Recent Advances in Hemostasis at the Nanoscale
Xiao-Xiong Wang1, Qi Liu1, Jin-Xia Sui1
1Collaborative Innovation Center for Nanomaterials & Devices, College of Physics, Qingdao University, Qingdao, 266071, China.
Advanced Healthcare Materials
|November 8, 2019
Summary
New nanohemostatic materials offer superior adhesion and designability over traditional methods. This review explores advanced designs like polypeptide assembly and nanochitosan for improved hemostasis in clinical and battlefield settings.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Medical Engineering
Background:
- Traditional hemostatic materials have limitations in designability and effectiveness.
- Rapid and effective hemostasis is crucial in both emergency medical care and surgical settings.
- The emergence of nanohemostasis offers novel solutions with enhanced properties.
Purpose of the Study:
- To review current hemostatic methods and materials.
- To introduce cutting-edge nanohemostatic materials and their applications.
- To discuss the advantages, working mechanisms, challenges, and future prospects of nanohemostasis.
Main Methods:
- Literature review of hemostatic materials and nanohemostasis.
- Summarization of current hemostatic techniques.
- Analysis of advanced nanohemostatic designs including polypeptide assembly, electrospun cyanoacrylate, and nanochitosan.
Main Results:
- Nanomaterials demonstrate superior adhesion, versatility, and designability compared to traditional hemostats.
- Specific nanohemostatic strategies like polypeptide assembly and nanochitosan show significant potential.
- Key advantages and working mechanisms of these advanced materials are detailed.
Conclusions:
- Nanohemostasis represents a significant advancement over conventional hemostatic approaches.
- Nanomaterials provide a versatile platform for developing highly effective and customizable hemostatic agents.
- Further research into nanohemostasis holds promise for revolutionizing bleeding control in diverse medical applications.
Related Concept Videos
Extrinsic and Intrinsic Pathways of Hemostasis
11.6K
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...
11.6K
Introduction to Hemostasis
12.9K
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,...
12.9K
Anticoagulant Drugs: Low-Molecular-Weight Heparins
1.6K
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...
1.6K
Formation of the Platelet Plug
8.5K
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...
8.5K
Clot Retraction and Fibrinolysis
8.2K
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.
8.2K


