| 摘要 |
A method of preparing a sterile and stable plasma-protein solution containing fibrinogen and Factor XIII from human blood plasma which has been stabilized with citrate, comprising treating the plasma with beta -propiolactone and irradiating it with ultraviolet light, removing the Factors II, VII, IX and X by adsorption onto anion exchangers that adsorb proteins, precipitating the companion proteins out by adding ethanol until the solution has a final concentration of about 9% by volume at -3 DEG C., centrifuging the precipitate off, dissolving the precipitate in a citrate buffer at a pH of about 6.35 and a temperature of about 37 DEG C., adjusting the protein level of the solution to about 13.3 g/l with sodium citrate solution, adding ethanol, a glycine citrate buffer, and a solution of sodium citrate to precipitate out the companion proteins, adding ethanol to the remaining solution until the solution has a final concentration of about 9% by volume at -3 DEG C., thereby precipitating fribrinogen and Factor XIII, dissolving the precipitate in a citrate buffer at a pH of about 6.35 and a temperature of about 37 DEG C., and filtering the solution.
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