PMID- 22311630 OWN - NLM STAT- MEDLINE DCOM- 20120716 LR - 20191210 IS - 1938-2723 (Electronic) IS - 1076-0296 (Linking) VI - 18 IP - 2 DP - 2012 Mar-Apr TI - Interactions of oversulfated chondroitin sulfate (OSCS) from different sources with unfractionated heparin. PG - 166-73 LID - 10.1177/1076029611421167 [doi] AB - In 2008, oversulfated chondroitin sulfate (OSCS) was identified as the main contaminant in recalled heparin. Oversulfated chondroitin sulfate can be prepared from bovine (B), porcine (P), shark (Sh), or skate (S) origin and may produce changes in the antithrombotic, bleeding, and hemodynamic profile of heparins. This study examines the interactions of various OSCSs on heparin in animal models of thrombosis and bleeding, as well as on the anticoagulant and antiprotease effects in in vitro assays. Mixtures of 70% unfractionated heparin (UFH) with 30% OSCS from different sources were tested. In the in vitro activated partial thromboplastin time (aPTT) assay, all contaminant mixtures showed a decrease in clotting times. In addition, a significant increase in bleeding time compared to the control (UFH/saline) was observed. In the thrombosis model, no significant differences were observed. The OSCSs significantly increased anti-Xa activity in ex vivo blood samples. These results indicate that various sources of OSCS affect the hemostatic properties of heparin. FAU - Gray, Angel AU - Gray A AD - Department of Pharmacology, Loyola University Chicago, IL, USA. FAU - Litinas, Evangelos AU - Litinas E FAU - Jeske, Walter AU - Jeske W FAU - Fareed, Jawed AU - Fareed J FAU - Hoppensteadt, Debra AU - Hoppensteadt D LA - eng PT - Comparative Study PT - Journal Article DEP - 20120206 PL - United States TA - Clin Appl Thromb Hemost JT - Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis JID - 9508125 RN - 0 (Anticoagulants) RN - 0 (Factor Xa Inhibitors) RN - 0 (Fibrinolytic Agents) RN - 0 (Sulfates) RN - 0 (Tissue Extracts) RN - 9001-26-7 (Prothrombin) RN - 9002-04-4 (Factor IIa) RN - 9005-49-6 (Heparin) RN - 9007-28-7 (Chondroitin Sulfates) SB - IM MH - Animals MH - Anticoagulants/*pharmacology MH - Blood Coagulation Tests MH - Cattle MH - Chondroitin Sulfates/chemistry/isolation & purification/*pharmacology MH - *Drug Contamination MH - Drug Interactions MH - Drug Recalls MH - Factor Xa Inhibitors MH - Fibrinolytic Agents/chemistry/isolation & purification/*pharmacology/therapeutic use MH - Hemorrhage/chemically induced MH - Heparin/isolation & purification/*pharmacology/therapeutic use/toxicity MH - Jugular Veins MH - Male MH - Prothrombin/antagonists & inhibitors MH - Rats MH - Rats, Sprague-Dawley MH - Sharks MH - Skates, Fish MH - Species Specificity MH - Sulfates/analysis MH - Swine MH - Thrombosis/prevention & control MH - Tissue Extracts/chemistry EDAT- 2012/02/09 06:00 MHDA- 2012/07/17 06:00 CRDT- 2012/02/08 06:00 PHST- 2012/02/08 06:00 [entrez] PHST- 2012/02/09 06:00 [pubmed] PHST- 2012/07/17 06:00 [medline] AID - 1076029611421167 [pii] AID - 10.1177/1076029611421167 [doi] PST - ppublish SO - Clin Appl Thromb Hemost. 2012 Mar-Apr;18(2):166-73. doi: 10.1177/1076029611421167. Epub 2012 Feb 6.