Self-assembled polymer vesicles in deciding action of Zn-sulfanilamide allergenicity

Drug Delivery and Translational Research
Sankar Prasad PaikKamalika Sen

Abstract

Allergic reactions to sulfonamide-based drugs are quite common; hence, medications containing sulfonamides are prescribed carefully. Metal ion complexation may block the nitrogen binding site of sulfonamide by complexation and reduce such responses. In this study, trace concentrations of Zn were found to bind with sulfanilamide at pH ∼ 1. The complexation was studied in water as well as in vesicular medium of polyethylene glycol (PEG) and a block copolymer, PPG-PEG-PPG. The binding constants (k) of Zn-sulfanilamide complex were determined in water, PEG, and PPG-PEG-PPG block copolymer media. The values suggest that complexation occurs best in water followed by PPG-PEG-PPG, PEG #4000, and PEG #12000. Though the binding constants are high in water and block copolymer media, the complex is not very stable as the absorbance value for the complex was found to decline with time. The same complex when prepared in polymer matrix shows higher stability. The results prompted us to explore the extraction possibilities of the Zn-sulfanilamide complex by using aqueous biphasic extraction systems comprising the polymers against sodium sulfate solution. The complex was analyzed for its allergenic response in different media by competitive enz...Continue Reading

References

Jun 27, 1998·Clinics in Dermatology·S Vassileva
Nov 5, 2004·Cellular and Molecular Life Sciences : CMLS·V P Torchilin
Nov 19, 2009·Advanced Drug Delivery Reviews·Jindrich Kopecek, Pavla Kopecková
Jul 26, 2012·Analytical Chemistry·Sankar Prasad PaikKamalika Sen
Sep 18, 2012·Advanced Drug Delivery Reviews·Ruth Duncan, María J Vicent
Mar 1, 2013·The Analyst·Sumanta Kumar GhatakKamalika Sen

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