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Abdu Z, Hajure M, Desalegn D. Suicidal Behavior and Associated Factors Among Students in Mettu University, South West Ethiopia, 2019: An Institutional Based Cross-Sectional Study. Psychol Res Behav Manag 2020; 13:233-243. [PMID: 32184684 PMCID: PMC7061437 DOI: 10.2147/prbm.s240827] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 02/18/2020] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Suicidal behavior is a leading cause of injury and death worldwide. It is a public health issue that is estimated to contribute more than 2.4% to the global burden of disease by the year 2020. University and college students are among groups affected more than the general population. However, there is a scarcity of studies on the magnitude and associated factors of suicidal behavior among University students in Ethiopia, particularly in Mettu University. Therefore, we assessed the prevalence of suicidal behavior and associated factors among Mettu University students. METHODS Institution-based multistage stratified cross-sectional study design was conducted among 523 regular main campus students of Mettu University. The Suicidal Behaviors Questionnaire Revised (SBQ-R) was used to screen the presence of suicidal behavior symptoms. Data analysis was done using SPSS version 20. RESULTS Lifetime prevalence of suicidal ideation, plan, and attempt was 58.3%, 37.3%, and 4.4%, respectively, with one-year prevalence of suicidal ideation at 34%. The multivariate logistic regression analysis revealed that the odds of suicidal ideation were higher among female gender, students who had poor social support, family history of suicide attempt, lifetime alcohol use, rural residence, and less frequently engaging in religious practice; these factors were significantly associated with suicidality. CONCLUSION Nearly one-fourth of respondents report suicidal behavior. Prevalence of suicide was found to be higher. Prevention and coping actions regarding identified factors to reduce burden of suicide are needed.
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Affiliation(s)
- Zakir Abdu
- Department of Psychiatry, Faculty of Health and Medical Sciences, Mettu University, Mettu, Ethiopia
| | - Mohammedamin Hajure
- Department of Psychiatry, Faculty of Health and Medical Sciences, Mettu University, Mettu, Ethiopia
| | - Defaru Desalegn
- Department of Psychiatry, Faculty of Health and Medical Sciences, Mettu University, Mettu, Ethiopia
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Ribeiro DE, Müller HK, Elfving B, Eskelund A, Joca SR, Wegener G. Antidepressant-like effect induced by P2X7 receptor blockade in FSL rats is associated with BDNF signalling activation. J Psychopharmacol 2019; 33:1436-1446. [PMID: 31526216 DOI: 10.1177/0269881119872173] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND P2X7 receptors (P2X7R) are ligand-gated ion channels activated by adenosine 5'-triphosphate (ATP), which are involved in processes that are dysfunctional in stress response and depression, such as neurotransmitter release, and neuroimmune response. Genetic and pharmacological inhibition of the P2X7R induce antidepressant-like effects in animals exposed to stress. However, the effect of P2X7R antagonism in an animal model of depression based on selective breeding has not previously been studied, and the mechanism underling the antidepressant-like effect induced by the P2X7R blockade remains unknown. AIMS The present study aimed to: (1) determine whether P2X7R blockade induces antidepressant-like effects in the Flinders Sensitive Line (FSL) rats and, (2) investigate whether brain-derived neurotrophic factor (BDNF) signalling in the frontal cortex and hippocampus is involved in this effect. METHODS FSL and the control Flinders Resistant Line (FRL) rats were treated with vehicle or the P2X7R antagonist A-804598 (3, 10 or 30 mg/Kg/day) for 1 or 7 days before being exposed to the forced swim test (FST). After the behavioural test, animals were decapitated, their brains were removed and the frontal cortex, ventral and dorsal hippocampus were dissected for BDNF signalling analysis. RESULTS We found that repeated treatment with A-804598 (30 mg/Kg) reduced the immobility time in the FST and activated the BDNF signalling in the ventral hippocampus of FSL rats. CONCLUSIONS P2X7R blockade induces an antidepressant-like effect associated with increased levels of BDNF-AKT-p70 S6 kinase in the ventral hippocampus, which may be mediated by tropomyosin-related kinase B (TRKB) receptor activation supporting the notion of P2X7R antagonism as a potential new antidepressant strategy.
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Affiliation(s)
- Deidiane E Ribeiro
- Department of Pharmacology, School of Medicine of Ribeirão Preto - University of São Paulo, São Paulo, Brazil.,Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto - University of São Paulo, Ribeirão Preto, Brazil.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.,Department of Biochemistry, Chemistry Institute, University of São Paulo, São Paulo, Brazil
| | - Heidi K Müller
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Betina Elfving
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Amanda Eskelund
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Samia Rl Joca
- Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto - University of São Paulo, Ribeirão Preto, Brazil.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.,Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark
| | - Gregers Wegener
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.,AUGUST Centre, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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P2X7 Receptor Signaling in Stress and Depression. Int J Mol Sci 2019; 20:ijms20112778. [PMID: 31174279 PMCID: PMC6600521 DOI: 10.3390/ijms20112778] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/03/2019] [Accepted: 06/03/2019] [Indexed: 12/31/2022] Open
Abstract
Stress exposure is considered to be the main environmental cause associated with the development of depression. Due to the limitations of currently available antidepressants, a search for new pharmacological targets for treatment of depression is required. Recent studies suggest that adenosine triphosphate (ATP)-mediated signaling through the P2X7 receptor (P2X7R) might play a prominent role in regulating depression-related pathology, such as synaptic plasticity, neuronal degeneration, as well as changes in cognitive and behavioral functions. P2X7R is an ATP-gated cation channel localized in different cell types in the central nervous system (CNS), playing a crucial role in neuron-glia signaling. P2X7R may modulate the release of several neurotransmitters, including monoamines, nitric oxide (NO) and glutamate. Moreover, P2X7R stimulation in microglia modulates the innate immune response by activating the NLR family pyrin domain containing 3 (NLRP3) inflammasome, consistent with the neuroimmune hypothesis of MDD. Importantly, blockade of P2X7R leads to antidepressant-like effects in different animal models, which corroborates the findings that the gene encoding for the P2X7R is located in a susceptibility locus of relevance to depression in humans. This review will discuss recent findings linked to the P2X7R involvement in stress and MDD neuropathophysiology, with special emphasis on neurochemical, neuroimmune, and neuroplastic mechanisms.
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Ma X, Liu J, Liu T, Ma L, Wang W, Shi S, Wang Y, Gong Q, Wang M. Altered Resting-State Functional Activity in Medication-Naive Patients With First-Episode Major Depression Disorder vs. Healthy Control: A Quantitative Meta-Analysis. Front Behav Neurosci 2019; 13:89. [PMID: 31133831 PMCID: PMC6524692 DOI: 10.3389/fnbeh.2019.00089] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 04/15/2019] [Indexed: 02/05/2023] Open
Abstract
Background: There is an urgent need for a meta-analysis that characterizes the brain states of major depression disorder (MDD) patients and potentially provides reliable biomarkers, because heterogeneity in the results of resting-state functional neuroimaging has been observed between studies, with some patients not showing the consistent changes, or even opposite patterns. Thus, we evaluated consistent regional brain activity alterations in medication-naive patients with first-episode unipolar MDD and compared the results with those in healthy controls (HCs). Methods: A systematic database search was conducted (in PubMed, Ovid, and Web of Knowledge) between January 1984 and July 2016 to select resting-state functional activity studies with a voxel-wise analysis in MDD. We used anisotropic effect size-signed differential mapping to perform a whole-brain meta-analysis, comparing functional alterations between first-episode medication-naive unipolar MDD patients and HCs by integrating the studies. In addition, subgroup meta-analysis was conducted to control for the MRI analysis method. Moreover, the meta-regression analyses were performed to examine the potential effects of mean age, education duration, illness duration, and severity of depressive symptoms. Results: A total of 12 studies were included, comparing 313 MDD patients with 283 HCs. The pooled and subgroup meta-analysis found that the MDD patients showed hyperactivity in the left parahippocampal gyrus, left supplementary motor area, left amygdala, left hippocampus, and left middle frontal gyrus (MFG; orbital part), and hypoactivity in the left lingual gyrus, left middle occipital gyrus, right cuneus cortex, right MFG (orbital part), and left cerebellum. In the meta-regression analyses, the mean illness duration was positively associated with hyper-activation in the left parahippocampal gyrus and hypoactivation in the hemispheric lobule IV/V of the left cerebellum. Conclusions: This meta-analysis indicated that MDD patients had significant and robust resting-state brain activity alteration in amygdala, left hippocampus and other regions, which implicated this finding in the pathophysiology of cognitive and emotional impairment in MDD patients.
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Affiliation(s)
- Xiaoyue Ma
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China.,Department of Radiology, Zhengzhou University People's Hospital and Henan Provincial People's Hospital, Zhengzhou, China.,Henan Key Laboratory of Neurological Imaging, Zhengzhou, China
| | - Jia Liu
- Department of Radiology, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Taiyuan Liu
- Department of Radiology, Zhengzhou University People's Hospital and Henan Provincial People's Hospital, Zhengzhou, China.,Henan Key Laboratory of Neurological Imaging, Zhengzhou, China
| | - Lun Ma
- Department of Radiology, Zhengzhou University People's Hospital and Henan Provincial People's Hospital, Zhengzhou, China.,Henan Key Laboratory of Neurological Imaging, Zhengzhou, China
| | - Wenhui Wang
- Department of Radiology, Zhengzhou University People's Hospital and Henan Provincial People's Hospital, Zhengzhou, China.,Henan Key Laboratory of Neurological Imaging, Zhengzhou, China
| | - Shaojie Shi
- Department of Radiology, Zhengzhou University People's Hospital and Henan Provincial People's Hospital, Zhengzhou, China.,Henan Key Laboratory of Neurological Imaging, Zhengzhou, China
| | - Yan Wang
- Department of Radiology, Zhengzhou University People's Hospital and Henan Provincial People's Hospital, Zhengzhou, China.,Medical School, Henan University, Zhengzhou, China
| | - Qiyong Gong
- Department of Radiology, West China Hospital of Sichuan University, Huaxi MR Research Center (HMRRC), Chengdu, China
| | - Meiyun Wang
- Department of Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Academy of Medical Sciences, Zhengzhou University, Zhengzhou, China.,Department of Radiology, Zhengzhou University People's Hospital and Henan Provincial People's Hospital, Zhengzhou, China.,Henan Key Laboratory of Neurological Imaging, Zhengzhou, China.,Medical School, Henan University, Zhengzhou, China.,Henan Provincial Clinical Big Data Analysis and Service Engineering Research Center, Zhengzhou, China
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Caan W. Ethnic density and risk of postnatal depression and personality dysfunction. Br J Psychiatry 2016; 208:499. [PMID: 27143011 DOI: 10.1192/bjp.208.5.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Woody Caan
- Woody Caan, Editor, Journal of Public Mental Health, Royal Society for Public Health, John Snow House, 59 Mansell Street, London E1 8AN, UK.
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