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Efecto de la acetilcolina en la capacidad secretora de insulina de las células beta del páncreas

Authors: Gómez Sierra, Marina;

Efecto de la acetilcolina en la capacidad secretora de insulina de las células beta del páncreas

Abstract

El páncreas es una glándula vital para el contr ol metabólico del organismo. Una de las funciones de éste órgano es la regulación de la glucemia , que es esencial para la función fisiológica saludable del cuerpo, debido a que tanto el exceso como el defecto de glucosa s on perjudiciales para el organismo , produciendo enfermedades como la DM tipo 2, cada vez más prevalente en nuestro medio. E l principal regulador de la secreción de insulina en las células β pancreáticas es la concentración de glucosa en sangre . Sin embargo se ha comprobado que el sistema nervioso autónomo podría contribuir en la potenciación de su secreción. El sistema nervioso parasimpático inerva el páncreas endocrino ejerciendo su acción por medio de los receptores muscarínicos, activando una vía amplificadora mediada por un aumento de AMP c intracelular, que tiene como resultado, un aumento de la actividad eléctrica por aumento de la entrada de calcio intracelular . Se ha estudiado l a actividad eléctrica intracelular de las células β pancr eáticas. Esta fue registrada en islotes de Langerhans, obtenidos mediante microdisección, de ratones al b inos, sacrificados por dislocación cervical . En éste trabajo se ha estudiado el comportamiento electrofisiológico de la célula β , y se ha demostrado que el carbacol tiene un efecto potenciador sobre la célula β.

P ancreas is a vital gland for the metabolic control of the organism. One of the functions of this organ is the regulation of glycemia, which is essential for the healthy physiological function of the body, because both the excess and the defect of glucose are harmful to the body, producing diseases such as DM type 2, increasingly prevalent in our environment. The main regulator of insulin secretion in pancreatic β cells is the concentration of glucose in the blood. However, it has been proven that the autonomic nervous system, among others, can contribute t o the enhancement of its secretion. The parasympathetic nervous system innervates the endocrine pancreas by exerting its action through the muscarinic receptors, activating an amplifying pathway mediated by an increase in intracellular cAMP, which results in the release of insulin. The intracellular electrical activity of the pancr eatic β cells has been studied. I t was recorded in islets of Langerhans, obtained by microdissection, of albino mice, sacrificed by cervical dislocation. In this work we have an alyzed the electrophysiological behavior of the β cell, and it has been shown that carbachol has an enhancing effect on the β cell.

Treball Final de Grau en Medicina. Codi: MD1158. Curs acadèmic: 2017/2018

Country
Spain
Related Organizations
Keywords

Sistema colinérgico, Cholinergic system, Grado en Medicina, β cells, Acetilcolina, Acetylcholine, Células β, Electrophysiology, Electrofisiología, Grau en Medicina, Bachelor's Degree in Medicine, Insulina, Insulin

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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