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PURPOSE: The service configuration with distinct child and adolescent mental health services (CAMHS) and adult mental health services (AMHS) may be a barrier to continuity of care. Because of a lack of transition policy, CAMHS clinicians have to decide whether and when a young person should transition to AMHS. This study describes which characteristics are associated with the clinicians' advice to continue treatment at AMHS. METHODS: Demographic, family, clinical, treatment, and service-use characteristics of the MILESTONE cohort of 763 young people from 39 CAMHS in Europe were assessed using multi-informant and standardized assessment tools. Logistic mixed models were fitted to assess the relationship between these characteristics and clinicians' transition recommendations. RESULTS: Young people with higher clinician-rated severity of psychopathology scores, with self- and parent-reported need for ongoing treatment, with lower everyday functional skills and without self-reported psychotic experiences were more likely to be recommended to continue treatment. Among those who had been recommended to continue treatment, young people who used psychotropic medication, who had been in CAMHS for more than a year, and for whom appropriate AMHS were available were more likely to be recommended to continue treatment at AMHS. Young people whose parents indicated a need for ongoing treatment were more likely to be recommended to stay in CAMHS. CONCLUSION: Although the decision regarding continuity of treatment was mostly determined by a small set of clinical characteristics, the recommendation to continue treatment at AMHS was mostly affected by service-use related characteristics, such as the availability of appropriate services.
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Trastornos Mentales , Servicios de Salud Mental , Adolescente , Adulto , Niño , Demografía , Familia , Humanos , Trastornos Mentales/diagnóstico , Trastornos Mentales/epidemiología , Trastornos Mentales/terapia , PadresRESUMEN
In the current literature, two distinct and opposite models are suggested to explain the consciousness disorders in schizophrenia. The first one suggests that consciousness disorders rely on a low-level processing deficit, when the second model suggests that consciousness disorders rely on disruption in the ability to consciously access information, with preserved unconscious processing. The current study aims to understand the mechanisms associated with visual consciousness disorder in order to pave the road that will settle the debate regarding these hypotheses. During a functional magnetic resonance imaging session, 19 healthy participants (HC) and 15 patients with schizophrenia (SCZ) performed a visual detection task to compare the neural substrates associated with the conscious access to the visual inputs. The visual detection threshold was significantly higher in SCZ than in HC [t(32) = 3.37, p = 0.002]. Whole-brain ANOVA demonstrated that around the visual detection threshold patients with SCZ failed to activate a large network of brain areas compared to HC. (1) During conscious vision, HC engaged more the left cuneus and the right occipital cortex than patients with SCZ, (2) during unconscious vision, HC engaged a large network that patients with SCZ failed to activate, and finally, (3) during the access to consciousness process, patients with SCZ failed to activate the anterior cingulate cortex. These results suggest that the consciousness disorders in schizophrenia rely on specific dysfunctions depending on the consciousness stage. The disorders of the conscious vision are associated with dysfunction of occipital areas while the ones associated with unconscious vision rely on a large widespread network. Finally, the conscious access to the visual inputs is impaired by a dysfunction of the anterior cingulate cortex. The current study suggests that none of the two suggested models can explain consciousness disorders in schizophrenia. We suggest that there is an alternative model supporting that the conscious access to visual inputs is due to a disengagement of the supragenual anterior cingulate during the unconscious processing of the visual inputs associated with a sensory deficit.
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Estado de Conciencia , Esquizofrenia , Trastornos de la Conciencia/diagnóstico por imagen , Trastornos de la Conciencia/etiología , Humanos , Imagen por Resonancia Magnética , Esquizofrenia/complicaciones , Esquizofrenia/diagnóstico por imagen , Percepción VisualRESUMEN
The psychological effects of isolation have already been described in the literature (polar expeditions, submarines, prison). Nevertheless, the scale of confinement implemented during the COVID-19 pandemic is unprecedented. In addition to reviewing the published studies, we need to anticipate the psychological problems that could arise during or at a distance from confinement. We have gone beyond the COVID-19 literature in order to examine the implications of the known consequences of confinement, like boredom, social isolation, stress, or sleep deprivation. Anxiety, post-traumatic stress disorder, depression, suicidal or addictive behaviours, domestic violence are described effects of confinement, but the mechanisms of emergence of these disorders and their interrelationships remain to be studied. For example, what are the mechanisms of emergence of post-traumatic stress disorders in the context of confinement? We also remind the reader of points of vigilance to be kept in mind with regard to eating disorders and hallucinations. Hallucinations are curiously ignored in the literature on confinement, whereas a vast literature links social isolation and hallucinations. Due to the broad psychopathological consequences, we have to look for these various symptoms to manage them. We quickly summarize the diagnostic and therapeutic approaches already in place, such as telemedicine, which is undergoing rapid development during the COVID-19 crisis.
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Betacoronavirus , Infecciones por Coronavirus , Pandemias , Aislamiento de Pacientes/psicología , Neumonía Viral , Aislamiento Social/psicología , Adulto , Trastornos de Ansiedad/etiología , Trastornos de Ansiedad/psicología , Conducta Adictiva/etiología , Conducta Adictiva/psicología , Tedio , COVID-19 , Niño , Maltrato a los Niños , Infecciones por Coronavirus/psicología , Atención a la Salud , Depresión/etiología , Depresión/psicología , Violencia Doméstica/psicología , Trastornos de Alimentación y de la Ingestión de Alimentos/etiología , Trastornos de Alimentación y de la Ingestión de Alimentos/psicología , Francia , Alucinaciones/etiología , Alucinaciones/psicología , Accesibilidad a los Servicios de Salud , Humanos , Servicios de Salud Mental/organización & administración , Neumonía Viral/psicología , SARS-CoV-2 , Trastornos del Sueño-Vigilia/etiología , Trastornos del Sueño-Vigilia/psicología , Trastornos por Estrés Postraumático/etiología , Trastornos por Estrés Postraumático/psicología , Suicidio/psicología , TelemedicinaRESUMEN
The clinical efficacy of neurofeedback is still a matter of debate. This paper analyzes the factors that should be taken into account in a transdisciplinary approach to evaluate the use of EEG NFB as a therapeutic tool in psychiatry. Neurofeedback is a neurocognitive therapy based on human-computer interaction that enables subjects to train voluntarily and modify functional biomarkers that are related to a defined mental disorder. We investigate three kinds of factors related to this definition of neurofeedback. We focus this article on EEG NFB. The first part of the paper investigates neurophysiological factors underlying the brain mechanisms driving NFB training and learning to modify a functional biomarker voluntarily. Two kinds of neuroplasticity involved in neurofeedback are analyzed: Hebbian neuroplasticity, i.e. long-term modification of neural membrane excitability and/or synaptic potentiation, and homeostatic neuroplasticity, i.e. homeostasis attempts to stabilize network activity. The second part investigates psychophysiological factors related to the targeted biomarker. It is demonstrated that neurofeedback involves clearly defining which kind of relationship between EEG biomarkers and clinical dimensions (symptoms or cognitive processes) is to be targeted. A nomenclature of accurate EEG biomarkers is proposed in the form of a short EEG encyclopedia (EEGcopia). The third part investigates human-computer interaction factors for optimizing NFB training and learning during the closed loop interaction. A model is proposed to summarize the different features that should be controlled to optimize learning. The need for accurate and reliable metrics of training and learning in line with human-computer interaction is also emphasized, including targeted biomarkers and neuroplasticity. All these factors related to neurofeedback show that it can be considered as a fertile ground for innovative research in psychiatry.
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Electroencefalografía , Neurorretroalimentación/métodos , Psiquiatría/métodos , Terapia Cognitivo-Conductual/métodos , Humanos , Trastornos Mentales/terapiaRESUMEN
Auditory hallucinations (AH) are often considered a sign of a psychotic disorder. This is promoted by the DSM-5 category of Other Specified Schizophrenia Spectrum And Other Psychotic Disorder (OSSSOPD), the diagnostic criteria for which are fulfilled with the sole presence of persistent AH, in the absence of any other psychotic symptoms. And yet, persistent AH are not synonymous with having a psychotic disorder, and should therefore not be uncritically treated as such. Many people who seek treatment for persistent AH have no other psychotic symptoms, have preserved reality-testing capacities, and will never develop a schizophrenia spectrum disorder. Instead, hallucinations may be the result of many different causes, including borderline personality disorder, post-traumatic stress disorder (PTSD), hearing loss, sleep disorders or brain lesions, and they may even occur outside the context of any demonstrable pathology. In such cases, the usage of the DSM-5 diagnosis of OSSSOPD would be incorrect, and it may prompt unwarranted treatment with antipsychotic medication. We therefore argue that a DSM-5 diagnosis of Schizophrenia Spectrum Disorder (or any other type of psychotic disorder) characterized by AH should require at least one more symptom listed under the A-criterion (i.e. delusions, disorganized speech, disorganized or catatonic behavior or negative symptoms). Adhering to these more stringent criteria may help to distinguish between individuals with persistent AH which are part of a psychotic disorder, for whom antipsychotic medication may be helpful, and individuals with AH in the absence of such a disorder who may benefit from other approaches (e.g. different pharmacological interventions, improving coping style, trauma-related therapy).
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Alucinaciones/diagnóstico , Trastornos Psicóticos/psicología , Psicología del Esquizofrénico , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Humanos , Esquizofrenia/complicacionesRESUMEN
OBJECTIVE: Structural MRI (sMRI) increasingly offers insight into abnormalities inherent to schizophrenia. Previous machine learning applications suggest that individual classification is feasible and reliable and, however, is focused on the predictive performance of the clinical status in cross-sectional designs, which has limited biological perspectives. Moreover, most studies depend on relatively small cohorts or single recruiting site. Finally, no study controlled for disease stage or medication's effect. These elements cast doubt on previous findings' reproducibility. METHOD: We propose a machine learning algorithm that provides an interpretable brain signature. Using large datasets collected from 4 sites (276 schizophrenia patients, 330 controls), we assessed cross-site prediction reproducibility and associated predictive signature. For the first time, we evaluated the predictive signature regarding medication and illness duration using an independent dataset of first-episode patients. RESULTS: Machine learning classifiers based on neuroanatomical features yield significant intersite prediction accuracies (72%) together with an excellent predictive signature stability. This signature provides a neural score significantly correlated with symptom severity and the extent of cognitive impairments. Moreover, this signature demonstrates its efficiency on first-episode psychosis patients (73% accuracy). CONCLUSION: These results highlight the existence of a common neuroanatomical signature for schizophrenia, shared by a majority of patients even from an early stage of the disorder.
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Sustancia Gris/diagnóstico por imagen , Sustancia Gris/patología , Procesamiento de Imagen Asistido por Computador/normas , Aprendizaje Automático , Imagen por Resonancia Magnética/normas , Esquizofrenia/diagnóstico por imagen , Esquizofrenia/patología , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Esquizofrenia/fisiopatología , Sensibilidad y Especificidad , Índice de Severidad de la EnfermedadRESUMEN
OBJECTIVES: Neurofeedback is a technique that aims to teach a subject to regulate a brain parameter measured by a technical interface to modulate his/her related brain and cognitive activities. However, the use of neurofeedback as a therapeutic tool for psychiatric disorders remains controversial. The aim of this review is to summarize and to comment the level of evidence of electroencephalogram (EEG) neurofeedback and real-time functional magnetic resonance imaging (fMRI) neurofeedback for therapeutic application in psychiatry. METHOD: Literature on neurofeedback and mental disorders but also on brain computer interfaces (BCI) used in the field of neurocognitive science has been considered by the group of expert of the Neurofeedback evaluation & training (NExT) section of the French Association of biological psychiatry and neuropsychopharmacology (AFPBN). RESULTS: Results show a potential efficacy of EEG-neurofeedback in the treatment of attentional-deficit/hyperactivity disorder (ADHD) in children, even if this is still debated. For other mental disorders, there is too limited research to warrant the use of EEG-neurofeedback in clinical practice. Regarding fMRI neurofeedback, the level of evidence remains too weak, for now, to justify clinical use. The literature review highlights various unclear points, such as indications (psychiatric disorders, pathophysiologic rationale), protocols (brain signals targeted, learning characteristics) and techniques (EEG, fMRI, signal processing). CONCLUSION: The field of neurofeedback involves psychiatrists, neurophysiologists and researchers in the field of brain computer interfaces. Future studies should determine the criteria for optimizing neurofeedback sessions. A better understanding of the learning processes underpinning neurofeedback could be a key element to develop the use of this technique in clinical practice.
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Neurorretroalimentación/métodos , Psiquiatría/métodos , Psiquiatría/tendencias , Encéfalo/fisiopatología , Mapeo Encefálico/métodos , Electroencefalografía , Humanos , Imagen por Resonancia Magnética , Trastornos Mentales/diagnóstico , Trastornos Mentales/fisiopatología , Trastornos Mentales/psicología , Neurorretroalimentación/fisiologíaRESUMEN
Hallucinations, and auditory hallucinations (AH) in particular, constitute the most typical and disabling schizophrenia symptoms. Although visual hallucinations (VH) have been largely neglected in psychiatric disorders, a recent review reported a 27% mean prevalence of VH in schizophrenia patients. The pathophysiology underlying VH in schizophrenia remains elusive. Several schizophrenia studies reported a significant effect of age on VH; therefore, we tested the hypothesis that the neurodevelopmental model of schizophrenia may explain VH occurrence. We analyzed cortex sulcation, a marker of brain development, in healthy controls (HCs) and two subgroups of carefully selected schizophrenia patients suffering from hallucinations: patients with only AH (that is, patients who never reported VH) and patients with audio-visual hallucinations (A+VH). Different cortical sulcation and left-right sulcal asymmetry were found between A+VH and AH patients, with decreased sulcation in both A+VH and AH patients in comparison with the HCs. Although a specific association between VH and neurodegenerative mechanisms, for example, in Body-Lewy Dementia or Parkinson's Disease, has previously been reported in the literature, the current study provides the first neuroimaging evidence of an association between VH and neurodevelopmental mechanisms.
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Encéfalo/fisiopatología , Alucinaciones/fisiopatología , Esquizofrenia/fisiopatología , Adulto , Estudios de Casos y Controles , Imagen de Difusión por Resonancia Magnética/métodos , Femenino , Humanos , MasculinoRESUMEN
Cognitive deficits have been only recently recognized as a major phenotype determinant of major depressive disorder, although they are an integral part of the definition of the depressive state. Congruent evidence suggest that these cognitive deficits persist beyond the acute phase and may be identified at all ages. The aim of the current study was to review the main meta-analyses on cognition and depression, which encompasses a large range of cognitive domains. Therefore, we discuss the "cold" (attention, memory, executive functions) and "hot" (emotional bias) cognitive impairments in MDD, as well as those of social cognition domains (empathy, theory of mind). Several factors interfere with cognition in MDD such as clinical (melancholic, psychotic...) features, age, age of onset, illness severity, medication and comorbid condition. As still debated in the literature, the type of relationship between the severity of cognitive symptoms and functioning in depression is detailed, thus highlighting their predictive value of functional outcome, independently of the affective symptoms. A better identification of the cognitive deficits in MDD and a monitoring of the effects of different treatments require appropriate instruments, which may be developed by taking advantage of the increasing success of computing tools. Overall, current data suggest a core role for different cognitive deficits in MDD, therefore opening new perspectives for optimizing the treatment of depression.
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Trastornos del Conocimiento/psicología , Cognición , Trastorno Depresivo Mayor/psicología , Trastornos del Conocimiento/etiología , Trastorno Depresivo Mayor/complicaciones , HumanosRESUMEN
CONTEXT: The growing field of new technologies offers new ways to tackle psychiatric disorders (e.g. virtual reality therapy, neurofeedback, etc.). Serious games (SG) are computer applications combining serious aspects with the fun side of video games. This kind of new media could find applications to treat psychiatric disorders. OBJECTIVE: This paper summarizes available data in the literature about therapeutic interventions using SG in psychiatry. METHOD: A Medline search was conducted in May 2014 using the following Medical Subject Headings (MESH) terms: "video games", "mental disorders", and "psychotherapy". RESULTS: Only 10 relevant references were identified according to our inclusion criteria. These studies show that SG are very interesting tools to improve the management of psychiatric disorders. However, only low-level evidence is available to support treatment with SG in patients suffering from psychiatric disorders. Indeed, randomized controlled trials are rare in this field of research. CONCLUSION: SG provide promising therapeutic innovations for the management of psychiatric disorders. Moreover, they could easily be developed in accordance with current dimensional approaches. Finally, major issues to facilitate the implementation of future work on SG in psychiatry are discussed.
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Juegos Experimentales , Trastornos Mentales/terapia , Psiquiatría/métodos , Psicoterapia/métodos , Juegos de Video , Humanos , Trastornos Mentales/psicología , Ensayos Clínicos Controlados Aleatorios como AsuntoRESUMEN
Hallucinations constitute one of the most representative and disabling symptoms of schizophrenia. Several Magnetic Resonance Imaging (MRI) findings support the hypothesis that distinct patterns of connectivity, particularly within networks involving the hippocampal complex (HC), could be associated with different hallucinatory modalities. The aim of this study was to investigate HC connectivity as a function of the hallucinatory modality, that is, auditory or visual. Two carefully selected subgroups of schizophrenia patients with only auditory hallucinations (AH) or with audio-visual hallucinations (A+VH) were compared using the following three complementary multimodal MRI methods: resting state functional MRI, diffusion MRI and structural MRI were used to analyze seed-based Functional Connectivity (sb-FC), Tract-Based Spatial Statistics (TBSS) and shape analysis, respectively. Sb-FC was significantly higher between the HC, the medial prefrontal cortex (mPFC) and the caudate nuclei in A+VH patients compared with the AH group. Conversely, AH patients exhibited a higher sb-FC between the HC and the thalamus in comparison with the A+VH group. In the A+VH group, TBSS showed specific higher white matter connectivity in the pathways connecting the HC with visual areas, such as the forceps major and the inferior-fronto-occipital fasciculus than in the AH group. Finally, shape analysis showed localized hippocampal hypertrophy in the A+VH group. Functional results support the fronto-limbic dysconnectivity hypothesis of schizophrenia, while specific structural findings indicate that plastic changes are associated with hallucinations. Together, these results suggest that there are distinct connectivity patterns in patients with schizophrenia that depend on the sensory-modality, with specific involvement of the HC in visual hallucinations.
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Alucinaciones/patología , Alucinaciones/fisiopatología , Hipocampo/patología , Hipocampo/fisiopatología , Esquizofrenia/patología , Esquizofrenia/fisiopatología , Adulto , Antipsicóticos/uso terapéutico , Percepción Auditiva , Encéfalo/patología , Encéfalo/fisiopatología , Mapeo Encefálico , Núcleo Caudado/patología , Núcleo Caudado/fisiopatología , Imagen de Difusión por Resonancia Magnética , Femenino , Alucinaciones/tratamiento farmacológico , Alucinaciones/etiología , Humanos , Imagen por Resonancia Magnética , Masculino , Fibras Nerviosas Mielínicas/patología , Fibras Nerviosas Mielínicas/fisiología , Vías Nerviosas/patología , Vías Nerviosas/fisiopatología , Corteza Prefrontal/patología , Corteza Prefrontal/fisiopatología , Descanso/fisiología , Esquizofrenia/complicaciones , Esquizofrenia/tratamiento farmacológico , Tálamo/patología , Tálamo/fisiopatología , Vías Visuales/patología , Vías Visuales/fisiopatología , Percepción VisualRESUMEN
CONTEXT: Informed consent to research remains a complex issue, while sometimes staying difficult to obtain, even in the general population. This problem may be maximized with patients suffering from schizophrenia. OBJECTIVE: This paper summarizes available data in the literature about informed consent for research involving patients suffering from schizophrenia. METHOD: Medline and Google Scholar searches were conducted using the following MESH terms: schizophrenia, informed consent and research. RESULTS: Studies using dedicated standardized scales (e.g. MacCAT-CR) revealed a decrease in the capacity to consent of patients with schizophrenia when compared with healthy individuals. Keeping in mind that schizophrenia is an heterogeneous disorder, patients with the lowest insight as well as those with the most severe cognitive symptoms appeared more impaired in their capacity to consent. Such a poor capacity to understand and consent to trials was shown linked with alterations in decision-making. For these specific patients, interventions may be set up to increase their capacity to consent. Various strategies were proposed: enhanced consent forms, extended discussion, test/feedback method or multimedia interventions. Among them, interventions relying on communication and the growing field of information technologies (e.g. web-based tools) seem promising. Finally, associations grouping families and patients (like the French Association UNAFAM) may facilitate the involvement of patients in research programs with safer conditions. CONCLUSION: Patients suffering from schizophrenia appear able to consent to research programs when suitable interventions are proposed. Further studies are now needed to optimize and individualize such interventions.
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Consentimiento Informado/ética , Consentimiento Informado/normas , Esquizofrenia , Psicología del Esquizofrénico , Humanos , Competencia Mental , Pacientes , Escalas de Valoración PsiquiátricaRESUMEN
INTRODUCTION: Hallucinations constitute understudied symptoms in borderline personality disorders (BPD), which can be observed in about 30% of the patients, essentially in the auditory modality. Most of these experiences are transitory, triggered by intermittent stressors, but chronicity remains a major cause of concern. In order to better circumscribe hallucinations in BPD, we summarized the literature on this particular phenomenon. METHODS: We conducted a review using Medline, Scopus and Google Scholar databases up to March 2013, using the following keywords combinations: "borderline personality disorder", "hallucinat*" and "psychotic symptoms". Papers were included in the review if they were published in an English or French language peer-reviewed journal; the study enrolled patients with BPD; and the diagnosis was made according to the Diagnostic and Statistical Manual (DSM) criteria. Fifteen studies published between 1985 and 2012, merging a total of 635 patients, were retained. RESULTS: The hallucinatory experiences observed in BPD appeared phenomenologically similar to those described in the schizophrenia spectrum in terms of vividness, duration, spatial localization, beliefs about malevolence or omnipotence. Conversely, the hallucinatory content appeared more negative and potentially more distressful. Crucially, this literature search also revealed that these symptoms have long been regarded as "pseudo-hallucinations" (or "hallucination-like symptoms"). This concept was judged of poor scientific validity, inducing stigma for BPD patients in that it casts doubt on the authenticity of these experiences while disqualifying the related distress. This situation points out that research should focus more on understanding hallucinations in BPD than questioning their existence. Interestingly, recent comorbidity studies reopened a 40-year debate on the potential links that may exist between BPD and psychosis. Initially considered as a para-psychotic disorder, BPD was effectively redefined as an independent category by Otto F. Kernberg, leading to the DSM-III definition, excluding any psychotic symptom. However, hallucinations per se remain insufficient to diagnose schizophrenia, while comorbid substance use disorders as well as mood disorders, cannot explain all the hallucination occurrences in BPD. By referring to the "psychotic-reactivity-to-stress" framework, we proposed to understand hallucinations in BPD in relation to a hyperactivity of the hypothalamic-pituitary-adrenal axis and of the dopaminergic system under stress. Childhood trauma may have a central role in such a model. The prevalence of childhood trauma is high in BPD but this factor was also evidenced strongly linked with hallucinations in non-clinical populations. Comparisons are finally made and discussed between hallucinations occurring in BPD and those observed in posttraumatic stress disorder, another frequent comorbid disorder. CONCLUSION: Almost a third of patients with BPD experiences hallucinations, and future studies will have to clarify the pathophysiology of this symptom, still poorly understood. Both the models of psychotic-reactivity-to-stress, as well as the role of childhood trauma in the context of a gene X environment interaction, appear to be promising cues for future research.
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Trastorno de Personalidad Limítrofe/diagnóstico , Alucinaciones/diagnóstico , Trastorno de Personalidad Limítrofe/epidemiología , Trastorno de Personalidad Limítrofe/psicología , Estudios Transversales , Alucinaciones/epidemiología , Alucinaciones/psicología , Humanos , Trastornos Psicóticos/diagnóstico , Trastornos Psicóticos/epidemiología , Trastornos Psicóticos/psicologíaAsunto(s)
Depresión Posparto/prevención & control , Pediatras , Psiquiatría , Depresión Posparto/diagnóstico , Enfermedades del Sistema Digestivo/prevención & control , Femenino , Humanos , Lactante , Conducta del Lactante , Recién Nacido , Enfermedades del Recién Nacido/prevención & control , Estudios Longitudinales , Relaciones Madre-Hijo , Prevención Secundaria , Trastornos del Sueño-Vigilia/prevención & controlRESUMEN
In the last decades, schizophrenia has intensively been studied using various brain imaging techniques. However, several potential confounding factors limited their interpretation power (e.g. chronicity, the impact of antipsychotic medication). By considering psychosis as a continuum of changes starting from mild cognitive impairments to serious psychotic symptoms, it became possible to provide deeper insight in the neurobiological mechanisms underlying the onset of psychosis by focusing on at-risk individuals and first-episodes. Recent brain imaging meta-analyses of the first episode psychosis (FEP), noteworthy reported conjoint bilateral structural and functional differences at the level of the insula, the superior temporal gyrus and the medial frontal gyrus, encompassing the anterior cingulate cortex. In the present review, we thus provide an update of brain imaging studies of FEP with a particular emphasis on more recent anatomical, functional and molecular explorations. Specifically, we provide 1) a review of the common features observed in individuals with high risk for psychosis and changes characterizing the transition to psychosis, 2) a description of the environmental and drug factors influencing these abnormalities, 3) how these findings in FEP may differ from those observed in chronic individuals with schizophrenia, and 4) a short overview of new classification algorithms able to use MRI findings as valuable biomarkers to guide early detection in the prodromal phase of psychosis.
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Encéfalo/fisiopatología , Interpretación de Imagen Asistida por Computador , Trastornos Psicóticos/diagnóstico , Trastornos Psicóticos/fisiopatología , Esquizofrenia/fisiopatología , Psicología del Esquizofrénico , Algoritmos , Encéfalo/efectos de los fármacos , Mapeo Encefálico , Enfermedad Crónica , Imagen de Difusión por Resonancia Magnética , Progresión de la Enfermedad , Dominancia Cerebral/fisiología , Humanos , Imagen por Resonancia Magnética , Pronóstico , Trastornos Psicóticos/tratamiento farmacológico , Trastornos Psicóticos/psicología , Esquizofrenia/diagnóstico , Trastorno de la Personalidad Esquizotípica/diagnóstico , Trastorno de la Personalidad Esquizotípica/fisiopatología , Trastorno de la Personalidad Esquizotípica/psicologíaRESUMEN
BACKGROUND: Atypical antipsychotics have a favourable risk/benefit profile in early onset schizophrenia (EOS). However, despite increasing use of psychotropic medication in children and adolescents, their endocrine and metabolic side-effects (weight gain, obesity, and related metabolic abnormalities such as hyperglycaemia and dyslipidemia) are of particular concern, especially within this paediatric population that appears to be at greater risk as compared with adults for antipsychotic-induced metabolic adverse effects. In addition to medication, many factors contribute to weigh gain in psychiatric patients, including sedentary lifestyle and poor diet. Excessive weigh gain has several deleterious effects in psychiatric patients, including stigmatization and further social withdrawal, and non compliance with medication. Furthermore, excessive corpulence may evolve to a metabolic syndrome with a high-risk state for future cardiovascular morbidity and mortality in adult age. Because youths are still developing at the time of psychotropic drug exposure, in a context of physiological changes in hormonal and endocrines levels and body composition, most reference values need to be adjusted for gender, age and growth charts. Hence, sex- and age-adjusted BMI percentiles and BMI Z scores are crucial to assess weight gain in children and adolescents. LITERATURE FINDINGS: Obesity thresholds have been proposed to define "at risk" categories of patients. In recently issued guidelines, thresholds for antipsychotic-induced weight gain in adults have been set at a 5% increase or one point increase in BMI unit. To date, no definition has reached a consensus in childhood and adolescence. However, some at risk states requiring action are proposed in literature: more than 5% increase in weight within a three-month period; more than half a point increase in BMI Z score; between 85th and 95th BMI percentile plus one adverse health consequence (i.e. hyperglycaemia, dyslipidemia, hyperinsulinemia, hypertension, or orthopaedic, gallbladder, or sleep disorder); or more than 95th BMI percentile or abdominal obesity (i.e. abdominal circumference above 90th percentile). As a matter of fact, numerous studies that have assessed weight gain during antipsychotic treatment are clearly limited, either because of their short duration (a few weeks), or because of their methodology: indeed, only weight gain is generally reported as an assessment tool. Merely noting an increase in body weight over time does not in itself signify a problem, and may underscore the importance of excessive corpulence growth as compared with controls. Adjusted BMI percentiles and BMI Z scores were calculated in only a few studies. AIM OF THE STUDY: This pilot study focuses on the metabolic effects of risperidone in children and adolescents up to 16 years of age. This study is part of a larger, regional study on metabolic side effects of antipsychotic medication in adults, promoted by the university hospital centre in Lille, France. DESIGN OF THE STUDY: Patients included in the study were referred to our department of child and adolescent psychiatry for EOS (K-SADS). They had received no antipsychotic treatment prior to their inclusion. Weight, height, sex- and age-related BMI percentiles and BMI Z scores, waist circumference, blood pressure, fasting triglyceride levels, fasting total and high-density lipoprotein cholesterol levels, and fasting glucose level were measured at M0, M3, and M6. BMI, sex- and age-related BMI percentiles and adjusted BMI Z scores were obtained from tables and calculator (www.kidsnutrition.org). RESULTS: Twenty-six children and adolescents (21 males, five females) aged 7 to 15.5 years (mean=12.9 years, sd=2.3) were included. They all received a diagnosis of schizophrenia according to the schedule for affective disorders and schizophrenia for school-aged children (K-SADS). They all received risperidone from 1mg/day to a maximum of 6 mg/day. Statistical analysis principally shows a significant link between prescription of risperidone in EOS and six-months increases of BMI (increase of 4.7 kg/m(2), p<0.0001), sex- and age-adjusted BMI percentile (increase of 29.3 points, p<0.0025), and BMI Z scores (increase of 1.1 point, p<0.0001). No patient showed metabolic syndrome, but one girl presented with a 1g/l increase of fasting total cholesterol at two-months. DISCUSSION: Despite the limited number of children included, our results confirm a strong link between prescription of risperidone in EOS and risk of obesity. Clinicians and caregivers need to be aware of the potential endocrine and metabolic adverse effects of atypical antipsychotics, and systematically ask for family history of metabolic disorder, life style, diet and habits. With adolescents, the sole monitoring of weight gain, and even of BMI, underestimates the gain of corpulence. One methodological implication of our study is that adjusted BMI Z scores are the best-suited measure to assess long-term drug-induced weight gain in comparison to developmental changes. CONCLUSION: Alternative treatment should be considered in some cases. Other antipsychotics, like aripiprazole, may have a better benefit/risk ratio and then may be prescribed as a first prescription or as a switch. Associations of antipsychotics may also be of interest but we lack controlled studies in children and adolescents. In some cases, alternative treatments like repetitive trans-cranial magnetic stimulations (rTMS) may be required. Their efficacy and their place in the therapeutic strategy of pharmacoresistant schizophrenia in children and adolescents have to be assessed in regard to metabolic and blood side effects of clozapine.
Asunto(s)
Antipsicóticos/efectos adversos , Hipercolesterolemia/inducido químicamente , Síndrome Metabólico/inducido químicamente , Obesidad/inducido químicamente , Risperidona/efectos adversos , Esquizofrenia/tratamiento farmacológico , Psicología del Esquizofrénico , Adolescente , Factores de Edad , Antipsicóticos/uso terapéutico , Índice de Masa Corporal , Niño , Femenino , Humanos , Hipercolesterolemia/diagnóstico , Masculino , Síndrome Metabólico/diagnóstico , Obesidad/diagnóstico , Proyectos Piloto , Medición de Riesgo , Factores de Riesgo , Risperidona/uso terapéutico , Aumento de Peso/efectos de los fármacosRESUMEN
Healthcare recommendations for people with disorders of sexual development (DSDs) include mental health attention and active participation of psychiatrists and psychologists in dedicated multidisciplinary teams. Therefore, it seems crucial for them to improve knowledge about specific difficulties and needs of these patients. The aim of this article is to report in a synthesizing manner the recent works evaluating the mental health and psychological status of individuals with DSDs. After research conducted using PubMed and ScienceDirect, 18 studies were inventoried and qualitatively analyzed in response to three main questions: Do individuals with DSDs suffer more frequently and/or more severely from psychological conditions or mental disorders? From what kind of disorder do they suffer? and What are the determinant factors involved in their development? This work highlights an increased risk of affective disorders in individuals with DSDs, particularly anxiety and depressive disorders and interpersonal difficulties. Studies identified some potentially determining factors implicated in their development, among which are the etiology of DSDs, the life stage, the age at the time of diagnosis, and the lack of conformity of sexual phenotype with sex assignment. Taken together, the etiology of DSDs, the lack of conformity of sexual phenotype with sex assignment, and the feeling of being different from peers seem to be interesting factors to study in the future. Multicentric and longitudinal studies using standardized evaluation and control groups should be the most robust way to improve knowledge about these preoccupations.