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Kolomeets NS, Uranova NA. Deficit of satellite oligodendrocytes of neurons in the rostral part of the head of the caudate nucleus in schizophrenia. Eur Arch Psychiatry Clin Neurosci 2024:10.1007/s00406-024-01869-x. [PMID: 39073446 DOI: 10.1007/s00406-024-01869-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 07/15/2024] [Indexed: 07/30/2024]
Abstract
Increasing evidence implicates compromised myelin integrity and oligodendrocyte abnormalities in the dysfunction of neuronal networks in schizophrenia. We previously reported a deficiency of myelinating oligodendrocytes (OL), oligodendrocyte progenitors (OP) and satellite oligodendrocytes of neurons (Sat-OL) in the prefrontal cortex and the inferior parietal cortex - cortical hubs of the frontoparietal cognitive network and default mode network (DMN) altered in schizophrenia. Deficiency of OL and OP was also detected in the head of the caudate nucleus (HCN), which accumulates cortical projections from the associative cortex and is the central node of these networks. However, the number of Sat-Ol per neuron in schizophrenia has not been studied in the HCN. In the current study we estimated the number of Sat-Ol per neuron in the rostral part of the HCN in schizophrenia (n = 18) compared to healthy controls (n = 18) in the same section collection that was previously used to study the number Ol and OP. We found a significant decrease of the number of Sat-Ol per neuron (- 50%, p < 0.001) in schizophrenia as compared to normal controls. Considering that the rostral part of the HCN is an individual network-specific projection zone of the DMN, the deficit of Sat-Ol found in schizophrenia may be related to the dysfunctional DMN-HCN connections, which has been repeatedly described in schizophrenia. The dramatic decrease of the number of Sat-Ol per neuron may be partially related to a pronounced excess of dopamine concentration in the rostral part of the HCN in schizophrenia.
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Affiliation(s)
- N S Kolomeets
- Laboratory of Clinical Neuropathology, Mental Health Research Center, Kashirskoe shosse 34, Moscow, 115522, Russia
| | - N A Uranova
- Laboratory of Clinical Neuropathology, Mental Health Research Center, Kashirskoe shosse 34, Moscow, 115522, Russia.
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Gebreegziabhere Y, Habatmu K, Cella M, Alem A. Development and Evaluation of a Cognitive Battery for People With Schizophrenia in Ethiopia. Schizophr Bull 2024; 50:931-943. [PMID: 38159078 PMCID: PMC11283194 DOI: 10.1093/schbul/sbad178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
BACKGROUND AND HYPOTHESIS Cognitive difficulties significantly burdened people with schizophrenia (PWS). However, cognitive assessment is often unavailable in low- and middle-income counties (LMICs) due to a lack of validated and culturally adapted cognitive assessment tools. In this study, we developed and evaluated a culturally sensitive cognitive battery for PWS in Ethiopia. STUDY DESIGN This study was conducted in three phases. First, we selected appropriate tests through an instrument selection procedure and created a new battery. Then, we rigorously adapted the tests using culturally competent procedures, including cognitive interviewing and expert meetings. Finally, we tested the new battery in 208 PWS and 208 controls. We evaluated its psychometric properties using advanced statistical techniques, including Item Response Theory (IRT). STUDY RESULTS The Ethiopian Cognitive Assessment battery for Schizophrenia (ECAS) was developed from three different batteries. Participants reported tests were easy to complete, and the raters found them easy to administer. All tests had good inter-rater reliability, and the composite score had very high test-retest reliability (ICC = 0.91). One-factor structure better represented the data with excellent internal consistency (α = .81). ECAS significantly differentiated PWS from controls with 77% sensitivity and 62% specificity at a Z-score ≤0.12 cut-off value. IRT analysis suggested that the battery functions best among moderately impaired participants (difficulty between -0.06 and 0.66). CONCLUSIONS ECAS is a practical, tolerable, reliable, and valid assessment of cognition. ECAS can supplement current assessment tools in LAMICs for PWS and can be used to measure cognitive intervention outcomes.
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Affiliation(s)
- Yohannes Gebreegziabhere
- Department of Nursing, College of Health Sciences, Debre Berhan University, Debre Berhan, Ethiopia
- Department of Psychiatry, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Kassahun Habatmu
- School of Psychology, College of Education and Behavioral Studies, Addis Ababa University, Addis Ababa, Ethiopia
| | - Matteo Cella
- Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, England, UK
| | - Atalay Alem
- Department of Psychiatry, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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Gebreegziabhere Y, Habatmu K, Cella M, Alem A. The Ethiopian Cognitive Assessment battery in Schizophrenia (ECAS): a validation study. SCHIZOPHRENIA (HEIDELBERG, GERMANY) 2024; 10:42. [PMID: 38582925 PMCID: PMC10998832 DOI: 10.1038/s41537-024-00462-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 03/15/2024] [Indexed: 04/08/2024]
Abstract
Cognitive impairment is common in people with schizophrenia (PWS). To detect the presence and its consequences, cognitive measures with sound psychometric properties are needed. However, these are lacking especially in low-income countries. Hence, we developed the Ethiopian Cognitive Assessment battery in Schizophrenia (ECAS). In this study, we evaluated the psychometric properties of the ECAS in a cross-sectional study involving 350 PWS. Confirmatory factor analysis demonstrated a one-factor solution. ECAS score correlated significantly but weakly with a disability measure (r = -0.13, p = 0.02) and symptom dimensions of PANSS (r between -0.12 and -0.29, p < 0.05), except for positive symptoms (r = -0.10, p > 0.05). Years of education (β = 0.12, 95% CI (0.09, 0.14), p < 0.001), male sex (β = 0.22, 95% CI (0.05, 0.39)), age β = -0.02, 95% CI (-0.03, -0.01), and medication side effects (β = -0.03, 95% CI (-0.06, -0.01), p = 0.021) were significantly associated with the composite score of ECAS. The Item Response Theory analysis showed that the tool best functions among participants with moderate cognitive impairment (difficulty coefficient between -1.12 and 0.27). The Differential Item Functioning analyses showed that education had a positive contribution on Digit Symbol Substitution Test (MH OR = 2.64, 95% CI (1.34, 5.20)). The results showed that ECAS is valid in assessing cognition in PWS in low-resource settings.
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Affiliation(s)
- Yohannes Gebreegziabhere
- Department of Psychiatry, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.
- Department of Nursing, College of Health Sciences, Debre Berhan University, Debre Berhan, Ethiopia.
| | - Kassahun Habatmu
- School of Psychology, College of Education and Behavioral Studies, Addis Ababa University, Addis Ababa, Ethiopia
| | - Matteo Cella
- Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, England, UK
| | - Atalay Alem
- Department of Psychiatry, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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Petrescu C, Mihalache OA, Vilciu C, Petrescu DM, Marian G, Ciobanu CA, Ciobanu AM. Clinical and Sociodemographic Correlations with Neurological Soft Signs in Hospitalized Patients with Schizophrenia: A Preliminary Longitudinal Study. Biomedicines 2024; 12:787. [PMID: 38672143 PMCID: PMC11048323 DOI: 10.3390/biomedicines12040787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/19/2024] [Accepted: 04/01/2024] [Indexed: 04/28/2024] Open
Abstract
Schizophrenia is a severe, chronic neuropsychiatric disorder characterized by symptoms that profoundly impact behavior, cognition, perception, and emotions, leading to a reduced quality of life and physical impairment. Given the complexity of schizophrenia, there is a pressing need for clinical markers and tools to predict its course, enhance disease staging, facilitate early intervention, improve differential diagnosis, and tailor individualized treatment approaches. Previous studies focused on the relationship between neurological soft signs (NSS) and factors such as age, illness duration, and symptomatology, indicating NSS as state markers improving in parallel with psychotic symptom remission or predicting treatment resistance. However, there is a lack of consensus on NSS assessment tools, hindering routine clinical monitoring despite diagnostic and prognostic potential. The present longitudinal study involved 81 psychiatric inpatients diagnosed with schizophrenia. Patients were assessed at three time points: baseline, 1 month, and 6 months. The examination included the use of scales to evaluate psychotic and neurological symptoms, as well as the identification of adverse extrapyramidal reactions caused by neuroleptic treatment. The progression of NSS was correlated to both the symptomatology and the sociodemographic data of the patients. The main findings from the present investigation revealed a statistical correlation between NSS and psychopathological symptoms, especially with negative symptoms of schizophrenia. However, it is important to note that neuroleptic side effects only had a limited impact on NSS. Therefore, instead of being linked to extrapyramidal symptoms caused by neuroleptics, NSS appears to be more frequently related with symptoms of schizophrenia. Our findings provide further support for their strong association with the course of schizophrenia, independent of treatment side effects, thus emphasizing their potential as reliable assessment tools in both research and clinical settings.
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Affiliation(s)
- Cristian Petrescu
- Neuroscience Department, Discipline of Psychiatry, Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania;
- Department of Psychiatry, ‘Prof. Dr. Alexandru Obregia’ Clinical Hospital of Psychiatry, 041914 Bucharest, Romania
| | - Oana A. Mihalache
- Department of Doctoral Studies, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania;
- Department of Neurology, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.V.); (D.M.P.)
| | - Crisanda Vilciu
- Department of Neurology, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.V.); (D.M.P.)
- Neurology Clinic, ‘Fundeni’ Clinical Institute, 022328 Bucharest, Romania
| | - Diana M. Petrescu
- Department of Neurology, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.V.); (D.M.P.)
- Neurology Clinic, ‘Fundeni’ Clinical Institute, 022328 Bucharest, Romania
| | - Gabriela Marian
- Academy of Romanian Scientists, 927180 Bucharest, Romania;
- Department of Psychiatry and Psychology, ‘Titu Maiorescu’ University of Medicine, 040051 Bucharest, Romania
| | - Constantin A. Ciobanu
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 020022 Bucharest, Romania
| | - Adela M. Ciobanu
- Neuroscience Department, Discipline of Psychiatry, Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania;
- Department of Psychiatry, ‘Prof. Dr. Alexandru Obregia’ Clinical Hospital of Psychiatry, 041914 Bucharest, Romania
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Lim K, Yee JY, See YM, Ng BT, Zheng S, Tang C, Lencz T, Lee J, Lam M. Deconstructing the genetic architecture of treatment-resistant schizophrenia in East Asian ancestry. Asian J Psychiatr 2023; 90:103826. [PMID: 37944474 DOI: 10.1016/j.ajp.2023.103826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/29/2023] [Accepted: 10/31/2023] [Indexed: 11/12/2023]
Abstract
BACKGROUND Treatment-resistant schizophrenia (TRS) affects a substantial proportion of patients who do not respond adequately to antipsychotic medications, yet the underlying biological mechanism remains poorly understood. This study investigates the link between the genetic predisposition to schizophrenia and TRS. METHODS 857 individuals diagnosed with schizophrenia were divided into TRS (n = 142) and non-TRS (n = 715) based on well-defined TRS criteria. Polygenic risk scores (PRS) were calculated using schizophrenia genome-wide association summary statistics from East-Asian and European ancestry populations. PRS was estimated using both P-value thresholding and Bayesian framework methods. Logistic regression analyses were performed to differentiate between TRS and non-TRS individuals. RESULTS The schizophrenia PRS derived from the East-Asian training dataset effectively distinguished between TRS and non-TRS individuals (R2 = 0.029, p = 4.86 ×10-5, pT = 0.1, OR = 1.52, 95% CI = 1.242-1.861), with higher PRS values observed in the TRS group. Similar PRS analysis was conducted based on the European ancestry GWAS summary statistics, but we found superior prediction based on the East-Asian ancestry discovery data. CONCLUSION This study reveals an association between common risk variants for schizophrenia and TRS status, suggesting that the genetic burden of schizophrenia may partly contribute to treatment resistance in individuals with schizophrenia. These findings propose the potential use of genetic risk factors for early TRS identification and timely access to clozapine. However, the ancestral background of the discovery sample is crucial for successfully implementing PRS in clinical settings.
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Affiliation(s)
- Keane Lim
- Research Division, Institute of Mental Health, Singapore
| | - Jie Yin Yee
- Research Division, Institute of Mental Health, Singapore
| | - Yuen Mei See
- Research Division, Institute of Mental Health, Singapore
| | - Boon Tat Ng
- Department of Pharmacy, Institute of Mental Health, Singapore
| | - Shushan Zheng
- Department of Psychosis, Institute of Mental Health, Singapore
| | - Charmaine Tang
- Department of Psychosis, Institute of Mental Health, Singapore
| | - Todd Lencz
- Feinstein Institutes for Medical Research, NY, USA
| | - Jimmy Lee
- Department of Psychosis, Institute of Mental Health, Singapore; Population and Global Health, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.
| | - Max Lam
- Research Division, Institute of Mental Health, Singapore; Feinstein Institutes for Medical Research, NY, USA; Population and Global Health, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.
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Gebreegziabhere Y, Habatmu K, Cella M, Alem A. Introducing an interview-based cognitive assessment tool for people with Schizophrenia in Ethiopia. Psychiatry Res 2023; 328:115474. [PMID: 37738683 DOI: 10.1016/j.psychres.2023.115474] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/01/2023] [Accepted: 09/08/2023] [Indexed: 09/24/2023]
Abstract
Assessment of cognitive impairment in people with schizophrenia (PWS) is limited in low and middle-income countries due to lack of context-appropriate measures. This study aimed to select, adapt, and evaluate an interview-based cognitive tool for PWS in Ethiopia. The study was carried out in three phases. In the first phase, we followed a rigorous instrument selection procedure to select a tool for adaptation. We then applied a rigorous instrument adaption procedure, including interviews with 24 participants. Finally, we evaluated the psychometric properties of the adapted tool with 208 PWS and 208 matched controls. The Cognitive Assessment Interview was selected as the appropriate tool for adaptation. This tool is practical and tolerable, with short time of administration. We reported high inter-rater reliability and test-retest reliability for the adapted scale. One-factor structure better represented the data with excellent internal consistency. Weak but significant correlation with a performance-based battery was reported. At a cut-off value of > 13, the tool significantly differentiated PWS from controls (62 % sensitivity and 82 % specificity). Item Response Theory-based analysis showed that the tool gives much information among severely impaired participants. The findings show that the tool is reliable, valid, and practical in resource-scarce settings.
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Affiliation(s)
- Yohannes Gebreegziabhere
- Department of Nursing, College of Health Sciences, Debre Berhan University, Debre Berhan, Ethiopia; Department of Psychiatry, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.
| | - Kassahun Habatmu
- School of Psychology, College of Education and Behavioral Studies, Addis Ababa University, Addis Ababa, Ethiopia
| | - Matteo Cella
- Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, England, United Kingdom
| | - Atalay Alem
- Department of Psychiatry, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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Yu CL, Carvalho AF, Thompson T, Tsai TC, Tseng PT, Hsu CW, Hsu TW, Liang CS. Comparison of antipsychotic dose equivalents for acute bipolar mania and schizophrenia. BMJ MENTAL HEALTH 2023; 26:e300546. [PMID: 36789916 PMCID: PMC10035777 DOI: 10.1136/bmjment-2022-300546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 12/01/2022] [Indexed: 02/10/2023]
Abstract
QUESTION Are antipsychotic dose equivalents between acute mania and schizophrenia the same? STUDY SELECTION AND ANALYSIS Six databases were systematically searched (from inception to 17 September 2022) to identify blinded randomised controlled trials (RCTs) that used a flexible-dose oral antipsychotic drug for patients with acute mania. The mean and SD of the effective dose and the pre-post changes in manic symptoms were extracted. A network meta-analysis (NMA) under a frequentist framework was performed to examine the comparative efficacy between the antipsychotics. A classic mean dose method (sample size weighted) was used to calculate each antipsychotic dose equivalent to 1 mg/day olanzapine for acute mania. The antipsychotic dose equivalents of acute mania were compared with published data for schizophrenia. FINDINGS We included 42 RCTs which enrolled 11 396 participants with acute mania. The NMA showed that risperidone was superior to olanzapine (reported standardised mean difference: -022, 95% CI -0.41 to -0.02), while brexpiprazole was inferior to olanzapine (standardised mean difference: 0.36, 95% CI 0.08 to 0.64). The dose equivalents to olanzapine (with SD) were 0.68 (0.23) for haloperidol, 0.32 (0.07) for risperidone, 0.60 (0.11) for paliperidone, 8.00 (1.41) for ziprasidone, 41.46 (5.98) for quetiapine, 1.65 (0.32) for aripiprazole, 1.23 (0.20) for asenapine, 0.53 (0.14) for cariprazine and 0.22 (0.03) for brexpiprazole. Compared with the olanzapine dose equivalents for schizophrenia, those of acute mania were higher for quetiapine (p<0.001, 28.5%) and aripiprazole (p<0.001, 17.0%), but lower for haloperidol (p<0.001, -8.1%) and risperidone (p<0.001, -15.8%). CONCLUSIONS Antipsychotic drugs have been considered first-line treatment for acute mania, warranting specific dose equivalence for scientific and clinical purposes.
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Affiliation(s)
- Chia-Ling Yu
- Department of Pharmacy, Chang Gung Memorial Hospital Linkou, Taipei, Taiwan
| | - Andre F Carvalho
- IMPACT (Innovation in Mental and Physical Health and Clinical Treatment) Strategic Research Centre, School of Medicine, Deakin University, Geelong, VIC, Australia
| | - Trevor Thompson
- Centre for Chronic Illness and Ageing, University of Greenwich, London, UK
| | - Tzu-Cheng Tsai
- Department of Pharmacy, Chang Gung Memorial Hospital Linkou, Taipei, Taiwan
| | - Ping-Tao Tseng
- Prospect Clinic for Otorhinolaryngology & Neurology, Kaohsiung City, Taiwan
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
- Department of Psychology, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Chih-Wei Hsu
- Deaparment of Psychiatry, Chang Gung Memorial Hospital Kaohsiung Branch, Kaohsiung, Taiwan
| | - Tien-Wei Hsu
- Department of Psychiatry, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Chih-Sung Liang
- Department of Psychiatry, National Defense Medical Center, Taipei, Taiwan
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Kolomeets NS, Uranova NA. [Reduced numerical density of oligodendrocytes and oligodendrocyte clusters in the head of the caudate nucleus in schizophrenia]. Zh Nevrol Psikhiatr Im S S Korsakova 2023; 123:103-110. [PMID: 36719125 DOI: 10.17116/jnevro2023123011103] [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: 02/01/2023]
Abstract
OBJECTIVE Morphometric estimation of the numerical density of oligodendrocytes (NcOl) and numerical density of oligodendrocyte clusters (NvOlC) in the rostral part of the caudate head nucleus associated with the cortical regions of the default network in the norm and in schizophrenia. MATERIAL AND METHODS NcOl and NvOlC were determined in the gray matter of the rostral part of the head of the caudate nucleus in Nissl-stained sections using optical dissector in postmortem brains in 18 schizophrenia and 18 healthy control cases. RESULTS The NvOl (-20%, p<0.001) and NvOlC (-28%, p<0.001) were decreased in the schizophrenia group as compared to the control groups. The NvOl correlated with the NvOlC (R≥0.88, p<0.001) in both groups while a lack of correlations was previously found in the central part of the caudate head. CONCLUSION The detected deficits of the NcOl and NvOlC is an agreement with prominent suppressing of cortico-striatal connections and reduced density of gray matter in this part of the caudate in schizophrenia. The differences in the pattern of correlations as compared to the central part of this structure might be associated with the specific features of functional activity of default-mode and fronto-parietal networks associated with these parts of caudate nucleus.
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Affiliation(s)
- N S Kolomeets
- Federal State Budgetary Scientific Institution Mental Health Research Center, Moscow, Russia
| | - N A Uranova
- Federal State Budgetary Scientific Institution Mental Health Research Center, Moscow, Russia
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The Impact of Antipsychotic Treatment on Neurological Soft Signs in Patients with Predominantly Negative Symptoms of Schizophrenia. Biomedicines 2022; 10:biomedicines10112939. [PMID: 36428507 PMCID: PMC9687986 DOI: 10.3390/biomedicines10112939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/07/2022] [Accepted: 11/11/2022] [Indexed: 11/17/2022] Open
Abstract
Schizophrenia is a complex and incompletely elucidated pathology that affects sensorimotor function and also produces numerous therapeutic challenges. The aims of this cross-sectional study were to identify the profile of neurological soft signs (NSS) in patients with predominantly negative symptoms of schizophrenia (PNS) compared with patients with schizophrenia who do not present a predominance of negative symptoms (NPNS) and also to objectify the impact of treatment on the neurological function of these patients. Ninety-nine (n = 99; 56 females and 43 males) patients diagnosed with schizophrenia according to DSM-V were included; these patients were undergoing antipsychotic (4 typical antipsychotics, 86 atypical antipsychotics, and 9 combinations of two atypical antipsychotics) or anticholinergic treatment (24 out of 99) at the time of evaluation, and the PANSS was used to identify the patients with predominantly negative symptoms (n = 39), the Neurological Evaluation Scale (NES) was used for the evaluation of neurological soft signs (NSS), and the SAS was used for the objectification of the extrapyramidal side effects induced by the neuroleptic treatment, which was converted to chlorpromazine equivalents (CPZE). The study's main finding was that, although the daily dose of CPZE did not represent a statistically significant variable, in terms of neurological soft signs, patients with PNS had higher rates of NSS.
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Reduced number of satellite oligodendrocytes of pyramidal neurons in layer 5 of the prefrontal cortex in schizophrenia. Eur Arch Psychiatry Clin Neurosci 2022; 272:947-955. [PMID: 34822006 DOI: 10.1007/s00406-021-01353-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 11/08/2021] [Indexed: 12/25/2022]
Abstract
Neuroimaging, genetic and molecular biological studies have shown impaired intra-cortical myelination in patients with schizophrenia, particularly in the prefrontal cortex. Previously we reported a significant deficit of oligodendrocytes and oligodendrocyte clusters in layers 3 and 5 of the prefrontal cortex, Brodmann area 10 (BA10) in schizophrenia. In this current study, we investigate the number of oligodendrocyte satellites (Sat-Ol) per pyramidal neuron in layer 5 of BA10 in schizophrenia (n = 17) as compared to healthy controls (n = 20) in the same section collection as previously used to study the numerical density (Nv) of oligodendrocytes and oligodendrocyte clusters. We find a significant reduction (- 39%, p < 0.001) in the number of Sat-Ol per neuron in schizophrenia as compared to the control group. The number of Sat-Ol per neuron did not correlate with the Nv of oligodendrocytes or with the Nv of oligodendrocyte clusters. Our previous studies of the inferior parietal lobule (BA39 and BA40), demonstrated significant decrease of the number of Sat-Ol only in patient subgroups with poor and fair insight. Additionally, correlation pattern between number of Sat-Ol and Nv of oligodendrocytes and oligodendrocyte clusters was similar between the two functionally interconnected cortical areas, BA10 and BA40, whereas in BA39, strong significant correlations were revealed between the number of Sat-Ol and Nv of oligodendrocyte clusters (0.9 ≤ R ≥ 0.66; p < 0.001). These data suggest that that specific features of Sat-Ol alterations patterns may be associated with specific activity-driven plasticity of corresponding networks in the brain of people with schizophrenia.
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Metabolic syndrome and cardiovascular risk between clozapine and non-clozapine antipsychotic users with schizophrenia. Asian J Psychiatr 2022; 74:103192. [PMID: 35751958 DOI: 10.1016/j.ajp.2022.103192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 05/16/2022] [Accepted: 06/14/2022] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Clozapine use is associated with higher risks of metabolic side effects and cardiovascular diseases (CVD). Thus, this study aims to establish and compare the cardiometabolic profiles between non-clozapine antipsychotic and clozapine users with schizophrenia. METHODS Data from 88 non-clozapine and 166 clozapine users were extracted from existing databases - demographics, medications, smoking and medical histories, anthropometric parameters, serum lipid and fasting glucose levels. Prevalence of metabolic syndrome (MetS) was established using the AHA/NHLBI criteria. Cardiovascular risk profiles were established using the Framingham risk score (FRS). RESULTS The clozapine group had significantly higher proportions of diagnosed hypertension (10.8 % vs. 3.4 %, p = 0.041), diabetes mellitus (15.7 % vs. 3.4 %, p = 0.003) and dyslipidemia (36.7 % vs. 12.5 %, p < 0.001). However, the non-clozapine antipsychotic group had poorer anthropometric, serum lipids and glucose levels. The prevalence rates of MetS in the clozapine and non-clozapine antipsychotic groups were not statistically significant at 42.8 % and 43.2 %, respectively. As for CVD risk, the non-clozapine antipsychotic group had significantly higher FRS (6.59 % vs. 6.12 %, p = 0.001). CONCLUSION Although clozapine users had higher rates of diagnosed metabolic conditions, other cardiometabolic parameters appeared better compared to non-clozapine antipsychotic users, which could be due to greater awareness, earlier detection and treatment. Regardless of the type of antipsychotic used, metabolic abnormalities are prevalent in individuals with schizophrenia; physical healthcare should be prioritised alongside mental healthcare in this group.
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Lin SK, Yang SY, Park SC, Jang OJ, Zhu X, Xiang YT, Ouyang WC, Javed A, Khan MNS, Grover S, Avasthi A, Kallivayalil RA, Chee KY, Chemi N, Kato TA, Hayakawa K, Pariwatcharakul P, Maramis M, Seneviratne L, Kang S, Tang WK, Oo T, Sartorius N, Tan CH, Chong MY, Park YC, Shinfuku N. Prescription Patterns for Bipolar Disorder in Asian Countries: Findings from Research on Asian Prescription Pattern-Bipolar Disorder. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2022; 20:61-69. [PMID: 35078949 PMCID: PMC8813322 DOI: 10.9758/cpn.2022.20.1.61] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/25/2020] [Accepted: 12/26/2020] [Indexed: 12/29/2022]
Abstract
Objective Pharmacotherapy including mood stabilizers and antipsychotics are frequently used in bipolar disorder (BD); however, the lack of consensus regarding the definition of polypharmacy hinders conducting comparative studies across different settings and countries. Research on Asian Prescription Pattern (REAP) is the largest and the longest lasting international collaborative research in psychiatry in Asia. The objective of REAP BD was to investigate the prescription patterns of psychotropic medications across Asian countries. The rates of polypharmacy and psychotropic drug load were also analyzed. Methods The data collection was web-based. Prescription patterns were categorized as (1) mood stabilizer monotherapy: one mood stabilizer; (2) antipsychotic monotherapy: one antipsychotic; (3) simple polypharmacy: one mood stabilizer and one antipsychotic; and (4) complex polypharmacy: ≥ 2 mood stabilizers or/and antipsychotics. The psychotropic drug load in each patient was calculated using the defined daily dose method. Results Among 2003 patients with BD (52.1% female, 42.4 years) from 12 countries, 1,619 (80.8%) patients received mood stabilizers, 1,644 (82.14%) received antipsychotics, and 424 (21.2%) received antidepressants, with 14.7% mood stabilizer monotherapy, 13.4% antipsychotic monotherapy, 48.9% simple polypharmacy, 20.3% complex polypharmacy, and 2.6% other therapy. The average psychotropic drug load was 2.05 ± 1.40. Results varied widely between countries. Conclusion Over 70% of psychotropic regimens involved polypharmacy, which accords with the high prevalence of polypharmacy in BD under a permissive criterion (2 or more core psychotropic drugs) worldwide. Notably, ≥ 80% of our sample received antipsychotics, which may indicate an increasing trend in antipsychotic use for BD treatment.
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Affiliation(s)
- Shih-Ku Lin
- Department of Psychiatry, Taipei City Hospital and Psychiatric Center, Taipei, Taiwan
- Department of Psychiatry, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Shu-Yu Yang
- Department of Pharmacy, Taipei City Hospital, Taipei, Taiwan
| | - Seon-Cheol Park
- Department of Neuropsychiatry, Hanyang University Guri Hospital, Guri, Korea
| | - Ok-Jin Jang
- Department of Psychiatry, Bugok National Hospital, Changyeong, Korea
| | - Xiaomin Zhu
- Department of Psychiatry, Suzhou Guangji Hospital, the Affiliated Guangji Hospital of Soochow University, Suzhou, China
| | - Yu-Tao Xiang
- Department of Psychiatry, Beijing Anding Hospital of Capital Medical University, Beijing, China
- Unit of Psychiatry, Faculty of Health Sciences, University of Macau, Macao SAR, China
| | - Wen-Chen Ouyang
- Department of Geriatric Psychiatry, Jianan Psychiatric Center, Tainan, Taiwan
- Department of Psychiatry, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Nursing, Shu-Zen Junior College of Medicine and Management, Kaohsiung, Taiwan
| | - Afzal Javed
- Pakistan Psychiatric Research Centre, Fountain House, Lahore, Pakistan
| | | | - Sandeep Grover
- Department of Psychiatry, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Ajit Avasthi
- Department of Psychiatry, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | | | - Kok Yoon Chee
- Department of Psychiatry & Mental Health, Tunku Abdul Rahman Institute of Neurosciences, Kuala Lumpur Hospital, Kuala Lumpur, Malaysia
| | - Norliza Chemi
- Department of Psychiatry and Mental Health, Hospital Kajang, Selangor, Malaysia
| | - Takahiro A. Kato
- Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kohei Hayakawa
- Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | - Margarita Maramis
- Department of Psychiatry, Dr. Soetomo Hospital - Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - Lakmi Seneviratne
- Department of Psychiatry, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - Sim Kang
- Institute of Mental Health, Buangkok Green Medical Park, Singapore
| | - Wai Kwong Tang
- Department of Psychiatry, Chinese University of Hong Kong, Hong Kong, China
| | - Tin Oo
- Mental Health Hospital, Yangon University of Medicine, Yangon, Myanmar
| | - Norman Sartorius
- Association for the Improvement of Mental Health Programs, Geneva, Switzerland
| | - Chay-Hoon Tan
- Department of Pharmacology, National University of Singapore, Singapore
| | - Mian-Yoon Chong
- Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung & Chang Gung University School of Medicine, Linkou, Taiwan
| | - Yong Chon Park
- Department of Neuropsychiatry, Hanyang University Guri Hospital, Guri, Korea
| | - Naotaka Shinfuku
- School of Human Sciences, Seinan Gakuin University, Fukuoka, Japan
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13
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Leucht S, Bauer S, Siafis S, Hamza T, Wu H, Schneider-Thoma J, Salanti G, Davis JM. Examination of Dosing of Antipsychotic Drugs for Relapse Prevention in Patients With Stable Schizophrenia: A Meta-analysis. JAMA Psychiatry 2021; 78:1238-1248. [PMID: 34406325 PMCID: PMC8374744 DOI: 10.1001/jamapsychiatry.2021.2130] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 06/16/2021] [Indexed: 12/13/2022]
Abstract
Importance The doses of antipsychotic drugs needed for relapse prevention in schizophrenia is a debated issue. Objective To examine dose-response findings in a meta-analysis of randomized clinical trials. Data Sources Studies were identified through the Cochrane Schizophrenia Group's Study-Based Register of Trials (March 9, 2020), PubMed (January 1, 2021), and previous reviews. First authors and/or pharmaceutical companies were contacted for additional information. Study Selection Two reviewers independently selected randomized clinical trials that compared fixed doses of a second-generation antipsychotic, haloperidol, or fluphenazine for relapse prevention in patients with stable schizophrenia. Data Extraction and Synthesis Using the Preferred Reporting Items for Systematic Reviews and Meta-analyses guideline, all parameters in duplicate were extracted and frequentist dose-response random-effects meta-analyses were conducted. Main Outcomes and Measures Study-defined relapse (primary outcome), rehospitalization, Positive and Negative Syndrome Scale or Brief Psychiatric Rating Scale total score reduction from baseline, all-cause discontinuation, and dropouts due to adverse events. Results Evidence from 72 dose arms from 26 studies with 4776 participants was analyzed. The efficacy-related dose-response curves had a hyperbolic shape meaning that the probability to relapse decreased rapidly with doses of up to 5-mg/d risperidone equivalent (relative relapse risk, 0.43; 95% CI, 0.31-0.57; standardized mean difference for Positive and Negative Syndrome Scale total score reduction, -0.55; 95% CI, -0.68 to -0.41), but flattened thereafter. In contrast, dropouts due to adverse events continued to increase beyond this dose (relative risk at 5 mg/d, 1.38; 95% CI, 0.87-2.55; relative risk at 15 mg/d, 2.68; 95% CI, 1.49-4.62). In a subgroup analysis of patients in remission, a plateau was reached earlier, at approximately 2.5-mg/d risperidone equivalent. Conclusions and Relevance The findings of this meta-analysis suggest that doses higher than approximately 5-mg/d risperidone equivalent may provide limited additional benefit for relapse prevention but more adverse events. For patients in remission or who are receiving high-potency first-generation antipsychotics, doses as low as 2.5-mg/d risperidone equivalent may be sufficient. However, caution is needed at this low dose end when further decreases of dose may be accompanied by a disproportionally higher relapse risk. Moreover, the observations are averages, and factors such as slow or rapid metabolism, age, illness stage, comorbidities, and drug-drug interactions suggest that individual patients will often need higher or lower doses.
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Affiliation(s)
- Stefan Leucht
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich, Germany
- Institute of Psychiatry, Psychology and Neuroscience, Department of Psychiatry, Department of Psychosis Studies, King’s College London, London, United Kingdom
| | - Sofia Bauer
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich, Germany
- Ludwig-Maximilians-Universität München, Munich, Germany
| | - Spyridon Siafis
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich, Germany
| | - Tasnim Hamza
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Hui Wu
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich, Germany
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Johannes Schneider-Thoma
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich, Germany
| | - Georgia Salanti
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - John M. Davis
- Psychiatric Institute, University of Illinois at Chicago
- Department of Psychiatry, Johns Hopkins University, Baltimore, Maryland
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14
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The Effect of Therapeutic Alliance on Attitudes Toward Psychiatric Medications in Schizophrenia. J Clin Psychopharmacol 2021; 41:551-560. [PMID: 34411007 DOI: 10.1097/jcp.0000000000001449] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
PURPOSE/BACKGROUND The differential influence of therapeutic alliance with different health care professionals on patients' medication adherence has never been examined. METHODS/PROCEDURES Ninety-five stable outpatients (91 patients with schizophrenia and 4 patients with schizoaffective disorder) were recruited. Individual, clinical, and medication factors were assessed, along with drug attitude (10-item Drug Attitude Inventory). Comparison on these factors was made between outpatients who identified psychiatrists as the health care professional most involved in their care, as compared with other health care professionals. FINDINGS/RESULTS Older age, longer duration of illness, presence of medical comorbidities, lower levels of internalized stigma, higher levels of insight, higher levels of functioning, lesser severity of depressive symptoms, and positive symptoms were found to be significantly associated with greater levels of drug attitude (small to moderate associations). Only therapeutic alliance had a large correlation with drug attitude (ρ = 0.503, P < 0.001). The therapeutic alliance scores between the 2 health care professionals groups are not significantly different. However, participants who have identified psychiatrists as the health care professional that contributed the most to their recovery reported a significantly more positive attitude (μ = 6.18, SD = 3.42) toward psychiatric medication as compared with the other health care professionals group (μ = 3.11, SD = 5.32, P = 0.004). Only 2 factors, the Revised Helping Alliance Questionnaire (β = 0.424, P < 0.001) and Personal and Social Performance scale (β = 0.272, P = 0.006), were statistically significant predictors of drug attitude. IMPLICATIONS/CONCLUSIONS Therapeutic alliance is found to be the lead factor associated with drug attitude in patients with schizophrenia. Identifying psychiatrists as the health care professional most involved in the patients' recovery can greatly increase patients' drug attitudes. Maintaining individuals' functioning also contributes to drug attitude.
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Abstract
Cognitive dysfunction is a core feature of schizophrenia. The subtyping of cognitive performance in schizophrenia may aid the refinement of disease heterogeneity. The literature on cognitive subtyping in schizophrenia, however, is limited by variable methodologies and neuropsychological tasks, lack of validation, and paucity of studies examining longitudinal stability of profiles. It is also unclear if cognitive profiles represent a single linear severity continuum or unique cognitive subtypes. Cognitive performance measured with the Brief Assessment of Cognition in Schizophrenia was analyzed in schizophrenia patients (n = 767). Healthy controls (n = 1012) were included as reference group. Latent profile analysis was performed in a schizophrenia discovery cohort (n = 659) and replicated in an independent cohort (n = 108). Longitudinal stability of cognitive profiles was evaluated with latent transition analysis in a 10-week follow-up cohort. Confirmatory factor analysis (CFA) was carried out to investigate if cognitive profiles represent a unidimensional structure. A 4-profile solution was obtained from the discovery cohort and replicated in an independent cohort. It comprised of a "less-impaired" cognitive subtype, 2 subtypes with "intermediate cognitive impairment" differentiated by executive function performance, and a "globally impaired" cognitive subtype. This solution showed relative stability across time. CFA revealed that cognitive profiles are better explained by distinct meaningful profiles than a severity linear continuum. Associations between profiles and negative symptoms were observed. The subtyping of schizophrenia patients based on cognitive performance and its associations with symptomatology may aid phenotype refinement, mapping of specific biological mechanisms, and tailored clinical treatments.
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Affiliation(s)
- Keane Lim
- Research Division, Institute of Mental Health, Singapore, Singapore
| | - Jason Smucny
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, CA
| | - Deanna M Barch
- Department of Psychological and Brain Sciences, Psychiatry, and Radiology, Washington University in St. Louis, St. Louis, MO
| | - Max Lam
- Research Division, Institute of Mental Health, Singapore, Singapore
- Feinstein Institute of Medical Research, The Zucker Hillside Hospital, New York, NY
- Stanley Center for Psychiatric Research, The Broad Institute of MIT and Harvard, Cambridge, MA
| | - Richard S E Keefe
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC
| | - Jimmy Lee
- Research Division, Institute of Mental Health, Singapore, Singapore
- Department of Psychosis, Institute of Mental Health, Singapore, Singapore
- Neuroscience and Mental Health, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
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16
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Ceraso A, Lin JJ, Schneider-Thoma J, Siafis S, Tardy M, Komossa K, Heres S, Kissling W, Davis JM, Leucht S. Maintenance treatment with antipsychotic drugs for schizophrenia. Cochrane Database Syst Rev 2020; 8:CD008016. [PMID: 32840872 PMCID: PMC9702459 DOI: 10.1002/14651858.cd008016.pub3] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND The symptoms and signs of schizophrenia have been linked to high levels of dopamine in specific areas of the brain (limbic system). Antipsychotic drugs block the transmission of dopamine in the brain and reduce the acute symptoms of the disorder. An original version of the current review, published in 2012, examined whether antipsychotic drugs are also effective for relapse prevention. This is the updated version of the aforesaid review. OBJECTIVES To review the effects of maintaining antipsychotic drugs for people with schizophrenia compared to withdrawing these agents. SEARCH METHODS We searched the Cochrane Schizophrenia Group's Study-Based Register of Trials including the registries of clinical trials (12 November 2008, 10 October 2017, 3 July 2018, 11 September 2019). SELECTION CRITERIA We included all randomised trials comparing maintenance treatment with antipsychotic drugs and placebo for people with schizophrenia or schizophrenia-like psychoses. DATA COLLECTION AND ANALYSIS We extracted data independently. For dichotomous data we calculated risk ratios (RR) and their 95% confidence intervals (CIs) on an intention-to-treat basis based on a random-effects model. For continuous data, we calculated mean differences (MD) or standardised mean differences (SMD), again based on a random-effects model. MAIN RESULTS The review currently includes 75 randomised controlled trials (RCTs) involving 9145 participants comparing antipsychotic medication with placebo. The trials were published from 1959 to 2017 and their size ranged between 14 and 420 participants. In many studies the methods of randomisation, allocation and blinding were poorly reported. However, restricting the analysis to studies at low risk of bias gave similar results. Although this and other potential sources of bias limited the overall quality, the efficacy of antipsychotic drugs for maintenance treatment in schizophrenia was clear. Antipsychotic drugs were more effective than placebo in preventing relapse at seven to 12 months (primary outcome; drug 24% versus placebo 61%, 30 RCTs, n = 4249, RR 0.38, 95% CI 0.32 to 0.45, number needed to treat for an additional beneficial outcome (NNTB) 3, 95% CI 2 to 3; high-certainty evidence). Hospitalisation was also reduced, however, the baseline risk was lower (drug 7% versus placebo 18%, 21 RCTs, n = 3558, RR 0.43, 95% CI 0.32 to 0.57, NNTB 8, 95% CI 6 to 14; high-certainty evidence). More participants in the placebo group than in the antipsychotic drug group left the studies early due to any reason (at seven to 12 months: drug 36% versus placebo 62%, 24 RCTs, n = 3951, RR 0.56, 95% CI 0.48 to 0.65, NNTB 4, 95% CI 3 to 5; high-certainty evidence) and due to inefficacy of treatment (at seven to 12 months: drug 18% versus placebo 46%, 24 RCTs, n = 3951, RR 0.37, 95% CI 0.31 to 0.44, NNTB 3, 95% CI 3 to 4). Quality of life might be better in drug-treated participants (7 RCTs, n = 1573 SMD -0.32, 95% CI to -0.57 to -0.07; low-certainty evidence); probably the same for social functioning (15 RCTs, n = 3588, SMD -0.43, 95% CI -0.53 to -0.34; moderate-certainty evidence). Underpowered data revealed no evidence of a difference between groups for the outcome 'Death due to suicide' (drug 0.04% versus placebo 0.1%, 19 RCTs, n = 4634, RR 0.60, 95% CI 0.12 to 2.97,low-certainty evidence) and for the number of participants in employment (at 9 to 15 months, drug 39% versus placebo 34%, 3 RCTs, n = 593, RR 1.08, 95% CI 0.82 to 1.41, low certainty evidence). Antipsychotic drugs (as a group and irrespective of duration) were associated with more participants experiencing movement disorders (e.g. at least one movement disorder: drug 14% versus placebo 8%, 29 RCTs, n = 5276, RR 1.52, 95% CI 1.25 to 1.85, number needed to treat for an additional harmful outcome (NNTH) 20, 95% CI 14 to 50), sedation (drug 8% versus placebo 5%, 18 RCTs, n = 4078, RR 1.52, 95% CI 1.24 to 1.86, NNTH 50, 95% CI not significant), and weight gain (drug 9% versus placebo 6%, 19 RCTs, n = 4767, RR 1.69, 95% CI 1.21 to 2.35, NNTH 25, 95% CI 20 to 50). AUTHORS' CONCLUSIONS For people with schizophrenia, the evidence suggests that maintenance on antipsychotic drugs prevents relapse to a much greater extent than placebo for approximately up to two years of follow-up. This effect must be weighed against the adverse effects of antipsychotic drugs. Future studies should better clarify the long-term morbidity and mortality associated with these drugs.
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Affiliation(s)
- Anna Ceraso
- Department of Clinical and Experimental Sciences, Section of Psychiatry, University of Brescia, Brescia, Italy
| | - Jessie Jingxia Lin
- School of Nursing, The University of Hong Kong, Hong Kong SAR, Hong Kong
| | - Johannes Schneider-Thoma
- Department of Psychiatry and Psychotherapy, School of Medicine, Technical University of Munich, Munich, Germany
| | - Spyridon Siafis
- Department of Psychiatry and Psychotherapy, School of Medicine, Technical University of Munich, Munich, Germany
| | - Magdolna Tardy
- Klinik und Poliklinik für Psychiatrie und Psychotherapie, Technische Universität München Klinikum rechts der Isar, München, Germany
| | - Katja Komossa
- Department of Psychiatry (UPK), University of Basel, Basel, Switzerland
| | | | - Werner Kissling
- Department of Psychiatry and Psychotherapy, School of Medicine, Technical University of Munich, Munich, Germany
| | - John M Davis
- Maryland Psychiatric Research Center, Baltimore, MD, USA
| | - Stefan Leucht
- Department of Psychiatry and Psychotherapy, School of Medicine, Munich, Germany
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Qiu J, Gong H, Wang B, Gu W, Wang L, Gu M, Zhang Y, Du X. The use of clozapine is protective for low bone mineral density induced by prolactin-raising antipsychotics in inpatients with schizophrenia. Arch Osteoporos 2020; 15:98. [PMID: 32601884 DOI: 10.1007/s11657-020-00771-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 06/09/2020] [Indexed: 02/03/2023]
Abstract
UNLABELLED Low bone mineral density (BMD) is common among patients with schizophrenia; however, the pathogenesis is still unclear. Different types of antipsychotics may have different effects on BMD in inpatients with schizophrenia. INTRODUCTION This retrospective study aimed to evaluate the effects of prolactin-raising (PR) antipsychotics vs. clozapine combined with PR antipsychotics on BMD of patients with schizophrenia and analyzed clinically related factors that may affect BMD. METHODS A total of 125 participants (males/females = 62/63) were included. Patients were treated with PR antipsychotics vs. clozapine combined with PR antipsychotics. They were similar in demographic and clinical characteristics. BMD was examined in their lumbar spine and proximal femur by a dual-energy X-ray (DEXA) absorption measurement device. Laboratory variables (including blood levels of prolactin, estradiol, testosterone, and cortisol) were collected. RESULTS Among 125 inpatients with schizophrenia, the prevalence of osteoporosis and low BMD (including osteoporosis and osteopenia) was 26.4% and 64%. The average BMD T value in patients receiving clozapine combined with PR antipsychotics was significantly higher than in patients receiving PR antipsychotics (p < 0.05). Patients in the clozapine combined with PR antipsychotic group had higher testosterone levels than the PR antipsychotic group (Z = - 2.77, p = 0.006). Linear logistic regression analysis indicated that clozapine combined with PR antipsychotic treatment (p < 0.05) and higher estradiol level (p < 0.05) may be significantly associated with higher BMD. CONCLUSIONS Our results suggest that the use of clozapine may be a protective factor for low BMD induced by PR antipsychotics in inpatients with schizophrenia. The possible mechanism is that clozapine may protect BMD by regulating estrogen and testosterone levels, but the mechanism by which clozapine regulates these two sex hormones needs further investigation.
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Affiliation(s)
- Jing Qiu
- Department of Radiology or Clinical Medicine Center for Mental illness, Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Hongxia Gong
- Department of Radiology, Wuxi Fifth People's Hospital, Wuxi, China
| | - Bixin Wang
- Department of Radiology or Clinical Medicine Center for Mental illness, Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Weiguo Gu
- Department of Radiology or Clinical Medicine Center for Mental illness, Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Lei Wang
- Department of Radiology or Clinical Medicine Center for Mental illness, Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Miaomiao Gu
- Department of Radiology or Clinical Medicine Center for Mental illness, Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Yuan Zhang
- Department of Radiology or Clinical Medicine Center for Mental illness, Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Xiangdong Du
- Department of Radiology or Clinical Medicine Center for Mental illness, Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu Province, China.
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18
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Lim K, Lee SA, Pinkham AE, Lam M, Lee J. Evaluation of social cognitive measures in an Asian schizophrenia sample. Schizophr Res Cogn 2020; 20:100169. [PMID: 32154121 PMCID: PMC7056931 DOI: 10.1016/j.scog.2019.100169] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/25/2019] [Accepted: 11/27/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Converging evidence has indicated that deficits in social cognition may manifest as poor functioning; therefore, social cognition has emerged as an important research area and treatment target. However, few studies have examined the psychometrics of multiple social cognition measures in an Asian population. This study aims to evaluate the psychometrics of measures indexing the four core social cognition domains. METHODS Schizophrenia outpatients (n = 116) and healthy controls (n = 73) completed a battery of nine social cognitive measures, twice, four weeks apart. Psychometric properties were examined via test-retest reliability, internal consistency, utility as a repeated measure, time administration, and tolerability. Logistic regression was performed to identify psychometrically sound tasks that best discriminated case-control status. PCA was conducted to explore social cognition dimensional structure. RESULTS The Bell Lysaker Emotion Recognition Task (BLERT), Penn Emotion Recognition Task (ER40), and The Awareness of Social Inference Test, branch III (TASIT-3) showed strongest psychometrics. The Ambiguous Intentions and Hostility Questionnaire, Hostility Bias subscale (AIHQ-HB) showed slightly weaker properties, requiring further evaluation. The Hinting task, Mini Profile of Nonverbal Sensitivity (MiniPONS), Relationships Across Domains (RAD), Internal Personal and Situational Attributions Questionnaire (IPSAQ), and Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT) showed poorer psychometrics in our sample. PCA revealed a two-factor solution comprising social cognition skills and attributional style/bias. CONCLUSION Here, we examined the psychometric properties of a comprehensive social cognition battery based on the SCOPE study in an Asian schizophrenia population. Continued evaluation and standardization of social cognitive measures are needed to refine our understanding of this construct in schizophrenia.
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Affiliation(s)
- Keane Lim
- Research Division, Institute of Mental Health, Singapore
| | - Sara-Ann Lee
- Department of Psychology, Institute of Mental Health, Singapore
| | - Amy E. Pinkham
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, Richardson, TX, USA
| | - Max Lam
- Research Division, Institute of Mental Health, Singapore
| | - Jimmy Lee
- Research Division, Institute of Mental Health, Singapore
- Department of Psychosis, Institute of Mental Health, Singapore
- Neuroscience and Mental Health, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
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Ong WJ, Tan XW, Shahwan S, Satghare P, Cetty L, Ng BT, Tang C, Verma S, Chong SA, Subramaniam M. Association between sleep quality and domains of quality of life amongst patients with first episode psychosis. Health Qual Life Outcomes 2020; 18:114. [PMID: 32349756 PMCID: PMC7189457 DOI: 10.1186/s12955-020-01367-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 04/16/2020] [Indexed: 01/04/2023] Open
Abstract
Background There is a lack of studies exploring associations between sleep and quality of life (QOL) among patients with schizophrenia who have limited exposure to antipsychotics and are in the early stage of their illness. Our study investigates the association of poor sleep quality and its components with domains of QOL amongst patients with first episode psychosis (FEP). Methods Data was utilized from a longitudinal study that examined sleep, smoking and alcohol use amongst patients with FEP who were enrolled in the Early Psychosis Intervention Programme (EPIP). The data were collected during the patients’ baseline visit; i.e., within 3 months of admission into the EPIP. The Pittsburgh Sleep Quality Index (PSQI) was employed to examine sleep quality and its 7 components over the last month. The WHO quality of life-BREF was used to examine QOL and its 4 domains: physical health, psychological, social relationship, and environment. Clinical data such as Positive and Negative Syndrome Scale (PANSS) and Global Assessment of Functioning (GAF) scores were obtained from a clinical data base. Linear regression analyses were conducted to investigate the association between poor sleep quality and the domains of QOL. Results Amongst the 280 recruited patients, 62.9% suffered from poor sleep quality. Poor sleep quality was associated with significantly lower scores in all domains of QOL, despite controlling for socio-demographics and clinical variables. Respondents with higher scores in subjective sleep quality and daytime dysfunction were associated with lower scores in the physical health and social relationship domain. Furthermore, respondents with higher scores in subjective sleep quality, sleep latency and daytime dysfunction were associated with lower scores in the psychological domain of QOL. Finally, respondents with higher scores in subjective sleep quality were associated with lower scores in the environment domain of QOL. Conclusions Our findings highlight the importance of monitoring sleep quality amongst patients with FEP to improve their QOL. Clinical programmes should also pay more attention to sleep components in order to maintain satisfactory QOL amongst patients with FEP. Future interventions should focus on improving the relevant sleep components to ensure better treatment outcomes.
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Affiliation(s)
- Wei Jie Ong
- Research Division, Institute of Mental Health, Buangkok Green Medical Park, 10 Buangkok View, Singapore, 539747, Singapore.
| | - Xiao Wei Tan
- Research Division, Institute of Mental Health, Buangkok Green Medical Park, 10 Buangkok View, Singapore, 539747, Singapore
| | - Shazana Shahwan
- Research Division, Institute of Mental Health, Buangkok Green Medical Park, 10 Buangkok View, Singapore, 539747, Singapore
| | - Pratika Satghare
- Research Division, Institute of Mental Health, Buangkok Green Medical Park, 10 Buangkok View, Singapore, 539747, Singapore
| | - Laxman Cetty
- Research Division, Institute of Mental Health, Buangkok Green Medical Park, 10 Buangkok View, Singapore, 539747, Singapore
| | - Boon Tat Ng
- Pharmancy Department, Institute of Mental Health, Buangkok Green Medical Park, 10 Buangkok View, Singapore, 539747, Singapore
| | - Charmaine Tang
- Department of Early Psychosis Intervention, Institute of Mental Health, Buangkok Green Medical Park, 10 Buangkok View, Singapore, 539747, Singapore
| | - Swapna Verma
- Department of Early Psychosis Intervention, Institute of Mental Health, Buangkok Green Medical Park, 10 Buangkok View, Singapore, 539747, Singapore
| | - Siow Ann Chong
- Research Division, Institute of Mental Health, Buangkok Green Medical Park, 10 Buangkok View, Singapore, 539747, Singapore
| | - Mythily Subramaniam
- Research Division, Institute of Mental Health, Buangkok Green Medical Park, 10 Buangkok View, Singapore, 539747, Singapore
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Abstract
SummaryLateral gaze aversions which follow reflective or thought provoking questions are called conjugated lateral eye movements (CLEMs). This response was studied in 20 schizophrenic patients, 20 depressive patients and 20 healthy controls. Frontal and parietal EEG measures were recorded simultaneously with the question/answer task. There were no differences in CLEMs among the 3 groups. Schizophrenic and depressive patients demonstrated a significantly reduced EEG-power on the left and an increased power on the right in comparison with healthy controls. This may point to a functional interhemispheric ‘disconnection’ in patients. Comparative correlations revealed EEG-power increase during the occurrence of contralateral CLEMs in the whole 10 min task.
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Leucht S, Crippa A, Siafis S, Patel MX, Orsini N, Davis JM. Dose-Response Meta-Analysis of Antipsychotic Drugs for Acute Schizophrenia. Am J Psychiatry 2020; 177:342-353. [PMID: 31838873 DOI: 10.1176/appi.ajp.2019.19010034] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The dose-response relationships of antipsychotic drugs for schizophrenia are not well defined, but such information would be important for decision making by clinicians. The authors sought to fill this gap by conducting dose-response meta-analyses. METHODS A search of multiple electronic databases (through November 2018) was conducted for all placebo-controlled dose-finding studies for 20 second-generation antipsychotic drugs and haloperidol (oral and long-acting injectable, LAI) in people with acute schizophrenia symptoms. Dose-response curves were constructed with random-effects dose-response meta-analyses and a spline model. The outcome measure was total score reduction from baseline on the Positive and Negative Syndrome Scale or the Brief Psychiatric Rating Scale. The authors identified 95% effective doses, explored whether higher or lower doses than the currently licensed ones might be more appropriate, and derived dose equivalencies from the 95% effective doses. RESULTS Sixty-eight studies met the inclusion criteria. The 95% effective doses and the doses equivalent to 1 mg of oral risperidone, respectively, were as follows: amisulpride for patients with positive symptoms, 537 mg/day and 85.8 mg; aripiprazole, 11.5 mg/day and 1.8 mg; aripiprazole LAI (lauroxil), 463 mg every 4 weeks and 264 mg; asenapine, 15.0 mg/day and 2.4 mg; brexpiprazole, 3.36 mg/day and 0.54 mg; haloperidol, 6.3 mg/day and 1.01 mg; iloperidone, 20.13 mg/day and 3.2 mg; lurasidone, 147 mg/day and 23.5 mg; olanzapine, 15.2 mg/day and 2.4 mg; olanzapine LAI, 277 mg every 2 weeks and 3.2 mg; paliperidone, 13.4 mg/day and 2.1 mg; paliperidone LAI, 120 mg every 4 weeks and 1.53 mg; quetiapine, 482 mg/day and 77 mg; risperidone, 6.3 mg/day and 1 mg; risperidone LAI, 36.6 mg every 2 weeks and 0.42 mg; sertindole, 22.5 mg/day and 3.6 mg; and ziprasidone, 186 mg/day and 30 mg. For amisulpride and olanzapine, specific data for patients with predominant negative symptoms were available. The authors have made available on their web site a spreadsheet with this method and other updated methods that can be used to estimate dose equivalencies in practice. CONCLUSIONS In chronic schizophrenia patients with acute exacerbations, doses higher than the identified 95% effective doses may on average not provide more efficacy. For some drugs, higher than currently licensed doses might be tested in further trials, because their dose-response curves did not plateau.
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Affiliation(s)
- Stefan Leucht
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| | - Alessio Crippa
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| | - Spyridon Siafis
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| | - Maxine X Patel
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| | - Nicola Orsini
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
| | - John M Davis
- Department of Psychiatry and Psychotherapy, Technical University of Munich, School of Medicine, Munich (Leucht, Siafis); Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London (Leucht, Patel); Department of Global Public Health, Karolinska Institutet, Stockholm (Orsini); Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm (Crippa); Department of Psychiatry, University of Illinois at Chicago, and John Hopkins School of Medicine, Baltimore (Davis)
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22
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Furukawa TA, Cipriani A, Cowen PJ, Leucht S, Egger M, Salanti G. Optimal Dose of Selective Serotonin Reuptake Inhibitors, Venlafaxine, and Mirtazapine in Major Depression: A Systematic Review and Dose-Response Meta-Analysis. FOCUS (AMERICAN PSYCHIATRIC PUBLISHING) 2020; 18:211-219. [PMID: 33343239 PMCID: PMC7587875 DOI: 10.1176/appi.focus.18204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
(Reprinted with permission from Lancet Psychiatry. 2019 Jul;6(7):601-609).
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Abu-Akel A, Philip RCM, Lawrie SM, Johnstone EC, Stanfield AC. Categorical and Dimensional Approaches to Examining the Joint Effect of Autism and Schizotypal Personality Disorder on Sustained Attention. Front Psychiatry 2020; 11:798. [PMID: 32848955 PMCID: PMC7426517 DOI: 10.3389/fpsyt.2020.00798] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 07/24/2020] [Indexed: 12/15/2022] Open
Abstract
INTRODUCTION Accumulating evidence for the co-occurrence autism spectrum disorder (ASD) and schizotypal personality disorder (SPD) at both the diagnostic and symptom levels raises important questions about the nature of their association and the effect of their co-occurrence on the individual's phenotype and functional outcome. Research comparing adults with ASD and SPD, as well as the impact of their co-occurrence on outcomes is extremely limited. We investigated executive functioning in terms of response inhibition and sustained attention, candidate endophenotypes of both conditions, in adults with ASD, SPD, comorbid ASD and SPD, and neurotypical adults using both categorical and dimensional approaches. METHODS A total of 88 adults (Mean Age = 37.54; SD = 10.17): ASD (n = 26; M/F = 20/6); SPD (n = 20; M/F = 14/6); comorbid ASD and SPD (n=9; M/F=6/3) and neurotypicals (n=33; M/F=23/10) completed the Sustained Attention to Response Task (SART) in both its fixed and random forms. Positive and autistic symptom severity was assessed with the positive subscale of the Positive and Negative Syndrome Scale (PANSSpos) and the PANSS Autism Severity Score (PAUSS), respectively. RESULTS Controlling for full scale IQ, working memory and medication dosage, group analyses revealed that the comorbid group committed fewer omission errors than the ASD group on the fixed SART, and fewer omission errors than the ASD and SPD groups on the random SART. The individual difference analyses of the entire sample revealed that the PANSSpos and PAUSS interactively reduced omission errors in both the fixed and random SARTs, as well as increased d' scores, indicative of improved overall performance. We observed no significant results for commission errors or reaction time. CONCLUSIONS Concurrent elevated levels of autistic and positive psychotic symptoms seem to be associated with improved sustained attention abilities (reduced omission errors) but not inhibition (commission errors). Our findings highlight the importance of investigating the concurrent effect of ASD and SPD at both the symptom and diagnostic levels, and raise important questions for future research regarding the clinical and behavioral phenotypes of adults with dual diagnosis and, more generally, about the nature of the relationship between ASD and SPD.
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Affiliation(s)
- Ahmad Abu-Akel
- Institute of Psychology, University of Lausanne, Lausanne, Switzerland
| | - Ruth C M Philip
- Tailor Ed Foundation, Edinburgh, United Kingdom.,Division of Psychiatry, University of Edinburgh, Edinburgh, United Kingdom
| | - Stephen M Lawrie
- Division of Psychiatry, University of Edinburgh, Edinburgh, United Kingdom
| | - Eve C Johnstone
- Division of Psychiatry, University of Edinburgh, Edinburgh, United Kingdom
| | - Andrew C Stanfield
- Division of Psychiatry, University of Edinburgh, Edinburgh, United Kingdom.,Patrick Wild Centre, University of Edinburgh, Edinburgh, United Kingdom
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24
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Yoon JH, Maddock RJ, Cui ED, Minzenberg MJ, Niendam TA, Lesh T, Solomon M, Ragland JD, Carter C. Reduced in vivo visual cortex GABA in schizophrenia, a replication in a recent onset sample. Schizophr Res 2020; 215:217-222. [PMID: 31704157 PMCID: PMC7035988 DOI: 10.1016/j.schres.2019.10.025] [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: 04/26/2019] [Revised: 09/07/2019] [Accepted: 10/09/2019] [Indexed: 12/20/2022]
Abstract
The GABA deficit hypothesis remains one of the most compelling explanations for the information processing impairments in schizophrenia. However, much of the supportive evidence has been derived from post-mortem studies, whereas in vivo studies have largely yielded inconsistent results. We undertook this single voxel proton magnetic resonance (MRS) GABA study to test in a sample of recent onset patients the replicability of our prior finding of reduced early visual cortex GABA in schizophrenia. We also examined the possibility that antipsychotics could represent a significant confound by studying a small subsample of antipsychotic naïve subjects. 23 adults with recent onset schizophrenia and a demographically matched sample of 31 healthy control subjects underwent MRS using a MEGA PRESS sequence on a 3T MR scanner to measure GABA concentration in early visual cortex. To control for in-scanner head movement confounding the results, we quantified the amount of head movement during GABA scans to identify and exclude from analysis scans with excessive movement. Patients demonstrated significantly reduced GABA levels compared to control subjects, p = 0.029. GABA levels did not differ significantly between patients who were antipsychotic naïve (n = 7) and patients treated with antipsychotics. This replication in a recent onset sample suggest that diminished GABA in the visual cortex is a reliable finding, present in early phase of illness and not confounded by illness chronicity.
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Affiliation(s)
- Jong H. Yoon
- Palo Alto VA Healthcare System, 3801 Miranda Avenue, Palo Alto, CA 94304, USA,Stanford University, 401 Quarry Road, Palo Alto, CA 94301, USA
| | | | - Edward DongBo Cui
- Palo Alto VA Healthcare System, 3801 Miranda Avenue, Palo Alto, CA 94304, USA,Stanford University, 401 Quarry Road, Palo Alto, CA 94301, USA
| | - Michael J. Minzenberg
- Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, 760 Westwood Plaza, Los Angeles, CA 90024, USA
| | - Tara A. Niendam
- University of California, Davis, 4701 X St, Sacramento, CA 95817, USA
| | - Tyler Lesh
- University of California, Davis, 4701 X St, Sacramento, CA 95817, USA
| | - Marjorie Solomon
- University of California, Davis, 4701 X St, Sacramento, CA 95817, USA
| | - J. Daniel Ragland
- University of California, Davis, 4701 X St, Sacramento, CA 95817, USA
| | - Cameron Carter
- University of California, Davis, 4701 X St, Sacramento, CA 95817, USA
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25
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Abdul Rashid NA, Nurjono M, Lee J. Clinical determinants of physical activity and sedentary behaviour in individuals with schizophrenia. Asian J Psychiatr 2019; 46:62-67. [PMID: 31627166 DOI: 10.1016/j.ajp.2019.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 10/03/2019] [Accepted: 10/03/2019] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Modifiable lifestyle factors such as physical activity (PA) have ameliorative effects on commonly reported health conditions in schizophrenia like cardiovascular diseases and diabetes. Similarly, reduction in sedentary behaviour (SB) promotes better physical health. However, engaging individuals with schizophrenia in PA and less SB can be challenging because of symptoms of schizophrenia. The aims of the present study are (i) to examine the profiles of PA and SB in individuals with schizophrenia; and (ii) to identify their respective clinical determinants. METHOD 157 individuals with schizophrenia were recruited. PA and SB were examined via the Global Physical Activity Questionnaire (GPAQ). Psychopathology was assessed using the Positive and Negative Syndrome Scale (PANSS). Potential clinical predictors of PA and SB were identified via univariate regression analyses and subsequently included in the final multiple regression models for PA and SB respectively. RESULTS 63.7% met the WHO PA guidelines. Work-related activity was the largest domain specific contribution towards PA. Mean duration of SB was approximately 9 h and about 57.3% reported at least 8 h or more of SB daily. Positive symptom was associated with engagement in PA and reduced duration of SB. Negative symptom was associated with greater SB. CONCLUSION With emerging evidence of deleterious health effects of SB independent of PA, it is important to monitor SB in individuals with schizophrenia, particularly those presenting with negative symptoms. While the lack of treatment response for negative symptoms remains a challenge, effort should be made to reduce duration of SB.
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Affiliation(s)
| | | | - Jimmy Lee
- Research Division, Institute of Mental Health, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore; North Region & Department of Psychosis, Institute of Mental Health, Singapore.
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26
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Watt JA, Gomes T, Bronskill SE, Huang A, Austin PC, Ho JM, Straus SE. Comparative risk of harm associated with trazodone or atypical antipsychotic use in older adults with dementia: a retrospective cohort study. CMAJ 2019; 190:E1376-E1383. [PMID: 30478215 DOI: 10.1503/cmaj.180551] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Trazodone is increasingly prescribed for behavioural and psychological symptoms of dementia, but little is known about its risk of harm. Our objective was to describe the comparative risk of falls and fractures among older adults with dementia dispensed trazodone or atypical antipsychotics. METHODS The study cohort included adults with dementia (excluding patients with chronic psychotic illnesses) living in long-term care and aged 66 years and older. Data were obtained from routinely collected, linked health administrative databases in Ontario, Canada. We compared new users of trazodone with new users of atypical antipsychotics (quetiapine, olanzapine or risperidone) between Dec. 1, 2009, and Dec. 31, 2015. The primary outcome was a composite of fall or major osteoporotic fracture within 90 days of first prescription. Secondary outcomes were falls, major osteoporotic fractures, hip fractures and all-cause mortality. RESULTS We included 6588 older adults dispensed trazodone and 2875 dispensed an atypical antipsychotic, of whom 95.2% received a low dose of these medications. Compared with use of atypical antipsychotics, use of trazodone was associated with similar rates of falls or major osteoporotic fractures (weighted hazard ratio [HR] 0.89, 95% confidence interval [CI] 0.73 to 1.07), major osteoporotic fracture (weighted HR 1.03, 95% CI 0.73 to 1.47), falls (weighted HR 0.91, 95% CI 0.75 to 1.11) and hip fractures (weighted HR 0.92, 95% CI 0.59 to 1.43). Use of trazodone was associated with a lower rate of mortality (weighted HR 0.75, 95% CI 0.66 to 0.85). INTERPRETATION Trazodone is not a uniformly safer alternative to atypical antipsychotics, given the similar risk of falls and fractures among older adults with dementia.
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Affiliation(s)
- Jennifer A Watt
- Division of Geriatric Medicine (Watt, Straus), University of Toronto; Li Ka Shing Knowledge Institute (Watt, Gomes, Straus), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Gomes), University of Toronto; ICES Central (Bronskill, Huang, Austin); Institute of Health Policy, Management, and Evaluation (Bronskill, Austin), University of Toronto, Toronto Ont.; ICES McMaster (Ho); Department of Medicine (Ho), McMaster University, Hamilton, Ont
| | - Tara Gomes
- Division of Geriatric Medicine (Watt, Straus), University of Toronto; Li Ka Shing Knowledge Institute (Watt, Gomes, Straus), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Gomes), University of Toronto; ICES Central (Bronskill, Huang, Austin); Institute of Health Policy, Management, and Evaluation (Bronskill, Austin), University of Toronto, Toronto Ont.; ICES McMaster (Ho); Department of Medicine (Ho), McMaster University, Hamilton, Ont
| | - Susan E Bronskill
- Division of Geriatric Medicine (Watt, Straus), University of Toronto; Li Ka Shing Knowledge Institute (Watt, Gomes, Straus), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Gomes), University of Toronto; ICES Central (Bronskill, Huang, Austin); Institute of Health Policy, Management, and Evaluation (Bronskill, Austin), University of Toronto, Toronto Ont.; ICES McMaster (Ho); Department of Medicine (Ho), McMaster University, Hamilton, Ont
| | - Anjie Huang
- Division of Geriatric Medicine (Watt, Straus), University of Toronto; Li Ka Shing Knowledge Institute (Watt, Gomes, Straus), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Gomes), University of Toronto; ICES Central (Bronskill, Huang, Austin); Institute of Health Policy, Management, and Evaluation (Bronskill, Austin), University of Toronto, Toronto Ont.; ICES McMaster (Ho); Department of Medicine (Ho), McMaster University, Hamilton, Ont
| | - Peter C Austin
- Division of Geriatric Medicine (Watt, Straus), University of Toronto; Li Ka Shing Knowledge Institute (Watt, Gomes, Straus), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Gomes), University of Toronto; ICES Central (Bronskill, Huang, Austin); Institute of Health Policy, Management, and Evaluation (Bronskill, Austin), University of Toronto, Toronto Ont.; ICES McMaster (Ho); Department of Medicine (Ho), McMaster University, Hamilton, Ont
| | - Joanne M Ho
- Division of Geriatric Medicine (Watt, Straus), University of Toronto; Li Ka Shing Knowledge Institute (Watt, Gomes, Straus), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Gomes), University of Toronto; ICES Central (Bronskill, Huang, Austin); Institute of Health Policy, Management, and Evaluation (Bronskill, Austin), University of Toronto, Toronto Ont.; ICES McMaster (Ho); Department of Medicine (Ho), McMaster University, Hamilton, Ont
| | - Sharon E Straus
- Division of Geriatric Medicine (Watt, Straus), University of Toronto; Li Ka Shing Knowledge Institute (Watt, Gomes, Straus), St. Michael's Hospital; Leslie Dan Faculty of Pharmacy (Gomes), University of Toronto; ICES Central (Bronskill, Huang, Austin); Institute of Health Policy, Management, and Evaluation (Bronskill, Austin), University of Toronto, Toronto Ont.; ICES McMaster (Ho); Department of Medicine (Ho), McMaster University, Hamilton, Ont.
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Furukawa TA, Cipriani A, Cowen PJ, Leucht S, Egger M, Salanti G. Optimal dose of selective serotonin reuptake inhibitors, venlafaxine, and mirtazapine in major depression: a systematic review and dose-response meta-analysis. Lancet Psychiatry 2019; 6:601-609. [PMID: 31178367 PMCID: PMC6586944 DOI: 10.1016/s2215-0366(19)30217-2] [Citation(s) in RCA: 164] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 05/07/2019] [Accepted: 05/08/2019] [Indexed: 10/31/2022]
Abstract
BACKGROUND Depression is the single largest contributor to non-fatal health loss worldwide. Second-generation antidepressants are the first-line option for pharmacological management of depression. Optimising their use is crucial in reducing the burden of depression; however, debate about their dose dependency and their optimal target dose is ongoing. We have aimed to summarise the currently available best evidence to inform this clinical question. METHODS We did a systematic review and dose-response meta-analysis of double-blind, randomised controlled trials that examined fixed doses of five selective serotonin reuptake inhibitors (SSRIs; citalopram, escitalopram, fluoxetine, paroxetine, and sertraline), venlafaxine, or mirtazapine in the acute treatment of adults (aged 18 years or older) with major depression, identified from the Cochrane Central Register of Controlled Trials, CINAHL, Embase, LILACS, MEDLINE, PsycINFO, AMED, PSYNDEX, websites of drug licensing agencies and pharmaceutical companies, and trial registries. We imposed no language restrictions, and the search was updated until Jan 8, 2016. Doses of SSRIs were converted to fluoxetine equivalents. Trials of antidepressants for patients with depression and a serious concomitant physical illness were excluded. The main outcomes were efficacy (treatment response defined as 50% or greater reduction in depression severity), tolerability (dropouts due to adverse effects), and acceptability (dropouts for any reasons), all after a median of 8 weeks of treatment (range 4-12 weeks). We used a random-effects, dose-response meta-analysis model with flexible splines for SSRIs, venlafaxine, and mirtazapine. FINDINGS 28 554 records were identified through our search (24 524 published and 4030 unpublished records). 561 published and 121 unpublished full-text records were assessed for eligibility, and 77 studies were included (19 364 participants; mean age 42·5 years, SD 11·0; 7156 [60·9%] of 11 749 reported were women). For SSRIs (99 treatment groups), the dose-efficacy curve showed a gradual increase up to doses between 20 mg and 40 mg fluoxetine equivalents, and a flat to decreasing trend through the higher licensed doses up to 80 mg fluoxetine equivalents. Dropouts due to adverse effects increased steeply through the examined range. The relationship between the dose and dropouts for any reason indicated optimal acceptability for the SSRIs in the lower licensed range between 20 mg and 40 mg fluoxetine equivalents. Venlafaxine (16 treatment groups) had an initially increasing dose-efficacy relationship up to around 75-150 mg, followed by a more modest increase, whereas for mirtazapine (11 treatment groups) efficacy increased up to a dose of about 30 mg and then decreased. Both venlafaxine and mirtazapine showed optimal acceptability in the lower range of their licensed dose. These results were robust to several sensitivity analyses. INTERPRETATION For the most commonly used second-generation antidepressants, the lower range of the licensed dose achieves the optimal balance between efficacy, tolerability, and acceptability in the acute treatment of major depression. FUNDING Japan Society for the Promotion of Science, Swiss National Science Foundation, and National Institute for Health Research.
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Affiliation(s)
- Toshi A Furukawa
- Department of Health Promotion and Human Behavior, and Department of Clinical Epidemiology, Graduate School of Medicine/School of Public Health, Kyoto University, Kyoto, Japan
| | - Andrea Cipriani
- Department of Psychiatry, University of Oxford, Warneford Hospital, Oxford, UK; Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK.
| | - Philip J Cowen
- Department of Psychiatry, University of Oxford, Warneford Hospital, Oxford, UK
| | - Stefan Leucht
- Technical University of Munich, School of Medicine, Department of Psychiatry and Psychotherapy, Munich, Germany
| | - Matthias Egger
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Georgia Salanti
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
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Reduced oligodendrocyte density in layer 5 of the prefrontal cortex in schizophrenia. Eur Arch Psychiatry Clin Neurosci 2019; 269:379-386. [PMID: 29572659 DOI: 10.1007/s00406-018-0888-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 03/16/2018] [Indexed: 12/11/2022]
Abstract
Neuroimaging and post-mortem studies have implicated altered myelin integrity and oligodendrocyte abnormalities in the dysfunction of neuronal network in schizophrenia, including the prefrontal cortex, Brodmann area (BA) 10. Pyramidal neurons in layer 5 of BA10 are the important link of reciprocal frontal cortical-basal ganglia-thalamic circuits altered in schizophrenia. Previously, we found ultrastructural dystrophic and degenerative alterations of oligodendrocytes in layer 5 of BA10 in schizophrenia. The aim of the study was to estimate the numerical density (Nv) of oligodendrocytes in layer 5 of BA10 in schizophrenia as compared to normal controls. 17 chronic schizophrenia subjects and 22 healthy matched controls were studied in Nissl-stained sections using optical disector method. Group differences were analyzed using ANCOVA followed by post hoc Duncan's test. The Nv of oligodendrocytes was significantly lower (- 32%, p < 0.001) in the schizophrenia group as compared to the control group. Young controls (age < 50 years old) showed significantly higher Nv of oligodendrocytes as compared to elderly controls (age > 50 years old). Young and elderly schizophrenia subgroups did not differ significantly. Both control subgroups have significantly higher Nv of oligodendrocytes as compared to the schizophrenia subgroups. Decreased Nv of oligodendrocytes found in layer 5 of BA10 may be the result of dystrophic and destructive alterations and/or disrupted development of oligodendrocytes in schizophrenia.
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Scheinost D, Tokoglu F, Hampson M, Hoffman R, Constable RT. Data-Driven Analysis of Functional Connectivity Reveals a Potential Auditory Verbal Hallucination Network. Schizophr Bull 2019; 45:415-424. [PMID: 29660081 PMCID: PMC6403094 DOI: 10.1093/schbul/sby039] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Schizophrenia is a severe global health problem, with over half of such patients experiencing auditory verbal hallucinations (AVHs). A better understanding of the neural correlates differentiating patients experiencing AVHs from patients not experiencing AVHs and healthy controls may identify targets that lead to better treatment strategies for AVHs. Employing 2 data-driven, voxel-based measure of functional connectivity, we studied 46 patients with schizophrenia or schizoaffective disorder (28 experiencing AVHs and 18 not experiencing AVHs). Twenty healthy controls matched for age, gender, ethnicity, education level, handedness, and estimated verbal intelligence were included for comparison. The intrinsic connectivity distribution (ICD) was used to model each voxel's connectivity to the rest of the brain using a Weibull distribution. To investigate lateralization of connectivity, we used cross-hemisphere ICD, a method that separates the contribution of each hemisphere to interrogate connectivity laterality. Patients with AVHs compared with patients without AVHs exhibited significantly decreased whole-brain connectivity in the medial prefrontal cortex and posterior cingulate cortex, less lateralized connectivity in left putamen, and more lateralized connectivity in left interior frontal gyrus. Correlations with Auditory Hallucination Rating Scale (AHRS) and post hoc seed connectivity analyses revealed significantly altered network connectivity. Using the results from all analyses comparing the patient groups and correlations with AHRS, we identified a potential AVH network, consisting of 25 nodes, showing substantial overlap with the default mode network and language processing networks. This network as a whole, instead of individual nodes, may represent actionable targets for interventions.
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Affiliation(s)
- Dustin Scheinost
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, CT,To whom correspondence should be addressed; Magnetic Resonance Research Center, 300 Cedar St, PO Box 208043, New Haven, CT 06520-8043, USA; tel: 203-785-6148, fax: 203-737-1124, e-mail:
| | - Fuyuze Tokoglu
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, CT
| | - Michelle Hampson
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, CT
| | - Ralph Hoffman
- Department of Psychiatry, Yale School of Medicine, New Haven, CT
| | - R Todd Constable
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, CT,Department of Neurosurgery, Yale School of Medicine, New Haven, CT
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Aspinall SL, Hanlon JT, Niznik JD, Springer SP, Thorpe CT. Deprescribing in Older Nursing Home Patients: Focus on Innovative Composite Measures for Dosage Deintensification. Innov Aging 2018; 1:igx031. [PMID: 30564752 DOI: 10.1093/geroni/igx031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Indexed: 01/15/2023] Open
Abstract
Deprescribing, which includes stopping or reducing the dosage of medications, is designed to improve safety and prevent adverse drug reactions in older patients. To date, there has been limited work on measuring decreases in dosage intensity, or deintensification, across therapeutic classes of medications. Given the ongoing focus on central nervous system (CNS) medications and the frequency with which providers encounter hypertension and diabetes in older nursing home patients, the objective of this expert review is to describe and critique innovative composite dosage intensity measures that have been, or could be, applied to quantify deintensification within three therapeutic medication targets commonly encountered in nursing home patients: CNS agents, antihypertensive therapy, and antidiabetic therapy and the extent to which they are associated with health outcomes. Composite measures for CNS medication intensity considered dividing a patient's daily dose by defined daily dosage (DDD), or the minimum effective adult or geriatric daily dosage. In contrast, composite measures for antihypertensives used either DDD or maximum recommended daily dosage in the denominator. We were not able to identify any composite measure of intensity for antidiabetic classes. There was a paucity of interventional studies that showed reducing the dosage intensity resulted in improved health outcomes. In conclusion, we identified several innovative composite measures of dosage intensity for CNS and antihypertensive medications, and discussed possible approaches for developing an antidiabetic regimen composite measure. It is critical for future research to compare and contrast various measures and to determine their impact on important clinical outcomes.
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Affiliation(s)
- Sherrie L Aspinall
- VA Center for Medication Safety/Pharmacy Benefits Management Services, Hines, Illinois.,VA Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System, Pennsylvania.,Department of Pharmacy and Therapeutics, School of Pharmacy, University of Pittsburgh, Pennsylvania
| | - Joseph T Hanlon
- VA Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System, Pennsylvania.,Department of Pharmacy and Therapeutics, School of Pharmacy, University of Pittsburgh, Pennsylvania.,Geriatric Research Education and Clinical Center, VA Pittsburgh Healthcare System, Pennsylvania.,Department of Medicine (Geriatrics), School of Medicine, University of Pittsburgh, Pennsylvania.,Department of Epidemiology, School of Public Health, University of Pittsburgh, Pennsylvania
| | - Joshua D Niznik
- VA Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System, Pennsylvania.,Department of Pharmacy and Therapeutics, School of Pharmacy, University of Pittsburgh, Pennsylvania.,Department of Medicine (Geriatrics), School of Medicine, University of Pittsburgh, Pennsylvania
| | - Sydney P Springer
- VA Center for Medication Safety/Pharmacy Benefits Management Services, Hines, Illinois.,VA Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System, Pennsylvania.,Department of Pharmacy and Therapeutics, School of Pharmacy, University of Pittsburgh, Pennsylvania
| | - Carolyn T Thorpe
- VA Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System, Pennsylvania.,Department of Pharmacy and Therapeutics, School of Pharmacy, University of Pittsburgh, Pennsylvania
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Yang SY, Chen LY, Najoan E, Kallivayalil RA, Viboonma K, Jamaluddin R, Javed A, Hoa DTQ, Iida H, Sim K, Swe T, He YL, Park Y, Ahmed HU, De Alwis A, Chiu HFK, Sartorius N, Tan CH, Chong MY, Shinfuku N, Lin SK. Polypharmacy and psychotropic drug loading in patients with schizophrenia in Asian countries: Fourth survey of Research on Asian Prescription Patterns on antipsychotics. Psychiatry Clin Neurosci 2018; 72:572-579. [PMID: 29761577 DOI: 10.1111/pcn.12676] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 12/28/2017] [Accepted: 01/30/2018] [Indexed: 11/28/2022]
Abstract
AIM The aim of the present study was to survey the prevalence of antipsychotic polypharmacy and combined medication use across 15 Asian countries and areas in 2016. METHODS By using the results from the fourth survey of Research on Asian Prescription Patterns on antipsychotics, the rates of polypharmacy and combined medication use in each country were analyzed. Daily medications prescribed for the treatment of inpatients or outpatients with schizophrenia, including antipsychotics, mood stabilizers, anxiolytics, hypnotics, and antiparkinson agents, were collected. Fifteen countries from Asia participated in this study. RESULTS A total of 3744 patients' prescription forms were examined. The prescription patterns differed across these Asian countries, with the highest rate of polypharmacy noted in Vietnam (59.1%) and the lowest in Myanmar (22.0%). Furthermore, the combined use of other medications, expressed as highest and lowest rate, respectively, was as follows: mood stabilizers, China (35.0%) and Bangladesh (1.0%); antidepressants, South Korea (36.6%) and Bangladesh (0%); anxiolytics, Pakistan (55.7%) and Myanmar (8.5%); hypnotics, Japan (61.1%) and, equally, Myanmar (0%) and Sri Lanka (0%); and antiparkinson agents, Bangladesh (87.9%) and Vietnam (10.9%). The average psychotropic drug loading of all patients was 2.01 ± 1.64, with the highest and lowest loadings noted in Japan (4.13 ± 3.13) and Indonesia (1.16 ± 0.68), respectively. CONCLUSION Differences in psychiatrist training as well as the civil culture and health insurance system of each country may have contributed to the differences in these rates. The concept of drug loading can be applied to other medical fields.
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Affiliation(s)
- Shu-Yu Yang
- Department of Psychiatry, Taipei City Hospital and Psychiatric Center, Taipei, Taiwan
| | - Lian-Yu Chen
- Department of Psychiatry, Taipei City Hospital and Psychiatric Center, Taipei, Taiwan
| | - Eunice Najoan
- Dr Mintohardjo Indonesian Navy Hospital, Jakarta, Indonesia
| | | | | | - Ruzita Jamaluddin
- Department of Psychiatry & Mental Health, Hospital Tuanku Fauziah, Kangar, Malaysia
| | - Afzal Javed
- Pakistan Psychiatric Research Centre, Fountain House, Lahore, Pakistan
| | | | - Hitoshi Iida
- Department of Psychiatry, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Kang Sim
- Department of General Psychiatry, Institute of Mental Health, Buangkok Green Medical Park, Singapore
| | - Thiha Swe
- Department of Mental Health, University of Medicine, Magway, Myanmar
| | - Yan-Ling He
- Department of Psychiatric Epidemiology, Shanghai Mental Health Center, Shanghai, China
| | - Yongchon Park
- Department of Psychiatry, Hanyang University, Seoul, Korea
| | - Helal Uddin Ahmed
- Department of Child Adolescent and Family Psychiatry, National Institute of Mental Health, Dhaka, Bangladesh
| | | | - Helen Fung-Kum Chiu
- Department of Psychiatry, Chinese University of Hong Kong, Hong Kong SAR, China
| | - Norman Sartorius
- Association for the Improvement of Mental Health Programs, Geneva, Switzerland
| | - Chay-Hoon Tan
- Department of Pharmacology, National University of Singapore, Singapore
| | - Mian-Yoon Chong
- Department of General Psychiatry, Chiayi Chang Gung Memorial Hospital and School of Medicine, Chang Gung University, Chiayi, Taiwan
| | - Naotaka Shinfuku
- Department of Social Welfare, School of Human Sciences, Seinan Gakuin University, Fukuoka, Japan
| | - Shih-Ku Lin
- Department of Psychiatry, Taipei City Hospital and Psychiatric Center, Taipei, Taiwan.,Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
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32
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Vikhreva OV, Rakhmanova VI, Orlovskaya DD, Uranova NA. [Ultrastructural pathology of oligodendrocytes in white matter in continuous attack-like schizophrenia and a role for microglia]. Zh Nevrol Psikhiatr Im S S Korsakova 2018; 118:69-74. [PMID: 29927407 DOI: 10.17116/jnevro20181185169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
AIM Previously the authors have reported the ultrastructural pathology and deficits of oligodendrocytes in gray and white matter of the prefrontal cortex in continuous paranoid schizophrenia. The aim of the present work was to study the effects of microglia on the ultrastructure of oligodendrocytes in white matter underlying the prefrontal cortex (BA10) in attack-like schizophrenia. MATERIAL AND METHODS Postmortem morphometric electron microscopic study of oligodendrocytes in close apposition to microglia was performed in white matter underlying the prefrontal cortex (BA10). Nine cases of chronic attack-like schizophrenia and 20 normal controls were studied. Areas of oligodendrocytes, volume density (Vv) and the number of mitochondria, vacuoles of endoplasmic reticulum and lipofuscin granules were estimated. Group comparison was performed using ANCOVA. RESULTS The schizophrenia group differed from the control group by paucity of ribosomes in cytoplasm of oligodendrocytes, cytoplasm swelling, a significant increase in Vv and number of vacuoles and lipofuscin granules. Significant correlations between the parameters of vacuoles and lipofuscin granules and mitochondria were found only in the schizophrenia group. CONCLUSION Dystrophic alterations of oligodendrocytes apposed microglial cells were found in the white matter of the prefrontal cortex in chronic schizophrenia as compared to controls. Microglia might contribute to abnormalities of lipid and protein metabolism of oligodendrocytes.
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Affiliation(s)
| | | | | | - N A Uranova
- Mental Health Research Center, Moscow, Russia
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Yokoyama N, Sasaki H, Mori Y, Ono M, Tsurumi K, Kawada R, Matsumoto Y, Yoshihara Y, Sugihara G, Miyata J, Murai T, Takahashi H. Additive Effect of Cigarette Smoking on Gray Matter Abnormalities in Schizophrenia. Schizophr Bull 2018; 44:535-541. [PMID: 29036371 PMCID: PMC5890451 DOI: 10.1093/schbul/sbx092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
It is widely known that there is a high prevalence of cigarette smoking in schizophrenia. One of the explanations is the self-medication hypothesis. Based on this hypothesis, it has been suggested that nicotine has procognitive effect or even neuroprotective effect in schizophrenia. However, cigarettes contain numerous neurotoxic substances, making the net effect of cigarette smoking on brain function and structure complex. Indeed, recent studies have called into question the self-medication hypothesis. We aimed to test whether there is an interaction between diagnosis and smoking status in gray matter volume, ie, whether smoking has specific effects on gray matter or whether main effects of these 2 variables additively affect common brain regions. Magnetic resonance imaging (MRI) images were obtained from 4 groups: (1) normal controls with no smoking history, (2) normal controls currently smoking and/or with a past history of smoking, (3) schizophrenia patients with no smoking history, and (4) schizophrenia patients currently smoking and/or with a past history of smoking. We used voxel-based morphometry to compare gray matter volumes among the 4 groups. We did not find any interaction between diagnosis and smoking, but we did find negative additive effects of schizophrenia diagnosis and smoking status in the left prefrontal cortex. The decrease in left prefrontal volume was associated with greater numbers of cigarette pack years and severe positive and negative symptoms. The current findings do not support the neuroprotective effect of smoking on gross brain structure in schizophrenia, emphasizing the necessity of longitudinal studies to test causal relationships among these variables.
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Affiliation(s)
- Naoto Yokoyama
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hitoshi Sasaki
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yasuo Mori
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Miki Ono
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kousuke Tsurumi
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryosaku Kawada
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yukiko Matsumoto
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yujiro Yoshihara
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Genichi Sugihara
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Jun Miyata
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshiya Murai
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hidehiko Takahashi
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan,To whom correspondence should be addressed; Department of Psychiatry, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaharacho, Sakyo-ku, Kyoto 606-8507, Japan; tel: +81-75-751-3386, fax: +81-75-751-3246, e-mail:
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34
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Uranova NA, Vikhreva OV, Rakhmanova VI, Orlovskaya DD. [Ultrastructural pathology of oligodendrocytes in the white matter in continuous paranoid schizophrenia: a role for microglia]. Zh Nevrol Psikhiatr Im S S Korsakova 2018; 117:76-81. [PMID: 29053125 DOI: 10.17116/jnevro20171179176-81] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AIM Previously the authors have reported the ultrastructural pathology and deficit of oligodendrocytes in gray and white matter of the prefrontal cortex in schizophrenia. The aim of the study was to determine of the effects of microglia on the ultrastructure of oligodendrocytes in the white matter underlying the prefrontal cortex in continuous schizophrenia. MATERIAL AND METHODS Postmortem morphometric electron microscopic study of oligodendrocytes in close apposition to microglia was performed in white matter underlying the prefrontal cortex (BA10). Eleven cases of chronic continuous schizophrenia and 11 normal controls were studied. Areas of oligodendrocytes, of their nuclei and cytoplasm, volume density (Vv) and the number of mitochondria, vacuoles of endoplasmic reticulum and lipofuscin granules were estimated. Group comparison was performed using ANCOVA. RESULTS The schizophrenia group differed from the control group by paucity of ribosomes in the cytoplasm of oligodendrocytes, a significant decrease in Vv and the number of mitochondria and increase in the number of lipofuscin granules. Significant correlations between the parameters of lipofuscin granules, mitochondria and vacuoles were found only in the schizophrenia group. The number of lipofuscin granules were correlated positively with the illness duration. CONCLUSION Dystrophic alterations of oligodendrocytes attached to microglial cells were found in the white matter of the prefrontal cortex in chronic paranoid schizophrenia as compared to controls. The data obtained suggest that microglia might contribute to abnormalities of energy, lipid and protein metabolism of oligodendrocytes in schizophrenia.
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Affiliation(s)
- N A Uranova
- Mental Health Research Centre, Moscow, Russia
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35
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Subramaniam M, Abdin E, Shahwan S, Satghare P, Vaingankar JA, Rama Sendren J, Picco L, Chua BY, Ng BT, Chong SA, Verma S. Prevalence, correlates and outcomes of insomnia in patients with first episode psychosis from a tertiary psychiatric institution in Singapore. Gen Hosp Psychiatry 2018; 51:15-21. [PMID: 29268166 DOI: 10.1016/j.genhosppsych.2017.11.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 11/20/2017] [Accepted: 11/21/2017] [Indexed: 12/21/2022]
Abstract
OBJECTIVES The study aimed to evaluate the prevalence of insomnia in patients with first episode psychosis (FEP) and to explore the relationship between insomnia and socio-demographic and clinical variables as well as quality of life (QOL) and functioning in Singapore. METHODS Data on sleep, smoking, alcohol habits, QOL and socio-demographics were collected from 280 FEP patients who were enrolled in the Early Psychosis Intervention Programme (EPIP) within 3months of joining the programme. Multiple logistic regression analyses were performed to determine the socio-demographic and clinical correlates of insomnia. The association of insomnia with QOL as well as functioning was examined using multiple linear regression analyses. RESULTS The prevalence of clinical insomnia was 22.6%. Older age and higher dosage of antipsychotic medication were significantly associated with a lower risk of insomnia while hazardous alcohol use, current smoking and a longer duration of untreated psychosis were significantly associated with a higher risk of insomnia. Insomnia was associated with significant decreases in all QOL domains assessed in the study even after adjusting for confounders. CONCLUSIONS FEP patients with insomnia must be screened for hazardous alcohol use and smoking. Patients must be referred concurrently for treatment of insomnia, smoking cessation as well as brief intervention for hazardous alcohol use when needed.
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Affiliation(s)
| | | | | | | | | | - Jagan Rama Sendren
- Department of Early Psychosis Intervention, Institute of Mental Health, Singapore
| | - Louisa Picco
- Research Division, Institute of Mental Health, Singapore
| | | | - Boon Tat Ng
- Pharmacy Department, Institute of Mental Health, Singapore
| | - Siow Ann Chong
- Research Division, Institute of Mental Health, Singapore
| | - Swapna Verma
- Department of Early Psychosis Intervention, Institute of Mental Health, Singapore; Duke-NUS Medical School, Singapore
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Rothe PH, Heres S, Leucht S. Dose equivalents for second generation long-acting injectable antipsychotics: The minimum effective dose method. Schizophr Res 2018; 193:23-28. [PMID: 28735640 DOI: 10.1016/j.schres.2017.07.033] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 07/11/2017] [Accepted: 07/14/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND The concept of dose equivalence of depot medication is important for many scientific and clinical purposes. METHODS A systematic literature search on four second-generation antipsychotics available as long-acting injectable drugs and haloperidol was conducted. We used the minimum effective dose method which is based on randomized fixed dose studies where the smallest dose which was significantly more efficacious than placebo in the primary outcome was declared as minimum effective dose. We calculated equivalent doses from acute phase studies but we also reported the minimum effective doses found in relapse prevention studies. RESULTS The acute phase minimum effective doses/olanzapine equivalents were: aripiprazole lauroxil 441mg (300mg aripiprazole)/4wks/0.71; aripiprazole 400mg/4weeks/0.95 (aripiprazole maintena); paliperidone palmitate 25mg/4weeks/0,06; risperidone 25mg/2weeks/0,12; RBP-7000 90mg/4weeks/0,21; olanzapine 210mg/2weeks/1. CONCLUSIONS The minimum effective dose method is an operationalized and evidence-based approach for determining antipsychotic dose equivalence which can also be applied to long-acting injectable formulations. Doses may not have been chosen low enough to find the truly minimum effective dose. Comparisons with other methods will be necessary to come to ultimate conclusions.
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Affiliation(s)
- Philipp H Rothe
- kbo-Klinik Taufkirchen (Vils), Departement of Forensic Psychiatry, Taufkirchen (Vils), Germany; Department of Psychiatry and Psychotherapy, Technische Universität München, Munich, Germany.
| | - Stephan Heres
- Department of Psychiatry and Psychotherapy, Technische Universität München, Munich, Germany
| | - Stefan Leucht
- Department of Psychiatry and Psychotherapy, Technische Universität München, Munich, Germany
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37
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Shafie S, Lee SP, Ong SBC, Wang P, Seow E, Ong HL, Chong SA, Subramaniam M. Prevalence and correlates of diabetes mellitus and dyslipidaemia in a long-stay inpatient schizophrenia population in Singapore. Singapore Med J 2018; 59:465-471. [PMID: 29430576 DOI: 10.11622/smedj.2018020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Patients with schizophrenia have shorter life expectancy and one of the main causes of death is cardiovascular disease (CVD). Modifiable risk factors for CVD include diabetes mellitus (DM) and dyslipidaemia. This study aimed to establish: (a) the prevalence and correlates of DM and dyslipidaemia; (b) the proportion of those whose condition was well controlled; and (c) the incidence of undiagnosed DM and dyslipidaemia in a long-stay inpatient schizophrenia population. METHODS Data was collected to assess the physical health status of 110 inpatients with schizophrenia who had been in hospital for over one year. Information on sociodemographic characteristics, diagnosis of physical and mental illnesses, and current medications was obtained from their medical records. The overall prevalence of DM and dyslipidaemia was based on diagnosis in the medical records, current medications and fasting blood test results. RESULTS The patient group was predominantly male (85.5%), with a mean age of 55.9 ± 9.9 (range 25-90) years. Overall prevalence of DM and dyslipidaemia was 19.1% and 62.7%, respectively. Multivariate logistic regression analysis showed that Malay (odds ratio [OR] 14.97) and Indian (OR 25.71) patients were significantly more likely to have DM when compared to Chinese patients. CONCLUSION In comparison to the general population, the prevalence of DM and dyslipidaemia was found to be higher in inpatients with schizophrenia. However, the two chronic illnesses were well controlled in inpatients and few were undiagnosed, perhaps due to the regular monitoring, supervised diet and regular physical activities arranged for inpatients in the long-stay inpatient wards.
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Affiliation(s)
- Saleha Shafie
- Research Division, Institute of Mental Health, Singapore
| | - Siau Pheng Lee
- Research Division, Institute of Mental Health, Singapore
| | | | - Peizhi Wang
- Research Division, Institute of Mental Health, Singapore
| | - Esmond Seow
- Research Division, Institute of Mental Health, Singapore
| | - Hui Lin Ong
- Research Division, Institute of Mental Health, Singapore
| | - Siow Ann Chong
- Research Division, Institute of Mental Health, Singapore
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Jones JC, Day JC, Taylor JR, Thomas CS. Investigation of depot neuroleptic injection site reactions. PSYCHIATRIC BULLETIN 2018. [DOI: 10.1192/pb.22.10.605] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Aims and methodA cross-sectional survey was performed on 318 patients receiving depot medication. The presence or absence of a depot site reaction was recorded by psychiatric nursing staff on a standardised form.ResultsSeventeen per cent of patients were found to have clinically significant depot site reactions. Such reactions were associated with increased frequency of injection and increased total volume of depot administered in the previous 12 months. The severity of a depot site reaction was unrelated to the concentration of depot preparation administered.Clinical implicationsDepot site reactions may be reduced by maximising the interval between injections and using low volume (highly concentrated) preparations of depot neuroleptic medication.
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Lim MWZ, Lee J. Determinants of Health-Related Quality of Life in Schizophrenia: Beyond the Medical Model. Front Psychiatry 2018; 9:712. [PMID: 30618882 PMCID: PMC6305274 DOI: 10.3389/fpsyt.2018.00712] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 12/04/2018] [Indexed: 01/05/2023] Open
Abstract
Background: Improving Quality of Life (QoL) in Schizophrenia is an important treatment objective in the shift toward person-centered and recovery-oriented care. Health-Related Quality of Life (HRQoL) is a focused aspect of QoL that is directly impacted by healthcare intervention. This aim of the current study was to ascertain the clinical determinants of HRQoL in Schizophrenia and their collective contribution to HRQoL. Methods: 157 stable outpatients with schizophrenia were recruited for this study. Data collected included sociodemographic information and clinical characteristics. HRQoL was assessed on the RAND-36. Psychopathology was assessed on the Positive and Negative Syndrome Scale (PANSS) and functioning measured on the Global Assessment Scale (GAS). Findings: Multiple regression revealed that the Physical Health Component (PHC) of the RAND-36 was associated with positive symptoms (beta = -0.218, p = 0.005) and presence of psychiatric comorbidity (beta = -0.215, p = 0.003). The Mental Health Component (MHC) was associated with depressive (beta = -0.364, p < 0.001) and positive (beta = -0.175, p = 0.021,) symptoms. Symptoms, functioning, presence of psychiatric comorbidities, gender and age account for 20.3% of the total variance observed in HRQoL. Conclusion: Depressive and positive symptoms are key clinical determinants of HRQoL in people with schizophrenia. However, the medical model-looking solely at clinical determinants-could not account for a large proportion of variance in HRQoL. Hence, future research beyond the medical model is required to uncover the determinants of HRQoL in Schizophrenia. Identifying these factors will contribute toward developing a holistic and person-centered management plan for people with schizophrenia.
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Affiliation(s)
- Madeline W Z Lim
- Research Division, Institute of Mental Health, Singapore, Singapore
| | - Jimmy Lee
- Research Division, Institute of Mental Health, Singapore, Singapore.,Department of Psychosis, Institute of Mental Health, Singapore, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
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40
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Stanfield AC, Philip RCM, Whalley H, Romaniuk L, Hall J, Johnstone EC, Lawrie SM. Dissociation of Brain Activation in Autism and Schizotypal Personality Disorder During Social Judgments. Schizophr Bull 2017; 43:1220-1228. [PMID: 29088456 PMCID: PMC5737648 DOI: 10.1093/schbul/sbx083] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Background There are overlaps between autism and schizophrenia but these are particularly pronounced, especially in social domains, for higher functioning individuals with autism spectrum disorders (ASD) or schizotypal personality disorder (SPD). It is not known whether these overlapping social deficits result from shared or distinct brain mechanisms. We therefore compared social cognition in ASD and SPD using functional magnetic resonance imaging (fMRI). Methods Twenty-one individuals with SPD, 28 with ASD and 33 controls were compared with respect to clinical symptoms using the Positive and Negative Syndrome Scale; social cognition, using a social judgment task and Ekman 60 faces task; and brain activation using an fMRI task of social judgment. Results The ASD and SPD groups showed few differences in symptoms or social cognition. However, fMRI showed that, compared to ASD, the SPD group showed significantly greater activation during social compared to gender judgments in the amygdala and 3 clusters: right posterior cerebellum, extending into fusiform and inferior temporal gyri; left posterior cerebellum; and left intraparietal sulcus extending through medial portions of the temporal gyri into the fusiform gyrus (all P < .05 family-wise error corrected). Control activations lay between the ASD and SPD groups. Conclusions Although social cognitive deficits in ASD and SPD appear superficially similar they are the result of different brain mechanisms. These findings have implications for therapeutic interventions targeted at social dysfunction in these conditions.
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Affiliation(s)
- Andrew C Stanfield
- Patrick Wild Centre, University of Edinburgh, Edinburgh, UK
- Division of Psychiatry, University of Edinburgh, Edinburgh, UK
| | - Ruth C M Philip
- Division of Psychiatry, University of Edinburgh, Edinburgh, UK
- Tailor Ed Foundation, Edinburgh, UK
| | - Heather Whalley
- Division of Psychiatry, University of Edinburgh, Edinburgh, UK
| | - Liana Romaniuk
- Division of Psychiatry, University of Edinburgh, Edinburgh, UK
| | - Jeremy Hall
- Institute of Psychological Medicine and Clinical Neurosciences, University of Cardiff, Cardiff, UK
| | - Eve C Johnstone
- Division of Psychiatry, University of Edinburgh, Edinburgh, UK
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Abstract
BACKGROUND The World Health Organization (WHO) Model Lists of Essential Medicines lists chlorpromazine as one of its five medicines used in psychotic disorders. OBJECTIVES To determine chlorpromazine dose response and dose side-effect relationships for schizophrenia and schizophrenia-like psychoses. SEARCH METHODS We searched the Cochrane Schizophrenia Group's Study-Based Register of Trials (December 2008; 2 October 2014; 19 December 2016). SELECTION CRITERIA All relevant randomised controlled trials (RCTs) comparing low doses of chlorpromazine (≤ 400 mg/day), medium dose (401 mg/day to 800 mg/day) or higher doses (> 800 mg/day) for people with schizophrenia, and which reported clinical outcomes. DATA COLLECTION AND ANALYSIS We included studies meeting review criteria and providing useable data. Review authors extracted data independently. For dichotomous data, we calculated fixed-effect risk ratios (RR) and their 95% confidence intervals (CIs). For continuous data, we calculated mean differences (MD) and their 95% CIs based on a fixed-effect model. We assessed risk of bias for included studies and graded trial quality using GRADE (Grading of Recommendations Assessment, Development and Evaluation). MAIN RESULTS As a result of searches undertaken in 2014, we found one new study and in 2016 more data for already included studies. Five relevant studies with 1132 participants (585 are relevant to this review) are now included. All are hospital-based trials and, despite over 60 years of chlorpromazine use, have durations of less than six months and all are at least at moderate risk of bias. We found only data on low-dose (≤ 400 mg/day) versus medium-dose chlorpromazine (401 mg/day to 800 mg/day) and low-dose versus high-dose chlorpromazine (> 800 mg/day).When low-dose chlorpromazine (≤ 400 mg/day) was compared to medium-dose chlorpromazine (401 mg/day to 800 mg/day), there was no clear benefit of one dose over the other for both global and mental state outcomes (low-quality and very low-quality evidence). There was also no clear evidence for people in one dosage group being more likely to leave the study early, over the other dosage group (moderate-quality evidence). Similar numbers of participants from each group experienced agitation and restlessness (very low-quality evidence). However, significantly more people in the medium-dose group (401 mg/day to 800 mg/day) experienced extrapyramidal symptoms in the short term (2 RCTS, n = 108, RR 0.47, 95% CI 0.30 to 0.74, moderate-quality evidence). No data for death were available.When low-dose chlorpromazine (≤ 400 mg/day) was compared to high-dose chlorpromazine (> 800 mg/day), data from one study with 416 patients were available. Clear evidence of a benefit of the high dose was found with regards to global state. The low-dose group had significantly fewer people improving (RR 1.13, 95% CI 1.01 to 1.25, moderate-quality evidence). There was also a marked difference between the number of people leaving the study from each group for any reason, with significantly more people leaving from the high-dose group (RR 0.60, 95% CI 0.40 to 0.89, moderate-quality evidence). More people in the low-dose group had to leave the study due to deterioration in behaviour (RR 2.70, 95% CI 1.34 to 5.44, low-quality evidence). There was clear evidence of a greater risk of people experiencing extrapyramidal symptoms in general in the high-dose group (RR 0.43, 95% CI 0.32 to 0.59, moderate-quality evidence). One death was reported in the high-dose group yet no effect was shown between the two dosage groups (RR 0.33, 95% CI 0.01 to 8.14, moderate-quality evidence). No data for mental state were available. AUTHORS' CONCLUSIONS The dosage of chlorpromazine has changed drastically over the past 50 years with lower doses now being the preferred of choice. However, this change was gradual and arose not due to trial-based evidence, but due to clinical experience and consensus. Chlorpromazine is one of the most widely used antipsychotic drugs yet appropriate use of lower levels has come about after many years of trial and error with much higher doses. In the absence of high-grade evaluative studies, clinicians have had no alternative but to learn from experience. However, such an approach can lack scientific rigor and does not allow for proper dissemination of information that would assist clinicians find the optimum treatment dosage for their patients. In the future, data for recently released medication should be available from high-quality trials and studies to provide optimum treatment to patients in the shortest amount of time.
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Affiliation(s)
| | - Xiaomeng Liu
- Utrecht UniversityPostbus 85500UtrechtNetherlands3508 GA
| | - Saskia De Haan
- GGZ Noord Holland NoordOude Hoeverweg 10AlkmaarNetherlands1816 BT
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Uranova NA, Kolomeets NS, Vikhreva OV, Zimina IS, Rakhmanova VI, Orlovskaya DD. Ultrastructural changes of myelinated fibers in the brain in continuous and attack-like paranoid schizophrenia. Zh Nevrol Psikhiatr Im S S Korsakova 2017; 117:104-109. [DOI: 10.17116/jnevro201711721104-109] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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43
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Kumar V, Rao NP, Narasimha V, Sathyanarayanan G, Muralidharan K, Varambally S, Venkatasubramanian G, Gangadhar BN. Antipsychotic dose in maintenance treatment of schizophrenia: A retrospective study. Psychiatry Res 2016; 245:311-316. [PMID: 27567194 DOI: 10.1016/j.psychres.2016.08.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 08/01/2016] [Accepted: 08/13/2016] [Indexed: 12/25/2022]
Abstract
The dose of antipsychotic required for acute phase treatment of schizophrenia is well established, but there is no consensus on dose required for maintenance phase. Current guidelines do not provide definitive recommendations on the dose of antipsychotics needed in the maintenance treatment of schizophrenia, possibly due to limited research. In this retrospective study, minimum antipsychotic dose prescribed in maintenance treatment of schizophrenia in a real life situation was examined. Schizophrenia patients having Clinical Global Impression - Severity (CGI-S)≤3 for at-least six months during the maintenance phase treatment were included (n=163). The medical records of these patients were reviewed and the antipsychotic dose prescribed for acute and maintenance phase treatment was recorded. The mean antipsychotic dose used during maintenance treatment was approximately 30% lower than the dose used during acute phase. Importantly, about 40% of the subjects maintained well with a dose lesser than the recommended therapeutic range. Earlier age at onset and longer duration of illness were associated with higher antipsychotic dose requirement during the maintenance phase treatment. These findings could have important clinical implications if replicated in systematic prospective studies.
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Affiliation(s)
- Vijay Kumar
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Naren P Rao
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India.
| | - Venkatalakshmi Narasimha
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Gopinath Sathyanarayanan
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Kesavan Muralidharan
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Shivarama Varambally
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Ganesan Venkatasubramanian
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
| | - Bangalore N Gangadhar
- The Schizophrenia Clinic, Department of Psychiatry, National Institute of Mental Health and Neurosciences, Bangalore, India
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Barnes TRE, Roy DH, Gaind R. Open Study to Determine Appropriate Maintenance Dosage of Pimozide in Patients with Chronic Schizophrenia. Proc R Soc Med 2016. [DOI: 10.1177/0035915777070s1009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- T R E Barnes
- Academic Unit of Clinical Psychopharmacology, Guy's Hospital Medical School, London
| | - D H Roy
- Academic Unit of Clinical Psychopharmacology, Guy's Hospital Medical School, London
| | - R Gaind
- Academic Unit of Clinical Psychopharmacology, Guy's Hospital Medical School, London
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45
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Vikhreva OV, Rakhmanova VI, Orlovskaya DD, Uranova NA. Ultrastructural alterations of oligodendrocytes in prefrontal white matter in schizophrenia: A post-mortem morphometric study. Schizophr Res 2016; 177:28-36. [PMID: 27156647 DOI: 10.1016/j.schres.2016.04.023] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 04/13/2016] [Accepted: 04/15/2016] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Neuroimaging studies showed abnormalities in frontal white matter (WM) in schizophrenia that were associated with clinical symptoms. Previously, we reported ultrastructural alterations of myelinated fibers and reduction in the numerical density of oligodendrocytes in BA 10 WM in patients with schizophrenia. We aimed to perform a qualitative and morphometric study of the ultrastructure of oligodendrocytes in BA 10 WM in schizophrenia and in normal controls. METHODS The study was performed using electron microscopy and morphometry. Size, volume density (Vv) and the number (N) of organelles of oligodendrocytes were estimated in 21 patients with schizophrenia and 20 normal controls. The data were examined using the Kolmogorov-Smirnov test for normality. Pearson correlation analysis was performed to assess possible correlations between the parameters measured and age, post-mortem interval, neuroleptic treatment and duration of the disease. Comparisons between the schizophrenia patients and controls were performed using ANCOVA tests. RESULTS We found oligodendrocyte swelling, vacuolation, paucity of ribosomes and mitochondria and accumulation of lipofuscin granules in schizophrenia as compared to controls. Morphometry detected a significant reduction in Vv and N of mitochondria and the increase in Vv and N of lipofuscin granules and vacuoles in oligodendrocytes in the schizophrenic group as compared to controls. CONCLUSION Alterations of oligodendrocytes in schizophrenia provide evidence for the disturbance of their energy, lipid and protein metabolism in prefrontal WM. Oligodendrocyte abnormalities might disturb axonal integrity and circuitry and contribute to the pathophysiology of schizophrenia.
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Affiliation(s)
- O V Vikhreva
- Laboratory of Clinical Neuropathology, Mental Health Research Center, Moscow, Russia
| | - V I Rakhmanova
- Laboratory of Clinical Neuropathology, Mental Health Research Center, Moscow, Russia
| | - D D Orlovskaya
- Laboratory of Clinical Neuropathology, Mental Health Research Center, Moscow, Russia
| | - N A Uranova
- Laboratory of Clinical Neuropathology, Mental Health Research Center, Moscow, Russia.
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Rekhi G, Khyne TT, Lee J. Estimating 10-year cardiovascular disease risk in Asian patients with schizophrenia. Gen Hosp Psychiatry 2016; 43:46-50. [PMID: 27796257 DOI: 10.1016/j.genhosppsych.2016.09.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 09/16/2016] [Accepted: 09/20/2016] [Indexed: 01/18/2023]
Abstract
OBJECTIVE This study aims to describe the cardiovascular risk profile of Asian patients with schizophrenia. METHODS Data was extracted from the databases of 139 patients with schizophrenia and 206 controls from two previous studies conducted at the Institute for Mental Health (IMH), Singapore. Their medical and smoking histories were obtained, and anthropometric parameters measured. Framingham risk score (FRS) calculator using body mass index was used to compute the 10-year cardiovascular disease risk (FRSBMI) and the vascular age (VABMI) for each participant. Data on fasting lipids were available for 80 patients and all the controls; hence the FRS for lipids (FRSlipids) and VA (VAlipids) were also computed. The difference between VA and actual age was computed as VAdiff. RESULTS The 10-year CVD risk and VAdiff based on lipids as well as BMI were significantly higher for patients compared to controls (all p<0.01). There was a strong correlation between FRSlipids and FRSBMI (r=0.97, p<0.001). Significantly higher numbers of patients than controls were smokers and obese; and reported having dyslipidaemia. CONCLUSIONS We found a high risk of CVD in patients with schizophrenia as compared to controls; and conclude that patients with schizophrenia need regular physical health monitoring, especially for cardiovascular risk factors.
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Affiliation(s)
- Gurpreet Rekhi
- Research Division, Institute of Mental Health, 10 Buangkok View, Singapore 539747, Singapore.
| | - Toe Toe Khyne
- Research Division, Institute of Mental Health, 10 Buangkok View, Singapore 539747, Singapore
| | - Jimmy Lee
- Research Division, Institute of Mental Health, 10 Buangkok View, Singapore 539747, Singapore; Department of General Psychiatry 1, Institute of Mental Health, 10 Buangkok View, Singapore 539747, Singapore; Office of Clinical Sciences, Duke-National University of Singapore Graduate Medical School, 8 College Road, Singapore 169857, Singapore
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47
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Savushkina OK, Tereshkina EB, Prokhorova TA, Vorobyeva EА, Boksha IS, Burbaeva GS. [Creatine kinase isoform B distribution in the brain in schizophrenia]. Zh Nevrol Psikhiatr Im S S Korsakova 2016; 116:62-68. [PMID: 27735901 DOI: 10.17116/jnevro20161169162-68] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
AIM To compare patterns of brain isoform creatine phosphokinase (CPK B) distributions in post-mortem brain from patients with schizophrenia (Sch) and patients with somatic diseases (controls). MATERIAL AND METHODS Extracts of readily soluble and membrane-associated proteins were prepared from post-mortem samples of prefrontal cortex (Brodmann area 10), anterior (area 24) and posterior (area 23) cingulate cortex, hippocampus and cerebellum cortex from patients with Sch and control group (the samples were matched by age and postmortem interval). CPK enzymatic activity was measured by determination of inorganic phosphate, amounts of immunoreative CPK В were estimated by ECL-Western blotting using monoclonal antibodies. RESULTS A significant decrease in CPK activity and amounts of immunoreative CPK В was observed in fractions of readily soluble proteins in all studied brain structures of patients with Sch compared to controls (p<0.01). Significant differences in CPK activity were found in membrane-associated protein fractions from the hippocampus (p<0.01), but not from the cingulate cortex (areas 23 and 24), of Sch patients compared with controls, whereas no difference between groups was found in levels of immunoreactive CPK B in membrane-associated protein fractions from the cingulate cortex (areas 23 and 24) and hippocampus. The decrease in the amount of CPK B in the frontal cortex of patients with Sch was confirmed by purification of CPK B active dimer from brain samples of patients with Sch and controls. CONCLUSION Changes in the levels of CPK brain isoform in the brain of patients with Sch (the decrease in CPK activity and amounts in various brain structures at different extents) lead to the substantial alteration of CPK distribution pattern among the brain areas studied, result in the disturbance of the brain energy metabolism and contribute to Sch pathogenesis.
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Affiliation(s)
| | | | | | | | - I S Boksha
- Mental Health Research Centre, Moscow, Russia
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48
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Abstract
BACKGROUND Dose equivalents of antipsychotics are an important but difficult to define concept, because all methods have weaknesses and strongholds. METHODS We calculated dose equivalents based on defined daily doses (DDDs) presented by the World Health Organisation's Collaborative Center for Drug Statistics Methodology. Doses equivalent to 1mg olanzapine, 1mg risperidone, 1mg haloperidol, and 100mg chlorpromazine were presented and compared with the results of 3 other methods to define dose equivalence (the "minimum effective dose method," the "classical mean dose method," and an international consensus statement). RESULTS We presented dose equivalents for 57 first-generation and second-generation antipsychotic drugs, available as oral, parenteral, or depot formulations. Overall, the identified equivalent doses were comparable with those of the other methods, but there were also outliers. CONCLUSIONS The major strength of this method to define dose response is that DDDs are available for most drugs, including old antipsychotics, that they are based on a variety of sources, and that DDDs are an internationally accepted measure. The major limitations are that the information used to estimate DDDS is likely to differ between the drugs. Moreover, this information is not publicly available, so that it cannot be reviewed. The WHO stresses that DDDs are mainly a standardized measure of drug consumption, and their use as a measure of dose equivalence can therefore be misleading. We, therefore, recommend that if alternative, more "scientific" dose equivalence methods are available for a drug they should be preferred to DDDs. Moreover, our summary can be a useful resource for pharmacovigilance studies.
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Affiliation(s)
| | - Myrto Samara
- Department of Psychiatry and Psychotherapy, Technische Universität München, Munich, Germany
| | - Stephan Heres
- Department of Psychiatry and Psychotherapy, Technische Universität München, Munich, Germany
| | - John M Davis
- Psychiatric Institute, University of Illinois at Chicago, Chicago, IL; Maryland Psychiatric Research Center, University of Maryland, Baltimore, MD
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49
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Chan RC, Gooding DC, Shi HS, Geng FL, Xie DJ, Yang ZY, Liu WH, Wang Y, Yan C, Shi C, Lui SS, Cheung EF. Evidence of structural invariance across three groups of Meehlian schizotypes. NPJ SCHIZOPHRENIA 2016; 2:16016. [PMID: 27336057 PMCID: PMC4900100 DOI: 10.1038/npjschz.2016.16] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/01/2016] [Accepted: 03/14/2016] [Indexed: 11/26/2022]
Abstract
According to Meehl’s model of schizotypy, there is a latent personality organization associated with the diathesis for schizophrenia that can be identified in several ways. We sought to examine the structural invariance of four Chapman psychosis–proneness scales (CPPS) across three groups of putative schizotypes, namely, clinically-, biologically-, and psychometrically-identified schizotypes. We examined the factor structure of the Perceptual Aberration (PER), Magical Ideation (MIS), Revised Social Anhedonia (RSAS), and Revised Physical Anhedonia (RPAS) scales in 196 schizophrenia patients, 197 non-psychotic first-degree relatives, and 1,724 non-clinical young adults. The confirmatory factor analyses indicated that the best-fitting model was one in which there is a two-factor model with negative schizotypy (RSAS and RPAS) and positive schizotypy (PER and MIS). All three samples fit the model well, with Comparative Fit Indices>0.95 and Tucker Lewis Indices>0.90. The root mean square error of approximations were all small (P values⩽0.01). We also observed that for both anhedonia scales, the groups’ mean scale scores varied in the hypothesized direction, as predicted by Meehl’s model of schizotypy. All three Chinese samples, namely, the patients (clinical schizotypes), relatives (biologically-identified schizotypes), and non-clinical young adults (containing psychometrically-identified schizotypes) showed the same factorial structure. This finding supports the suitability of the CPPS for cross-cultural and/or genetic investigations of schizotypy.
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Affiliation(s)
- Raymond Ck Chan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences , Beijing, China
| | - Diane C Gooding
- Department of Psychology, University of Wisconsin-Madison, Madison, WI, USA; Department of Psychiatry, University of Wisconsin-Madison, Madison, WI, USA
| | - Hai-Song Shi
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; The University of Chinese Academy of Sciences, Beijing, China
| | - Fu-Lei Geng
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; The University of Chinese Academy of Sciences, Beijing, China
| | - Dong-Jie Xie
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; The University of Chinese Academy of Sciences, Beijing, China
| | - Zhuo-Ya Yang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; The University of Chinese Academy of Sciences, Beijing, China
| | - Wen-Hua Liu
- Faculty of Health Management, Guangzhou Medical University , Guangzhou, China
| | - Yi Wang
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences , Beijing, China
| | - Chao Yan
- Key Laboratory of Brain Functional Genomics (MOE & STCSM), School of Psychology and Cognitive Science, East China Normal University , Shanghai, China
| | - Chuan Shi
- Peking University Sixth Hospital, Beijing, China; Peking University Institute of Mental Health, Beijing, China
| | - Simon Sy Lui
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; The University of Chinese Academy of Sciences, Beijing, China; Department of General Adult Psychiatry, Castle Peak Hospital, Hong Kong Special Administrative Region, Hong Kong, China
| | - Eric Fc Cheung
- Department of General Adult Psychiatry, Castle Peak Hospital, Hong Kong Special Administrative Region , Hong Kong, China
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50
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Fung G, Deng Y, Zhao Q, Li Z, Qu M, Li K, Zeng YW, Jin Z, Ma YT, Yu X, Wang ZR, Shum DHK, Chan RCK. Distinguishing bipolar and major depressive disorders by brain structural morphometry: a pilot study. BMC Psychiatry 2015; 15:298. [PMID: 26590556 PMCID: PMC4655080 DOI: 10.1186/s12888-015-0685-5] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 11/18/2015] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND The clinical presentation of common symptoms during depressive episodes in bipolar disorder (BD) and major depressive disorder (MDD) poses challenges for accurate diagnosis. Disorder-specific neuroanatomical features may aid the development of reliable discrimination between these two clinical conditions. METHODS For our sample of 16 BD patients, 19 MDD patients and 29 healthy volunteers, we adopted vertex-wise cortical based brain imaging techniques to examine cortical thickness and surface area, two components of cortical volume with distinct genetic determinants. Based on specific characteristics of neuroanatomical features, we then used support vector machine (SVM) algorithm to discriminate between patients with BD and MDD. RESULTS Compared to MDD patients, BD patients showed significantly larger cortical surface area in the left bankssts, precuneus, precentral, inferior parietal, superior parietal and the right middle temporal gyri. In addition, larger volumes of subcortical regions were found in BD patients. In SVM discriminative analyses, the overall accuracy was 74.3 %, with a sensitivity of 62.5 % and a specificity of 84.2 % (p = 0.028). Compared to controls, larger surface area in the temporo-parietal regions were observed in BD patients, and thinner cortices in fronto-temporal regions were observed in MDD patients, especially in the medial orbito-frontal area. CONCLUSIONS These findings have demonstrated distinct spatially distributed variations in cortical thickness and surface area in patients with BD and MDD, suggesting potentially varying etiological and neuropathological processes in these two conditions. The employment of multimodal classification on disorder-specific biological features has shed light to the development of potential classification tools that could aid diagnostic decisions.
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Affiliation(s)
- Germaine Fung
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China. .,Department of Psychology, the Chinese University of Hong Kong, Hong Kong Special Administrative Region, China.
| | - Yi Deng
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China. .,Cognitive Analysis & Brain Imaging Laboratory, MIND Institute, University of California, Davis, USA.
| | - Qing Zhao
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China. .,School of Applied Psychology and Behavioral Basis of Health Program, Griffith Health Institute, Griffith University, Brisbane, Australia.
| | - Zhi Li
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China. .,University of Chinese Academy of Sciences, Beijing, China.
| | - Miao Qu
- Department of Encephalopathy, Beijing University of Chinese Medicine the 3rd Affiliated Hospital, Beijing, China.
| | - Ke Li
- MRI Center of Beijing 306 Hospital, Beijing, China.
| | - Ya-wei Zeng
- MRI Center of Beijing 306 Hospital, Beijing, China
| | - Zhen Jin
- MRI Center of Beijing 306 Hospital, Beijing, China.
| | - Yan-tao Ma
- Peking University Sixth Hospital, Beijing, China ,Peking University Institute of Mental Health, Beijing, China ,Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
| | - Xin Yu
- Peking University Sixth Hospital, Beijing, China. .,Peking University Institute of Mental Health, Beijing, China. .,Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China.
| | - Zhi-ren Wang
- Center for Biological Psychiatry, Beijing Hui-Long-Guan Hospital, Beijing, China
| | - David H. K. Shum
- School of Applied Psychology and Behavioral Basis of Health Program, Griffith Health Institute, Griffith University, Brisbane, Australia ,Menzies Health Institute Queensland and School of Applied Psychology, Griffith University, Gold Coast, Australia
| | - Raymond C. K. Chan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China ,Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Beijing, 100101 China
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