使用多路数据分析来描述人类食后代谢反应的特征
Shi Yan1, Lu Li1, David Horner2
1Department of Data Science and Knowledge Discovery, Simula Metropolitan Center for Digital Engineering, Oslo, Norway.
概括
这项研究使用先进的张量分解来分析食后代谢数据,揭示了与男性的体重指数 (BMI) 相关的动态代谢标记. 这些发现提高了人们对饭后人体新陈代谢的理解.
科学领域:
- 代谢学 代谢学 代谢学
- 系统生物学 系统生物学
- 人类新陈代谢的人类新陈代谢.
背景情况:
- 时间解析的代谢学数据为人类对食物的代谢反应提供了洞察力.
- 传统的分析方法经常使用摘要或专注于单个代谢物,限制了全面的理解.
- 了解饭后的个体代谢变化对于个性化健康洞察至关重要.
研究的目的:
- 为了全面描绘饭后的新陈代谢变化挑战.
- 识别表型的静态和动态标记,包括受试者分层和代谢物.
- 揭示代谢物的时间概况及其与代谢反应的关系.
主要方法:
- 核磁共振 (NMR) 光谱数据的分析来自COPSAC2000队列中的299名个体.
- 使用了Nightingale NMR面板,用于禁食和多个食后时间点的血样本.
- 对于静态的禁食数据,使用主要组件分析 (PCA),对于动态的食后数据,使用CANDECOMP/PARAFAC (CP) 张量分解.
主要成果:
- 确定了动态代谢标志物,包括特定的代谢物组和时间概况,通过食后的体重指数 (BMI) 来区分男性.
- 证明脂蛋白在禁食和动态状态下不同地影响群体差异.
- 在男性和女性中观察到类似的动态代谢模式,但与BMI相关的差异是动态状态中的男性特有的.
结论:
- 坎德康普/帕拉法克 (CP) 张量分解对于分析时间解析的食后代谢学数据是有效的.
- CP模型提供了一个简洁而全面的总结,揭示了可解释的动态标记.
- 这种方法有助于我们更好地了解饭后代谢变化.
相关概念视频
01:23Mechanistic Models: Compartment Models in Individual and Population Analysis
38
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
38
01:25Metabolic States of the Body: The Absorptive State
683
During the absorptive state, which lasts approximately four hours after a meal, the body absorbs nutrients from the gastrointestinal tract. The carbohydrates, proteins, and lipids we consume are broken down into monosaccharides, amino acids, and free fatty acids for absorption. While carbohydrates and proteins are absorbed as-is, lipids are absorbed in their broken-down forms and then re-esterified into triglycerides within enterocytes before being packaged into chylomicrons. These absorbed...
683
01:18Metabolic States of the Body: The Postabsorptive State
302
The postabsorptive state usually starts about four hours after a meal and lasts until the next meal is eaten. During this time, the digestive system stops absorbing nutrients, and the body uses stored energy reserves to maintain stable blood glucose levels.
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
302