VIRALLY-SAFE FACTOR VIII WITH A LOW CONTENT OF HIGHER MULTIMERS

• Main Authors: CHTOUROU, ABDESSATAR, SCHMITTHAEUSLER, ROLAND, NOGRE, MICHEL
• Format: Patent
• Language: English; French
• Published: 06.05.2005
• Subjects: BEER; BIOCHEMISTRY; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMISTRY; COMPOSITIONS OR TEST PAPERS THEREFOR; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL ORENZYMOLOGICAL PROCESSES; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; ENZYMOLOGY; HUMAN NECESSITIES; HYGIENE; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEASURING; MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEICACIDS OR MICROORGANISMS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; MICROBIOLOGY; MUTATION OR GENETIC ENGINEERING; ORGANIC CHEMISTRY; PEPTIDES; PHYSICS; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; PROCESSES OF PREPARING SUCH COMPOSITIONS; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS; SPIRITS; TESTING; VINEGAR; WINE

Factor VIII composition (A) of plasma origin and free of virus is produced by filtration through a nanometer filter of nominal pore opening 15+-2 nm to 23+-2 nm and includes von Willebrand factor (vWF) with not over 15% in the form of decamers or higher multimers. Independent claims are also included for the following: (1) method for testing the viral security of a factor VIII composition of plasma origin, prepared by nanometer filtration, by determining the level of residual highly multimeric vWF; and (2) method for preparing (A) by filtration through a specified filter and determining the proportion of vWF present as decamers or higher multimers. ACTIVITY : Hemostatic. No biological data is given. MECHANISM OF ACTION : Protein replacement.