FIELD: medicine, pharmacy, antibiotics. SUBSTANCE: water-soluble conjugate or its salt has polymixin B or its salt and dextran. It shows an anti-endotoxic activity that exceeds that of the parent polymixin B. The ratio of polymixin B IC50 value to its conjugate IC50 value is above 1.0. Invention claims the method of conjugate preparing. Polymixin B or its salt is subjected for interaction with dextran in an aqueous medium at pH from 9.3 to 10 and temperature from 30 C to 35 C. Invention claims the composition containing water-soluble conjugate. Conjugate has the enhanced anti-endotoxic activity and method exhibits the best reproducibility. Conjugate activity is 125% and above as compared with that of the natural polymixin B. Invention can be used for preparing preparations used in therapy of systemic inflammatory reaction syndrome and septic shock. EFFECT: enhanced effectiveness of conjugates. 13 cl, 3 tbl, 5 ex
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Authors
Dates
2001-03-20—Published
1996-05-24—Filed