Abstract
Las enfermedades crónicas no transmisibles son las entidades que tienen mayor repercusión en el sector salud a nivel global. Quizá una de las circunstancias que más se encuentra relacionada con el aumento progresivo en muchas de estas entidades es la obesidad. Las causas y posibles planes terapéuticos para la obesidad son complejos, por tal motivo deben ser enfocados desde diferentes tejidos en el organismo. Uno de estos enfoques sería la regulación del centro del hambre y la saciedad a nivel central, especialmente en el hipotálamo, otro es la forma como el individuo gasta su energía en las células musculares y un aspecto adicional es la forma en que las células adiposas almacenan y ahorran energía. En los últimos años se ha observado que los individuos adultos cuentan con diferentes tipos de células adiposas con origen germinal divergente. La presencia de estas células adiposas puede tener una variación fenotípica y en determinadas circunstancias podría presentar una función más termogénica de acuerdo con diferentes circunstancias ambientales. La influencia del ambiente se realiza mediante la modificación de genes específicos, que pueden determinar una variación funcional del hipotálamo, el músculo y el tejido adiposo. Estas modificaciones son denominadas epigenéticas, dado que no influyen sobre la estructura del ADN, pero cambian completamente su funcionalidad. En el presente trabajo hemos realizado un estudio de las circunstancias a través de las cuales el ambiente puede tener influencia en la aparición de la obesidad. Se ha realizado una búsqueda mediante las bases de datos de Pubmed, Evidencia Based Medicine, Science direct, Ovid, EBSCO, Proquest, Springer, desde enero del año 2012 hasta marzo del año 2017, buscando como palabras clave, obesidad, adipocito y los términos epigenética y ambiente.
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