuals with major depression, depressive disorders, and anxiety disorders, as well as those with parental loss and childhood maltreatment. A history of substance disorders was also associated with significantly higher mtDNA copy numbers. CONCLUSIONS This study provides the first evidence of an alteration of mitochondrial biogenesis with early life stress and with anxiety and substance use disorders. We replicate prior work on telomere length and psychopathology and show that this effect is not secondary to medication use or comorbid medical illness. Finally, we show that early life stress and psychopathology are each associated with these markers of cellular aging.
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Affiliation(s)
- Audrey R. Tyrka
- Mood Disorders Research Program and Laboratory for Clinical and Translational Neuroscience, Butler Hospital, Providence, RI, USA,Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI, USA
| | - Stephanie H. Parade
- Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI, USA,Bradley/Hasbro Children’s Research Center, E. P. Bradley Hospital, East Providence, RI, USA
| | - Lawrence H. Price
- Mood Disorders Research Program and Laboratory for Clinical and Translational Neuroscience, Butler Hospital, Providence, RI, USA,Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI, USA
| | - Hung-Teh Kao
- Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI, USA,Laboratory of Molecular Psychiatry, Butler Hospital, Providence, RI, USA
| | - Barbara Porton
- Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI, USA,Laboratory of Molecular Psychiatry, Butler Hospital, Providence, RI, USA
| | - Noah S. Philip
- Mood Disorders Research Program and Laboratory for Clinical and Translational Neuroscience, Butler Hospital, Providence, RI, USA,Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI, USA
| | - Emma S. Welch
- Mood Disorders Research Program and Laboratory for Clinical and Translational Neuroscience, Butler Hospital, Providence, RI, USA
| | - Linda L. Carpenter
- Mood Disorders Research Program and Laboratory for Clinical and Translational Neuroscience, Butler Hospital, Providence, RI, USA,Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI, USA
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Association of telomere length and mitochondrial DNA copy number with risperidone treatment response in first-episode antipsychotic-naïve schizophrenia. Sci Rep 2015; 5:18553. [PMID: 26680692 PMCID: PMC4683467 DOI: 10.1038/srep18553] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 11/20/2015] [Indexed: 12/13/2022] Open
Abstract
Accumulating evidence indicates a putative association of telomere length and mitochondrial function with antipsychotics response in schizophrenia (SCZ). However, pharmacological findings were limited and no previous work has assessed this in a prospective longitudinal study. This study assessed telomere length and mitochondrial DNA copy number in first-episode antipsychotic-naïve SCZ patients with 8-week risperidone treatment to evaluate the association between these biomarkers and clinical treatment response. We recruited 137 first-episode antipsychotic-naive SCZ patients (and 144 controls) at baseline and 89 patients completed the 8-week follow-up. Patients, completed follow-up, were divided into Responders (N = 46) and Non-Responders (N = 43) according to the percentage of symptoms improvement. Linear regression analyses show that SCZ patients had significantly lower mtDNA copy number (β = -0.108, p = 0.002), and no alteration of telomere length when compared with healthy controls. In addition, compared with Non-Responders, Responders had significantly lower mtDNA copy number (β = -0.178, p = 0.001), and longer telomere length (β = 0.111, p = 0.071) before the 8-week treatment. After treatment, Responders persisted lower mtDNA copy number comparing with No-Responders (partial η(2) = 0.125, p = 0.001). These findings suggest that telomere length and mtDNA copy number may hold the potential to serve as predictors of antipsychotic response of SCZ patients.
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25
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Savolainen K, Eriksson JG, Kajantie E, Pesonen AK, Räikkönen K. Associations between the five-factor model of personality and leukocyte telomere length in elderly men and women: The Helsinki Birth Cohort Study (HBCS). J Psychosom Res 2015; 79:233-8. [PMID: 25972055 DOI: 10.1016/j.jpsychores.2015.04.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 04/21/2015] [Accepted: 04/22/2015] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Personality traits have been associated with cardiometabolic diseases and mental disorders as well as with longevity. However, the underlying mechanisms are not fully understood. Accelerated cellular aging may play a role in this process. We studied whether personality traits in late adulthood, as defined in the five-factor model (FFM), were associated with a biomarker of cellular vitality, leukocyte telomere length (LTL). METHODS At a mean age of 63.4 (SD=2.8) years, 1671 (742 men, 929 women) participants from the Helsinki Birth Cohort Study filled in the Neuroticism, Extraversion and Openness Personality Inventory (NEO-PI). LTL was measured at a mean age of 61.5 (SD=2.9) years by using a real-time quantitative PCR method. RESULTS None of the FFM personality dimensions were significantly associated with the LTL in the analyses of both sexes combined. We however found interaction between sex and agreeableness (B=0.020, 95% CI=.008, 0.032, p=.001) and in the sex-specific analyses, men who scored higher on agreeableness (B=-0.086, 95% CI=-0.155, -0.016, p=.016) and women who scored lower on agreeableness (B=0.074, 95% CI=0.014, 0.134, p=.016) had shorter LTL. CONCLUSIONS FFM dimensions of personality were not associated with LTL in a sample of elderly individuals. The counterintuitive and sporadic sex specific finding on agreeableness requires replication. Overall our findings suggest that LTL, a biomarker of cellular aging, may not offer insight into the associations between personality, longevity and health.
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Affiliation(s)
- Katri Savolainen
- Institute of Behavioural Sciences, University of Helsinki, Finland
| | - Johan G Eriksson
- Diabetes Prevention Unit, Department of Chronic Disease Prevention, National Institution for Health and Welfare, Helsinki, Finland; Folkhälsan Research Centre, Helsinki, Finland; Unit of General Practice, Helsinki University of Central Hospital, Finland; Vasa Central Hospital, Vaasa, Finland; Department of General Practice and Primary Health Care, University of Helsinki, Finland
| | - Eero Kajantie
- Diabetes Prevention Unit, Department of Chronic Disease Prevention, National Institution for Health and Welfare, Helsinki, Finland; Hospital for Children and Adolescents, Helsinki University of Central Hospital, Finland
| | | | - Katri Räikkönen
- Institute of Behavioural Sciences, University of Helsinki, Finland
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Lindqvist D, Epel ES, Mellon SH, Penninx BW, Révész D, Verhoeven JE, Reus VI, Lin J, Mahan L, Hough CM, Rosser R, Bersani FS, Blackburn EH, Wolkowitz OM. Psychiatric disorders and leukocyte telomere length: Underlying mechanisms linking mental illness with cellular aging. Neurosci Biobehav Rev 2015; 55:333-64. [PMID: 25999120 PMCID: PMC4501875 DOI: 10.1016/j.neubiorev.2015.05.007] [Citation(s) in RCA: 220] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 05/06/2015] [Accepted: 05/10/2015] [Indexed: 10/23/2022]
Abstract
Many psychiatric illnesses are associated with early mortality and with an increased risk of developing physical diseases that are more typically seen in the elderly. Moreover, certain psychiatric illnesses may be associated with accelerated cellular aging, evidenced by shortened leukocyte telomere length (LTL), which could underlie this association. Shortened LTL reflects a cell's mitotic history and cumulative exposure to inflammation and oxidation as well as the availability of telomerase, a telomere-lengthening enzyme. Critically short telomeres can cause cells to undergo senescence, apoptosis or genomic instability, and shorter LTL correlates with poorer health and predicts mortality. Emerging data suggest that LTL may be reduced in certain psychiatric illnesses, perhaps in proportion to exposure to the psychiatric illnesses, although conflicting data exist. Telomerase has been less well characterized in psychiatric illnesses, but a role in depression and in antidepressant and neurotrophic effects has been suggested by preclinical and clinical studies. In this article, studies on LTL and telomerase activity in psychiatric illnesses are critically reviewed, potential mediators are discussed, and future directions are suggested. A deeper understanding of cellular aging in psychiatric illnesses could lead to re-conceptualizing them as systemic illnesses with manifestations inside and outside the brain and could identify new treatment targets.
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Affiliation(s)
- Daniel Lindqvist
- Department of Clinical Sciences, Section for Psychiatry, Lund University, Lund, Sweden; Department of Psychiatry, University of California San Francisco (UCSF), School of Medicine, San Francisco, CA, USA
| | - Elissa S Epel
- Department of Psychiatry, University of California San Francisco (UCSF), School of Medicine, San Francisco, CA, USA
| | - Synthia H Mellon
- Department of OB-GYN and Reproductive Sciences, UCSF School of Medicine, San Francisco, CA, USA
| | - Brenda W Penninx
- Department of Psychiatry and EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
| | - Dóra Révész
- Department of Psychiatry and EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
| | - Josine E Verhoeven
- Department of Psychiatry and EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
| | - Victor I Reus
- Department of Psychiatry, University of California San Francisco (UCSF), School of Medicine, San Francisco, CA, USA
| | - Jue Lin
- Department of Biochemistry and Biophysics, UCSF School of Medicine, San Francisco, CA, USA
| | - Laura Mahan
- Department of Psychiatry, University of California San Francisco (UCSF), School of Medicine, San Francisco, CA, USA
| | - Christina M Hough
- Department of Psychiatry, University of California San Francisco (UCSF), School of Medicine, San Francisco, CA, USA
| | - Rebecca Rosser
- Department of Psychiatry, University of California San Francisco (UCSF), School of Medicine, San Francisco, CA, USA
| | - F Saverio Bersani
- Department of Psychiatry, University of California San Francisco (UCSF), School of Medicine, San Francisco, CA, USA; Department of Neurology and Psychiatry, Sapienza University of Rome, Rome, Italy
| | - Elizabeth H Blackburn
- Department of Biochemistry and Biophysics, UCSF School of Medicine, San Francisco, CA, USA
| | - Owen M Wolkowitz
- Department of Psychiatry, University of California San Francisco (UCSF), School of Medicine, San Francisco, CA, USA.
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Costa DDS, Rosa DVF, Barros AGA, Romano-Silva MA, Malloy-Diniz LF, Mattos P, de Miranda DM. Telomere length is highly inherited and associated with hyperactivity-impulsivity in children with attention deficit/hyperactivity disorder. Front Mol Neurosci 2015. [PMID: 26217174 PMCID: PMC4498098 DOI: 10.3389/fnmol.2015.00028] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Telomere length (TL) is highly heritable, and a shorter telomere at birth may increase the risk of age-related problems. Additionally, a shorter TL may represent a biomarker of chronic stress and has been associated with psychiatric disorders. However, no study has explored whether there is an association between TL and the symptoms of one of the most common neurodevelopmental disorders in childhood: Attention Deficit/Hyperactive Disorder (ADHD). We evaluated 61 (range, 6–16 years) ADHD children and their parents between 2012 and 2014. TL was measured with a quantitative polymerase chain reaction method with telomere signal normalized to the signal from a single copy gene (36B4) to generate a T/S ratio. Family data was processed through a generalized estimated equations (GEE) model to determine the effect of parental TL on children TL. Inattentive and hyperactive-impulsive symptoms were also evaluated in relation to TL. For the first time, we found general heritability to be the major mechanism explaining interindividual TL variation in ADHD (father-child: 95% CI = 0.35/0.91, p < 0.001; mother-child: 95% CI = 0.38/0.74, p < 0.001). The hyperactive-impulsive dimension of ADHD was related with children’s TL (r = −339, p = 0.008) and maternal TL (r = −264, p = 0.047), but not with paternal TL (p > 0.05). The ADHD inattentive dimension was not significant associated with TL in this study (p > 0.05). TL was shown to be a potential biomarker of the ADHD symptoms burden in families affected by this neurodevelopmental disorder. However, it is crucial that future studies investigating the rate of telomere attrition in relation to psychiatric problems to consider the strong determination of TL at birth by inheritance.
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Affiliation(s)
- Danielle de Souza Costa
- School of Medicine, Federal University of Minas Gerais Belo Horizonte, MG, Brazil ; National Institute of Science and Technology of Molecular Medicine (INCT-MM) Belo Horizonte, MG, Brazil
| | - Daniela Valadão Freitas Rosa
- School of Medicine, Federal University of Minas Gerais Belo Horizonte, MG, Brazil ; National Institute of Science and Technology of Molecular Medicine (INCT-MM) Belo Horizonte, MG, Brazil
| | - Alexandre Guimarães Almeida Barros
- School of Medicine, Federal University of Minas Gerais Belo Horizonte, MG, Brazil ; National Institute of Science and Technology of Molecular Medicine (INCT-MM) Belo Horizonte, MG, Brazil
| | - Marco Aurélio Romano-Silva
- School of Medicine, Federal University of Minas Gerais Belo Horizonte, MG, Brazil ; National Institute of Science and Technology of Molecular Medicine (INCT-MM) Belo Horizonte, MG, Brazil
| | - Leandro Fernandes Malloy-Diniz
- School of Medicine, Federal University of Minas Gerais Belo Horizonte, MG, Brazil ; National Institute of Science and Technology of Molecular Medicine (INCT-MM) Belo Horizonte, MG, Brazil
| | - Paulo Mattos
- Department of Psychiatry, Federal University of Rio de Janeiro Rio de Janeiro, Brazil ; D'Or Institute for Research and Education (IDOR) Rio de Janeiro, Brazil
| | - Débora Marques de Miranda
- School of Medicine, Federal University of Minas Gerais Belo Horizonte, MG, Brazil ; National Institute of Science and Technology of Molecular Medicine (INCT-MM) Belo Horizonte, MG, Brazil
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Polho GB, De-Paula VJ, Cardillo G, dos Santos B, Kerr DS. Leukocyte telomere length in patients with schizophrenia: A meta-analysis. Schizophr Res 2015; 165:195-200. [PMID: 25975826 DOI: 10.1016/j.schres.2015.04.025] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Revised: 04/19/2015] [Accepted: 04/22/2015] [Indexed: 01/11/2023]
Abstract
Schizophrenia has been suggested as a syndrome of accelerated aging. Telomere length (TL) decrease is considered one biological marker associated with age and can be accelerated by pathological characteristics present in schizophrenia. Several studies evaluated TL in schizophrenia, but the results are still controversial. The aim of this study was to conduct a meta-analysis of the existing results of TL in leukocytes of individuals with schizophrenia compared to healthy controls. A search was performed in PubMed, using the keywords 'telomere schizophrenia' and 'telomere psychosis'. We included data from original articles that measured TL in leukocytes of human patients with schizophrenia and healthy control subjects. 45 articles were found, but only 7 met our criteria. Telomere length of controls was not statistically different from that of patients with schizophrenia (p=0.07). Crossvalidation with the leave-one-out method resulted in a significant model (p=0.03) in which TL of individuals with schizophrenia is smaller than control (SMD=0.38; 95% CI=[0.05, 0.72]). We also propose a biological pathway through which schizophrenia could promote telomere erosion and how antipsychotics might compensate this loss. There are few studies made on this subject with diverse methodology and heterogeneous sample. Some articles did not consider other possible influences on TL. Overall our results suggest that TL is decreased in schizophrenia. Although this is consistent with the idea of accelerated aging, schizophrenia is a complex disease and there are several factors that influence TL that should be controlled in future studies.
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Affiliation(s)
- G B Polho
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - V J De-Paula
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - G Cardillo
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - B dos Santos
- Research Assistance Service, School of Nursing, University of São Paulo, São Paulo, Brazil
| | - D S Kerr
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry, Faculty of Medicine, University of São Paulo, São Paulo, Brazil; Center for Interdisciplinary Research on Applied Neurosciences (NAPNA), University of São Paulo, São Paulo, Brazil.
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Telomere length and hypothalamic-pituitary-adrenal axis response to stress in elderly adults. Psychoneuroendocrinology 2015; 53:179-84. [PMID: 25622010 DOI: 10.1016/j.psyneuen.2014.12.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 12/28/2014] [Accepted: 12/29/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Telomere shortening, a biomarker of cellular aging, has been associated with aging-related diseases. While psychological stress has been implicated in the process of telomere shortening, associations with activity of physiological stress systems have remained elusive. We studied whether leukocyte telomere length (LTL) is associated with hypothalamic-pituitary-adrenal (HPA) axis responses to psychosocial stress in elderly adults. METHODS LTL, measured by qPCR method was available in 1964 women and men from the Helsinki Birth Cohort Study at a mean age of 61.5 (SD=2.9) years. At a mean age of 63.5 (SD=2.7) years a subsample of them took part in the Trier Social Stress Test (TSST) during which salivary cortisol (n=283) and plasma cortisol and ACTH concentrations (n=215) were measured. RESULTS Mixed model regression analyses showed no linear or non-linear associations between LTL and HPA axis activity during TSST (p-values for LTL main effects >298; p-values for LTL×time interactions >096). Only one non-linear association between LTL and plasma ACTH area under the curve increment was significant after adjustments for covariates and confounders. This association did not survive correction for multiple testing. CONCLUSIONS Our findings suggest that LTL is not consistently associated with HPA axis activity during a standardized psychosocial stress test in elderly adults.
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Lima IMM, Barros A, Rosa DV, Albuquerque M, Malloy-Diniz L, Neves FS, Romano-Silva MA, de Miranda DM. Analysis of telomere attrition in bipolar disorder. J Affect Disord 2015; 172:43-7. [PMID: 25451394 DOI: 10.1016/j.jad.2014.09.043] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 09/23/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Telomeres can be considered a marker of biological aging. Studies have suggested that telomere shortening may be associated with aging related diseases and also psychiatric disorders. OBJECTIVES Investigate whether bipolar disorder (BD) and its clinical specificities are associated with telomere shortening. METHODS Eighty-five BD patients and 95 healthy controls were paired for age, sex and educational level. Volunteers were submitted to a psychiatric interview and clinical evaluation. Patients and controls were compared as a whole sample and within specific telomere range (short and long telomeres). Intrapatients group comparison involved type of BD and comorbidities. A Real Time Quantitative PCR was performed in order to verify leukocytes telomere length. RESULTS Bipolar disorder patients presented shorter telomeres when compared to controls (p<0.001). However, there was no significant difference in telomere length between different BD subtypes. When two groups of patients (long and short telomeres) were compared, only panic disorder showed an association with telomere categories (χ(2)=6.91; p=0.009; OR=4.27). LIMITATIONS It was not possible to collect information about time since diagnosis, which limited conclusions regarding BD chronicity and telomere length. Furthermore, medication interference upon telomere length was not controlled. CONCLUSIONS Results suggest that BD is associated with reduced telomere length. Also, panic comorbidity may represent an additive risk factor. Understanding aspects that contribute to determination of telomere size in bipolar patients allows us to understand what the impact on telomeres size is, which is a health vulnerability marker.
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Affiliation(s)
- Isabela Maria Magalhães Lima
- National Institute of Science and Technology in Molecular Medicine, Federal University of Minas Gerais(UFMG), Brazil.
| | - Alexandre Barros
- National Institute of Science and Technology in Molecular Medicine, Federal University of Minas Gerais(UFMG), Brazil
| | - Daniela Valadão Rosa
- National Institute of Science and Technology in Molecular Medicine, Federal University of Minas Gerais(UFMG), Brazil
| | - Maicon Albuquerque
- Department of Physical Education, Federal University of Viçosa, Minas Gerais, Brazil
| | - Leandro Malloy-Diniz
- National Institute of Science and Technology in Molecular Medicine, Federal University of Minas Gerais(UFMG), Brazil; Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Fernando Silva Neves
- Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marco Aurélio Romano-Silva
- National Institute of Science and Technology in Molecular Medicine, Federal University of Minas Gerais(UFMG), Brazil; Department of Mental Health, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Débora Marques de Miranda
- National Institute of Science and Technology in Molecular Medicine, Federal University of Minas Gerais(UFMG), Brazil; Department of Pediatrics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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31
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Verhoeven JE, Révész D, Wolkowitz OM, Penninx BWJH. Cellular aging in depression: Permanent imprint or reversible process?: An overview of the current evidence, mechanistic pathways, and targets for interventions. Bioessays 2014; 36:968-78. [PMID: 25143317 DOI: 10.1002/bies.201400068] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Depression might be associated with accelerated cellular aging. However, does this result in an irreversible state or is the body able to slow down or recover from such a process? Telomeres are DNA-protein complexes that protect the ends of chromosomes and generally shorten with age; and therefore index cellular aging. The majority of studies indicate that persons with depression have shorter leukocyte telomeres than similarly aged non-depressed persons, which may contribute to the observed unfavorable somatic health outcomes in the depressed population. Some small-scale preliminary studies raise the possibility that behavioral or pharmacological interventions may either slow down or else reverse this accelerated telomere shortening, possibly through increasing the activity of the telomere-lengthening enzyme telomerase. This paper covers the current state of evidence in the relationship between depression and the telomere-telomerase system and debates whether depression-related cellular aging should be considered a reversible process or permanent damage.
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Affiliation(s)
- Josine E Verhoeven
- Department of Psychiatry and EMGO Institute for Health and Care Research, VU University Medical Centre, Amsterdam, The Netherlands
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32
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Abstract
The etiopathogenesis of schizophrenia is poorly understood. Within the proposed "neurodegeneration paradigm", observations have been put forth for "accelerated aging" in this disorder. This proposition is largely based on the neuroscience research that demonstrates progressive changes in brain as well as other systemic abnormalities supportive of faster aging process in patients with this disorder. In this review, we have summarized the literature related to the concept of early aging in schizophrenia. These studies include P300 abnormalities & visual motion discrimination, neuroimaging findings, telomere dynamics as well as neuropathology of related brain regions. We also propose a role of vitamin D, neuroimmunological changes and elevated oxidative stress as well as mitochondrial dysfunction in addition to the above factors with 'vitamin-D deficiency' as the central paradox. Put together, the evidence supporting early aging in schizophrenia is compelling and this requires further systematic studies.
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Savolainen K, Eriksson JG, Kajantie E, Lahti M, Räikkönen K. The history of sleep apnea is associated with shorter leukocyte telomere length: the Helsinki Birth Cohort Study. Sleep Med 2013; 15:209-12. [PMID: 24360984 DOI: 10.1016/j.sleep.2013.11.779] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 11/07/2013] [Accepted: 11/10/2013] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Sleep apnea poses an elevated risk for chronic age-related diseases. Leukocyte telomere length (LTL), a biomarker and factor associated with accelerated cellular aging processes, may serve as a novel mechanism underlying these disease risks. We investigated if a history of clinician-diagnosed sleep apnea or primary snoring was associated with LTL in later adulthood. METHODS Data on sleep apnea, primary snoring and LTL, were available for 1948 participants from the Helsinki Birth Cohort Study. Patients with sleep apnea (n=44) and primary snoring (n=29) severe enough to be recorded as an inpatient diagnosis for hospitalization were identified by their case records through the Finnish Hospital Discharge Register. The LTL was measured by using the realtime quantitative polymerase chain reaction (PCR) method at a mean age of 61.5 years (standard deviation [SD], 2.9). RESULTS A history of sleep apnea was associated with shorter LTL (P=.010). Adjustment for a number of covariates did not alter the association. CONCLUSIONS Accelerated cellular aging reflected in shorter LTL in patients with a history of sleep apnea may partly explain their higher risk for age-related diseases. Future studies elucidating the impacts of long-term or successful treatment history of sleep apnea on the maintenance of LTL are warranted.
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Affiliation(s)
- Katri Savolainen
- Institute of Behavioral Sciences, University of Helsinki, Finland.
| | - Johan G Eriksson
- Diabetes Prevention Unit, Department of Chronic Disease Prevention, National Institution for Health and Welfare, Helsinki, Finland; Folkhälsan Research Center, Helsinki, Finland; Unit of General Practice, Helsinki University of Central Hospital, Finland; Vaasa Central Hospital, Vaasa, Finland; Department of General Practice and Primary Health Care, University of Helsinki, Finland
| | - Eero Kajantie
- Diabetes Prevention Unit, Department of Chronic Disease Prevention, National Institution for Health and Welfare, Helsinki, Finland; Hospital for Children and Adolescents, Helsinki University of Central Hospital, Finland
| | - Marius Lahti
- Institute of Behavioral Sciences, University of Helsinki, Finland
| | - Katri Räikkönen
- Institute of Behavioral Sciences, University of Helsinki, Finland
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Nieratschker V, Lahtinen J, Meier S, Strohmaier J, Frank J, Heinrich A, Breuer R, Witt SH, Nöthen MM, Rietschel M, Hovatta I. Longer telomere length in patients with schizophrenia. Schizophr Res 2013; 149:116-20. [PMID: 23870621 DOI: 10.1016/j.schres.2013.06.043] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 06/02/2013] [Accepted: 06/29/2013] [Indexed: 10/26/2022]
Abstract
Previous studies have reported an association between shorter leukocyte telomere length and schizophrenia (SCZ). The aim of the present study was to replicate this finding in a large sample of SCZ patients (n=539) and population-based controls (n=519). In addition, the possible influence of SCZ severity on telomere length - as measured by age of onset, mode of onset, and course of the disorder - was investigated. Telomere length was negatively associated with age in both patients and controls. This is a consistently reported phenomenon, related to the problem of DNA end-replication. However, in contrast to previous findings, SCZ patients displayed longer telomeres compared to controls (p=0.015). No association was found with any SCZ-severity subphenotype. Interestingly, recent studies have reported associations between longer leukocyte telomere length and both smaller hippocampal volume, and poorer episodic memory performance. Both phenotypes are common in patients with SCZ. Further studies are warranted to investigate whether the present association between SCZ and increased telomere length was driven by such associations, or rather by association with the clinical disease per se or other associated phenotypes, endophenotypes or lifestyle factors.
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Affiliation(s)
- Vanessa Nieratschker
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, J 5, 68159 Mannheim, Germany.
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