对于P-选择素和补充在生殖基质出血的病理后果中的作用
Devin Hatchell1,2, Mohammed Alshareef3, Tyler Vasas4
1Department of Neurological Surgery, Medical University of South Carolina, Charleston, SC, 29425, USA.
Journal of neuroinflammation
|June 15, 2023
概括
用补充抑制剂向P-选择素可以减少早产婴儿的生殖基质出血 (GMH) 并发症. 这种方法可以缓解水脑和神经认知缺陷,为GMH提供了一个有前途的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 新生儿医学 新生儿医学
背景情况:
- 生殖母体出血 (GMH) 是早产婴儿的一种严重疾病.
- 转基因脑膜炎往往导致水头,周周结膜性白血病和神经认知缺陷.
- 在GMH之后,P-选择因在血管上表达.
研究的目的:
- 研究用补充物抑制向P-选择素以减轻GMH后续的研究.
- 开发融合蛋白,将抗-P-选择因抗体与补充抑制剂Crry联系起来.
- 评估这些构造的治疗潜力在GMH的小鼠模型中.
主要方法:
- 创造了两个融合蛋白:2.3Psel-Crry (结合P-选择素) 和2.12Psel-Crry (阻断P-选择素).
- 在P4小鼠中诱导了心室内出血.
- 小鼠接受了2.3Psel-Crry,2.12Psel-Crry或载体的治疗,并评估了结果.
主要成果:
- 2.3Psel-Crry治疗减少了病变大小,死亡率,脑水和神经缺陷.
- 2.3Psel-Crry降低了P-选择因表达,补充激活和微质分裂.
- 2.12Psel-Crry治疗恶化了结果,干扰了凝血和血小板-白细胞聚合.
结论:
- 用补充抑制剂 (2.3Psel-Crry) 向P-选择素可以防止GMH病理.
- 由于凝血干扰,一个双功能结构 (2.12Psel-Crry) 恶化了结果.
- 向补充抑制显示了GMH和相关疾病的治疗潜力.
相关概念视频
Formation of the Platelet Plug
6.7K
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...
6.7K
Introduction to Hemostasis
8.4K
Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized,...
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized,...
8.4K
Extrinsic and Intrinsic Pathways of Hemostasis
8.4K
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...
8.4K
Complement System
2.5K
The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
2.5K
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
6.5K
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.
6.5K


