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相关概念视频

Cholesterol: Significance and Regulation01:29

Cholesterol: Significance and Regulation

519
Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
519
Blood Studies for Cardiovascular System III: Serum Lipid Profile01:25

Blood Studies for Cardiovascular System III: Serum Lipid Profile

135
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...
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Lipid Absorption01:24

Lipid Absorption

403
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...
403
Lipid-Lowering Drugs: Statins and Miscellaneous Agents01:20

Lipid-Lowering Drugs: Statins and Miscellaneous Agents

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Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...
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Fats as Energy Storage Molecules01:06

Fats as Energy Storage Molecules

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Triglycerides are a form of long-term energy storage molecules. They are made of glycerol and three fatty acids. To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called lipolysis, takes place in the cytoplasm. The resulting fatty acids are oxidized by β-oxidation into acetyl-CoA, which is used by the Krebs cycle. The glycerol that is released from triglycerides after lipolysis...
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Lipid Digestion01:06

Lipid Digestion

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Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.
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相关实验视频

Updated: Jun 12, 2025

Cell-free Biochemical Fluorometric Enzymatic Assay for High-throughput Measurement of Lipid Peroxidation in High Density Lipoprotein
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高密度胆固醇与甘油三相遇

Tugce Akcan1, Fredric B Kraemer1

  • 1Division of Endocrinology, Gerontology and Metabolism, Stanford University School of Medicine, Stanford, CA, USA.

Journal of lipid research
|April 6, 2025
PubMed
概括
此摘要是机器生成的。

高密度脂蛋白 (HDL) 颗粒中的高甘油三水平与动脉样硬化心血管疾病风险的增加有关. 这项研究表明,评估HDL甘油三 (HDL-TG) 可以改善心血管风险评估.

关键词:
在 HDL 和 HDL 之间.心血管疾病的风险.甘油三酸是什么?甘油三酸是什么?

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Differential Effects of Lipid-lowering Drugs in Modulating Morphology of Cholesterol Particles
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Differential Effects of Lipid-lowering Drugs in Modulating Morphology of Cholesterol Particles

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Assessing Whole-Body Lipid-Handling Capacity in Mice
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Cell-free Biochemical Fluorometric Enzymatic Assay for High-throughput Measurement of Lipid Peroxidation in High Density Lipoprotein
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Cell-free Biochemical Fluorometric Enzymatic Assay for High-throughput Measurement of Lipid Peroxidation in High Density Lipoprotein

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科学领域:

  • 心血管研究研究心血管研究
  • 脂质代谢 脂质代谢是什么
  • 生物化学 生化学

背景情况:

  • 动脉样性心血管疾病 (ASCVD) 仍然是全球死亡的主要原因.
  • 传统的脂质资料,包括总胆固醇和LDL-C,在充分评估ASCVD风险方面存在局限性.
  • 高密度脂蛋白 (HDL) 胆固醇以其保护作用而闻名,但其子类和修改,如HDL三糖化物 (HDL-TG),越来越被认为是重要的.

研究的目的:

  • 调查HDL甘油三 (HDL-TG) 与动脉样硬化心血管疾病 (ASCVD) 风险之间的关联.
  • 探索血清甘油三水平,HDL颗粒特征和HDL-TG之间的关系.
  • 确定HDL-TG是否是ASCVD风险的独立预测因素.

主要方法:

  • 利用了来自英国生物库的数据,这是一个大规模的前性队列研究.
  • 使用观察分析来检查脂质参数和ASCVD之间的关联.
  • 应用孟德尔的随机化分析来推断因果关系并评估独立的关联.

主要成果:

  • 血清甘油三水平升高与较小的HDL粒子直径和增加的HDL-TG相关.
  • HDL-TG水平与动脉样硬化心血管疾病风险有独立的关联.
  • 在调整多个混因素和确定的心血管风险因素后,这种关联仍然存在.

结论:

  • 高密度胆固醇甘油三 (HDL-TG) 与动脉样硬化心血管疾病风险的增加显著相关.
  • 目前的脂质评估可能无法完全捕捉心血管风险; 纳入HDL-TG可能是有益的.
  • 这些发现凸显了评估更广泛的脂质参数范围对于增强心血管风险分层的重要性.