肝脂含量轻微升高的特点是胰岛素敏感性降低
Nelli Tuomola1,2,3, Eleni Rebelos1,2,4,5, Aino Latva-Rasku1,2,3
1Turku PET Centre, University of Turku, Turku, Finland.
JHEP reports : innovation in hepatology
|October 20, 2025
概括
轻微升高的肝脂 (1.85%-5.56%) 与白人欧洲人的胰岛素敏感性降低和不良代谢变化有关. 这些发现支持正常肝脏脂肪含量的较低值,突出显示系统性胰岛素抵抗的早期迹象.
科学领域:
- 代谢研究的研究.
- 内分泌学 在内分泌学.
- 心血管健康的心血管健康
背景情况:
- 最近提出了一个新的切断值为正常肝脂含量≤1.85%.
- 肝脂在1.86%至5.56%之间的人与≤1.85%的人相比,胰岛素敏感性较低.
研究的目的:
- 为了评估具有低 (LL; ≤1.85%) 和轻微升高 (MEL; >1.85%和 ≤5.56%) 肝脂的个体之间的组织特异性胰岛素敏感性差异.
主要方法:
- 对202名没有糖尿病的白人欧洲人进行横截面研究.
- 通过磁共振光谱学测量肝脏脂质.
- 使用PET成像和空腹自由脂肪酸的高胰岛素血糖-高血糖进行评估的内源性葡萄糖生产 (EGP) 和脂肪组织的胰岛素耐药性.
主要成果:
- 与LL组相比,MEL组在高胰岛素血症期间表现出更高的EGP (p=0.041) 和脂肪组织胰岛素耐药性增加 (p=0.037).
- 在MEL组中观察到血清甘油三和分支链氨基酸的升高 (FDR <0.05).
结论:
- 与LL患者相比,MEL患者的肝脏和脂肪组织胰岛素敏感性降低,代谢概况不良.
- 研究结果支持白人欧洲人正常肝脂的上限较低.
- 降低EGP抑制和脂解中的胰岛素耐药性是系统性胰岛素耐药性的早期指标.
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-Lowering Drugs: Statins and Miscellaneous Agents
1.3K
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...
1.3K
Blood Studies for Cardiovascular System III: Serum Lipid Profile
550
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...
550
Cholesterol: Significance and Regulation
1.2K
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...
Considering cholesterol and...
1.2K
Obesity
1.1K
The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
1.1K
Diabetes: Symptoms, Diagnosis, and Complications
2.0K
For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is...
2.0K


