相关实验视频
Updated: Jan 16, 2026

06:47
Isolation and Analysis of Plasma Lipoproteins by Ultracentrifugation
Published on: January 28, 2021
12.4K
脂蛋白的生物学:从遗传学到分子机制
Mark Atallah1, Nadim Nasrallah1, Tarek Harb1
1Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
European journal of clinical investigation
|October 3, 2025
概括
升高的脂蛋白 (Lp) 是一种由基因决定的粒子,对心血管风险有显著的贡献. 了解其结构,新陈代谢和致病性对于治疗动脉样硬化心血管疾病患者的残留风险至关重要.
科学领域:
- 心血管科学 心血管科学
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
背景情况:
- 脂蛋白 (Lp) 是一种基因决定的粒子,涉及到动脉样硬化心血管疾病 (ASCVD) 和动脉疾病 (CAVD).
- 升高的Lp (a) 显著导致残留心血管风险,即使在传统脂质水平的最佳管理下,影响全球20%的人口.
研究的目的:
- 为了提供一个全面的遗传学,结构,新陈代谢和分子机制的Lp的致病性.
- 阐明Lp (a) 在心血管和膜疾病中的作用.
主要方法:
- 在PubMed/Medline和谷歌学者的文献搜索到2025年7月.
- 关于Lp的研究的综述 (a) 遗传学,结构,新陈代谢和致病性.
主要成果:
- Lp(a) 包含一个与LDL类似的核心,与apolipoprotein ((a) [apo(a) 结合,KIV-2的重复变异性决定了apo(a) 尺寸和Lp(a) 水平;较小的异构体导致更高的度.
- Lp(a) 在肝细胞中合成,生产占清除的优势,并携带氧化脂 (OxPLs),促进炎症,内皮功能障碍和纤维素分解损伤.
- Lp (a) 通过向膜间歇细胞输送OxPLs和自毒素,直接促进膜化,从而启动骨质生成信号.
结论:
- 遗传变异是终身Lp (a) 负担的主要决定因素,环境因素具有暂时的影响.
- 对于风险分层和临床管理来说,对Lp(a) 生物学的机制性洞察是必不可少的,特别是在正在开发的新型Lp(a) 向治疗中.
相关概念视频
Overview of Lipid Metabolism
4.8K
Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
4.8K
Lipid-derived Compounds in the Human Body
6.2K
Fats and lipids are crucial components in the human body. Some lipid-derived compounds, such as fat-soluble vitamins, eicosanoids, lipoproteins, and glycolipids, also play unique roles to support various biological processes .
Fat-soluble Vitamins
Fat-soluble vitamins, including vitamins A, D, E, and K, are required in minimal quantities, but their deficiencies can lead to severely abnormal physiological conditions. For example, vitamin A deficiency can cause night blindness, dry skin,...
Fat-soluble Vitamins
Fat-soluble vitamins, including vitamins A, D, E, and K, are required in minimal quantities, but their deficiencies can lead to severely abnormal physiological conditions. For example, vitamin A deficiency can cause night blindness, dry skin,...
6.2K
Atherosclerosis I: Introduction
916
Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
916
Formation of Lipopolysaccharides
550
Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin,...
550
Lipid Absorption
2.4K
Dietary triglycerides from chyme in the duodenum are mixed with bile salts produced by the liver to emulsify fats. As a result, large droplets are broken down into smaller ones, increasing the surface area for enzymatic action. Once emulsified, pancreatic lipases hydrolyze the triglycerides into free fatty acids and monoglycerides.
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
2.4K
Blood Studies for Cardiovascular System III: Serum Lipid Profile
554
Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
554

