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Anticoagulant Drugs: Low-Molecular-Weight Heparins

Anticoagulant Drugs: Low-Molecular-Weight Heparins

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...

Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants

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Oral anticoagulants are vital tools in preventing and treating blood clotting disorders. This diverse class of medications can be categorized as vitamin K antagonists, exemplified by warfarin, and direct thrombin inhibitors (DTIs), such as dabigatran, as well as factor Xa inhibitors, including rivaroxaban.
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Drug Regulation

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Related Experiment Video

Updated: May 18, 2026

Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood

Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood

Published on: October 12, 2012

The heparin recall of 2008.

K D Hedlund¹, D P Coyne, D M Sanford

¹The Michael E. DeBakey Heart Institute, Hays Medical Center, Hays, Kansas 67601, USA. khedlund@haysmed.com

|October 9, 2012

Summary

Heparin, a vital anticoagulant, faced a global recall in 2008 due to contamination with oversulfated chondroitin sulfate, causing deaths. This review covers heparin

Area of Science:

Pharmacology
Medicinal Chemistry
Public Health

Background:

Heparin, discovered in 1916, is a long-standing anticoagulant medication.
Over 15,000 research papers document heparin's effects, highlighting its clinical significance.
The complex and unknown chemical structure of heparin hinders synthetic production.

Purpose of the Study:

To review the historical discovery and development of heparin.
To investigate the 2008 heparin adulteration event and its impact.
To understand the source and nature of the oversulfated chondroitin sulfate contaminant.

Main Methods:

Historical literature review of heparin's discovery and research.
Analysis of scientific reports and investigations into the 2008 heparin recall.

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Last Updated: May 18, 2026

Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood

Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood

Published on: October 12, 2012

Through-the-Wall Blood Sampling Method to Minimize Sleep Disruption in Clinical Settings

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Surface Engineering of Pancreatic Islets with a Heparinized StarPEG Nanocoating

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Published on: June 23, 2018

Tracing the origin of the oversulfated chondroitin sulfate contaminant.

Main Results:

Heparin's discovery predates modern drug regulation.
A 2008 global heparin recall was linked to oversulfated chondroitin sulfate contamination.
The contaminant was traced to a chemical plant in Changzhou, China, causing numerous deaths and adverse events.

Conclusions:

The adulteration of heparin highlights vulnerabilities in the global pharmaceutical supply chain.
Understanding heparin's complex nature is crucial for ensuring drug safety.
Investigating contamination sources is vital for preventing future public health crises.