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Serravalle L, Trespalacios F, Ellenbogen MA. Hypothalamic-pituitary-adrenal axis functioning in offspring of parents with a major affective disorder: a meta-analytic review. Eur Child Adolesc Psychiatry 2024:10.1007/s00787-024-02553-0. [PMID: 39207496 DOI: 10.1007/s00787-024-02553-0] [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] [Received: 08/30/2023] [Accepted: 08/01/2024] [Indexed: 09/04/2024]
Abstract
Because the offspring of parents with an affective disorder (OAD) are at high risk for developing mental disorders, and persons with an affective disorder (AD) show dysfunctional hypothalamic-pituitary-adrenal (HPA) axis activity, changes in HPA functioning in OAD might be an etiological risk factor that precedes the development of ADs. The primary aim of the meta-analysis was to quantitatively summarize the existing data on different indices of diurnal cortisol in the OAD. The secondary aim was to explore potential moderators of this relation. Following PRISMA guidelines, we included 26 studies (3052 offspring) on diurnal cortisol in our meta-analysis after an initial screening of 3408 articles. Intercept-only and meta-regression models were computed using the robust variance estimation method. Analyses examining mean cortisol levels at discrete timepoints, total cortisol output, and the cortisol rise in response to awakening (CAR) were conducted separately. The results demonstrated that the OAD had higher mean levels of cortisol at different timepoints throughout the day compared to controls (Hedge's g = 0.21). There was evidence of publication bias in studies examining CAR, such that effect sizes were positively biased. The present findings are consistent with a meta-analysis showing elevated cortisol in youth having an AD. Notable limitations across studies include the method of cortisol measurement and assessment of ADs. Altogether, these results highlight the fact that increased cortisol levels may act as a potential neuroendocrine antecedent and/or risk factor for the development of ADs among high risk youth.
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Affiliation(s)
- Lisa Serravalle
- Department of Psychology, Centre for Research in Human Development, Concordia University, 7141 Sherbrooke W., Montréal, QC, H4B 1R6, Canada
| | - Florencia Trespalacios
- Department of Psychology, Centre for Research in Human Development, Concordia University, 7141 Sherbrooke W., Montréal, QC, H4B 1R6, Canada
| | - Mark A Ellenbogen
- Department of Psychology, Centre for Research in Human Development, Concordia University, 7141 Sherbrooke W., Montréal, QC, H4B 1R6, Canada.
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2
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Leung CY, Kyung M, Weiss SJ. Greater perceived stress and lower cortisol concentration increase the odds of depressive symptoms among adolescents. J Affect Disord 2024; 365:41-48. [PMID: 39142582 DOI: 10.1016/j.jad.2024.08.053] [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] [Received: 03/18/2024] [Revised: 07/18/2024] [Accepted: 08/11/2024] [Indexed: 08/16/2024]
Abstract
BACKGROUND Adolescent depression is a major public health concern. Although stress has been linked to more severe depression, its association with mild depression among adolescents is not understood. This study assesses the relationship between perceived stress and cortisol (a physiologic measure of stress) and examines the relationships between these stress measures and depressive symptoms among adolescents 13-19 years of age. METHODS Stress was measured with the Perceived Stress Scale-10 and through salivary sampling for cortisol four times throughout the day. The Patient Health Questionnaire-9 was used to measure depressive symptoms (range 0-27), where ≥5 indicated the threshold for experiencing at least mild depressive symptoms. Spearman coefficients and multiple logistic regression models were used to examine the relationships between our variables of interest. RESULTS The mean age of the 73 participants in our study was 15.82 years. 49 % of the participants reported depressive symptoms (PHQ-9 score ≥ 5). Both higher perceived stress (odds ratio [OR] = 1.11, p = 0.022) and lower cortisol (area-under-the curve; AUCG) (OR = 0.99, p = 0.009) were associated with increased odds of having depressive symptoms. LIMITATIONS Few participants had moderate to severe PHQ-9 depression, therefore our study reported findings on mild depression or greater. CONCLUSIONS Perceived stress and cortisol appear to reflect distinct, independent components of the stress experience. However, both greater perceived stress and less circulating cortisol may indicate difficulties in regulating stress as potential factors underlying depressive symptoms. Future research should focus on the different types of adolescent stressors and the importance of routine screening of stress and depression, including mild depression.
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Affiliation(s)
- Cherry Y Leung
- Department of Community Health Systems, School of Nursing, University of California San Francisco, San Francisco, CA, USA.
| | - Minjung Kyung
- The Catholic University of Korea, Seoul, Republic of Korea
| | - Sandra J Weiss
- Department of Community Health Systems, School of Nursing, University of California San Francisco, San Francisco, CA, USA
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3
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Meng X, Zhang S, Zhou S, Ma Y, Yu X, Guan L. Putative Risk Biomarkers of Bipolar Disorder in At-risk Youth. Neurosci Bull 2024:10.1007/s12264-024-01219-w. [PMID: 38710851 DOI: 10.1007/s12264-024-01219-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 03/08/2024] [Indexed: 05/08/2024] Open
Abstract
Bipolar disorder is a highly heritable and functionally impairing disease. The recognition and intervention of BD especially that characterized by early onset remains challenging. Risk biomarkers for predicting BD transition among at-risk youth may improve disease prognosis. We reviewed the more recent clinical studies to find possible pre-diagnostic biomarkers in youth at familial or (and) clinical risk of BD. Here we found that putative biomarkers for predicting conversion to BD include findings from multiple sample sources based on different hypotheses. Putative risk biomarkers shown by perspective studies are higher bipolar polygenetic risk scores, epigenetic alterations, elevated immune parameters, front-limbic system deficits, and brain circuit dysfunction associated with emotion and reward processing. Future studies need to enhance machine learning integration, make clinical detection methods more objective, and improve the quality of cohort studies.
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Affiliation(s)
- Xinyu Meng
- Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, 100191, China
| | - Shengmin Zhang
- Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, 100191, China
| | - Shuzhe Zhou
- Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, 100191, China
| | - Yantao Ma
- Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, 100191, China
| | - Xin Yu
- Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, 100191, China
| | - Lili Guan
- Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, 100191, China.
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4
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Kirsch D, Preston A, Tretyak V, Le V, Weber W, Strakowski S, Lippard E. Neural functional connectivity changes to psychosocial stress in young adults with bipolar disorder and preliminary associations with clinical trajectories. Bipolar Disord 2022; 24:298-309. [PMID: 34532945 PMCID: PMC8926937 DOI: 10.1111/bdi.13127] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 07/06/2021] [Accepted: 09/12/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Stress-related mechanisms are implicated in the pathophysiology of bipolar disorder and may contribute to heterogeneity in illness course. Yet, there is a lack of study investigating the neural mechanisms underlying the stress response in this condition. This study investigated changes in amygdala activation and functional connectivity in response to acute psychosocial stress in young adults with bipolar disorder and explored relations with clinical phenotype and prospective mood symptoms. METHODS 42 young adults [19 with bipolar disorder, agemean ± SD =21.4 ± 2.2 years] completed a modified version of the Montreal Imaging Stress Task. Amygdala activation and functional connectivity with prefrontal cortex (PFC) regions of interest was calculated for control and stress conditions. Main effects of group, condition, and group by condition interaction on amygdala activation and connectivity were modeled. A subset of bipolar participants completed 1-year follow-up assessments. Relations between neural responses to stress with concurrent substance use and prospective mood symptoms were explored. RESULTS There were no between-group differences in amygdala activation or functional connectivity during the control condition. Increased right amygdala-right rostral PFC (rPFC) functional connectivity to stress was observed in bipolar disorder, compared to typically developing controls. In bipolar disorder, greater increase in right amygdala-right rPFC functional connectivity to stress was associated with less frequent cannabis use, and prospectively with shorter duration and lower severity of depression symptoms over follow-up. CONCLUSION Results from this preliminary study suggest differences in frontolimbic functional connectivity responses to stress in young adults with bipolar disorder and associations with cannabis use and prospective mood symptoms.
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Affiliation(s)
- D.E. Kirsch
- Department of Psychiatry and Behavioral Sciences, Dell Medical School, University of Texas, Austin, TX, USA,Waggoner Center for Alcohol and Addiction Research, University of Texas, Austin, TX, USA,Institute for Neuroscience, University of Texas, Austin, TX, USA
| | - A. Preston
- Department of Psychiatry and Behavioral Sciences, Dell Medical School, University of Texas, Austin, TX, USA
| | - V. Tretyak
- Department of Psychiatry and Behavioral Sciences, Dell Medical School, University of Texas, Austin, TX, USA,Waggoner Center for Alcohol and Addiction Research, University of Texas, Austin, TX, USA,Department of Psychology, University of Texas, Austin, TX, USA
| | - V. Le
- Department of Psychiatry and Behavioral Sciences, Dell Medical School, University of Texas, Austin, TX, USA
| | - W. Weber
- Department of Psychiatry and Behavioral Sciences, Dell Medical School, University of Texas, Austin, TX, USA
| | - S.M. Strakowski
- Department of Psychiatry and Behavioral Sciences, Dell Medical School, University of Texas, Austin, TX, USA,Waggoner Center for Alcohol and Addiction Research, University of Texas, Austin, TX, USA,Institute for Neuroscience, University of Texas, Austin, TX, USA,Department of Psychology, University of Texas, Austin, TX, USA
| | - E.T.C. Lippard
- Department of Psychiatry and Behavioral Sciences, Dell Medical School, University of Texas, Austin, TX, USA,Waggoner Center for Alcohol and Addiction Research, University of Texas, Austin, TX, USA,Institute for Neuroscience, University of Texas, Austin, TX, USA,Department of Psychology, University of Texas, Austin, TX, USA,Institute of Early Life Adversity Research, University of Texas, Austin, TX, USA
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5
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Jia R, Carlisle S, Vedhara K. The Association of Lifestyle and Mood with Long-Term Levels of Cortisol: A Systematic Review. COGENT PSYCHOLOGY 2022. [DOI: 10.1080/23311908.2022.2036487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Ru Jia
- School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Sophie Carlisle
- School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Kavita Vedhara
- School of Medicine, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
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Van Puyvelde M, Rietjens G, Helmhout P, Mairesse O, Van Cutsem J, Pattyn N. The submariners' sleep study. A field investigation of sleep and circadian hormones during a 67-days submarine mission with a strict 6h-on/6h-off watch routine. J Appl Physiol (1985) 2022; 132:1069-1079. [PMID: 35142558 DOI: 10.1152/japplphysiol.00130.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The submarine working and living environment is an isolated, confined, and extreme (ICE) environment where a continuous on-watch is required to fulfill the tactical objectives. The current study examined whether a physiological and behavioral adjustment to an operational watch standing scheme occurred in terms of hormonal secretion (i.e., melatonin and cortisol) and sleep during a 67-days undersea mission. The crew followed a strict scheme of watch-on blocks at 0:00-06:00 h and at 12:00-18:00 h (group 1, diurnal sleep group) or watch-on blocks at 06:00-12:00 h and 18:00-24:00 h (group 2, nocturnal sleep group). We sampled saliva during the operational blocks over a 24h period at day 55 of the mission and collected sleep actigraphy data during the entire mission in 10 participants. Sleep showed a biphasic split pattern with significantly unequal distributions of total sleep time (TST) and sleep efficiency (SE) between the two sleeping blocks, i.e., one long and one short sleep bout. Melatonin secretion showed no adjustment at the end of the mission to the watch standing blocks, following an endogenous circadian rhythm independent from the social zeitgebers with indications of a phase shift. Cortisol secretion however matched the biphasic work-sleep shift routine. Human physiology does not fully obey operational needs and there are differences in adjustment between melatonin and cortisol. A watch standing schedule that provides a balance between physiology and operationality still needs to be established. The potential adaptation effects of bright light therapy and melatonin supplementation should be investigated in future research.
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Affiliation(s)
- Martine Van Puyvelde
- VIPER Research Unit, LIFE department, Royal Military Academy, Brussels, Belgium.,Brain, Body and Cognition, Department of Psychology, Faculty of Psychology and Educational Sciences, Vrije Universiteit Brussel, Brussels, Belgium.,Clinical and Lifespan Psychology, Department of Psychology and Educational Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Gerard Rietjens
- MFYS-BLITS, Human Physiology Department, Vrije Universiteit Brussel, Brussels, Belgium.,Training Medicine and Training Physiology, Army Command, Directory of Personnel, Royal Netherlands Army, Utrecht, The Netherlands
| | - Pieter Helmhout
- Training Medicine and Training Physiology, Army Command, Directory of Personnel, Royal Netherlands Army, Utrecht, The Netherlands
| | - Olivier Mairesse
- VIPER Research Unit, LIFE department, Royal Military Academy, Brussels, Belgium.,Brain, Body and Cognition, Department of Psychology, Faculty of Psychology and Educational Sciences, Vrije Universiteit Brussel, Brussels, Belgium.,Sleep Laboratory and Unit for Clinical Chronobiology, CHU Brugmann, Brussels, Belgium
| | - Jeroen Van Cutsem
- VIPER Research Unit, LIFE department, Royal Military Academy, Brussels, Belgium.,MFYS-BLITS, Human Physiology Department, Vrije Universiteit Brussel, Brussels, Belgium
| | - Nathalie Pattyn
- VIPER Research Unit, LIFE department, Royal Military Academy, Brussels, Belgium.,MFYS-BLITS, Human Physiology Department, Vrije Universiteit Brussel, Brussels, Belgium
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7
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Klimes-Dougan B, Papke V, Carosella KA, Wiglesworth A, Mirza SA, Espensen-Sturges TD, Meester C. Basal and reactive cortisol: A systematic literature review of offspring of parents with depressive and bipolar disorders. Neurosci Biobehav Rev 2022; 135:104528. [PMID: 35031342 DOI: 10.1016/j.neubiorev.2022.104528] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 01/06/2022] [Accepted: 01/07/2022] [Indexed: 11/19/2022]
Abstract
One of the most consistent biological findings in the study of affective disorders is that those with depression commonly show abnormal cortisol response, which suggests dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis. Children of parents with mood disorders offer the opportunity to explore the biological pathways that may confer risk for psychopathology. This review explores basal and reactive cortisol in the offspring of parents who are currently depressed or have had a history of a depressive or bipolar disorder. Using PRISMA guidelines, search terms yielded 2002 manuscripts. After screening, 87 of these manuscripts were included. Results from the literature suggest that while the degree and direction of dysregulation varies, offspring of a parent with depression tend to show elevations in both basal (particularly morning and evening) and reactive (tentatively for social stressors) cortisol levels. There were few studies focused on offspring of parents with bipolar disorder. This review also discusses implications and recommendations for future research regarding the HPA axis in the intergenerational transmission of depressive disorders.
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Affiliation(s)
- Bonnie Klimes-Dougan
- Department of Psychology, University of Minnesota, 75 East River Parkway, Minneapolis, MN 55455, USA.
| | - Victoria Papke
- Department of Psychology, University of Minnesota, 75 East River Parkway, Minneapolis, MN 55455, USA
| | - Katherine A Carosella
- Department of Psychology, University of Minnesota, 75 East River Parkway, Minneapolis, MN 55455, USA
| | - Andrea Wiglesworth
- Department of Psychology, University of Minnesota, 75 East River Parkway, Minneapolis, MN 55455, USA
| | - Salahudeen A Mirza
- Department of Psychology, University of Minnesota, 75 East River Parkway, Minneapolis, MN 55455, USA
| | - Tori D Espensen-Sturges
- Department of Psychology, University of Minnesota, 75 East River Parkway, Minneapolis, MN 55455, USA
| | - Christina Meester
- Department of Psychology, University of Minnesota, 75 East River Parkway, Minneapolis, MN 55455, USA
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8
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Yang F, Hong X, Tao J, Chen Y, Zhang Y, Xiao H. Hair cortisol, social support, personality traits, and clinical course: differences in schizophrenia and bipolar disorder. Brain Behav 2021; 11:e2412. [PMID: 34775692 PMCID: PMC8671778 DOI: 10.1002/brb3.2412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/01/2021] [Accepted: 10/19/2021] [Indexed: 11/08/2022] Open
Abstract
OBJECTIVE This study aimed to investigate the differences in the relationship between hair cortisol concentration (HCC) and psychosocial stress, social support, clinical features, clinical course, and outcome in schizophrenia and bipolar disorder. METHODS A total of 109 schizophrenia patients, 93 bipolar disorder patients and 86 healthy controls between 18 and 60 years old were enrolled in the study. Linear regression and factor analysis were employed to examine and compare the relationship between HCC and childhood trauma, the number of stressful life events, the amount of social support in the three months before the hair cortisol assessment, clinical fearures, clinical course, and outcome in schizophrenia and bipolar disorder. RESULTS HCC is significantly associated with clinical syndromes, including depression-anxiety factor of Positive and Negative Syndrome Scale in schizophrenia patients, and thought disorder in bipolar disorder patients. However, HCC is positively related to social support and personality traits only in schizophrenia patients but not in bipolar disorder patients. Factor analysis indicates schizophrenia and bipolar disorder share a very similar but somewhat different structure in terms of HCC, psychosocial stress, social support, clinical features, clinical course, and outcome. CONCLUSION Findings support that schizophrenia and bipolar disoder have a significant overlap in both clinical characteristics and enviromental risk factors. Aberrant HCC contributes to the complexity of clinical characteristics mainly in schizophrenia.
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Affiliation(s)
- Fuzhong Yang
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiangfei Hong
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jing Tao
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yupeng Chen
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yanbo Zhang
- Department of Psychiatry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Hua Xiao
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
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9
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[Do digital technologies at work impact mental health of employees?]. DER NERVENARZT 2021; 92:1111-1120. [PMID: 34608534 PMCID: PMC8489371 DOI: 10.1007/s00115-021-01192-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 08/08/2021] [Indexed: 11/29/2022]
Abstract
Hintergrund Die traditionelle Arbeitsstressforschung identifizierte eine große Zahl von Stressoren. Die Technik als Stressquelle stand dagegen lange nicht im Fokus des Interesses. Fragestellung Dieser Artikel beschreibt das Konzept des Technostresses und diskutiert mögliche Risiken und Chancen digitaler Technologien bei der Arbeit und deren Auswirkungen auf die psychische Gesundheit. Material und Methode Übersicht zur Konzeptualisierung von Technostress, potenzieller Wirkmechanismen und Zusammenfassung empirischer Ergebnisse zum Einfluss auf die psychische Gesundheit. Ergebnisse Bisher wurden mehrere Domänen von Technostress definiert. Obgleich die Evidenzbasis schmal ist und Studien mit methodischen Einschränkungen behaftet sind, so legen erste Ergebnisse zumindest nahe, dass sich bestimmte Arten von technischem Stress bei der Arbeit ungünstig auf die psychische Gesundheit auswirken können. Zugleich können digitale Technologien auch positive Auswirkungen auf das psychische Wohlbefinden von Arbeitnehmern haben, wenn sie z. B. eine bessere Arbeitsorganisation ermöglichen. Schlussfolgerung Die Digitalisierung der Arbeit scheint sowohl Chancen als auch Risiken für die psychische Gesundheit der Beschäftigten zu haben. Implikationen für weitere Forschung in diesem sich entwickelnden Feld werden herausgearbeitet.
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10
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Du Preez A, Eum J, Eiben I, Eiben P, Zunszain PA, Pariante CM, Thuret S, Fernandes C. Do different types of stress differentially alter behavioural and neurobiological outcomes associated with depression in rodent models? A systematic review. Front Neuroendocrinol 2021; 61:100896. [PMID: 33359461 DOI: 10.1016/j.yfrne.2020.100896] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/26/2020] [Accepted: 12/15/2020] [Indexed: 12/19/2022]
Abstract
Cataloguing the effects of different types of stress on behaviour and physiology in rodent models has not been comprehensively attempted. Here, we systematically review whether chronic exposure to physical stress, psychosocial stress, or both types of stress can induce different behavioural and neurobiological outcomes in male and female rodents. We found that physical stress consistently increased depressive-like behaviour, impaired social interaction and decreased body weight, while psychosocial stress consistently increased both anxiety- and depressive-like behaviour, impaired social interaction and learning and memory, increased HPA axis activity, peripheral inflammation and microglial activation, and decreased hippocampal neurogenesis in male rodents. Moreover, we found that the combined effect of both stress types resulted in a more severe pathological state defined by increased anxiety- and depressive-like behaviour, impaired social interaction and learning and memory, increased HPA axis activity and central inflammation, and reduced hippocampal neurogenesis and neural plasticity in male rodents. Phenotypes for females were less consistent, irrespective of the type of stress exposure, on account of the limited number of studies using females. This review highlights that the type of stress may indeed matter and will help animal researchers to more appropriately choose a stress/depression model that fits their research purposes.
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Affiliation(s)
- Andrea Du Preez
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK.
| | - Josephine Eum
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | - Inez Eiben
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | - Paola Eiben
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | - Patricia A Zunszain
- Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | - Carmine M Pariante
- Department of Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | - Sandrine Thuret
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
| | - Cathy Fernandes
- Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK; MRC Centre for Neurodevelopmental Disorders, King's College London, UK
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11
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Abstract
Hormones have a crucial part in the progress and manifestation of a wide variety of different behaviors. The main influence of the neuroendocrine system on behavior is its action on the neurobiology of neuropsychiatric disorders and its relationship with the pharmacodynamics of medicines. Of all the neuroendocrine axes, the hypothalamic-pituitary-adrenal (HPA) axis has been the most extensively studied. There is evidence that disturbance in the HPA axis, the primary stress hormone system, could increase treatment resistance and relapse, worsen illness outcome, and cause cognitive deficits. Glucocorticoids mediate their actions in negative feedback binding in two different cytoplasmatic receptors described as mineralocorticoid receptors (MRs) and glucocorticoid receptors (GRs). Different psychopathologies underlying bipolar disorders are supposed to involve persistent dysfunctions in the expression and role of both MR and GR in the hippocampus. We review and analyze the evidence related to the correlation between bipolar disorders and the consequences and impact of stressful life events on the HPA axis, exploring the importance of these findings in bipolar disorders and as potential new targets for treatment.
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Affiliation(s)
- Mario F Juruena
- Centre for Affective Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
| | - Anthony J Cleare
- Centre for Affective Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Allan H Young
- Centre for Affective Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
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12
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Abstract
Endophenotypes are measurable markers of genetic vulnerability to current or future disorder. Autism spectrum disorder (ASD) is well-suited to be examined within an endophenotype framework given past and current emphases on the broader autism phenotype and early detection. We conducted a scoping review to identify potential socially-related endophenotypes of ASD. We focused on paradigms related to sociality (e.g., theory of mind (TOM), social attention), which comprise most of this literature. We integrated findings from traditional behavioral paradigms with brain-based measures (e.g., electroencephalography, functional magnetic resonance imaging). Broadly, infant research regarding social attention and responsivity (Research Domain Criteria (RDoC) domain of affiliation) and attention to faces and voices (social communication) finds consistent abnormality in vulnerable infant siblings. Several additional paradigms that have shown differences in vulnerable infants and young children include animacy perception tasks (perception and understanding of others), measures of recognition and response to familiar faces (attachment), and joint attention and false-belief tasks (understanding mental states). Research areas such as alexithymia (the perception and understanding of self), empathic responding, and vocal prosody may hold interest; however, challenges in measurement across populations and age ranges is a limiting factor. Future work should address sex differences and age dependencies, specificity to ASD, and heterogeneous genetic pathways to disorder within samples individuals with ASD and relatives.
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13
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Abstract
PURPOSE OF REVIEW The ongoing digitalization has profound consequences for work in modern economies. It is, therefore, important to investigate if digital technologies increase stress at work (i.e. 'technostress') and lead to impaired mental health. This article describes the concept of technostress and discusses possible risks and opportunities of digital technologies at work and their effect on mental health. RECENT FINDINGS Studies report that the use of digital technologies is associated with specific psychosocial demands (e.g. higher workload, complexity, conflicts between work and other life domains) and resulting psychobiological stress reactions. It is, however, still unclear if this kind of technostress causes mental disorders because epidemiological studies are missing. Yet, an increasing number of studies suggests that well designed digital work may promote good health if it optimizes work organization or enables greater flexibility, and increases control and autonomy at work. SUMMARY Digitalization of work seems to have both opportunities and risks for the mental health of employees. The number of studies is currently limited and further research is necessary to describe the advantages and disadvantages more precisely.
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14
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Mazer AK, Cleare AJ, Young AH, Juruena MF. Bipolar affective disorder and borderline personality disorder: Differentiation based on the history of early life stress and psychoneuroendocrine measures. Behav Brain Res 2019; 357-358:48-56. [PMID: 29702176 DOI: 10.1016/j.bbr.2018.04.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 03/30/2018] [Accepted: 04/11/2018] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Borderline Personality Disorder (BPD) and Bipolar Affective Disorder (BD) have clinical characteristics in common which often make their differential diagnosis difficult. The history of early life stress (ELS) may be a differentiating factor between BPD and BD, as well as its association with clinical manifestations and specific neuroendocrine responses in each of these diagnoses. OBJECTIVE Assessing and comparing patients with BD and BPD for factors related to symptomatology, etiopathogenesis and neuroendocrine markers. METHODOLOGY The study sample consisted of 51 women, divided into 3 groups: patients with a clinical diagnosis of BPD (n = 20) and BD (n = 16) and healthy controls (HC, n = 15). Standardized instruments were used for the clinical evaluation, while the history of ELS was quantified with the Childhood Trauma Questionnaire (CTQ), and classified according to the subtypes: emotional abuse, physical abuse, sexual abuse, emotional neglect and physical neglect. The functioning of the hypothalamic-pituitary-adrenal (HPA) axis was evaluated by measuring a single plasma cortisol sample. RESULTS Patients with BPD presented with more severe psychiatric symptoms of: anxiety, impulsivity, depression, hopelessness and suicidal ideation than those with BD. The history of ELS was identified as significantly more prevalent and more severe in patients (BPD and BP) than in HC. Emotional abuse, emotional neglect and physical neglect also showed differences and were higher in BPD than BD patients. BPD patients had greater severity of ELS overall and in the subtypes of emotional abuse, emotional neglect and physical neglect than BD patients. The presence of ELS in patients with BPD and BP showed significant difference with lower cortisol levels when compared to HC. The endocrine evaluation showed no significant differences between the diagnoses of BPD and BD. Cortisol measured in patients with BPD was significantly lower compared to HC in the presence of emotional neglect and physical neglect. A significant negative correlation between the severity of hopelessness vs cortisol; and physical neglect vs cortisol were found in BPD with ELS. The single cortisol sample showed a significant and opposite correlations in the sexual abuse diagnosis-related groups, being a negative correlation in BD and positive in BPD. DISCUSSION Considering the need for a multi-factorial analysis, the differential diagnosis between BPD and BD can be facilitated by the study of psychiatric symptoms, which are more severe in the BPD patients with a history of early life stress. The function of the HPA axis assessed by this cortisol measure suggests differences between BPD and BP with ELS history. CONCLUSION The integrated analysis of psychopathology, ELS and neuroendocrine function may provide useful indicators to differentiate BPD and BD diagnoses. These preliminary data need to be replicated in a more significant sample with improved and multiple assessments of HPA axis activity.
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Affiliation(s)
| | - Anthony J Cleare
- King's College London, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience & South London and Maudsley NHS Foundation Trust, Denmark Hill, London SE5 8AZ, UK
| | - Allan H Young
- King's College London, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience & South London and Maudsley NHS Foundation Trust, Denmark Hill, London SE5 8AZ, UK
| | - Mario F Juruena
- Department of Neuroscience and Behavior, University of Sao Paulo, Brazil; King's College London, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience & South London and Maudsley NHS Foundation Trust, Denmark Hill, London SE5 8AZ, UK.
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15
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Coello K, Munkholm K, Nielsen F, Vinberg M, Kessing LV. Hair cortisol in newly diagnosed bipolar disorder and unaffected first-degree relatives. Psychoneuroendocrinology 2019; 99:183-190. [PMID: 30248494 DOI: 10.1016/j.psyneuen.2018.09.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 09/13/2018] [Accepted: 09/16/2018] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Hair cortisol is a promising new biomarker of retrospective systemic cortisol concentration. In this study, we compared hair cortisol concentrations in patients with newly diagnosed bipolar disorder (BD), their unaffected first-degree relatives and healthy individuals and identified potential predictors of hair cortisol concentrations in patients with BD. METHOD In a cross-sectional design, we compared hair cortisol concentrations in 181 patients with newly diagnosed/first episode BD, 42 of their unaffected first-degree relatives and 101 healthy age- and sex-matched individuals with no personal or first-degree family history of affective disorder. In patients with BD, we further investigated whether medication- and illness related variables, as well as measures of stressful life events in the preceding 12 months and childhood trauma, were associated with hair cortisol concentrations. RESULTS Hair cortisol concentrations were 35.1% (95%CI: 13.0-61.5) higher in patients with BD (P = 0.001) compared with healthy individuals in models adjusted for age and sex. Hair cortisol concentrations in unaffected first-degree relatives did not differ from healthy individuals (P = 0.8). In patients, neither medication, illness duration nor stress related variables were associated with hair cortisol concentrations. CONCLUSION We found elevated hair cortisol concentrations in patients newly diagnosed with BD indicating the presence of physiological stress in early stages of BD.
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Affiliation(s)
- Klara Coello
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Rigshospitalet, and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
| | - Klaus Munkholm
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Rigshospitalet, and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | | | - Maj Vinberg
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Rigshospitalet, and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Lars Vedel Kessing
- Copenhagen Affective Disorders Research Centre (CADIC), Psychiatric Center Copenhagen, Rigshospitalet, and Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
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16
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Homotypic and heterotypic continuity of internalizing and externalizing symptoms from ages 3 to 12: The moderating role of diurnal cortisol. Dev Psychopathol 2018; 31:789-798. [PMID: 30249313 DOI: 10.1017/s0954579418000573] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Psychological symptoms that arise in early childhood can follow a multitude of patterns into adolescence, including homotypic continuity (i.e., similar symptoms over time) and heterotypic continuity (i.e., a shift in symptoms over time). However, we know very little about the factors that distinguish homotypic vs. heterotypic continuity of early internalizing and externalizing symptoms over development. In a separate line of research, diurnal cortisol has been shown to predict later internalizing and externalizing problems. In the current study, we tested whether diurnal cortisol patterns moderated the course of internalizing and externalizing symptoms from preschool to early adolescence. 554 children (54% male) and parents participated in a longitudinal study. Parents reported on their children's internalizing and externalizing symptoms at ages 3 and 12, and children collected diurnal saliva samples at age 9. Results showed that a steeper cortisol decline at age 9 combined with high internalizing or externalizing problems at age 3 predicted higher internalizing problems at age 12. A more blunted cortisol decline combined with early internalizing or externalizing problems predicted higher externalizing problems in early adolescence. These results illustrate the moderating role of stress system functioning in homotypic and heterotypic patterns of psychopathology from preschool to early adolescence.
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17
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Salagre E, Dodd S, Aedo A, Rosa A, Amoretti S, Pinzon J, Reinares M, Berk M, Kapczinski FP, Vieta E, Grande I. Toward Precision Psychiatry in Bipolar Disorder: Staging 2.0. Front Psychiatry 2018; 9:641. [PMID: 30555363 PMCID: PMC6282906 DOI: 10.3389/fpsyt.2018.00641] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 11/13/2018] [Indexed: 12/23/2022] Open
Abstract
Personalized treatment is defined as choosing the "right treatment for the right person at the right time." Although psychiatry has not yet reached this level of precision, we are on the way thanks to recent technological developments that may aid to detect plausible molecular and genetic markers. At the moment there are some models that are contributing to precision psychiatry through the concept of staging. While staging was initially presented as a way to categorize patients according to clinical presentation, course, and illness severity, current staging models integrate multiple levels of information that can help to define each patient's characteristics, severity, and prognosis in a more precise and individualized way. Moreover, staging might serve as the foundation to create a clinical decision-making algorithm on the basis of the patient's stage. In this review we will summarize the evolution of the bipolar disorder staging model in relation to the new discoveries on the neurobiology of bipolar disorder. Furthermore, we will discuss how the latest and future progress in psychiatry might transform current staging models into precision staging models.
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Affiliation(s)
- Estela Salagre
- Barcelona Bipolar Disorders Program, Hospital Clinic, Institute of Neurosciences, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Spain
| | - Seetal Dodd
- IMPACT Strategic Research Centre, Barwon Health, Deakin University, Geelong, VIC, Australia.,Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia.,Orygen, The National Centre of Excellence in Youth Mental Health, Melbourne, VIC, Australia
| | - Alberto Aedo
- Barcelona Bipolar Disorders Program, Hospital Clinic, Institute of Neurosciences, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Spain.,Bipolar Disorders Unit, Department of Psychiatry, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Adriane Rosa
- Laboratory of Molecular Psychiatry, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.,Postgraduate Program: Psychiatry and Behavioral Science, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.,Department of Pharmacology and Postgraduate Program: Pharmacology and Therapeutics, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Silvia Amoretti
- Barcelona Clínic Schizophrenia Unit, Hospital Clinic de Barcelona, CIBERSAM, Barcelona, Spain
| | - Justo Pinzon
- Barcelona Bipolar Disorders Program, Hospital Clinic, Institute of Neurosciences, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Spain
| | - Maria Reinares
- Barcelona Bipolar Disorders Program, Hospital Clinic, Institute of Neurosciences, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Spain
| | - Michael Berk
- IMPACT Strategic Research Centre, Barwon Health, Deakin University, Geelong, VIC, Australia.,Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia.,Orygen, The National Centre of Excellence in Youth Mental Health, Melbourne, VIC, Australia.,Florey Institute for Neuroscience and Mental Health, Parkville, VIC, Australia
| | | | - Eduard Vieta
- Barcelona Bipolar Disorders Program, Hospital Clinic, Institute of Neurosciences, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Spain
| | - Iria Grande
- Barcelona Bipolar Disorders Program, Hospital Clinic, Institute of Neurosciences, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Spain
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18
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Schuler KL, Ruggero CJ, Goldstein BL, Perlman G, Klein DN, Kotov R. Diurnal Cortisol Interacts With Stressful Events to Prospectively Predict Depressive Symptoms in Adolescent Girls. J Adolesc Health 2017; 61:767-772. [PMID: 28935386 PMCID: PMC5701854 DOI: 10.1016/j.jadohealth.2017.06.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 06/26/2017] [Accepted: 06/27/2017] [Indexed: 11/27/2022]
Abstract
PURPOSE The aim of present study was to test the diathesis-stress model of depression using baseline cortisol, prospective assessment of depression symptoms, and stressful life events. METHODS The sample consisted of 527 adolescent girls aged 13.5-15.5 years without major depressive disorder. At baseline, saliva samples were collected at waking, 30 minutes after waking, and 8 p.m. on 3 consecutive days. Diurnal cortisol was indexed by cortisol awakening response (CAR) and area under the curve with respect to ground (AUCg). Stressful events during the preceding interval and current depressive symptoms were assessed 18 months following baseline. RESULTS Stressful events and the interaction of CAR or AUCg with stressful events predicted depressive symptoms at 18 months, even after controlling for baseline depressive symptoms. Specifically, in the face of high levels of stress, baseline blunted CAR or smaller AUCg were associated with future depressive symptoms. This was more apparent for CAR than AUCg. The effect was reversed at low levels of stress, with heightened CAR associated with more severe depressive symptoms. CONCLUSIONS Blunted CAR and less daily cortisol output at baseline appear to accentuate the depressogenic effects of stressful events after 18 months, consistent with the diathesis-stress model of hypothalamic-pituitary-adrenal axis function in depression.
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Affiliation(s)
- Keke L. Schuler
- Department of Psychology, University of North Texas, Denton, TX 76203, United States of America,Correspondence concerning this article should be addressed to Keke Schuler, Department of Psychology, University of North Texas, 1155 Union Circle #311280, Denton, TX 76203. Phone: +1-940-783-0244.
| | - Camilo J. Ruggero
- Department of Psychology, University of North Texas, Denton, TX 76203, United States of America
| | - Brandon L. Goldstein
- Department of Psychology, Stony Brook University, Stony Brook, NY 11794, United Sates of America
| | - Greg Perlman
- Department of Psychiatry, Stony Brook University, Stony Brook, NY 11794, United States of America
| | - Daniel N. Klein
- Department of Psychology, Stony Brook University, Stony Brook, NY 11794, United Sates of America
| | - Roman Kotov
- Department of Psychiatry, Stony Brook University, Stony Brook, NY 11794, United States of America
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19
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Cortisol awakening response in patients with bipolar disorder during acute episodes and partial remission: A pilot study. Psychiatry Res 2017; 258:594-597. [PMID: 28911851 DOI: 10.1016/j.psychres.2017.08.084] [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: 09/07/2016] [Revised: 06/28/2017] [Accepted: 08/28/2017] [Indexed: 11/21/2022]
Abstract
This exploratory study examined the cortisol awakening response (CAR) in patients with bipolar disorder (BPD) at acute phases and partial remission of manic or depressive episodes. Saliva samples of twenty-seven BPD inpatients and 25 healthy controls were collected to determine the CAR patterns, and 12 patients were sampled again at partial remission. BPD patients exhibited a non-enhanced CAR pattern. Lower cortisol expression and a blunted CAR distinguished bipolar-depressive patients from the controls. The intra-individual follow-up for both patient groups revealed a non-significant improvement in CAR patterns, indicating a trend of a normalized CAR after partial remission for BPD patients.
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20
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Sancassiani F, Lorrai S, Cossu G, Cocco A, Trincas G, Floris F, Mellino G, Machado S, Nardi AE, Fabrici EP, Preti A, Carta MG. The Effects of "VelaMente?!" Project on Social Functioning of People With Severe Psychosocial Disabilities. Clin Pract Epidemiol Ment Health 2017; 13:220-232. [PMID: 29299045 PMCID: PMC5725481 DOI: 10.2174/1745017901713010220] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 10/19/2017] [Accepted: 10/26/2017] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Physical activity helps to improve several clinical outcomes of people with severe psychosocial disabilities. The aims of this study were; 1) to assess the efficacy of a psychosocial rehabilitative intervention focused on sailing in a crew on: a) social functioning; b) severity of the psychosocial disability; c) general functioning; d) dysregulation of biorhythms of people with severe psychosocial disabilities, and 2) to evaluate the attenders' satisfaction about the project. METHODS A randomized waitlist controlled trial with parallel groups was carried out involving 51 people with severe psychosocial disabilities. The intervention was a 3 months-lasting course to learn sailing in a crew. Just after the randomization, a group began the sailing course and the other group (wait list) attended the sailing course after 3 months of treatments as usual. Before and after the sailing course, as well as the waiting list period, all attenders were assessed by HoNOS, GAF, CGI-S and BRIAN. At the end of the sailing course, they completed also a self-report satisfaction questionnaire. RESULTS Social functioning significantly improved after the sailing course (HoNOS total score "time X group": p=0.011), mainly because of the improvement of psychopathological symptoms (HoNOS symptoms score "time X group": p=0.003). Furthermore, participants greatly appreciated the rehabilitative program based on sailing in a crew. CONCLUSIONS When compared to more traditional rehabilitative activities that are usually carried out in mental health services, a psychosocial rehabilitative intervention based on sailing in a crew significantly improve the social functioning of people with severe psychosocial disabilities.
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Affiliation(s)
- Federica Sancassiani
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Stefano Lorrai
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Giulia Cossu
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Alessio Cocco
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Giuseppina Trincas
- Center of Liaison Psychiatry and Psychosomatic, University Hospital, , Italy
| | - Francesca Floris
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Gisa Mellino
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Sergio Machado
- Laboratory of Panic and Respiration, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), , Brazil
- Physical Activity Neuroscience, Physical Activity Sciences Postgraduate Program - Salgado de Oliveira University, , Brazil
| | - Antonio Egidio Nardi
- Laboratory of Panic and Respiration, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), , Brazil
| | - Elisabetta Pascolo Fabrici
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
- Center of Liaison Psychiatry and Psychosomatic, University Hospital, , Italy
- Laboratory of Panic and Respiration, Institute of Psychiatry of Federal University of Rio de Janeiro (IPUB/UFRJ), , Brazil
- Physical Activity Neuroscience, Physical Activity Sciences Postgraduate Program - Salgado de Oliveira University, , Brazil
| | - Antonio Preti
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
- Center of Liaison Psychiatry and Psychosomatic, University Hospital, , Italy
| | - Mauro Giovanni Carta
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
- Center of Liaison Psychiatry and Psychosomatic, University Hospital, , Italy
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Li J, Yoshikawa A, Meltzer HY. Replication of rs300774, a genetic biomarker near ACP1, associated with suicide attempts in patients with schizophrenia: Relation to brain cholesterol biosynthesis. J Psychiatr Res 2017; 94:54-61. [PMID: 28668716 DOI: 10.1016/j.jpsychires.2017.06.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 06/14/2017] [Accepted: 06/14/2017] [Indexed: 01/12/2023]
Abstract
The aim of this study was to determine if three biomarkers for suicide attempts previously identified and replicated in a genome-wide association (GWAS) study of bipolar disorder (BD) suicide attempters also predicted suicide attempts in patients prospectively diagnosed with schizophrenia (SCZ) or schizoaffective disorder (SAD). 162 genetically-verified Caucasian patients with SCZ or SAD were phenotyped for presence (45.7%) or absence of a lifetime suicide attempt. Three single nucleotide polymorphisms (SNPs) were genotyped or partially imputed from a GWAS dataset. After controlling for genetic architecture and gender, we replicated rs300774 (p = 0.012), near ACP1 (acid phosphatase 1), the top predictor of suicide attempts in the BD study. The result of Willour et al. (2012) was replicated in males (p = 0.046) but not in females (p = 0.205). The other two SNPs, rs7296262, and rs10437629, were not associated with suicide attempts in this study. rs300774 could be a cis-eQTL for ACP1, with minor allele carriers having lower expression levels (p = 0.002). This SNP also functioned as a trans-eQTL for genes related to cholesterol biosynthesis and the wnt-β-catenin pathway (p ≤ 0.0001). Further, co-expression analysis of candidate genes in brain suggested ACP1 is important to the regulation of a number of brain mechanisms linked to suicide, including cholesterol synthesis, β-catenin-mediated signaling pathway, serotonin, GABA, and the stress response via ARHGAP35 (p190rhogap), a repressor of glucocorticoid receptor (NR3C1) transcription. This study provides an additional validation of rs300774 as a potential transdiagnostic biomarker for suicide attempts and evidence that ACP1 may have an important role in regulation of the multiple systems associated with suicide.
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Affiliation(s)
- Jiang Li
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, United States
| | - Akane Yoshikawa
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, United States
| | - Herbert Y Meltzer
- Department of Psychiatry and Behavioral Sciences, Northwestern University Feinberg School of Medicine, United States.
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22
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On the transdiagnostic nature of peripheral biomarkers in major psychiatric disorders: A systematic review. Neurosci Biobehav Rev 2017; 83:97-108. [PMID: 28986182 DOI: 10.1016/j.neubiorev.2017.10.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 08/31/2017] [Accepted: 10/01/2017] [Indexed: 12/20/2022]
Abstract
The search for biomarkers has been a leading endeavor in biological psychiatry. To analyze its evolution over the years, we performed a systematic review to evaluate (a) the most studied peripheral molecular markers in major psychiatric disorders, (b) the main features of studies proposing them as biomarkers and (c) whether their patterns of variation are similar across disorders. Of the six molecules most commonly studied as plasmatic markers of schizophrenia, major depressive disorder or bipolar disorder, five (BDNF, TNF-alpha, IL-6, C-reactive protein and cortisol) were the same across diagnoses. An analysis of this literature showed that, while 66% of studies compared patients and controls, only 34% were longitudinal, and only 10% presented a measure of diagnostic or prognostic efficacy. Meta-analyses showed variation in the levels of these molecules to be robust across studies, but similar among disorders, suggesting them to reflect transdiagnostic systemic consequences of psychiatric illness. Based on this, we discuss how current publication practices have led to research fragmentation across diagnoses, and suggest approaches to face this issue.
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Parenting practices in middle childhood mediate the relation between growing up with a parent having bipolar disorder and offspring psychopathology from childhood into early adulthood. Dev Psychopathol 2017; 30:635-649. [DOI: 10.1017/s095457941700116x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
AbstractThe offspring of parents with bipolar disorder (OBD) are at high risk for developing mental disorders. In addition to genetic factors, environmental risk is purported to be associated with these negative outcomes. However, few studies have examined this relation. Using concurrent and longitudinal data, we examined if support, structure, and control provided by parents in middle childhood mediated the relation between having a parent with or without bipolar disorder, and offspring mental health. The sample included 145 offspring (77 OBD, 68 controls) aged 4 to 14 years and their parents. Parent and teacher ratings of child behavior were collected, and diagnostic assessments were conducted in offspring 12 years later (n = 101). Bootstrapping analyses showed that low levels of structure mediated the relation between having a parent with bipolar disorder and elevated internalizing and externalizing difficulties during middle childhood. For the longitudinal outcomes, parental control emerged as the strongest mediator of the relation between parents’ bipolar disorder and offspring psychopathology. Suboptimal childrearing may have different immediate and enduring consequences on mental health outcomes in the OBD. Parental structure has robust effects on emotional and behavioral problems in middle childhood, while levels of control promote psychological adjustment in the OBD as they mature.
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24
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Giurgiuca A, Nemes B, Schipor S, Caragheorgheopol A, Boscaiu V, Cozman D, Tudose C. CORTISOL LEVELS AND SUICIDE IN BIPOLAR I DISORDER. ACTA ENDOCRINOLOGICA (BUCHAREST, ROMANIA : 2005) 2017; 13:188-194. [PMID: 31149172 PMCID: PMC6516452 DOI: 10.4183/aeb.2017.188] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
CONTEXT Hypothalamic-pituitary-adrenal (HPA) axis irregularities have been described both in bipolar disorder and suicidal behaviour, but few studies have examined the relationship between suicidal behaviours and cortisol levels in bipolar disorder. OBJECTIVE We compared HPA axis activity in bipolar I (BPD I) individuals with and without suicidal ideation and behaviour through multiple measurement of serum and salivary cortisol. DESIGN Cross-sectional, observational study. SUBJECTS AND METHODS 75 BPD I patients were assigned into 3 groups (no history of suicidal behaviour, history of suicidal ideation, history of suicide attempt), according to the C-SSRS. Socio-demographical and clinical data was obtained by using MINI 6.0 and a semi-structured questionnaire. Salivary samples were collected using Sarstedt Cortisol Salivette synthetic swab system for two consecutive days at 08:00, 16:00, 23:00 and salivary cortisol concentrations were determined by ELISA technique. A unique 1mg dose of dexamethasone was administered on the first day, at 23:00, after the collection of the saliva sample. Blood was collected on the first day at 8:00 AM and basal morning serum cortisol levels were determined by immunoassay with fluorescence detection. RESULTS Cortisol parameters in our BPD I sample did not vary significantly in respect to suicidal history. However, patients with a history of suicidal ideation have significantly higher total cortisol outputs than patients with no history of suicidal behaviour in the 18 to 40 age category compared with the above 40 age category. CONCLUSIONS Total cortisol daily output varies significantly in an age-dependent manner in respect to suicidal thoughts in BPD I individuals.
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Affiliation(s)
- A. Giurgiuca
- “Carol Davila” University of Medicine and Pharmacy - Department of Psychiatry, Bucharest, Romania
| | - B. Nemes
- “Iuliu Hatieganu” University of Medicine and Pharmacy Cluj-Napoca - Department of Medical Psychology, Cluj-Napoca, Romania
| | - S. Schipor
- “C. I. Parhon” National Institute of Endocrinology, Bucharest, Romania
| | | | - V. Boscaiu
- “Gheorghe Mihoc - Caius Iacob” Institute of Statistics and Applied Mathematics, Bucharest, Romania
| | - D. Cozman
- “Iuliu Hatieganu” University of Medicine and Pharmacy Cluj-Napoca - Department of Medical Psychology, Cluj-Napoca, Romania
| | - C. Tudose
- “Carol Davila” University of Medicine and Pharmacy - Department of Psychiatry, Bucharest, Romania
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25
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Fries GR, Quevedo J, Zeni CP, Kazimi IF, Zunta-Soares G, Spiker DE, Bowden CL, Walss-Bass C, Soares JC. Integrated transcriptome and methylome analysis in youth at high risk for bipolar disorder: a preliminary analysis. Transl Psychiatry 2017; 7:e1059. [PMID: 28291257 PMCID: PMC5416675 DOI: 10.1038/tp.2017.32] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 12/20/2017] [Accepted: 01/18/2017] [Indexed: 12/19/2022] Open
Abstract
First-degree relatives of patients with bipolar disorder (BD), particularly their offspring, have a higher risk of developing BD and other mental illnesses than the general population. However, the biological mechanisms underlying this increased risk are still unknown, particularly because most of the studies so far have been conducted in chronically ill adults and not in unaffected youth at high risk. In this preliminary study we analyzed genome-wide expression and methylation levels in peripheral blood mononuclear cells from children and adolescents from three matched groups: BD patients, unaffected offspring of bipolar parents (high risk) and controls (low risk). By integrating gene expression and DNA methylation and comparing the lists of differentially expressed genes and differentially methylated probes between groups, we were able to identify 43 risk genes that discriminate patients and high-risk youth from controls. Pathway analysis showed an enrichment of the glucocorticoid receptor (GR) pathway with the genes MED1, HSPA1L, GTF2A1 and TAF15, which might underlie the previously reported role of stress response in the risk for BD in vulnerable populations. Cell-based assays indicate a GR hyporesponsiveness in cells from adult BD patients compared to controls and suggest that these GR-related genes can be modulated by DNA methylation, which poses the theoretical possibility of manipulating their expression as a means to counteract the familial risk presented by those subjects. Although preliminary, our results suggest the utility of peripheral measures in the identification of biomarkers of risk in high-risk populations and further emphasize the potential role of stress and DNA methylation in the risk for BD in youth.
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Affiliation(s)
- G R Fries
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - J Quevedo
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA,Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA,Neuroscience Graduate Program, The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, TX, USA,Laboratory of Neurosciences, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil
| | - C P Zeni
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - I F Kazimi
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - G Zunta-Soares
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - D E Spiker
- Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - C L Bowden
- Department of Psychiatry, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - C 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,Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA,Neuroscience Graduate Program, The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, TX, USA,Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), 1941 East Road, BBSB 5102A, Houston, TX 77054, USA. E-mail:
| | - J C Soares
- Translational Psychiatry Program, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA,Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
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Goodday SM, Horrocks J, Keown-Stoneman C, Grof P, Duffy A. Repeated salivary daytime cortisol and onset of mood episodes in offspring of bipolar parents. Int J Bipolar Disord 2016; 4:12. [PMID: 27230036 PMCID: PMC4882311 DOI: 10.1186/s40345-016-0053-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 05/12/2016] [Indexed: 12/04/2022] Open
Abstract
Background Differences in cortisol secretion may differentiate individuals at high compared to low genetic risk for bipolar disorder (BD) and predict the onset or recurrence of mood episodes. The objectives of this study were to determine if salivary cortisol measures are: (1) different in high-risk offspring of parents with BD (HR) compared to control offspring of unaffected parents (C), (2) stable over time, (3) associated with the development of mood episode onset/recurrence, and (4) influenced by comorbid complications. Methods Fifty-three HR and 22 C completed salivary cortisol sampling annually for up to 4 years in conjunction with semi-structured clinical interviews. The cortisol awakening response (CAR), daytime cortisol [area under the curve (AUC)], and evening cortisol (8:00 p.m.) were calculated. Results There were no differences in baseline CAR, AUC and evening cortisol between HR and C (p = 0.38, p = 0.30 and p = 0.84), respectively. CAR, AUC and evening cortisol were stable over yearly assessments in HR, while in Cs, evening cortisol increased over time (p = 0.008), and CAR and AUC remained stable. In HR, AUC and evening cortisol increased the hazard of a new onset mood disorder/recurrence by 2.7 times (p = 0.01), and 3.5 times (p = 0.01), respectively, but this was no longer significant after accounting for multiple comparisons. Conclusions Salivary cortisol is stable over time within HR offspring. However, between individuals, basal salivary cortisol is highly variable. More research is needed, with larger samples of prospectively studied HR youth using a more reliable method of cortisol measurement, to determine the potential role of cortisol in the development of mood disorders. Electronic supplementary material The online version of this article (doi:10.1186/s40345-016-0053-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sarah M Goodday
- Department of Epidemiology, Dalla Lana School of Public Health, University of Toronto, 155 College St, Toronto, ON, M5T 3M7, Canada.
| | - Julie Horrocks
- Department of Mathematics & Statistics, University of Guelph, Guelph, ON, Canada
| | | | - Paul Grof
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Mood Disorders Centre of Ottawa, Ottawa University Health Services, Ottawa, ON, Canada
| | - Anne Duffy
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Mood Disorders Centre of Ottawa, Ottawa University Health Services, Ottawa, ON, Canada.,Department of Psychiatry, University of Calgary, Calgary, AB, Canada
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Melhem NM, Keilp JG, Porta G, Oquendo MA, Burke A, Stanley B, Cooper TB, Mann JJ, Brent DA. Blunted HPA Axis Activity in Suicide Attempters Compared to those at High Risk for Suicidal Behavior. Neuropsychopharmacology 2016; 41:1447-56. [PMID: 26450815 PMCID: PMC4832012 DOI: 10.1038/npp.2015.309] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 08/26/2015] [Accepted: 09/20/2015] [Indexed: 12/21/2022]
Abstract
Studies looking at the relationship of the hypothalamic-pituitary-adrenal (HPA) axis to suicidal behavior and its risk factors, such as depression, childhood abuse, and impulsive aggression, report inconsistent results. These studies also do not always differentiate between subjects who go on to attempt suicide, suicidal subjects who never attempted suicide, and non-suicidal subjects with psychiatric disorders. In this study, we examined cortisol responses to an experimental stressor, the Trier Social Stress Test (TSST), in 208 offspring of parents with mood disorder. Offspring suicide attempters showed lower total cortisol output (β=-0.47, 95% CI (-0.83, -0.11), p=0.01) compared with offspring with suicide-related behavior (SRB) but never attempted, non-suicidal offspring, and a healthy control group. The result remained significant even after controlling for sex, age, race, ethnicity, site, socio-economic status, and hour of the day when the TSST was conducted. Suicide attempters also showed lower baseline cortisol before the TSST (β=-0.45, 95% CI (-0.74, -0.17), p=0.002). However, there were no significant differences between the groups on cortisol reactivity to stress (β=4.5, 95% CI (-12.9, 22), p=0.61). Although subjects with suicide attempt and SRB have similar clinical and psychosocial characteristics, this is the first study to differentiate them biologically on HPA axis indices. Blunted HPA axis activity may increase risk for suicide attempt among individuals with psychopathology by reducing their ability to respond adaptively to ongoing stressors. These results may help better identify subjects at high risk for suicidal behavior for targeted prevention and intervention efforts.
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Affiliation(s)
- Nadine M Melhem
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA,Department of Psychiatry, University of Pittsburgh School of Medicine, 3811 O'Hara Street, BFT 318, Pittsburgh, PA 15213, USA, Tel: +412 246 6166, Fax: +412 246 5344, E-mail:
| | - John G Keilp
- Department of Psychiatry, Columbia University, New York State Psychiatric Institute, New York, NY, USA
| | - Giovanna Porta
- University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Maria A Oquendo
- Department of Psychiatry, Columbia University, New York State Psychiatric Institute, New York, NY, USA
| | - Ainsley Burke
- Department of Psychiatry, Columbia University, New York State Psychiatric Institute, New York, NY, USA
| | - Barbara Stanley
- Department of Psychiatry, Columbia University, New York State Psychiatric Institute, New York, NY, USA
| | - Thomas B Cooper
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, USA
| | - J John Mann
- Department of Psychiatry, Columbia University, New York State Psychiatric Institute, New York, NY, USA
| | - David A Brent
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Sackeim HA. Acute Continuation and Maintenance Treatment of Major Depressive Episodes With Transcranial Magnetic Stimulation. Brain Stimul 2016; 9:313-319. [PMID: 27052475 DOI: 10.1016/j.brs.2016.03.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 03/06/2016] [Accepted: 03/07/2016] [Indexed: 12/28/2022] Open
Affiliation(s)
- Harold A Sackeim
- Departments of Psychiatry and Radiology, College of Physicians and Surgeons, Columbia University, 2124 Moselem Springs Road, Fleetwood, PA 19522, USA.
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29
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Belvederi Murri M, Prestia D, Mondelli V, Pariante C, Patti S, Olivieri B, Arzani C, Masotti M, Respino M, Antonioli M, Vassallo L, Serafini G, Perna G, Pompili M, Amore M. The HPA axis in bipolar disorder: Systematic review and meta-analysis. Psychoneuroendocrinology 2016; 63:327-42. [PMID: 26547798 DOI: 10.1016/j.psyneuen.2015.10.014] [Citation(s) in RCA: 219] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 10/09/2015] [Accepted: 10/19/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To provide a quantitative and qualitative synthesis of the available evidence on the role of Hypothalamic-Pituitary-Adrenal (HPA) axis in the pathophysiology of Bipolar Disorder (BD). METHODS Meta-analysis and meta-regression of case-control studies examining the levels of cortisol, ACTH, CRH levels. Systematic review of stress reactivity, genetic, molecular and neuroimaging studies related to HPA axis activity in BD. RESULTS Forty-one studies were included in the meta-analyses. BD was associated with significantly increased levels of cortisol (basal and post-dexamethasone) and ACTH, but not of CRH. In the meta-regression, case-control differences in cortisol levels were positively associated with the manic phase (p=0.005) and participants' age (p=0.08), and negatively with antipsychotics use (p=0.001). Reviewed studies suggest that BD is associated with abnormalities of stress-related molecular pathways in several brain areas. Variants of HPA axis-related genes seem not associated with a direct risk of developing BD, but with different clinical presentations. Also, studies on unaffected relatives suggest that HPA axis dysregulation is not an endophenotype of BD, but seems related to environmental risk factors, such as childhood trauma. Progressive HPA axis dysfunction is a putative mechanism that might underlie the clinical and cognitive deterioration of patients with BD. CONCLUSIONS BD is associated with dysfunction of HPA axis activity, with important pathophysiological implications. Targeting HPA axis dysfunctions might be a novel strategy to improve the outcomes of BD.
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Affiliation(s)
- Martino Belvederi Murri
- Section of Psychiatry, Department of Neuroscience, Ophthalmology, Genetics and Infant-Maternal Science, University of Genoa, Italy; Institute of Psychiatry, Psychology and Neuroscience, Department of Psychological Medicine, King's College London, London, UK.
| | - Davide Prestia
- Section of Psychiatry, Department of Neuroscience, Ophthalmology, Genetics and Infant-Maternal Science, University of Genoa, Italy
| | - Valeria Mondelli
- Institute of Psychiatry, Psychology and Neuroscience, Department of Psychological Medicine, King's College London, London, UK
| | - Carmine Pariante
- Institute of Psychiatry, Psychology and Neuroscience, Department of Psychological Medicine, King's College London, London, UK
| | - Sara Patti
- Section of Psychiatry, Department of Neuroscience, Ophthalmology, Genetics and Infant-Maternal Science, University of Genoa, Italy
| | - Benedetta Olivieri
- Section of Psychiatry, Department of Neuroscience, Ophthalmology, Genetics and Infant-Maternal Science, University of Genoa, Italy
| | - Costanza Arzani
- Section of Psychiatry, Department of Neuroscience, Ophthalmology, Genetics and Infant-Maternal Science, University of Genoa, Italy
| | - Mattia Masotti
- Section of Psychiatry, Department of Neuroscience, Ophthalmology, Genetics and Infant-Maternal Science, University of Genoa, Italy
| | - Matteo Respino
- Section of Psychiatry, Department of Neuroscience, Ophthalmology, Genetics and Infant-Maternal Science, University of Genoa, Italy
| | - Marco Antonioli
- Section of Psychiatry, Department of Neuroscience and Infant-Maternal Science, University of Sassari, Italy
| | - Linda Vassallo
- Section of Psychiatry, Department of Neuroscience, Ophthalmology, Genetics and Infant-Maternal Science, University of Genoa, Italy
| | - Gianluca Serafini
- Section of Psychiatry, Department of Neuroscience, Ophthalmology, Genetics and Infant-Maternal Science, University of Genoa, Italy
| | - Giampaolo Perna
- San Benedetto Hospital, Hermanas Hospitalarias, Department of Clinical Neuroscience, Albese con Cassano, Como, Italy
| | - Maurizio Pompili
- Suicide Prevention Center, Department of Neurosciences, Mental Health and Sensory Organs, Suicide Prevention Center, Sant'Andrea Hospital, Sapienza University of Rome, Italy
| | - Mario Amore
- Section of Psychiatry, Department of Neuroscience, Ophthalmology, Genetics and Infant-Maternal Science, University of Genoa, Italy
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LeMoult J, Ordaz SJ, Kircanski K, Singh MK, Gotlib IH. Predicting first onset of depression in young girls: Interaction of diurnal cortisol and negative life events. JOURNAL OF ABNORMAL PSYCHOLOGY 2015; 124:850-9. [PMID: 26595472 PMCID: PMC4662047 DOI: 10.1037/abn0000087] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Interactions between biological vulnerability and environmental adversity are central to the pathophysiology of depression. Given evidence that the hypothalamic-pituitary-adrenal (HPA) axis influences biological responses to environmental events, in the current longitudinal study the authors examined HPA-axis functioning, negative life events, and their interaction as predictors of the first onset of depression. At baseline, girls ages 9 to 14 years provided saliva samples to assess levels of diurnal cortisol production, quantified by total cortisol production (area under the curve with respect to ground; AUCg) and the cortisol awakening response (CAR). The authors then followed these participants until they reached age 18 in order to assess their subsequent experience of negative life events and the onset of a depressive episode. They found that the influence of negative life events on the subsequent onset of depression depended on HPA-axis functioning at baseline. Specifically, negative life events predicted the onset of depression in girls with higher levels of AUCg, but not in girls with lower levels of AUCg. In contrast, CAR did not predict the onset of depression either alone or in interaction with negative life events. These findings suggest that elevated total cortisol production in daily life potentiates susceptibility to environmental adversity and signals the need for early intervention.
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Affiliation(s)
| | - Sarah J. Ordaz
- Department of Psychology, Stanford University
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Stanford University
| | | | - Manpreet K. Singh
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Stanford University
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31
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Nederhof E, van Oort FVA, Bouma EMC, Laceulle OM, Oldehinkel AJ, Ormel J. Predicting mental disorders from hypothalamic-pituitary-adrenal axis functioning: a 3-year follow-up in the TRAILS study. Psychol Med 2015; 45:2403-2412. [PMID: 25786334 DOI: 10.1017/s0033291715000392] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Hypothalamic-pituitary-adrenal axis functioning, with cortisol as its major output hormone, has been presumed to play a key role in the development of psychopathology. Predicting affective disorders from diurnal cortisol levels has been inconclusive, whereas the predictive value of stress-induced cortisol concentrations has not been studied before. The aim of this study was to predict mental disorders over a 3-year follow-up from awakening and stress-induced cortisol concentrations. METHOD Data were used from 561 TRAILS (TRacking Adolescents' Individual Lives Survey) participants, a prospective cohort study of Dutch adolescents. Saliva samples were collected at awakening and half an hour later and during a social stress test at age 16. Mental disorders were assessed 3 years later with the Composite International Diagnostic Interview (CIDI). RESULTS A lower cortisol awakening response (CAR) marginally significantly predicted new disorders [odds ratio (OR) 0.77, p = 0.06]. A flat recovery slope predicted disorders with a first onset after the experimental session (OR 1.27, p = 0.04). Recovery revealed smaller, non-significant ORs when predicting new onset affective or anxiety disorders, major depressive disorder, or dependence disorders in three separate models, corrected for all other new onsets. CONCLUSIONS Our results suggest that delayed recovery and possibly reduced CAR are indicators of a more general risk status and may be part of a common pathway to psychopathology. Delayed recovery suggests that individuals at risk for mental disorders perceived the social stress test as less controllable and less predictable.
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Affiliation(s)
- E Nederhof
- University of Groningen, University Medical Center Groningen, University Center for Psychiatry, Interdisciplinary Center Psychopathology and Emotion regulation,Groningen,The Netherlands
| | - F V A van Oort
- Department of Child and Adolescent Psychiatry,Erasmus University Medical Center,Rotterdam,The Netherlands
| | - E M C Bouma
- University of Groningen, University Medical Center Groningen, University Center for Psychiatry, Interdisciplinary Center Psychopathology and Emotion regulation,Groningen,The Netherlands
| | - O M Laceulle
- University of Groningen, University Medical Center Groningen, University Center for Psychiatry, Interdisciplinary Center Psychopathology and Emotion regulation,Groningen,The Netherlands
| | - A J Oldehinkel
- University of Groningen, University Medical Center Groningen, University Center for Psychiatry, Interdisciplinary Center Psychopathology and Emotion regulation,Groningen,The Netherlands
| | - J Ormel
- University of Groningen, University Medical Center Groningen, University Center for Psychiatry, Interdisciplinary Center Psychopathology and Emotion regulation,Groningen,The Netherlands
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The Avon Longitudinal Study of Parents and Children (ALSPAC) birth cohort as a resource for studying psychopathology in childhood and adolescence: a summary of findings for depression and psychosis. Soc Psychiatry Psychiatr Epidemiol 2015; 50:1017-27. [PMID: 26002411 DOI: 10.1007/s00127-015-1072-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 05/13/2015] [Indexed: 12/16/2022]
Abstract
PURPOSE The purpose of this study is to highlight the Avon Longitudinal Study of Parents and Children (ALSPAC) as a resource to study psychopathology. To demonstrate this, we review the studies related to depression and psychosis in childhood and adolescence and discuss the results in relation to the aetiology of depression and psychotic experiences (PEs) and possible underlying mechanisms. METHODS We examined the list of publications from ALSPAC and then classified them as examining (a) the course and risk factors of maternal and paternal depression, (b) the effects of maternal and paternal depression on child development, (c) risk factors for depression in childhood and adolescence, (d) the frequency, clinical relevance and risk factors of PEs, and (e) shared risk factors for depression and PEs. RESULTS There was evidence that environmental stressors and the way these are interpreted contribute to risk of depression and evidence that biological factors related to puberty are also likely to play a role. With regards to PEs, the findings further support the existence of 'a continuum of psychosis' while they also suggest that PEs might be of limited clinical utility in predicting psychotic disorder during adolescence and early adulthood. Finally, most risk factors examined were found to be shared between depression and PEs. CONCLUSIONS The ALSPAC birth cohort has provided important insights for our understanding of the aetiological mechanisms underlying depression and PEs. Future research could aim to incorporate measures of automatic psychological mechanisms to provide insights into the brain mechanisms that underlie these clinical phenomena.
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LeMoult J, Chen MC, Foland-Ross LC, Burley HW, Gotlib IH. Concordance of mother-daughter diurnal cortisol production: Understanding the intergenerational transmission of risk for depression. Biol Psychol 2015; 108:98-104. [PMID: 25862380 PMCID: PMC4426075 DOI: 10.1016/j.biopsycho.2015.03.019] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 02/14/2015] [Accepted: 03/31/2015] [Indexed: 11/24/2022]
Abstract
A growing body of research is demonstrating concordance between mother and child diurnal cortisol production. In the context of maternal history of depression, intergenerational concordance of cortisol production could contribute to hypercortisolemia in children of depressed mothers, which has been shown to increase risk for MDD. The current study is the first to examine concordance in diurnal cortisol production between mothers with a history of depression and their never-depressed, but high-risk, children. We collected salivary cortisol across 2 days from mothers with (remitted; RMD) and without (CTL) a history of recurrent episodes of depression and their never-depressed daughters. As expected, RMD mothers and their daughters both exhibited higher cortisol production than did their CTL counterparts. Moreover, both across and within groups, mothers' and daughters' cortisol production were directly coupled. These findings suggest that there is an intergenerational concordance in cortisol dysregulation that may contribute to hypercortisolemia in girls at familial risk for depression.
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Hubers AAM, van der Mast RC, Pereira AM, Roos RAC, Veen LJ, Cobbaert CM, van Duijn E, Giltay EJ. Hypothalamic-pituitary-adrenal axis functioning in Huntington's disease and its association with depressive symptoms and suicidality. J Neuroendocrinol 2015; 27:234-44. [PMID: 25565388 DOI: 10.1111/jne.12255] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 12/10/2014] [Accepted: 01/04/2015] [Indexed: 12/27/2022]
Abstract
Hyperactivity of the hypothalamic-pituitary-adrenal (HPA) axis has been reported in Huntington's disease (HD). In non-HD populations, alterations in HPA axis activity have been associated with depression and suicidality. The present study aims to compare HPA axis activity between HD mutation carriers and controls, and examine its association with depressive symptoms and suicidality. To this end, salivary cortisol concentrations at seven time points, as well as depressive symptoms and suicidality, were assessed in 49 pre-motor, 102 motor symptomatic mutation carriers and 55 controls, at baseline and follow-up combined. Differences in parameters of HPA axis activity between these three groups, and their associations with depressive symptoms and suicidality in HD mutation carriers, were analysed using multilevel regression analyses. There were no differences in parameters of HPA axis activity between mutation carriers and controls, whereas pre-motor symptomatic mutation carriers had a significantly higher area under the curve to the increase (AUCi ) compared to motor symptomatic mutation carriers. In the entire HD cohort, HPA axis activity was not associated with depressive symptoms or suicidality. After stratifying mutation carriers into pre-motor, early and advanced disease stages, β values differed between these groups. Remarkably, a higher AUCi was significantly associated with depressive symptoms in pre-motor and early disease stage mutation carriers, with a reverse nonsignificant association in advanced disease stage mutation carriers. The lower AUCi in motor symptomatic mutation carriers and the varying associations with depressive symptoms and suicidality in pre-motor, early and advanced disease stages could possibly be explained by exhaustion of the HPA axis after prolonged stress-induced HPA axis hyperactivity and deserves further longitudinal study.
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Affiliation(s)
- A A M Hubers
- Department of Psychiatry, Leiden University Medical Center, Leiden, The Netherlands
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Barry TJ, Murray L, Fearon RP, Moutsiana C, Cooper P, Goodyer IM, Herbert J, Halligan SL. Maternal postnatal depression predicts altered offspring biological stress reactivity in adulthood. Psychoneuroendocrinology 2015; 52:251-60. [PMID: 25544737 PMCID: PMC4309884 DOI: 10.1016/j.psyneuen.2014.12.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 12/01/2014] [Accepted: 12/01/2014] [Indexed: 11/30/2022]
Abstract
The offspring of depressed parents have been found to show elevated basal levels of the stress hormone cortisol. Whether heightened cortisol stress reactivity is also present in this group has yet to be clearly demonstrated. We tested whether postnatal maternal depression predicts subsequent increases in offspring biological sensitivity to social stress, as indexed by elevated cortisol reactivity. Participants (mean age 22.4-years) derived from a 22-year prospective longitudinal study of the offspring of mothers who had postnatal depression (PND group; n=38) and a control group (n=38). Salivary cortisol response to a social-evaluative threat (Trier Social Stress Test) was measured. Hierarchical linear modelling indicated that PND group offspring showed greater cortisol reactivity to the stress test than control group participants. Group differences were not explained by offspring depressive or anxiety symptoms, experiences of negative life events, elevated basal cortisol at age 13-years, subsequent exposure to maternal depression, or other key covariates. The findings indicate that the presence of early maternal depression can predict offspring biological sensitivity to social stress in adulthood, with potential implications for broader functioning.
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Affiliation(s)
- Tom J. Barry
- Centre for the Psychology of Learning and Experimental Psychopathology, University of Leuven, Tiensestraat 102, Leuven 3000, Belgium
| | - Lynne Murray
- School of Psychology and CLS, University of Reading, Reading RG6 6AL, UK,Department of Psychology, Stellenbosch University, Stellenbosch, South Africa
| | - R.M. Pasco Fearon
- Research Department of Clinical, Educational and Health Psychology, University College London, 1-19 Torrington Place, London WC1E 7HB, UK
| | - Christina Moutsiana
- Experimental Psychology, University College London, Gower Street, London WC1E 6BT, UK
| | - Peter Cooper
- School of Psychology and CLS, University of Reading, Reading RG6 6AL, UK,Department of Psychology, Stellenbosch University, Stellenbosch, South Africa
| | - Ian M. Goodyer
- Department of Psychiatry, Cambridge University, Cambridge CB2 2AH, UK
| | - Joe Herbert
- John van Geest Centre for Brain Repair, Department of Clinical Neuroscience, Cambridge University, Cambridge CB2 3BY, UK
| | - Sarah L. Halligan
- Department of Psychology, University of Bath, Bath BA2 7AY, UK,Corresponding author. Tel.: +44 1225 386636.
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Duffy A. Toward a comprehensive clinical staging model for bipolar disorder: integrating the evidence. CANADIAN JOURNAL OF PSYCHIATRY. REVUE CANADIENNE DE PSYCHIATRIE 2014; 59:659-66. [PMID: 25702367 PMCID: PMC4304586 DOI: 10.1177/070674371405901208] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVES To describe key findings relating to the natural history and heterogeneity of bipolar disorder (BD) relevant to the development of a unitary clinical staging model. Currently proposed staging models are briefly discussed, highlighting complementary findings, and a comprehensive staging model of BD is proposed integrating the relevant evidence. METHOD A selective review of key published findings addressing the natural history, heterogeneity, and clinical staging models of BD are discussed. RESULTS The concept of BD has broadened, resulting in an increased spectrum of disorders subsumed under this diagnostic category. Different staging models for BD have been proposed based on the early psychosis literature, studies of patients with established BD, and prospective studies of the offspring of parents with BD. The overarching finding is that there are identifiable sequential clinical phases in the development of BD that differ in important ways between classical episodic and psychotic spectrum subtypes. In addition, in the context of familial risk, early risk syndromes add important predictive value and inform the staging model for BD. CONCLUSIONS A comprehensive clinical staging model of BD can be derived from the available evidence and should consider the natural history of BD and the heterogeneity of subtypes. This model will advance both early intervention efforts and neurobiological research.
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Affiliation(s)
- Anne Duffy
- Campus Alberta Innovates Program Professor in Youth Mental Health, Medical Director Mood Disorders Program, Department of Psychiatry, University of Calgary, Calgary, Alberta
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37
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Jacobson L. Hypothalamic-pituitary-adrenocortical axis: neuropsychiatric aspects. Compr Physiol 2014; 4:715-38. [PMID: 24715565 DOI: 10.1002/cphy.c130036] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Evidence of aberrant hypothalamic-pituitary-adrenocortical (HPA) activity in many psychiatric disorders, although not universal, has sparked long-standing interest in HPA hormones as biomarkers of disease or treatment response. HPA activity may be chronically elevated in melancholic depression, panic disorder, obsessive-compulsive disorder, and schizophrenia. The HPA axis may be more reactive to stress in social anxiety disorder and autism spectrum disorders. In contrast, HPA activity is more likely to be low in PTSD and atypical depression. Antidepressants are widely considered to inhibit HPA activity, although inhibition is not unanimously reported in the literature. There is evidence, also uneven, that the mood stabilizers lithium and carbamazepine have the potential to augment HPA measures, while benzodiazepines, atypical antipsychotics, and to some extent, typical antipsychotics have the potential to inhibit HPA activity. Currently, the most reliable use of HPA measures in most disorders is to predict the likelihood of relapse, although changes in HPA activity have also been proposed to play a role in the clinical benefits of psychiatric treatments. Greater attention to patient heterogeneity and more consistent approaches to assessing treatment effects on HPA function may solidify the value of HPA measures in predicting treatment response or developing novel strategies to manage psychiatric disease.
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Moro MF, Carta MG, Pintus M, Pintus E, Melis R, Kapczinski F, Vieta E, Colom F. Validation of the Italian Version of the Biological Rhythms Interview of Assessment in Neuropsychiatry (BRIAN): Some Considerations on its Screening Usefulness. Clin Pract Epidemiol Ment Health 2014; 10:48-52. [PMID: 24987447 PMCID: PMC4076616 DOI: 10.2174/1745017901410010048] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 05/05/2014] [Accepted: 05/09/2014] [Indexed: 11/30/2022]
Abstract
Introduction: Abnormalities in biological rhythms (BR) may have a role in the pathophysiology of Bipolar Disorders (BD). The objective of this study is to validate the Italian version of the Biological Rhythms Interview of Assessment in Neuropsychiatry (BRIAN), a useful tool in studying BR, and measure its accuracy in discriminating BD.
Methods: 44 outpatients with DSM-IV-TR diagnosis of BD and 38 controls balanced for sex and age were consecutively recruited. The discriminant validity of BRIAN for the screening of BD and its test re-test reliability in two evaluations were assessed. Results: BD patients scored 22.22±11.19 in BRIAN against 7.13±5.6 of the control group (P<0.0001). BRIAN showed a good accuracy to screen between BD non-BD at cutoff 16, a sensitivity was 68.2 and specificity was 92.5. The test-retest stability measured using Pearson’s coefficient found very high r values for each section and the total score, thus indicating a correlation at the two times of statistical significance in all measures. Cohen’s Kappa varied from 0.47 in the sociality section to 0.80 in the sleep section, with a total K mean of 0.65. Conclusion: The results show that the Italian version of BRIAN has good discriminant validity in detecting BD from healthy controls and shows good test-retest reliability. The study suggests the possibility of developing mixed screening tools by introducing items on dysregulation of biological rhythms to the usual measures of mood.
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Affiliation(s)
- Maria F Moro
- Department of Public Health and Clinical and Molecular Medicine, University of Cagliari, Italy
| | - Mauro G Carta
- Department of Public Health and Clinical and Molecular Medicine, University of Cagliari, Italy
| | - Mirra Pintus
- Department of Public Health and Clinical and Molecular Medicine, University of Cagliari, Italy
| | - Elisa Pintus
- Department of Public Health and Clinical and Molecular Medicine, University of Cagliari, Italy
| | - Riccardo Melis
- Department of Public Health and Clinical and Molecular Medicine, University of Cagliari, Italy
| | - Flavio Kapczinski
- Bipolar Disorders Program and Laboratory of Molecular Psychiatry, Hospital de Clinicas de Porto Alegre, Ramiro Barcelos 2350, 90035-000, Porto Alegre, RS, Brazil
| | - Eduard Vieta
- Bipolar Disorders Program, Institute of Neurosciences, Hospital Clinic Barcelona, IDIBAPS, CIBERSAM, University of Barcelona, Barcelona, Catalonia, Spain
| | - Francesc Colom
- Bipolar Disorders Program, Institute of Neurosciences, Hospital Clinic Barcelona, IDIBAPS, CIBERSAM, University of Barcelona, Barcelona, Catalonia, Spain
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Marceau K, Ruttle PL, Shirtcliff EA, Essex MJ, Susman EJ. Developmental and contextual considerations for adrenal and gonadal hormone functioning during adolescence: Implications for adolescent mental health. Dev Psychobiol 2014; 57:742-68. [PMID: 24729154 DOI: 10.1002/dev.21214] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 03/03/2014] [Indexed: 12/13/2022]
Abstract
Substantial research has implicated the hypothalamic-pituitary-adrenal (HPA) and hypothalamic-pituitary-gonadal (HPG) axes independently in adolescent mental health problems, though this literature remains largely inconclusive. Given the cross-talk between the HPA and HPG axes and their increased activation in adolescence, a dual-axis approach that examines both axes simultaneously is proposed to predict the emergence and persistence of adolescent mental health problems. After briefly orienting readers to HPA and HPG axis functioning, we review the literature examining associations between hormone levels and changes with behavior during adolescence. Then, we provide a review of the literature supporting examination of both axes simultaneously and present the limited research that has taken a dual-axis approach. We propose future directions including consideration of between-person and within-person approaches to address questions of correlated changes in HPA and HPG hormones. Potential moderators are considered to increase understanding of the nuanced hormone-behavior associations during key developmental transitions.
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Affiliation(s)
- Kristine Marceau
- The Pennsylvania State University, University Park, PA. .,Brown University, Center for Alcohol and Addiction Studies, Providence, RI. .,Department of Psychiatry, Rhode Island Hospital, Providence, RI.
| | - Paula L Ruttle
- Department of Psychiatry, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Elizabeth A Shirtcliff
- Iowa State University, Department of Human Development and Family Studies, New Orleans, LA
| | - Marilyn J Essex
- Department of Psychiatry, School of Medicine and Public Health, University of Wisconsin, Madison, WI
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Duffy A, Horrocks J, Doucette S, Keown-Stoneman C, Grof P, Andreazza A, Young LT. Immunological and neurotrophic markers of risk status and illness development in high-risk youth: understanding the neurobiological underpinnings of bipolar disorder. Int J Bipolar Disord 2014; 2:29. [PMID: 26092400 PMCID: PMC4447739 DOI: 10.1186/2194-7511-2-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 03/14/2014] [Indexed: 12/17/2022] Open
Abstract
Bipolar disorder is a highly heritable illness that onsets in adolescence and young adulthood. We examined gene expression (mRNA) and protein levels of candidate immune and neurotrophic markers in well-characterized offspring of bipolar parents in order to identify reliable indicators of illness risk status and the early clinical stages of illness development. We measured mRNA expression and protein levels in candidate immune (TNF-α, IL-1β, IL-10, IFN-δ) and neurotrophic (brain-derived neurotrophic factor (BDNF)) markers from plasma. High-risk offspring were identified from families in which one parent had confirmed bipolar disorder. Control offspring were identified from families in which neither parent met lifetime criteria for a major psychiatric disorder. All parental Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) diagnoses were based on Schedule for Affective Disorders - Lifetime Version (SADS-L) interviews and blind consensus review. As part of an ongoing study, all offspring were prospectively assessed using KSADS-PL format interviews and diagnoses confirmed on blind consensus review. High-risk offspring had significantly increased IL-6 (p = 0.050) and BDNF (p = 0.006) protein levels compared to controls. Those high-risk offspring in earlier compared to later clinical stages of illness development had higher IL-6 (p = 0.050) and BDNF (p = 0.045) protein levels. After adjustments, only differences in BDNF protein levels remained significant. There was a moderating effect of the BDNF genotype on both gene expression and protein levels in high-risk compared to control offspring. The BDNF genotype also moderated the association between clinical stage and gene expression levels in high-risk offspring. These findings provide support for detectable differences in candidate immune and neurotrophic markers in individuals at high risk of developing bipolar disorder and for detectable changes over the clinical stages of illness development. These associations appear to be moderated by genetic variants.
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Affiliation(s)
- Anne Duffy
- Department of Psychiatry and Hotchkiss Brain Institute (HBI), University of Calgary, TRW Building, 3280 Hospital Drive, NW, Room 4D6, Calgary, AB, T2N 4Z6, Canada,
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Vammen MA, Mikkelsen S, Hansen ÅM, Grynderup MB, Andersen JH, Bonde JP, Buttenschøn HN, Kolstad HA, Kærgaard A, Kærlev L, Mors O, Rugulies R, Thomsen JF. Salivary cortisol and depression in public sector employees: cross-sectional and short term follow-up findings. Psychoneuroendocrinology 2014; 41:63-74. [PMID: 24495608 DOI: 10.1016/j.psyneuen.2013.12.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 12/02/2013] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Increased cortisol levels have been suggested to play a role in the development of depression. An association has been shown in some studies but not consistently. The timing of an association is uncertain, and long-term follow-up studies may miss associations in narrower time windows. In the present study, we examined the association of several cortisol measures and depression in a repeated cross-sectional and short-term follow-up design. Depression was assessed by both self-reported symptoms of depression and clinical interviews. METHOD In 2007, 10,036 public sector employees received a questionnaire along with salivary cortisol test tubes for home administration. Morning (30min after awakening) and evening (2000h) salivary samples were collected. Questionnaires and valid saliva samples were returned from 3536 employees. Approximately 3.6 months later a subsample of the participants collected three morning saliva samples (at awakening, 20min and 40min after awakening) plus an evening sample (2000h); participants with high baseline scores of self-reported depressive symptoms, burnout and perceived stress were invited to a standardized interview (SCAN) to detect clinical depression; and the symptom questionnaire was repeated for subsample participants. The study was repeated in 2009 with questionnaires and salivary test tubes (n=2408). In four cross-sectional and two short-term follow-up analyses odds ratios of depressive symptoms and of clinical depression were estimated by logistic regression for morning, evening, mean and the difference between morning and evening cortisol (slope). For the subsample, awakening response (CAR) and area under the curve (AUC) cortisol measures were calculated. We adjusted for sex, age, income, education, family history of depression, physical activity and alcohol consumption. RESULTS None except one of the measures of salivary cortisol were associated with self-reported depressive symptoms or clinical depression, neither in the four cross-sectional analyses nor in the two short term follow-up analyses. E.g. in 2007, the adjusted odds ratios (OR) of depressive symptoms by a one unit increase in morning and evening cortisol (ln(nmol/litre saliva)) were 1.01 (95% CI: 0.88-1.17) and 1.05 (0.93-1.18), respectively. The one exception was significant at p=0.04 and was considered as due to chance. CONCLUSION In this large study, salivary cortisol was not associated with self-reported symptoms of depression or with clinical depression.
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Affiliation(s)
- Marianne Agergaard Vammen
- Department of Occupational and Environmental Medicine, Bispebjerg University Hospital, Copenhagen, Denmark.
| | - Sigurd Mikkelsen
- Department of Occupational and Environmental Medicine, Bispebjerg University Hospital, Copenhagen, Denmark
| | - Åse Marie Hansen
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark and National Research Centre for the Working Environment, Copenhagen, Denmark
| | | | - Johan Hviid Andersen
- Danish Ramazzini Centre, Department of Occupational Medicine, Regional Hospital Herning, Herning, Denmark
| | - Jens Peter Bonde
- Department of Occupational and Environmental Medicine, Bispebjerg University Hospital, Copenhagen, Denmark
| | | | - Henrik Albert Kolstad
- Danish Ramazzini Centre, Department of Occupational Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Anette Kærgaard
- Danish Ramazzini Centre, Department of Occupational Medicine, Regional Hospital Herning, Herning, Denmark
| | - Linda Kærlev
- Center for Clinical Epidemiology, Odense University Hospital, Odense, Denmark
| | - Ole Mors
- Research Department P, Aarhus University Hospital, Risskov, Denmark
| | - Reiner Rugulies
- National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Jane Frølund Thomsen
- Department of Occupational and Environmental Medicine, Bispebjerg University Hospital, Copenhagen, Denmark
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Carnegie R, Araya R, Ben-Shlomo Y, Glover V, O’Connor TG, O’Donnell KJ, Pearson R, Lewis G. Cortisol awakening response and subsequent depression: prospective longitudinal study. Br J Psychiatry 2014; 204:137-43. [PMID: 24311550 PMCID: PMC3909839 DOI: 10.1192/bjp.bp.113.126250] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
BACKGROUND Some studies have found an association between elevated cortisol and subsequent depression, but findings are inconsistent. The cortisol awakening response may be a more stable measure of hypothalamic-pituitary-adrenal function and potentially of stress reactivity. AIMS To investigate whether salivary cortisol, particularly the cortisol awakening response, is associated with subsequent depression in a large population cohort. METHOD Young people (aged 15 years, n = 841) from the Avon Longitudinal Study of Parents and Children (ALSPAC) collected salivary cortisol at four time points for 3 school days. Logistic regression was used to calculate odds ratios for developing depression meeting ICD-10 criteria at 18 years. RESULTS We found no evidence for an association between salivary cortisol and subsequent depression. Odds ratios for the cortisol awakening response were 1.24 per standard deviation (95% CI 0.93-1.66, P = 0.14) before and 1.12 (95% CI 0.73-1.72, P = 0.61) after adjustment for confounding factors. There was no evidence that the other cortisol measures, including cortisol at each time point, diurnal drop and area under the curve, were associated with subsequent depression. CONCLUSIONS Our findings do not support the hypothesis that elevated salivary cortisol increases the short-term risk of subsequent depressive illness. The results suggest that if an association does exist, it is small and unlikely to be of clinical significance.
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Vinberg M, Miskowiak K, Kessing LV. Serotonin transporter genotype, salivary cortisol, neuroticism and life events: impact on subsequent psychopathology in healthy twins at high and low risk for affective disorder. Prog Neuropsychopharmacol Biol Psychiatry 2014; 48:193-8. [PMID: 24140930 DOI: 10.1016/j.pnpbp.2013.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 09/30/2013] [Accepted: 10/07/2013] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To investigate if cortisol alone or in interaction with other risk factors (familial risk, the serotonin transporter genotype, neuroticism and life events (LEs)) predicts onset of psychiatric disorder in healthy individuals at heritable risk. MATRIAL AND METHODS In a high-risk study, 234 healthy monozygotic and dizygotic twins with or without a co-twin history of affective disorder (high and low risk twins) were baseline assessed. Participants were followed up for seven years and then reassessed with a personal interview revealing whether they had developed psychiatric illness. RESULTS 36 participants (15.4%) developed psychiatric disorder. Using Cox proportional hazards ratio (HR) estimates neither morning nor evening salivary cortisol at baseline did predict illness onset. In multivariate Cox models, the two-way interaction between morning cortisol and LEs lifetime before baseline was significantly associated with onset. Further, the HR of onset was higher concerning individuals carrying the short allele of the 5-HTTPLR and having experienced more LEs lifetime. Familial risk for affective disorder predicted illness and the risk of onset was further increased in individuals at familial risk carrying the short allele of the 5-HTTPLR. CONCLUSIONS Cortisol levels alone do not increase the risk of onset of psychiatric illness but the interaction of a lower cortisol level and the experience of more LEs do. The 5-HTTLPR genotype seems to interact and contribute to increased stress vulnerability in combination with other stress indicators of illness thereby adding to the risk of subsequent psychopathology.
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Affiliation(s)
- Maj Vinberg
- Psychiatric Centre Copenhagen, Rigshospitalet, University Hospital of Copenhagen, Blegdamsvej 9, DK-2100 Copenhagen, Denmark.
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Geoffroy MC, Hertzman C, Li L, Power C. Prospective association of morning salivary cortisol with depressive symptoms in mid-life: a life-course study. PLoS One 2013; 8:e77603. [PMID: 24265676 PMCID: PMC3827055 DOI: 10.1371/journal.pone.0077603] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 09/04/2013] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Associations of cortisol and depression vary at different life-stages, yet population-based, prospective studies are scarce. We aimed to assess associations of morning cortisol with depressive symptoms in mid-life taking account of lifetime psychological health. METHODS Participants were 5,403 men and women from the 1958 British Birth Cohort whose salivary cortisol was assessed at 45y (45min after waking (T1) and 3h later (T2)) and who completed the 5-item Mental-Health Index (MHI-5) about depressive symptoms at age 50y. Lifetime psychological health was identified from child and adult measures. RESULTS For women, higher T2 cortisol at 45y predicted depression (MHI-5 scores ≤52) at 50y (odds ratio [OR]=1.17; 95% confidence intervals [CI] 1.05,1.30 per standard deviation increase in T2 cortisol), attenuating when adjusted for current (45y) and previous (7-42y) psychological health (OR=1.11; 95% CI 0.98, 1.24). Similarly, an association in women of flatter cortisol delta (T2-T1) with depressive symptoms at 50y weakened after adjustment for current (45y) and previous (7-42y) psychological health. For men, lower T2 cortisol at 45y predicted greater depressive symptoms at 50y and the association strengthened when adjusted for lifetime psychological health. Likewise, lower cortisol AUC predicted higher risk of depression for men after adjusting for prior psychological health (OR=0.85; CI 0.72, 1.00). Associations were largely unaltered by control for covariates. CONCLUSIONS In women, higher cortisol in late morning at 45y is prospectively associated with depressive symptoms at 50y through a link with lifetime psychological health. In men, lower cortisol predicts subsequent symptoms, independent of depressive history.
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Affiliation(s)
- Marie-Claude Geoffroy
- Medical Research Council Center of Epidemiology for Child Health, Centre for Paediatric Epidemiology and Biostatistics, University College London Institute of Child Health, University College London, United Kingdom
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Montreal, Canada
| | - Clyde Hertzman
- School of Population and Public Health, Human Early Learning Partnership, University of British Columbia, Vancouver, Canada
| | - Leah Li
- Medical Research Council Center of Epidemiology for Child Health, Centre for Paediatric Epidemiology and Biostatistics, University College London Institute of Child Health, University College London, United Kingdom
| | - Chris Power
- Medical Research Council Center of Epidemiology for Child Health, Centre for Paediatric Epidemiology and Biostatistics, University College London Institute of Child Health, University College London, United Kingdom
- * E-mail:
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Grynderup MB, Kolstad HA, Mikkelsen S, Andersen JH, Bonde JP, Buttenschøn HN, Kærgaard A, Kærlev L, Rugulies R, Thomsen JF, Vammen MA, Mors O, Hansen AM. A two-year follow-up study of salivary cortisol concentration and the risk of depression. Psychoneuroendocrinology 2013; 38:2042-50. [PMID: 23597874 DOI: 10.1016/j.psyneuen.2013.03.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 02/15/2013] [Accepted: 03/19/2013] [Indexed: 11/16/2022]
Abstract
Stress is a suspected cause of depression. High cortisol concentration, a biomarker of an activated stress response, has been found in depressed patients. The aim of this study was to determine if a high level of salivary cortisol is a risk factor of depression. In 2007, we enrolled 4467 public employees. Morning and evening salivary cortisol concentration were measured for each participant. Participants reporting high levels of depressive, burnout, or stress symptoms, assessed by questionnaires were assigned to a psychiatric interview. In this interview 98 participants were diagnosed with depression and subsequently excluded. Two years later in 2009, 2920 participants who had provided at least one valid saliva cortisol measurement at baseline participated at follow up. The psychiatric interviews were repeated and 62 cases of newly onset depression were diagnosed. Odds ratios of depression were estimated for every 1.0nmol/l increase in morning, evening, and daily mean cortisol concentration, as well as for the difference between morning and evening cortisol concentration. The risk of depression decreased by increasing daily mean cortisol concentration and by increasing difference between morning and evening concentrations, while morning and evening cortisol concentrations were not significantly associated with depression. The adjusted odds ratios for 1.0nmol/l increase in morning, evening, and daily mean cortisol concentration were 0.69 (95% CI: 0.45, 1.05), 0.87 (95% CI: 0.59, 1.28), and 0.53 (95% CI: 0.32, 0.90), respectively. The adjusted odds ratio for 1.0nmol/l increase in difference between morning and evening concentration were 0.64 (95% CI: 0.45, 0.90). This study did not support the hypothesis that high salivary cortisol concentration is a risk factor of depression, but indicate that low mean salivary cortisol concentration and a small difference between morning and evening cortisol concentration may be risk factors of depression.
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Mood and metabolic consequences of sleep deprivation as a potential endophenotype' in bipolar disorder. J Affect Disord 2013; 150:284-94. [PMID: 23664567 DOI: 10.1016/j.jad.2013.04.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 04/04/2013] [Accepted: 04/04/2013] [Indexed: 01/27/2023]
Abstract
It has been commonly recognized that circadian rhythm and sleep/wake cycle are causally involved in bipolar disorder. There has been a paucity of systematic research considering the relations between sleep and mood states in bipolar disorder. The current study examines the possible influences of sleep deprivation on mood states and endocrine functions among first-degree relatives of patients with bipolar disorder and healthy controls. Blood samples were taken at two time points in the consecutive mornings at predeprivation and postdeprivation periods. Participants simultaneously completed the Profiles of Mood States at two time points after giving blood samples. Plasma T3 and TSH levels increased after total sleep deprivation in both groups. Sleep deprivation induced TSH levels were reversely associated with depression-dejection among healthy controls. A paradoxical effect was detected for only the first-degree relatives of the patients that changes in plasma cortisol levels negatively linked to depression-dejection and anger-hostility scores after total sleep deprivation. Plasma DHEA levels became correlated with vigor-activity scores after sleep deprivation among first-degree relatives of bipolar patients. On the contrary, significant associations of depression-dejection, anger-hostility, and confusion-bewilderment with the baseline plasma DHEA levels became statistically trivial in the postdeprivation period. Findings suggested that first-degree relatives of patients with bipolar disorder had completely distinct characteristics with respect to sleep deprivation induced responses in terms of associations between endocrine functions and mood states as compared to individuals whose relatives had no psychiatric problems. Considering the relationships between endocrine functions and mood states among relatives of the patients, it appears like sleep deprivation changes the receptor sensitivity which probably plays a pivotal role on mood outcomes among the first-degree relatives of patients with bipolar disorder.
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The DeStress for Success Program: Effects of a stress education program on cortisol levels and depressive symptomatology in adolescents making the transition to high school. Neuroscience 2013; 249:74-87. [DOI: 10.1016/j.neuroscience.2013.01.057] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 01/25/2013] [Accepted: 01/28/2013] [Indexed: 11/21/2022]
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Salivary cortisol and interpersonal functioning: an event-contingent recording study in the offspring of parents with bipolar disorder. Psychoneuroendocrinology 2013; 38:997-1006. [PMID: 23131593 DOI: 10.1016/j.psyneuen.2012.10.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 10/05/2012] [Accepted: 10/05/2012] [Indexed: 11/23/2022]
Abstract
Despite a large body of research in non-human primates, the relationship between naturalistic patterns of social behaviour and basal cortisol levels has been understudied in humans. The present study examined the relationship between patterns of interpersonal functioning and cortisol levels in 23 offspring of parents with bipolar disorder (BD), at high risk for the development of an affective disorder, and 22 offspring of parents with no affective disorder (controls) in late adolescence and young adulthood. Using event-contingent recording, participants rated their dominance, submissiveness, quarrelsomeness, and agreeableness in naturally occurring social interactions over 14 consecutive days and provided salivary cortisol twice daily in the afternoon over the same period. In the full sample, multilevel modelling analyses revealed that dominance was a significant positive predictor of afternoon basal cortisol levels, t(35)=2.58, p<0.05. Moreover, risk group (having a parent with BD or parents with no affective disorder) significantly interacted with mean levels of quarrelsomeness to predict afternoon cortisol levels, t(29)=2.06, p<0.05. Offspring of parents with BD who reported more frequent quarrelsome behaviours exhibited lower levels of afternoon cortisol relative to high-risk offspring reporting few quarrelsome behaviours and control offspring. The results are consistent with evidence that dominance is associated with high cortisol levels in an unstable environment, and suggest that quarrelsomeness among high risk youth contributes to altered hypothalamic-pituitary-adrenal activity.
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Zucchi FCR, Yao Y, Ward ID, Ilnytskyy Y, Olson DM, Benzies K, Kovalchuk I, Kovalchuk O, Metz GAS. Maternal stress induces epigenetic signatures of psychiatric and neurological diseases in the offspring. PLoS One 2013; 8:e56967. [PMID: 23451123 PMCID: PMC3579944 DOI: 10.1371/journal.pone.0056967] [Citation(s) in RCA: 134] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 01/18/2013] [Indexed: 12/21/2022] Open
Abstract
The gestational state is a period of particular vulnerability to diseases that affect maternal and fetal health. Stress during gestation may represent a powerful influence on maternal mental health and offspring brain plasticity and development. Here we show that the fetal transcriptome, through microRNA (miRNA) regulation, responds to prenatal stress in association with epigenetic signatures of psychiatric and neurological diseases. Pregnant Long-Evans rats were assigned to stress from gestational days 12 to 18 while others served as handled controls. Gestational stress in the dam disrupted parturient maternal behaviour and was accompanied by characteristic brain miRNA profiles in the mother and her offspring, and altered transcriptomic brain profiles in the offspring. In the offspring brains, prenatal stress upregulated miR-103, which is involved in brain pathologies, and downregulated its potential gene target Ptplb. Prenatal stress downregulated miR-145, a marker of multiple sclerosis in humans. Prenatal stress also upregulated miR-323 and miR-98, which may alter inflammatory responses in the brain. Furthermore, prenatal stress upregulated miR-219, which targets the gene Dazap1. Both miR-219 and Dazap1 are putative markers of schizophrenia and bipolar affective disorder in humans. Offspring transcriptomic changes included genes related to development, axonal guidance and neuropathology. These findings indicate that prenatal stress modifies epigenetic signatures linked to disease during critical periods of fetal brain development. These observations provide a new mechanistic association between environmental and genetic risk factors in psychiatric and neurological disease.
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Affiliation(s)
- Fabiola C. R. Zucchi
- Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada
- Department of Biological Sciences, University of Mato Grosso State, Caceres, Mato Grosso, Brazil
| | - Youli Yao
- Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada
- Department of Biological Sciences, University of Lethbridge, Lethbridge, Alberta, Canada
| | - Isaac D. Ward
- Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada
| | - Yaroslav Ilnytskyy
- Department of Biological Sciences, University of Lethbridge, Lethbridge, Alberta, Canada
| | - David M. Olson
- Departments of Obstetrics and Gynecology, Pediatrics and Physiology, University of Alberta, Edmonton, Alberta, Canada
| | - Karen Benzies
- Faculty of Nursing, University of Calgary, Calgary, Alberta, Canada
| | - Igor Kovalchuk
- Department of Biological Sciences, University of Lethbridge, Lethbridge, Alberta, Canada
| | - Olga Kovalchuk
- Department of Biological Sciences, University of Lethbridge, Lethbridge, Alberta, Canada
| | - Gerlinde A. S. Metz
- Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada
- * E-mail:
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