相关实验视频

Updated: May 4, 2026

Quantification of Atherosclerosis in Mice

Quantification of Atherosclerosis in Mice

Published on: June 12, 2019

冠状动脉微血管功能障碍与高胆固醇血小鼠中增强的溶酶体信号相关

Yun-Ting Wang¹, Alexandra K Moura¹, Rui Zuo¹

¹Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, USA.

bioRxiv : the preprint server for biology

|July 19, 2024

概括

在心脏损伤发生之前,高胆固醇会导致冠状动脉微血管功能障碍 (CMD). 在内皮细胞 (ECs) 中调节TFEB介导的溶酶体信号,可以防止CMD,而ezetimibe显示出治疗潜力.

科学领域:

心血管生物学心血管生物学
细胞和分子医学细胞和分子医学
药理学药理学是指药理学的学科.

背景情况:

冠状动脉微血管功能障碍 (CMD) 从高胆固醇血症可以先于心肌缺血,但潜在的分子机制是不清楚的.
了解这些通路对于预防高胆固醇条件下的心脏损伤至关重要.

研究的目的:

研究高胆固醇血症对小鼠冠状动脉微血管功能和完整性的影响.
阐明分子机制,特别是内皮细胞 (ECs) 中的溶酶体信号传递,涉及高胆固醇血诱导的CMD.

主要方法:

给小鼠吃高胆固醇饮食 (佩根的饮食,PD) 8 周.
使用7 - 基托胆固醇 (7K) 的心声学,免疫光学和细胞培养研究.
评估了对CMD和分子通路的ezetimibe治疗的影响.

主要成果:

PD诱导的CMD,其特点是冠状动脉血流和储量减少,没有心脏重塑.
观察到冠状动脉小动脉的炎症和心肌炎症细胞透的增加,与ECs中的溶酶体信号激活并行.
埃泽胺治疗改善了CMD和炎症;在MCEC中,埃泽胺减弱了7K诱导的线粒体ROS和炎症,同时增强了TFEB激活.

结论:

高胆固醇血引起的CMD可以独立于明显的心脏功能障碍或重塑.
在EC中,TFEB介导的溶酶体信号传递对CMD发展起着保护作用.
埃泽蒂米布通过调节高胆固醇血症中EC炎症和溶酶体通路来证明了潜在的治疗益处.

关键词:

冠状动脉微血管功能障碍冠状动脉微血管功能障碍冠状动脉的流量储备.内皮质功能障碍在内皮质功能障碍超高胆固醇血症是一种高胆固醇血症.lysosome 溶解酶体是如何形成的

更多相关视频

Author Spotlight: Exploring the Relationship Between Lipotoxicity and HFpEF

Author Spotlight: Exploring the Relationship Between Lipotoxicity and HFpEF

Published on: March 29, 2024

Isolation and Analysis of Aortic Arch and Root Lesions in an Atherosclerotic Mouse Model

Isolation and Analysis of Aortic Arch and Root Lesions in an Atherosclerotic Mouse Model

Published on: February 14, 2025

相关概念视频

Cholesterol: Significance and Regulation

Cholesterol: Significance and Regulation

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...

Coronary Artery Disease I: Introduction

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...

Coronary Artery Disease II: Pathophysiology

Coronary Artery Disease II: Pathophysiology

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...