循环氧基因酶-2 抑制改善高胆固醇血引起的心脏功能障碍
Bernadett Kiss1, Regina N Nagy1, Gábor B Brenner1
1Department of Pharmacology and Pharmacotherapy, Semmelweis University, Nagyvárad tér 4, Budapest H-1089, Hungary; Center for Pharmacology and Drug Research & Development, Semmelweis University, Nagyvárad tér 4, Budapest H-1089, Hungary.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
|November 30, 2025
概括
罗菲科克西布在老鼠中惊人地改善了高胆固醇血引起的心脏功能障碍. 这项研究揭示了rofecoxib的存在.
科学领域:
- 心血管药理学心血管药理学
- 药物诱导的心脏毒性 药物诱导的心脏毒性
- 代谢性心肌病变性 代谢性心肌病变性
背景情况:
- 隐藏的心脏毒性表现在患病的心脏中.
- 选择性循环氧基因酶-2 抑制剂,如罗菲科西布,可以表现出前节律性隐性心脏毒性.
- 代谢性并发症,如高胆固醇血症 (HC),可能会加剧隐藏的心脏毒性.
研究的目的:
- 在高胆固醇血症的背景下,调查罗菲科克西布隐藏的心脏毒性作用.
- 为了确定罗菲科克西布是否会加剧或改善高胆固醇贫血大鼠的心脏功能障碍.
- 探索罗菲可西布对高胆固醇心脏的作用背后的分子机制.
主要方法:
- 给老鼠高胆固醇饮食12周,以诱导高胆固醇血症.
- 大鼠接受了罗菲科克西布治疗 (5.12 mg/kg) 四周.
- 进行RNA测序以分析心脏组织中的基因和miRNA表达变化.
主要成果:
- 罗菲科克西布治疗令人惊地改善了因高胆固醇血症引起的轻度心脏功能障碍.
- 心脏功能标志物,包括末端透气压,中风工作和机械效率,通过rofecoxib恢复.
- 由于HC,RNA测序揭示了28个miRNA和300个基因的显著变化,罗菲可西布逆转了特定miRNA (miR-27a-5p,miR-30d-5p) 和基因 (Cdc42ep4,Cox5,Cxcl9) 的变化.
结论:
- 这项研究提供了第一个证据,证明罗菲科克西布可以改善高胆固醇血引起的心脏功能障碍.
- 罗菲可西布的有益作用涉及基因表达特征的调节,包括其作用的关键调节者.
- 罗菲科西布对代谢条件下的隐性心脏毒性的影响需要进一步研究.
相关概念视频
Coronary Artery Disease II: Pathophysiology
342
Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
342
Atherosclerosis III: Management
296
Management of atherosclerosis involves an integrated strategy encompassing pharmacological treatment, surgical interventions, lifestyle changes, and nutrition therapy to address the multifactorial nature of the disease.Pharmacological TherapyA cornerstone of atherosclerosis management is the use of pharmacological agents. Statins, such as atorvastatin, are pivotal in inhibiting HMG-CoA reductase, an enzyme that catalyzes an initial step in cholesterol synthesis in the liver. This reduction in...
296
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
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
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations
325
The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
325
Cardiomyopathy II: Dilated Cardiomyopathy
447
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
447


