VLDL脂组学揭示了在代谢功能障碍相关的脂肪性肝病中肝细胞脂组的变化
David Guardamino Ojeda1, Yusuf Yalcin2, Yered Pita-Juarez3
1Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.
Hepatology communications
|May 23, 2025
概括
与代谢功能障碍相关的脂肪性肝病 (MASLD) 改变了VLDL脂质组成. 肝硬化和纤维化表现出明显的VLDL特征,由MASLD基因进一步修饰,影响肝脏健康.
科学领域:
- 利皮多米克 (Lipidomics) 是一种消化剂.
- 肝病学 肝病学是一种肝病学.
- 遗传学 是一个遗传学.
背景情况:
- 非常低密度脂蛋白 (VLDL) 的产生是肝脂平衡的关键.
- 与代谢功能障碍相关的脂肪性肝病 (MASLD) 可能会改变VLDL脂质组成.
- 了解这些变化对于MASLD管理至关重要.
研究的目的:
- 为了研究VLDL脂质组和MASLD组织学之间的关系.
- 探索与MASLD相关的遗传变异对VLDL组成的影响.
- 在VLDL脂质中定义MASLD特异性变化.
主要方法:
- 在血清VLDL颗粒上的非向性脂质组学.
- 在活检证明的MASLD患者中分析VLDL-脂质组.
- 与MASLD疾病特征和遗传变异的相关性.
主要成果:
- 肝肥胖症与VLDL甘油三酸 (TG) 的增加有关,特别是与棕酸有关.
- 与改变的VLDL-TG链分布相关的甜症 (↑和/单不和,↓多不和).
- 叶片炎症与减少的多不和脂相关;与减少的VLDL-TG和增加的陶胺 (Cer) 相关的晚期纤维化.
- 与MASLD相关的遗传变异 (PNPLA3,TM6SF2,等等) 显示出明显的VLDL-脂质体特征.
结论:
- MASLD肝硬化和纤维化表现出明显的VLDL-脂质体特征.
- 与MASLD相关的基因进一步修改了这些VLDL变异.
- 病原性特征对MASLD中的肝细胞脂质稳态有差异性影响.
相关概念视频
01:24Overview of Lipid Metabolism
6.2K
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...
6.2K
01:25Lipid Catabolism
1.2K
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
1.2K
01:31Lipid-derived Compounds in the Human Body
7.2K
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,...
7.2K
01:22Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test
244
In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess...
244
01:06Lipid Digestion
101.0K
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.
101.0K
01:30Liver Physiology
4.0K
The liver, an essential organ in the human body, performs over 200 vital functions that can be broadly categorized into metabolic, hematological, endocrine regulation, and bile production.
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of 70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can...
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of 70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can...
4.0K