1
|
Valencia M, Medina R, Calixto E, Rodríguez N. Cerebral, Psychosocial, Family Functioning and Disability of Persons with Schizophrenia. Neuropsychiatr Dis Treat 2022; 18:2069-2082. [PMID: 36133029 PMCID: PMC9484561 DOI: 10.2147/ndt.s370449] [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: 04/12/2022] [Accepted: 07/30/2022] [Indexed: 11/23/2022] Open
Abstract
The human brain is the most cognitively capable of mammalian brains, endowed as it is with an overdeveloped cerebral cortex that, in parallel, renders it vulnerable to mental disorders. Schizophrenia is the expression of the dysregulation of the neuronal activity of cortical and subcortical regions due to modifications in the levels of the various neurotransmitters, especially of dopamine, with a reciprocal, intimate relationship among genes with environmental and psychosocial factors. If the dopaminergic system increases the function prefrontal cortex will be reduced: this is the main reason of social, occupational and familiar disruption. The present article describes the function of the brain in schizophrenia and its relation with anatomical, physiological, and genetic changes, in addition to identifying, psychosocial and family factors that can be determinant in the functionality of the patient. A review of national and international bibliography was conducted bearing in mind the following variables: functioning at the cerebral level; psychosocial functioning, familial functioning, disability, and functionality in persons with schizophrenia. Due to the variety of the issues included in this review, it can be concluded that schizophrenia is the product of a complex array of symptoms, deficits and disabilities. It was identified that there is a reciprocal confluence of diverse genetic, psychosocial, familial, environmental, educative, and social factors which affect the functionality of persons with this disorder. The latter makes it necessary to study the patient taking into consideration all of these components in an integral manner.
Collapse
Affiliation(s)
- Marcelo Valencia
- Department of Innovation and Global Health, Epidemiologic and Psychosocial Research Direction; National Institute of Psychiatry Ramón de la Fuente, Mexico City, Mexico
| | - Rafael Medina
- Institute Jaliscience of Mental Health, Guadalajara, Jalisco, Mexico
| | - Eduardo Calixto
- Neurobiology Department, Neurosciences Direction, National Institute of Psychiatry Ramon de la Fuente, Mexico City, Mexico
| | - Noemí Rodríguez
- Institute Jaliscience of Mental Health, Guadalajara, Jalisco, Mexico
| |
Collapse
|
2
|
Chen PH, Ku HL, Wang JK, Kang JH, Hsu TY. Electroencephalographic Microstates are Correlated with Global Functioning in Schizophrenia But Not in Bipolar Disorder. Clin EEG Neurosci 2022; 54:215-223. [PMID: 35491557 DOI: 10.1177/15500594221098286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives. Microstate studies of electroencephalograms (EEGs) on schizophrenia (SCZ) and bipolar disorder (BD) demonstrated categorical differences. The relationship between microstate indices and clinical symptoms in each group, however, remained unclear. Our objective was to examine associations between EEG microstates and the core features of SCZ and BD. Methods. This study examined the resting EEG data of 40 patients with SCZ, 19 patients with BD (12 BD type I and 7 BD type II), and 16 healthy controls. EEG topographic maps were divided into four canonical microstate classes: A, B, C, and D. The Positive and Negative Syndrome Scale (PANSS), Young Mania Rating Scale, Hamilton Depression Rating Scale (HAMD), and Global Assessment of Functioning (GAF) were used to measure clinical symptoms and global functioning. Results. There was a significant inverse correlation between the proportion of time spent in microstate class A and GAF in patients with SCZ but not BD. Furthermore, the occurrence of microstate class A was positively correlated with the Positive Scale scores of the PANSS. Nevertheless, there were no group differences between the microstate classes. Conclusions. The results of this study indicate a negative correlation between microstate class A and global functioning in SCZ but not in BD. The association may be mediated by positive symptoms of SZ. Neural mechanisms underlying this relationship require further investigation.
Collapse
Affiliation(s)
- Pao-Huan Chen
- Department of Psychiatry, 63474Taipei Medical University Hospital, Taipei.,Department of Psychiatry, School of Medicine, College of Medicine, 38032Taipei Medical University, Taipei
| | - Hsiao-Lun Ku
- Department of Psychiatry, School of Medicine, College of Medicine, 38032Taipei Medical University, Taipei.,Department of Psychiatry, 38032Taipei Medical University Shuang-Ho Hospital, New Taipei City.,Brain and Consciousness Research Centre, TMU Shuang-Ho Hospital, New Taipei City
| | - Jiunn-Kae Wang
- Department of Psychiatry, School of Medicine, College of Medicine, 38032Taipei Medical University, Taipei.,Department of Psychiatry, 38032Taipei Medical University Shuang-Ho Hospital, New Taipei City.,Brain and Consciousness Research Centre, TMU Shuang-Ho Hospital, New Taipei City
| | - Jiunn-Horng Kang
- Department of Physical Medicine and Rehabilitation, 63474Taipei Medical University Hospital, Taipei.,Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei.,Research Center of Artificial Intelligence in Medicine, 38032Taipei Medical University, Taipei
| | - Tzu-Yu Hsu
- Brain and Consciousness Research Centre, TMU Shuang-Ho Hospital, New Taipei City.,Graduate Institute of Mind, Brain and Consciousness, 38032Taipei Medical University, Taipei
| |
Collapse
|
3
|
Serra-Navarro M, Amoretti S, Verdolini N, Forte MF, Sánchez-Torres AM, Vieta E, Clougher D, Lobo A, González-Pinto A, Panadero R, Roldán A, Carvalho AF, de la Serna E, Toll A, Ramos-Quiroga JA, Torrent C, Cuesta MJ, Bernardo M. Influence of clinical and neurocognitive factors in psychosocial functioning after a first episode non-affective psychosis: Differences between males and females. Front Psychiatry 2022; 13:982583. [PMID: 36339856 PMCID: PMC9632657 DOI: 10.3389/fpsyt.2022.982583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/28/2022] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Deficits in psychosocial functioning are present in the early stages of psychosis. Several factors, such as premorbid adjustment, neurocognitive performance, and cognitive reserve (CR), potentially influence functionality. Sex differences are observed in individuals with psychosis in multiple domains. Nonetheless, few studies have explored the predictive factors of poor functioning according to sex in first-episode psychosis (FEP). This study aimed to explore sex differences, examine changes, and identify predictors of functioning according to sex after onset. MATERIALS AND METHODS The initial sample comprised 588 individuals. However, only adults with non-affective FEP (n = 247, 161 males and 86 females) and healthy controls (n = 224, 142 males and 82 females) were included. A comprehensive assessment including functional, neuropsychological, and clinical scales was performed at baseline and at 2-year follow-up. A linear regression model was used to determine the predictors of functioning at 2-year follow-up. RESULTS FEP improved their functionality at follow-up (67.4% of both males and females). In males, longer duration of untreated psychosis (β = 0.328, p = 0.003) and worse premorbid adjustment (β = 0.256, p = 0.023) were associated with impaired functioning at 2-year follow-up, while in females processing speed (β = 0.403, p = 0.003), executive function (β = 0.299, p = 0.020) and CR (β = -0.307, p = 0.012) were significantly associated with functioning. CONCLUSION Our data indicate that predictors of functioning at 2-year follow-up in the FEP group differ according to sex. Therefore, treatment and preventative efforts may be adjusted taking sex into account. Males may benefit from functional remediation at early stages. Conversely, in females, early interventions centered on CR enhancement and cognitive rehabilitation may be recommended.
Collapse
Affiliation(s)
- Maria Serra-Navarro
- Bipolar and Depressive Disorders Unit, Hospital Clinic of Barcelona, Institute of Neurosciences, IDIBAPS, University of Barcelona, Barcelona, Catalonia, Spain.,Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain
| | - Silvia Amoretti
- Bipolar and Depressive Disorders Unit, Hospital Clinic of Barcelona, Institute of Neurosciences, IDIBAPS, University of Barcelona, Barcelona, Catalonia, Spain.,Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute, August Pi I Sunyer Biomedical Research Institute (IDIBAPS), University of Barcelona, Barcelona, Spain.,Psychiatric Genetics Unit, Group of Psychiatry, Mental Health and Addictions, Vall d'Hebron Research Institute (VHIR), Barcelona, Catalonia, Spain
| | - Norma Verdolini
- Bipolar and Depressive Disorders Unit, Hospital Clinic of Barcelona, Institute of Neurosciences, IDIBAPS, University of Barcelona, Barcelona, Catalonia, Spain.,Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Local Health Unit Umbria 1, Department of Mental Health, Mental Health Center of Perugia, Perugia, Italy
| | - María Florencia Forte
- Bipolar and Depressive Disorders Unit, Hospital Clinic of Barcelona, Institute of Neurosciences, IDIBAPS, University of Barcelona, Barcelona, Catalonia, Spain.,Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute, August Pi I Sunyer Biomedical Research Institute (IDIBAPS), University of Barcelona, Barcelona, Spain
| | - Ana M Sánchez-Torres
- Department of Psychiatry, Complejo Hospitalario de Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
| | - Eduard Vieta
- Bipolar and Depressive Disorders Unit, Hospital Clinic of Barcelona, Institute of Neurosciences, IDIBAPS, University of Barcelona, Barcelona, Catalonia, Spain.,Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain
| | - Derek Clougher
- Bipolar and Depressive Disorders Unit, Hospital Clinic of Barcelona, Institute of Neurosciences, IDIBAPS, University of Barcelona, Barcelona, Catalonia, Spain
| | - Antonio Lobo
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Department of Medicine and Psychiatry, Instituto de Investigación Sanitaria Aragón (IIS Aragón), Zaragoza University, Zaragoza, Spain
| | - Ana González-Pinto
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Araba University Hospital, Bioaraba Research Institute, Vitoria-Gasteiz, Spain.,Department of Psychiatry, University of the Basque Country (UPV-EHU), Vitoria-Gasteiz, Spain
| | - Rocío Panadero
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Department of Child and Adolescent Psychiatry, Hospital General Universitario Gregorio Marañón, School of Medicine, Institute of Psychiatry and Mental Health, Universidad Complutense, IiSGM, Madrid, Spain
| | - Alexandra Roldán
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Department of Psychiatry, Hospital de la Santa Creu i Sant Pau, Institut d'Investigació Biomèdica-Sant Pau (IIB-SANT PAU), Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - André F Carvalho
- Innovation in Mental and Physical Health and Clinical Treatment (IMPACT), School of Medicine, Barwon Health, The Institute for Mental and Physical Health and Clinical Translation, Deakin University, Geelong, VIC, Australia
| | - Elena de la Serna
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Department of Child and Adolescent Psychiatry and Psychology, 2017SGR881, Institut Clínic de Neurociències, Hospital Clínic Universitari, CIBERSAM, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Department of Medicine, University of Barcelona, Barcelona, Spain
| | - Alba Toll
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Hospital del Mar Medical Research Institute (IMIM), Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - J A Ramos-Quiroga
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Psychiatric Genetics Unit, Group of Psychiatry, Mental Health and Addictions, Vall d'Hebron Research Institute (VHIR), Barcelona, Catalonia, Spain.,Department of Psychiatry, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain.,Department of Psychiatry and Legal Medicine, Universitat Autònoma de Barcelona, Barcelona, Catalonia, Spain
| | - Carla Torrent
- Bipolar and Depressive Disorders Unit, Hospital Clinic of Barcelona, Institute of Neurosciences, IDIBAPS, University of Barcelona, Barcelona, Catalonia, Spain.,Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain
| | - Manuel J Cuesta
- Department of Psychiatry, Complejo Hospitalario de Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
| | - Miguel Bernardo
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute, August Pi I Sunyer Biomedical Research Institute (IDIBAPS), University of Barcelona, Barcelona, Spain
| | | |
Collapse
|
4
|
Evaluation of IGF-1 as a novel theranostic biomarker for schizophrenia. J Psychiatr Res 2021; 140:172-179. [PMID: 34116443 DOI: 10.1016/j.jpsychires.2021.05.078] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 05/18/2021] [Accepted: 05/29/2021] [Indexed: 11/20/2022]
Abstract
OBJECTIVE In the current study, we aimed to investigate fasting plasma levels of glucose, insulin, growth hormone, IGF-1, and lipid profile in remission schizophrenia patients, treatment resistant schizophrenia patients and healthy controls and to determine whether IGF-1 levels can be used as a theranostic biomarker in schizophrenia. METHODS Sixty-two patients under remission from schizophrenia, sixty-five treatment-resistant patients with schizophrenia and sixty-two healthy controls were included in the study. All patients were recruited and evaluated over 11 months. Symptoms at the time of evaluation were assessed twice using BPRS, PANSS, CGI, and GAF scales by an experienced psychiatrist in accordance with Andreaseen's remission criteria and TRIPS group resistance criteria. Blood samples were collected from all participants to determine fasting glucose, LDL, HDL, Triglyceride, Total Cholesterol, fasting, insulin, GH and IGF-1 levels. RESULTS Fasting blood glucose levels were found to be higher in patients with schizophrenia than in healthy controls. Moreover, LDL levels of the treatment sensitive group were higher than that of the treatment resistant group while they were not significantly different from the healthy controls. IGF-1 levels were lower in the treatment sensitive group than in both treatment resistant and healthy control groups. IGF-1, LDL and age of disease onset were found to be significantly associated with treatment resistance in a regression model. DISCUSSION In the present study, remitted patients with schizophrenia could be distinguished from treatment-resistant patients and healthy controls with serum IGF-1, fasting glucose and LDL levels. In addition, we found that smoking and age of disease onset together with IGF-1 levels could significantly predict resistance to treatment.
Collapse
|
5
|
Wambua GN, Kilian S, Ntlantsana V, Chiliza B. The association between resilience and psychosocial functioning in schizophrenia: A systematic review and meta-analysis. Psychiatry Res 2020; 293:113374. [PMID: 32795771 DOI: 10.1016/j.psychres.2020.113374] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 02/06/2023]
Abstract
The exploration of resilience in schizophrenia is recent and poorly understood. Literature suggests that exploration of the construct will help with the understanding of not only risk but also protective factors in individuals living with psychosis. We performed a systematic review and meta-analysis with the primary aim of synthesizing the evidence of an existing relationship between resilience and schizophrenia-spectrum disorders (SSD). We searched electronic databases for relevant articles that evaluated resilience and psychosocial functioning in participants with schizophrenia-spectrum disorders. Sixteen studies were deemed eligible for review. We also conducted a random-effects meta-analysis to explore resilience levels of study participants. Our findings highlight lower levels of resilience in SSD cohorts and poorer psychosocial functioning among those with low levels of resilience. Evidence also suggests that the presence of resilience in individuals with schizophrenia-spectrum disorders is associated with improved psychosocial functioning.
Collapse
Affiliation(s)
- G Nduku Wambua
- Department of Psychiatry, University of Kwa-Zulu Natal, Durban, South Africa.
| | - Sanja Kilian
- Department of Psychiatry, Stellenbosch University, Cape Town, South Africa
| | - Vuyokazi Ntlantsana
- Department of Psychiatry, University of Kwa-Zulu Natal, Durban, South Africa
| | - Bonginkosi Chiliza
- Department of Psychiatry, University of Kwa-Zulu Natal, Durban, South Africa
| |
Collapse
|
6
|
Zakharyan R, Ghazaryan H, Kocourkova L, Chavushyan A, Mkrtchyan A, Zizkova V, Arakelyan A, Petrek M. Association of Genetic Variants of Dopamine and Serotonin In Schizophrenia. Arch Med Res 2020; 51:13-20. [PMID: 32086104 DOI: 10.1016/j.arcmed.2019.12.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 11/29/2019] [Accepted: 12/16/2019] [Indexed: 01/03/2023]
Abstract
BACKGROUND Several studies indicated that antipsychotic treatment response and side effect manifestation can be different due to inter-individual variability in genetic variations. AIM OF THE STUDY Here we perform a case-control study to explore a potential association between schizophrenia and variants within the antipsychotic drug molecular targets (DRD1, DRD2, DRD3, HTR2A, HTR6) and metabolizing enzymes (CYP2D6, COMT) genes in Armenian population including also analysis of their possible relationship with disease clinical symptoms. METHODS A total of 18 SNPs was studied in patients with schizophrenia (n = 78) and healthy control subjects (n = 77) using MassARRAY genotyping. RESULTS We found that two studied genetic variants, namely DRD2 rs4436578*C and HTR2A rs6314*A are underrepresented in the group of patients compared to healthy subjects. After the correction for multiple testing, the rs4436578*C variant remained significant while the rs6314*A reported borderline significance. No significant differences in minor allele frequencies for other studied variants were identified. Also, a relationship between the genotypes and age of onset as well as disease duration has been detected. CONCLUSIONS The DRD2 rs4436578*C genetic variant might have protective role against schizophrenia, at least in Armenians.
Collapse
Affiliation(s)
- Roksana Zakharyan
- Institute of Molecular Biology NAS RA, Yerevan, Armenia; Russian-Armenian, University, Yerevan, Armenia.
| | - Hovsep Ghazaryan
- Andranik Chavushyan, Institute of Molecular Biology NAS RA, Yerevan, Armenia
| | - Lenka Kocourkova
- Department of Pathological Physiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
| | - Andranik Chavushyan
- Andranik Chavushyan, Institute of Molecular Biology NAS RA, Yerevan, Armenia
| | - Artur Mkrtchyan
- Department of Psychiatry, National Institute of Health, MH RA, Yerevan, Armenia
| | - Veronika Zizkova
- Department of Pathological Physiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
| | - Arsen Arakelyan
- Institute of Molecular Biology NAS RA, Yerevan, Armenia; Russian-Armenian, University, Yerevan, Armenia
| | - Martin Petrek
- Department of Pathological Physiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic
| |
Collapse
|
7
|
Immonen J, Jääskeläinen E, Korpela H, Miettunen J. Age at onset and the outcomes of schizophrenia: A systematic review and meta-analysis. Early Interv Psychiatry 2017; 11:453-460. [PMID: 28449199 PMCID: PMC5724698 DOI: 10.1111/eip.12412] [Citation(s) in RCA: 166] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 10/25/2016] [Indexed: 12/03/2022]
Abstract
The aim of this study was to analyse the effect of age at onset on the long-term clinical, social and global outcomes of schizophrenia through a systematic review and a meta-analysis. Original studies were searched from Web of Science, PsycINFO, Pubmed and Scopus, as well as manually. Naturalistic studies with at least a 2-year follow-up were included. Of the 3509 search results, 81 articles fulfilled the inclusion criteria. The meta-analysis was performed in Stata as a random-effect analysis with correlation coefficients between age at onset and the outcomes (categorized into remission, relapse, hospitalization, positive symptoms, negative symptoms, total symptoms, general clinical outcome, employment, social/occupational functioning and global outcome). There was a statistically significant (P < .05) correlation between younger age at onset and more hospitalizations (number of studies, n = 9; correlation, r = 0.17; 95% confidence interval, CI 0.09-0.25), more negative symptoms (n = 7; r = 0.14; 95% CI 0.01-0.27), more relapses (n = 3; r = 0.11; 95% CI 0.02-0.20), poorer social/occupational functioning (n = 12; r = 0.15; 95% CI 0.05-0.25) and poorer global outcome (n = 13; r = 0.14; 95% CI 0.07-0.22). Other relationships were not significant. This was the first systematic review of the effects of age at onset on the long-term outcomes of schizophrenia. The results show that age at onset has a small, but significant impact on some of the outcomes of schizophrenia.
Collapse
Affiliation(s)
- Johanna Immonen
- Center for Life Course Health ResearchUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
| | - Erika Jääskeläinen
- Center for Life Course Health ResearchUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
- Oulu Occupational HealthOuluFinland
| | - Hanna Korpela
- Center for Life Course Health ResearchUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
| | - Jouko Miettunen
- Center for Life Course Health ResearchUniversity of OuluOuluFinland
- Medical Research Center OuluOulu University Hospital and University of OuluOuluFinland
| |
Collapse
|
8
|
Exploring functioning in schizophrenia: Predictors of functional capacity and real-world behaviour. Psychiatry Res 2017; 251:118-124. [PMID: 28199909 DOI: 10.1016/j.psychres.2017.02.019] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 01/19/2017] [Accepted: 02/08/2017] [Indexed: 02/06/2023]
Abstract
Impairment in daily functioning still represents a major treatment issue in schizophrenia and a more in-depth knowledge of underlying constructs is crucial for interventions to translate into better outcomes. This study aims to model factors influencing both functional capacity and real-life behaviour in a sample of outpatients with chronic schizophrenia, through a comprehensive assessment including evaluations of psychopathology, cognitive and social cognitive abilities, premorbid adjustment, family environment and early childhood experiences. No significant correlation was observed between functional capacity and real-life behaviour. Functional capacity was significantly predicted by IQ, while real-life behaviour was significantly predicted by empathy, affect recognition and symptoms. Functional capacity seems mainly related to neurocognition, whereas real-life behaviour appears more complex, requiring the integration of different factors including symptoms, with a major role of empathy. Results thus support a divergence between the two constructs of functioning and their underlying components and highlight the need to target both dimensions through individualized sequential rehabilitation programs in order to optimize functional outcome.
Collapse
|
9
|
Best MW, Gupta M, Bowie CR, Harvey PD. A Longitudinal Examination of the Moderating Effects of Symptoms on the Relationship between Functional Competence and Real World Functional Performance in Schizophrenia. SCHIZOPHRENIA RESEARCH-COGNITION 2014; 1:90-95. [PMID: 25267939 DOI: 10.1016/j.scog.2014.03.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Many individuals with schizophrenia experience remission of prominent positive symptoms but continue to experience impairments in real world functioning. Residual negative and depressive symptoms may have a direct impact on functioning and impair patients' ability to use the cognitive and functional skills that they possess (competence) in the real world (functional performance). METHODS 136 individuals (100 men, 36 women) with schizophrenia were classified as having primarily positive symptoms, primarily negative symptoms, primarily depressive symptoms, or undifferentiated symptom profiles. Performance based measures of cognition and adaptive and interpersonal functional competence were used, along with ratings of real world behavior by high contact clinicians. Assessments were performed at baseline and at an 18-month follow-up. RESULTS The relationships between neurocognition and capacity / performance were not moderated by symptom group ps > .091; neurocognition predicted capacity and performance for all groups ps < .001. The relationship between adaptive competence and adaptive performance was moderated by symptom group, ps < .01, such that baseline competence only predicted future performance ratings for participants with primarily positive or undifferentiated symptoms, and not for individuals with primarily negative or depressive symptoms. This same moderation effect was found on the relationship between interpersonal competence and interpersonal performance, ps < .002. CONCLUSIONS Residual negative and depressive symptoms are distinct constructs that impede the use of functional skills in the real world. Depressive symptoms are often overlooked in schizophrenia but appear to be an important factor that limits the use of functional ability in real world environments.
Collapse
Affiliation(s)
- Michael W Best
- Department of Psychology, Queen's University, Ontario, Canada
| | - Maya Gupta
- Department of Psychology, Queen's University, Ontario, Canada
| | | | - Philip D Harvey
- Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, USA ; Research Service Bruce Carter VA Medical Center, Miami, FL
| |
Collapse
|
10
|
Holshausen K, Bowie CR, Mausbach BT, Patterson TL, Harvey PD. Neurocognition, functional capacity, and functional outcomes: the cost of inexperience. Schizophr Res 2014; 152:430-4. [PMID: 23978775 DOI: 10.1016/j.schres.2013.08.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 08/06/2013] [Accepted: 08/08/2013] [Indexed: 11/15/2022]
Abstract
BACKGROUND Neurocognitive impairments are the strongest predictor of functional deficits in schizophrenia, but adaptive (i.e., functional) capacity, typically measured with performance-based assessments, yields an objective index of current abilities, whereas real-world functional performance relies on observations of community activity. However, limited experiences in the community may limit the acquisition, retention, or expression of these skills. METHODS We examined the frequency of engagement in behaviors that are assessed in the current "gold standard" in person functional capacity assessment. The UCSD Performance-Based Skills Assessment (i.e., UPSA) examines skills associated with recreational engagement, handling money, scheduling appointments, and navigating public transportation. We used neurocognition, experience, and UPSA performance as predictors of the relationships among cognition and real-world functioning variables. RESULTS Neurocognition was a significant correlate of UPSA scores regardless of whether it was forced into the model before or after prior experience, whereas experience was only a significant predictor of UPSA scores when entered before neurocognition. Further, functional capacity, neurocognition, and experience were significant predictors of real-world outcomes and experience remained a significant predictor regardless of the order it was entered into the model. CONCLUSIONS The amount of current experience with functional tasks is not a rate-limiter of the relationships between neurocognition and functional capacity but does account for some previously unexplained variance in the functional capacity-everyday functioning relationship. These findings underscore the importance of neurocognitive deficits as they relate to functional capacity in schizophrenia, and suggest an incremental functional cost of limited experience with independent living.
Collapse
Affiliation(s)
| | | | - Brent T Mausbach
- Department of Psychiatry, University of California San Diego, La Jolla, CA, USA
| | - Thomas L Patterson
- Department of Psychiatry, University of California San Diego, La Jolla, CA, USA
| | - Philip D Harvey
- Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, USA; Research Service, Miami VA Medical Center, USA
| |
Collapse
|
11
|
Gupta M, Holshausen K, Mausbach B, Patterson TL, Bowie CR. Predictors of change in functional competence and functional behavior after functional adaptation skills training for schizophrenia. J Nerv Ment Dis 2012; 200:705-11. [PMID: 22850306 DOI: 10.1097/nmd.0b013e3182613f79] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Functional recovery is an important treatment target in schizophrenia. Although medication is effective at reducing positive symptoms of the disorder, these improvements do not translate to improved functioning. In this study, schizophrenia outpatients (N = 54) received the psychosocial treatment Functional Adaptation Skills Training. Hierarchical regression analyses determined whether baseline neurocognitive, symptom, course of illness, and demographic variables predicted improvement in performance-based measures of functional competence and case manager-rated real-world behavior after the intervention. Consistent with previous research, neurocognition emerged as a predictor of improved competence and behavior. Symptoms played a minor role in predicting change; however, institutionalization history seemed to be an important rate limiter for functional recovery. Correlations among change scores were modest, with evidence for concomitant changes in competence and performance. The predictors of change after psychosocial treatment vary by the domain (e.g., adaptive and interpersonal) of functioning and the level of assessment (e.g., competence and performance).
Collapse
Affiliation(s)
- Maya Gupta
- Queen's University, Kingston, ON, Canada
| | | | | | | | | |
Collapse
|
12
|
Gupta M, Bassett E, Iftene F, Bowie CR. Functional outcomes in schizophrenia: understanding the competence-performance discrepancy. J Psychiatr Res 2012; 46:205-11. [PMID: 21944429 DOI: 10.1016/j.jpsychires.2011.09.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 08/19/2011] [Accepted: 09/01/2011] [Indexed: 11/30/2022]
Abstract
A problem in the study and treatment of functional disability in schizophrenia is that factors other than competence (what one can do) can limit real-world performance (what one does). We examined predictors of the competence-performance discrepancy in both adaptive and interpersonal domains. Patients with schizophrenia (N = 96) were evaluated at baseline of a clinical treatment study. Discrepancy scores were created by considering each subject's competence relative to their real-world performance in interpersonal and adaptive behaviour domains. Logistic regression analyses revealed that for the interpersonal competence-performance discrepancy, living in a group home, better neurocognition, more time spent in the hospital since a first episode of psychosis, and a longer first hospitalization predicted a greater discrepancy between interpersonal competence and performance measures. For adaptive behaviour, shorter time since most recent hospitalization, more depressive symptoms, greater number of months of first hospitalization, older age at baseline, younger age at first hospitalization, and more time spent in the hospital since a first episode of psychosis predicted a greater adaptive competence-performance discrepancy. A different pattern of demographic and clinical features may limit the extent to which patients are deploying interpersonal versus adaptive skills in everyday life.
Collapse
Affiliation(s)
- Maya Gupta
- Department of Psychology, Queen's University, 62 Arch Street, Kingston, ON K7L 3N6, Canada
| | | | | | | |
Collapse
|