埃沃洛库马布和阿托瓦斯塔丁对脂蛋白代谢的因子影响
Gerald F Watts1, Dick C Chan2, Ricardo Dent2
1From Lipid Disorders Clinic, Department of Cardiology, Royal Perth Hospital, Australia (G.F.W.); School of Medicine and Pharmacology, University of Western Australia, Crawley (D.C.C., S.B., P.H.R.B.); Amgen Europe, Inc, Zug, Switzerland (R.D., R.S., S.M.W.); and Amgen Inc, Thousand Oaks, CA (R. Scott). gerald.watts@uwa.edu.au.
Circulation
|December 13, 2016
概括
埃沃洛库马布是一种PCSK9单克隆抗体,通过增加脂蛋白代谢和减少产量来降低LDL胆固醇. 与阿托瓦斯塔丁联合治疗比单独治疗更大降低了LDL,提供了明显的代谢益处.
科学领域:
- 脂肪新陈代谢
- 药学动力学
- 心血管研究
背景情况:
- 蛋白转化酶素9型 (PCSK9) 单克隆抗体,如埃沃洛库马布,降低LDL胆固醇.
- PCSK9抑制剂对脂蛋白代谢的确切机制需要进一步阐明.
- 稳定同位素标记物的动力学是研究脂质调节药物治疗的有价值的工具.
研究的目的:
- 研究阿托瓦斯塔丁和埃沃洛库马布对VLDL,IDL和LDL B-100 (apoB) 的血动力学的影响.
- 为了比较阿托瓦斯塔丁和埃沃洛库马布单独和组合的代谢作用机制.
- 提供关于PCSK9抑制剂在他类药物治疗之外的增量益处的动态见解.
主要方法:
- 这是一项2x2因子试验,涉及81名健康男性.
- 服用阿托瓦斯塔丁 (每天80毫克) 和/ 或埃沃洛库马布 (每两周服用420毫克),持续8周.
- 稳定同位素注入D3-氨酸,GC/MS,并进行多部门建模以研究VLDL,IDL和LDL中的apoB动力学.
主要成果:
- 艾托瓦斯塔丁和埃沃洛库马布都加速了VLDL-apoB,IDL-apoB和LDL-apoB的分量代谢.
- 埃沃洛库马布降低了IDL-apoB和LDL-apoB的产生速度,而非阿托瓦斯塔丁,从而降低了血脂蛋白水平.
- 与单一治疗相比,组合治疗显著降低了LDL-apoB和LDL胆固醇.
结论:
- 通过增强它们的代谢和降低它们的产量,Evolocumab可降低动性脂蛋白,主要是LDL.
- 与阿托瓦斯塔丁相比,埃沃洛库马布的动力特征显示出不同的作用机制.
- 这些发现支持PCSK9单克隆抗体在与他类药物一起使用时可能具有添加性心血管益处.
相关概念视频
Lipid-Lowering Drugs: Statins and Miscellaneous Agents
1.6K
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...
1.6K
Cholesterol: Significance and Regulation
1.8K
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...
1.8K
Lipid Catabolism
1.3K
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...
1.3K
Blood Studies for Cardiovascular System III: Serum Lipid Profile
727
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...
727
Overview of Lipid Metabolism
6.3K
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...
6.3K
Lipid Absorption
3.2K
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...
3.2K


