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Coelho V, Peixoto C, Azevedo H, Machado F, Soares M, Espain A. Effects of a Portuguese social-emotional learning program on the competencies of elementary school students. Front Psychol 2023; 14:1195746. [PMID: 37265946 PMCID: PMC10230249 DOI: 10.3389/fpsyg.2023.1195746] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 04/26/2023] [Indexed: 06/03/2023] Open
Abstract
Introduction It is widely recognized that socio-emotional learning (SEL) interventions can contribute to supporting students' positive development of socio-emotional skills (SES) and positive relationships with peers and teachers. Thus, interest in promoting students' SES through universal evidence-based programs is spreading around the world, including in Portuguese schools. Methods This quasi-experimental study examines the efficacy of a SEL classroom-based program, infused into the curriculum, on students' communication, self-regulation, and classroom peer relationships. Participants included 208 third- to fourth-grade students from three Portuguese public elementary schools: 143 in the intervention group (54.5% boys; Mage = 8.72; SD = 0.61); 65 in the comparison group (52.3% boys; Mage = 8.66; SD = 0.59). Measures included: Study on Social and Emotional Skills, parent, child, and teacher versions; and Classroom Peer Context Questionnaire, completed by students. The study followed a pre- and post-test design, with a 16-week intervention. Results For the overall participants, results show a positive effect of the program on students' assertiveness (family report), peer conflict and peer cooperation. Effects were analyzed separately by school grade. A statistically significant positive effect of the program on third-grade students' assertiveness and sociability was found. For fourth-grade students, a positive effect was found on - emotional control). classroom conflicts, isolation, cooperation and cohesion behaviors. Discussion These positive effects support the expansion of universal interventions when aiming at strengthening SEL in Portuguese school settings, underlining the relevance of embedding SEL into the curricula and daily practices at schools.
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Affiliation(s)
- Vera Coelho
- University of Maia, Department of Social and Behavioral Sciences, Research Unit in Psychology and Human Development, Maia, Portugal
- Center for Psychology at the University of Porto, Porto, Portugal
| | - Carla Peixoto
- University of Maia, Department of Social and Behavioral Sciences, Research Unit in Psychology and Human Development, Maia, Portugal
- Center for Research and Innovation in Education (inED), School of Education, Porto Polytechnic, Porto, Portugal
| | - Helena Azevedo
- University of Maia, Department of Social and Behavioral Sciences, Research Unit in Psychology and Human Development, Maia, Portugal
| | - Francisco Machado
- University of Maia, Department of Social and Behavioral Sciences, Research Unit in Psychology and Human Development, Maia, Portugal
| | - Mónica Soares
- University of Maia, Department of Social and Behavioral Sciences, Research Unit in Psychology and Human Development, Maia, Portugal
- Higher School of Education of Paula Frassinetti, Porto, Portugal
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Peixoto C, Dourado C, Santos H, Roberto P. Perioperative anesthetic management of very long-chain acyl-coenzyme a dehydrogenase deficiency. Rev Esp Anestesiol Reanim (Engl Ed) 2023; 70:231-234. [PMID: 36842679 DOI: 10.1016/j.redare.2021.12.005] [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] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/13/2021] [Indexed: 02/26/2023]
Abstract
Very long-chain acyl-coenzyme A dehydrogenase deficiency is a rare disorder of β-oxidation fatty acid metabolism that results in susceptibility to hypoglycemia, liver failure, cardiomyopathy and rhabdomyolysis during catabolic situations. We report the case of a 10-year-old male undergoing a totally implanted central venous catheter placement during hospitalisation for rhabdomyolysis, who was successfully managed with general anesthesia with nitrous oxide, sevoflurane and remifentanil. No hypoglycemia occurred and creatine kinase levels did not increase in the perioperative period. We describe the challenges encountered and the strategies used to avoid further decompensation of the disease due to surgical stress.
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Affiliation(s)
- C Peixoto
- Medical Degree, Department of Anesthesiology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal.
| | - C Dourado
- Medical Degree, Department of Anesthesiology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal
| | - H Santos
- Medical Degree, Department of Pediatrics, Centro Hospitalar de Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal
| | - P Roberto
- Medical Degree, Department of Anesthesiology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Vila Nova de Gaia, Portugal
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Peixoto C, Rego D, Cruz M, Medeiros H. “Dad is feeling blue”: what to know about paternal perinatal depression. Eur Psychiatry 2022. [PMCID: PMC9566303 DOI: 10.1192/j.eurpsy.2022.1224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Introduction The transition into parenthood is associated with an increased psychopathological vulnerability. Most studies have focused on mothers, although recently, the role of fathers has grown more importance. Paternal perinatal depression (PPD) is an episode of major depressive disorder occurring in new or expectant fathers during the perinatal period. PPD is not widely acknowledged and research are rare. Objectives The authors intend to review the literature about PPD, focusing on its prevalence, risk factors, clinical features, treatment and consequences. Methods Non-systematic review of the literature through PubMed. Results A meta-analysis of PPD estimated a prevalence of 10.4%. Risk factors of PPD are multiple and complex. There are sociodemographic factors, such as marital status, monthly income and social support. Psychological factors, for instance history of depression, maternal prenatal anxiety and maternal depression. Some literature also suggests hormonal changes on men like increase estrogen and lower testosterone levels. PPD can present with symptoms of mood alterations, like irritability and restricted emotions, anxiety, fatigue, insomnia, loss of appetite. Also common are behavioural disturbances such as interpersonal conflicts, impulsivity, violence, avoidance behaviour, and substance abuse. There are no studies to specific treatments to PPD, so the treatment is the same for women, such as antidepressants and psychotherapy. If untreated, PPD can have an adverse influence on the health and wellbeing of the mother and child. Conclusions PPD is still underscreened, underdiagnosed and undertreated. It is fundamental identifying risk factors and the development of specific interventions. Further research on PPD is needed. Disclosure No significant relationships.
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Peixoto C, Rego D, Cruz M, Peixoto B, Bicho M, Coelho J, Medeiros H. Challenges of ageing in prisons and forensic psychiatric settings. Eur Psychiatry 2022. [PMCID: PMC9567742 DOI: 10.1192/j.eurpsy.2022.1554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction There is a current trend towards an increase in the number of elderly prisoners due to the increase in life expectancy and the change in the attitude of society and the judicial system. The cut-off for “older offender” is defined from the age of 50, due to the lifestyle previous to prision and premature ageing. Objectives The authors intend to understand the challenges of aging in prison and forensic services, highlighting the psychiatric comorbidities of inmates and how these services can adapt to the needs of this population. Methods Non-systematic review of the literature. Results Studies of elderly in prisons and elderly forensic psychiatric patients are limited. Prisoners have increased physical and psychiatric morbidity and early mortality as they are more exposed to risk factors and more likely to have at least one health problem compared to older adults in the community. Compared to older people in the community, older prisoners are at higher risk for most psychiatric disorders including depression, psychosis, bipolar disorder, cognitive impairment, personality disorder and anxiety. Suicide rates are also higher among elderly prisoners. The inadequacy of the prison system to respond to the unique needs of elderly prisoners has a detrimental impact on their overall experience of incarceration. The development of specific services for elderly prisoners or the adaptation of mixed units for the elderly population is proposed. Conclusions The elderly population in prisons is growing and has higher risk of psychiatric pathology compared to community elders. Prison services with difficulties in identifying and meeting these needs. Disclosure No significant relationships.
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Lavazais S, Pereira-Fernandes A, Delachaume C, Jagerschmidt C, Drennan M, Merciris D, Peixoto C, Borgonovi M, Desroy N, Amantini D, De Vos S, Nys K. POS0442 GLPG4399: SELECTIVE SIK3 INHIBITION AS A NOVEL MODE OF ACTION FOR THE TREATMENT OF INFLAMMATORY ARTHRITIC DISEASES (PRECLINICAL). Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.4526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundSalt-inducible kinases (SIKs) is a family of kinases with immunomodulatory function identified using a proprietary adenoviral shRNA knockdown target discovery platform. Moreover, SIK inhibition has previously been shown to have a role in inflammatory signalling.1–3 These findings suggest a therapeutic potential for SIK inhibition in inflammatory indications. A medicinal chemistry effort resulted in the development of a first-in-class, oral, selective SIK3 inhibitor: GLPG4399. This compound may be beneficial in inflammatory diseases such as rheumatoid and psoriatic arthritis which are chronic disorders characterized by impaired joint synovial inflammation.ObjectivesOur research aimed to characterize GLPG4399 and explore its impact in arthritis-relevant inflammatory in vitro phenotypic cell assays, and to evaluate the therapeutic potential of selective SIK3 inhibition in in vivo experimental models of arthritis.MethodsThe selectivity and potency of GLPG4399 was profiled using biochemical and target-based cell assays. The mode of action of selective SIK3 inhibition in inflammation was explored in an in vitro panel of innate (monocytes, macrophages, dendritic cells) and adaptive (B and T lymphocytes) immune phenotypic assays and in a lipopolysaccharide (LPS)-stimulated human whole blood assay by measuring the production of inflammatory cytokines. In vivo target engagement was evaluated in an acute LPS-stimulated cytokine release mouse model by measuring plasma tumour necrosis factor (TNF) α levels. The therapeutic efficacy of GLPG4399 was evaluated in vivo in collagen-induced arthritis (CIA) and IL-23-induced psoriatic arthritis mouse models by assessing disease activity endpoints.ResultsGLPG4399 was shown to be a SIK3 inhibitor with high selectivity against a panel of 370 kinases. The wide effect of SIK3 inhibition on key immune cell types was demonstrated by GLPG4399’s reduction of pro-inflammatory cytokines produced by monocytes, macrophages, dendritic cells, B and T lymphocytes in a panel of in vitro innate and adaptive immune phenotypic assays. The biological activity and target engagement of GLPG4399 was further demonstrated by dose-dependent inhibition of TNFα production in vitro in LPS-stimulated human whole blood and in vivo in the blood of LPS-challenged mice. Oral treatment with GLPG4399 in mice resulted in a significant and dose-dependent improvement of disease activity score in both CIA and the psoriatic arthritis disease model. Moreover, bone erosion in CIA and new bone formation in the psoriatic arthritis disease model were significantly reduced.ConclusionOur preclinical findings demonstrate the strong immunomodulatory effect of SIK3 inhibition in arthritis-relevant inflammatory cell assays and highlight the significant preclinical efficacy of GLPG4399 in two experimental arthritis mouse models. The novel mechanisms of action of GLPG4399 represents a promising approach for the treatment of arthritis.References[1]Sundberg TB et al. PNAS 2014;111:12468–73.[2]Lombardi MS et al. J Leukoc Biol 2016;99:711–21.[3]Wein MN et al. Trends Endocrinol Metab 2018;29:723–35.AcknowledgementsThese studies were funded by Galapagos NV (Mechelen, Belgium). Editorial and publications management support was provided by PharmaGenesis London, London, UK, and funded by Galapagos NV.Disclosure of InterestsStephanie Lavazais Employee of: Employee of Galapagos., Anna Pereira-Fernandes Employee of: Employee of Galapagos., Carole Delachaume Employee of: Employee of Galapagos., Catherine Jagerschmidt Employee of: Employee of Galapagos., Michael Drennan Employee of: Employee of Galapagos., Didier Merciris Employee of: Employee of Galapagos., Christophe Peixoto Employee of: Employee of Galapagos., Monica Borgonovi Employee of: Employee of Galapagos., Nicolas Desroy Employee of: Employee of Galapagos., David Amantini Employee of: Employee of Galapagos., Steve De Vos Employee of: Employee of Galapagos., Kris Nys Employee of: Employee of Galapagos.
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Ferreira EF, Portugal D, Silva N, Peixoto C, Matos C, Prates L. Physical and rehabilitation medicine intervention in stroke in the acute hospital setting: A cross-sectional study. Rehabilitacion (Madr) 2022; 56:302-311. [PMID: 35523618 DOI: 10.1016/j.rh.2021.10.001] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 09/02/2021] [Accepted: 10/18/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Stroke represents the main cause of death and disability in Portugal. Resulting functional deficits are widely recognized. This work aims to evaluate the variation in functionality of stroke patients in the acute hospital setting under a rehabilitation program. MATERIAL AND METHODS Cross-sectional study of patients admitted to the Neurology department, from January to June 2019, with acute stroke. The variation in functionality was assessed using the Barthel index. Statistical analysis used Student's t-test and Spearman's correlation coefficient, with a p-value≤0.05 as significant. RESULTS 106 patients with mean age of 63.7±14.2 years and a male predominance (60.4%) were included. Patients started rehabilitation program at 1.37±1.19 days after admission. A gain in functionality between admission and discharge was identified (50.18±32.37 versus 68.73±28.94, p<0.001). A significantly greater increase was observed in patients diagnosed under code stroke protocol (CSP) (p=0.021) and undergoing some type of acute phase treatment (p=0.017). From 90.5% of the patients that pursued rehabilitation after discharge, 40.6% were referred to an inpatient unit on average 12.7±7.0 days after admission. DISCUSSION In this study, Physical and Rehabilitation Medicine (PRM) provided early rehabilitation care to stroke patients. According to international evidence this is associated with greater functional gains. The variation in functionality verified during hospitalization demonstrates the importance of PRM in the acute hospital, assessing the rehabilitation needs after hospital discharge and maximizing outpatient rehabilitation. Diagnosis under CSP and undergoing acute treatment were determinants of greater functional improvement. CONCLUSION PRM plays a central role in the early management of functional impairment resulting from stroke and in the post-discharge guidance of patients.
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Affiliation(s)
- E Freitas Ferreira
- Physical and Rehabilitation Medicine Department, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal.
| | - D Portugal
- Physical and Rehabilitation Medicine Department, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal
| | - N Silva
- Physical and Rehabilitation Medicine Department, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal
| | - C Peixoto
- Physical and Rehabilitation Medicine Department, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal
| | - C Matos
- Physical and Rehabilitation Medicine Department, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal
| | - L Prates
- Physical and Rehabilitation Medicine Department, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal
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Peixoto C, Castro M, Carriles I, Arriba MD, Lapresa V, Alcazar JL. Diagnosing Septate Uterus Using Three-Dimensional Ultrasound Using Three Different Classifications: An Interobserver and Intraobserver Agreement Study. Rev Bras Ginecol Obstet 2021; 43:911-918. [PMID: 34933384 PMCID: PMC10183891 DOI: 10.1055/s-0041-1740271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVE Currently, there are up to three different classifications for diagnosing septate uterus. The interobserver agreement among them has been poorly assessed. OBJECTIVE To assess the interobserver agreement of nonexpert sonographers for classifying septate uterus using the European Society of Human Reproduction and Embryology/European Society for Gynaecological Endoscopy (ESHRE/ESGE), American Society for Reproductive Medicine (ASRM), and Congenital Uterine Malformations by Experts (CUME) classifications. METHODS A total of 50 three-dimensional (3D) volumes of a nonconsecutive series of women with suspected uterine malformation were used. Two nonexpert examiners evaluated a single 3D volume of the uterus of each woman, blinded to each other. The following measurements were performed: indentation depth, indentation angle, uterine fundal wall thickness, external fundal indentation, and indentation-to-wall-thickness (I:WT) ratio. Each observer had to assign a diagnosis in each case, according to the three classification systems (ESHRE/ESGE, ASRM, and CUME). The interobserver agreement regarding the ESHRE/ESGE, ASRM, and CUME classifications was assessed using the Cohen weighted kappa index (k). Agreement regarding the three classifications (ASRM versus ESHRE/ESGE, ASRM versus CUME, ESHRE/ESGE versus CUME) was also assessed. RESULTS The interobserver agreement between the 2 nonexpert examiners was good for the ESHRE/ESGE (k = 0.74; 95% confidence interval [CI]: 0.55-0.92) and very good for the ASRM and CUME classification systems (k = 0.95; 95%CI: 0.86-1.00; and k = 0.91; 95%CI: 0.79-1.00, respectively). Agreement between the ESHRE/ESGE and ASRM classifications was moderate for both examiners. Agreement between the ESHRE/ESGE and CUME classifications was moderate for examiner 1 and good for examiner 2. Agreement between the ASRM and CUME classifications was good for both examiners. CONCLUSION The three classifications have good (ESHRE/ESGE) or very good (ASRM and CUME) interobserver agreement. Agreement between the ASRM and CUME classifications was higher than that for the ESHRE/ESGE and ASRM and ESHRE/ESGE and CUME classifications.
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Affiliation(s)
- Carla Peixoto
- Department of Obstetrics and Gynecology, Centro Hospitalar São João, Porto, Portugal.,Faculty of Medicine, University of Porto, Porto, Portugal
| | - Maite Castro
- Centro de Infertilidad y Reproduccion Humana, Barcelona, Spain
| | - Isabel Carriles
- Department of Obstetrics and Gynecology, Clínica Universidad de Navarra, University of Navarra, Pamplona, Spain
| | - Maria de Arriba
- Department of Obstetrics and Gynecology, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - Victoria Lapresa
- Department of Obstetrics and Gynecology, University Hospital, Salamanca, Spain
| | - Juan Luis Alcazar
- Department of Obstetrics and Gynecology, Clínica Universidad de Navarra, University of Navarra, Pamplona, Spain
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Moreira A, Faria T, Oliveira J, Kavara A, Schofield M, Sanderson T, Collins M, Gantier R, Alves P, Carrondo M, Peixoto C. Enhancing the purification of Lentiviral vectors for clinical applications. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118598] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Deveza MM, Peixoto C, Camara C, Beleza A. HIPOFOSFATEMIA GRAVEMENTE SINTOMÁTICA APÓS ADMINISTRAÇÃO DE CARBOXIMALTOSE FÉRRICA - CASO CLÍNICO. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.011] [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] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Pereira S, Salgueiro A, Rosa P, Peixoto C, Ferreira M, Silva D. Symptomatic Hypokalemia in a 19-Year-Old Student. Acta Medica (Hradec Kralove) 2021; 63:137-140. [PMID: 33002402 DOI: 10.14712/18059694.2020.32] [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] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Primary hyperaldosteronism (PA) is the most common cause of secondary arterial hypertension and is frequently undiagnosed. It affects all ages but is more frequent between 20 and 60 years old. The clinical presentation is variable, and the diagnosis is based on screening and, in equivocal cases, confirmatory tests. A 19-year-old student presented with complaints of extreme fatigue, arterial hypertension, hypokalemia and metabolic alkalosis, raising a high index of suspicion for PA. Screening tests were performed and its expressiveness excluded the need of confirmatory tests. CT-scan showed a unilateral adrenal adenoma and the patient was submitted to laparoscopic adenectomy without complications. Prompt diagnosis and treatment are essential to avoid long term complications of PA.
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Affiliation(s)
- Sara Pereira
- Intermediate Care Unit - Centro Hospitalar do Médio Ave, Vila Nova de Famalicão, Portugal.
| | - André Salgueiro
- Bombarral Family Health Unit, Rua Doutor Arlindo de Carvalho, nº 27, 2540-073 Bombarral, Portugal
| | - Paula Rosa
- Intermediate Care Unit - Centro Hospitalar do Médio Ave, Vila Nova de Famalicão, Portugal
| | - Carla Peixoto
- Intermediate Care Unit - Centro Hospitalar do Médio Ave, Vila Nova de Famalicão, Portugal
| | - Marta Ferreira
- Intermediate Care Unit - Centro Hospitalar do Médio Ave, Vila Nova de Famalicão, Portugal
| | - David Silva
- Intermediate Care Unit - Centro Hospitalar do Médio Ave, Vila Nova de Famalicão, Portugal
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Peixoto C, Rego D, Bicho M, Coelho JM, Medeiros H. Delusional infestation: Two case reports. Eur Psychiatry 2021. [PMCID: PMC9479965 DOI: 10.1192/j.eurpsy.2021.2034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Delusional infestation (DI), also known as delusional parasitosis or Ekbom syndrome, is a rare disorder, characterised by fixed belief that the skin, body or immediate environment is infested by small pathogens, despite the lack of any medical evidence for it. Objectives To describe and discuss two clinical cases of DI, in order to show two different ways of presenting in this entity. Methods Two case report and non-systematic review. Results We present the case of a 76-year-old woman, without psychiatric history, with an DI with 5 years of evolution, referred to a psychiatric consultation by a dermatologist. The second case, is a 41-year-old woman with a history of multiple substance use disorder, with an DI with a month of evolution, who resorted to the emergency department. DI is not a single diagnostic entity. The classic form, as represented in the first case,is a primary form, which develops without any known cause or underlying disease, corresponding to a persistent delusional disorder. However, about 60% of patients have secondary forms of DI, in the context of substance misuse, some medications or in the course of physical or psychiatric diseases (e.g. stroke, delirium, dementia, depression, schizophrenia). Conclusions DI can occur as a primary delusional disorder or secondary to several other medical conditions. An in-depth clinical history is essential in order to make the correct diagnosis. A multidisciplinary approach is also important, to exclude any possible organic etiology, not forgetting that many patients may turn to other medical specialities first. Disclosure No significant relationships.
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Coelho JM, Peixoto C, Bicho M, Fontes H. Substance use disorders in adolescence - a review. Eur Psychiatry 2021. [PMCID: PMC9479894 DOI: 10.1192/j.eurpsy.2021.2183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Substance use disorders in adolescents are a growing problem worldwide. These disorders are often unrecognised, unvalued by families, society and clinicians and as a result underdiagnosed, with serious future consequences if improperly addressed. Objectives Updated review of the recent literature on this topic. Methods Unsystematic review of the most recent and relevant literature. Results Review of neurobiology, risk factors, co-morbidity, differential diagnosis, diagnostic criteria, evaluation and treatment of substance use disorders in adolescence. Conclusions Substance use disorder in adolescence includes a variety of behaviours related to the use of alcohol and/or drugs, for instance, inability to control substance use, impairment of function at school, home or work, interpersonal problems and hazardous use of substance. Further knowledge in identifying, early diagnosing and adequate intervention in adolescents’ substance use disorder may have paramount prognostic features. Disclosure No significant relationships.
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Peixoto C, Santos FQ, Rego D, Medeiros H. Psychedelics and psychiatric disorders: A emerging role. Eur Psychiatry 2021. [PMCID: PMC9470409 DOI: 10.1192/j.eurpsy.2021.2054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Introduction Recently there has been renewal in interest of psychedelic research. Classic psychedelics such as lysergic acid diethylamide (LSD), psilocybin and mescaline act pharmacologically as agonists at the 5-HT2A receptor. The entactogens like methylenedioxymethamphetamine (MDMA), acts as a serotonin, dopamine and noradrenaline agonist. All of these drugs are potential candidates in the treatment of multiple psychiatric illnesses. Objectives The authors intend to review the literature on the clinical application of psychedelic drugs in psychiatric disorders. Methods Non-systematic review of the literature. Results In recent clinical trial the psychedelic is given with psychotherapeutic input. In a supportive setting, psychedelics produced immediate and significant anti-depressant and anxiolytic effects that were endured for several months. Randomized clinical trials support the efficace of psilocybin in the treatment of depression and those with anxiety and depression symptoms provoked by life-threatening cancer. There have also been studies showing efficacy in both alcohol and tobacco dependence. When administered safely LSD can reduce anxiety and have anti-addictive property. Randomized clinical trials support the efficacy of MDMA in the treatment of PTSD. Psychedelics were well-tolerated, few adverse effects have been reported. The most common adverse effects were transient anxiety, short-lived headaches, nausea and mild increases in heart rate and blood pressure, with no persisting adverse effects. Serious adverse events, such as persistent psychosis and suicidality, have not been demonstrated. Conclusions Psychedelics appear to be effective in multiple psychiatric disorders and are well-tolerated, although further evidence is required, to better see they therapeutic potential. Disclosure No significant relationships.
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Peixoto C, Rego D, Bicho M, Coelho J, Medeiros H. Psychiatric symptoms in huntington’s disease. Eur Psychiatry 2021. [PMCID: PMC9528255 DOI: 10.1192/j.eurpsy.2021.682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
Huntington’s disease (HD) is an autosomal dominant neurodegenerative disorder, that typically manifests in adulthood, clinically characterized by progressive motor, cognitive and psychiatric/behavioural symptoms. Psychiatric symptoms are common in HD. The presentation of these symptoms is highly variable, and their course does not correlate with motor or cognitive disease progression. Psychiatric symptoms often precede motor onset by many years.ObjectivesThe authors intend to review the literature the most frequent psychiatric disorders in patients with HD.MethodsNon-systematic review of the literature.ResultsPsychiatric symptoms have been a core feature of HD. Pre-symptomatic HD patients exhibit a greater prevalence of psychiatric symptoms, particularly affective disorders. This symptoms are presenting symptoms of HD in up to half of all people. In symptomatic HD patients, it is estimated that up to 73–98% of patients will have a major psychiatric disorder or psychiatric symptoms. Psychiatric manifestations in HD include depression, irritability, apathy, anxiety, mania, perseverations, obsessions and psychosis. Cognitive changes include progressive deficits in attention, learning, executive and sensory functions, resulting in dementia. Depression, diagnosed in half of patients with HD, is the most common and earliest symptoms prior to the motor onset. There are likely multiple causes of the psychiatric symptoms, with underlying factors including a combination of neurobiological, cognitive, psychological, social and environmental factors.ConclusionsPatients with HD have high psychiatric comorbidity, that causes significant functional impairment and affect quality of life. Thus, they require a multidisciplinary approach in the recognition and treatment of psychiatric symptoms.
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Pereira A, Peixoto C, Martins H, Marques C, Carvalho F, Macedo A. Eating disorder examination-questionnaire – 7: Construct validity in a sample of portuguese overweight women. Eur Psychiatry 2021. [PMCID: PMC9471241 DOI: 10.1192/j.eurpsy.2021.964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Although the Eating Disorder Examination Questionnaire (EDEQ; Fairburn et al. 2008) is the most used instrument worldwide for the assessment of eating disorders symptoms, its factorial structure considerably varies, which limits its construct validity. Using exploratory factor analisys in data from a sample of overweight women, our group found a three-factors structure of the EDEQ Portuguese version (Peixoto et al. 2013), Although it was in accordance with other psychometric studies (eg. Peterson et al 2007), it was different from the original matrix. Further investigation regarding its factor structure has been conducted, with studies supporting a modified seven-item-three-factors structure (dietary restraint, shape/weight overvaluation, body dissatisfaction) with improved psychometric properties (Grilo et al. 2013, 2015), including with Portuguese samples (Machado et al. 2018; Santos et al. 2019). Objectives To analyze if the EDEQ version composed of seven items and three factors is replicated in a Portuguese sample of overweight women. Methods The EDEQ was administered to an outpatient sample of 276 women (Mean age= 43.85±11.89 years; Mean BMI=32.82±5.43 Kg/height2) attending a weight loss treatment consultation in a public hospital. Results Confirmatory factor analysis (CFA) revealed an adequate fit of the EDEQ-7 second order model with three dimensions (χ2/df=1.5497; RMSEA=.0452, CFI=.9955, TLI=.9914, GFI=.xxx; p<.001). The EDEQ7 Cronbach’s alphas for the total and its dimensions were α<.70. Conclusions Given its good psychometric properties, the overlap of the measurement model with those found with different samples and the reduced number of items, the EDEQ7 will be very useful both in research and clinical settings with/for overweight women.
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Bicho M, Coelho J, Peixoto C, Fontes H. Pisa syndrome – a case report. Eur Psychiatry 2021. [PMCID: PMC9480287 DOI: 10.1192/j.eurpsy.2021.2116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Pisa Syndrome or pleurothotonus is a form of dystonia and often can arise as a side effect of antipsychotic treatment conditioning high morbidity and limiting management options. Despite the fact that the precise mechanism remains unclear, a neurochemical imbalance in dopaminergic and cholinergic transmission but also in serotoninergic and noradrenergic transmission can be a possible pathophysiologic mechanism, which can lead to changes in the axial axis with abnormal posture and marked lateral trunk flexion and abnormal gait. Objectives Regarding a clinical case, the authors intend to review the relevant and current literature on the relationship between psychotropic drugs and Pisa Syndrome. Methods Description of a clinical case by consulting databases of current and scientifically relevant articles. Results The clinical case reports a 48-year-old woman with a history of HIV and Substance Use Disorder, hospitalized for unspecific behavioral changes, characterized by mood changes, self-referential, persecutory and somatic delusional ideas, and delusions of the control of thought. She was medicated with antipsychotics and mood stabilizers, with subsequent development of an acute-onset dystonic condition, characterizing the Pisa Syndrome. In this context, the dose of antipsychotics was lowered and anticholinergics were introduced, with progressive improvement of the clinical picture. Conclusions Pisa Syndrome, previously seen as a rare adverse effect, can occur as a dystonic reaction related to the use of psychotropic drugs, so its use should be judicious. Further studies are needed to understand the extent of this association and its pathophysiological mechanisms in order to guide more rigorous therapeutic lines. Disclosure No significant relationships.
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Affiliation(s)
- D. Marcondes
- Instituto de Matemática e Estatística, Universidade de São Paulo, São Paulo, Brazil
| | - C. Peixoto
- Instituto de Matemática e Estatística, Universidade de São Paulo, São Paulo, Brazil
| | - A. C. Maia
- Faculdade de Economia, Administração e Contabilidade, Universidade de São Paulo, São Paulo, Brazil
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Abstract
Resumo O presente estudo analisa a relação entre a implementação de práticas de transição do contexto familiar para a creche e o bem-estar emocional dos bebês durante o primeiro de mês de frequência neste contexto extrafamiliar. Foram recolhidos dados, antes e após a entrada do bebê na creche, junto das mães e das educadoras de 90 bebês.Os resultados indicaram que o número de práticas de transição reportadas pelas educadoras se revela positivamente associado ao bem-estar emocional dos bebês durante o primeiro mês de frequência da creche. Estes resultados recomendam a implementação de um conjunto diversificado de práticas de transição, antes e após a entrada na creche, no sentido de facilitar a adaptação dos bebês ao novo contexto desenvolvimental.
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Fonseca A, Silva R, Rato I, Neves AR, Peixoto C, Ferraz Z, Ramalho I, Carocha A, Félix N, Valdoleiros S, Galvão A, Gonçalves D, Curado J, Palma MJ, Antunes IL, Clode N, Graça LM. Breech Presentation: Vaginal Versus Cesarean Delivery, Which Intervention Leads to the Best Outcomes? ACTA MEDICA PORT 2017; 30:479-484. [PMID: 28898615 DOI: 10.20344/amp.7920] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 06/07/2016] [Accepted: 04/10/2017] [Indexed: 11/20/2022]
Abstract
INTRODUCTION The best route of delivery for the term breech fetus is still controversial. We aim to compare maternal and neonatal outcomes between vaginal and cesarean term breech deliveries. MATERIAL AND METHODS Multicentric retrospective cohort study of singleton term breech fetuses delivered vaginally or by elective cesarean section from January 2012 - October 2014. Primary outcomes were maternal and neonatal morbidity or mortality. RESULTS Sixty five breech fetuses delivered vaginally were compared to 1262 delivered by elective cesarean. Nulliparous women were more common in the elective cesarean group (69.3% vs 24.6%; p < 0.0001). Gestational age at birth was significantly lower in the vaginal delivery group (38 ± 1 weeks vs 39 ± 0.8 weeks; p = 0.0029) as was birth weight (2928 ± 48.4 g vs 3168 ± 11.3 g; p < 0.0001). Apgar scores below seven on the first and fifth minutes were more likely in the vaginal delivery group (1st minute: 18.5% vs 5.9%; p = 0.0006; OR 3.6 [1.9 - 7.0]; 5th minute: 3.1% vs 0.2%; p = 0.0133; OR 20.0 [2.8 - 144.4]), as was fetal trauma (3.1% vs 0.3%: p = 0.031; OR 9.9 [1.8-55.6]). Neither group had cases of fetal acidemia. Admission to the Neonatal Intensive Care Unit, maternal postpartum hemorrhage and the incidence of other obstetric complications were similar between groups. DISCUSSION Although vaginal breech delivery was associated with lower Apgar scores and higher incidence of fetal trauma, overall rates of such events were low. Admission to the neonatal intensive care unit and maternal outcomes were similar. CONCLUSION Both delivery routes seem equally valid, neither posing high maternal or neonatal complications' incidence.
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Affiliation(s)
- Andreia Fonseca
- Departamento de Obstetrícia e Ginecologia. Hospital de Santa Maria. Centro Hospital Lisboa Norte. Lisboa. Portugal
| | - Rita Silva
- Departamento de Obstetrícia e Ginecologia. Hospital de Santa Maria. Centro Hospital Lisboa Norte. Lisboa. Portugal
| | - Inês Rato
- Departamento de Obstetrícia e Ginecologia. Hospital de Santa Maria. Centro Hospital Lisboa Norte. Lisboa. Portugal
| | - Ana Raquel Neves
- Maternidade Bissaya Barreto. Centro Hospitalar Universitário de Coimbra. Coimbra. Portugal
| | - Carla Peixoto
- Departamento de Obstetrícia e Ginecologia. Centro Hospitalar de S. João. Porto. Portugal
| | - Zita Ferraz
- Maternidade Daniel de Matos. Centro Hospitalar Universitário de Coimbra. Coimbra. Portugal
| | - Inês Ramalho
- Maternidade Daniel de Matos. Centro Hospitalar Universitário de Coimbra. Coimbra. Portugal
| | - Ana Carocha
- Maternidade Alfredo da Costa. Centro Hospitalar Lisboa Central. Lisboa. Portugal
| | - Nisa Félix
- Maternidade Alfredo da Costa. Centro Hospitalar Lisboa Central. Lisboa. Portugal
| | - Sandra Valdoleiros
- Maternidade Alfredo da Costa. Centro Hospitalar Lisboa Central. Lisboa. Portugal
| | - Ana Galvão
- Maternidade Júlio Dinis. Centro Materno-Infantil do Norte. Centro Hospitalar do Porto. Porto. Portugal
| | - Daniela Gonçalves
- Maternidade Júlio Dinis. Centro Materno-Infantil do Norte. Centro Hospitalar do Porto. Porto. Portugal
| | - Joana Curado
- Departamento de Obstetrícia e Ginecologia. Hospital Garcia de Orta. Almada. Portugal
| | - Maria João Palma
- Departamento de Obstetrícia e Ginecologia. Hospital Garcia de Orta. Almada. Portugal
| | - Isabel Lobo Antunes
- Departamento de Obstetrícia e Ginecologia. Hospital Garcia de Orta. Almada. Portugal
| | - Nuno Clode
- Departamento de Obstetrícia e Ginecologia. Hospital de Santa Maria. Centro Hospital Lisboa Norte. Lisboa. Portugal
| | - Luís Mendes Graça
- Departamento de Obstetrícia e Ginecologia. Hospital de Santa Maria. Centro Hospital Lisboa Norte. Lisboa. Portugal
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Peixoto C, Carrilho CG, Barros JA, Ribeiro TTSB, Silva LM, Nardi AE, Cardoso A, Veras AB. The effects of dehydroepiandrosterone on sexual function: a systematic review. Climacteric 2017; 20:129-137. [PMID: 28118059 DOI: 10.1080/13697137.2017.1279141] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Faced with the growing interest about the action of dehydroepiandrosterone (DHEA) and its benefits, as well as the negative impacts that sexual dysfunctions have on people's quality of life, this systematic review was undertaken with the objective of evaluating the effect of DHEA use on aspects of sexual function. METHOD An electronic search was conducted in the databases of PubMed, ISI Web of Science and Virtual Health Library (VHL) combining the terms 'DHEA treatment' and 'DHEA use' with terms such as 'sexual dysfunction', 'sexual frequency' and 'libido'. No limits on time and language were imposed. Clinical studies were considered eligible where individuals for any reason made use of DHEA and if they had any aspect of sexual function assessed. Preclinical studies and systematic reviews were considered ineligible. RESULTS The search identified 183 references and 38 were considered eligible. DHEA improved aspects such as sexual interest, lubrication, pain, arousal, orgasm and sexual frequency. Its effect was better in populations with sexual dysfunction, especially in perimenopausal and postmenopausal women. CONCLUSION Considering the studies currently published, DHEA is effective in improving several aspects of sexual function, but this effect did not reach all the populations studied.
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Affiliation(s)
- C Peixoto
- a Federal University of Rio de Janeiro, Institute of Psychiatry, Laboratory of Panic and Respiration , Rio de Janeiro , RJ , Brazil.,b Federal University of Rio de Janeiro, Institute of Psychiatry, Laboratory of Thanatology and Psychiatry in other Medical Conditions , Rio de Janeiro , RJ , Brazil.,c Translational Research Group in Mental Health , Dom Bosco Catholic University , Campo Grande , MS , Brazil
| | - C G Carrilho
- c Translational Research Group in Mental Health , Dom Bosco Catholic University , Campo Grande , MS , Brazil
| | - J A Barros
- c Translational Research Group in Mental Health , Dom Bosco Catholic University , Campo Grande , MS , Brazil
| | - T T S B Ribeiro
- c Translational Research Group in Mental Health , Dom Bosco Catholic University , Campo Grande , MS , Brazil
| | - L M Silva
- c Translational Research Group in Mental Health , Dom Bosco Catholic University , Campo Grande , MS , Brazil
| | - A E Nardi
- a Federal University of Rio de Janeiro, Institute of Psychiatry, Laboratory of Panic and Respiration , Rio de Janeiro , RJ , Brazil
| | - A Cardoso
- a Federal University of Rio de Janeiro, Institute of Psychiatry, Laboratory of Panic and Respiration , Rio de Janeiro , RJ , Brazil.,b Federal University of Rio de Janeiro, Institute of Psychiatry, Laboratory of Thanatology and Psychiatry in other Medical Conditions , Rio de Janeiro , RJ , Brazil.,c Translational Research Group in Mental Health , Dom Bosco Catholic University , Campo Grande , MS , Brazil
| | - A B Veras
- a Federal University of Rio de Janeiro, Institute of Psychiatry, Laboratory of Panic and Respiration , Rio de Janeiro , RJ , Brazil.,b Federal University of Rio de Janeiro, Institute of Psychiatry, Laboratory of Thanatology and Psychiatry in other Medical Conditions , Rio de Janeiro , RJ , Brazil.,c Translational Research Group in Mental Health , Dom Bosco Catholic University , Campo Grande , MS , Brazil
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Pinto C, Ribeiro A, Silva G, Oliveira M, Coroadinha A, Peixoto C, Barbas A, Brito C, Paredes J, Alves P. AAV-shRNA vectors as an alternative therapy for human basal-like breast cancer. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61511-3] [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] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Vlaming MLH, van Duijn E, Dillingh MR, Brands R, Windhorst AD, Hendrikse NH, Bosgra S, Burggraaf J, de Koning MC, Fidder A, Mocking JAJ, Sandman H, de Ligt RAF, Fabriek BO, Pasman WJ, Seinen W, Alves T, Carrondo M, Peixoto C, Peeters PAM, Vaes WHJ. Microdosing of a Carbon-14 Labeled Protein in Healthy Volunteers Accurately Predicts Its Pharmacokinetics at Therapeutic Dosages. Clin Pharmacol Ther 2015; 98:196-204. [PMID: 25869840 DOI: 10.1002/cpt.131] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 03/30/2015] [Accepted: 04/06/2015] [Indexed: 11/12/2022]
Abstract
Preclinical development of new biological entities (NBEs), such as human protein therapeutics, requires considerable expenditure of time and costs. Poor prediction of pharmacokinetics in humans further reduces net efficiency. In this study, we show for the first time that pharmacokinetic data of NBEs in humans can be successfully obtained early in the drug development process by the use of microdosing in a small group of healthy subjects combined with ultrasensitive accelerator mass spectrometry (AMS). After only minimal preclinical testing, we performed a first-in-human phase 0/phase 1 trial with a human recombinant therapeutic protein (RESCuing Alkaline Phosphatase, human recombinant placental alkaline phosphatase [hRESCAP]) to assess its safety and kinetics. Pharmacokinetic analysis showed dose linearity from microdose (53 μg) [(14) C]-hRESCAP to therapeutic doses (up to 5.3 mg) of the protein in healthy volunteers. This study demonstrates the value of a microdosing approach in a very small cohort for accelerating the clinical development of NBEs.
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Affiliation(s)
| | | | - M R Dillingh
- Centre for Human Drug Research, Leiden, The Netherlands, UK
| | - R Brands
- AMRIF BV, Wageningen, The Netherlands, UK
| | - A D Windhorst
- Department of Radiology and Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands, UK
| | - N H Hendrikse
- Department of Pharmacy and Clinical Pharmacology, VU University Medical Center, Amsterdam, The Netherlands, UK
| | | | - J Burggraaf
- Centre for Human Drug Research, Leiden, The Netherlands, UK
| | | | | | | | | | | | | | | | - W Seinen
- AMRIF BV, Wageningen, The Netherlands, UK.,Utrecht University, Utrecht, The Netherlands, UK
| | - T Alves
- GenIBET/IBET, Oeiras, Portugal
| | | | | | - P A M Peeters
- Centre for Human Drug Research, Leiden, The Netherlands, UK
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Cadima J, Peixoto C, Leal T. Observed classroom quality in first grade: associations with teacher, classroom, and school characteristics. Eur J Psychol Educ 2013. [DOI: 10.1007/s10212-013-0191-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Peixoto C, Pereira A, Soares M, Bos S, Marques M, Nogueira V, Valente J, Madeira N, Roque C, Macedo A. 1740 – Psychometric properties of the night eating questionnare in a portuguese sample of overweight women. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76720-8] [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: 10/26/2022] Open
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Peixoto C, Pereira A, Soares M, Bos S, Marques M, Maia B, Nogueira V, Valente J, Madeira N, Roque C, Macedo A. 1757 – Perfectionism, eating behaviours and affect in overweight women. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76735-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Peixoto C, Pereira A, Soares M, Bos S, Marques M, Nogueira V, Valente J, Madeira N, Roque C, Macedo A. 1749 – Psychometric properties of the eating disorder examination questionnaire in a portuguese sample of overweight women. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76728-2] [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: 10/26/2022] Open
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Lesch HP, Laitinen A, Peixoto C, Vicente T, Makkonen KE, Laitinen L, Pikkarainen JT, Samaranayake H, Alves PM, Carrondo MJT, Ylä-Herttuala S, Airenne KJ. Production and purification of lentiviral vectors generated in 293T suspension cells with baculoviral vectors. Gene Ther 2011; 18:531-8. [DOI: 10.1038/gt.2010.162] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Coutinho-Filho T, De-Deus G, Klein L, Manera G, Peixoto C, Gurgel-Filho ED. Radiopacity and histological assessment of Portland cement plus bismuth oxide. ACTA ACUST UNITED AC 2008; 106:e69-77. [PMID: 18926734 DOI: 10.1016/j.tripleo.2008.07.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2007] [Revised: 07/11/2008] [Accepted: 07/26/2008] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The present study evaluated the subcutaneous connective tissue reactions and the radiopacity of MTA, Portland cement (PC), and Portland cement plus bismuth oxide (BO). STUDY DESIGN Forty rats were divided into 5 groups (n = 8 per group): A1: Control (empty capsule); A2: Pro-Root MTA; A3: PC; A4: PC + BO 1:1; and A5: PC + BO 2:1. Polyethylene tubes were filled with the test materials and standardized radiographic images were taken. Histological evaluation was done after 7 and 60 days. Student t test and Fisher's test were used in the statistical analysis (P < .05). RESULTS The radiopacity of the materials were in decreasing order: A2 > A4 > A5 > A3. No differences were found for the tissue response in the 2 experimental periods. A positive correlation between BO concentration and radiopacity of PC was determined. CONCLUSION The histological evaluation suggests that all studied materials were biocompatible at 7 and 60 days.
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Affiliation(s)
- Tauby Coutinho-Filho
- Department of Endodontics, Rio de Janeiro State University, Rio de Janeiro, Brazil
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de Lima AR, Nyengaard JR, Jorge AAL, Balieiro JCC, Peixoto C, Fioretto ET, Ambrósio CE, Miglino MA, Zatz M, Ribeiro AACM. Muscular dystrophy-related quantitative and chemical changes in adenohypophysis GH-cells in golden retrievers. Growth Horm IGF Res 2007; 17:480-491. [PMID: 17664078 DOI: 10.1016/j.ghir.2007.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [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: 02/22/2007] [Revised: 05/11/2007] [Accepted: 06/15/2007] [Indexed: 11/15/2022]
Abstract
Duchenne muscular dystrophy (DMD) is a recessive X-linked lethal condition which affects a boy in every 3300 births. It is caused by the absence of dystrophin, a protein occurring especially within the musculoskeletal system and in neurons in specific regions of the central nervous system (CNS). Growth hormone (GH) inhibition is believed to decrease the severity of DMD and could perhaps be used in its treatment. However, the underlying pathological mechanism is not known. The golden retriever muscular dystrophy dog (GRMD) represents an animal model in the study of DMD. In this paper we investigated the morphological aspects of the adenohypophysis as well as the total number and size of GH-granulated cells using design-based stereological methods in a limited number of dystrophic and healthy golden retrievers. GH-cells were larger (32.4%) in dystrophic dogs than in healthy animals (p=0.01) and they occupied a larger portion (62.5%) of the adenohypophysis volume (p=0.01) without changes in either adenohypophysis volume (p=0.893) or total number of GH-granulated cells (p=0.869). With regard to ultrastructure, granulated cells possessed double-layer electron-dense granules which were evenly distributed in the cytosol. Furthermore, these granules in dystrophic animals occupied a larger proportion of GH-granulated cell volume (66.9%; p=0.008) as well as of all GH-cells in the whole pars distalis of adenohypophysis (77.3%; p=0.035), albeit IGF-1 serum concentration was lower in severe cases. This suggests difficulties in the GH secretion that might possibly be associated to dystrophin absence. In contrast to earlier reports, our data suggest that a lower IGF-1 concentration may be more related to a severe, as opposed to a benign, clinical form of muscular dystrophy.
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Affiliation(s)
- A R de Lima
- Laboratory of Stereology and Chemical Anatomy, Department of Surgery, College of Veterinary Medicine, University of São Paulo, Brazil
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Peixoto C, Marcelino I, Amaral A, Carrondo M, Alves P. Purification by membrane technology of an intracellular Ehrlichia ruminantium candidate vaccine against heartwater. Process Biochem 2007. [DOI: 10.1016/j.procbio.2007.04.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Peixoto C, Sousa MFQ, Silva AC, Carrondo MJT, Alves PM. Downstream processing of triple layered rotavirus like particles. J Biotechnol 2007; 127:452-61. [PMID: 16959354 DOI: 10.1016/j.jbiotec.2006.08.002] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2006] [Revised: 07/25/2006] [Accepted: 08/01/2006] [Indexed: 11/27/2022]
Abstract
Rotavirus like particles (RLPs) constitute a potential vaccine for the prevention of rotavirus disease, responsible for the death of more than half a million children each year. Increasing demands for pre-clinical trials material require the development of reproducible, scaleable and cost-effective purification strategies as alternatives to the traditional laboratory scale CsCl density gradient ultracentrifugation methods commonly used for the purification of these complex particles. Self-assembled virus like particles (VLPs) composed by VP2, VP6 and VP7 rotavirus proteins (VLPs 2/6/7) were produced in 5l scale using the insect cells/baculovirus expression system. A purification process using depth filtration, ultrafiltration and size exclusion chromatography as stepwise unit operations was developed. Removal of non-assembled rotavirus proteins, concurrently formed particles (RLP 2/6), particle aggregates and products of particle degradation due to shear was achieved. Particle stability during storage was studied and assessed using size exclusion chromatography as an analytical tool. Formulations containing either glycerol (10% v/v) or trehalose (0.5 M) were able to maintain 75% of intact triple layered VLPs, at 4 degrees C, up to 4 months. The overall recovery yield was 37% with removal of 95% of host cell proteins and 99% of the host cell DNA, constituting a promising strategy for the downstream processing of other VLPs.
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Affiliation(s)
- C Peixoto
- IBET/ITQB, Apartado 12, P-2780-901 Oeiras, Portugal
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Peixoto C, Ferreira TB, Carrondo MJT, Cruz PE, Alves PM. Purification of adenoviral vectors using expanded bed chromatography. J Virol Methods 2005; 132:121-6. [PMID: 16266756 DOI: 10.1016/j.jviromet.2005.10.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2005] [Revised: 09/08/2005] [Accepted: 10/03/2005] [Indexed: 11/29/2022]
Abstract
The increasing numbers of pre-clinical and clinical trials where recombinant adenoviral vectors are used for gene therapy and vaccination require the development of cost-effective and reproducible large scale purification strategies of the biologically active particles. Alternatives to the traditional laboratory scale CsCl density gradient ultracentrifugation method, such as fixed bed chromatography strategies, have been developed, but the yields of final recovery remain too low due mainly to the capture and concentration steps taking place before and between the chromatographic stages. In this study, a rapid and efficient scale-able purification protocol allowing to obtain concentrated, pure and bioactive adenoviral vectors was developed. This allows efficient levels of binding to the column media and vector purification without centrifugation or filtration steps. Expanded bed chromatography followed by hollow fiber concentration allows the capture of viral particles directly from cellular extracts with high efficiency and vector purification is achieved in less than one working day with a minimal amount of sample handling, thus presenting an improvement over existing processes. The overall process yield reached 32%, representing an eight-fold improvement over results reported previously, while the purity is comparable to that obtained with the CsCl method.
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Affiliation(s)
- C Peixoto
- IBET/ITQB, Apartado 12, P-2780-901 Oeiras, Portugal
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Carmo M, Peixoto C, Coroadinha AS, Alves PM, Cruz PE, Carrondo MJT. Quantitation of MLV-based retroviral vectors using real-time RT-PCR. J Virol Methods 2004; 119:115-9. [PMID: 15158592 DOI: 10.1016/j.jviromet.2004.03.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2003] [Revised: 03/16/2004] [Accepted: 03/18/2004] [Indexed: 11/19/2022]
Abstract
Murine leukaemia virus-based vectors quantitation is a time consuming process that can take up to five days. In order to reduce this time a real-time RT-PCR was developed. This method quantifies vectors without an RNA extraction step, using AMV reverse transcriptase and LightCycler technology. Besides a low quantitation time, this method has the advantages of using a plasmid DNA standard curve with good reproducibility, and of having a high sensitivity (3 x 10(2) particles/microl) as well as an excellent intra- and inter-assay reproducibility. Although the method described quantifies vector particles with RNA whether these particles are infectious or not, it is possible to use it to determine infectious particles concentration after the establishment of a correlation between particles with RNA and infectious particles, for a given set of conditions. This method can also be used to study vector stability by comparison of infectious particles, total particles and particles with RNA.
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Affiliation(s)
- M Carmo
- IBET/ITQB, Apartado 12, P-2780-901 Oeiras, Portugal
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Dini C, Drochon N, Feteanu S, Guillot JC, Peixoto C, Aszodi J. Synthesis of analogues of the O-beta-D-ribofuranosyl nucleoside moiety of liposidomycins. Part 1: contribution of the amino group and the uracil moiety upon the inhibition of MraY. Bioorg Med Chem Lett 2001; 11:529-31. [PMID: 11229763 DOI: 10.1016/s0960-894x(00)00715-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The O-beta-D-ribofuranosyl nucleoside I is the minimal structural entity of liposidomycins maintaining enzyme inhibitory activity. Modifications performed on both the primary amine and the uracil moieties clearly demonstrate their major contribution to the inhibition of the bacterial translocase (MraY).
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Affiliation(s)
- C Dini
- Medicinal Chemistry Department, Aventis Pharma, Romainville, France.
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Matias PM, Donner P, Coelho R, Thomaz M, Peixoto C, Macedo S, Otto N, Joschko S, Scholz P, Wegg A, Bäsler S, Schäfer M, Egner U, Carrondo MA. Structural evidence for ligand specificity in the binding domain of the human androgen receptor. Implications for pathogenic gene mutations. J Biol Chem 2000; 275:26164-71. [PMID: 10840043 DOI: 10.1074/jbc.m004571200] [Citation(s) in RCA: 414] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The crystal structures of the human androgen receptor (hAR) and human progesterone receptor ligand-binding domains in complex with the same ligand metribolone (R1881) have been determined. Both three-dimensional structures show the typical nuclear receptor fold. The change of two residues in the ligand-binding pocket between the human progesterone receptor and hAR is most likely the source for the specificity of R1881 to the hAR. The structural implications of the 14 known mutations in the ligand-binding pocket of the hAR ligand-binding domains associated with either prostate cancer or the partial or complete androgen receptor insensitivity syndrome were analyzed. The effects of most of these mutants could be explained on the basis of the crystal structure.
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Affiliation(s)
- P M Matias
- Instituto de Tecnologia Quimica e Biológica, Universidade Nova de Lisboa, Apartado 127, 2780 Oeiras, Portugal
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Matias PM, Coelho R, Thomaz M, Peixoto C, Macedo S, Carrondo MA. Structural evidence for ligand specificity in the binding domain of the human Androgen receptor. Acta Crystallogr A 2000. [DOI: 10.1107/s0108767300025691] [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] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Peixoto C. [Induced abortion in case of serious vomiting]. Femina 1976; 4:239-40. [PMID: 12159221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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