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Related Concept Videos

Glycosaminoglycans01:23

Glycosaminoglycans

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Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino sugar that can be N-acetylglucosamine or N-acetylgalactosamine, and a uronic acid that is usually glucuronic acid or iduronic acid.
GAGS are found in the extracellular matrix of vertebrates, invertebrates, and bacteria. Due to their polar nature they attract water, and serve as excellent lubricants or shock absorbers in an animal body.
Hyaluronic...
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Coagulation01:06

Coagulation

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Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
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Coagulation01:09

Coagulation

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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.
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Acids, Bases and Neutralization Reactions03:26

Acids, Bases and Neutralization Reactions

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An acid-base reaction is one in which a hydrogen ion, H+, is transferred from one chemical species to another. Such reactions are of central importance to numerous natural and technological processes, ranging from the chemical transformations within cells or lakes and oceans to the industrial-scale production of fertilizers, pharmaceuticals, and other substances essential to the society.
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Acids, Bases and Neutralization Reactions01:27

Acids, Bases and Neutralization Reactions

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Acids and bases play several important roles in biology. The pH of a biological system can significantly impact the function of biological molecules, including enzymes, proteins, and nucleic acids. For example, enzymes have optimal pH ranges for their activity, and changes in pH can denature or alter their structure, affecting their function. Acids and bases also play a crucial role in cellular signaling and communication. The pH of the extracellular fluid around cells can influence the...
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Bending of Curved Members - Neutral Surface01:16

Bending of Curved Members - Neutral Surface

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In curved beams, unlike straight beams, the stress distribution across the cross-section is not uniform due to the beam's curvature. This non-uniformity arises because the neutral axis, where stress is zero, does not align with the centroid of the section. In a curved beam, the strain varies along the section as a function of the distance from the neutral axis.
Consider the curved member described in the previous lesson. According to Hooke's law, which relates stress to strain within the...
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Related Experiment Video

Updated: Feb 11, 2026

Detection of Glycosaminoglycans by Polyacrylamide Gel Electrophoresis and Silver Staining
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Detection of Glycosaminoglycans by Polyacrylamide Gel Electrophoresis and Silver Staining

Published on: February 25, 2021

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Glycosaminoglycan Neutralization in Coagulation Control.

Amélie I S Sobczak1, Samantha J Pitt1, Alan J Stewart2

  • 1From the School of Medicine, University of St Andrews, Fife, United Kingdom.

Arteriosclerosis, Thrombosis, and Vascular Biology
|April 21, 2018
PubMed
Summary
This summary is machine-generated.

Glycosaminoglycans (GAGs) like heparin are key anticoagulants. Proteins can neutralize GAGs, affecting blood clotting and the effectiveness of anticoagulant therapies.

Keywords:
dermatan sulfateglycosaminoglycanheparan sulfateheparinthrombosis

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Area of Science:

  • Biochemistry
  • Hematology
  • Molecular Biology

Background:

  • Glycosaminoglycans (GAGs) such as heparan sulfate, dermatan sulfate, and heparin are crucial anticoagulants.
  • These GAGs inhibit clot formation by interacting with antithrombin and heparin cofactor II.
  • Heparin and its derivatives are primary clinical treatments for coagulatory disorders.

Purpose of the Study:

  • To review the neutralization of anticoagulant GAGs by various proteins.
  • To explore the molecular mechanisms regulating GAG anticoagulant activity.
  • To understand the implications for coagulation control and therapeutic efficacy.

Main Methods:

  • Literature review of GAG-protein interactions.
  • Analysis of molecular processes in GAG regulation.
  • Discussion of physiological roles of GAG-neutralizing proteins.

Main Results:

  • Numerous proteins bind and neutralize anticoagulant GAGs, promoting clot formation.
  • These interactions are vital for normal coagulation and influence heparin-based drug efficacy.
  • GAG anticoagulant activity is also regulated by synthesis reduction and degradation.

Conclusions:

  • Understanding GAG neutralization and regulation is critical for managing coagulation disorders.
  • Protein interactions with GAGs significantly impact hemostasis and anticoagulant therapy outcomes.
  • Further research into these molecular processes can optimize therapeutic strategies.