Video Experimental Relacionado
Updated: May 14, 2026
09:48
Differentiated Mouse Adipocytes in Primary Culture: A Model of Insulin Resistance
Published on: February 17, 2023
Los orígenes y los impulsores de la resistencia a la insulina
Andrew M F Johnson1, Jerrold M Olefsky
1Department of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0673, USA.
Cell
|February 19, 2013
Resumen
La obesidad causa resistencia a la insulina, un factor clave en el síndrome metabólico y la diabetes tipo 2. Esta perspectiva explora la inflamación, el metabolismo de los lípidos y la microbiota intestinal.
Área de la Ciencia:
- Trastornos metabólicos y endocrinología.
- Gastroenterología e inmunología.
Sus antecedentes:
- La resistencia a la insulina, impulsada por la obesidad, es un factor primario en el síndrome metabólico.
- El síndrome metabólico precede a la diabetes mellitus tipo 2, lo que contribuye a la epidemia mundial de diabetes.
Objetivo del estudio:
- Ofrecer una perspectiva sobre las diversas causas de la resistencia a la insulina.
- Para resaltar las funciones de la inflamación, el metabolismo de los lípidos y la microbiota intestinal en la resistencia a la insulina.
Principales métodos:
- Este estudio presenta una perspectiva, sintetizando la investigación existente.
- Se centra en la interacción entre la obesidad, la inflamación, el metabolismo de los lípidos y el microbioma intestinal.
Principales resultados:
- La resistencia a la insulina tiene una etiología heterogénea.
- La inflamación, el metabolismo de los lípidos y la microbiota gastrointestinal son contribuyentes significativos.
Conclusiones:
- Comprender la naturaleza multifactorial de la resistencia a la insulina es crucial para hacer frente a la epidemia de diabetes.
- Dirigirse a la inflamación, el metabolismo lipídico y la microbiota intestinal puede ofrecer estrategias terapéuticas.
Videos de Conceptos Relacionados
01:26Type II Diabetes I: Introduction
Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder characterized by insulin resistance, in which target tissues such as the liver, muscle, and adipose tissue respond poorly to insulin. It is also associated with inadequate compensatory insulin secretion, where pancreatic β-cells fail to produce sufficient insulin. Together, these abnormalities lead to persistent hyperglycemia.EtiologyT2DM develops through a complex interaction of genetic predisposition and environmental or...
01:24Type II Diabetes II: Pathophysiology
PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.
01:28Insulin: The Receptor and Signaling Pathways
Insulin action is mediated through a receptor tyrosine kinase, akin to the IGF-1 receptor. The number of receptors per cell varies significantly, from 40 on erythrocytes to 300,000 on adipocytes and hepatocytes. The insulin receptor consists of linked α/β subunit dimers, forming a heterotetramer glycoprotein with two extracellular α subunits and two β subunits spanning the membrane. The α subunits inhibit the inherent tyrosine kinase activity of the β subunits, but this inhibition is released...
01:26Type I Diabetes II: Pathophysiology
Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...
01:12Type I Diabetes I: Introduction
Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1 diabetes is an...
01:26Diabetes Mellitus: Introduction
Diabetes mellitus consists of chronic metabolic disorders characterized by persistent hyperglycemia. This elevated blood glucose results from defects in insulin secretion, impaired insulin action, or both. Insulin, produced by pancreatic β-cells, is essential for maintaining glucose homeostasis by facilitating cellular glucose uptake for energy or storage. Disruptions in insulin production or function lead to glucose accumulation in the bloodstream, causing the clinical features and long-term...