Document 0268 DOCN M9440268 TI Size-exclusion chromatographic determination of dextran sulfate in rat serum. DT 9404 AU Maderich AB; Sugita ET; Philadelphia College of Pharmacy and Science, PA 19104-4495. SO J Chromatogr. 1993 Oct 22;620(1):137-42. Unique Identifier : AIDSLINE MED/94149088 AB A sensitive and selective method for the determination of dextran sulfate in rat serum has been developed. The analysis is suitable for quantitation of the drug and for monitoring molecular mass changes occurring during biotransformation. Dextran sulfate is resolved from higher molecular mass serum components by high-performance aqueous size-exclusion chromatography. The method has been validated for the direct injection of serum. Sensitive detection is achieved by post-column reaction of the polyanionic drug with the dye 1,9-dimethylmethylene blue. Components of serum which inhibit complex formation are separated chromatographically from dextran sulfate. Absorbance of the metachromatic complex is monitored at 525 nm. DE Animal Antiviral Agents/*BLOOD *Chromatography, Gel Chromatography, High Pressure Liquid/*METHODS/STATISTICS & NUMER DATA Dextran Sulfate/*BLOOD Hydrogen-Ion Concentration HIV-1/DRUG EFFECTS Male Molecular Weight Osmolar Concentration Rats Rats, Sprague-Dawley Sensitivity and Specificity Spectrophotometry JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).