C - Chemistry – Metallurgy – 07 – K
Patent
C - Chemistry, Metallurgy
07
K
C07K 1/36 (2006.01) A61L 24/04 (2006.01) A61L 24/10 (2006.01) C07K 14/78 (2006.01) C12N 9/10 (2006.01) A61K 38/00 (2006.01) A61L 25/00 (1990.01)
Patent
CA 2113660
The present invention relates to a process of making a concentrate of coagulation proteins starting with whole human or animal plasma. This concentrate is used as a biological adhesive when extemporaneously mixed to thrombin. The concentrated proteins include mostly fibrinogen, fibrin stabilizing factor (factor XIII) and fibronectin. The claimed process has the advantage of being short of execution while providing an excellent yield of coagulable protein. No protease inhibitor has to be added during the process. The process involves steps of separation by "salting-out" in presence of amino-6 hexanoic acid which prevents co-precipitation of plasminogen with the desired coagulable proteins. The proteins so obtained are very stable after reconstitution in water for at least 24 hours at room or body temperature. After mixing with thrombin and calcium, the adhesive shows excellent strength and biocompatibility.
Bui-Khac Trung
Lavoie Lise
Michel St Picq Dominique
Angiotech Florida Holdings Inc.
Heenan Blaikie Llp
LandOfFree
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