FIELD: medicine, pharmaceutics.
SUBSTANCE: invention refers to pharmacology and medicine and represents urate oxidase (uricase) conjugates for reduction in high uric acid levels in fluids and tissues of a mammal body, containing purified uricase and polyethylene glycol (PEG) in which at least 90% of said uricase represents a tetramer, and each subunit of said uricase is covalently bound with in average at most 12 polyethylene glycol filaments having a molecular weight approximately from 5 kDa to approximately 100 kDa.
EFFECT: invention provides elimination of urate oxidase immunogenicity with no impairment of uric acid decomposition activity.
31 cl, 12 ex, 1 tbl, 17 dwg
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