METHOD FOR THE PREPARATION OF A HEAT STABLE OXYGEN CARRIER-CONTAINING COMPOSITION FACILATING BETA-BETA CROSS-LINKING

Methods for preparation of a heat stable hemoglobin based oxygen-carrier-containing pharmaceutical composition such that beta-beta cross-linking is favored are provided. Using the methods of the present invention, the oxygen affinity of the resultant molecule can be controlled so that hemoglobin bas...

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Bibliographic Details
Main Authors KWOK, SUI YI, WONG, BING LOU, BUTT, KWOK CHU
Format Patent
LanguageEnglish
French
Published 07.03.2013
Subjects
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
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Summary:Methods for preparation of a heat stable hemoglobin based oxygen-carrier-containing pharmaceutical composition such that beta-beta cross-linking is favored are provided. Using the methods of the present invention, the oxygen affinity of the resultant molecule can be controlled so that hemoglobin based oxygen carriers tailored for specific applications can be produced. Lower oxygen affinity crosslinked hemoglobin is useful for applications requiring rapid tissue oxygenation (e.g. hemorrhagic shock) while higher oxygen affinity cross-linked hemoglobin is useful for applications requiring a slower rate of oxygenation (e.g. cancer adjunct therapy). A highly purified and heat stable crosslinked non-polymeric tetrameric hemoglobin having beta- beta cross-linking of greater than 40-60% and suitable for use in mammals without causing renal injury and vasoconstriction is produced. A high temperature and short time (HTST) heat processing step is performed to effectively remove any undesired dimeric hemoglobin, non- crosslinked tetrameric hemoglobin, and plasma protein impurities.
Bibliography:Application Number: CA20122844510