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Toh SHY, Wan MJS, Kroneman LM, Nyein N, Wong JCM. Temperament and adolescent suicide attempts: a case-control study with multi-ethnic Asian adolescents. BMC Psychiatry 2023; 23:434. [PMID: 37322458 PMCID: PMC10267549 DOI: 10.1186/s12888-023-04914-6] [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: 02/13/2023] [Accepted: 05/30/2023] [Indexed: 06/17/2023] Open
Abstract
BACKGROUND Suicide is the leading cause of death for adolescents in several parts of Asia, including Singapore. This study examines the relationship between temperament and youth suicide attempts in a sample of multi-ethnic Singaporean adolescents. METHODS A case-control design compared 60 adolescents (Mage = 16.40, SDage = 2.00) with a recent suicide attempt (i.e., past 6 months) with 58 adolescents (Mage = 16.00, SDage = 1.68) without any history of suicide attempts. Presence of suicide attempts was established using the semi-structured interviewer-administered Columbia Suicide Severity Rating Scale. Participants also completed self-report measures on temperament traits, psychiatric diagnoses, stressful life events, and perceived parental rejection in an interview-based format. RESULTS Psychiatric comorbidity, recent stressful life events, perceived parental rejection, and all five "difficult temperament" traits, were significantly overrepresented among adolescent cases relative to healthy controls. Adjusted logistic regression models revealed significant associations between suicide attempt, MDD comorbidity (OR: 10.7, 95% Cl: (2.24-51.39)), "negative mood" trait (OR: 1.12-1.18, 95% Cl: (1.00-1.27)), and the interaction term of "positive mood" and "high adaptability" traits (OR: 0.943 - 0.955, 95% Cl: (0.900 - 0.986)). Specifically, "positive mood" predicted lower likelihood of a suicide attempt when "adaptability" was high (OR: 0.335 - 0.342, 95% Cl: (0.186 - 0.500)) but not low (OR: 0.968 - 0.993, 95% Cl: (0.797 - 1.31)). CONCLUSION Temperament screening may be important to identify adolescents at higher or lower risk of suicide at an early stage. More longitudinal and neurobiological research converging on these temperament findings will be helpful in ascertaining temperament screening as an effective suicide prevention methodology for adolescents.
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Affiliation(s)
- Sean H Y Toh
- NUS Mind-Science Centre, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Queenstown, Singapore.
- Research Department, Intellect Pte Ltd, Tanjong Pagar, Singapore.
| | - Michelle J S Wan
- NUS Mind-Science Centre, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Queenstown, Singapore
| | - Leoniek M Kroneman
- NUS Mind-Science Centre, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Queenstown, Singapore
| | - N Nyein
- Department of Psychological Medicine, National University Health Systems, Queenstown, Singapore
| | - John C M Wong
- NUS Mind-Science Centre, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Queenstown, Singapore
- Department of Psychological Medicine, National University Health Systems, Queenstown, Singapore
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Yang JH, Rhee SJ, Park CHK, Kim MJ, Shin D, Lee JW, Kim J, Kim H, Lee HJ, Ha K, Ahn YM. Self-Transcendence Mediates the Relationship between Early Trauma and Fatal Methods of Suicide Attempts. J Korean Med Sci 2021; 36:e39. [PMID: 33527782 PMCID: PMC7850863 DOI: 10.3346/jkms.2021.36.e39] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 11/22/2020] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Early trauma is known to be a risk factor of suicide-related behavior. On the other hand, people who attempt suicide using a fatal method are reported to be more likely to complete suicide. In this study, we assumed that early trauma affects an individual's temperament and character and thereby increases the risk of a fatal method of suicide attempts. METHODS We analyzed 92 people with a history of previous suicide attempts. We compared the Temperament and Character Inventory-Revised scores between the groups with and without early trauma, and between the groups with and without a history of suicide attempt using fatal methods through an analysis of covariance with age, sex, and presence of a psychiatric history as covariates. A mediation analysis was conducted of the relationship between early trauma and fatal methods of suicide attempt with self-transcendence as a mediator. RESULTS Higher self-transcendence was reported in the fatal group (27.71 ± 13.78 vs. 20.97 ± 12.27, P = 0.010) and the early trauma group (28.05 ± 14.30 vs. 19.43 ± 10.73, P = 0.001), respectively. The mediation model showed that self-transcendence mediates the relationship between early trauma and fatal methods of suicide attempt. The 95% confidence intervals for the direct and indirect effect were (-0.559, 1.390) and (0.026, 0.947), respectively. CONCLUSION Self-transcendence may mediate the relationship between early trauma and fatal methods of suicide attempt. Self-transcendence may be associated with unhealthy defenses and suicidal behavior for self-punishment and may constitute a marker of higher suicide risk.
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Affiliation(s)
- Jeong Hun Yang
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
| | - Sang Jin Rhee
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
| | | | - Min Ji Kim
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
| | - Daun Shin
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
| | - Jae Won Lee
- Department of Psychiatry, Seoul Metropolitan Eunpyeong Hospital, Seoul, Korea
| | - Junghyun Kim
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
| | - Hyeyoung Kim
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
- Department of Psychiatry, Inha University Hospital, Incheon, Korea
| | - Hyun Jeong Lee
- Department of Psychiatry and Behavioral Science, National Cancer Center, Goyang, Korea
- Division of Cancer Control & Policy, National Cancer Center, Goyang, Korea
| | - Kyooseob Ha
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
- Institute of Human Behavioral Medicine, Seoul National University Medical Research Center, Seoul, Korea
| | - Yong Min Ahn
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
- Institute of Human Behavioral Medicine, Seoul National University Medical Research Center, Seoul, Korea.
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Reinforcement sensitivity, depression and anxiety: A meta-analysis and meta-analytic structural equation model. Clin Psychol Rev 2020; 77:101842. [PMID: 32179341 DOI: 10.1016/j.cpr.2020.101842] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 02/06/2020] [Accepted: 03/04/2020] [Indexed: 12/21/2022]
Abstract
Reinforcement Sensitivity Theory (RST) posits that individual differences in reward and punishment processing predict differences in cognition, behavior, and psychopathology. We performed a quantitative review of the relationships between reinforcement sensitivity, depression and anxiety, in two separate sets of analyses. First, we reviewed 204 studies that reported either correlations between reinforcement sensitivity and self-reported symptom severity or differences in reinforcement sensitivity between diagnosed and healthy participants, yielding 483 effect sizes. Both depression (Hedges' g = .99) and anxiety (g = 1.21) were found to be high on punishment sensitivity. Reward sensitivity negatively predicted only depressive disorders (g = -.21). More severe clinical states (e.g., acute vs remission) predicted larger effect sizes for depression but not anxiety. Next, we reviewed an additional 39 studies that reported correlations between reinforcement sensitivity and both depression and anxiety, yielding 156 effect sizes. We then performed meta-analytic structural equation modeling to simultaneously estimate all covariances and control for comorbidity. Again we found punishment sensitivity to predict depression (β = .37) and anxiety (β = .35), with reward sensitivity only predicting depression (β = -.07). The transdiagnostic role of punishment sensitivity and the discriminatory role of reward sensitivity support a hierarchical approach to RST and psychopathology.
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Dong M, Zeng LN, Lu L, Li XH, Ungvari GS, Ng CH, Chow IHI, Zhang L, Zhou Y, Xiang YT. Prevalence of suicide attempt in individuals with major depressive disorder: a meta-analysis of observational surveys. Psychol Med 2019; 49:1691-1704. [PMID: 30178722 DOI: 10.1017/s0033291718002301] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND Suicide attempt (SA), which is one of the strongest predictors of completed suicide, is common in major depressive disorder (MDD) but its prevalence across epidemiological studies has been mixed. The aim of this comprehensive meta-analysis was to examine the pooled prevalence of SA in individuals with MDD. METHODS A systematic literature search was conducted in PubMed, Embase, PsycINFO, Web of Science and Cochrane Library from their commencement date until 27 December 2017. Original studies containing data on prevalence of SA in individuals with MDD were analyzed. RESULTS In all, 65 studies with a total of 27 340 individuals with MDD were included. Using the random effects model, the pooled lifetime prevalence of SA was 31% [95% confidence interval (CI) 27-34%], 1-year prevalence was 8% (95% CI 3-14%) and 1-month prevalence was 24% (95% CI 15-34%). Subgroup analyses revealed that the lifetime prevalence of SA was significantly associated with the patient setting, study region and income level, while the 1-month prevalence of SA was associated with only the patient setting. CONCLUSION This meta-analysis confirmed that SA was common in individuals with MDD across the world. Careful screening and appropriate interventions should be implemented for SA in the MDD population.
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Affiliation(s)
- Min Dong
- Unit of Psychiatry,Faculty of Health Sciences,University of Macau,Macao SAR,China
| | - Liang-Nan Zeng
- Department of Neurosurgery,The Affiliated Hospital of Southwest Medical University,Luzhou,China
| | - Li Lu
- Unit of Psychiatry,Faculty of Health Sciences,University of Macau,Macao SAR,China
| | - Xiao-Hong Li
- The National Clinical Research Center for Mental Disorders, China & Center of Depression, Beijing Institute for Brain Disorders & Mood Disorders Center, Beijing Anding Hospital, Capital Medical University,Beijing,China
| | - Gabor S Ungvari
- University of Notre Dame Australia/Marian Centre,Perth,Australia
| | - Chee H Ng
- Department of Psychiatry,University of Melbourne,Melbourne, Victoria,Australia
| | - Ines H I Chow
- Unit of Psychiatry,Faculty of Health Sciences,University of Macau,Macao SAR,China
| | - Ling Zhang
- Department of Epidemiology and Health Statistics,School of Public Health, Capital Medical University & Beijing Municipal Key Laboratory of Clinical Epidemiology,Beijing,China
| | - Yuan Zhou
- CAS Key Laboratory of Behavioral Science & Magnetic Resonance Imaging Research Center, Institute of Psychology, Chinese Academy of Sciences,Beijing,China
| | - Yu-Tao Xiang
- Unit of Psychiatry,Faculty of Health Sciences,University of Macau,Macao SAR,China
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Nemes B, Cozman D. The relevance of personality assessment in estimating the risk of onset and the outcome of major depressive disorder. ACTA ACUST UNITED AC 2016; 89:212-5. [PMID: 27152070 PMCID: PMC4849377 DOI: 10.15386/cjmed-563] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 09/22/2015] [Accepted: 10/06/2015] [Indexed: 01/07/2023]
Abstract
In the past two decades, numerous studies have focused on the relationship between the psychobiological model of temperament and character and the development and evolution of major depressive disorder. This interest has been generated primarily because this particular model was developed as a tool for a comprehensive diagnosis of mental disorders. Such a diagnosis model, based on fewer diagnostic categories and a more phenomenological and person oriented approach seems to be supported by more recent research. The aim of this paper was to review the latest developments in this area, but in the context of the initial development of the psychobiological model of temperament and character, i.e. as a tool for the comprehensive diagnosis of depressed individuals. Data published so far supports the following observations: (1) high harm avoidance and low self-directedness are risk factors for the development of major depressive disorder, but further research is needed to clearly establish the role of the other dimensions or their facets as predictors for the development of a depressive episode; (2) although some evidence has been obtained so far regarding the use of harm avoidance, novelty seeking, reward dependence and cooperativeness in predicting treatment response in major depressive disorder, further research is needed to clarify and/or to replicate these findings; and (3) data on temperament and character dimensions related to relapse in major depressive disorder are insufficient, although some evidence has been brought to support the hypothesis that high harm avoidance scores, and low self-directedness and novelty seeking scores might serve as predictors; further prospective studies need to be carried out to establish their utility in this respect.
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Affiliation(s)
- Bogdan Nemes
- Department of Medical Psychology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Doina Cozman
- Department of Medical Psychology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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A meta-analysis of temperament and character dimensions in patients with mood disorders: Comparison to healthy controls and unaffected siblings. J Affect Disord 2016; 194:84-97. [PMID: 26803780 DOI: 10.1016/j.jad.2015.12.077] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 12/30/2015] [Indexed: 12/30/2022]
Abstract
BACKGROUND Cloninger's psychobiological model of personality has been extensively applied to subjects affected by mood disorders (MOOD). However, most studies are widely heterogeneous in terms of sample size, methods of assessment, and selection of participants. METHODS We conducted a systematic review of literature and a random effects meta-analysis of studies comparing at least two of the following groups: (a) adults with a primary MOOD diagnosis (Bipolar Disorder (BP) or major depressive disorder (MDD)), (b) their unaffected siblings (SIB) or (c) healthy subjects (HS), and reporting quantitative results from the Tridimensional Personality Questionnaire (TPQ) or the Temperament and Character Inventory (TCI). Subgroup, sensitivity and meta-regression analyses were also conducted. RESULTS High Harm Avoidance and low Self-Directedness were consistently associated with MOOD and SIB samples. BP was characterized by higher scores in Novelty Seeking and Self-Transcendence than HS, SIB and MDD. Age seemed to have a negative effect on Novelty Seeking and a positive effect on Harm Avoidance, Cooperativeness and Self-Transcendence. An euthymic mood state was associated with reduced Harm Avoidance, but increased Reward Dependence, Self-Directedness and Cooperativeness. LIMITATIONS The quality of the included studies varied and was relatively low. Moreover, publication bias and heterogeneity in the distribution of effect sizes may also have limited our results. CONCLUSION High Harm Avoidance and Low Self-Directedness may be trait markers for MOOD in general, while high Novelty Seeking and high Self-Transcendence may be specific to BP. Future studies are needed to disentangle the state-trait effect of each personality dimension.
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van Breda K, Collins M, Stein DJ, Rauch L. The COMT val(158)met polymorphism in ultra-endurance athletes. Physiol Behav 2015; 151:279-83. [PMID: 26253211 DOI: 10.1016/j.physbeh.2015.07.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 06/27/2015] [Accepted: 07/30/2015] [Indexed: 12/24/2022]
Abstract
UNLABELLED Chronic levels of physical activity have been associated with increased dopamine (D2) receptors resulting in increased sensitivity to dopamine release. The catechol-O-methyltransferase enzyme, responsible for dopamine degradation, contains a functional polymorphism, which plays an important role in dopamine regulation within the prefrontal cortex. This polymorphism has previously been shown to affect human cognition and personality. However, the effect of this polymorphism has not been shown in ultra-endurance athletes. AIM To examine the association of the COMT val(158)met variant with personality traits (harm avoidance, novelty seeking, reward dependence, resilience) and psychological distress (K10) of habitual physically active Ironman athletes compared to recreationally active controls. METHODS 51 ultra-endurance Ironman athletes and 56 recreationally active controls were genotyped for the catechol-O-methyltransferase val(158)met polymorphism. Of the 107 participants, 55 ultra-endurance athletes and 32 recreationally active controls completed online personality questionnaires (harm avoidance, novelty seeking, reward dependence, resilience) and a psychological distress questionnaire (K10). RESULTS The personality trait, harm avoidance (p=0.001) and psychological distress (p=0.003) were significantly lower in Ironman athlete participants. Novelty seeking was significantly higher (p=0.02) in Ironman athlete participants with a significantly higher (p=0.04) score in Met(158) homozygous allele carriers. CONCLUSION Chronic levels of physical activity, as seen in ultra-endurance athletes, show increased novelty seeking scores in Met(158) homozygous allele carriers.
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Affiliation(s)
- Keelyn van Breda
- Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, South Africa.
| | - Malcolm Collins
- Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, South Africa
| | - Dan J Stein
- Department of Psychiatry, MRC Unit on Anxiety & Stress Disorders, University of Cape Town, South Africa
| | - Laurie Rauch
- Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, South Africa
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Yoon DH, Kim SJ, Lee JH, Kim PM, Park DH, Ryu SH, Yu J, Ha JH. The Relationship between Type D Personality and Suicidality in Low-Income, Middle-Aged Adults. Psychiatry Investig 2015; 12:16-22. [PMID: 25670941 PMCID: PMC4310916 DOI: 10.4306/pi.2015.12.1.16] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 02/17/2014] [Accepted: 03/11/2014] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE Low-income adults are considered to be a group at high risk for suicide. We sought to examine the effect of type D personality and other socio-demographic factors on suicidality in low-income, middle-aged Koreans. METHODS In total, 306 low-income, middle-aged Koreans [age: 49.16±5.24 (40-59) years, 156 males, 150 females] were enrolled from the Korean National Basic Livelihood Security System. Socio-demographic data, including employment status, income, health, marital status, and educational attainment, were gathered. Beck's 19-item Scale for Suicidal Ideation (SSI) was applied to evaluate suicidality, and the DS14 was used to assess type D personality. RESULTS Unemployment (p<0.01) and absence of spouse (p=0.03) predicted higher SSI scores independent of other socioeconomic factors. All type D personality scores [i.e., negative affectivity (NA), social inhibition (SI), and total score] predicted higher SSI scores independent of all socioeconomic factors (all, p<0.001). Subjects with type D personality had higher SSI scores (p<0.001), and the association between suicidality and socio-demographic factors (employment or physical health) could be found only in subjects without type D personality. CONCLUSION Type D personality was a risk factor for suicide in low-income Koreans, independently from socio-economic factors. In addition, the socio-demographic factors were less prominently associated with suicidality in those with type D personality.
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Affiliation(s)
- Dae Hyun Yoon
- Department of Psychiatry, Gangnam Center, Seoul National University Hospital, Seoul, Republic of Korea
| | - Seog Ju Kim
- Department of Medicine, School of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Jong-Ha Lee
- Department of Social Welfare, Induk University, Seoul, Republic of Korea
| | - Pyo-Min Kim
- Department of Social Welfare, Soongsil University, Seoul, Republic of Korea
| | - Doo-Heum Park
- Department of Psychiatry, School of Medicine, Konkuk University, Seoul, Republic of Korea
| | - Seung Ho Ryu
- Department of Psychiatry, School of Medicine, Konkuk University, Seoul, Republic of Korea
| | - Jaehak Yu
- Department of Psychiatry, School of Medicine, Konkuk University, Seoul, Republic of Korea
| | - Jee Hyun Ha
- Department of Psychiatry, School of Medicine, Konkuk University, Seoul, Republic of Korea
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Woo YS, Jun TY, Jeon YH, Song HR, Kim TS, Kim JB, Lee MS, Kim JM, Jo SJ. Relationship of temperament and character in remitted depressed patients with suicidal ideation and suicide attempts--results from the CRESCEND study. PLoS One 2014; 9:e105860. [PMID: 25279671 PMCID: PMC4184783 DOI: 10.1371/journal.pone.0105860] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 07/29/2014] [Indexed: 11/18/2022] Open
Abstract
The aim of this study was to evaluate the Temperament and Character Inventory (TCI) scores of a sample of Korean patients with remitted depression who had attempted suicide and reported suicidal ideation and to compare their scores with those of remitted depressed patients without suicidal ideation. Adult depression patients who had completed 12 weeks of follow-up (N = 138) were divided into three groups: patients with a history of suicide attempts (N = 23); patients with current suicidal ideation (N = 59); and patients without current suicidal ideation (N = 56). After controlling for covariates, no significant differences were found among the three groups on any measure of temperament or character except self-directedness and self-transcendence. The self-transcendence scores of the lifetime suicide-attempt group were significantly higher compared with those of the suicidal-ideation group; post hoc analysis revealed that self-directedness was significantly lower in the suicide-attempt group compared with the non-suicidal group. The results from the present study suggest that remitted depression patients with a history of suicide attempts do not differ from non-attempters in temperament, but do differ in certain character traits.
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Affiliation(s)
- Young Sup Woo
- Department of Psychiatry, The Catholic University of Korea School of Medicine, Seoul, Korea
| | - Tae-Youn Jun
- Department of Psychiatry, The Catholic University of Korea School of Medicine, Seoul, Korea
| | - Yang-Hwan Jeon
- Department of Psychiatry, The Catholic University of Korea School of Medicine, Seoul, Korea
| | - Hoo Rim Song
- Department of Psychiatry, The Catholic University of Korea School of Medicine, Seoul, Korea
| | - Tae-Suk Kim
- Department of Psychiatry, The Catholic University of Korea School of Medicine, Seoul, Korea
| | - Jung-Bum Kim
- Department of Psychiatry, Keimyung University School of Medicine, Daegu, Korea
| | - Min-Soo Lee
- Department of Psychiatry, College of Medicine, Korea University, Seoul, Korea
| | - Jae-Min Kim
- Department of Psychiatry, Chonnam National University Medical School, Gwangju, Korea
| | - Sun-Jin Jo
- Department of Preventive Medicine, The Catholic University of Korea School of Medicine, Seoul, Korea
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Influence of differentially expressed genes from suicide post-mortem study on personality traits as endophenotypes on healthy subjects and suicide attempters. Eur Arch Psychiatry Clin Neurosci 2014; 264:423-32. [PMID: 24241531 DOI: 10.1007/s00406-013-0469-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Accepted: 10/29/2013] [Indexed: 12/17/2022]
Abstract
Although a genetic contribution to the complex aetiology of suicidal behaviour has been suggested since many years, the attempt to identify specific genes related to suicide has led to contrasting results. In a post-mortem study on suicide, we previously detected several differentially expressed genes which, however, have not been subsequently associated with suicidal behaviour, or only nominally. Therefore, personality traits may represent good intermediate endophenotypes. Our primary aim was to investigate the potential modulation of several single-nucleotide polymorphisms (SNPs) of the same previously investigated genes (S100A13, EFEMP1, PCDHB5, PDGFRB, CDCA7L, SCN2B, PTPRR, MLC1 and ZFP36) on personality traits, as measured with the Temperament and Character Inventory (TCI), in a German sample composed of 287 healthy subjects (males: 123, 42.9 %; mean age: 45.2 ± 14.9 years) and in 111 psychiatric patients who attempted suicide (males: 43, 38.6 %; mean age: 39.2 ± 13.6 years). Multivariate analysis of covariance was used to test possible influence of single SNPs on TCI scores. Genotypic, allelic and haplotypic analyses have been performed. Controlling for sex, age and educational level, genotypic analyses showed a modulation of EFEMP1 rs960993 and rs2903838 polymorphisms on both harm avoidance and self-directedness in healthy subjects. Interestingly, we could replicate these associations in haploblocks within controls (p < 0.0001) and in the independent sample of suicide attempters for harm avoidance (p < 0.00001), a phenotype highly associated with suicidal behaviour. This study suggests that EFEMP1 SNPs, never investigated in association with suicidal behaviour and related personality, could be involved in its modulation in healthy subjects as well as in suicide attempters.
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Seo HJ, Jung YE, Jeong S, Kim JB, Lee MS, Kim JM, Yim HW, Jun TY. Personality traits associated with suicidal behaviors in patients with depression: the CRESCEND study. Compr Psychiatry 2014; 55:1085-92. [PMID: 24794639 DOI: 10.1016/j.comppsych.2014.03.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/24/2014] [Accepted: 03/25/2014] [Indexed: 11/26/2022] Open
Abstract
The aim of the current study was to identify personality traits associated with suicidal behavior in patients with depression. Of the 1183 patients screened for an observational cohort study of depression, 334 (28.2%) who completed the Temperament and Character Inventory (TCI) were included in these analyses. To minimize the effect of current mood state, the TCI was performed 12 weeks after initiation of treatment, and we adjusted for the severity of depression. Of the 344 participants, 59 had a lifetime history of at least one suicide attempt, 37 had a lifetime history of multiple suicide attempts, and 5 attempted suicide during the 12-week study period. At baseline, patients with a lifetime history of at least one suicide attempt, a lifetime history of multiple suicide attempts, and a suicide attempt during the study period expressed more serious current suicidal ideation than did those without such a history, despite the absence of differences among the groups in the severity of depressive and anxiety symptoms. Of the seven personality scales of the TCI, lower scores on the self-directedness scale of the character dimension were associated with a history of at least one suicide attempt (OR [95% CI], 0.91 [0.87-0.96]; p<0.001), a history of multiple suicide attempts (0.91 [0.86-0.97]; p=0.003), and suicide attempts during study period (0.80 [0.69-0.94]; p=0.006). These findings suggest that depressed patients with a history of suicidal behavior differ from non-attempters with regard to personality traits, especially the character dimension of self-directedness. It is noteworthy that this result emerged after controlling for the effect of current mood state.
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Affiliation(s)
- Ho-Jun Seo
- Department of Psychiatry, St. Vincent Hospital, College of Medicine, The Catholic University of Korea, Suwon, Republic of Korea; Clinical Research Center for Depression, Seoul, Republic of Korea
| | - Young-Eun Jung
- Department of Psychiatry, School of Medicine, Jeju National University, Jeju, Korea; Clinical Research Center for Depression, Seoul, Republic of Korea
| | - Seunghee Jeong
- Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Clinical Research Center for Depression, Seoul, Republic of Korea
| | - Jung-Bum Kim
- Department of Psychiatry, Keimyung University, School of Medicine, Daegu, Republic of Korea; Clinical Research Center for Depression, Seoul, Republic of Korea
| | - Min-Soo Lee
- Department of Psychiatry, College of Medicine, Korea University, Seoul, Republic of Korea; Clinical Research Center for Depression, Seoul, Republic of Korea
| | - Jae-Min Kim
- Department of Psychiatry, Chonnam National University Medical School, Kwangju, Republic of Korea; Clinical Research Center for Depression, Seoul, Republic of Korea
| | - Hyeon Woo Yim
- Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Clinical Research Center for Depression, Seoul, Republic of Korea
| | - Tae-Youn Jun
- Department of Psychiatry, St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Clinical Research Center for Depression, Seoul, Republic of Korea.
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Exploring personality features in patients with affective disorders and history of suicide attempts: a comparative study with their parents and control subjects. DEPRESSION RESEARCH AND TREATMENT 2014; 2014:291802. [PMID: 24724019 PMCID: PMC3958670 DOI: 10.1155/2014/291802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 12/18/2013] [Accepted: 01/29/2014] [Indexed: 11/17/2022]
Abstract
Personality traits are important candidate predictors of suicidal behavior. Several studies have reported an association between personality/temperament traits and suicidal behavior, suggesting personality traits as intermediary phenotypes related to suicidal behavior. Thus, it is possible that suicide attempts can be accounted for by increased familial rates of risk personality traits. The aim of this work was to evaluate personality traits in affective disorder patients with attempted suicide and to compare them with the personality trait scores of their parents. In addition, ITC scores in the two groups were compared with a healthy control sample. The patients evaluated met the DSM-IV criteria for major depression disorder or dysthymia and had a documented history of suicide attempts. Psychiatric diagnoses of patients and parents were done according to the SCID-I and the personality was assessed using the Temperament and Character Inventory. We analyzed 49 suicide attempt subjects and their parents (n = 95) and 89 control subjects. We observed that temperament and character dimensions were similar between patients and their parents (P > 0.05). In particular, we observed that high HA and low P, SD, and CO were shared among families. Our study is the first to report that the personality traits of affective disorder patients with a history of attempted suicide are shared between patients and their parents.
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Mitsui N, Asakura S, Shimizu Y, Fujii Y, Kako Y, Tanaka T, Oba K, Inoue T, Kusumi I. Temperament and character profiles of Japanese university students with depressive episodes and ideas of suicide or self-harm: a PHQ-9 screening study. Compr Psychiatry 2013; 54:1215-21. [PMID: 23849616 DOI: 10.1016/j.comppsych.2013.05.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Revised: 05/19/2013] [Accepted: 05/23/2013] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE The aim of our study was to reveal the personality traits of individuals with major and other depressive episodes among the young adult population. Furthermore, character traits of individuals with ideas of suicide or self-harm were also investigated in this study. METHODS The subjects of this study were 1421 university students who completed the Patient Health Questionnaire (PHQ-9) and the Temperament and Character Inventory (TCI). The subjects were divided into three separate groups: the major depressive episode group (N = 41), the other depressive episode group (N = 97), and the non-depressive controls (N = 1283). This separation was achieved using the PHQ-9 algorithm diagnosis. We compared the TCI scores using an analysis of variance. Moreover, the Cochran-Armitage trend test was used to determine the diagnosis, ideas of suicide or self-harm, and analysis of character profiles. RESULTS The major depressive episode group had significantly higher HA (P < 0.001), lower RD (P < 0.001), lower SD (P < 0.001), and lower C (P < 0.001) scores than non-depressive controls. The other depressive episode group had significantly higher HA scores (P < 0.001) and lower SD scores (P < 0.001) than non-depressive controls. The Cochran-Armitage trend test revealed that the prevalence of depressive episodes decreased as the character profiles matured (χ(2)(trend) = 57.2, P < 0.0001). The same tendency was observed in individuals who had ideas of suicide or self-harm (χ(2)(trend) = 49.3, P < 0.0001). CONCLUSION High HA and low SD scores were common personality traits among young adults with major depressive episodes. Furthermore, the immaturity of character profiles was clearly associated with depressive episodes and ideas of suicide or self-harm.
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Affiliation(s)
- Nobuyuki Mitsui
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
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Influence of temperament and character on resilience. Compr Psychiatry 2013; 54:1105-10. [PMID: 23731898 DOI: 10.1016/j.comppsych.2013.05.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 04/27/2013] [Accepted: 05/01/2013] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE The purpose of this study was to examine the influence of temperament and character on resilience. METHODS A total of 4355 participants completed two questionnaires: the Conner-Davison Resilience Scale (CD-RISC) and the Temperament and Character Inventory-Revised Short (TCI-RS). We used Pearson's correlations to evaluate the correlation between the dimensions of the TCI and the CD-RISC. To determine the most influential TCI dimension with respect to the CD-RISC, a backward multiple regression analysis was performed. RESULTS The resilience of both men and women was positively correlated with persistence, self-directedness, and cooperativeness. Conversely, harm avoidance was negatively correlated with resilience. In addition, reward dependence in men and self-transcendence in women were positively correlated with resilience. In the multiple regression analysis, persistence, self-directedness, and harm avoidance significantly predicted resilience after adjusting for age and gender. CONCLUSION This results show that social support is affected by personality, which consists of both temperament and character. High persistence and self-directedness as well as low harm avoidance are found to contribute to a better stress response.
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