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Inicio Revista Colombiana de Psiquiatría Asociación de esquizofrenia y sus dimensiones clínicas con el gen NOS1AP en po...
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Vol. 41. Issue 2.
Pages 249-272 (June 2012)
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Vol. 41. Issue 2.
Pages 249-272 (June 2012)
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Asociación de esquizofrenia y sus dimensiones clínicas con el gen NOS1AP en población colombiana*
Association of Schizophrenia and its Clinical Implications with the NOS1AP Gene in the Colombian Population
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Jenny García Valencia1,
Corresponding author
jennygarcia@medicina.udea.edu.co

Correspondencia: Jenny García Valencia, Departamento de Psiquiatría, Facultad de Medicina, Universidad de Antioquia, Calle 64 No. 51D-38, Medellín, Colombia
, Ana Victoria Valencia Duarte2, Ana Lucía Páez Vila3, Bárbara Kremeyer4, María Patricia Arbeláez Montoya5, Andrés Ruiz Linares6, Carlos Alberto Palacio Acosta7, Jorge Ospina Duque8, Gabriel Bedoya Berrío9
1 Médica psiquiatra, MSc Epidemiología, PhD Epidemiología, profesora del Departamento de Psiquiatría, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
2 Bióloga, MSc Genética, Aspirante PhD en Biología con énfasis en Genética, profesora de la Facultad de Medicina, Universidad Pontificia Bolivariana, Medellín, Colombia
3 Bióloga, estudiante de MSc en Biología con énfasis en Genética, Laboratorio de Genética Molecular, Universidad de Antioquia, Medellín, Colombia
4 Bióloga, PhD Genética, Department of Genetics, Evolution and Environment, University College of London
5 Médica MSc Salud Pública, PhD Epidemiología, profesora del Departamento de Ciencias Básicas, Facultad Nacional de Salud Pública, Universidad de Antioquia, Medellín, Colombia
6 Médico, PhD Genética, profesor, University College of London
7 Médico psiquiatra, MSc Epidemiología, profesor del Departamento de Psiquiatría, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
8 Médico Psiquiatra, MSc Epidemiología, profesor del Departamento de Psiquiatría, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
9 Biólogo, MSc Bioquímica, profesor, coordinador del Laboratorio de Genética Molecular de la Universidad de Antioquia, Medellín, Colombia
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Resumen
Introducción

El gen NOS1AP codifica para la proteína adaptadora de óxido nítrico sintasa neuronal 1, que posiblemente está implicada en la etiopatogénesis de la esquizofrenia.

Objetivos

Determinar si existe asociación de variantes en el gen NOS1AP con esquizofrenia y si estas variantes tienen relación con las dimensiones clínicas del trastorno en población colombiana.

Metodología

Es un estudio de casos y controles, con 255 sujetos por grupo. Se tipificaron marcadores dentro del gen NOS1AP y otros informativos de origen genético, con el fin de ajuster por estratificación de la población. Se hizo un análisis factorial de componentes principales de cada uno de los ítems de las escalas de evaluación de síntomas negativos (SANS) y de síntomas positivos (SAPS) para determinar las dimensiones clínicas. Posteriormente, se evaluó la asociación de las variantes genéticas con la esquizofrenia y con cada una de las dimensiones.

Resultados

Se encontró asociación entre el genotipo C/C del marcador rs945713 con esquizofrenia (OR = 1,79, IC95%: 1,13-2,84). El genotipo C/C de rs945713 se asoció con puntuaciones más altas en la dimensión “aplanamiento afectivo y alogia” y el genotipo A/A del marcador rs4657181 se relacionó con puntuaciones más bajas en esa misma dimensión.

Conclusiones

Se encontró asociación significativa de marcadores dentro de NOS1AP con esquizofrenia y la dimensión clínica “aplanamiento afectivo y alogia”. Estos resultados son consistentes con estudios previos y apoyan la posibilidad de que NOS1AP influya en la susceptibilidad a esquizofrenia y que sea un modificador de sus características clínicas.

Palabras clave:
Esquizofrenia
NOS1AP
genética
Abstract
Introduction

The nitric oxide synthase 1 adaptor protein (NOS1AP) gene is possibly implicated in schizophrenia etiopathogenesis.

Objective

To determine the association of NOS1AP gene variants with schizophrenia and the relationship of variants with the clinical dimensions of the disorder in the Colombian population.

Methodology

It is a case-control study with 255 subjects per group. Markers within the NOS1AP gene were typified as well as other informative material of genetic origin so as to adjust by population stratification. A factorial analysis of the main components for each item in the Scales for Evaluating Negative Symptoms (SENS) together with the Scales for Evaluating Positive Symptoms (SEPS) to determine clinical dimensions.

Results

Association between the C/C genotype of the rs945713 marker with schizophrenia (OR = 1.79, 95% CI: 1.13 – 2.84) was found. The C/C genotype of the rs945713 was related to higher scores in the “affective flattening and alogia” dimension; and the A/A genotype of the rs4657181 marker was associated to lower scores in the same dimension.

Conclusions

Significant associations of markers inside the NOS1AP gene with schizophrenia and the “affective flattening and alogia” clinical dimension were found. These results are consistent with previous studies and support the possibility that NOS1AP influences schizophrenia susceptibility. Furthermore, NOS1AP might be a modifier of schizophrenia clinical characteristics.

Key words:
Schizophrenia
NOS1AP
genetics
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Este trabajo fue financiado por Colciencias (código 111545921538) y por el CODI-Universidad de Antioquia (código: CIM-E01242). Este artículo se basa en la tesis académica para obtener el título de Doctorado en Epidemiología, 2010, Universidad de Antioquia.

Conflictos de interés: Los autores manifiestan que no tienen conflictos de interés en este artículo.

Copyright © 2012. Asociación Colombiana de Psiquiatría
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