收费类受体7通过限制"炎症性"巨细胞激活来保护动脉样硬化
Maria Salagianni1, Ioanna E Galani, Anna M Lundberg
1Center for Immunology and Transplantation, Biomedical Research Foundation, Academy of Athens, Soranou Efesiou 4, Athens 11527, Greece.
Circulation
|July 13, 2012
概括
收费类受体7 (TLR7) 通过减少炎症来意外地保护动脉样硬化. 这一发现挑战了TLRs仅仅是有害的观点,并表明TLR7是心血管疾病的潜在治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
背景情况:
- 收费类受体 (TLRs) 与动脉样硬化发展和并发症有关.
- 除了TLR2和TLR4之外,大多数TLRs在动脉样硬化中的作用的证据有限.
研究的目的:
- 调查托尔类受体7 (TLR7) 在动脉样硬化病变发生过程中的作用.
主要方法:
- 使用实验性小鼠模型 (Apoe(-/-) 小鼠) 和人类动脉瘤培养物.
- 多普勒超声波和组织病理学评估了病变的发展和斑块的脆弱性.
- 分析了人类生物库和动脉内关节切除样本的TLR7表达和炎症标志物.
主要成果:
- 在小鼠中,TLR7无活化加速了病变的发展,增加了狭窄,增加了斑块的脆弱性.
- TLR7降低了巨细胞对TLR2/TLR4连接体的炎症反应,降低了单细胞化学吸引蛋白-1和有限的炎症单细胞/巨细胞积累.
- 在人体样本中,TLR7水平与抗炎M2巨体标记物和原基因相关,与亲炎媒介物相反.
结论:
- 通过限制炎症性巨细胞激活和细胞因子产生,TLR7在动脉样硬化中起着保护作用.
- 这挑战了所有TLRs在动脉样硬化中都是致病性的范式.
- TLR7通路代表了动脉样硬化治疗的潜在治疗标.
更多相关视频
相关概念视频
Atherosclerosis III: Management
460
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...
460
Coronary Artery Disease II: Pathophysiology
571
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...
571
Atherosclerosis I: Introduction
1.3K
Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
1.3K
Inflammation
62.6K
Overview
62.6K
T Cell Types and Functions
2.7K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
2.7K
Inflammatory Response
17.2K
An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
17.2K


