INFO6003: Network revision

Notes on revision topics for TJC's network and campus security lectures.

Estudio de asociación entre genotipo de DAT1 y transtorno por déficit de atención / hiperactividad

Introducción: El TDAH tiene un componente genético importante; el gen de transportador de Dopamina (DAT1) se ha asociado con susceptibilidad al TDAH y con sus endofenotipos. El VNTR de 40pb en la región 3’UTR aumenta la expresión del DAT1. En Colombia no hay ningún estudio previo que indique evidencia de la asociación genética entre TDAH y el gen DAT1. Objetivo: Determinar asociación entre el VNTR del DAT1 y el fenotipo y/o endofenotipos del TDAH. Métodos: Se seleccionaron 73 pacientes con TDAH y 75 controles, se valoró en los casos inteligencia y funciones ejecutivas. Mediante (PCR) se amplificó el VNTR DAT1. Se establecieron estadísticos genético poblacionales, análisis de asociación y de regresión logística entre las pruebas neuropsicológicas y genotipo. Resultado: El polimorfismo del DAT1 no mostró asociación con TDAH, ni con alteraciones en las funciones ejecutivas. El genotipo 10/10 del VNTR DAT1 se encontró asociado con el índice de velocidad de procesamiento (p <0,05). En el subgrupo hiperactividad hubo asociación con algunas subpruebas de flexibilidad cognitiva, número de respuestas correctas, total de errores, número de respuestas perseverativas (p ≤ 0.01). En el subgrupo mixto se asoció con índice de comprensión verbal (p <0,05). Conclusiones: No hubo asociación entre el polimorfismo VNTR (DAT1) y el fenotipo de TDAH. Se encontraron asociaciones entre genotipo y algunos test de flexibilidad cognitiva e índice de comprensión verbal. Se establecieron los estadísticos genético poblacionales de este polimorfismo para la población analizada, el cual corresponde al primer reporte de una muestra de nuestro país.

COMP1214 Revision - 2014

Based on the topics requested by the 2013-14 class.

COMP1205 Revision Lecture

Lecture Slides

Efectividad del tratamiento con neurofeedback en trastornos del estado del ánimo, ansiedad y fibromialgia: una revisión de literatura

El neurofeedback es una técnica no invasiva en la que se pretende corregir, mediante condicionamiento operante, ondas cerebrales que se encuentren alteradas en el electroencefalograma. Desde 1967, se han conducido numerosas investigaciones relacionadas con los efectos de la técnica en el tratamiento de alteraciones psicológicas. Sin embargo, a la fecha no existen revisiones sistemáticas que reúnan los temas que serán aquí tratados. El aporte de este trabajo es la revisión de 56 artículos, publicados entre los años 1995 y 2013 y la evaluación metodológica de 29 estudios incluidos en la revisión. La búsqueda fue acotada a la efectividad del neurofeedback en el tratamiento de depresión, ansiedad, trastorno obsesivo compulsivo (TOC), ira y fibromialgia. Los hallazgos demuestran que el neurofeedback ha tenido resultados positivos en el tratamiento de estos trastornos, sin embargo, es una técnica que aún está en desarrollo, con unas bases teóricas no muy bien establecidas y cuyos resultados necesitan de diseños metodológicamente más sólidos que ratifiquen su validez.

Grados altos en la Escala de Fisher predicen el desarrollo de hidrocefalia en pacientes con hemorragia subaracnoidea espontanea

Objetive. To determine if high grades of Fisher scale are useful to predict the development of hydrocephalus in consecutive Colombian patients with spontaneous subarachnoid hemorrhage (SAH) assessed from January 2005 to April 2012 with 12 month follow-up. Methods. 251 patients were included in a restrospective manner. The association between Fisher scale and hydrocephalus was analyzed bivariate and multivariate analysis. In addition, a systematic literature review (SLR) was done. Results. In our cohort of patients, the etiology of SAH was due to aneurysms; 78,5%. The prevalence of hydrocephalus was found to be of 27,1%. Overall survival with a 12 month follow-up was of 65,7%. Average age of included patients was 55,5 ± 15 years, and most of them were women; 65,7%. Having Fisher 4 and Hunt-Hess III are significantly associated with hydrocephalus: adjusted OR: 2.93 95% CI: 1.51-5.65, P <0.001, adjusted OR: 2.83 95% CI: 1.31-6.17 P=0.008 respectively. The SRL showed an overall prevalence of hydrocephalus between 17 and 68% and mortality varied between 3.0% and 33%. 50% of the included studies significantly associated intraventricular hemorrhage ( Fisher 4) with hydrocephalus. Conclusion. Our results confirm current concepts on post-SAH hydrocephalus and the fact that is obstructive and secondary to Fisher 4 and having neurological impairment on admission (Hunt and Hess III).

Technical report revision lecture

Specification for technical report, allocations (2015) mark scheme are at http://www.edshare.soton.ac.uk/14582 A template for a technical report and other support materials are found at http://www.edshare.soton.ac.uk/14581

Systematic Storytelling: Interactivity, Agency and Non-linear Narratives

In this lecture we go over the fundamentals of interactive game narratives. Defining what we mean by narrative, and placing games in context with other ergodic literature. We look at non-linear structures, agency, and the narrative paradox. Concluding with a set of mechanisms that games designers use to manage agency in their narrative games.

Cardiovascular disease in latin american patients with systemic lupus erythematosus: a cross-sectional study and a systematic review

Objective. This study was performed to determine the prevalence of and associated risk factors for cardiovascular disease (CVD) in Latin American (LA) patients with systemic lupus erythematosus (SLE). Methods. First, a cross-sectional analytical study was conducted in 310 Colombian patients with SLE in whom CVD was assessed. Associated factors were examined by multivariate regression analyses. Second, a systematic review of the literature on CVD in SLE in LA was performed. Results. There were 133 (36.5%) Colombian SLE patients with CVD. Dyslipidemia, smoking, coffee consumption, and pleural effusion were positively associated with CVD. An independent effect of coffee consumption and cigarette on CVD was found regardless of gender and duration of disease. In the systematic review, 60 articles fulfilling the eligibility criteria were included. A wide range of CVD prevalence was found (4%–79.5%). Several studies reported ancestry, genetic factors, and polyautoimmunity as novel risk factors for such a condition.Conclusions. A high rate of CVD is observed in LA patients with SLE. Awareness of the observed risk factors should encourage preventive population strategies for CVD in patients with SLE aimed at facilitating the suppression of cigarette smoking and coffee consumption as well as at the tight control of dyslipidemia and other modifiable risk factors.

Organic solvents as risk factor for autoimmune diseases: a systematic review and meta-analysis

Background: Genetic and epigenetic factors interacting with the environment over time are the main causes of complex diseases such as autoimmune diseases (ADs). Among the environmental factors are organic solvents (OSs), which are chemical compounds used routinely in commercial industries. Since controversy exists over whether ADs are caused by OSs, a systematic review and meta-analysis were performed to assess the association between OSs and ADs. Methods and Findings: The systematic search was done in the PubMed, SCOPUS, SciELO and LILACS databases up to February 2012. Any type of study that used accepted classification criteria for ADs and had information about exposure to OSs was selected. Out of a total of 103 articles retrieved, 33 were finally included in the meta-analysis. The final odds ratios (ORs) and 95% confidence intervals (CIs) were obtained by the random effect model. A sensitivity analysis confirmed results were not sensitive to restrictions on the data included. Publication bias was trivial. Exposure to OSs was associated to systemic sclerosis, primary systemic vasculitis and multiple sclerosis individually and also to all the ADs evaluated and taken together as a single trait (OR: 1.54; 95% CI: 1.25-1.92; p-value, 0.001). Conclusion: Exposure to OSs is a risk factor for developing ADs. As a corollary, individuals with non-modifiable risk factors (i.e., familial autoimmunity or carrying genetic factors) should avoid any exposure to OSs in order to avoid increasing their risk of ADs.

How do autoimmune diseases cluster in families? A systematic review and meta-analysis

Background: A primary characteristic of complex genetic diseases is that affected individuals tend to cluster in families (that is, familial aggregation). Aggregation of the same autoimmune condition, also referred to as familial autoimmune disease, has been extensively evaluated. However, aggregation of diverse autoimmune diseases, also known as familial autoimmunity, has been overlooked. Therefore, a systematic review and meta-analysis were performed aimed at gathering evidence about this topic. Methods: Familial autoimmunity was investigated in five major autoimmune diseases, namely, rheumatoid arthritis, systemic lupus erythematosus, autoimmune thyroid disease, multiple sclerosis and type 1 diabetes mellitus. Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines were followed. Articles were searched in Pubmed and Embase databases. Results: Out of a total of 61 articles, 44 were selected for final analysis. Familial autoimmunity was found in all the autoimmune diseases investigated. Aggregation of autoimmune thyroid disease, followed by systemic lupus erythematosus and rheumatoid arthritis, was the most encountered. Conclusions: Familial autoimmunity is a frequently seen condition. Further study of familial autoimmunity will help to decipher the common mechanisms of autoimmunity.

Impacto de la vacuna del virus del papiloma humano en mujeres en edad fértil: revisión sistemática de literatura

Introducción. Con la creación de la vacuna contra el virus de papiloma humano en los años ochentas, se ha promovido su aplicación de manera sistemática para evitar el cáncer cervical, que es la segunda causa de mortalidad por cáncer en mujeres en edad fértil. Actualmente se desconoce el impacto de los resultados de su aplicación. Se pretendió evaluar la mejor evidencia relacionada con los resultados de la vacuna contra VPH en mujeres en edad fértil. Metodología Se realizó una revisión sistemática de literatura incluyendo los artículos con mejor evidencia en los últimos cinco años. Los términos mesH incluyeron HPV vaccine, women, efficacy entre otros. Todos los artículos fueron clasificados por evidencia antes de ser analizados. Resultados Se encontraron un total de 557 artículos relacionados con el tema de los cuales 21 cumplieron criterios para su selección. La mayoría de artículos fueron clasificados como evidencia II. Las causas más frecuentes de exclusión fueron por tema no acorde y título. Discusión Los resultados de la revisión sistemática permiten definir que la eficacia de la vacuna contra VPH, tanto y la vacuna bivalente como y la cuadrivalente supera el 97% cuando se completan tres dosis. No hay reportes de eventos adversos graves, la edad de aplicación ideal es entre 9-14 años de edad.

A diabetes mellitus causa deterioro cognitivo em idosos? Um estudo de revisão

A Diabetes Mellitus (DM) refere-se a uma síndrome metabólica, com prejuízos físicos, sociais e psicológicos naqueles que a possuem. A doença tem um forte componente genético, e é subdividida em Diabetes Mellitus Tipo 1 (DM1), e Diabetes Mellitus Tipo 2 (DM2). A DM2 está associada a déficits funcionais e também cognitivos. Pesquisas revelam que as funções executivas dos idosos com DM encontram-se mais prejudicadas do que naqueles sem DM. Com o objetivo de aprofundar esta temática, esse estudo realiza uma revisão sistemática da literatura, através de publicações indexadas nos últimos oito anos, que abordam a relação entre DM2 e aspectos do deterioro cognitivo em idosos (flexibilidade cognitiva, flexibilidade mental e do pensamento e funções executivas). Nos estudos revisados, a maioria mostrou um grau de comprometimento relacionado com as funções cognitivas: flexibilidade do pensamento, atenção, memória de trabalho, sugerindo, inclusive, que a DM2 acelera o processo de deterioro, aumentando a possibilidade de desenvolvimento de demência. A prevalência de depressão é mais elevada em idosos com DM2, com comprometimento em muitas funções, além de outras complicações físicas identificadas. Os achados apontam para funcionamento cognitivo prejudicado em idosos com DM2, o que enfatiza a necessidade de desenvolvimento de programas de prevenção e intervenção.

Autobiographical Memory for Stressful Events, Traumatic Memory and Posttraumatic Stress Disorder: A Systematic Review

Stressors and traumatic events may contribute to the development of many psychopathologies, PTSD among them. People with this disorder can present significant cognitive impairments and losses in memory, particularly autobiographical memory (AM).This paper aims to present a systematic review of literature considering changes on autobiographical memory in people exposed to potentially traumatic stressors. Therefore, we performed a computerized search in databases PsycINFO, PubMed, Web of Science and Pilots in March 2012.A total of 29 articles were selected and grouped into three categories: studies comparing Trauma X PTSD, studies comparing PTSD X Trauma X Control and comparison studies according to post-traumatic symptoms. Results demonstrate that people with PTSD presents alterations in a larger number of AM components compared to the cases in which PTSD did not developed. In the same way, subjects never exposed to trauma did not demonstrate significant alterations on  AM when compared to the other groups. The results of this study allowed concluding that changes of some components of the AM are primarily associated with PTSD, but it was not possible to clarify whether such changes are related to the timely development of the disorder, or if they are also observed in traumatic memories even in the absence of disorder.