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Related Concept Videos

Introduction to Hemostasis01:05

Introduction to Hemostasis

16.3K
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,...
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Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

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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...
2.3K
Formation of the Platelet Plug01:22

Formation of the Platelet Plug

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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...
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Extrinsic and Intrinsic Pathways of Hemostasis01:20

Extrinsic and Intrinsic Pathways of Hemostasis

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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...
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Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

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Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
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Coagulation01:09

Coagulation

11.9K
The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries.
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
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Related Experiment Video

Updated: Mar 29, 2026

TAPE: A Biodegradable Hemostatic Glue Inspired by a Ubiquitous Compound in Plants for Surgical Application
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TAPE: A Biodegradable Hemostatic Glue Inspired by a Ubiquitous Compound in Plants for Surgical Application

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Dual-Functionality of Polysaccharide-based Hemostatic Powder: Effective Bleeding Control and Adhesion Reduction in

Lukasz Szymanski1,2, Patrycja Krakowiak2, Zuzanna Walas2

  • 1Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Magdalenka, Poland.

Macromolecular Bioscience
|March 27, 2026
PubMed
Summary

This study shows that 4SEAL Hemostatic Powder effectively stops bleeding and reduces postoperative adhesions in surgical models. It is a safe and biodegradable dual-function surgical tool that improves tissue healing.

Keywords:
4SEAL hemostatic powderpolysaccharide‐based hemostatpostoperative adhesionssurgical bleeding control

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Polyelectrolyte Complex for Heparin Binding Domain Osteogenic Growth Factor Delivery
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Polyelectrolyte Complex for Heparin Binding Domain Osteogenic Growth Factor Delivery

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Simple and Effective Procedure for Hemostasis in Mouse Arteries
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Simple and Effective Procedure for Hemostasis in Mouse Arteries

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Last Updated: Mar 29, 2026

TAPE: A Biodegradable Hemostatic Glue Inspired by a Ubiquitous Compound in Plants for Surgical Application
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Simple and Effective Procedure for Hemostasis in Mouse Arteries
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Simple and Effective Procedure for Hemostasis in Mouse Arteries

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Area of Science:

  • Biomaterials Science
  • Surgical Innovation
  • Regenerative Medicine

Background:

  • Postoperative adhesions are a significant complication following abdominal and pelvic surgeries, causing chronic pain, infertility, and intestinal obstruction.
  • Current barrier agents for adhesion prevention have limitations in efficacy and duration of action.
  • There is a need for advanced surgical adjuncts that offer both hemostasis and adhesion reduction.

Purpose of the Study:

  • To evaluate the dual-functionality of 4SEAL Hemostatic Powder, a polysaccharide-based medical device, for hemostasis and postoperative adhesion reduction.
  • To assess the safety and biocompatibility of 4SEAL in preclinical models.
  • To compare the efficacy of 4SEAL against hyaluronic acid and saline controls.

Main Methods:

  • Hemostatic efficacy was tested using a liver incision model in rats.
  • Anti-adhesive properties were assessed after ovariohysterectomy in rats, comparing 4SEAL (powder and gel) to hyaluronic acid and saline.
  • Histological, hematological, biochemical, and metabolic analyses were performed to evaluate safety and tissue response. Absorption profiles were studied in mice.

Main Results:

  • 4SEAL Hemostatic Powder significantly reduced the time to hemostasis compared to controls (2.14 min vs. 4.30 min).
  • 4SEAL significantly decreased both the number and severity of postoperative adhesions compared to controls (p<0.01 for number, p<0.05 for severity).
  • Histological analysis revealed enhanced tissue regeneration and reduced fibrosis in 4SEAL-treated groups, with no significant systemic toxicity observed.

Conclusions:

  • 4SEAL Hemostatic Powder demonstrates effective hemostatic properties and significantly reduces postoperative adhesion formation in preclinical models.
  • The material exhibits good biocompatibility and biodegradability, suggesting its potential as a dual-function surgical adjunct.
  • 4SEAL offers a promising solution for improving surgical outcomes by addressing both bleeding and adhesion complications.