相关实验视频

Updated: Jan 9, 2026

Author Spotlight: Advanced Integrated Model for Sepsis-Induced Myopathy and Single-Cell Metabolic Analysis

Author Spotlight: Advanced Integrated Model for Sepsis-Induced Myopathy and Single-Cell Metabolic Analysis

Published on: June 14, 2024

基因营养与PPARα激活相结合,诱导了败血症小鼠的代谢失败和恶化的肌肉衰弱

Caroline Lauwers¹, Wouter Vankrunkelsven¹, Sarah Derde¹

¹Department of Cellular and Molecular Medicine, Laboratory and Clinical Division of Intensive Care Medicine, KU Leuven, Leuven, Belgium.

Journal of cachexia, sarcopenia and muscle

|December 9, 2025

概括

在败血症小鼠中,PPARα与pemafibrate的药理学激活并没有改善肌肉软弱. 结合pemafibrate和性营养诱导了症,但恶化了肌肉软弱,这表明生物能衰竭.

科学领域:

代谢研究的研究.
败血症的病理生理学
营养支持营养支持

背景情况:

抑制PPARα (氧酶增殖器激活受体α) 与败血症的不良结果和代功能受损有关.
类疗法 (3-基酸盐输注) 已经显示出在危急疾病期间减轻肌肉衰弱的潜力.

研究的目的:

调查药理PPARα激活在诱导生成和减轻肌肉衰弱中的安全性和有效性,在毒症的小鼠模型中.
为了评估将PPARα激活与不同的性亲肠营养 (PN) 配方相结合的影响.

主要方法:

使用长期败血症小鼠模型,用抗生素和液体复苏治疗.
第1项研究:评估Pemafibrate (PPARα激动剂) 与安慰剂与平衡的亲肠道营养 (PN) 相比.
研究2:用四种PN类型 (平衡的,富含脂质的,低剂量纯LCT,高剂量纯LCT) 评估pemafibrate,以评估症和肌肉软弱 (ex vivo肌肉力量).

主要成果:

纤维酸上调肝脏PPARα和下游基因,但没有诱导症或改善平衡或富含脂质PN的肌肉软弱.
高剂量和低剂量纯LCT PN与pemafibrate相结合显著增加了3-基酸盐水平,但恶化了肌肉力量.
纯LCT PN降低了血糖,增加了血脂质,并耗尽了肌肉ATP和糖溶性中间体,表明了生物能量失败.

结论:

与平衡或富含脂质PN的pemafibrate激活PPARα,但未能诱导症或改善败血症中的肌肉虚弱.
性疗法 (纯LCTs) 结合在败血症中PPARα激活会诱导症,但会加剧肌肉疲弱,可能是由于肌肉生物能量的损害.

关键词:

这是一种PPARα.危急的疾病危急的疾病.体是指体中的体.长链甘油三化物代谢代谢代谢代谢肌肉疲弱肌肉疲弱肌肉疲弱败血症是什么败血症是什么

更多相关视频

The Colon-26 Carcinoma Tumor-bearing Mouse as a Model for the Study of Cancer Cachexia

The Colon-26 Carcinoma Tumor-bearing Mouse as a Model for the Study of Cancer Cachexia

Published on: November 30, 2016

Cecal Ligation and Puncture-induced Sepsis as a Model To Study Autophagy in Mice

Cecal Ligation and Puncture-induced Sepsis as a Model To Study Autophagy in Mice

Published on: February 9, 2014

相关概念视频

Overview of Protein Metabolism

Overview of Protein Metabolism

Proteins are broken down into amino acids during digestion. Unlike fats and carbohydrates, which are stored for later use, proteins are not. Instead, amino acids are either used to produce ATP through oxidation or contribute to the creation of new proteins for the growth and repair of the body. Any surplus amino acids from the diet are converted into glucose or triglycerides rather than excreted.
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...

Inborn Errors of Metabolism

Inborn Errors of Metabolism

Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...