Efectividad del trabajo de doble tarea cognitivo-motora con incorporación de realidad virtual para el tratamiento del equilibrio en pacientes con Traumatismo Craneoencefálico.

Pregunta de revisión: ¿El tratamiento de doble tarea con la incorporación del sistema de realidad virtual BioTrack favorece el equilibrio en los pacientes que han sufrido un traumatismo craneoencefálico? Objetivo: Determinar si el trabajo de doble tarea cognitivo-motor con la incorporación de realidad virtual favorece el equilibrio de los pacientes con traumatismo craneoencefálico. Metodología: se realizará un diseño de tipo experimental, aleatorio controlado y prospectivo. Se planteará un proyecto de 36 sesiones dividido en seis meses basado en trabajo de doble tarea cognitivo-motor con realidad virtual. Consta de un tratamiento combinado de ejercicios para el equilibrio con el soporte de realidad virtual BioTrack. Al mismo tiempo se trabajará la memoria y la atención para el trabajo cognitivo. Se compara con el grupo control que solo realiza ejercicios con BioTrack. La medida principal es el equilibrio medido con la berg balance scale y la influencia del trabajo cognitivo.

Inventario de fichas de operaciones estadísticas

Se ha propuesto al IBESTAT un proyecto global basado en la implantación de un sistema de gestión mediante un desarrollo a medida para el tratamiento, la gestión, el control y la difusión de las actividades estadísticas que se llevan a cabo en la comunidad autónoma por parte de los diferentes organismos públicos, enmarcadas en el programa anual y en el plan estadístico que oficializan dichos datos, basado en las reuniones mantenidas y en la información a la que ha tenido acceso. El alcance contempla tanto la definición de la arquitectura necesaria de la plataforma, como el desarrollo y la puesta en producción. El proyecto permitirá al IBESTAT disponer de una aplicación web desarrollada mediante una tecnología integrada con el resto de la informática del gobierno de las Islas Baleares y en especial con lo referente a la nueva estrategia de desarrollo de servicios web y de aplicación telemática enmarcada en la Ley 11/2007 de acceso de los ciudadanos a la administración digital por medios telemáticos.

Evolució d'entorn web relatiu a la vigilància epidemiològica de l'Agència de Salut Pública de Barcelona (ASPB)

Aquest projecte té per objecte explorar les possibilitats dels sistemes d'informació geogràfica en els estudis de vigilància epidemiològica. Per a tal fi es va partir d'una aplicació web evolucionada en projectes anteriors i basada en un entorn de programari lliure per tal d'ampliar el tractament d'altres malalties i el ventall de funcionalitats disponibles per al seu tractament.

Tindrà utilitat el genoma humà? Fa poc s'han complert deu anys de l'anunci de l'esborrany del genoma

Durant aquell anunci, l'aleshores president dels Estats Units, Bill Clinton, va dir que 'revolucionaria el diagnostic, la prevenció i el tractament de la major part de malalties'.

La pisa de Barcelona: una aproximació arqueomètrica al seu estudi

El coneixement que es té avui dia de la pisa barcelonina, quant a produccions, formes, decoracions, etc., ha avançat de manera significativa, però resten per resoldre qüestions relacionades amb la tecnologia de producció, l"evolució d"aquesta tecnologia, l"aprovisionament i el tractament de les matèries primeres o les diferències de qualitats entre els diversos tallers existents a la ciutat de Barcelona. Per aquest motiu, s"ha iniciat un programa de caracterització arqueomètrica de la pisa de Barcelona, del qual aquest treball presenta uns primers resultats.

Diagnosis of Alzheimer’s Disease from EEG by Means of Synchrony Measures in Optimized Frequency Bands

Several clinical studies have reported that EEG synchrony is affected by Alzheimer’s disease (AD). In this paper a frequency band analysis of AD EEG signals is presented, with the aim of improving the diagnosis of AD using EEG signals. In this paper, multiple synchrony measures are assessed through statistical tests (Mann–Whitney U test), including correlation, phase synchrony and Granger causality measures. Moreover, linear discriminant analysis (LDA) is conducted with those synchrony measures as features. For the data set at hand, the frequency range (5-6Hz) yields the best accuracy for diagnosing AD, which lies within the classical theta band (4-8Hz). The corresponding classification error is 4.88% for directed transfer function (DTF) Granger causality measure. Interestingly, results show that EEG of AD patients is more synchronous than in healthy subjects within the optimized range 5-6Hz, which is in sharp contrast with the loss of synchrony in AD EEG reported in many earlier studies. This new finding may provide new insights about the neurophysiology of AD. Additional testing on larger AD datasets is required to verify the effectiveness of the proposed approach.

Effect of Maraviroc Intensification on HIV-1-Specific T Cell Immunity in Recently HIV-1-Infected Individuals

Background The effect of maraviroc on the maintenance and the function of HIV-1-specific T cell responses remains unknown. Methods Subjects recently infected with HIV-1 were randomized to receive anti-retroviral treatment with or without maraviroc intensification for 48 weeks, and were monitored up to week 60. PBMC and in vitro-expanded T cells were tested for responses to the entire HIV proteome by ELISpot analyses. Intracellular cytokine staining assays were conducted to monitor the (poly)-functionality of HIV-1-specific T cells. Analyses were performed at baseline and week 24 after treatment start, and at week 60 (3 months after maraviroc discontinuation). Results Maraviroc intensification was associated with a slower decay of virus-specific T cell responses over time compared to the non-intensified regimen in both direct ex-vivo as well as in in-vitro expanded cells. The effector function profiles of virus-specific CD8+ T cells were indistinguishable between the two arms and did not change over time between the groups. Conclusions Maraviroc did not negatively impact any of the measured parameters, but was rather associated with a prolonged maintenance of HIV-1-specific T cell responses. Maraviroc, in addition to its original effect as viral entry inhibitor, may provide an additional benefit on the maintenance of virus-specific T cells which may be especially important for future viral eradication strategies.

Efectividad de la intervención psicosocial en pacientes con enfermedad avanzada y final de vida

Objetivos: Demostrar la efectividad de la intervención psicosocial en la atención integral a personas con enfermedades avanzadas. Método: Se ha evaluado la presencia y evolución de parámetros psicológicos y espirituales de 8.964 pacientes, visitados por 117 profesionales de 29 equipos en un estudio de diseño cuasi-experimental, prospectivo, multcéntrico de un solo grupo pre-test post-test. Resultados: Los resultados muestran mejoras significativas en parámetros como ansiedad (RL 657,64; p<0,001), malestar emociona (RL 757,44; p<0,001), sentido de la vida (RL 248,30; p<0,001) y sentimientos de paz y perdón (RL 190,94; p<0,001). Conclusiones: El efecto positivo de la intervención psicosocial en la reducción de los parámetros psicológicos y espirituales evaluados sugiere que esta es eficaz en el contexto de la atención a personas con enfermedades avanzadas.

Anti-MPER antibodies with heterogeneous neutralization capacity are detectable in most untreated HIV-1 infected individuals

Background The MPER region of the HIV-1 envelope glycoprotein gp41 is targeted by broadly neutralizing antibodies. However, the localization of this epitope in a hydrophobic environment seems to hamper the elicitation of these antibodies in HIV infected individuals. We have quantified and characterized anti-MPER antibodies by ELISA and by flow cytometry using a collection of mini gp41-derived proteins expressed on the surface of 293T cells. Longitudinal plasma samples from 35 HIV-1 infected individuals were assayed for MPER recognition and MPER-dependent neutralizing capacity using HIV-2 viruses engrafted with HIV-1 MPER sequences. Results Miniproteins devoid of the cysteine loop of gp41 exposed the MPER on 293T cell membrane. Anti-MPER antibodies were identified in most individuals and were stable when analyzed in longitudinal samples. The magnitude of the responses was strongly correlated with the global response to the HIV-1 envelope glycoprotein, suggesting no specific limitation for anti-MPER antibodies. Peptide mapping showed poor recognition of the C-terminal MPER moiety and a wide presence of antibodies against the 2F5 epitope. However, antibody titers failed to correlate with 2F5-blocking activity and, more importantly, with the specific neutralization of HIV-2 chimeric viruses bearing the HIV-1 MPER sequence; suggesting a strong functional heterogeneity in anti-MPER humoral responses. Conclusions Anti-MPER antibodies can be detected in the vast majority of HIV-1 infected individuals and are generated in the context of the global anti-Env response. However, the neutralizing capacity is heterogeneous suggesting that eliciting neutralizing anti-MPER antibodies by immunization might require refinement of immunogens to skip nonneutralizing responses.

Prevalence of Ischemic Heart Disease and Management of Coronary Risk in Daily Clinical Practice: Results from a Mediterranean Cohort of HIV-Infected Patients

There are conflicting data on the prevalence of coronary events and the quality of the management of modifiable cardiovascular risk factors (CVRF) inHIV-infected patients. Methods.We performed a retrospective descriptive study to determine the prevalence of coronary events and to evaluate the management of CVRF in a Mediterranean cohort of 3760 HIV-1-infected patients from April 1983 through June 2011. Results.We identified 81 patients with a history of a coronary event (prevalence 2.15%); 83% of them suffered an acute myocardial infarction. At the time of the coronary event, CVRF were highly prevalent (60.5% hypertension, 48% dyslipidemia, and 16% diabetes mellitus).OtherCVRF, such as smoking, hypertension, lack of exercise, and body mass index, were not routinely assessed. After the coronary event, a significant decrease in total cholesterol ( � = 0.025) and LDLcholesterol ( � = 0.004) was observed. However, the percentage of patients whomaintained LDL-cholesterol > 100mg/dL remained stable (from 46% to 41%, � = 0.103). Patients using protease inhibitors associated with a favorable lipid profile increased over time ( � = 0.028). Conclusions.The prevalence of coronary events in our cohort is low. CVRF prevalence is high and theirmanagement is far from optimal. More aggressive interventions should be implemented to diminish cardiovascular risk in HIV-infected patients.

Blind Inversion of Wiener System using a minimization-projection (MP) approach

In this paper, a new algorithm for blind inversion of Wiener systems is presented. The algorithm is based on minimization of mutual information of the output samples. This minimization is done through a Minimization-Projection (MP) approach, using a nonparametric “gradient” of mutual information.

A Gradient based algorithm for blind inversion of Wiener System using multi-variate score functions

A Wiener system is a linear time-invariant filter, followed by an invertible nonlinear distortion. Assuming that the input signal is an independent and identically distributed (iid) sequence, we propose an algorithm for estimating the input signal only by observing the output of the Wiener system. The algorithm is based on minimizing the mutual information of the output samples, by means of a steepest descent gradient approach.

Improving algorithm speed in PNL mixture separation and Wiener system inversion

This paper proposes a very simple method for increasing the algorithm speed for separating sources from PNL mixtures or invertingWiener systems. The method is based on a pertinent initialization of the inverse system, whose computational cost is very low. The nonlinear part is roughly approximated by pushing the observations to be Gaussian; this method provides a surprisingly good approximation even when the basic assumption is not fully satisfied. The linear part is initialized so that outputs are decorrelated. Experiments shows the impressive speed improvement.

EEG Windowed statitical wavelet deviation for estimation of muscular artifacts

Electroencephalographic (EEG) recordings are, most of the times, corrupted by spurious artifacts, which should be rejected or cleaned by the practitioner. As human scalp EEG screening is error-prone, automatic artifact detection is an issue of capital importance, to ensure objective and reliable results. In this paper we propose a new approach for discrimination of muscular activity in the human scalp quantitative EEG (QEEG), based on the time-frequency shape analysis. The impact of the muscular activity on the EEG can be evaluated from this methodology. We present an application of this scoring as a preprocessing step for EEG signal analysis, in order to evaluate the amount of muscular activity for two set of EEG recordings for dementia patients with early stage of Alzheimer’s disease and control age-matched subjects.

ICA as a preprocessing technique for classification

In this paper we propose the use of the independent component analysis (ICA) [1] technique for improving the classification rate of decision trees and multilayer perceptrons [2], [3]. The use of an ICA for the preprocessing stage, makes the structure of both classifiers simpler, and therefore improves the generalization properties. The hypothesis behind the proposed preprocessing is that an ICA analysis will transform the feature space into a space where the components are independent, and aligned to the axes and therefore will be more adapted to the way that a decision tree is constructed. Also the inference of the weights of a multilayer perceptron will be much easier because the gradient search in the weight space will follow independent trajectories. The result is that classifiers are less complex and on some databases the error rate is lower. This idea is also applicable to regression