La señalización de la insulina y la regulación del metabolismo de la glucosa y los lípidos

Video Experimental Relacionado

Updated: May 2, 2026

Mixed Primary Cultures of Murine Small Intestine Intended for the Study of Gut Hormone Secretion and Live Cell Imaging of Enteroendocrine Cells

Mixed Primary Cultures of Murine Small Intestine Intended for the Study of Gut Hormone Secretion and Live Cell Imaging of Enteroendocrine Cells

Published on: April 20, 2017

A R Saltiel¹, C R Kahn

¹Life Sciences Institute, Department of Medicine, University of Michigan School of Medicine, Ann Arbor, Michigan 48109, USA. saltiel@umich.edu

|December 14, 2001

Resumen

La diabetes tipo 2 y el deterioro de la tolerancia a la glucosa son importantes problemas de salud a nivel mundial. La resistencia a la insulina en tejidos como el músculo, la grasa y el hígado contribuye a estas condiciones y otros trastornos metabólicos.

Área de la Ciencia:

Endocrinología y Metabolismo.
Biología Molecular Biología Molecular
Salud Pública La salud pública.

Sus antecedentes:

La diabetes mellitus tipo 2 (T2DM) y la intolerancia a la glucosa (IGT) son factores que contribuyen significativamente a la morbilidad y mortalidad en todo el mundo.
La resistencia a la insulina, caracterizada por una respuesta reducida del tejido a la insulina en el músculo, la grasa y el hígado, subyace a estas condiciones.
La resistencia a la insulina se asocia con un grupo de anomalías metabólicas que incluyen obesidad, enfermedad poliquística de los ovarios, hiperlipidemia, hipertensión y aterosclerosis.

Objetivo del estudio:

Para aclarar la compleja fisiopatología de la resistencia a la insulina.
Identificar las vías de señalización clave involucradas en la acción y resistencia a la insulina.
Comprender el papel de varias hormonas y eventos de señalización en la DMT2.

Principales métodos:

Revisión de la literatura existente sobre las vías de señalización de la insulina.
Análisis de los mecanismos moleculares subyacentes a la resistencia a la insulina.
Investigación de las alteraciones de la señalización hormonal y celular.

Principales resultados:

La resistencia a la insulina afecta la absorción y el metabolismo de la glucosa en los tejidos clave.
Una compleja red de vías de señalización, iniciada por el receptor de insulina, regula el metabolismo celular.
La evidencia emergente indica que muchas otras hormonas y eventos de señalización modulan la acción de la insulina y son críticos en la DMT2.

Conclusiones:

La resistencia a la insulina es un mecanismo central en la diabetes tipo 2 y la alteración de la tolerancia a la glucosa.
Comprender la intrincada red de señalización es crucial para desarrollar terapias efectivas de DMT2.
Se justifica una mayor investigación sobre las vías de señalización no canónicas para abordar completamente la epidemia de DM2.

Más Videos Relacionados

Mechanisms Underlying Gut Hormone Secretion Using the Isolated Perfused Rat Small Intestine

Mechanisms Underlying Gut Hormone Secretion Using the Isolated Perfused Rat Small Intestine

Published on: February 26, 2019

Author Spotlight: Investigating the Blood Glucose Homeostasis in Murine Brain Using a Cost-Effective Hyperglycemic And Hypoglycemic Clamp Technique

Author Spotlight: Investigating the Blood Glucose Homeostasis in Murine Brain Using a Cost-Effective Hyperglycemic And Hypoglycemic Clamp Technique

Published on: January 26, 2024

Videos de Conceptos Relacionados

Hormonal Regulation

Hormonal Regulation

Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.

Feedback Loops

Feedback Loops

In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.

Cells and Secretions of the Pancreas

Cells and Secretions of the Pancreas

The pancreas, a vital organ within the abdominal cavity, plays dual roles in the digestive and endocrine systems, collaborating with exocrine and endocrine cells to maintain optimal digestion and blood sugar levels.
Exocrine function is carried out by acinar cells, organized into clusters known as acini. These cells contribute to digestion by releasing substantial quantities of enzyme-rich, alkaline digestive juices.
Concurrently, the dispersed clusters of endocrine cells throughout the...

Hormones Regulating Blood Glucose

Hormones Regulating Blood Glucose

Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
In addition to accelerating glucose uptake and utilization, insulin has...

Glucose Homeostasis: Regulation of Blood Glucose

Glucose Homeostasis: Regulation of Blood Glucose

Carbohydrates consumed through foods are converted into glucose, a crucial energy source for the body. In the prandial state, high blood glucose levels stimulate the secretion of insulin from the pancreas. Insulin inhibits hepatic glucose production and stimulates glucose uptake and metabolism by muscle and adipose tissue. The excess glucose is converted into glycogen and stored in the liver and muscles.
During fasting, when blood glucose levels are low, the pancreas secretes glucagon. it...

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are...