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Inborn Errors of Metabolism01:20

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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...
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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.
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Carbohydrate metabolism is a fundamental biochemical process that ensures a constant supply of energy to living cells. The most important carbohydrate is glucose, which can be broken down via glycolysis to enter into the Krebs cycle and eventually lead to the production of ATP through oxidative phosphorylation.
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Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
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Author Spotlight: Advanced Integrated Model for Sepsis-Induced Myopathy and Single-Cell Metabolic Analysis
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患有COVID-19后多系统炎症综合征的儿童表现出独特的病理生理代谢表现型.

Nathan G Lawler1, Lael M Yonker2,3, Samantha Lodge1

  • 1Australian National Phenome Center, and Center for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, Western Australia 6150, Australia.

Journal of proteome research
|June 9, 2025
PubMed
概括

患有COVID-19和多系统炎症综合征 (MIS-C) 的儿童表现出明显的代谢变化,特别是在脂质中. 儿科COVID-19中的这些代谢干扰反映了严重的成人病例,表明共享的炎症途径和潜在的长期健康影响.

关键词:
这就是SARS-CoV-2病毒.过度炎症是一种高炎症.这是一种炎症炎症炎症炎症.脂质 脂质 脂质 是一种脂蛋白质是一种脂蛋白质.质谱测量质谱测量质谱测量质谱测量质量测量质谱测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量核磁共振光谱学 核磁共振光谱学现象转化 现象转化 现象转化

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科学领域:

  • 生物化学 生物化学
  • 儿童传染病 儿童传染病
  • 代谢学 代谢学 代谢学

背景情况:

  • 儿童的SARS-CoV-2感染范围从轻度到重度,包括儿童多系统炎症综合征 (MIS-C).
  • 了解COVID-19在儿科患者的代谢影响对于评估长期健康后果至关重要.

研究的目的:

  • 与健康对照人群相比,研究患有急性COVID-19和MIS-C的儿童的不同代谢概况.
  • 在儿科血清中识别与SARS-CoV-2感染相关的特定代谢变化和炎症标志物.

主要方法:

  • 147名儿童血清样本的代谢概况 (急性COVID-19,MIS-C,健康对照).
  • 利用核磁共振光谱学和液态染色学-质谱学来测量1101种代谢物.
  • 分析了脂类,Apo-B100/Apo-A1比率,甘油三和炎症标志物.

主要成果:

  • 在急性COVID-19和MIS-C患者中观察到不同的代谢概况,具有显著的脂质变化.
  • 两组都显示出Apo-B100/Apo-A1比率升高,血清炎症标志物增加.
  • MIS-C患者表现出独特的干扰,包括高甘油和改变的脂蛋白组成,反映了严重的成年COVID-19代谢障碍.

结论:

  • 儿科COVID-19和MIS-C诱导显著的代谢障碍,特别是在脂质代谢中.
  • 与严重的成人COVID-19共享的代谢变化表明一个共同的炎症反应途径.
  • 这些发现强调了潜在的长期健康影响,以及对COVID-19在儿童中的代谢后果的进一步研究的需要.