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Chen MH, Su TP, Li CT, Lin WC, Wu HJ, Tsai SJ, Bai YM, Mao WC, Tu PC. Effects of melancholic features on positive and negative suicidal ideation in patients with treatment-resistant depression and strong suicidal ideation receiving low-dose ketamine infusion. Eur Arch Psychiatry Clin Neurosci 2024; 274:759-766. [PMID: 38052767 DOI: 10.1007/s00406-023-01735-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 11/24/2023] [Indexed: 12/07/2023]
Abstract
The role of melancholic features on the antisuicidal effect of 0.5 mg/kg ketamine infusion has remained unclear in patients with treatment-resistant depression (TRD) and strong suicidal ideation (SI). Whether ketamine diminishes suicidal ideation in patients with TRD-SI was also unknown. We enrolled 84 patients with TRD-SI, including 27 with melancholic features and 57 without, and then randomly administered a single infusion of 0.5 mg/kg ketamine or 0.045 mg/kg midazolam. The clinician-rated Montgomery-Åsberg Depression Rating Scale (MADRS) item 10, Columbia Suicide Severity Rating Scale-Ideation Severity Subscale (CSSRS-ISS), and self-reported Positive and Negative Suicide Ideation Inventory (PANSI) were used to assess suicidal symptoms from baseline to day 7. Generalized estimating equation models showed that only patients without melancholic features (MADRS item 10: infusion group effect, p = 0.017; CSSRS-ISS: infusion group × time effect, p = 0.008; PANSI-negative suicidal ideation: infusion group effect, p = 0.028) benefited from the antisuicidal effect of low-dose ketamine. The PANSI-positive ideation scores were higher in the ketamine group than in the midazolam group (p = 0.038) for patients with melancholic features. Additional studies are necessary to clarify the neuromechanisms underlying the ketamine-related positive effect against SI and antisuicidal effects among patients with TRD-SI. Additional studies are necessary to clarify the neuromechanisms underlying the ketamine-related positive effect against SI and antisuicidal effects among patients with TRD-SI.
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Affiliation(s)
- Mu-Hong Chen
- Department of Psychiatry, Taipei Veterans General Hospital, No. 201, Sec.2, Shih-Pai Road, Beitou District, Taipei, 112, Taiwan.
- Division of Psychiatry, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan.
| | - Tung-Ping Su
- Department of Psychiatry, Taipei Veterans General Hospital, No. 201, Sec.2, Shih-Pai Road, Beitou District, Taipei, 112, Taiwan
- Division of Psychiatry, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Psychiatry, Cheng Hsin General Hospital, Taipei, Taiwan
| | - Cheng-Ta Li
- Department of Psychiatry, Taipei Veterans General Hospital, No. 201, Sec.2, Shih-Pai Road, Beitou District, Taipei, 112, Taiwan
- Division of Psychiatry, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Wei-Chen Lin
- Department of Psychiatry, Taipei Veterans General Hospital, No. 201, Sec.2, Shih-Pai Road, Beitou District, Taipei, 112, Taiwan
- Division of Psychiatry, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hui-Ju Wu
- Department of Psychiatry, Taipei Veterans General Hospital, No. 201, Sec.2, Shih-Pai Road, Beitou District, Taipei, 112, Taiwan
| | - Shih-Jen Tsai
- Department of Psychiatry, Taipei Veterans General Hospital, No. 201, Sec.2, Shih-Pai Road, Beitou District, Taipei, 112, Taiwan
- Division of Psychiatry, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Ya-Mei Bai
- Department of Psychiatry, Taipei Veterans General Hospital, No. 201, Sec.2, Shih-Pai Road, Beitou District, Taipei, 112, Taiwan
- Division of Psychiatry, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Brain Science, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Wei-Chung Mao
- Department of Psychiatry, Cheng Hsin General Hospital, Taipei, Taiwan
| | - Pei-Chi Tu
- Department of Psychiatry, Taipei Veterans General Hospital, No. 201, Sec.2, Shih-Pai Road, Beitou District, Taipei, 112, Taiwan
- Division of Psychiatry, Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan
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Lei L, Wang YT, Hu D, Gai C, Zhang Y. Astroglial Connexin 43-Mediated Gap Junctions and Hemichannels: Potential Antidepressant Mechanisms and the Link to Neuroinflammation. Cell Mol Neurobiol 2023; 43:4023-4040. [PMID: 37875763 DOI: 10.1007/s10571-023-01426-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 10/14/2023] [Indexed: 10/26/2023]
Abstract
Major depression disorder (MDD) is a neuropsychiatric disorder associated with a high suicide rate and a higher disability rate than any other disease. Evidence suggests that the pathological mechanism of MDD is related to astrocyte dysfunction. Depression is mainly associated with the expression of connexin 43 (Cx43) and the function of Cx43-mediated gap junctions and hemichannels in astrocytes. Moreover, neuroinflammation has been a hotspot in research on the pathology of depression, and Cx43-mediated functions are thought to be involved in neuroinflammation-related depression. However, the specific mechanism of Cx43-mediated functions in neuroinflammation-related depression pathology remains unclear. Therefore, this review summarizes and discusses Cx43 expression, the role of gap junction intercellular communication, and its relationship with neuroinflammation in depression. This review also focuses on the effects of antidepressant drugs (e.g., monoamine antidepressants, psychotropic drugs, and N-methyl-D-aspartate receptor antagonists) on Cx43-mediated function and provides evidence for Cx43 as a novel target for the treatment of MDD. The pathogenesis of MDD is related to astrocyte dysfunction, with reduced Cx43 expression, GJ dysfunction, decreased GJIC and reduced BDNF expression in the depressed brain. The effect of Cx43 on neuroinflammation-related depression involving inflammatory cytokines, glutamate excitotoxicity, and HPA axis dysregulation. Antidepressant drugs targeting Cx43 can effectively relieve depressive symptoms.
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Affiliation(s)
- Lan Lei
- Department of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Sunshine Southern Avenue, Fang-Shan District, Beijing, 102488, China
| | - Ya-Ting Wang
- Department of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Sunshine Southern Avenue, Fang-Shan District, Beijing, 102488, China
| | - Die Hu
- Department of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Sunshine Southern Avenue, Fang-Shan District, Beijing, 102488, China
| | - Cong Gai
- Department of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Sunshine Southern Avenue, Fang-Shan District, Beijing, 102488, China
| | - Yi Zhang
- Department of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Sunshine Southern Avenue, Fang-Shan District, Beijing, 102488, China.
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Śmiarowska M, Pawlicka M, Boroń A, Grzywacz A, Safranow K, Chlubek D, Dziedziejko V. Association between Psychopathological Symptoms and Aggression and Selected Biochemical Parameters in Adolescents with Behavioural and Emotional Disturbances. Int J Mol Sci 2023; 24:ijms24087097. [PMID: 37108259 PMCID: PMC10139169 DOI: 10.3390/ijms24087097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/07/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
Behavioural and emotional disturbances (F92.8) are the most recognized disorders in a developmental psychiatry. As the problem is still alarmingly increasing, the searches for their etiopathogenesis and more effective preventing and therapy methods are required. The aim of the study was to assess the association between the quality of life, some psychopathological features, concentrations of selected immunoprotective (brain-derived neurotrophin, BDNF), and endocrine (cortisol, F) factors while adolescent disturbances. The study was performed in 123 inpatients of a psychiatric ward with F92.8 diagnosis, aged 13-18 years. The complete patients' interview, physical examination, and routine laboratory tests, including serum F and BDNF tests, were performed. All patients completed standardized questionnaires to estimate: the severity of psychopathological symptoms (SCL-90), the level of aggression (Buss-Perry). The changes in the plasma BDNF and F concentrations were shown in patients raised in foster homes and institutions. The significantly lower BDNF was observed in youth from foster and suicide-experienced families. The more severe psychopathological symptoms, especially aggression and hostility, were found in these ones, who abused alcohol, attempted suicide, had lower self-esteem and cognitive processes, and were lacking safety in dysfunctional families.
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Affiliation(s)
- Małgorzata Śmiarowska
- Department of Pharmacokinetics and Therapeutic Drug Monitoring, Pomeranian Medical University, 70-111 Szczecin, Poland
| | - Małgorzata Pawlicka
- Department of Child and Adolescent Psychiatry, Independent Public Specialist Health Care Center "ZDROJE", 70-780 Szczecin, Poland
| | - Agnieszka Boroń
- Department of Clinical and Molecular Biochemistry, Pomeranian Medical University, 70-111 Szczecin, Poland
| | - Anna Grzywacz
- Independent Laboratory of Health Promotion, Pomeranian Medical University in Szczecin, 70-111 Szczecin, Poland
| | - Krzysztof Safranow
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, 70-111 Szczecin, Poland
| | - Dariusz Chlubek
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, 70-111 Szczecin, Poland
| | - Violetta Dziedziejko
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, 70-111 Szczecin, Poland
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Gonda X, Dome P, Serafini G, Pompili M. How to save a life: From neurobiological underpinnings to psychopharmacotherapies in the prevention of suicide. Pharmacol Ther 2023; 244:108390. [PMID: 36940791 DOI: 10.1016/j.pharmthera.2023.108390] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 03/10/2023] [Accepted: 03/16/2023] [Indexed: 03/23/2023]
Abstract
The impact of suicide on our societies, mental healthcare, and public health is beyond questionable. Every year approximately 700 000 lives are lost due to suicide around the world (WHO, 2021); more people die by suicide than by homicide and war. Although suicide is a key issue and reducing suicide mortality is a global imperative, suicide is a highly complex biopsychosocial phenomenon, and in spite of several suicidal models developed in recent years and a high number of suicide risk factors identified, we still have neither a sufficient understanding of underpinnings of suicide nor adequate management strategies to reduce its prevalence. The present paper first overviews the background of suicidal behavior including its epidemiology, prevalence, age and gender correlations and its association with neuropsychiatric disorders as well as its clinical assessment. Then we give an overview of the etiological background, including its biopsychosocial contexts, genetics and neurobiology. Based on the above, we then provide a critical overview of the currently available intervention options to manage and reduce risk of suicide, including psychotherapeutic modalities, traditional medication classes also providing an up-to-date overview on the antisuicidal effects of lithium, as well as novel molecules such as esketamine and emerging medications and further molecules in development. Finally we give a critical overview on our current knowledge on using neuromodulatory and biological therapies, such as ECT, rTMS, tDCS and other options.
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Affiliation(s)
- Xenia Gonda
- Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary; NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary.
| | - Peter Dome
- Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary; National Institute of Mental Health, Neurology and Neurosurgery, Budapest, Hungary
| | - Gianluca Serafini
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), Section of Psychiatry, University of Genoa, Genoa, Italy; IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Maurizio Pompili
- Department of Neurosciences, Mental Health and Sensory Organs, Suicide Prevention Centre, Sant'Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Rome, Italy
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Sherif MA, Khalil MZ, Shukla R, Brown JC, Carpenter LL. Synapses, predictions, and prediction errors: A neocortical computational study of MDD using the temporal memory algorithm of HTM. Front Psychiatry 2023; 14:976921. [PMID: 36911109 PMCID: PMC9995817 DOI: 10.3389/fpsyt.2023.976921] [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: 06/23/2022] [Accepted: 01/16/2023] [Indexed: 02/25/2023] Open
Abstract
INTRODUCTION Synapses and spines play a significant role in major depressive disorder (MDD) pathophysiology, recently highlighted by the rapid antidepressant effect of ketamine and psilocybin. According to the Bayesian brain and interoception perspectives, MDD is formalized as being stuck in affective states constantly predicting negative energy balance. To understand how spines and synapses relate to the predictive function of the neocortex and thus to symptoms, we used the temporal memory (TM), an unsupervised machine-learning algorithm. TM models a single neocortical layer, learns in real-time, and extracts and predicts temporal sequences. TM exhibits neocortical biological features such as sparse firing and continuous online learning using local Hebbian-learning rules. METHODS We trained a TM model on random sequences of upper-case alphabetical letters, representing sequences of affective states. To model depression, we progressively destroyed synapses in the TM model and examined how that affected the predictive capacity of the network. We found that the number of predictions decreased non-linearly. RESULTS Destroying 50% of the synapses slightly reduced the number of predictions, followed by a marked drop with further destruction. However, reducing the synapses by 25% distinctly dropped the confidence in the predictions. Therefore, even though the network was making accurate predictions, the network was no longer confident about these predictions. DISCUSSION These findings explain how interoceptive cortices could be stuck in limited affective states with high prediction error. Connecting ketamine and psilocybin's proposed mechanism of action to depression pathophysiology, the growth of new synapses would allow representing more futuristic predictions with higher confidence. To our knowledge, this is the first study to use the TM model to connect changes happening at synaptic levels to the Bayesian formulation of psychiatric symptomatology. Linking neurobiological abnormalities to symptoms will allow us to understand the mechanisms of treatments and possibly, develop new ones.
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Affiliation(s)
- Mohamed A Sherif
- Lifespan Physician Group, Department of Psychiatry and Human Behavior, The Warren Alpert Medical School of Brown University, Carney Institute for Brain Science, Norman Prince Neurosciences Institute, Providence, RI, United States
| | - Mostafa Z Khalil
- Department of Psychiatry and Behavioral Health, Penn State Milton S. Hershey Medical Center, Penn State College of Medicine, Hershey, PA, United States
| | - Rammohan Shukla
- Department of Neurosciences, The University of Toledo College of Medicine and Life Sciences, Toledo, OH, United States
| | - Joshua C Brown
- Department of Psychiatry and Human Behavior, The Warren Alpert Medical School of Brown University, Butler Hospital, Providence, RI, United States
| | - Linda L Carpenter
- Department of Psychiatry and Human Behavior, The Warren Alpert Medical School of Brown University, Butler Hospital, Providence, RI, United States
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Autry AE. Function of brain-derived neurotrophic factor in the hypothalamus: Implications for depression pathology. Front Mol Neurosci 2022; 15:1028223. [PMID: 36466807 PMCID: PMC9708894 DOI: 10.3389/fnmol.2022.1028223] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/31/2022] [Indexed: 11/17/2022] Open
Abstract
Depression is a prevalent mental health disorder and is the number one cause of disability worldwide. Risk factors for depression include genetic predisposition and stressful life events, and depression is twice as prevalent in women compared to men. Both clinical and preclinical research have implicated a critical role for brain-derived neurotrophic factor (BDNF) signaling in depression pathology as well as therapeutics. A preponderance of this research has focused on the role of BDNF and its primary receptor tropomyosin-related kinase B (TrkB) in the cortex and hippocampus. However, much of the symptomatology for depression is consistent with disruptions in functions of the hypothalamus including changes in weight, activity levels, responses to stress, and sociability. Here, we review evidence for the role of BDNF and TrkB signaling in the regions of the hypothalamus and their role in these autonomic and behavioral functions associated with depression. In addition, we identify areas for further research. Understanding the role of BDNF signaling in the hypothalamus will lead to valuable insights for sex- and stress-dependent neurobiological underpinnings of depression pathology.
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Affiliation(s)
- Anita E. Autry
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, United States
- Department of Psychiatry and Behavioral Sciences, Albert Einstein College of Medicine, Bronx, NY, United States
- *Correspondence: Anita E. Autry,
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Interaction effects of diabetes and brain-derived neurotrophic factor on suicidal ideation in patients with acute coronary syndrome. Sci Rep 2022; 12:6602. [PMID: 35459929 PMCID: PMC9033782 DOI: 10.1038/s41598-022-10557-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 04/01/2022] [Indexed: 11/16/2022] Open
Abstract
Acute coronary syndrome (ACS) is related to an increased risk of suicide. Although both diabetes and the brain-derived neurotrophic factor (BDNF) pathway are closely associated with ACS and suicide, the effects of these factors on suicidal behavior in ACS patients have not been assessed. We investigated the individual and interaction effects of diabetes and BDNF-related markers, namely the serum BDNF (sBDNF) level and the BDNF Val66Met polymorphism, on suicidal ideation (SI) in ACS patients. The presence of diabetes was ascertained, and sBDNF levels and the presence of the BDNF Val66Met polymorphism were measured in 969 patients within 2 weeks after an ACS episode. 711 patients were followed up at 1 year after the ACS episode. SI was assessed using the relevant items of the Montgomery–Åsberg Depression Rating Scale at baseline (acute SI) and the 1-year follow-up (chronic SI). Significant individual effects of low sBDNF levels were found on acute SI. The presence of both diabetes and a low sBDNF level or the BDNF Met/Met genotype was associated with acute SI, with multivariate logistic regression analyses revealing significant interaction effects. The highest frequency of chronic SI was seen in diabetic patients with an sBDNF level in the lowest tertile or with the BDNF Met/Met genotype, although the interaction terms were not statistically significant. Our study suggests that the combination of diabetes and BDNF-related markers, such as the sBDNF level and the BDNF Val66Met polymorphism, might provide a useful predictor of acute SI in ACS patients.
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Joshi A, Akhtar A, Saroj P, Kuhad A, Sah SP. Antidepressant-like effect of sodium orthovanadate in a mouse model of chronic unpredictable mild stress. Eur J Pharmacol 2022; 919:174798. [DOI: 10.1016/j.ejphar.2022.174798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 01/17/2022] [Accepted: 02/01/2022] [Indexed: 02/06/2023]
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Jones GM, Nock MK. MDMA/ecstasy use and psilocybin use are associated with lowered odds of psychological distress and suicidal thoughts in a sample of US adults. J Psychopharmacol 2022; 36:46-56. [PMID: 34983249 DOI: 10.1177/02698811211058923] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Suicide is one of the leading causes of death worldwide and rates within the United States have risen over the past two decades. Hence, there is a critical need for novel tools to treat suicidal ideation and related mental health conditions. 3,4-Methylenedioxymethamphetamine (MDMA)/ecstasy and classic psychedelics may be two such tools. AIMS The aim of this study was to assess non-causal associations between MDMA/ecstasy and classic psychedelic use and psychological distress and suicide risk. METHODS In this study, we examined the aforementioned associations among 484,732 adult participants in the National Survey on Drug Use and Health (2008-2019). RESULTS Lifetime MDMA/ecstasy use was associated with reduced odds of past year suicidal thinking (10% reduced odds; odds ratio (OR) = 0.90; 95% confidence interval, CI = (0.84-0.97); p < 0.01) and past year suicidal planning (OR = 0.88; 95% CI = (0.78-0.99); p < 0.05). Furthermore, lifetime psilocybin use was associated with reduced odds of past month psychological distress (OR = 0.78; 95% CI = (0.73-0.84); p < 0.001) and past year suicidal thinking (OR = 0.90; 95% CI = (0.83-0.96); p < 0.01). Finally, lysergic acid diethylamide (LSD) was associated with increased odds of past year suicidal thinking (OR = 1.07; 95% CI = (1.00-1.15); p < 0.05). CONCLUSION MDMA/ecstasy and psilocybin use are associated with reduced odds of suicidal thinking and related outcomes-though experimental studies are needed to determine whether these associations are causal. These findings call for more research into the efficacy of MDMA/ecstasy and classic psychedelics for treating psychological distress and suicidal thoughts and behaviors, and for updated drug legislation that allows for further investigation into these substances.
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Affiliation(s)
- Grant M Jones
- Department of Psychology, Harvard University, Cambridge, MA, USA
| | - Matthew K Nock
- Department of Psychology, Harvard University, Cambridge, MA, USA
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Fusar-Poli L, Aguglia A, Amerio A, Orsolini L, Salvi V, Serafini G, Volpe U, Amore M, Aguglia E. Peripheral BDNF levels in psychiatric patients with and without a history of suicide attempt: A systematic review and meta-analysis. Prog Neuropsychopharmacol Biol Psychiatry 2021; 111:110342. [PMID: 33961965 DOI: 10.1016/j.pnpbp.2021.110342] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/20/2021] [Accepted: 05/02/2021] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Psychiatric patients are at increased risk of attempting suicide. Several potential biomarkers of suicide risk have been proposed with inconsistent findings. The present paper aimed to evaluate differences in peripheral BDNF levels between psychiatric patients with and without a history of suicide attempts. METHODS We conducted a systematic review and meta-analysis following the PRISMA guidelines. Relevant papers published up to January 5, 2021 were identified searching the electronic databases Web of KnowledgeSM and PsycINFO. A random-effect meta-analysis was conducted using Stata 16. RESULTS Thirteen studies met inclusion criteria. Overall, no significant differences in BDNF levels between the two groups were found (13 studies, n = 1340, Hedge's g = -0.21, 95% CI -0.44 to 0.02). Heterogeneity was substantial (I2 = 72.91%). Subgroup analyses revealed that BDNF levels were significantly reduced in plasma with medium effect size (5 studies, n = 363, Hedge's g = -0.44, 95% CI -0.86 to -0.02), but not in serum (8 studies, n = 977, Hedge's g = -0.09, 95% CI -0.33 to 0.15). No significant differences were found according to the type of diagnosis (major depressive disorder vs. other diagnoses) or the period of suicide attempt (lifetime vs. recent). CONCLUSION The utility of BDNF as a biomarker of suicide attempts in psychiatric patients appears limited to its plasma concentration. Although caution interpretation is needed, our findings may represent a starting point for the design of rigorous case-control studies exploring the association between neurotrophins and suicidal behaviors.
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Affiliation(s)
- Laura Fusar-Poli
- Department of Clinical and Experimental Medicine, Psychiatry Unit, University of Catania, Catania, Italy.
| | - Andrea Aguglia
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, Section of Psychiatry, University of Genoa, Genoa, Italy; IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Andrea Amerio
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, Section of Psychiatry, University of Genoa, Genoa, Italy; IRCCS Ospedale Policlinico San Martino, Genoa, Italy; Department of Psychiatry, Tufts University, Boston, MA, USA
| | - Laura Orsolini
- Unit of Clinical Psychiatry, Department of Clinical Neurosciences/DIMSC, School of Medicine, Polytechnic University of Marche, Ancona, Italy; Drug Misuse and Novel Psychoactive Substances Research Unit, School of Life and Medical Sciences, University of Hertfordshire, Hatfield, United Kingdom
| | - Virginio Salvi
- Unit of Clinical Psychiatry, Department of Clinical Neurosciences/DIMSC, School of Medicine, Polytechnic University of Marche, Ancona, Italy
| | - Gianluca Serafini
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, Section of Psychiatry, University of Genoa, Genoa, Italy; IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Umberto Volpe
- Unit of Clinical Psychiatry, Department of Clinical Neurosciences/DIMSC, School of Medicine, Polytechnic University of Marche, Ancona, Italy
| | - Mario Amore
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, Section of Psychiatry, University of Genoa, Genoa, Italy; IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Eugenio Aguglia
- Department of Clinical and Experimental Medicine, Psychiatry Unit, University of Catania, Catania, Italy
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Ropret S, Kouter K, Zupanc T, Videtic Paska A. BDNF methylation and mRNA expression in brain and blood of completed suicides in Slovenia. World J Psychiatry 2021; 11:1301-1313. [PMID: 35070779 PMCID: PMC8717036 DOI: 10.5498/wjp.v11.i12.1301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/25/2021] [Accepted: 09/17/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Suicide is a major public health problem. Worldwide, around 800000 people die by suicide every year. Suicide is a multifactorial disorder, with numerous environmental and genetic risk factors involved. Among the candidate genes, changes in the BDNF locus at the gene, epigenetic, mRNA, and protein expression levels have been implicated in psychiatric disorders, including suicidal behavior and completed suicides.
AIM To investigate changes in BDNF methylation and expression of four alternative BDNF transcripts for association with completed suicide.
METHODS This case-control study included 42 unrelated male Caucasian subjects, where 20 were control subjects who died following acute cardiac arrest, and 22 were suicide victims who died by hanging. DNA and RNA were extracted from brain tissue (Brodmann area 9 and hippocampus) and from blood. DNA methylation and mRNA expression levels were determined by targeted bisulfite next-generation sequencing and reverse-transcription quantitative PCR. Statistical analysis was done by use of two-tailed Student’s t tests for two independent samples, and the Benjamini-Hochberg procedure was implemented for correction for multiple comparisons.
RESULTS In DNA from brain tissue, there were no significant differences in BDNF methylation between the study groups. However, data showed significantly reduced DNA methylation of the BDNF region upstream of exon I in blood samples of suicide victims compared to the controls (5.67 ± 0.57 vs 6.83 ± 0.64, Pcorr = 0.01). In Brodmann area 9 of the brain of the suicide victims but not in their hippocampus, there was higher expression of BDNF transcript I-IX (NM_170731.4) compared to the controls (0.077 ± 0.024 vs 0.05 ± 0.013, P = 0.042). In blood, expression analysis for the BDNF transcripts was not feasible due to extensive RNA degradation.
CONCLUSION Despite the limitations of the study, the obtained data further support a role for BDNF in suicidality. However, it should be noted that suicidal behavior is a multifactorial disorder with numerous environmental and genetic risk factors involved.
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Affiliation(s)
- Sandra Ropret
- Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, Ljubljana SI-1000, Slovenia
| | - Katarina Kouter
- Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, Ljubljana SI-1000, Slovenia
| | - Tomaž Zupanc
- Institute of Forensic Medicine, Faculty of Medicine, University of Ljubljana, Ljubljana SI-1000, Slovenia
| | - Alja Videtic Paska
- Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, Ljubljana SI-1000, Slovenia
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12
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Kim JM, Kim JW, Kang HJ, Lee JY, Kim SW, Shin IS, Chun BJ, Stewart R. Investigating associations of childhood abuse and serum brain-derived neurotrophic factor levels with suicidal behaviours in patients with depressive disorders. Br J Psychiatry 2021; 219:598-605. [PMID: 35048824 DOI: 10.1192/bjp.2021.82] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND The role of childhood abuse and serum brain-derived neurotrophic factor (BDNF) levels in suicidal behaviour is controversial. AIMS We aimed to investigate the individual and interactive effects of the childhood abuse and serum BDNF on suicidal behaviour before and after pharmacologic treatment in patients with depressive disorders. METHOD At baseline, reported childhood emotional, physical and sexual abuse were ascertained and serum BDNF levels were measured in 1094 patients with depressive disorder, 884 of whom were followed during a 1-year period of stepwise pharmacotherapy. Suicidal behaviours evaluated at baseline were previous suicide attempt and baseline suicide severity, and suicidal behaviours evaluated at follow-up were increased suicide severity and fatal/non-fatal suicide attempt. Individual and interactive associations of any childhood abuse and serum BDNF levels with four types of suicidal behaviours were analysed using logistic regression models, after adjusting relevant covariates. RESULTS Individual associations of childhood abuse were significant only with previous suicide attempt, and no significant individual associations were found for serum BDNF with any suicide outcome. However, the presence of both childhood abuse and lower serum BDNF levels was associated with the highest prevalence/incidence of all four suicidal behaviours, with significant interactions for baseline suicide severity and fatal/non-fatal suicide attempt during follow-up. CONCLUSIONS Synergistic interactive effects of child abuse and serum BDNF levels on suicidal behaviours were found before and after pharmacologic treatment in patients with depressive disorders. Information combining childhood abuse and serum BDNF levels could improve predictions of suicidal behaviour in patients with depressive disorders.
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Affiliation(s)
- Jae-Min Kim
- Department of Psychiatry, Chonnam National University Medical School, Republic of Korea
| | - Ju-Wan Kim
- Department of Psychiatry, Chonnam National University Medical School, Republic of Korea
| | - Hee-Ju Kang
- Department of Psychiatry, Chonnam National University Medical School, Republic of Korea
| | - Ju-Yeon Lee
- Department of Psychiatry, Chonnam National University Medical School, Republic of Korea
| | - Sung-Wan Kim
- Department of Psychiatry, Chonnam National University Medical School, Republic of Korea
| | - Il-Seon Shin
- Department of Psychiatry, Chonnam National University Medical School, Republic of Korea
| | - Byung-Jo Chun
- Department of Emergency Medicine, Chonnam National University Medical School, Republic of Korea
| | - Robert Stewart
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK; and The National Institute for Health Research (NIHR) Maudsley Biomedical Research Centre (BRC), South London and Maudsley NHS Foundation Trust, UK
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13
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Lengvenyte A, Olié E, Strumila R, Navickas A, Gonzalez Pinto A, Courtet P. Immediate and short-term efficacy of suicide-targeted interventions in suicidal individuals: A systematic review. World J Biol Psychiatry 2021; 22:670-685. [PMID: 33783294 DOI: 10.1080/15622975.2021.1907712] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVES To address the extreme suicide risk period following a suicidal crisis, we aimed to assess the current evidence for specific healthcare system-based interventions on suicide-related outcomes within one-week or one-month in individuals with current suicidal ideation (SI) or a recent suicide attempt (SA). METHODS We performed a database (Medline, Academic Search Complete, PsycARTICLES, the Cochrane library, PubMed) and manual reference search for randomised controlled trials, published between March 2000 and March 2020. Antisuicidal efficacy was defined as SI, SA, or a closely related concept. Quality was assessed with the Cochrane Risk of Bias 2 tool for randomised trials. RESULTS Out of 34 trials, five reported ketamine or esketamine superiority over placebo in reducing SI in depressed subjects within one week, while five studies had negative findings. Single trials reported positive results for one-month antisuicidal efficacy of buprenorphine, paroxetine, a crisis response plan, and assertive case management. Most trials were underpowered and had moderate-to-high risk of bias. CONCLUSIONS Preliminary mixed evidence suggests the possible utility of several pharmacological (ketamine, esketamine paroxetine, and buprenorphine) and non-pharmacological (a crisis response plan, and assertive case management) interventions. Only the immediate efficacy of ketamine was supported by multiple studies, and replication is needed.
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Affiliation(s)
- Aiste Lengvenyte
- Department of Emergency Psychiatry and Acute Care, CHU Montpellier, Montpellier, France.,IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France.,Faculty of Medicine, Institute of Clinical Medicine, Psychiatric Clinic, Vilnius University, Vilnius, Lithuania
| | - Emilie Olié
- Department of Emergency Psychiatry and Acute Care, CHU Montpellier, Montpellier, France.,IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France.,French Association of Biological Psychiatry and Neuropsychopharmacology
| | - Robertas Strumila
- Department of Emergency Psychiatry and Acute Care, CHU Montpellier, Montpellier, France.,IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France.,Faculty of Medicine, Institute of Clinical Medicine, Psychiatric Clinic, Vilnius University, Vilnius, Lithuania
| | - Alvydas Navickas
- Faculty of Medicine, Institute of Clinical Medicine, Psychiatric Clinic, Vilnius University, Vilnius, Lithuania
| | - Ana Gonzalez Pinto
- CIBERSAM; Bioaraba, Research Group on Severe Mental Illness; Osakidetza, Araba University Hospital, Psychiatry Service; Faculty of Medicine, Department of Neurosciences, University of the Basque Country UPV / EHU, Vitoria-Gasteiz, Spain.,Spanish Society of Biological Psychiatry
| | - Philippe Courtet
- Department of Emergency Psychiatry and Acute Care, CHU Montpellier, Montpellier, France.,IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France.,French Association of Biological Psychiatry and Neuropsychopharmacology
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14
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Ramos-Rosales DF, Vazquez-Alaniz F, Urtiz-Estrada N, Ramirez-Valles EG, Mendez-Hernádez EM, Salas-Leal AC, Barraza-Salas M. Epigenetic marks in suicide: a review. Psychiatr Genet 2021; 31:145-161. [PMID: 34412082 DOI: 10.1097/ypg.0000000000000297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Suicide is a complex phenomenon and a global public health problem that involves several biological factors that could contribute to the pathophysiology of suicide. There is evidence that epigenetic factors influence some psychiatric disorders, suggesting a predisposition to suicide or suicidal behavior. Here, we review studies of molecular mechanisms of suicide in an epigenetic perspective in the postmortem brain of suicide completers and peripheral blood cells of suicide attempters. Besides, we include studies of gene-specific DNA methylation, epigenome-wide association, histone modification, and interfering RNAs as epigenetic factors. This review provides an overview of the epigenetic mechanisms described in different biological systems related to suicide, contributing to an understanding of the genetic regulation in suicide. We conclude that epigenetic marks are potential biomarkers in suicide, and they could become attractive therapeutic targets due to their reversibility and importance in regulating gene expression.
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Affiliation(s)
| | - Fernando Vazquez-Alaniz
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango
- Hospital General 450. Servicios de Salud de Durango
| | | | | | - Edna M Mendez-Hernádez
- Instituto de Investigación Científica, Universidad Juárez del Estado de Durango, Durango, México
| | - Alma C Salas-Leal
- Instituto de Investigación Científica, Universidad Juárez del Estado de Durango, Durango, México
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15
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Yilmaz R, Öztop DB, Sener EF, Cikili-Uytun M, Dal F, Yildiz E, Sahpolat M, Zararsiz G. BDNF gene expression association with suicide and psychiatric disorders in children and adolescents: (Relationship between BDNF gene expression and suicide). Behav Brain Res 2021; 410:113350. [PMID: 33971247 DOI: 10.1016/j.bbr.2021.113350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 04/01/2021] [Accepted: 05/05/2021] [Indexed: 11/16/2022]
Abstract
OBJECTIVE In the current study, it was aimed to investigate the relationship between BDNF gene expression and childhood suicide attempt, childhood traumatic experiences, and problem-solving skills in children and adolescents. METHODS The suicide group consisted of 100 children and adolescents aged 11-18 years who were referred to our outpatient department due to suicide attempt. For further comparisons, 100 children and adolescents who have no any psychiatric diagnosis were referred to our same outpatient department were selected. A sociodemographic data form, the Schedule for Affective Disorders and Schizophrenia for School-Age Children- Present and Lifetime version (K-SADS-PL), the Suicide Intent Scale (SIS), Problem Solving Inventory (PSI), and the Childhood Trauma Questionnaire (CTQ) were used for both groups. Total RNA was isolated from whole blood samples and BDNF gene expression levels were measured using quantitative real time-polymerase chain reaction (QRT-PCR). RESULTS The total and subscale scores of the PSI and CTQ were found to be significantly higher in the suicide group than in the control group. There was no significant difference between the groups in terms of BDNF gene expression levels. However, gene expression of BDNF was found significantly increased in patients who have any psychiatric disorder compared with the others. CONCLUSION Our results indicate that BDNF gene expression could be more associated with psychiatric disorders rather than suicide attempt in children and adolescents.
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Affiliation(s)
- Rabia Yilmaz
- Kilis State Hospital, Department of Child and Adolescent Psychiatry, Kilis, Turkey
| | - Didem Behice Öztop
- Ankara University, Faculty of Medicine, Department of Child and Adolescent Psychiatry, Ankara, Turkey
| | - Elif Funda Sener
- Erciyes University, Faculty of Medicine, Department of Medical Biology, Kayseri, Turkey
| | - Merve Cikili-Uytun
- Ankara University, Faculty of Medicine, Department of Child and Adolescent Psychiatry, Ankara, Turkey.
| | - Fatma Dal
- Erciyes University, Faculty of Medicine, Genom and Stem Cell Center, Kayseri, Turkey
| | - Emrah Yildiz
- Kilis State Hospital, Department of Psychiatry, Kilis, Turkey
| | - Musa Sahpolat
- Kilis State Hospital, Department of Psychiatry, Kilis, Turkey
| | - Gokmen Zararsiz
- Erciyes University, Faculty of Medicine, Department of Biostatistics, Kayseri, Turkey
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16
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Icick R, Bloch V, Prince N, Karsinti E, Lépine JP, Laplanche JL, Mouly S, Marie-Claire C, Brousse G, Bellivier F, Vorspan F. Clustering suicidal phenotypes and genetic associations with brain-derived neurotrophic factor in patients with substance use disorders. Transl Psychiatry 2021; 11:72. [PMID: 33479229 PMCID: PMC7820499 DOI: 10.1038/s41398-021-01200-5] [Citation(s) in RCA: 3] [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: 12/03/2019] [Revised: 06/13/2020] [Accepted: 07/03/2020] [Indexed: 11/09/2022] Open
Abstract
Suicide attempts (SA), especially recurrent SA or serious SA, are common in substance use disorders (SUD). However, the genetic component of SA in SUD samples remains unclear. Brain-derived neurotrophic factor (BDNF) alleles and levels have been repeatedly involved in stress-related psychopathology. This investigation uses a within-cases study of BDNF and associated factors in three suicidal phenotypes ('any', 'recurrent', and 'serious') of outpatients seeking treatment for opiate and/or cocaine use disorder. Phenotypic characterization was ascertained using a semi-structured interview. After thorough quality control, 98 SNPs of BDNF and associated factors (the BDNF pathway) were extracted from whole-genome data, leaving 411 patients of Caucasian ancestry, who had reliable data regarding their SA history. Binary and multinomial regression with the three suicidal phenotypes were further performed to adjust for possible confounders, along with hierarchical clustering and compared to controls (N = 2504). Bayesian analyses were conducted to detect pleiotropy across the suicidal phenotypes. Among 154 (37%) ever suicide attempters, 104 (68%) reported at least one serious SA and 96 (57%) two SA or more. The median number of non-tobacco SUDs was three. The BDNF gene remained associated with lifetime SA in SNP-based (rs7934165, rs10835210) and gene-based tests within the clinical sample. rs10835210 clustered with serious SA. Bayesian analysis identified genetic correlation between 'any' and 'serious' SA regarding rs7934165. Despite limitations, 'serious' SA was shown to share both clinical and genetic risk factors of SA-not otherwise specified, suggesting a shared BDNF-related pathophysiology of SA in this population with multiple SUDs.
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Affiliation(s)
- Romain Icick
- Assistance Publique-Hôpitaux de Paris (AP-HP), Groupe Hospitalier Saint-Louis-Lariboisière-Fernand Widal, Paris, France. .,INSERM U1144, "Therapeutic Optimization in Neuropsychopharmacology", Paris, France. .,Université de Paris, Inserm UMR-S1144, Paris, France.
| | - Vanessa Bloch
- grid.50550.350000 0001 2175 4109Assistance Publique-Hôpitaux de Paris (AP-HP), Groupe Hospitalier Saint-Louis–Lariboisière–Fernand Widal, Paris, France ,grid.7429.80000000121866389INSERM U1144, “Therapeutic Optimization in Neuropsychopharmacology”, Paris, France ,Université de Paris, Inserm UMR-S1144, Paris, France
| | - Nathalie Prince
- grid.7429.80000000121866389INSERM U1144, “Therapeutic Optimization in Neuropsychopharmacology”, Paris, France ,Université de Paris, Inserm UMR-S1144, Paris, France
| | - Emily Karsinti
- grid.50550.350000 0001 2175 4109Assistance Publique-Hôpitaux de Paris (AP-HP), Groupe Hospitalier Saint-Louis–Lariboisière–Fernand Widal, Paris, France ,grid.7429.80000000121866389INSERM U1144, “Therapeutic Optimization in Neuropsychopharmacology”, Paris, France ,ED139, Paris Nanterre University, Nanterre, France
| | - Jean-Pierre Lépine
- grid.50550.350000 0001 2175 4109Assistance Publique-Hôpitaux de Paris (AP-HP), Groupe Hospitalier Saint-Louis–Lariboisière–Fernand Widal, Paris, France ,grid.7429.80000000121866389INSERM U1144, “Therapeutic Optimization in Neuropsychopharmacology”, Paris, France ,Université de Paris, Inserm UMR-S1144, Paris, France
| | - Jean-Louis Laplanche
- grid.50550.350000 0001 2175 4109Assistance Publique-Hôpitaux de Paris (AP-HP), Groupe Hospitalier Saint-Louis–Lariboisière–Fernand Widal, Paris, France
| | - Stéphane Mouly
- grid.50550.350000 0001 2175 4109Assistance Publique-Hôpitaux de Paris (AP-HP), Groupe Hospitalier Saint-Louis–Lariboisière–Fernand Widal, Paris, France ,grid.7429.80000000121866389INSERM U1144, “Therapeutic Optimization in Neuropsychopharmacology”, Paris, France ,Université de Paris, Inserm UMR-S1144, Paris, France
| | - Cynthia Marie-Claire
- grid.7429.80000000121866389INSERM U1144, “Therapeutic Optimization in Neuropsychopharmacology”, Paris, France ,Université de Paris, Inserm UMR-S1144, Paris, France
| | - Georges Brousse
- grid.494717.80000000115480420Inserm UMR-1107, Neuro-Dol, Université Clermont-Auvergne, Clermont-Ferrand, France
| | - Frank Bellivier
- grid.50550.350000 0001 2175 4109Assistance Publique-Hôpitaux de Paris (AP-HP), Groupe Hospitalier Saint-Louis–Lariboisière–Fernand Widal, Paris, France ,grid.7429.80000000121866389INSERM U1144, “Therapeutic Optimization in Neuropsychopharmacology”, Paris, France ,Université de Paris, Inserm UMR-S1144, Paris, France
| | - Florence Vorspan
- grid.50550.350000 0001 2175 4109Assistance Publique-Hôpitaux de Paris (AP-HP), Groupe Hospitalier Saint-Louis–Lariboisière–Fernand Widal, Paris, France ,grid.7429.80000000121866389INSERM U1144, “Therapeutic Optimization in Neuropsychopharmacology”, Paris, France ,Université de Paris, Inserm UMR-S1144, Paris, France
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17
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Roy B, Dwivedi Y. Modeling endophenotypes of suicidal behavior in animals. Neurosci Biobehav Rev 2021; 128:819-827. [PMID: 33421543 DOI: 10.1016/j.neubiorev.2020.12.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/25/2020] [Accepted: 12/31/2020] [Indexed: 12/26/2022]
Abstract
Suicide is a major public health concern. One of the common contributors to the increased risk for suicide is the genetic constitution of individuals, which determines certain endophenotypic traits used as quantifiable measure of neurobiological functions. Therefore, a logical deconstruction of the originating endophenotypes associated with suicidal risk could provide a better understanding of this complex disorder. In this regard, non-human animals can be a useful resource to test endophenotypes of suicidal behavior and the neurobiology underlying these endophenotypes. In this review, we have focused on the neurobiological abnormalities, primarily genetic and epigenetic abnormalities, associated with suicidal behavior and the scope of their modeling in animals. This can substantially advance the current understanding of suicidal behavior manifested with certain trait-based endophenotypes and may provide an opportunity to test novel hypotheses as well as aid in the development of treatment opportunities and risk assessment.
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Affiliation(s)
- Bhaskar Roy
- Department of Psychiatry and Behavioral Neurobiology, 1720 7(th) Avenue South, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Yogesh Dwivedi
- Department of Psychiatry and Behavioral Neurobiology, 1720 7(th) Avenue South, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
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18
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Dhrisya C, Prasathkumar M, Becky R, Anisha S, Sadhasivam S, Essa MM, Chidambaram SB, Al-Balushi B, Guillemin GJ, Qoronfleh MW. Social and Biological Parameters Involved in Suicide Ideation During the COVID-19 Pandemic: A Narrative Review. Int J Tryptophan Res 2020; 13:1178646920978243. [PMID: 35185341 PMCID: PMC8851148 DOI: 10.1177/1178646920978243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/08/2020] [Indexed: 12/24/2022] Open
Abstract
Fear is an indispensable characteristic of any infectious disease, and the alarm will be further amplified when the infection spreads uncontrollable, unpredictable, and global. The novel corona virus (SARS CoV-2) lead Covid-19, has been declared as a global emergency by WHO as it has affected millions of people with a high mortality rate. The non-availability of medicine for Covid-19 and the various control measures such as social distancing, self-isolation, house quarantine, and the new normal implementation by different nations across the world to control the spread of Covid-19 made people vulnerable to fear and anxiety. As a result, considerable number of Covid-19-related suicidal deaths has been reported across the world during this pandemic. There have been several studies which describe the psychosocial aspects of suicidal ideation. However, the research on the biological aspects of suicidal ideation/suicidal risk factors that are related to pandemic are unreported. Hence this review article is intended to provide a comprehensive analysis of suicidal deaths during Covid-19 and also aimed to addresses the possible link between suicidal ideation and different factors, including psycho-social, behavioral, neurobiological factors (proximal, distal, and inflammatory) and immunity. The alterations in glutamatergic and GABAergic neurotransmitters had upregulated the GABARB3, GABARA4, GABARA3, GABARR1, GABARG2, and GAD2 gene expressions in suicidal victims. The changes in the Kynurenine (KYN) pathway, Hypothalamus-Pituitary-Adrenal axis (HPA axis) hyperactivation, and dysregulation of serotonin biosynthesis would significantly alter the brain chemistry in people with suicide ideation.
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Affiliation(s)
- Chenthamara Dhrisya
- Bioprocess and Biomaterials Laboratory, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, India
| | - Murugan Prasathkumar
- Bioprocess and Biomaterials Laboratory, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, India
| | - Robert Becky
- Bioprocess and Biomaterials Laboratory, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, India
| | - Salim Anisha
- Bioprocess and Biomaterials Laboratory, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, India
| | - Subramaniam Sadhasivam
- Bioprocess and Biomaterials Laboratory, Department of Microbial Biotechnology, Bharathiar University, Coimbatore, India
- Department of Extension and Career Guidance, Bharathiar University, Coimbatore, India
| | - Musthafa Mohamed Essa
- Department of Food Science and Nutrition, CAMS, Sultan Qaboos University, Muscat, Oman
- Ageing and Dementia Research Group, Sultan Qaboos University, Muscat, Oman
| | - Saravana Babu Chidambaram
- Centre for Experimental Pharmacology & Toxicology (CPT), JSS Academy of Higher Education & Research, Mysuru, India
| | - Buthainah Al-Balushi
- Department of Food Science and Nutrition, CAMS, Sultan Qaboos University, Muscat, Oman
| | - Gilles J Guillemin
- Neuroinflammation Group, Faculty of Medicine and Health Sciences, Macquarie University, NSW, Australia
| | - M Walid Qoronfleh
- Research & Policy Department, World Innovation Summit for Health (WISH), Qatar Foundation, Doha, Qatar
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Fan XX, Yuan J, Wei YJ, Zhou F, Xu L, Zhang Y, Meng JY, Jin XL, Yang JZ. Association between suicide risk severity and sarcopenia in non-elderly Chinese inpatients with major depressive disorder. BMC Psychiatry 2020; 20:345. [PMID: 32616039 PMCID: PMC7331122 DOI: 10.1186/s12888-020-02763-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 06/25/2020] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Sarcopenia is a skeletal muscle disorder. Recent studies have shown an association between muscle health and suicide. However, there have been no previous studies on the relationship between suicide risk severity and sarcopenia in major depressive disorder (MDD). This study aimed to explore the association between suicide risk severity and sarcopenia in non-elderly Chinese inpatients with MDD. METHODS The first-episode drug-naïve MDD inpatients aged 20-59 years with the 24-item Hamilton Rating Scale for Depression (HAMD-24) scores of >20 were included, who were then classified into low, intermediate, high and very high suicide risk groups according to the Nurses' Global Assessment of Suicide Risk (NGASR). The HAMD-24, the Hamilton Rating Scale for Anxiety (HAMA) and the SARC-F questionnaire were used to assess depression severity, anxiety severity and sarcopenia, respectively. The plasma levels of cortisol and adrenocorticotropic hormone (ACTH) were measured. RESULTS A total of 192 MDD inpatients (122 females, 70 males; aged 39.3 ± 11.7 years) were included, with 12.5% meeting criteria for sarcopenia. There were significant differences in gender, HAMD score and prevalence of sarcopenia among the suicide risk groups. Adjusted ordinal regression analysis showed that sarcopenia was significantly associated with more severe suicide risk (OR = 2.39, 95%CI 1.02-5.58, p = 0.044) independent of depression severity. CONCLUSIONS This study revealed that sarcopenia was significantly associated with higher suicide risk in non-elderly Chinese MDD inpatients after adjustment for depression severity. Intervention of sarcopenia might be effective in reducing the risk of suicide in non-elderly MDD patients.
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Affiliation(s)
- Xin-Xin Fan
- grid.415444.4Department of Psychiatry, The Second Affiliated Hospital of Kunming Medical University, 374 Dianmian Av, Kunming, 650101 Yunnan China
| | - Jing Yuan
- grid.415444.4Department of Psychiatry, The Second Affiliated Hospital of Kunming Medical University, 374 Dianmian Av, Kunming, 650101 Yunnan China
| | - Yu-Jun Wei
- grid.415444.4Department of Psychiatry, The Second Affiliated Hospital of Kunming Medical University, 374 Dianmian Av, Kunming, 650101 Yunnan China
| | - Fang Zhou
- grid.415444.4Department of Psychiatry, The Second Affiliated Hospital of Kunming Medical University, 374 Dianmian Av, Kunming, 650101 Yunnan China
| | - Li Xu
- grid.415444.4Department of Psychiatry, The Second Affiliated Hospital of Kunming Medical University, 374 Dianmian Av, Kunming, 650101 Yunnan China
| | - Yan Zhang
- grid.415444.4Department of Psychiatry, The Second Affiliated Hospital of Kunming Medical University, 374 Dianmian Av, Kunming, 650101 Yunnan China
| | - Jun-Yu Meng
- grid.415444.4Department of Psychiatry, The Second Affiliated Hospital of Kunming Medical University, 374 Dianmian Av, Kunming, 650101 Yunnan China
| | - Xiao-Long Jin
- grid.459918.8Department of Geriatrics, The Sixth Affiliated Hospital of Kunming Medical University (People’s Hospital of Yuxi), Yuxi, Yunnan China
| | - Jian-Zhong Yang
- Department of Psychiatry, The Second Affiliated Hospital of Kunming Medical University, 374 Dianmian Av, Kunming, 650101, Yunnan, China.
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20
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Nyberg J, Gustavsson S, Åberg MAI, Kuhn HG, Waern M. Late-adolescent risk factors for suicide and self-harm in middle-aged men: explorative prospective population-based study. Br J Psychiatry 2020; 217:370-376. [PMID: 31690353 DOI: 10.1192/bjp.2019.243] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Recent reports show alarmingly high rates of suicide in middle-aged men, yet there are few long-term prospective studies that focus on suicidal behaviour in men in this age group. AIMS To prospectively explore associations of potential risk factors at age 18 with suicide and self-harm in middle-aged men. METHOD A population-based Swedish longitudinal cohort study of male conscripts with no history of self-harm at enlistment in 1968-1989 (n = 987 583). Conscription examinations included measures of cognitive performance, stress resilience, psychiatric diagnoses, body mass index (BMI), cardiovascular fitness and muscle strength. Suicides and self-harm at age 45-65 years were identified in the National Hospital Register and Swedish Cause of Death Register. Risks were calculated using Cox proportional hazards models. RESULTS Low stress resilience (cause-specific hazard ratio CHR = 2.31, 95% CI 1.95-2.74), low cognitive ability (CHR = 2.01, 95% CI 1.71-2.37) as well as psychiatric disorders and low cardiovascular fitness in late adolescence were associated with increased risk for suicide in middle-aged men. Similar risk estimates were obtained for self-harm. In addition, high and low BMI as well as low muscle strength were associated with increased risk of self-harm. Associations also remained significant after exclusion of men with self-harm before age 45. CONCLUSIONS This prospective study provides life-course perspective support that psychological and physical characteristics in late adolescence may have long-lasting consequences for suicidal behaviour in middle-aged men, a very large population at heightened risk of suicide.
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Affiliation(s)
- Jenny Nyberg
- Postdoctoral Researcher, Section for Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg; and Region Västra Götaland, Sahlgrenska University Hospital, Neurology Clinic, Gothenburg, Sweden
| | - Sara Gustavsson
- Statistical Researcher, Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden
| | - Maria A I Åberg
- Associate Professor, Department of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg; and Region Västra Gtaland, Närhälsan Askim Vårdcentral, Gothenburg, Sweden
| | - H Georg Kuhn
- Professor, Section for Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Sweden; and Centre for Stroke Research and Neurocure Cluster of Excellence, Charité - Universitätsmedizin Berlin, Germany
| | - Margda Waern
- Professor, Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg; and Region Västra Götaland, Sahlgrenska University Hospital, Psychosis Clinic, Gothenburg, Sweden
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Anxiolytic Effect of Alcohol-Water Extracted Suanzaoren-Wuweizi Herb-Pair by Regulating ECS-BDNF-ERK Signaling Pathway Expression in Acute Restraint Stress Male Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:2078932. [PMID: 32655658 PMCID: PMC7317328 DOI: 10.1155/2020/2078932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 02/28/2020] [Accepted: 03/24/2020] [Indexed: 01/04/2023]
Abstract
Herb-pairs are the basic units of composition in Chinese herbal formulae, where the bridge linking Chinese medicine and prescription consists of two Chinese medicine herbs. The Suanzaoren-Wuweizi herb-pair (SWHP) is commonly used as a sedative or tranquilizer. SWHP has been demonstrated to exert an antianxiety effect in animal models of anxiety. However, little information about its mechanism is available and the effects of SWHP have not been investigated. This study examined the effects of SWHP on ameliorating anxiety-like behaviors by regulating endocannabinoids system (ECS)-brain-derived neurotrophic factor (BDNF)-extracellular regulated protein kinases (ERK) signaling pathway expression, induced by restraint stress (RS) procedures. The antianxiety effects of SWHP on RS rats were then examined through the open-field test (OF) and the elevated plus maze test (EPM). The concentration of BNDF, ERK1/2, p-ERK1/2, cAMP-response element binding protein (CREB), and p-CREB expression in the prefrontal cortex and hippocampus of the rats was then measured by western blot. The number of positive cells of CB1 and CB2 in the rats' hippocampus CA1 region was measured by immunohistochemistry. These results gave compelling evidence that SWHP could modify anxiety-like behaviors of RS rats through regulation of the ECS-BDNF-ERK signaling pathway. Our study demonstrated that SWHP improved anxiety-like behaviors in RS rat models by regulating the ECS-BDNF-ERK signaling pathway. The findings indicate that SWHP may have a therapeutic application in the RS model of anxiety disorder, which proposes a potential new direction for research into anxiety disorders regarding mechanisms and the development of novel antianxiety drugs.
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Pilkay SR, Combs-Orme T, Tylavsky F, Bush N, Smith AK. Maternal trauma and fear history predict BDNF methylation and gene expression in newborns. PeerJ 2020; 8:e8858. [PMID: 32509442 PMCID: PMC7247527 DOI: 10.7717/peerj.8858] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/05/2020] [Indexed: 01/27/2023] Open
Abstract
Trauma and related fear exert significant influence on mental and physical health throughout the lifespan and are associated with intergenerational patterns of development, health, and behavior. DNA methylation and gene expression are involved in our developmental adaptations to our experiences and can be influenced by social interventions. Patterns of DNA methylation and expression of a gene involved in neurodevelopment and psychiatric risk (BDNF) have been linked with childhood trauma. Given the intergenerational patterns of health and behavior, and previous links between childhood trauma and BDNF methylation and expression, this study investigated the potential for maternal history of traumatic experiences to influence development in her newborn, via changes in her newborn’s BDNF methylation and expression. We found that mothers’ trauma history was associated with epigenetic regulation of BDNF in their newborns. Moreover, the association between maternal trauma and BDNF methylation and expression patterns were moderated by newborn sex. Male newborns showed increased BDNF expression with maternal exposure to child abuse (p = .001), and increased BDNF methylation with greater maternal fear (p = .001). Female newborns showed reduced BDNF expression with greater maternal fear (p = .004). Practitioners strive to identify prevention and intervention avenues that will reduce the harmful effects of trauma. Future research should consider the potential for maternal historical trauma experiences to influence offspring DNA methylation and gene expression in a manner that could alter development and inform novel prevention strategies.
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Affiliation(s)
- Stefanie R Pilkay
- School of Social Work, Syracuse University, Syracuse, NY, United States of America
| | - Terri Combs-Orme
- College of Social Work, University of Tennessee-Knoxville, Knoxville, TN, United States of America
| | - Frances Tylavsky
- Department of Preventive Medicine, University of Tennessee-Memphis, Memphis, TN, United States of America
| | - Nicole Bush
- Department of Psychiatry, University of California, San Francisco, CA, United States of America.,Department of Pediatrics, University of California, San Francisco, CA, United States of America
| | - Alicia K Smith
- Department of Gynecology and Obstetrics, Emory University, Atlanta, GA, United States of America
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Kumar A, Kumar P, Pareek V, Faiq MA, Narayan RK, Raza K, Prasoon P, Sharma VK. Neurotrophin mediated HPA axis dysregulation in stress induced genesis of psychiatric disorders: Orchestration by epigenetic modifications. J Chem Neuroanat 2019; 102:101688. [DOI: 10.1016/j.jchemneu.2019.101688] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/22/2019] [Accepted: 09/26/2019] [Indexed: 12/11/2022]
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24
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Chadda RK, Gupta A. Looking into biological markers of suicidal behaviours. Indian J Med Res 2019; 150:328-331. [PMID: 31823914 PMCID: PMC6902373 DOI: 10.4103/ijmr.ijmr_227_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Indexed: 11/23/2022] Open
Affiliation(s)
- Rakesh Kumar Chadda
- Department of Psychiatry, National Drug Dependence Treatment Centre, All India Institute of Medical Sciences, New Delhi 110 029, India
| | - Ankit Gupta
- Department of Psychiatry, National Drug Dependence Treatment Centre, All India Institute of Medical Sciences, New Delhi 110 029, India
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25
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Rafa-Zabłocka K, Kreiner G, Bagińska M, Nalepa I. The influence of CaMKII and ERK phosphorylation on BDNF changes observed in mice selectively devoid of CREB in serotonergic or noradrenergic neurons. Pharmacol Rep 2019; 71:753-761. [PMID: 31351316 DOI: 10.1016/j.pharep.2019.04.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 03/28/2019] [Accepted: 04/08/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND The transcription factor CREB and the neurotrophin BDNF are important mood regulators due to their profound role in controlling the neuronal plasticity. Our previously published results from transgenic mice functionally lacking CREB in chosen neural populations have shown that BDNF upregulation evoked by chronic treatment with fluoxetine seems to be dependent on CREB residing exclusively in serotonergic neurons. To further elucidate this observation, we focused on the representative signaling cascades engaged in the regulation of BDNF production. METHODS The study was carried out on mice lacking CREB in noradrenergic (Creb1DBHCre) or serotonergic (Creb1TPH2CreERT2) neurons in CREM deficient background. Animals received fluoxetine (10 mg/kg, ip) or desipramine (20 mg/kg, ip) for 21 days. The expression of following proteins and their phosphorylated forms was assessed by Western blot: CREB, BDNF, CaMKIIα, ERK1/2. RESULTS We showed that consistent with previously observed BDNF upregulation, chronic treatment with fluoxetine causes an increase in the pool of active CaMKIIα in w/t males, while in Creb1TPH2CreERT2 mutants, this effect ceased along with the observed decrease in ERK1/2 phosphorylation. These effects were region- and sex-specific. We did not observe a similar pattern of changes regarding the levels of BDNF expression and the CaMKIIα, ERK1/2 kinases in Creb1DBHCre mice exposed to desipramine. However, sex-dependent changes in the regulation of CaMKIIα and ERK1/2 activity were also observed. CONCLUSIONS Our study highlights the pivotal role of CREB in response to antidepressants, emphasizing different sex-dependent vulnerabilities to particular drugs and the important impact of CREM on the effects of CREB deletion.
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Affiliation(s)
- Katarzyna Rafa-Zabłocka
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland
| | - Grzegorz Kreiner
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland.
| | - Monika Bagińska
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland
| | - Irena Nalepa
- Department of Brain Biochemistry, Maj Institute of Pharmacology, Polish Academy of Sciences, Kraków, Poland
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26
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Pedrotti Moreira F, Cardoso TC, Mondin TC, Wiener CD, de Mattos Souza LD, Oses JP, Jansen K, da Silva RA. Serum level of nerve growth factor is a potential biomarker of conversion to bipolar disorder in women with major depressive disorder. Psychiatry Clin Neurosci 2019; 73:590-593. [PMID: 31170316 DOI: 10.1111/pcn.12896] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 05/23/2019] [Accepted: 06/02/2019] [Indexed: 12/29/2022]
Abstract
AIM The aim of this study was to identify biomarkers associated with major depressive disorder (MDD) and conversion from MDD to bipolar disorder (BD) in an outpatient sample of women. METHODS This was a longitudinal study including women diagnosed with MDD and aged 18 to 60 years. The follow-up was 3 years. The diagnosis was performed using the Mini International Neuropsychiatric Interview Plus. Blood collection was just performed in the first phase. Serum interleukin-6, tumor necrosis factor-α, brain-derived neurotrophic factor, glial cell-derived neurotrophic factor, and nerve growth factor (NGF) levels were measured using a commercial immunoassay kit. RESULTS We included 156 women. The conversion rate from MDD to BD was 15.4% (n = 24). NGF serum levels were increased in patients who converted to BD compared to the remitted MDD group and current MDD group (P = 0.013). The Bonferroni post-hoc test for multiple comparisons revealed significant differences for higher NGF levels in patients who converted to BD compared to patients with current MDD (P = 0.037). Interleukin-6, tumor necrosis factor-α, brain-derived neurotrophic factor, and glial cell-derived neurotrophic factor serum levels did not differ among the groups. CONCLUSION Our results suggest that NGF might be a useful biomarker associated with early detection of conversion to BD, helping clinicians in the clinical diagnosis.
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Affiliation(s)
| | - Taiane C Cardoso
- Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil.,Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Canada
| | - Thaíse C Mondin
- Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil.,Department of Psychology, Federal University of Pelotas, Pelotas, Brazil
| | - Carolina D Wiener
- Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil
| | | | - Jean P Oses
- Department of Biochemistry, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Karen Jansen
- Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil
| | - Ricardo A da Silva
- Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Brazil
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27
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An examination of genes, stress and suicidal behavior in two First Nations communities: The role of the brain-derived neurotropic factor gene. Psychiatry Res 2019; 275:247-252. [PMID: 30933702 DOI: 10.1016/j.psychres.2019.02.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 02/14/2019] [Accepted: 02/15/2019] [Indexed: 12/14/2022]
Abstract
Suicide claims over 800,000 lives each year worldwide. Suicide rates in indigenous populations in Canada are about double that of the national average, making it a serious public health issue. Numerous factors are involved in suicide risk, including genetic factors, as well as various psychosocial stressors, such as historical experience with the Indian Residential School system for Indigenous populations, as well as protective variables such as social support. Here, we report the first genetic study of suicidal behaviors that includes multiple measures of stress and social supports. We investigated the role of the functional Val66Met marker (rs6265) in the Brain-Derived Neurotropic Factor (BDNF) gene in suicidal ideation and suicide attempt in a First Nations community sample (N = 278). We did not find a significant association between the BDNF rs6265 marker and suicidal behaviors. We found childhood adversities, recent life stress, chronic stress, perceived stress, difficulties, and hazardous alcohol use to be associated with both suicidal ideation and suicide attempt. Thus, while additional studies with larger samples are required to elucidate the genetic component of suicide, addressing environmental stressors may be important for suicide prevention.
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28
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Plans L, Barrot C, Nieto E, Rios J, Schulze TG, Papiol S, Mitjans M, Vieta E, Benabarre A. Association between completed suicide and bipolar disorder: A systematic review of the literature. J Affect Disord 2019; 242:111-122. [PMID: 30173059 DOI: 10.1016/j.jad.2018.08.054] [Citation(s) in RCA: 139] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 07/25/2018] [Accepted: 08/12/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Completed suicide is a major cause of death in bipolar disorder (BD) patients. OBJECTIVE The aim of this paper is to provide an overall review of the existing literature of completed suicide in BD patients, including clinical and genetic data DATA SOURCES: We performed a systematic review of English and non-English articles published on MEDLINE/PubMed, PsycInfo and Cochrane database (1970-2017). Additional studies were identified by contacting clinical experts, searching bibliographies, major textbooks and website of World Health Organization. Initially we did a broad search for the association of bipolar disorder and suicide and we were narrowing the search in terms included "bipolar disorder" and "completed suicide". STUDY SELECTION Inclusion criteria were articles about completed suicide in patients with BD. Articles exclusively focusing on suicide attempts and suicidal behaviour have been excluded. We used PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) consensus for drafting this systematic review. RESULTS The initial search generated 2806 articles and a total of 61 meeting our inclusion criteria. We reviewed epidemiological data, genetic factors, risk factors and treatment of completed suicide in BD. Suicide rates in BD vary between studies but our analyses show that they are approximately 20-30-fold greater than in general population. The highest risk of successful suicide was observed in BD-II subjects. The heritability of completed suicide is about 40% and some genes related to major neurotransmitter systems have been associated with suicide. Lithium is the only treatment that has shown anti-suicide potential. LIMITATIONS The most important limitation of the present review is the limited existing literature on completed suicide in BD. CONCLUSIONS BD patients are at high risk for suicide. It is possible to identify some factors related to completed suicide, such as early onset, family history of suicide among first-degree relatives, previous attempted suicides, comorbidities and treatment. However it is necessary to promote research on this serious health problem.
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Affiliation(s)
- L Plans
- Mental Health Division of Althaia, Xarxa Assistencial Universitària de Manresa, Catalonia, Spain
| | - C Barrot
- Forensic Genetic Laboratori, University of Barcelona, Catalonia, Spain
| | - E Nieto
- Mental Health Division of Althaia, Xarxa Assistencial Universitària de Manresa, Catalonia, Spain
| | - J Rios
- Universitat Autònoma de Barcelona, Laboratório de Bioestatística e Epidemiologia, Barcelona, Spain; Hospital Clínic, IDIBAPS, Bioestadística y Plataforma de Gestión de Datos, Barcelona, Spain
| | - T G Schulze
- Institute of Psychiatric Phenomics and Genomics (IPPG), University Hospital, Ludwig Maximilian University, Munich, Germany
| | - S Papiol
- Institute of Psychiatric Phenomics and Genomics (IPPG), University Hospital, Ludwig Maximilian University, Munich, Germany; Department of Psychiatry and Psychotherapy, University Hospital, Ludwig Maximilian University, Munich, Germany
| | - M Mitjans
- Clinical Neuroscience, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - E Vieta
- Bipolar Disorder Program, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain.
| | - A Benabarre
- Bipolar Disorder Program, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
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29
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Sun Y, Blumberger DM, Mulsant BH, Rajji TK, Fitzgerald PB, Barr MS, Downar J, Wong W, Farzan F, Daskalakis ZJ. Magnetic seizure therapy reduces suicidal ideation and produces neuroplasticity in treatment-resistant depression. Transl Psychiatry 2018; 8:253. [PMID: 30470735 PMCID: PMC6251931 DOI: 10.1038/s41398-018-0302-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 05/05/2018] [Accepted: 06/05/2018] [Indexed: 12/28/2022] Open
Abstract
Therapeutic seizures may work for treatment-resistant depression (TRD) by producing neuroplasticity. We evaluated whether magnetic seizure therapy (MST) produces changes in suicidal ideation and neuroplasticity as indexed through transcranial magnetic stimulation and electroencephalography (TMS-EEG) of the dorsolateral prefrontal cortex (DLPFC). Twenty-three patients with TRD were treated with MST. Changes in suicidal ideation was assessed through the Scale for Suicidal Ideation (SSI). Before and after the treatment course, neuroplasticity in excitatory and inhibitory circuits was assessed with TMS-EEG measures of cortical-evoked activity (CEA) and long-interval cortical inhibition (LICI) from the left DLPFC, and the left motor cortex as a control condition. As in our previous report, the relationship between TMS-EEG measures and suicidal ideation was examined with the SSI. Results show that 44.4% of patients experienced resolution of suicidal ideation. Based on DLPFC assessment, MST produced significant CEA increase over the frontal central electrodes (cluster p < 0.05), but did not change LICI on a group level. MST also reduced the SSI scores (p < 0.005) and the amount of reduction correlated with the decrease in LICI over the right frontal central electrodes (cluster p < 0.05; rho = 0.73 for Cz). LICI change identified patients who were resolved of suicidal ideation with 90% sensitivity and 88% specificity (AUC = 0.9, p = 0.004). There was no significant finding with motor cortex assessment. Overall, MST produced significant rates of resolution of suicidal ideation. MST also produced neuroplasticity in the frontal cortex, likely through long-term potentiation (LTP)-like mechanisms. The largest reduction in suicidal ideation was demonstrated in patients showing concomitant decreases in cortical inhibition-a mechanism linked to enhanced LTP-like plasticity. These findings provide insights into the mechanisms through which patients experience resolution of suicidal ideation following seizure treatments in depression.
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Affiliation(s)
- Yinming Sun
- 0000 0001 2157 2938grid.17063.33Temerty Centre for Therapeutic Brain Intervention, Centre for Addiction and Mental Health, University of Toronto, Toronto, ON Canada
| | - Daniel M. Blumberger
- 0000 0001 2157 2938grid.17063.33Temerty Centre for Therapeutic Brain Intervention, Centre for Addiction and Mental Health, University of Toronto, Toronto, ON Canada ,0000 0001 2157 2938grid.17063.33Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Department of Psychiatry, University of Toronto, Toronto, ON Canada
| | - Benoit H. Mulsant
- 0000 0001 2157 2938grid.17063.33Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Department of Psychiatry, University of Toronto, Toronto, ON Canada
| | - Tarek K. Rajji
- 0000 0001 2157 2938grid.17063.33Temerty Centre for Therapeutic Brain Intervention, Centre for Addiction and Mental Health, University of Toronto, Toronto, ON Canada ,0000 0001 2157 2938grid.17063.33Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Department of Psychiatry, University of Toronto, Toronto, ON Canada
| | - Paul B. Fitzgerald
- Epworth Healthcare and Monash Alfred Psychiatry Research Centre, Alfred and Monash University Central Clinical School, Melbourne, VIC Australia
| | - Mera S. Barr
- 0000 0001 2157 2938grid.17063.33Temerty Centre for Therapeutic Brain Intervention, Centre for Addiction and Mental Health, University of Toronto, Toronto, ON Canada
| | - Jonathan Downar
- 0000 0001 2157 2938grid.17063.33Department of Psychiatry, University Health Network, University of Toronto, Toronto, ON Canada
| | - Willy Wong
- 0000 0001 2157 2938grid.17063.33Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON Canada
| | - Faranak Farzan
- 0000 0001 2157 2938grid.17063.33Temerty Centre for Therapeutic Brain Intervention, Centre for Addiction and Mental Health, University of Toronto, Toronto, ON Canada
| | - Zafiris J. Daskalakis
- 0000 0001 2157 2938grid.17063.33Temerty Centre for Therapeutic Brain Intervention, Centre for Addiction and Mental Health, University of Toronto, Toronto, ON Canada ,0000 0001 2157 2938grid.17063.33Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Department of Psychiatry, University of Toronto, Toronto, ON Canada
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30
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Kuang WH, Dong ZQ, Tian LT, Li J. MicroRNA-451a, microRNA-34a-5p, and microRNA-221-3p as predictors of response to antidepressant treatment. Braz J Med Biol Res 2018; 51:e7212. [PMID: 29791588 PMCID: PMC5972018 DOI: 10.1590/1414-431x20187212] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 03/13/2018] [Indexed: 02/05/2023] Open
Abstract
Aberrant expression of microRNAs (miRNAs) has been shown to be involved in early observations of depression. The aim of this study was to determine if serum levels of miRNA-451a, miRNA-34a-5p, and miRNA-221-3p can serve as indicators of disease progression or therapeutic efficacy in depression. We collected data from 84 depressed patients and 78 control volunteers recruited from the medical staff at the West China Hospital. Depression severity was rated using the 24-item Hamilton Depression Scale (HAMD). Serum miRNA-451a, miRNA-34a-5p, and miRNA-221-3p levels were determined in samples from the depressed patients before and 8 weeks after antidepressant treatment as well as in samples from controls. Compared with the controls, the patients had lower miRNA-451a levels, higher miRNA-34a-5p and miRNA-221-3p levels, and increased HAMD scores whether they underwent antidepressant treatment or not. Eight weeks after antidepressant treatment, the patients exhibited increased miRNA-451a levels, decreased miRNA-34a-5p and miRNA-221-3p levels, and reduced HAMD scores. The serum level of miRNA-451a was negatively correlated with HAMD scores of the patients, while the serum levels of miRNA-34a-5p and miRNA-221-3p were positively correlated with HAMD scores whether the patients underwent antidepressant treatment or not. Paroxetine was markedly effective in 50 patients who also displayed an increased level of miRNA-451a but reduced levels of miRNA-34a-5p and miRNA-221-3p. In contrast, paroxetine was moderately effective or ineffective in 34 patients. In conclusion, depressed patients had lower serum miRNA-451a but higher serum miRNA-34a-5p and miRNA-221-3p, and these miRNAs are potential predictors of the efficacy of antidepressants.
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Affiliation(s)
- Wei-Hong Kuang
- Department of Psychiatry and Mental Health Center, West China
Hospital, Sichuan University, Chengdu, China
| | - Zai-Quan Dong
- Department of Psychiatry and Mental Health Center, West China
Hospital, Sichuan University, Chengdu, China
| | - Lian-Tian Tian
- Research Centre for Public Health and Preventive Medicine, West
China School of Public Health, No. 4 West China Teaching Hospital, Sichuan
University, Chengdu, China
| | - Jin Li
- Department of Psychiatry and Mental Health Center, West China
Hospital, Sichuan University, Chengdu, China
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31
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Roy B, Dwivedi Y. Understanding the Neuroepigenetic Constituents of Suicide Brain. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2018; 157:233-262. [PMID: 29933952 DOI: 10.1016/bs.pmbts.2018.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Stressful life incidents often cause a predisposition for developing mental disorders such as major depressive disorder (MDD). Impaired neurocognitive and neuro-vegetative functions of the central nervous system are the hallmarks of this mental illness. Blunted responses from emotionally salient regions of the brain including cortex, hippocampus, and amygdala have been associated with MDD-related behavioral changes. Moreover, improper signal processing and neuronal atrophy were held responsible for the overall dysfunctionality of these vulnerable regions in the MDD brain. The prevalence of genetic susceptibility along with adverse environmental stimuli often makes the situation worse for MDD patients, leading to an increased risk of suicidal behavior and eventually death by suicide. Despite considerable efforts to understand the complex neurobiology associated with MDD and suicidal behavior, their pathological determinants remain mostly elusive. Recent research, however, has shown that epigenetic perturbations have a formidable impact on the etiopathogenesis of MDD. Understanding the neuroepigenetic nature of this mental disorder may provide opportunities to devise more effective treatment strategies. Moreover, this can potentially lead to identifying predictive biomarkers associated with suicide risk. The present chapter critically reviews studies pertaining to epigenetic signatures of MDD and suicide brain.
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Affiliation(s)
- Bhaskar Roy
- University of Alabama at Birmingham, Birmingham, AL, United States
| | - Yogesh Dwivedi
- University of Alabama at Birmingham, Birmingham, AL, United States.
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32
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Sonal A, Raghavan V. Brain derived neurotrophic factor (BDNF) and suicidal behavior: A review of studies from Asian countries. Asian J Psychiatr 2018. [PMID: 29525506 DOI: 10.1016/j.ajp.2018.03.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The biological basis of suicide and suicidal behavior is actively researched. Recently, the role of Brain Derived Neurotropic Factor (BDNF) in suicidal behavior has gained attention and significant results are observed. In this review, we aimed to focus on the studies from Asian countries that have explored the role of BDNF and suicidal behavior. The review highlights the findings from these studies and discusses the possible avenues that should be explored in future studies from Asian countries to understand more on suicidal behavior and possible prevention.
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Affiliation(s)
- Akanksha Sonal
- Department of Geriatric Psychiatry, King George Medical University, Lucknow, Uttar Pradesh, India
| | - Vijaya Raghavan
- Schizophrenia Research Foundation, R/7A, North Main Road, Anna Nagar West Extension, Chennai, Tamil Nadu, 600101, India.
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33
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Youssef MM, Underwood MD, Huang YY, Hsiung SC, Liu Y, Simpson NR, Bakalian MJ, Rosoklija GB, Dwork AJ, Arango V, Mann JJ. Association of BDNF Val66Met Polymorphism and Brain BDNF Levels with Major Depression and Suicide. Int J Neuropsychopharmacol 2018; 21:528-538. [PMID: 29432620 PMCID: PMC6007393 DOI: 10.1093/ijnp/pyy008] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 01/22/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Brain-derived neurotrophic factor is implicated in the pathophysiology of major depressive disorder and suicide. Both are partly caused by early life adversity, which reduces brain-derived neurotrophic factor protein levels. This study examines the association of brain-derived neurotrophic factor Val66Met polymorphism and brain brain-derived neurotrophic factor levels with depression and suicide. We hypothesized that both major depressive disorder and early life adversity would be associated with the Met allele and lower brain brain-derived neurotrophic factor levels. Such an association would be consistent with low brain-derived neurotrophic factor mediating the effect of early life adversity on adulthood suicide and major depressive disorder. METHODS Brain-derived neurotrophic factor Val66Met polymorphism was genotyped in postmortem brains of 37 suicide decedents and 53 nonsuicides. Additionally, brain-derived neurotrophic factor protein levels were determined by Western blot in dorsolateral prefrontal cortex (Brodmann area 9), anterior cingulate cortex (Brodmann area 24), caudal brainstem, and rostral brainstem. The relationships between these measures and major depressive disorder, death by suicide, and reported early life adversity were examined. RESULTS Subjects with the Met allele had an increased risk for depression. Depressed patients also have lower brain-derived neurotrophic factor levels in anterior cingulate cortex and caudal brainstem compared with nondepressed subjects. No effect of history of suicide death or early life adversity was observed with genotype, but lower brain-derived neurotrophic factor levels in the anterior cingulate cortex were found in subjects who had been exposed to early life adversity and/or died by suicide compared with nonsuicide decedents and no reported early life adversity. CONCLUSIONS This study provides further evidence implicating low brain brain-derived neurotrophic factor and the brain-derived neurotrophic factor Met allele in major depression risk. Future studies should seek to determine how altered brain-derived neurotrophic factor expression contributes to depression and suicide.
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Affiliation(s)
- Mariam M Youssef
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York
| | - Mark D Underwood
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York,Department of Psychiatry, Columbia University, New York, New York,Correspondence: Mark D. Underwood, PhD, 1051 Riverside Dr., Unit 42, New York, NY 10032 ()
| | - Yung-Yu Huang
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York
| | - Shu-chi Hsiung
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York
| | - Yan Liu
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York
| | - Norman R Simpson
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York
| | - Mihran J Bakalian
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York
| | - Gorazd B Rosoklija
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York,Macedonian Academy of Sciences & Arts, Republic of Macedonia
| | - Andrew J Dwork
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York,Department of Psychiatry, Columbia University, New York, New York,Department of Pathology and Cell Biology, Columbia University, New York, New York
| | - Victoria Arango
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York,Department of Psychiatry, Columbia University, New York, New York
| | - J John Mann
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, New York,Department of Psychiatry, Columbia University, New York, New York,Department of Radiology, Columbia University, New York, New York
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Ragguett RM, Cha DS, Subramaniapillai M, Carmona NE, Lee Y, Yuan D, Rong C, McIntyre RS. Air pollution, aeroallergens and suicidality: a review of the effects of air pollution and aeroallergens on suicidal behavior and an exploration of possible mechanisms. REVIEWS ON ENVIRONMENTAL HEALTH 2017; 32:343-359. [PMID: 28915125 DOI: 10.1515/reveh-2017-0011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 08/01/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE Risk factors for suicide can be broadly categorized as sociodemographic, clinical and treatment. There is interest in environmental risk and protection factors for suicide. Emerging evidence suggests a link between environmental factors in the form of air pollution and aeroallergens in relation to suicidality. METHODS Herein, we conducted a systematic review of 15 articles which have met inclusion criteria on the aforementioned effects. RESULTS The majority of the reviewed articles reported an increased suicide risk alongside increased air pollutants or aeroallergens (i.e. pollen) increase; however, not all environmental factors were explored equally. In specific, studies that were delimited to evaluating particulate matter (PM) reported a consistent association with suicidality. We also provide a brief description of putative mechanisms (e.g. inflammation and neurotransmitter dysregulation) that may mediate the association between air pollution, aeroallergens and suicidality. CONCLUSION Available evidence suggests that exposure to harmful air quality may be associated with suicidality. There are significant public health implications which are amplified in regions and countries with greater levels of air pollution and aeroallergens. In addition, those with atopic sensitivity may represent a specific subgroup that is at risk.
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Lutz PE, Mechawar N, Turecki G. Neuropathology of suicide: recent findings and future directions. Mol Psychiatry 2017; 22:1395-1412. [PMID: 28696430 DOI: 10.1038/mp.2017.141] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 05/21/2017] [Accepted: 05/26/2017] [Indexed: 12/11/2022]
Abstract
Suicide is a major public health concern and a leading cause of death in most societies. Suicidal behaviour is complex and heterogeneous, likely resulting from several causes. It associates with multiple factors, including psychopathology, personality traits, early-life adversity and stressful life events, among others. Over the past decades, studies in fields ranging from neuroanatomy, genetics and molecular psychiatry have led to a model whereby behavioural dysregulation, including suicidal behaviour (SB), develops as a function of biological adaptations in key brain systems. More recently, the unravelling of the unique epigenetic processes that occur in the brain has opened promising avenues in suicide research. The present review explores the various facets of the current knowledge on suicidality and discusses how the rapidly evolving field of neurobehavioural epigenetics may fuel our ability to understand, and potentially prevent, SB.
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Affiliation(s)
- P-E Lutz
- McGill Group for Suicide Studies, McGill University, Douglas Mental Health University Institute, Montreal, QC, Canada
| | - N Mechawar
- McGill Group for Suicide Studies, McGill University, Douglas Mental Health University Institute, Montreal, QC, Canada.,Department of Psychiatry, McGill University, Douglas Mental Health University Institute, Montreal, QC, Canada
| | - G Turecki
- McGill Group for Suicide Studies, McGill University, Douglas Mental Health University Institute, Montreal, QC, Canada.,Department of Psychiatry, McGill University, Douglas Mental Health University Institute, Montreal, QC, Canada
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Kumar A, Pareek V, Faiq MA, Kumar P, Raza K, Prasoon P, Dantham S, Mochan S. Regulatory role of NGFs in neurocognitive functions. Rev Neurosci 2017; 28:649-673. [DOI: 10.1515/revneuro-2016-0031] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 01/25/2017] [Indexed: 12/16/2022]
Abstract
AbstractNerve growth factors (NGFs), especially the prototype NGF and brain-derived neurotrophic factor (BDNF), have a diverse array of functions in the central nervous system through their peculiar set of receptors and intricate signaling. They are implicated not only in the development of the nervous system but also in regulation of neurocognitive functions like learning, memory, synaptic transmission, and plasticity. Evidence even suggests their role in continued neurogenesis and experience-dependent neural network remodeling in adult brain. They have also been associated extensively with brain disorders characterized by neurocognitive dysfunction. In the present article, we aimed to make an exhaustive review of literature to get a comprehensive view on the role of NGFs in neurocognitive functions in health and disease. Starting with historical perspective, distribution in adult brain, implied molecular mechanisms, and developmental basis, this article further provides a detailed account of NGFs’ role in specified neurocognitive functions. Furthermore, it discusses plausible NGF-based homeostatic and adaptation mechanisms operating in the pathogenesis of neurocognitive disorders and has presents a survey of such disorders. Finally, it elaborates on current evidence and future possibilities in therapeutic applications of NGFs with an emphasis on recent research updates in drug delivery mechanisms. Conclusive remarks of the article make a strong case for plausible role of NGFs in comprehensive regulation of the neurocognitive functions and pathogenesis of related disorders and advocate that future research should be directed to explore use of NGF-based mechanisms in the prevention of implicated diseases as well as to target these molecules pharmacologically.
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Affiliation(s)
- Ashutosh Kumar
- Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
- Department of Anatomy, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Karaikal, Puducherry 609602, India
| | - Vikas Pareek
- Computational Neuroscience and Neuroimaging Division, National Brain Research Centre (NBRC), Manesar, Haryana 122051, India
| | - Muneeb A. Faiq
- Department of Ophthalmology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Pavan Kumar
- Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Khursheed Raza
- Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Pranav Prasoon
- Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Subrahamanyam Dantham
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Sankat Mochan
- Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
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Johnston JAY, Wang F, Liu J, Blond BN, Wallace A, Liu J, Spencer L, Cox Lippard ET, Purves KL, Landeros-Weisenberger A, Hermes E, Pittman B, Zhang S, King R, Martin A, Oquendo MA, Blumberg HP. Multimodal Neuroimaging of Frontolimbic Structure and Function Associated With Suicide Attempts in Adolescents and Young Adults With Bipolar Disorder. Am J Psychiatry 2017; 174:667-675. [PMID: 28135845 PMCID: PMC5939580 DOI: 10.1176/appi.ajp.2016.15050652] [Citation(s) in RCA: 150] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Bipolar disorder is associated with high risk for suicidal behavior that often develops in adolescence and young adulthood. Elucidation of involved neural systems is critical for prevention. This study of adolescents and young adults with bipolar disorder with and without a history of suicide attempts combines structural, diffusion tensor, and functional MR imaging methods to investigate implicated abnormalities in the morphology and structural and functional connectivity within frontolimbic systems. METHOD The study had 26 participants with bipolar disorder who had a prior suicide attempt (the attempter group) and 42 participants with bipolar disorder without a suicide attempt (the nonattempter group). Regional gray matter volume, white matter integrity, and functional connectivity during processing of emotional stimuli were compared between groups, and differences were explored for relationships between imaging modalities and associations with suicide-related symptoms and behaviors. RESULTS Compared with the nonattempter group, the attempter group showed significant reductions in gray matter volume in the orbitofrontal cortex, hippocampus, and cerebellum; white matter integrity in the uncinate fasciculus, ventral frontal, and right cerebellum regions; and amygdala functional connectivity to the left ventral and right rostral prefrontal cortex. In exploratory analyses, among attempters, there was a significant negative correlation between right rostral prefrontal connectivity and suicidal ideation and between left ventral prefrontal connectivity and attempt lethality. CONCLUSIONS Adolescent and young adult suicide attempters with bipolar disorder demonstrate less gray matter volume and decreased structural and functional connectivity in a ventral frontolimbic neural system subserving emotion regulation. Among attempters, reductions in amygdala-prefrontal functional connectivity may be associated with severity of suicidal ideation and attempt lethality.
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Affiliation(s)
| | - Fei Wang
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US
| | - Jie Liu
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US
| | - Benjamin N. Blond
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US
| | - Amanda Wallace
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US
| | - Jiacheng Liu
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US
| | - Linda Spencer
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US
| | | | - Kirstin L. Purves
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US,Division of Psychology and Language Sciences, University College London, London, UK
| | - Angeli Landeros-Weisenberger
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US,Child Study Center, Yale School of Medicine, New Haven, CT, USA
| | - Eric Hermes
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US
| | - Brian Pittman
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US
| | - Sheng Zhang
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US
| | - Robert King
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US,Child Study Center, Yale School of Medicine, New Haven, CT, USA
| | - Andrés Martin
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US,Child Study Center, Yale School of Medicine, New Haven, CT, USA
| | - Maria A. Oquendo
- Department of Psychiatry, Columbia University, New York, NY, USA
| | - Hilary P. Blumberg
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, US,Child Study Center, Yale School of Medicine, New Haven, CT, USA
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Ludwig B, Roy B, Wang Q, Birur B, Dwivedi Y. The Life Span Model of Suicide and Its Neurobiological Foundation. Front Neurosci 2017; 11:74. [PMID: 28261051 PMCID: PMC5306400 DOI: 10.3389/fnins.2017.00074] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 01/31/2017] [Indexed: 01/19/2023] Open
Abstract
The very incomprehensibility of the suicidal act has been occupying the minds of researchers and health professionals for a long time. Several theories of suicide have been proposed since the beginning of the past century, and a myriad of neurobiological studies have been conducted over the past two decades in order to elucidate its pathophysiology. Both neurobiology and psychological theories tend to work in parallel lines that need behavioral and empirical data respectively, to confirm their hypotheses. In this review, we are proposing a "Life Span Model of Suicide" with an attempt to integrate the "Stress-Diathesis Model" and the "Interpersonal Model of Suicide" into a neurobiological narrative and support it by providing a thorough compilation of related genetic, epigenetic, and gene expression findings. This proposed model comprises three layers, forming the capability of suicide: genetic factors as the predisposing Diathesis on one side and Stress, characterized by epigenetic marks on the other side, and in between gene expression and gene function which are thought to be influenced by Diathesis and Stress components. The empirical evidence of this model is yet to be confirmed and further research, specifically epigenetic studies in particular, are needed to support the presence of a life-long, evolving capability of suicide and identify its neurobiological correlates.
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Affiliation(s)
| | | | | | | | - Yogesh Dwivedi
- UAB Mood Disorder Program, Department of Psychiatry and Behavioral Neurobiology, University of Alabama at BirminghamBirmingham, AL, USA
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Ambrus L, Sunnqvist C, Ekman R, Träskman-Bendz L, Westrin Å. Plasma Brain-Derived Neurotrophic Factor and Psychopathology in Attempted Suicide. Neuropsychobiology 2017; 73:241-8. [PMID: 27327436 DOI: 10.1159/000446286] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 04/19/2016] [Indexed: 11/19/2022]
Abstract
BACKGROUND/AIMS Increasing evidence suggests a link between brain-derived neurotrophic factor (BDNF) and suicidal behaviour (SB). Furthermore, decreased peripheral BDNF levels have been associated with clinical symptoms in various psychiatric disorders as well as with personality dimensions in healthy individuals. However, the relationship between BDNF and psychopathology is poorly investigated regarding SB. METHODS Plasma BDNF concentrations were analysed in 61 recent suicide attempters. Clinical symptoms were evaluated using the Comprehensive Psychopathological Rating Scale. Personality dimensions were assessed using the Marke-Nyman Temperament Scale. RESULTS Plasma BDNF correlated positively and significantly with the personality dimension Solidity but not with the other personality dimensions or with clinical symptoms. CONCLUSION BDNF plays an important role in the regulation of neuroplasticity and neurogenesis in humans. Our results indicate that lower BDNF concentrations are associated with higher levels of impulsiveness and changeability (low scores on the Solidity scale). Furthermore, low plasma BDNF levels may be proposed as a trait marker rather than a state marker for attempted suicide.
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Affiliation(s)
- Livia Ambrus
- Psychiatry Unit, Department of Clinical Sciences, Lund University, Lund, Sweden
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Salles FHM, Soares PSM, Wiener CD, Mondin TC, da Silva PM, Jansen K, de Mattos Souza LD, da Silva RA, Oses JP. Mental disorders, functional impairment, and nerve growth factor. Psychol Res Behav Manag 2016; 10:9-15. [PMID: 28053561 PMCID: PMC5189700 DOI: 10.2147/prbm.s104814] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Nerve growth factor (NGF) is an important member of the neurotrophin family and its alteration has been associated with psychiatric disorders. Functionality consists of the activities that an individual can perform, as well as their social participation, which is an important factor in analyzing the carrier living conditions of subjects with psychiatric suffering. Several studies have evaluated functionality in bipolar disorder; however, no studies have evaluated the functionality in other mental disorders. There are also few studies investigating the association between functionality and the biological bases of mental disorders. This study aimed to evaluate the serum NGF levels in psychiatric patients and to verify a possible association between the serum neurotrophic levels and functionality. This was a cross-sectional study with a convenient sample obtained from the Public Mental Health Service from the south of Brazil. The final sample was composed of 286 patients enrolled from July 2013 to October 2014. Data was collected using a sociodemographic questionnaire, and the diagnosis was confirmed using the Mini International Neuropsychiatric Interview (M.I.N.I) and a Functioning Assessment Short Test. The serum NGF levels were determined using the enzyme-linked immunosorbent assay method. Statistical analyses were performed using IBM SPSS Statistic 21.0 software. NGF serum levels were increased significantly in patients with obsessive-compulsive disorder compared with patients with no obsessive-compulsive disorder (P=0.015). An increase in serum NGF levels in generalized anxiety disorder patients was observed compared with patients with no generalized anxiety disorder (P=0.047). NGF was negatively associated with autonomy (P=0.024, r=-0.136), work (P=0.040, r=-0.124), and cognition (P=0.024, r=-0.137), thereby showing that changes in serum levels of NGF are associated with functionality in mental disorders.
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Affiliation(s)
- Fanny Helena Martins Salles
- Translational Science on Brain Disorders, Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Pedro San Martin Soares
- Translational Science on Brain Disorders, Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Carolina David Wiener
- Translational Science on Brain Disorders, Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Thaise Campos Mondin
- Translational Science on Brain Disorders, Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Paula Moraes da Silva
- Translational Science on Brain Disorders, Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Karen Jansen
- Translational Science on Brain Disorders, Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Rio Grande do Sul, Brazil; Translational Psychiatry Program; Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston (UTHealth) Medical School, Houston, TX, USA
| | - Luciano Dias de Mattos Souza
- Translational Science on Brain Disorders, Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Ricardo Azevedo da Silva
- Translational Science on Brain Disorders, Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Jean Pierre Oses
- Translational Science on Brain Disorders, Department of Health and Behavior, Catholic University of Pelotas, Pelotas, Rio Grande do Sul, Brazil; Translational Psychiatry Program; Center of Excellence on Mood Disorders, Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston (UTHealth) Medical School, Houston, TX, USA
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Pawlak J, Dmitrzak-Weglarz M, Wilkosc M, Szczepankiewicz A, Leszczynska-Rodziewicz A, Zaremba D, Kapelski P, Rajewska-Rager A, Hauser J. Suicide behavior as a quantitative trait and its genetic background. J Affect Disord 2016; 206:241-250. [PMID: 27479537 DOI: 10.1016/j.jad.2016.07.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 07/06/2016] [Accepted: 07/16/2016] [Indexed: 01/14/2023]
Abstract
INTRODUCTION Studies have not given yet a clear answer what is the genetic background of suicidal predisposition. The associations between polymorphisms of the TPH1 and 5-HTTLPR genes and violent suicidal behavior was revealed with the least inconsistencies. METHOD We selected 10 "strong candidate genes" and 35 SNPs, SLC6A4 and ACP1 for replication study. We searched associations between precisely described suicidal phenotype in 825 affective patients and polymorphisms of selected neurobiological pathways genes as well as their interactions that constitute suicidal risk. RESULTS The results confirm the role of TPH1, TPH2, 5HT2A, CRHR1 and ACP1 variants in the risk of suicidal behavior. LIMITATIONS In our study we analyzed limited number of candidate genes and only one of them is linked to lithium mechanism of action. We had no data on pharmacological treatment of investigated patients and its relation to the time of suicide attempt. CONCLUSION Our results indicate that polymorphisms of various signaling pathways are involved in the pathogenesis of suicidal behavior. Non-genetic factors are also involved in the risk of suicidal attempts.
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Affiliation(s)
- Joanna Pawlak
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Poland.
| | - Monika Dmitrzak-Weglarz
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Poland
| | - Monika Wilkosc
- Department of Individual Differences, Institute of Psychology, University of Bydgoszcz, Poland
| | - Aleksandra Szczepankiewicz
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Poland; Department of Pediatrics, Laboratory of Molecular and Cell Biology, Poznan University of Medical Sciences, Poland
| | | | - Dorota Zaremba
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Poland
| | - Pawel Kapelski
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Poland
| | | | - Joanna Hauser
- Psychiatric Genetics Unit, Department of Psychiatry, Poznan University of Medical Sciences, Poland
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Understanding epigenetic architecture of suicide neurobiology: A critical perspective. Neurosci Biobehav Rev 2016; 72:10-27. [PMID: 27836463 DOI: 10.1016/j.neubiorev.2016.10.031] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 09/26/2016] [Accepted: 10/31/2016] [Indexed: 12/29/2022]
Abstract
Current understanding of environmental cross-talk with genetic makeup is found to be mediated through an epigenetic interface which is associated with prominent reversible and heritable changes at gene expression level. Recent emergence of epigenetic modulation in shaping the genetic information has become a key regulatory factor in answering the underlying complexities associated with several mental disorders. A comprehensive understanding of the pertinent changes in the epigenetic makeup of suicide phenotype exhibits a characteristic signature with the possibility of using it as a biomarker to help predict the risk factors associated with suicide. Within the scope of this current review, the most sought after epigenetic changes of DNA methylation and histone modification are thoroughly scrutinized to understand their close functional association with the broad spectrum of suicide phenotype.
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Ambrus L, Lindqvist D, Träskman-Bendz L, Westrin Å. Hypothalamic-pituitary-adrenal axis hyperactivity is associated with decreased brain-derived neurotrophic factor in female suicide attempters. Nord J Psychiatry 2016; 70:575-81. [PMID: 27216156 DOI: 10.1080/08039488.2016.1184310] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Both decreased levels of brain-derived neurotrophic factor (BDNF) and hypothalamic-pituitary-adrenal (HPA) axis dysregulation may be involved in the pathophysiology of suicidal behaviour, as well as cognitive symptoms of depression. Pre-clinical and clinical studies have shown interactions between HPA-axis activity and BDNF, but this has not been studied in a clinical cohort of suicidal subjects. The purpose of this study was, therefore, to investigate associations between HPA-axis activity and BDNF in suicide attempters. Furthermore, this study examined the relationship between the HPA-axis, BDNF, and cognitive symptoms in suicidal patients. Since previous data indicate gender-related differences in BDNF and the HPA axis, males and females were examined separately. METHOD Seventy-five recent suicide attempters (n = 41 females; n = 34 males) were enrolled in the study. The Dexamethasone Suppression Test (DST) was performed and BDNF in plasma were analysed. Patients were evaluated with the Comprehensive Psychopathological Rating Scale (CPRS) from which items 'Concentration difficulties' and 'Failing memory' were extracted. RESULTS Only among females, DST non-suppressors had significantly lower BDNF compared to DST suppressors (p = 0.022), and there was a significant correlation between post-DST serum cortisol at 8 a.m. and BDNF (rs = -0.437, p = 0.003). Concentration difficulties correlated significantly with post-DST cortisol in all patients (rs = 0.256, p = 0.035), in females (rs = 0.396, p = 0.015), and with BDNF in females (rs = -0.372, p = 0.020). CONCLUSION The findings suggest an inverse relationship between the HPA-axis and BDNF in female suicide attempters. Moreover, concentration difficulties may be associated with low BDNF and DST non-suppression in female suicide attempters.
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Affiliation(s)
- Livia Ambrus
- a Department of Clinical Sciences, Psychiatry , Lund University , Lund , Sweden
| | - Daniel Lindqvist
- a Department of Clinical Sciences, Psychiatry , Lund University , Lund , Sweden
| | - Lil Träskman-Bendz
- a Department of Clinical Sciences, Psychiatry , Lund University , Lund , Sweden
| | - Åsa Westrin
- a Department of Clinical Sciences, Psychiatry , Lund University , Lund , Sweden
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Shrivastava A, De Sousa A, Rao GP. Brain-Derived Neurotrophic Factor and Suicide in Schizophrenia: Critical Role of Neuroprotective Mechanisms as an Emerging Hypothesis. Indian J Psychol Med 2016; 38:499-504. [PMID: 28031582 PMCID: PMC5178030 DOI: 10.4103/0253-7176.194913] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Suicide is a common occurrence in psychiatric disorders and is a cause of increased healthcare utilization worldwide. Schizophrenia is one of the most common psychiatric disorders worldwide and posited to be seen in 1% of the population worldwide. Suicide is a common occurrence in schizophrenia with 25%-30% patients with schizophrenia attempting suicide and 8%-10% completing it. There is a need for valid biological markers to help clinicians identify patients with schizophrenia that may be at a risk of suicide and thus help in them receiving better care and interventions at the earliest even before a suicide attempt occurring. There are clear neurobiological changes at a genetic, neuroimaging, and neurochemical level that occurs in patients with schizophrenia that attempt suicide. There is a new theory that postulates neuronal plasticity and neuroprotection to have a role in the biological changes that ensue when suicidal thoughts and feelings occur in patients with schizophrenia. Neurotrophic growth factors like brain-derived neurotrophic factor (BDNF) have been documented to play a role in the protection of neurons and in the prevention of neurobiological changes that may lead to suicide both in schizophrenia and depression. The present paper presents a commentary that looks at the role of BDNF as a protective factor and neurobiological marker for suicide in schizophrenia.
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Affiliation(s)
- Amresh Shrivastava
- Department of Psychiatry, Parkwood Institute of Mental Health Care and Associate Scientist, Lawson Health Research Institute, London, Ontario, Canada
| | - Avinash De Sousa
- Department of Psychiatry, Lokmanya Tilak Municipal Medical College, Mumbai, Maharashtra, India
| | - G Prasad Rao
- Department of Psychiatry, Asha Hospital, Hyderabad, Telangana, India
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Pulay AJ, Réthelyi JM. Multimarker analysis suggests the involvement of BDNF signaling and microRNA biosynthesis in suicidal behavior. Am J Med Genet B Neuropsychiatr Genet 2016; 171:763-76. [PMID: 26921221 DOI: 10.1002/ajmg.b.32433] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 02/04/2016] [Indexed: 12/22/2022]
Abstract
Despite moderate heritability estimates the genetics of suicidal behavior remains unclear, genome-wide association and candidate gene studies focusing on single nucleotide associations reported inconsistent findings. Our study explored biologically informed, multimarker candidate gene associations with suicidal behavior in mood disorders. We analyzed the GAIN Whole Genome Association Study of Bipolar Disorder version 3 (n = 999, suicidal n = 358) and the GAIN Major Depression: Stage 1 Genomewide Association in Population-Based Samples (n = 1,753, suicidal n = 245) datasets. Suicidal behavior was defined as severe suicidal ideation or attempt. Candidate genes were selected based on literature search (Geneset1, n = 35), gene expression data of microRNA genes, (Geneset2, n = 68) and their target genes (Geneset3, n = 11,259). Quality control, dosage analyses were carried out with PLINK. Gene-based associations of Geneset1 were analyzed with KGG. Polygenic profile scores of suicidal behavior were computed in the major depression dataset both with PRSice and LDpred and validated in the bipolar disorder data. Several nominally significant gene-based associations were detected, but only DICER1 associated with suicidal behavior in both samples, while only the associations of NTRK2 in the depression sample reached family wise and experiment wise significance. Polygenic profile scores negatively predicted suicidal behavior in the bipolar sample for only Geneset2, with the strongest prediction by PRSice at Pt < 0.03 (Nagelkerke R(2) = 0.01, P < 0.007). Gene-based association results confirmed the potential involvement of the BDNF-NTRK2-CREB pathway in the pathogenesis of suicide and the cross-disorder association of DICER1. Polygenic risk prediction of the selected miRNA genes indicates that the miRNA system may play a mediating role, but with considerable pleiotropy. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Attila J Pulay
- Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary
| | - János M Réthelyi
- Department of Psychiatry and Psychotherapy, Semmelweis University, Budapest, Hungary.,Molecular Psychiatry Research Group, MTA-SE NAP-B, Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
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Clinical and genetic factors associated with suicide in mood disorder patients. Eur Arch Psychiatry Clin Neurosci 2016; 266:181-93. [PMID: 26626456 DOI: 10.1007/s00406-015-0658-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 11/17/2015] [Indexed: 12/14/2022]
Abstract
Suicidality is a continuum ranging from ideation to attempted and completed suicide, with a complex etiology involving both genetic heritability and environmental factors. The majority of suicide events occur in the context of psychiatric conditions, preeminently major depression and bipolar disorder. The present study investigates clinical factors associated with suicide in a sample of 553 mood disorder patients, recruited within the 'Psy Pluriel' center, Centre Européen de Psychologie Médicale, and the Department of Psychiatry of Erasme Hospital (Brussels). Furthermore, genetic association analyses examining polymorphisms within COMT, BDNF, MAPK1 and CREB1 genes were performed in a subsample of 259 bipolar patients. The presence or absence of a previous suicide attempt and of current suicide risk were assessed. A positive association with suicide attempt was reported for younger patients, females, lower educated, smokers, those with higher scores on depressive symptoms and higher functional disability and those with anxiety comorbidity and familial history of suicidality in first- and second-degree relatives. Anxiety disorder comorbidity was the stronger predictor of current suicide risk. No associations were found with polymorphisms within COMT and BDNF genes, whereas significant associations were found with variations in rs13515 (MAPK1) and rs6740584 (CREB1) polymorphisms. From a clinical perspective, our study proposes several clinical characteristics, such as increased depressive symptomatology, anxiety comorbidity, functional disability and family history of suicidality, as correlates associated with suicide. Genetic risk variants in MAPK1 and CREB1 genes might be involved in a dysregulation of inflammatory and neuroplasticity pathways and are worthy of future investigation.
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Keil MF, Briassoulis G, Stratakis CA, Wu TJ. Protein Kinase A and Anxiety-Related Behaviors: A Mini-Review. Front Endocrinol (Lausanne) 2016; 7:83. [PMID: 27445986 PMCID: PMC4925668 DOI: 10.3389/fendo.2016.00083] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 06/20/2016] [Indexed: 01/13/2023] Open
Abstract
This review focuses on the anxiety related to cyclic AMP/protein kinase A (PKA) signaling pathway that regulates stress responses. PKA regulates an array of diverse signals that interact with various neurotransmitter systems associated with alertness, mood, and acute and social anxiety-like states. Recent mouse studies support the involvement of the PKA pathway in common neuropsychiatric disorders characterized by heightened activation of the amygdala. The amygdala is critical for adaptive responses leading to fear learning and aberrant fear memory and its heightened activation is widely thought to underpin various anxiety disorders. Stress-induced plasticity within the amygdala is involved in the transition from normal vigilance responses to emotional reactivity, fear over-generalization, and deficits in fear inhibition resulting in pathological anxiety and conditions, such as panic and depression. Human studies of PKA signaling defects also report an increased incidence of psychiatric disorders, including anxiety, depression, bipolar disorder, learning disorders, and attention deficit hyperactivity disorder. We speculate that the PKA system is uniquely suited for selective, molecularly targeted intervention that may be proven effective in anxiolytic therapy.
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Affiliation(s)
- Margaret F. Keil
- Section on Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, USA
- *Correspondence: Margaret F. Keil, ; T. John Wu,
| | - George Briassoulis
- Section on Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, USA
- Department of Pediatric Intensive Care, University of Crete, Heraklion, Greece
| | - Constantine A. Stratakis
- Section on Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, USA
| | - T. John Wu
- Department of Obstetrics and Gynecology, Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
- *Correspondence: Margaret F. Keil, ; T. John Wu,
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Pazini FL, Cunha MP, Rosa JM, Colla ARS, Lieberknecht V, Oliveira Á, Rodrigues ALS. Creatine, Similar to Ketamine, Counteracts Depressive-Like Behavior Induced by Corticosterone via PI3K/Akt/mTOR Pathway. Mol Neurobiol 2015; 53:6818-6834. [PMID: 26660117 DOI: 10.1007/s12035-015-9580-9] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 11/29/2015] [Indexed: 12/15/2022]
Abstract
Ketamine has emerged as a novel strategy to treat refractory depression, producing rapid remission, but elicits some side effects that limit its use. In an attempt to investigate a safer compound that may afford an antidepressant effect similar to ketamine, this study examined the effects of the ergogenic compound creatine in a model of depression, and the involvement of phosphatidylinositol-3-kinase/protein kinase B/mammalian target of rapamycin (PI3K/Akt/mTOR) pathway in its effect. In order to induce a depressive-like behavior, mice were administered with corticosterone (20 mg/kg, per os (p.o.)) for 21 days. This treatment increased immobility time in the tail suspension test (TST), an effect abolished by a single administration of creatine (10 mg/kg, p.o.) or ketamine (1 mg/kg, i.p.), but not by fluoxetine (10 mg/kg, p.o., conventional antidepressant). Treatment of mice with wortmannin (PI3K inhibitor, 0.1 μg/site, intracerebroventricular (i.c.v.)) or rapamycin (mTOR inhibitor, 0.2 nmol/site, i.c.v.) abolished the anti-immobility effect of creatine and ketamine. None of the treatments affected locomotor activity of mice. The immunocontents of p-mTOR, p-p70S6 kinase (p70S6K), and postsynaptic density-95 protein (PSD95) were increased by creatine and ketamine in corticosterone or vehicle-treated mice. Moreover, corticosterone-treated mice presented a decreased hippocampal brain-derived neurotrophic factor (BDNF) level, an effect abolished by creatine or ketamine. Altogether, the results indicate that creatine shares with ketamine the ability to acutely reverse the corticosterone-induced depressive-like behavior by a mechanism dependent on PI3K/AKT/mTOR pathway, and modulation of the synaptic protein PSD95 as well as BDNF in the hippocampus, indicating the relevance of targeting these proteins for the management of depressive disorders. Moreover, we suggest that creatine should be further investigated as a possible fast-acting antidepressant.
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Affiliation(s)
- Francis L Pazini
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Mauricio P Cunha
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Julia M Rosa
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - André R S Colla
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Vicente Lieberknecht
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Ágatha Oliveira
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Ana Lúcia S Rodrigues
- Department of Biochemistry, Center of Biological Sciences, Universidade Federal de Santa Catarina, Campus Universitário, Trindade, Florianópolis, Santa Catarina, 88040-900, Brazil.
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Pasi S, Singh PK, Pandey RK, Dikshit PC, Jiloha RC, Rao VR. Evaluation of psychiatric and genetic risk factors among primary relatives of suicide completers in Delhi NCR region, India. Psychiatry Res 2015. [PMID: 26205629 DOI: 10.1016/j.psychres.2015.07.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Suicide as a public health problem is studied worldwide and association of psychiatric and genetic risk factors for suicidal behavior are the point of discussion in studies across different ethnic groups. The present study is aimed at evaluating psychiatric and genetic traits among primary relatives of suicide completer families in an urban Indian population. Bi-variate analysis shows significant increase in major depression (PHQ and Hamilton), stress, panic disorder, somatoform disorder and suicide attemptamong primary compared to other relatives. Sib pair correlations also reveal significant results for major depression (Hamilton), stress, suicide attempt, intensity of suicide ideation and other anxiety syndrome. 5-HTTLPR, 5-HTT (Stin2) and COMT risk alleles are higher among primary relatives, though statistically insignificant. Backward conditional logistic regression analysis show only independent variable, Depression (Hamilton) made a unique statistically significant contribution to the model in primary relatives.
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Affiliation(s)
- Shivani Pasi
- Department of Anthropology, University of Delhi, Delhi, India
| | | | | | - P C Dikshit
- Department of Forensic Medicine, Moulana Azad Medical College, Delhi, India; Department of Forensic Medicine and Toxicology, Jamia Hamdard Institute of Medical Sciences & Research, New Delhi, India
| | - R C Jiloha
- Department of Psychiatry, G.B. Pant Hospital, Delhi, India
| | - V R Rao
- Department of Anthropology, University of Delhi, Delhi, India.
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Fawzy RM, Eldin MS, Mouhammed AM, El-shiekh HE. Serum level of brain-derived neurotrophic factor in fibromyalgia. EGYPTIAN RHEUMATOLOGY AND REHABILITATION 2015. [DOI: 10.4103/1110-161x.168156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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