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Maurício D, Rodrigues-Silva N. The scratch card gambler: a hidden reality. J Gambl Stud 2023; 39:1099-1110. [PMID: 35921003 DOI: 10.1007/s10899-022-10136-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 05/12/2022] [Accepted: 06/05/2022] [Indexed: 12/01/2022]
Abstract
Scratch cards-otherwise known as scratch tickets or instant lotteries-are a highly accessible type of lottery, due to its relative accessibility and affordability. In Portugal, the popularity of scratch cards has experienced substantial growth, with almost no regulatory reaction whatsoever. This study aims to describe the sociodemographic characteristics of scratch card gamblers, prevalent gambling habits, and their perceptions regarding scratch card gambling. This study also determines the constancy of pathological scratch card gambling, and the possible impact of regulatory measures. We found that about half of the participants studied were at risk of pathological gambling and scratch cards seem to have a clear potential for enticing higher spending in vulnerable consumers, compared to other forms of gambling games. Perception biases regarding gambling are frequent and almost no one afflicted seeks help. Regulatory measures are crucial to regulate potential problematic behaviors, specifically in high-risk persons. There is an urgent need to act, made clear by both present findings and numerous precedent warnings regarding scratch card gambling hazards.
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Affiliation(s)
- Daniela Maurício
- Faculdade de Ciências da Saúde, Universidade da Beira Interior, Covilhã, Portugal
- Centro Hospitalar Universitário da Cova da Beira, Covilhã, Portugal
| | - Nuno Rodrigues-Silva
- Faculdade de Ciências da Saúde, Universidade da Beira Interior, Covilhã, Portugal.
- Unidade de Saúde Mental, Hospital-Escola da Universidade Fernando Pessoa, Gondomar, Portugal.
- Instituto de Investigação, Inovação e Desenvolvimento, Fundação Fernando Pessoa (FP-I3ID), Porto, Portugal.
- Serviço de Intervenção nos Comportamentos Aditivos e Dependências*, ET Cedofeita - CRI Porto Central, Porto, Portugal.
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Shoib S, Chandradasa M, Saeed F, Armiya'u AY, Roza TH, Ori D, Jakhar J, Rodrigues-Silva N, Banerjee D. Suicide, Stigma and COVID-19: A Call for Action From Low and Middle Income Countries. Front Psychiatry 2022; 13:894524. [PMID: 35845441 PMCID: PMC9283681 DOI: 10.3389/fpsyt.2022.894524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 06/09/2022] [Indexed: 12/31/2022] Open
Abstract
Suicide is a global health issue that needs to be addressed. The COVID-19 pandemic has resulted in an increased mental health burden. Stigma has obstructed efforts to prevent suicide as individuals who need urgent support do not seek appropriate help. The influence of stigma is likely to grow in tandem with the COVID-19 pandemic. The stigmatization of persons with mental illnesses is widespread worldwide, and it has substantial effects on both the individual and society. Our viewpoints aim to address the probable link between stigma and suicide in the wake of the current pandemic and propose ideas for reducing suicide-related stigma.
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Affiliation(s)
- Sheikh Shoib
- Department of Psychiatry, Jawahar Lal Nehru Memorial Hospital, Kashmir, India
| | | | - Fahimeh Saeed
- Department of Psychiatry, Psychosis Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Aishatu Yusha'u Armiya'u
- Department of Psychiatry, College of Medical Sciences, Abubakar Tafawa Balewa University, Bauchi, Nigeria
| | - Thiago Henrique Roza
- Department of Psychiatry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Dorottya Ori
- Department of Mental Health, Heim Pal National Pediatric Institute, Budapest, Hungary.,Institute of Behavioural Sciences, Semmelweis University, Budapest, Hungary
| | | | - Nuno Rodrigues-Silva
- Mental Health Unit, Hospital School of the University Fernando Pessoa, Gondomar, Portugal.,Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal
| | - Debanjan Banerjee
- Consultant Geriatric Psychiatrist, APOLLO Multispecialty Hospitals, Kolkata, India
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3
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Martins-Ascencao R, Rodrigues-Silva N, Trovão N. Absence of Longer Reorientation Times in Patients Undergoing Electroconvulsive Therapy and Concomitant Treatment with Lithium. Clin Psychopharmacol Neurosci 2021; 19:695-704. [PMID: 34690124 PMCID: PMC8553532 DOI: 10.9758/cpn.2021.19.4.695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/06/2020] [Accepted: 11/13/2020] [Indexed: 11/18/2022]
Abstract
Objective Lithium is a drug of choice in the treatment of bipolar disorder and refractory depressive disorders. However, previous research suggests lithium has a negative cognitive impact in recovery from electroconvulsive therapy (ECT) and a higher risk of delirium, so patients are often required to stop taking lithium before ECT, despite risk of relapse. We studied the cognitive impact of serum lithium levels in patients undergoing ECT. Methods This was an observational prospective study. Serum lithium levels, thyroid and biochemical parameters were measured prior to each ECT session. Time elapsed from the anesthetic induction to the electrical stimulus and then to the patients’ reorientation was recorded, as well as the motor seizure duration and electroencephalogram (EEG) seizure duration. A statistical analysis using a linear mixed model was run while adjusting for confounding factors. Results Ten participants underwent a total of 86 ECT sessions (41% right unilateral ultrabrief pulse, and 59% bilateral brief pulse). A negative interaction between lithium levels and reorientation time was found among those doing bilateral brief pulse ECT. No association was observed in patients doing unilateral ultrabrief pulse ECT. No significant relationship was observed between lithium and both motor and EEG-assessed seizure duration. Conclusion This study suggests that low to moderate serum lithium levels (< 0.7 mmol/L) might have no harmful cognitive effects in patients under right unilateral ultrabrief pulse and bilateral brief pulse ECT.
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Affiliation(s)
- Ricardo Martins-Ascencao
- Medical Department of the Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal
| | - Nuno Rodrigues-Silva
- Medical Department of the Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal.,ECT Unit, Trofa Saúde Senhor do Bonfim Hospital, Vila do Conde, Portugal.,Conde Ferreira Healthcare Center, Porto, Portugal
| | - Nuno Trovão
- Medical Department of the Faculty of Health Sciences, University of Beira Interior, Covilhã, Portugal.,Department of Psychiatry and Mental Health, Cova da Beira University Hospital Center, Covilhã, Portugal
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Abstract
ABSTRACT Electroconvulsive therapy (ECT) is a treatment of undisputed efficacy for severe and treatment-resistant psychiatric disorders. Notwithstanding extensive data on efficacy and safety, it is significantly underused, corresponding to one of the most stigmatized approaches in psychiatry. The list of problems for which ECT is potentially effective does not include obsessive-compulsive disorder (OCD), resulting in only a few available case reports in the literature in which OCD is the target of this specific therapeutic strategy. The authors describe a patient with refractory OCD for whom ECT was prescribed, with remarkable clinical response and functional improvement. The existence of a clear response to ECT in reported cases of OCD, albeit in a globally small number of patients, should make it essential to identify predictors of ECT response that could assist clinicians in assessing and guiding such cases, particularly those labeled as refractory to treatment.
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Affiliation(s)
- João Martins-Correia
- From the Department of Psychiatry and Mental Health, Local Health Unit of Guarda, Guarda
| | | | - Susana Nunes
- From the Department of Psychiatry and Mental Health, Local Health Unit of Guarda, Guarda
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5
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Kurokawa S, Kishimoto T, Su KP, Chang JPC, Chang HC, Yu X, Rodrigues-Silva N, Nielsen J, Unadkat A, Castle D, Haddad PM, Rocha D, Gadelha A, Kaliora S, Petrides G, Agid O, Tazawa Y, Takamiya A, Horigome T, Kane JM. Psychiatrists' perceptions of medication adherence among patients with schizophrenia: An international survey. Schizophr Res 2019; 211:105-107. [PMID: 31371039 DOI: 10.1016/j.schres.2019.07.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/09/2019] [Accepted: 07/21/2019] [Indexed: 11/26/2022]
Affiliation(s)
- Shunya Kurokawa
- Department of Psychiatry, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Taishiro Kishimoto
- Department of Psychiatry, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan; Department of Psychiatry, The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, 75-59 263rd Street Glen Oaks, New York 11004-1150, United States.
| | - Kuan-Pin Su
- Department of Psychiatry & Mind-Body Interface Laboratory (MBI-Lab), China Medical University Hospital, No.91 Hsueh-Shih Road, Taichung, 40402, Taiwan
| | - Jane Pei-Chen Chang
- Department of Psychiatry & Mind-Body Interface Laboratory (MBI-Lab), China Medical University Hospital, No.91 Hsueh-Shih Road, Taichung, 40402, Taiwan
| | - Hui-Chih Chang
- Department of Psychiatry & Mind-Body Interface Laboratory (MBI-Lab), China Medical University Hospital, No.91 Hsueh-Shih Road, Taichung, 40402, Taiwan
| | - Xin Yu
- Peking University Sixth Hospital, No.51 Hua Yuan Bei Road, Haidian District, Beijing, 100191, China
| | - Nuno Rodrigues-Silva
- Department of Psychiatry and Mental Health, Cova da Beira University Healthcare Center, Quinta do Alvito, Covilhã, 6200-251, Portugal
| | - Jimmi Nielsen
- Mental health Centre Glostrup, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, Copenhagen, 2100, Denmark
| | - Anish Unadkat
- The University of Melbourne and St Vincent's Hospital Melbourne, 41 Victoria Parade, Fitzroy, Melbourne, 3065, Australia
| | - David Castle
- The University of Melbourne and St Vincent's Hospital Melbourne, 41 Victoria Parade, Fitzroy, Melbourne, 3065, Australia
| | - Peter M Haddad
- Department of Psychiatry, University of Manchester, Oxford Rd, Manchester, M13 9PL, UK
| | - Deyvis Rocha
- Departamento de Psiquiatria, Universidade Federal de São Paulo (UNIFESP), 650 - 3° andar, São Paulo 04039-032, Brazil
| | - Ary Gadelha
- Departamento de Psiquiatria, Universidade Federal de São Paulo (UNIFESP), 650 - 3° andar, São Paulo 04039-032, Brazil
| | - Styliani Kaliora
- Department of Psychiatry, The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, 75-59 263rd Street Glen Oaks, New York 11004-1150, United States
| | - Georgios Petrides
- Department of Psychiatry, The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, 75-59 263rd Street Glen Oaks, New York 11004-1150, United States
| | - Ofer Agid
- Schizophrenia Program, Centre for Addiction and Mental Health (CAMH), Department of Psychiatry, Faculty of Medicine, University of Toronto, 250 College Street, CS 732, Toronto, ON M5T 1R8, Canada
| | - Yuki Tazawa
- Department of Psychiatry, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Akihiro Takamiya
- Department of Psychiatry, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Toshiro Horigome
- Department of Psychiatry, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - John M Kane
- Department of Psychiatry, The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, 75-59 263rd Street Glen Oaks, New York 11004-1150, United States
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Silva GA, Pereira RM, Rodrigues-Silva N, Souza TC, Ferreira DO, Queiroz EA, Silva GAR, Picanço MC. Wax Removal and Diamondback Moth Performance in Collards Cultivars. Neotrop Entomol 2017; 46:571-577. [PMID: 28478539 DOI: 10.1007/s13744-017-0493-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 02/03/2017] [Indexed: 06/07/2023]
Abstract
The diamondback moth Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae) is an herbivorous specialist on Brassicaceae species. Brassicas spp. plants developed a range of defenses (chemical, physical, and morphological) to prevent herbivores attack. In this study, we reported the antixenotic and antibiotic effects of outermost layer of two species of epicuticular wax of Brassicaceae, Brassica oleracea L. var. "Santo Antônio," and Hybrid Kope F1 100MX, on larvae and adult of P. xylostella. In the choice experiment, P. xylostella adults showed an oviposition preference for collard cultivars Santo Antônio (control) and Hybrid Kope F1 100MX with wax removal. In the no-choice experiment, oviposition was 6.4 times higher in the Hybrid Kope F1 100MX with wax removal than without wax removal. There were significant differences among larvae feeding on leaf disks of Hybrid Kope F1 100MX in the treatments with (65.3 mg) and without wax removal (23.5 mg). The net reproduction rate (R 0 ), and intrinsic (rm) and finite rates of increase (λ) of P. xylostella in the cv. Santo Antônio were bigger in the treatment without wax removal (R 0 = 50.4, rm = 0.23 and λ = 1.26) than treatment with wax removal (R 0 = 28.5, rm = 0.20 and λ = 1.22). However, only the R 0 value was affected by mechanical wax removal in the Hybrid Kope F1 100MX (with wax removal R 0 = 43.3 and without wax removal R 0 = 30.8). In conclusion, the results indicate that collard's wax is important to accessibility and development of P. xylostella, and its removal changes the resistance of collard's varieties to P. xylostella.
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Affiliation(s)
- G A Silva
- Lab Entomologia Agrícola, Depto de Entomologia, Univ Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
- Lab Entomologia e Fitopatologia, Centro de Ciências e Tecnologias Agropecuárias, UENF, Campos dos Goytacazes, RJ, 28013-602, Brazil.
| | - R M Pereira
- Lab Entomologia Agrícola, Depto de Entomologia, Univ Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - N Rodrigues-Silva
- Lab Entomologia Agrícola, Depto de Entomologia, Univ Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - T C Souza
- Lab Entomologia Agrícola, Depto de Entomologia, Univ Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - D O Ferreira
- Lab Entomologia Agrícola, Depto de Entomologia, Univ Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - E A Queiroz
- Lab Entomologia Agrícola, Depto de Entomologia, Univ Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - G A R Silva
- Lab Entomologia Agrícola, Depto de Entomologia, Univ Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - M C Picanço
- Lab Entomologia Agrícola, Depto de Entomologia, Univ Federal de Viçosa, Viçosa, Minas Gerais, Brazil
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Santos-Amaya OF, Tavares CS, Rodrigues JVC, Souza TC, Rodrigues-Silva N, Guedes RNC, Alves AP, Pereira EJG. Magnitude and Allele Frequency of Cry1F Resistance in Field Populations of the Fall Armyworm (Lepidoptera: Noctuidae) in Brazil. J Econ Entomol 2017; 110:1770-1778. [PMID: 28535300 DOI: 10.1093/jee/tox146] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Indexed: 06/07/2023]
Abstract
Bacillus thuringiensis (Bt) corn producing the Cry1F protein was the first highly efficacious Bt corn deployed against the fall armyworm Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in Brazil, but reduced efficacy of this technology against the fall armyworm has been reported in some regions of the country. Here, we surveyed Cry1F resistance allele frequency and susceptibility of eight S. frugiperda populations collected in 2013 from non-Bt fields in different regions of Brazil. In F1 screen experiments, the overall frequency of the Cry1F resistance alleles in Brazilian populations was estimated at 0.24, with 95% credibility interval between 0.18 and 0.25. In concentration-response bioassays, five of the eight populations surveyed exhibited significant resistance levels, which were over 32 times higher than that of the standard susceptible laboratory strain. The estimates of Cry1F resistance allele frequency were positively correlated with those of median effective or lethal concentrations (i.e., EC50 or LC50). These results show that the allelic frequency and the magnitude of Cry1F resistance are high in field populations of S. frugiperda in Brazil, indicating a challenging situation for resistance management.
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Affiliation(s)
- O F Santos-Amaya
- Departament of Entomology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - C S Tavares
- Departament of Entomology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - J V C Rodrigues
- Departament of Entomology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - T C Souza
- Departament of Entomology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - N Rodrigues-Silva
- Departament of Entomology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - R N C Guedes
- Departament of Entomology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
| | - A P Alves
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA 50131
| | - E J G Pereira
- Departament of Entomology, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
- National Institute of Science and Technology in Plant-Pest Interactions, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
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Abstract
Background: Medical comorbidity is associated with worse psychiatric outcomes, reduced functioning and higher services use, including inpatient psychiatric care.Aim: We explored the relation between medical comorbidity and length of stay, adjusting for potential confounders.Methods: We retrospectively analyzed an administrative database comprising all inpatient admissions between 2005 and 2014 at the Department of Psychiatry and Mental Health at Vila Nova de Gaia/Espinho Healthcare Center, Vila Nova de Gaia - Portugal. Psychiatric diagnosis and medical comorbidity were coded according to single-level and multi-level classification schemes, respectively, as proposed by the Clinical Classification Software.Results: We included a total of 4613 psychiatric inpatient admissions. The prevalence of medical comorbidity was 25.4% and it was associated with an average increase of 3.5 days (p < 0.001) in length of stay, comparing to patients without medical comorbidity. After adjusting for potential confounders, such as age, sex and year of discharge, medical comorbidity was associated with a 13% increase in length of stay.Conclusions: Medical comorbidity has measurable effects in inpatient outcomes, such as the length of stay and should be a major focus for intervention, in ambulatory care but also during psychiatric hospitalization.
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Affiliation(s)
- Nuno Rodrigues-Silva
- Department of Psychiatry and Mental Health, Vila Nova de Gaia/Espinho Healthcare Center, Vila Nova de Gaia, Portugal
| | - Lúcia Ribeiro
- Department of Psychiatry and Mental Health, Vila Nova de Gaia/Espinho Healthcare Center, Vila Nova de Gaia, Portugal
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Affiliation(s)
- Nuno Rodrigues-Silva
- Department of Psychiatry and Mental Health, Cova da Beira Healthcare Centre, Covilhã, Portugal
- Central Porto Integrated Care Centre, Service for Intervention in Addictive Behaviours and Dependences, Cedofeita Specialized Treatment Unit, Porto, Portugal
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Rodrigues-Silva N, Venâncio Â. Opioid false-positivity in urine drug screening: levomepromazine cross-reactivity. PSYCHIAT CLIN PSYCH 2017. [DOI: 10.1080/24750573.2017.1293254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Rodrigues-Silva N, Falcão de Almeida T, Araújo F, Molodynski A, Venâncio Â, Bouça J. Use of the word schizophrenia in Portuguese newspapers. J Ment Health 2016; 26:426-430. [DOI: 10.1080/09638237.2016.1207231] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Nuno Rodrigues-Silva
- Department of Psychiatry and Mental Health, Vila Nova de Gaia/Espinho Healthcare Center, Vila Nova de Gaia, Portugal,
| | - Telma Falcão de Almeida
- Department of Psychiatry and Mental Health, Vila Nova de Gaia/Espinho Healthcare Center, Vila Nova de Gaia, Portugal,
| | - Filipa Araújo
- Department of Psychiatry and Mental Health, Vila Nova de Gaia/Espinho Healthcare Center, Vila Nova de Gaia, Portugal,
| | | | - Ângela Venâncio
- Department of Psychiatry and Mental Health, Vila Nova de Gaia/Espinho Healthcare Center, Vila Nova de Gaia, Portugal,
| | - Jorge Bouça
- Department of Psychiatry and Mental Health, Vila Nova de Gaia/Espinho Healthcare Center, Vila Nova de Gaia, Portugal,
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13
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Rodrigues-Silva N, Venâncio Â, Bouça J. Risperidone, a risk factor for valproate-induced encephalopathy? Gen Hosp Psychiatry 2013; 35:452.e5-6. [PMID: 23317937 DOI: 10.1016/j.genhosppsych.2012.11.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Revised: 11/15/2012] [Accepted: 11/17/2012] [Indexed: 11/18/2022]
Abstract
Valproate-induced encephalopathy (ViE) has been increasingly reported and several risk factors have been proposed. We report a case whereby a patient became encephalopathic while treated with valproate and upon initiation of risperidone. The underlying mechanism could be risperidone's interference with valproate's binding to albumin, raising free valproate levels, which would impair the urea cycle and reduce ammonia conversion, leading to a hyperammonemic encephalopathy. The present case suggests a causal link, although further studies will be necessary to establish this. Nevertheless, clinicians should be aware of this possible interaction and consider carefully before concomitant administration of valproate and risperidone, mainly in patients with other risk factors for ViE, so this complication can be avoid or promptly diagnosed and treated.
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Affiliation(s)
- Nuno Rodrigues-Silva
- Vila Nova de Gaia/Espinho Healthcare Center, Department of Psychiatry and Mental Health, 4434-502 Vila Nova de Gaia, Portugal.
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Rodrigues-Silva N, Coelho R, Liça N, Correia N, Amorim P. P-150 - Effects of low-frequency electroacupuncture on the BIS and anxiety in anxious volunteers: a prospective, randomized, blinded study. Eur Psychiatry 2012. [DOI: 10.1016/s0924-9338(12)74317-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Rodrigues-Silva N, Venancio A. P-1111 - The untrusted hero: updating safety issues and clozapine's use in the clinical setting. Eur Psychiatry 2012. [DOI: 10.1016/s0924-9338(12)75278-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Rodrigues-Silva N, Venâncio Â. P-82 - Please, believe me! opioids false-positive in urine drug screening: levomepromazine cross-reactivity. Eur Psychiatry 2012. [DOI: 10.1016/s0924-9338(12)74249-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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