Production and Chemical Processing of Low Molecular Weight Heparins

Gunay, N.S.
Linhardt, Robert J.
No Thumbnail Available
Other Contributors
Issue Date
Biology , Chemistry and chemical biology , Chemical and biological engineering , Biomedical engineering
Terms of Use
In Copyright : this Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
Full Citation
Production and Chemical Processing of Low Molecular Weight Heparins,N. S. Gunay, R.J. Linhardt, Seminars in Thrombosis and Hemostasis,25,5-16, 1999.
Heparin is an animal tissue extract that is widely used as an anticoagulant drug. A number of low molecular weight heparins (LMWHs), introduced in the past decade, are beginning to displace pharmaceutical (or compendial) grade heparins as clinical antithrombotic agents. This article describes the chemical properties of the glycosaminoglycan (GAG) heparin and how it is prepared and processed into pharmaceutical grade heparin. There are several commercially produced LMWHs that are prepared through the controlled depolymerization of pharmaceutical grade heparin. The chemistry of the commercial processes used for manufacturing LMWHs is discussed. Structural differences are found in the LMWHs prepared using different commercial processes. Careful control of process variables has generally resulted in the reproducible preparation of LMWHs that are structurally uniform and of high quality. The specifications, however, remain different for each LMWH. Thus, LMWHs are a group of similar but different drug agents. As the structural properties of LMWHs vary significantly, the bio-equivalence or inequivalence of these agents must ultimately be established by the pharmacologists and the clinicians.
Seminars in Thrombosis and Hemostasis, 25, 5-16
Note : if this item contains full text it may be a preprint, author manuscript, or a Gold OA copy that permits redistribution with a license such as CC BY. The final version is available through the publisher’s platform.
The Linhardt Research Labs.
The Shirley Ann Jackson, Ph.D. Center for Biotechnology and Interdisciplinary Studies (CBIS)
The Linhardt Research Labs Online Collection
Rensselaer Polytechnic Institute, Troy, NY