干扰素主要在内皮中产生托尔类受体介导的血栓生成
Kelsey D Sack1, Nathan Eaton2, Maneli Doroudian Tehrani2
1Division of Hemostasis and Thrombosis, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA. Electronic address: https://twitter.com/hemeThrombBIDMC.
Journal of thrombosis and haemostasis : JTH
|December 30, 2023
概括
肺上皮干扰素 (IFN) 是呼吸道感染期间血块形成的关键驱动因素. 这些IFN增强托尔样受体 (TLR) 介导的血栓生成,导致血管并发症.
科学领域:
- 肺部医学 肺部医学
- 免疫学 免疫学 免疫学
- 血管生物学 血管生物学
背景情况:
- 呼吸道感染引发微血管血栓形成和细胞因子水平升高.
- 肺上皮细胞因子在血栓反应中的作用尚不清楚.
研究的目的:
- 识别肺上皮细胞因子,以感染相关的度增强内皮血栓生成.
- 研究这些细胞因子通过哪些机制影响原血栓性因素.
主要方法:
- 选的肺上皮细胞因子用于增强托尔样受体 (TLR) 介导的血栓生成.
- 对内皮组织因子和血栓模块蛋白表达的评估影响.
- 从炎症的肺上皮细胞的条件介质中评估细胞因子活性.
主要成果:
- 干扰素 (IFN) 和TNFα在感染期间在循环水平上促进了TLR3介导的血栓生成.
- IFNs增强了组织因子和降低了血栓模块素表达.
- 来自炎症的上皮细胞的内源性IFN为TLR介导的血栓生成启动了内皮.
结论:
- 由肺上皮细胞产生的干扰素 (IFN) 对于增强TLR介导的血栓生成至关重要.
- 这些发现强调了IFN作为感染相关血栓形成的关键调解者.
相关概念视频
Anticoagulant Drugs: Low-Molecular-Weight Heparins
702
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
702
Extrinsic and Intrinsic Pathways of Hemostasis
7.8K
Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
7.8K
Intracellular Signaling Affects Focal Adhesions
2.7K
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
2.7K
Clot Retraction and Fibrinolysis
6.0K
After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
6.0K
Formation of the Platelet Plug
6.3K
The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
6.3K
Regulation of Angiogenesis and Blood Supply
2.6K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.6K


