Revistas
Revista:
JOURNAL OF CARDIOVASCULAR DEVELOPMENT AND DISEASE
ISSN:
2308-3425
Año:
2022
Vol.:
9
N°:
1
Págs.:
25
(1) Background: Patients with schizophrenia have higher mortality, with cardiovascular diseases being the first cause of mortality. This study aims to estimate the excess risk of hospital admission for cardiovascular events in schizophrenic patients, adjusting for comorbidity and risk factors. (2) Methods: The APNA study is a dynamic prospective cohort of all residents in Navarra, Spain. A total of 505,889 people over 18 years old were followed for five years. The endpoint was hospital admissions for a cardiovascular event. Direct Acyclic Graphs (DAG) and Cox regression were used. (3) Results: Schizophrenic patients had a Hazard Ratio (HR) of 1.414 (95% CI 1.031-1.938) of hospital admission for a cardiovascular event after adjusting for age, sex, hypertension, type 2 diabetes, dyslipidemia, smoking, low income, obesity, antecedents of cardiovascular disease, and smoking. In non-adherent to antipsychotic treatment schizophrenia patients, the HR was 2.232 (95% CI 1.267-3.933). (4) Conclusions: Patients with schizophrenia have a higher risk of hospital admission for cardiovascular events than persons with the same risk factors without schizophrenia. Primary care nursing interventions should monitor these patients and reduce cardiovascular risk factors.
Revista:
FRONTIERS IN PSYCHIATRY
ISSN:
1664-0640
Año:
2021
Vol.:
12
Págs.:
786113
Recent functional neuroimaging studies suggest that the brain networks responsible for time processing are involved during other cognitive processes, leading to a hypothesis that time-related processing is needed to perform a range of tasks across various cognitive functions. To examine this hypothesis, we analyze whether, in healthy subjects, the brain structures activated or deactivated during performance of timing and oddball-detection type tasks coincide. To this end, we conducted two independent signed differential mapping (SDM) meta-analyses of functional magnetic resonance imaging (fMRI) studies assessing the cerebral generators of the responses elicited by tasks based on timing and oddball-detection paradigms. Finally, we undertook a multimodal meta-analysis to detect brain regions common to the findings of the two previous meta-analyses. We found that healthy subjects showed significant activation in cortical areas related to timing and salience networks. The patterns of activation and deactivation corresponding to each task type partially coincided. We hypothesize that there exists a time and change-detection network that serves as a common underlying resource used in a broad range of cognitive processes.
Revista:
JOURNAL OF CLINICAL MEDICINE
ISSN:
2077-0383
Año:
2021
Vol.:
10
N°:
13
Págs.:
2859
Background: We analyzed the relationship between the prevalence of schizophrenia and the season of birth and gestation during a period of an influenza pandemic. Methods: Cross-sectional analysis of a prospective population-based cohort of 470,942 adults. We fitted multivariant logistic regression models to determine whether the season of birth and birth in an influenza-pandemic year (1957, 1968, 1977) was associated with schizophrenia. Results: 2077 subjects had been diagnosed with schizophrenia. Logistic regression identified a significantly greater prevalence of schizophrenia in men than in women (OR = 1.516, CI 95% = 1.388-1.665); in those born in the winter or spring than in those born in the summer or autumn (OR = 1.112, CI 95% = 1.020-1.212); and in those born in a period of an influenza pandemic (OR = 1.335, CI 95% = 1.199-1.486). The increase in risk was also significant when each influenza pandemic year was analyzed separately. However, neither month of birth nor season of birth, when each of the four were studied individually, were associated with a statistically significant increase in that risk. Conclusions: The winter-spring period and the influenza pandemics are independent risk factors for developing schizophrenia. This study contradicts many previous studies and thus revitalizes a locked debate in understanding the neurodevelopmental hypothesis of this disorder.
Revista:
JOURNAL OF MEDICAL INTERNET RESEARCH
ISSN:
1438-8871
Background: Health awareness initiatives are frequent but their efficacy is a matter of controversy. We have investigated the effect of the Eating Disorder Awareness Week and Wake Up Weight Watchers campaigns on Twitter. Objective: We aimed to examine whether the Eating Disorder Awareness Week and Wake Up Weight Watchers initiatives increased the volume and dissemination of Twitter conversations related to eating disorders and investigate what content generates the most interest on Twitter. Methods: Over a period of 12 consecutive days in 2018, we collected tweets containing the hashtag #wakeupweightwatchers and hashtags related to Eating Disorder Awareness Week (#eatingdisorderawarenessweek, #eatingdisorderawareness, or #EDAW), with the hashtag #eatingdisorder as a control. The content of each tweet was rated as medical, testimony, help offer, awareness, pro-ana, or anti-ana. We analyzed the number of retweets and favorites generated, as well as the potential reach and impact of the hashtags and the characteristics of contributors. Results: The number of #wakeupweightwatchers tweets was higher than that of Eating Disorder Awareness Week and #eatingdisorder tweets (3900, 2056, and 1057, respectively). The content of tweets was significantly different between the hashtags analyzed (P<.001). Medical content was lower in the awareness campaigns. Awareness and help offer content were lower in #wakeupweightwatchers tweets. Retweet and favorite ratios were highest in #wakeupweightwatchers tweets. Eating Disorder Awareness Week achieved the highest impact, and very influential contributors participated. Conclusions: Both awareness campaigns effectively promoted tweeting about eating disorders. The majority of tweets did not promote any specific preventive or help-seeking behaviors.
Revista:
MEDICINE (ELSEVIER)
ISSN:
0304-5412
Año:
2019
Vol.:
12
N°:
86
Págs.:
5023 - 5036
Psychotic disorders are an heterogeneous group of diseases characterized by a symptomatology related to break with reality. Because its severity, schizophrenia is the most relevant disorder, involving the both subject and his family. Classified as neurodevelopmental disease, whose symptoms appear during pregnancy, which evolves to chronicity, and in which relapses along the life are frequent. In the latest version of the classification of the American Psychiatric Association (DSM-5) all psychotic disorders are classified in the same chapter.
Autores:
Sanchez-Villegas, A. (Autor de correspondencia); Cabrera-Suarez, B. ; Molero, Patricio; et al.
Revista:
BMC PSYCHIATRY
ISSN:
1471-244X
Año:
2019
Vol.:
19
N°:
1
Págs.:
63
BackgroundThe role of dietary patterns in the prevention of unipolar depression has been analyzed in several epidemiological studies. The primary aims of this study are to determine the effectiveness of an extra-olive oil-enriched Mediterranean diet in reducing the recurrence of depression and improving the symptoms of this condition.MethodsMulticenter, two-arm, parallel-group clinical trial. Arm 1, extra-virgin olive oil Mediterranean diet; Arm 2, control group without nutritional intervention. Dieticians are in charge of the nutritional intervention and regular contact with the participants. Contacts are made through our web platform (https://predidep.es/participantes/) or by phone. Recurrence of depression is assessed by psychiatrists and clinical psychologists through clinical evaluations (semi-structured clinical interviews: Spanish SCID-I). Depressive symptoms are assessed with the Beck Depression Inventory. Information on quality of life, level of physical activity, dietary habits, and blood, urine and stool samples are collected after the subject has agreed to participate in the study and once a year.DiscussionTo the best of our knowledge, the PREDI-DEP trial is the first ongoing randomized clinical trial designed to assess the role of the Mediterranean diet in the prevention of recurrent depression. It could be a cost-effective approach to avoid recurrence and improve the quality of life of these patients.Trial registrationThe study has been prospectively registered in the U.S. National Library of Medicine (https://clinicaltrials.gov) with NCT number: NCT03081065.
Revista:
MEDICINE (ELSEVIER)
ISSN:
0304-5412
Año:
2019
Vol.:
12
N°:
86
Págs.:
5075 - 5080
Although antipsychotic drugs are effective against positive psychosis symptoms, their effectiveness is limited against negative ones. Treatment has to be supplemented with non-pharmacological measures (psychoeducation, cognitive rehabilitation, social skills training). One of the greatest challenges is therapeutic adherence, being crucial to achieve a good evolution. The best therapeutic option for treatment-resistant schizophrenia is clozapine.
Autores:
Gurpegui, D.; Ortuño, Felipe; Gurpegui, M. (Autor de correspondencia)
Revista:
JOURNAL OF AFFECTIVE DISORDERS
ISSN:
0165-0327
Año:
2019
Vol.:
243
Págs.:
494 - 502
Background: The aim of this naturalistic longitudinal study was to add evidence regarding the potential of Cloninger's temperament traits (novelty seeking, harm avoidance, reward dependence and persistence) for predicting the effect of pharmacological treatment on the rates of therapeutic response and remission. Methods: The study was based on 200 outpatients with unipolar depressive disorders of different severity and course of illness, and extended up to 6 months of follow-up. Patients were assessed in their temperament with the Tridimensional Personality Questionnaire (TPQ) and their condition was classified (in course and severity) according to the International Classification of Diseases, Tenth revision (ICD-10) diagnostic criteria for research. Patients were blindly rated (concerning other predicting variables) on the improved Clinical Global Impression-Severity scale for depression (iCGI-S) at baseline, 6 weeks, 3 months and 6 months. Outcome measures at the last observation carried forward were therapeutic response (reduction of >= 50% in the last iCGIS) and remission (last iCGI-S = 0), which were available for 187 patients. Results: Remission was independently and directly associated with length of follow-up, and inversely with the baseline iCGI-S score and harm avoidance (patients in the high tertile had a 2.7 likelihood of non-remission in comparison with those in the low tertile); persistence was found to have a complex, V-shape relationship with remission. Within a sub-sample of more severe cases (n = 118), having higher harm avoidance scores, a more favorable outcome was associated with higher reward dependence and the non-smoking condition. Limitations: With a naturalistic, non-experimental design, the sample may not be representative of the general population. Conclusions: Temperament traits may help predict outcome in patients treated for depression.
Revista:
HELIYON
ISSN:
2405-8440
Año:
2018
Vol.:
4
N°:
12
Págs.:
e01004
Schizophrenia (SZ) is associated with deficits in both temporal and salience processing. The underlying neurological dysfunctions in both processes, which are interrelated and share neuroanatomical bases, remain poorly understood. The principal objective of this study was to elucidate whether there are any brain regions that show abnormal response during timing and oddball tasks in patients with SZ. To this end, we conducted a signed differential mapping (SDM) meta-analysis of functional magnetic resonance imaging (fMRI) studies assessing abnormal responses elicited by tasks based on the oddball paradigm in patients with SZ. We conducted a similar SDM meta-analysis of neuroimaging studies of timing tasks in SZ. Finally, we undertook a multimodal meta-analysis to detect the common findings of the two previous meta-analyses. We found that SZ patients showed hypoactivation in cortical and subcortical areas related to timing. The dysfunction observed during timing tasks partially coincided with deficiencies in change-detection functions (particularly in the case of preattentional processing in the mismatch negativity response). We hypothesize that a dysfunctional timing/change detection network underlies the cognitive impairment observed in SZ.
Autores:
Davalos, D. (Autor de correspondencia); Mioni, G.; Grondin, S.; et al.
Revista:
FRONTIERS IN HUMAN NEUROSCIENCE
ISSN:
1662-5161
Año:
2018
Vol.:
12
Págs.:
435
Revista:
JOURNAL OF MEDICAL INTERNET RESEARCH
ISSN:
1438-8871
Año:
2018
Vol.:
20
N°:
5
Págs.:
e205
Background: The contents of traditional communication media and new internet social media reflect the interests of society. However, certain barriers and a lack of attention towards mental disorders have been previously observed.
Objective: The objective of this study is to measure the relevance of influential American mainstream media outlets for the distribution of psychiatric information and the interest generated in these topics among their Twitter followers.
Methods: We investigated tweets generated about mental health conditions and diseases among 15 mainstream general communication media outlets in the United States of America between January 2007 and December 2016. Our study strategy focused on identifying several psychiatric terms of primary interest. The number of retweets generated from the selected tweets was also investigated. As a control, we examined tweets generated about the main causes of death in the United States of America, the main chronic neurological degenerative diseases, and HIV.
Results: In total, 13,119 tweets about mental health disorders sent by the American mainstream media outlets were analyzed. The results showed a heterogeneous distribution but preferential accumulation for a select number of conditions. Suicide and gender dysphoria accounted for half of the number of tweets sent. Variability in the number of tweets related to each control disease was also found (5998). The number of tweets sent regarding each different psychiatric or organic disease analyzed was significantly correlated with the number of retweets generated by followers (1,030,974 and 424,813 responses to mental health disorders and organic diseases, respectively). However, the probability of a tweet being retweeted differed significantly among the conditions and diseases analyzed. Furthermore, the retweeted to tweet ratio was significantly higher for psychiatric diseases than for the control diseases (odds ratio 1.11, CI 1.07-1.14; P < .001).
Conclusions: American mainstream media outlets and the general public demonstrate a preferential interest for psychiatric diseases on Twitter. The heterogeneous weights given by the media outlets analyzed to the different mental health disorders and conditions are reflected in the responses of Twitter followers.
Revista:
JOURNAL OF MEDICAL INTERNET RESEARCH
ISSN:
1438-8871
Año:
2018
Vol.:
20
N°:
5
Págs.:
e205
Background: The contents of traditional communication media and new internet social media reflect the interests of society. However, certain barriers and a lack of attention towards mental disorders have been previously observed. Objective: The objective of this study is to measure the relevance of influential American mainstream media outlets for the distribution of psychiatric information and the interest generated in these topics among their Twitter followers. Methods: We investigated tweets generated about mental health conditions and diseases among 15 mainstream general communication media outlets in the United States of America between January 2007 and December 2016. Our study strategy focused on identifying several psychiatric terms of primary interest. The number of retweets generated from the selected tweets was also investigated. As a control, we examined tweets generated about the main causes of death in the United States of America, the main chronic neurological degenerative diseases, and HIV. Results: In total, 13,119 tweets about mental health disorders sent by the American mainstream media outlets were analyzed. The results showed a heterogeneous distribution but preferential accumulation for a select number of conditions. Suicide and gender dysphoria accounted for half of the number of tweets sent. Variability in the number of tweets related to each control disease was also found (5998). The number of tweets sent regarding each different psychiatric or organic disease analyzed was significantly correlated with the number of retweets generated by followers (1,030,974 and 424,813 responses to mental health disorders and organic diseases, respectively). However, the probability of a tweet being retweeted differed significantly among the conditions and diseases analyzed. Furthermore, the retweeted to tweet ratio was significantly higher for psychiatric diseases than for the control diseases (odds ratio 1.11, CI 1.07-1.14; P < .001). Conclusions: American mainstream media outlets and the general public demonstrate a preferential interest for psychiatric diseases on Twitter. The heterogeneous weights given by the media outlets analyzed to the different mental health disorders and conditions are reflected in the responses of Twitter followers.
Revista:
PSYCHIATRY RESEARCH
ISSN:
0165-1781
Año:
2017
Vol.:
247
Págs.:
214 - 221
The symptoms of schizophrenia might be mediated by a cortical network disconnection which may disrupt the cortical oscillatory activity. Steady-state responses are an easy and consistent way to explore cortical oscillatory activity. A chirp-modulated tone (increasing the frequency of the modulation in a linear manner) allows a fast measure of the steady-state response to different modulation rates. With this approach, we studied the auditory steady-state responses in two groups of patients with schizophrenia (drug-naive and treated with atypical antipsychotic drugs), in order to assess the differences in their responses with respect to healthy subjects, and study any potential effect of medication. Drug-naive patients had reduced amplitude and inter-trial phase coherence of the response in the 30-50Hz range, and reduced amplitude of the response in the 90-100Hz range, when compared to controls. In the treated patients group, the response in the 30-50Hz range was normalized to values similar to the control group, but the reduction in amplitude in the 90-100Hz range remained as in the drug-naive group. These results suggest that gamma activity impairment in schizophrenia is a complex phenomenon that affects a wide band of frequencies and may be influenced by antipsychotic treatment.
Revista:
MEDICINE (ELSEVIER)
ISSN:
0304-5412
Año:
2017
Vol.:
12
N°:
46
Págs.:
2731-2742
Revista:
SCHIZOPHRENIA RESEARCH
ISSN:
0920-9964
Año:
2017
Vol.:
188
Págs.:
21 - 32
Schizophrenia (SZ) and Bipolar Disorder (BD) are associated with deficits in both timing and cognitive control functions. However, the underlying neurological dysfunctions remain poorly understood. The main goal of this study was to identify brain structures activated both by increases in cognitive activity and during timing tasks in patients with SZ and BD relative to controls.
We conducted two signed differential mapping (SDM) meta-analyses of functional magnetic resonance imaging studies assessing the brain response to increasing levels of cognitive difficulty: one concerned SZ, and the other BD patients. We conducted a similar SDM meta-analysis on neuroimaging of timing in SZ (no studies in BD could be included). Finally, we carried out a multimodal meta-analysis to identify common brain regions in the findings of the two previous meta-analyses.
We found that SZ patients showed hypoactivation in timing-related cortical-subcortical areas. The dysfunction observed during timing partially coincided with deficits for cognitive control functions. We hypothesize that a dysfunctional temporal/cognitive control network underlies the persistent cognitive impairment observed in SZ.
Autores:
Huang, E.; Zai, C. C.; Lisoway, A.; et al.
Revista:
INTERNATIONAL JOURNAL OF NEUROPSYCHOPHARMACOLOGY
ISSN:
1461-1457
Año:
2016
Vol.:
19
N°:
5
Págs.:
132
Background: The catechol-O-methyltransferase (COMT) enzyme plays a crucial role in dopamine degradation, and the COMT Val158Met polymorphism (rs4680) is associated with significant differences in enzymatic activity and consequently dopamine concentrations in the prefrontal cortex. Multiple studies have analyzed the COMT Val158Met variant in relation to antipsychotic response. Here, we conducted a meta-analysis examining the relationship between COMT Val158Met and antipsychotic response.
Methods: Searches using PubMed, Web of Science, and PsycInfo databases (03/01/2015) yielded 23 studies investigating COMT Val158Met variation and antipsychotic response in schizophrenia and schizo-affective disorder. Responders/nonresponders were defined using each study¿s original criteria. If no binary response definition was used, authors were asked to define response according to at least 30% Positive and Negative Syndrome Scale score reduction (or equivalent in other scales). Analysis was conducted under a fixed-effects model.
Results: Ten studies met inclusion criteria for the meta-analysis. Five additional antipsychotic-treated samples were analyzed for Val158Met and response and included in the meta-analysis (ntotal=1416). Met/Met individuals were significantly more likely to respond than Val-carriers (P=.039, ORMet/Met=1.37, 95% CI: 1.02¿1.85). Met/Met patients also experienced significantly greater improvement in positive symptoms relative to Val-carriers (P=.030, SMD=0.24, 95% CI: 0.024¿0.46). Posthoc analyses on patients treated with atypical antipsychotics (n=1207) showed that Met/Met patients were significantly more likely to respond relative to Val-carriers (P=.0098, ORMet/Met=1.54, 95% CI: 1.11¿2.14), while no difference was observed for typical-antipsychotic-treated patients (n=155) (P=.65).
Conclusions: Our findings suggest that the COMT Val158Met polymorphism is associated with response to antipsychotics in schizophrenia and schizo-affective disorder patients. This effect may be more pronounced for atypical antipsychotics.
Revista:
MEDICAL HYPOTHESES
ISSN:
0306-9877
Año:
2016
Vol.:
97
Págs.:
71 - 73
Recent studies based on biography analysis provide support for the notion that the prevalence of mental illness in the creative geniuses of art, literature and science is higher than it is in more ordinary folk. However, this relationship between madness and genius, which was also addressed by the classical philosophers, has been generalized to all branches of professional endeavour. Whilst it may hold true for illustrious personalities of the fine arts, we found that the relationship proves inappropriate to the biographies of ten individuals renowned in history for their innovative contributions to medical science. Furthermore, examination of these ten biographies invites the hypothesis that certain personality traits - especially, agreeableness, conscientiousness and openness to new experience - can act to enhance creativity and protect against mental illness.
Revista:
BMC NEUROLOGY
ISSN:
1471-2377
Año:
2016
Vol.:
16
N°:
1
Págs.:
246
he HRQOLISP-40 scale is valid and reliable for assessing patients' quality of life after a stroke. Validating quality of life assessment instruments is necessary in order to improve the effectiveness of rehabilitation programs for Colombian stroke patients.
Revista:
FRONTIERS IN PSYCHOLOGY
ISSN:
1664-1078
Año:
2016
Vol.:
7
N°:
192
Timing and other cognitive processes demanding cognitive control become interlinked when there is an increase in the level of difficulty or effort required. Both functions are interrelated and share neuroanatomical bases. A previous meta-analysis of neuroimaging studies found that people with schizophrenia had significantly lower activation, relative to normal controls, of most right hemisphere regions of the time circuit. This finding suggests that a pattern of disconnectivity of this circuit, particularly in the supplementary motor area, is a trait of this mental disease. We hypothesize that a dysfunctional temporal/cognitive control network underlies both cognitive and psychiatric symptoms of schizophrenia and that timing dysfunction is at the root of the cognitive deficits observed. The goal of our study was to look, in schizophrenia patients, for brain structures activated both by execution of cognitive tasks requiring increased effort and by performance of time perception tasks. We conducted a signed differential mapping (SDM) meta-analysis of functional neuroimaging studies in schizophrenia patients assessing the brain response to increasing levels of cognitive difficulty. Then, we performed a multimodal meta-analysis to identify common brain regions in the findings of that SDM meta-analysis and our previously-published activation likelihood estimate (ALE) meta-analysis of neuroimaging of time perception in schizophrenia patients. The current study supports the hypothe
Revista:
PROGRESS IN NEURO-PSYCHOPHARMACOLOGY AND BIOLOGICAL PSYCHIATRY
ISSN:
0278-5846
Año:
2016
Vol.:
71
N°:
3
Págs.:
176 - 182
Context processing deficits have been shown to be present in chronic and first episode schizophrenia patients and in their relatives. This cognitive process is linked to frontal functioning and is highly dependent on dopamine levels in the prefrontal cortex (PFC). The catechol-O-methyltransferase (COMT) enzyme plays a prominent role in regulating dopamine levels in PFC. Genotypic variations in the functional polymorphism Val158Met COMT appear to have an impact in dopamine signaling in the PFC of healthy subjects and schizophrenia patients. We aimed to explore the effect of the Val158Met COMT polymorphism on brain activation during the performance of a context processing task in healthy subjects, schizophrenia spectrum patients and their healthy relatives. Methods: 56 participants performed the Dot Probe Expectancy task (DPX) during the fMRI session. Subjects were genotyped and only the Val and Met homozygotes participated in the study. Results: Schizophrenia spectrum patients and their relatives showed worse performance on context processing measures than healthy control subjects. The Val allele was associated with more context processing errors in healthy controls and in relatives compared to patients. There was a greater recruitment of frontal areas (supplementary motor area/cingulate gyrus) during context processing in patients relative to healthy controls. Met homozygotes subjects activated more frontal areas than Val homozygotes subjects. Conclusions: The Val158Met COMT polymorphism influences context processing and on its underlying brain activation, showing less recruitment of frontal areas in the subjects with the genotype associated to lower dopamine availability in PFC.
Revista:
MEDICINE (ELSEVIER)
ISSN:
0304-5412
Año:
2016
Vol.:
12
N°:
23
Págs.:
1359-68
El tratamiento más completo y eficaz incluye medidas higiénicas combinadas con tratamientos
farmacológicos y psicoterapéuticos. Los fármacos más empleados en el tratamiento del insomnio
son las benzodiacepinas y los fármacos agonistas del receptor de benzodiacepinas no benzodiacepí-
nicos. Entre los tratamientos psicoterapéuticos destaca la terapia cognitivo conductual, la terapia de
control de estímulos, la terapia de restricción del sueño y las terapias de relajación
Revista:
REVISTA DE LA FACULTAD DE MEDICINA - UNIVERSIDAD NACIONAL DE COLOMBIA
ISSN:
0120-0011
Año:
2015
Vol.:
63
N°:
4
Págs.:
583 - 593
Antecedentes. La medición de calidad de vida en pacientes con accidente cerebrovascular es importante, ya que puede orientar el manejo de los procesos de rehabilitación. En Colombia no existen instrumentos de medición de calidad de vida validados para pacientes con este tipo de afección.
Objetivo. Realizar la adaptación transcultural de la escala Health-Related Quality of Life In Stroke Patients HRQOLISP-40 para su uso en Colombia.
Materiales y métodos. Se siguieron las recomendaciones metodológicas del grupo de calidad de vida EORTC: traducción inicial, traducción inversa y estudio piloto.
Resultados. Las traducciones directas fueron similares en 24/40 ítems; en 12 ítems hubo variaciones en redacción sin cambio de palabras; en las instrucciones, una opción de respuesta y en 4 ítems se requirió escoger la mejor opción de traducción de una palabra. Las traducciones inversas fueron similares entre sí y a la versión original de la escala. Por otra parte, en la prueba piloto se observó cierta dificultad de comprensión en 3 ítems, se adoptaron las sugerencias del autor respecto a las inquietudes de los pacientes, no hubo dificultades por molestia ni se sugirió un nuevo parafraseo.
Conclusión. Al terminar esta fase se cuenta con la versión en español (de Colombia) de la escala HRQOLISP-40 para ser sometida a una validación previa a su uso en la evaluación de calidad de vida en pacientes con accidente cerebrovascular.
Revista:
SCHIZOPHRENIA RESEARCH: COGNITION
ISSN:
2215-0013
Año:
2015
Vol.:
2
N°:
15
Págs.:
210 - 213
Esta revisión pretende mostrar al lector los principales hallazgos de la literatura neurocientífica y cognitiva sobre la temporalidad en la esquizofrenia. Realizaremos primero una breve introducción sobre aspectos teóricos y conceptuales para adentrarnos luego en la importancia de su alteración en este trastorno. Concretamente, las estructuras cerebrales subyacentes y la interacción que guarda con otras disfunciones cognitivas y síntomas psicopatológicos. Incluye diferentes estudios con un enfoque tanto conductual como neurocientífico, aunque especialmente se centra en las tareas de discriminación temporal en la escala de milisegundos y en los estudios que emplean técnicas de neuroimagen funcional.
Revista:
CUADERNOS DE MEDICINA PSICOSOMATICA Y PSIQUIATRIA DE ENLACE
ISSN:
1695-4246
Año:
2015
N°:
115
Págs.:
7 - 10
Revista:
THE OPEN NEUROIMAGING JOURNAL
ISSN:
1874-4400
Año:
2014
Vol.:
8
Págs.:
1 - 4
We describe a case of delusional psychosis that was terminated by neurosurgical removal of a large arachnoid cyst. The patient was suffering his first psychotic episode and had symptoms typical of schizophrenia.
The case underscores the importance of considering that an arachnoid cyst can induce psychopathological symptoms, even those of schizophrenia. Indeed, such symptoms may be the cyst's only clinical manifestation.
In addition, the case highlights the importance of doing a structural imaging test when confronted with a first episode of psychosis, especially if the episode is relatively late in appearance. Such imaging may lead to a diagnosis that in turn can enable a definitive neurosurgical resolution of the psychosis.
Revista:
MEDICAL HYPOTHESES
ISSN:
0306-9877
Año:
2014
Vol.:
83
N°:
4
Págs.:
509 - 510
Revista:
NEUROPSYCHOLOGIA
ISSN:
0028-3932
Año:
2014
Vol.:
58
Págs.:
14 - 22
Objectives: We hypothesize that time perception and executive functions are interrelated and share neuroanatomical basis, and that fluctuations in levels of cognitive effort play a role in mediating that relation. The main goal of this study was to identify brain structures activated both by increases in cognitive activity and during time perception tasks.
Methods: We performed a multimodal meta-analysis to identify common brain regions in the findings of (a) an SDM meta-analysis of neuroimaging studies assessing the brain response to increasing levels of cognitive difficulty, and (b) an ALE meta-analysis on neuroimaging of time perception (Ortuño, Guillén-Grima, López-García, Gómez, & Pla, 2011).
Results and Conclusions: Consistent with results of previous, separate meta-analyses, the current study supports the hypothesis that there exists a group of brain regions engaged both in time perception tasks and during tasks requiring cognitive effort. Thus, brain regions associated with working memory and executive functions were found to be engaged during time estimation tasks, and regions associated with time perception were found to be engaged by an increase in the difficulty of non-temporal tasks. The implication is that temporal perception and cognitive processes demanding cognitive control become interlinked when there is an increase in the level of cognitive effort demanded.
Revista:
PSYCHIATRY RESEARCH
ISSN:
0165-1781
Año:
2013
Vol.:
208
N°:
2
Págs.:
118 - 124
Cognitive impairment in schizophrenia is a core feature and seems to be related mainly to dopaminergic dysfunction in the prefrontal cortex (PFC). The functional polymorphism Val158Met of the COMT (catechol-. O-methyltransferase) gene could mediate the relationship between cognition and dopamine activity in PFC. The present study tested the influence of this polymorphism on the cognitive performance of schizophrenia spectrum patients and their relatives, using some subtests of the neuropsychological battery, the Measurement and Treatment Research to Improve Cognition in Schizophrenia (MATRICS) Consensus Cognitive Battery, and evaluated the impact of this polymorphism on a specific prefrontal cognitive function using a cognitive neuroscience paradigm. A Group of 74 schizophrenia spectrum disorder patients, 48 relatives and 67 controls performed some subtests of the MATRICS Consensus Cognitive Battery. In addition, 40 schizophrenia spectrum disorder patients, 26 relatives and 63 controls performed the Dot Pattern Expectancy Task (DPX) to study context processing. For the neuropsychological battery, no differences in any of the cognitive domains were found according to genotype. The DPX task was sensitive to genotype effects in patients as well as in relatives. Context processing deficits in schizophrenia patients and their relatives may be mediated by COMT genotype. The influence of the COMT genotype on cognition is more relevant in specific cognitive tasks related to prefrontal function. These results should be replicated in larger samples.
Revista:
JOURNAL OF AFFECTIVE DISORDERS
ISSN:
0165-0327
Año:
2012
Vol.:
138
N°:
3
Págs.:
479-484
Background: As marker genes for bipolar disorder (BP) and attention deficit hyperactivity disorder (ADHD) are not fully identified, we carried out a complete genome analysis to search for genes differentially expressed in ADHD and BP. Materials and methods: We recruited 39 patients (30 ADHD, 9 BP), aged 7 to 23 years. For evaluation of the psychiatric diagnosis, we used a semi-structured interview based on the K-SADS-PL (DSM-IV). RNA was extracted from peripheral blood and analyzed with the GeneChip (R) Human Genome U133-Plus 2.0 (Affymetrix). For the validation of differentially expressed genes, real-time PCR was used. Results: Hybridization and subsequent statistical analysis found 502 probe-sets with significant differences in expression in ADHD and BP patients. Of these, 82 had highly significant differences. Neuregulin (NRG1), cathepsins B and D (CTSB, CTSD) and prostaglandin-D2-synthase (FTGDS) were chosen for semi-quantitative mRNA determination. The expression of PTGDS was statistically increased in ADHD relative to BP patients (p = 0.01). We found no such differential expression with NRG1, CTSB and CTSD genes (p > 0.05). Conclusions: The gene coding for FTGDS was found to be more expressed in patients with ADHD relative to patients with BP, indicating a possible link with the differential etiology of ADHD. The experimental approach we have used is, at least in part, validated by the detection of proteins directly concerned with brain functions, and shows a possible way forward for studies of the connection between brain function genes and psychiatric disorders. Limitations: Confirmation of our findings requires a larger sample of patients with clearly-defined phenotypes. (C) 2012 Elsevier B.V. All rights reserved.
Revista:
PSYCHIATRY RESEARCH-NEUROIMAGING
ISSN:
0925-4927
Año:
2011
Vol.:
191
N°:
3
Págs.:
166-173
Both schizophrenia and bipolar disorder have been associated with progressive changes in grey matter (GM) volume. However, the temporal trajectories of these changes are poorly understood. The aim of this study was to assess longitudinal changes in grey matter volume subsequent to the first episode of schizophrenia and of affective psychoses. Adolescent patients with a first episode psychosis (n=26) were scanned twice using magnetic resonance imaging, at first presentation and after a 3-year follow-up period. An age-matched group of healthy volunteers (n=17) was scanned at the same time points. Within-group and between-group changes in regional grey matter volume were examined using voxel-based morphometry. There were significant group by time interactions (p(FDRcorr)<0.05) in the frontal, temporal, parietal, cerebellar cortex, and in the thalamus, mainly reflecting longitudinal reductions in the controls but not in the patients. Subdivision of the patient group revealed that there were similar longitudinal reductions in patients with affective psychoses as in the controls but no volumetric changes in patients with schizophrenia. Psychosis with onset in adolescence or early adulthood may be associated with a delay or a loss of longitudinal reductions in regional grey matter volume that normally occur at this stage of development. These changes may be specific to schizophrenia.
Revista:
BIPOLAR DISORDERS
ISSN:
1398-5647
Año:
2011
Vol.:
13
N°:
5-6
Págs.:
545-555
Volumetric brain abnormalities are evident in young adults presenting with a first episode of both affective psychoses and schizophrenia, but there are also significant differences between these two patient groups. Clinical outcome after the first episode may be related to the severity of volumetric abnormalities at presentation.