1
|
Yadav RSP, Ansari F, Bera N, Kent C, Agrawal P. Lessons from lonely flies: Molecular and neuronal mechanisms underlying social isolation. Neurosci Biobehav Rev 2024; 156:105504. [PMID: 38061597 DOI: 10.1016/j.neubiorev.2023.105504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/01/2023] [Accepted: 12/04/2023] [Indexed: 12/26/2023]
Abstract
Animals respond to changes in the environment which affect their internal state by adapting their behaviors. Social isolation is a form of passive environmental stressor that alters behaviors across animal kingdom, including humans, rodents, and fruit flies. Social isolation is known to increase violence, disrupt sleep and increase depression leading to poor mental and physical health. Recent evidences from several model organisms suggest that social isolation leads to remodeling of the transcriptional and epigenetic landscape which alters behavioral outcomes. In this review, we explore how manipulating social experience of fruit fly Drosophila melanogaster can shed light on molecular and neuronal mechanisms underlying isolation driven behaviors. We discuss the recent advances made using the powerful genetic toolkit and behavioral assays in Drosophila to uncover role of neuromodulators, sensory modalities, pheromones, neuronal circuits and molecular mechanisms in mediating social isolation. The insights gained from these studies could be crucial for developing effective therapeutic interventions in future.
Collapse
Affiliation(s)
- R Sai Prathap Yadav
- Centre for Molecular Neurosciences, Kasturba Medical College, Manipal Academy of Higher Education, Karnataka 576104, India
| | - Faizah Ansari
- Centre for Molecular Neurosciences, Kasturba Medical College, Manipal Academy of Higher Education, Karnataka 576104, India
| | - Neha Bera
- Centre for Molecular Neurosciences, Kasturba Medical College, Manipal Academy of Higher Education, Karnataka 576104, India
| | - Clement Kent
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada
| | - Pavan Agrawal
- Centre for Molecular Neurosciences, Kasturba Medical College, Manipal Academy of Higher Education, Karnataka 576104, India.
| |
Collapse
|
2
|
Wong TY, Fang Z, Cheung C, Wong CSM, Suen YN, Hui CLM, Lee EHM, Lui SSY, Chan SKW, Chang WC, Sham PC, Chen EYH. Unveiling common psychological characteristics of proneness to aggression and general psychopathology in a large community youth cohort. Transl Psychiatry 2023; 13:255. [PMID: 37438366 DOI: 10.1038/s41398-023-02538-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 07/14/2023] Open
Abstract
Elevated aggression in individuals with psychiatric disorders is frequently reported yet aggressive acts among people with mental illness are often intertwined with proneness to aggression and other risk factors. Evidence has suggested that both general psychopathology and proneness to aggression may share common psychological characteristics. This study aims to investigate the complex relationship between general psychopathology, proneness to aggression, and their contributing factors in community youth. Here, we first examined the association between proneness to aggression and the level of general psychopathology in 2184 community youths (male: 41.2%). To identify common characteristics, we trained machine learning models using LASSO based on 230 features covering sociodemographic, cognitive functions, lifestyle, well-being, and psychological characteristics to predict levels of general psychopathology and proneness to aggression. A subsequent Gaussian Graph Model (GGM) was fitted to understand the relationships between the general psychopathology, proneness to aggression, and selected features. We showed that proneness to aggression was associated with a higher level of general psychopathology (discovery: r = 0.56, 95% CI: [0.52-0.59]; holdout: r = 0.60, 95% CI: [0.54-0.65]). The LASSO model trained on the discovery dataset for general psychopathology was able to predict proneness to aggression in the holdout dataset with a moderate correlation coefficient of 0.606. Similarly, the model trained on the proneness to aggression in the discovery dataset was able to predict general psychopathology in the holdout dataset with a correlation coefficient of 0.717. These results suggest that there is substantial shared information between the two outcomes. The GGM model revealed that isolation and impulsivity factors were directly associated with both general psychopathology and proneness to aggression. These results revealed shared psychological characteristics of general psychopathology and proneness to aggression in a community sample of youths.
Collapse
Affiliation(s)
- Ting Yat Wong
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China.
- Department of Psychology, Education University of Hong Kong, Hong Kong SAR, China.
| | - Zhiqian Fang
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China
| | - Charlton Cheung
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China
| | - Corine S M Wong
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China
| | - Yi Nam Suen
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China.
| | - Christy L M Hui
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China
| | - Edwin H M Lee
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China
| | - Simon S Y Lui
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China
| | - Sherry K W Chan
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China
- State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong SAR, China
| | - Wing Chung Chang
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China
- State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong SAR, China
| | - Pak Chung Sham
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China
- State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong SAR, China
| | - Eric Y H Chen
- Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China.
- State Key Laboratory of Brain and Cognitive Sciences, University of Hong Kong, Hong Kong SAR, China.
| |
Collapse
|
3
|
Lin YC, Zhang M, Wang SH, Chieh CW, Shen PY, Chen YL, Chang YC, Kuo TH. The deleterious effects of old social partners on Drosophila lifespan and stress resistance. NPJ AGING 2022; 8:1. [PMID: 35927252 PMCID: PMC9158773 DOI: 10.1038/s41514-022-00081-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 02/16/2022] [Indexed: 11/09/2022]
Abstract
Social interactions play important roles in the modulation of behavior, physiology, and, potentially, lifespan. Although longevity has been studied extensively in different model organisms, due to the complexity of social environments, the social modulation of aging remains poorly investigated. The present study used the fruit fly, Drosophila melanogaster, as a model to study lifespan and stress resistance under different social conditions. Our experiments first showed that social isolation increased fly lifespan, suggesting a potential deleterious effect of social companions. Furthermore, we exposed flies to different aged social partners and found that living with old animals significantly reduced lifespan and stress resistance in young animals. In contrast, living with young animals increased old animal lifespan, although the effects were less robust. Overall, our results suggest that while social interaction can influence fly health, specific social partners may have more pronounced effects than others. This study provides new evidence that different social environments have significant impacts on animal physiology and longevity.
Collapse
|
4
|
Guthrie S, Baker J, Cahill J, Hemsley B. Mealtime difficulties in adults with mental health conditions: an integrative review. J Ment Health 2022; 32:504-516. [PMID: 35037562 DOI: 10.1080/09638237.2021.2022633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Dysphagia and choking are highly prevalent in adults with mental health conditions. However, there is scant research considering the personal experience of dysphagia for this population. AIMS To understand the evidence-base for strategies to involve the patient in recognition, assessment and treatment of mealtime difficulties. METHODS This integrative review synthesised the literature on the experience of dysphagia in patients with mental health conditions. Patient consultation led to co-designed search terms and eligibility criteria for a systematic search of five scientific databases following Prisma guidance. Quality assessment of the eligible studies and reflexive thematic analysis were completed. RESULTS 31 studies were included for review. These included case reports, literature reviews and cross-sectional studies. Quality of evidence was weak and no intervention studies were identified. There was scant detail regarding the personal experience of dysphagia or choking. Themes identified related to biomedical perspectives, influencing factors presented without context, and decision-making led by clinicians. CONCLUSIONS Guidance on mental healthcare calls attention to under-diagnosis of physical co-morbidities and advocates patient inclusion. However, the patient voice in this population is rarely described regarding dysphagia. Further inclusive research is indicated to explore the impact of dysphagia and choking, and implications for interventions and outcome measures.
Collapse
Affiliation(s)
- Susan Guthrie
- School of Healthcare, University of Leeds, Leeds, UK.,Leeds and York Partnership Foundation Trust, Leeds, UK
| | - John Baker
- School of Healthcare, University of Leeds, Leeds, UK.,Leeds and York Partnership Foundation Trust, Leeds, UK
| | - Jane Cahill
- School of Healthcare, University of Leeds, Leeds, UK
| | | |
Collapse
|
5
|
Weltens I, Bak M, Verhagen S, Vandenberk E, Domen P, van Amelsvoort T, Drukker M. Aggression on the psychiatric ward: Prevalence and risk factors. A systematic review of the literature. PLoS One 2021; 16:e0258346. [PMID: 34624057 PMCID: PMC8500453 DOI: 10.1371/journal.pone.0258346] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 09/26/2021] [Indexed: 02/03/2023] Open
Abstract
INTRODUCTION On psychiatric wards, aggressive behaviour displayed by patients is common and problematic. Understanding factors associated with the development of aggression offers possibilities for prevention and targeted interventions. This review discusses factors that contribute to the development of aggression on psychiatric wards. METHOD In Pubmed and Embase, a search was performed aimed at: prevalence data, ward characteristics, patient and staff factors that are associated with aggressive behaviour and from this search 146 studies were included. RESULTS The prevalence of aggressive behaviour on psychiatric wards varied (8-76%). Explanatory factors of aggressive behaviour were subdivided into patient, staff and ward factors. Patient risk factors were diagnosis of psychotic disorder or bipolar disorder, substance abuse, a history of aggression, younger age. Staff risk factors included male gender, unqualified or temporary staff, job strain, dissatisfaction with the job or management, burn-out and quality of the interaction between patients and staff. Staff protective factors were a good functioning team, good leadership and being involved in treatment decisions. Significant ward risk factors were a higher bed occupancy, busy places on the ward, walking rounds, an unsafe environment, a restrictive environment, lack of structure in the day, smoking and lack of privacy. CONCLUSION Despite a lack of prospective quantitative data, results did show that aggression arises from a combination of patient factors, staff factors and ward factors. Patient factors were studied most often, however, besides treatment, offering the least possibilities in prevention of aggression development. Future studies should focus more on the earlier stages of aggression such as agitation and on factors that are better suited for preventing aggression such as ward and staff factors. Management and clinicians could adapt staffing and ward in line with these results.
Collapse
Affiliation(s)
- Irene Weltens
- Department of Psychiatry & Neuropsychology, Maastricht University, Maastricht, The Netherlands
| | - Maarten Bak
- Department of Psychiatry & Neuropsychology, Maastricht University, Maastricht, The Netherlands.,Mondriaan Mental Health Institute, Maastricht / Heerlen, The Netherlands
| | - Simone Verhagen
- Department of Psychiatry & Neuropsychology, Maastricht University, Maastricht, The Netherlands.,Mondriaan Mental Health Institute, Maastricht / Heerlen, The Netherlands
| | - Emma Vandenberk
- Department of Psychiatry & Neuropsychology, Maastricht University, Maastricht, The Netherlands
| | - Patrick Domen
- Department of Psychiatry & Neuropsychology, Maastricht University, Maastricht, The Netherlands.,Mondriaan Mental Health Institute, Maastricht / Heerlen, The Netherlands
| | - Thérèse van Amelsvoort
- Department of Psychiatry & Neuropsychology, Maastricht University, Maastricht, The Netherlands.,Mondriaan Mental Health Institute, Maastricht / Heerlen, The Netherlands
| | - Marjan Drukker
- Department of Psychiatry & Neuropsychology, Maastricht University, Maastricht, The Netherlands
| |
Collapse
|
6
|
A Predictive Model for Estimating Risk of Harm and Aggression in Inpatient Mental Health Clinics. Psychiatr Q 2021; 92:1055-1067. [PMID: 33481177 DOI: 10.1007/s11126-020-09880-w] [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] [Accepted: 12/13/2020] [Indexed: 10/22/2022]
Abstract
Serious mental illness is a major risk factor for aggression and violence. The present study aimed to develop and test an algorithm to predict inpatient aggressions that involve a risk of harm to self or others. This work is based on a retrospective study aimed to investigate the prediction of risk of harm and aggressions at St. Joseph's Healthcare Hamilton, between 2016 and 2017. An analysis of the risk factors most strongly associated with harmful incidents is, followed by the description of the process involved in the development of a predictive model which estimates the risk of harm. The efficiency of the model developed is finally evaluated, showing an overall accuracy of 75%: the specificity to identify episodes considered not at risk of harm is equal to 91.85%, whereas the sensitivity to identify episodes considered harmful is equal to 28.57%. The model proposed can be seen as a seminal project towards the development of a more comprehensive, precise and effective tool capable to predict the risk of harm in the inpatient setting.
Collapse
|
7
|
Zhang X, Xun Y, Wang L, Zhang J, Hou W, Ma H, Cai W, Li L, Guo Q, Li Y, Lv Z, Jia R, Tai F, He Z. Involvement of the dopamine system in the effect of chronic social isolation during adolescence on social behaviors in male C57 mice. Brain Res 2021; 1765:147497. [PMID: 33894223 DOI: 10.1016/j.brainres.2021.147497] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 03/22/2021] [Accepted: 04/18/2021] [Indexed: 01/10/2023]
Abstract
In the early stage of life, experiencing social isolation can generate long-lasting deleterious effects on behaviors and brain development. However, the effects of chronic social isolation during adolescence on social behaviors and its underlying neurobiological mechanisms remain unclear. The present study found that four weeks of social isolation during adolescence impaired social recognition ability in the three-chamber test and five-trial social recognition test, and increased aggressive-like behaviors, but reduced environmental exploration, as showed in the social interaction test. Chronic social isolation decreased levels of dopamine D2 receptor in the shell of the nucleus accumbens (NAcc) and medial prefrontal cortex. It also reduced TH in the NAcc. Using in vivo fiber photometry, it was also found that isolated mice displayed a reduction in NAcc shell activity upon exploring unfamiliar social stimuli. An injection of a 100 ng dose of the D2R agonist quinpirole into the shell of the NAcc reversed behavioral abnormalities induced by chronic social isolation. These data suggest that the dopamine system is involved in alterations in social behaviors induced by chronic social isolation. This finding sheds light on the mechanism underlying abnormalities in social behavior induced by adolescent chronic social isolation and provides a promising target to treat mental diseases relevant to social isolation.
Collapse
Affiliation(s)
- Xueni Zhang
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Yufeng Xun
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Limin Wang
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Jing Zhang
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Wenjuan Hou
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Huan Ma
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Wenqi Cai
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Laifu Li
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Qianqian Guo
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Yitong Li
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Zijian Lv
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Rui Jia
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Fadao Tai
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China.
| | - Zhixiong He
- Institute of Brain and Behavioral Sciences, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| |
Collapse
|
8
|
Salem T, Winer ES, Jordan DG, Nadorff MR, Fanning JR, Bryant J, Berman ME, Veilleux JC. Anhedonia and the Relationship Between Other Depressive Symptoms and Aggressive Behavior. JOURNAL OF INTERPERSONAL VIOLENCE 2021; 36:3257-3284. [PMID: 29768994 DOI: 10.1177/0886260518770646] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Depression has been linked to multiple forms of aggressive behavior in college students; however, it is unclear which aspects of depression explain this connection. Anhedonia, defined as the loss of interest and/or pleasure in previously enjoyed activities, may provide unique information about relationships between depression and aggression. Using cross-sectional data from two independent samples of college students (N = 747 and N = 736 for Study 1 and Study 2, respectively), we examined whether anhedonia helped explain the relationship between broader depressive symptoms and different forms of aggressive and antisocial behavior. Anhedonia accounted for variance in both self-directed aggression and antisocial behavior independent of gender, hostility, anger, other depressive symptoms, and cognitive distortions (Study 2). In addition, there were significant indirect effects of depressive symptoms on self-directed aggression (Studies 1 and 2) and antisocial behavior (Study 2) via anhedonia. Hypotheses involving other-directed aggression received mixed support, with anhedonia atemporally associated with other-directed aggression independent of broader depressive symptoms in Study 1, but not in Study 2. The current findings suggest that anhedonia is an important individual difference that helps explain the relationship between depression and aggressive and antisocial acts and that anhedonia may be differentially associated with various types of aggressive and antisocial behavior.
Collapse
Affiliation(s)
- Taban Salem
- Mississippi State University, Mississippi State, USA
| | | | - D Gage Jordan
- Mississippi State University, Mississippi State, USA
| | | | | | | | | | | |
Collapse
|
9
|
Wang HT, Yang CM, Chen KR, Chueh KH. Relationship between heart rate variability and aggressive behavior among patients with schizophrenia hospitalized in acute wards. Perspect Psychiatr Care 2020; 56:321-329. [PMID: 31410853 DOI: 10.1111/ppc.12433] [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] [Received: 05/24/2019] [Revised: 07/17/2019] [Accepted: 08/01/2019] [Indexed: 12/18/2022] Open
Abstract
PURPOSE To explore the state of mental treatment, heart rate variability (HRV), level of aggressive behavior, and their relationships among hospitalized patients with schizophrenia. DESIGN AND METHODS This study adopted a follow-up design and convenience sampling. Thirty-three subjects completed the questionnaire, and their HRV indices were measured. FINDINGS Patients' psychiatric symptoms showed a significant downward trend after hospitalization (P = .003). The standard deviation of the normal-to-normal intervals in the morning was significantly correlated with overall aggression, physical aggression, and verbal aggression. PRACTICE IMPLICATIONS HRV can be regularly monitored among inpatients with schizophrenia with a risk of high aggression as an indicator of possible aggressive behavior.
Collapse
Affiliation(s)
- Hsiao-Tzu Wang
- Department of Nursing, Bali Psychiatric Center, MOHW, New Taipei City, Taiwan, ROC
| | - Chien-Ming Yang
- Department of Psychology, National Chengchi University, Taipei City, Taiwan, ROC
| | - Kai-Ren Chen
- Department of Public Health, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan, ROC
| | - Ke-Hsin Chueh
- Department of Nursing, Fu Jen Catholic University; and Deputy Director of Department of Nursing, Fu Jen Catholic University Hospital, New Taipei City, Taiwan, ROC
| |
Collapse
|
10
|
Villanueva J, Meyer AH, Rinner MTB, Block VJ, Benoy C, Brogli S, Karekla M, Walter M, Gloster AT. The everyday lives of in- and outpatients when beginning therapy: The importance of values-consistent behavior. Int J Clin Health Psychol 2020; 20:91-99. [PMID: 32550848 PMCID: PMC7296242 DOI: 10.1016/j.ijchp.2020.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 02/11/2020] [Indexed: 12/29/2022] Open
Abstract
Background/Objective The manifestation of functional impairment in patients’ daily lives and interference with things they value is poorly understood. If values are compromised in patients, as theory suggests, social contexts (and the lack thereof) are especially important – though this is currently unexplored. We therefore examined whether daily values-consistent behavior was associated with the importance of a value and whether it involved social or non-social activity. Method Using Event Sampling Methodology, we examined daily values-consistent behavior in 57 transdiagnostic inpatients and 43 transdiagnostic outpatients at the beginning of treatment. Patients’ values-consistent behavior, its importance, and (social vs non-social) context was sampled six times per day during a one-week intensive longitudinal examination. Results Across both groups, the probability of subsequent values-consistent behavior increased if (1) it was judged as more important by the patient or (2) if it was embedded in a social context. The probability of reporting values-consistent behavior was higher for outpatients than inpatients. Conclusions Clinicians are encouraged to examine the values of their patients more closely and to especially monitor important and/or social values. Incorporating these into clinical work might increase patients’ values-consistent behavior, which can play a role in reducing suffering.
Collapse
Affiliation(s)
| | - Andrea H Meyer
- Department of Psychology, University of Basel, Basel, Switzerland
| | | | - Victoria J Block
- Department of Psychology, University of Basel, Basel, Switzerland
| | - Charles Benoy
- Center for Psychosomatics and Psychotherapy, Psychiatric Hospital of the University of Basel, Basel, Switzerland
| | - Sandra Brogli
- Center for Psychosomatics and Psychotherapy, Psychiatric Hospital of the University of Basel, Basel, Switzerland
| | - Maria Karekla
- Department of Psychology, University of Cyprus, Nicosia, Cyprus
| | - Marc Walter
- Center for Psychosomatics and Psychotherapy, Psychiatric Hospital of the University of Basel, Basel, Switzerland
| | - Andrew T Gloster
- Department of Psychology, University of Basel, Basel, Switzerland
| |
Collapse
|
11
|
Agrawal P, Kao D, Chung P, Looger LL. The neuropeptide Drosulfakinin regulates social isolation-induced aggression in Drosophila. J Exp Biol 2020; 223:jeb207407. [PMID: 31900346 PMCID: PMC7033730 DOI: 10.1242/jeb.207407] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 12/19/2019] [Indexed: 01/09/2023]
Abstract
Social isolation strongly modulates behavior across the animal kingdom. We utilized the fruit fly Drosophila melanogaster to study social isolation-driven changes in animal behavior and gene expression in the brain. RNA-seq identified several head-expressed genes strongly responding to social isolation or enrichment. Of particular interest, social isolation downregulated expression of the gene encoding the neuropeptide Drosulfakinin (Dsk), the homologue of vertebrate cholecystokinin (CCK), which is critical for many mammalian social behaviors. Dsk knockdown significantly increased social isolation-induced aggression. Genetic activation or silencing of Dsk neurons each similarly increased isolation-driven aggression. Our results suggest a U-shaped dependence of social isolation-induced aggressive behavior on Dsk signaling, similar to the actions of many neuromodulators in other contexts.
Collapse
Affiliation(s)
- Pavan Agrawal
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Damian Kao
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Phuong Chung
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Loren L Looger
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| |
Collapse
|
12
|
Berg MT, Rogers EM, Liu W, Mumford EA, Taylor BG. The interpersonal context of depression and violent behavior: A social psychological interpretation. Aggress Behav 2019; 45:437-449. [PMID: 30912161 DOI: 10.1002/ab.21832] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 03/05/2019] [Accepted: 03/06/2019] [Indexed: 11/09/2022]
Abstract
Depression is a particularly prevalent form of psychopathology affecting millions of individuals worldwide. It is associated with a variety of adverse social and behavioral outcomes. Numerous observational studies have found that depressed individuals have significantly elevated rates of interpersonal violence. As of now, the social mechanisms that explain the association between depression and violence remain understudied and not well understood. Drawing on the aggression and social psychology literatures, we argue that depressed actors suffer skills deficits and exhibit hostile communication styles that provoke grievances and disputes. We suggest that, because of these interpersonal tendencies, depression increases involvement in verbal disputes, and that frequent participation in verbal disputes foments social contexts where interpersonal violence is more common. Findings from a series of regression models based on a nationally representative sample of 2171 respondents offer support for our assumptions. The study suggests a consideration of interpersonal dynamics, particularly verbal disputes, might unlock clues about the association between depression and violence involvement.
Collapse
Affiliation(s)
- Mark T. Berg
- Department of SociologyUniversity of IowaIowa City Iowa
| | - Ethan M. Rogers
- Crime & Justice Policy Research Program, Public Policy CenterUniversity of IowaIowa City Iowa
| | - Weiwei Liu
- NORC at the University of ChicagoBethesda Maryland
| | | | | |
Collapse
|
13
|
Agrawal P, Chung P, Heberlein U, Kent C. Enabling cell-type-specific behavioral epigenetics in Drosophila: a modified high-yield INTACT method reveals the impact of social environment on the epigenetic landscape in dopaminergic neurons. BMC Biol 2019; 17:30. [PMID: 30967153 PMCID: PMC6456965 DOI: 10.1186/s12915-019-0646-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 03/07/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Epigenetic mechanisms play fundamental roles in brain function and behavior and stressors such as social isolation can alter animal behavior via epigenetic mechanisms. However, due to cellular heterogeneity, identifying cell-type-specific epigenetic changes in the brain is challenging. Here, we report the first use of a modified isolation of nuclei tagged in specific cell type (INTACT) method in behavioral epigenetics of Drosophila melanogaster, a method we call mini-INTACT. RESULTS Using ChIP-seq on mini-INTACT purified dopaminergic nuclei, we identified epigenetic signatures in socially isolated and socially enriched Drosophila males. Social experience altered the epigenetic landscape in clusters of genes involved in transcription and neural function. Some of these alterations could be predicted by expression changes of four transcription factors and the prevalence of their binding sites in several clusters. These transcription factors were previously identified as activity-regulated genes, and their knockdown in dopaminergic neurons reduced the effects of social experience on sleep. CONCLUSIONS Our work enables the use of Drosophila as a model for cell-type-specific behavioral epigenetics and establishes that social environment shifts the epigenetic landscape in dopaminergic neurons. Four activity-related transcription factors are required in dopaminergic neurons for the effects of social environment on sleep.
Collapse
Affiliation(s)
- Pavan Agrawal
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.
| | - Phuong Chung
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA
| | - Ulrike Heberlein
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA
| | - Clement Kent
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.
- Department of Biology, York University, Toronto, Canada.
| |
Collapse
|
14
|
Nicholls TL, Brink J, Desmarais SL, Webster CD, Martin ML. The Short-Term Assessment of Risk and Treatability (START). Assessment 2016; 13:313-27. [PMID: 16880282 DOI: 10.1177/1073191106290559] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A new assessment scheme-the Short-Term Assessment of Risk and Treatability (START)- presents a workable method for assessing risks to self and others encountered in mentally and personality disordered clients. This study aimed to demonstrate (a) prevalence and severity of risk behaviors measured by the START, (b) psychometric properties of START, (c) similarities and differences in START scores across different mental health professionals, and (d) concurrent validity of START with diverse negative outcomes. Treatment team members completed the 20-item, dynamically focused START for 137 forensic psychiatric inpatients. Prevalence and severity of START risk domains were measured for 51 patients detained in the hospital for 1 year. Results revealed high rates of generally low-level adverse events. With some exceptions, START scores were meaningfully associated with outcomes measured by a modified Overt Aggression Scale.
Collapse
Affiliation(s)
- Tonia L Nicholls
- British Columbia Mental Health and Addictions, Simon Fraser University, Canada.
| | | | | | | | | |
Collapse
|
15
|
Cho UJ, Lee J, Kim HW, Lee JS, Joo YH, Kim SY, Kim CY, Shin YW. Age structure at diagnosis affects aggression in a psychiatric inpatient population: age structure affecting inpatient aggression. Psychiatry Res 2014; 220:1059-63. [PMID: 25453640 DOI: 10.1016/j.psychres.2014.09.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 08/22/2014] [Accepted: 09/30/2014] [Indexed: 11/18/2022]
Abstract
Study of inpatient aggression in psychiatric inpatient units (PIUs), where vulnerable patients interact intensely in small groups, is hampered by a lack of systematic monitoring of aggressive events in the context of group dynamics. Our current study examines the relationship between aggression and group structure in the PIU of a general tertiary-care hospital over a 9-month period. The severity of aggression was monitored daily using the Overt Aggression Scale (OAS). Clinical data including the daily number and mean age of subpopulations with different diagnoses were acquired. Cross-correlation function and autoregressive integrated moving average modeling were used to assess the effects of various group structure parameters on the incidence of aggressive events in the PIU. The daily total OAS score correlated positively with the daily mean age of patients with schizophrenia and bipolar disorder. By contrast, the OAS total score demonstrated a negative correlation with the daily mean age of patients with major depression. The age of the patients at diagnosis is an important group structure that affects the incidence of aggression in a PIU.
Collapse
|
16
|
Abstract
Previous reviews of the literature from 1976 to 2000 documented two categories of assaultive psychiatric patients: (1) male patients with schizophrenic illness and histories of violence toward others and substance use disorder and (2) male/female patients with personality disorders and histories of violence toward others, personal victimization, and substance use. The present study reviewed the published findings on American assaultive patients from 2000 to 2012. The present findings partially supported the earlier findings in that patients with schizophrenic illness continued to present the greatest risk for assault. However, personality disordered patients were not equal in assault risk to patients with affective disorders. Possible explanations for these findings and a detailed methodological review are presented.
Collapse
|
17
|
McCann TV, Baird J, Muir-Cochrane E. Attitudes of clinical staff toward the causes and management of aggression in acute old age psychiatry inpatient units. BMC Psychiatry 2014; 14:80. [PMID: 24642026 PMCID: PMC3974596 DOI: 10.1186/1471-244x-14-80] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 03/12/2014] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND In psychiatry, most of the focus on patient aggression has been in adolescent and adult inpatient settings. This behaviour is also common in elderly people with mental illness, but little research has been conducted into this problem in old age psychiatry settings. The attitudes of clinical staff toward aggression may affect the way they manage this behaviour. The purpose of this study was to examine the attitudes of clinical staff toward the causes and management of aggression in acute old age psychiatry inpatient settings. METHODS A convenience sample of clinical staff were recruited from three locked acute old age psychiatry inpatient units in Melbourne, Australia. They completed the Management of Aggression and Violence Scale, which assessed the causes and managment of aggression in psychiatric settings. RESULTS Eighty-five staff completed the questionnaire, comprising registered nurses (61.1%, n = 52), enrolled nurses (27.1%, n = 23) and medical and allied health staff (11.8%, n = 10). A range of causative factors contributed to aggression. The respondents had a tendency to disagree that factors directly related to the patient contributed to this behaviour. They agreed patients were aggressive because of the environment they were in, other people contributed to them becoming aggressive, and patients from certain cultural groups were prone to these behaviours. However, there were mixed views about whether patient aggression could be prevented, and this type of behaviour took place because staff did not listen to patients. There was agreement medication was a valuable approach for the management of aggression, negotiation could be used more effectively in such challenging behaviour, and seclusion and physical restraint were sometimes used more than necessary. However, there was disagreement about whether the practice of secluding patients should be discontinued. CONCLUSIONS Aggression in acute old age psychiatry inpatient units occurs occasionally and is problematic. A range of causative factors contribute to the onset of this behaviour. Attitudes toward the management of aggression are complex and somewhat contradictory and can affect the way staff manage this behaviour; therefore, wide-ranging initiatives are needed to prevent and deal with this type of challenging behaviour.
Collapse
Affiliation(s)
- Terence V McCann
- Discipline of Mental Health Nursing and Aged Care, College of Health and Biomedicine, Victoria University, PO Box 1428, Melbourne 8001, Victoria, Australia.
| | - John Baird
- NorthWestern Mental Health Old Aged Persons’ Mental Health Program, Harvester Building, 4C Devonshire Road, Sunshine 3020, Victoria, Australia
| | - Eimear Muir-Cochrane
- School of Nursing and Midwifery, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| |
Collapse
|
18
|
Chen P, Coccaro EF, Jacobson KC. Hostile attributional bias, negative emotional responding, and aggression in adults: moderating effects of gender and impulsivity. Aggress Behav 2012; 38:47-63. [PMID: 24833604 PMCID: PMC4243523 DOI: 10.1002/ab.21407] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Revised: 08/11/2011] [Accepted: 09/30/2011] [Indexed: 12/19/2022]
Abstract
The current study examined the main effects of hostile attributional bias (HAB) and negative emotional responding on a variety of aggressive behaviors in adults, including general aggression, physical aggression, relational aggression, and verbal aggression. Effects of both externalizing (anger) and internalizing (embarrassment/upset) negative emotions were considered. In addition, the moderating roles of gender and impulsivity on the effects of HAB and negative emotional responding were explored. Multilevel models were fitted to data from 2,749 adult twins aged 20-55 from the PennTwins cohort. HAB was positively associated with all four forms of aggression. There was also a significant interaction between impulsivity and HAB for general aggression. Specifically, the relationship between HAB and general aggression was only significant for individuals with average or above-average levels of impulsivity. Negative emotional responding was also found to predict all measures of aggression, although in different ways. Anger was positively associated with all forms of aggression, whereas embarrassment/upset predicted decreased levels of general, physical, and verbal aggression but increased levels of relational aggression. The associations between negative emotional responding and aggression were generally stronger for males than females. The current study provides evidence for the utility of HAB and negative emotional responding as predictors of adult aggression and further suggests that gender and impulsivity may moderate their links with aggression.
Collapse
Affiliation(s)
- Pan Chen
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, CNPRU, Chicago, Illinois
| | - Emil F. Coccaro
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, CNPRU, Chicago, Illinois
| | - Kristen C. Jacobson
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, CNPRU, Chicago, Illinois
| |
Collapse
|
19
|
Cornaggia CM, Beghi M, Pavone F, Barale F. Aggression in psychiatry wards: a systematic review. Psychiatry Res 2011; 189:10-20. [PMID: 21236497 DOI: 10.1016/j.psychres.2010.12.024] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2009] [Revised: 12/04/2010] [Accepted: 12/08/2010] [Indexed: 01/13/2023]
Abstract
Although fairly frequent in psychiatric in-patient, episodes of aggression/violence are mainly limited to verbal aggression, but the level of general health is significantly lower in nurses who report 'frequent' exposure to violent incidents, and there is disagreement between patients and staff concerning predictors of these episodes. We searched the Pubmed, Embase and PsychInfo databases for English, Italian, French or German language papers published between 1 January 1990 and 31 March 2010 using the key words "aggress*" (aggression or aggressive) "violen*" (violence or violent) and "in-patient" or "psychiatric wards", and the inclusion criterion of an adult population (excluding all studies of selected samples such as a specific psychiatric diagnosis other than psychosis, adolescents or the elderly, men/women only, personality disorders and mental retardation). The variables that were most frequently associated with aggression or violence in the 66 identified studies of unselected psychiatric populations were the existence of previous episodes, the presence of impulsiveness/hostility, a longer period of hospitalisation, non-voluntary admission, and aggressor and victim of the same gender; weaker evidence indicated alcohol/drug misuse, a diagnosis of psychosis, a younger age and the risk of suicide. Alcohol/drug misuse, hostility, paranoid thoughts and acute psychosis were the factors most frequently involved in 12 studies of psychotic patients. Harmony among staff (a good working climate) seems to be more useful in preventing aggression than some of the other strategies used in psychiatric wards, such as the presence of male nurses.
Collapse
Affiliation(s)
- Cesare Maria Cornaggia
- Department of Clinical Psychiatry, University of Milano-Bicocca, Monza, Italy; Organic Psychiatry Unit, Zucchi Clinical Institute, Carate Brianza, Italy
| | | | | | | |
Collapse
|
20
|
Sadeh N, Javdani S, Finy MS, Verona E. Gender differences in emotional risk for self- and other-directed violence among externalizing adults. J Consult Clin Psychol 2011; 79:106-17. [PMID: 21261437 DOI: 10.1037/a0022197] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Women and men generally differ in how frequently they engage in other- and self-directed physical violence and may show distinct emotional risk factors for engagement in these high-impact behaviors. To inform this area, we investigated gender differences in the relationship of emotional tendencies (i.e., anger, hostility, and anhedonic depression) that may represent risk for other-directed violence (i.e., physical fighting, attacking others unprovoked) and self-directed violence (i.e., self-injury, suicide attempts). METHOD The ethnically diverse sample consisted of 372 adults (252 men and 120 women age 18-55) with a history of criminal convictions. Facets of emotional risk assessed with the Aggression Questionnaire (Buss & Warren, 2000) and Mood and Anxiety Symptom Questionnaire (Watson et al., 1995) were entered simultaneously as explanatory variables in regression analyses to investigate their unique contributions to other- and self-directed physical violence in men and women. RESULTS Analyses revealed that anhedonic depressive tendencies negatively predicted other-directed violence and positively predicted self-directed violence in men and women, consistent with a model of depression in which aggression is turned inward (Henriksson et al., 1993). Gender differences, however, emerged for the differential contributions of anger and hostility to other- and self-directed violence. Trait anger (i.e., difficulty controlling one's temper) was associated with other-directed violence selectively in men, whereas trait hostility (i.e., suspiciousness and alienation) was associated with self- and other-directed violence among women. CONCLUSIONS The divergent findings for trait anger and hostility underscore the need to examine gender-specific risk factors for physical violence to avoid excluding potentially useful clinical features of these mental health outcomes.
Collapse
Affiliation(s)
- Naomi Sadeh
- Department of Psychology, University of Illinois at Urbana-Champaign, 603 East Daniel Street, Champaign, IL 61820, USA.
| | | | | | | |
Collapse
|
21
|
Lynch DM, Noel HC. Integrating DSM-IV Factors to Predict Violence in High-Risk Psychiatric Patients. J Forensic Sci 2010; 55:121-8. [DOI: 10.1111/j.1556-4029.2009.01197.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
22
|
Ferguson CJ. Research on the Effects of Violent Video Games: A Critical Analysis. SOCIAL AND PERSONALITY PSYCHOLOGY COMPASS 2009. [DOI: 10.1111/j.1751-9004.2009.00175.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
23
|
Abstract
Most nurses have been verbally or physically assaulted. Use these tips to defuse a potentially dangerous situation.
Collapse
Affiliation(s)
- Nicole Flores
- Medical/Surgical Unit, St. Francis Hospital in Federal Way, Wash, USA
| |
Collapse
|