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Coordination of Silver Sulfadiazine with Glutathione in Aqueous Medium

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Silver sulfadiazine (Ag-SD) was introduced as an antibacterial agent for topical treatment of burns and healing of wounds. But when sliver is ingested it caused severe complication like gastro-intestinal tract damages and disturbances, convulsions and shock, which may lead to death. Glutathione, containing sulfhydryl group, has strong affinity for silver and may interact with silver. In the present study, Ellman’s method was used to investigate spectophotometrically the effects of silver sulfadiazine on glutathione under various conditions in aqueous medium. It was found that the interaction of silver with glutathione causes depletion of glutathione in aqueous medium. This effect was more pronounced with increasing concentration of silver and with extended time of incubation. The maximum decline in glutathione was also observed at physiological pH (~7.6) and temperature (37°C). This decrease in glutathione level in aqueous medium may be due to conjugation of silver with glutathione (Ag-GS conjugate). From this finding, we can conclude that glutathione has significant role in the detoxification of silver, which further suggests the use of glutathione supplement in the management of silver-related toxicity.

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Correspondence to Barkat Ali Khan.

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Khan, H., Khan, M.F. & Khan, B.A. Coordination of Silver Sulfadiazine with Glutathione in Aqueous Medium. Pharm Chem J 48, 269–272 (2014).

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