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Issue 38, 2013
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Polyvinyl alcohol-based hydrogel dressing gellable on-wound via a co-enzymatic reaction triggered by glucose in the wound exudate

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Abstract

Glucose is a common component of body fluids. We describe a hydrogel wound dressing that can be obtained by pouring an aqueous solution of a polyvinyl alcohol derivative possessing phenolic hydroxyl moieties (PVA-Ph), containing glucose oxidase (GOx) and horseradish peroxidase (HRP), onto a wound. The in situ hydrogelation progresses through GOx-catalysed hydrogen peroxide (H2O2) generation from glucose in the wound exudate and HRP-catalysed cross-linking between phenolic hydroxyl moieties in PVA-Ph by consuming the H2O2. The potency as a wound dressing is demonstrated by experiments which reveal that the existence of the conditions inducing hydrogelation within 20 s at normal blood glucose concentration, the durability of the resultant hydrogels to compression and stretching, and the faster closure of full-thickness wounds created on rats treated with the in situ formed hydrogel than those treated by a commercially available hydrogel dressing.

Graphical abstract: Polyvinyl alcohol-based hydrogel dressing gellable on-wound via a co-enzymatic reaction triggered by glucose in the wound exudate

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Publication details

The article was received on 03 Jun 2013, accepted on 26 Jul 2013 and first published on 29 Jul 2013


Article type: Paper
DOI: 10.1039/C3TB20780C
J. Mater. Chem. B, 2013,1, 5067-5075

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    Polyvinyl alcohol-based hydrogel dressing gellable on-wound via a co-enzymatic reaction triggered by glucose in the wound exudate

    S. Sakai, M. Tsumura, M. Inoue, Y. Koga, K. Fukano and M. Taya, J. Mater. Chem. B, 2013, 1, 5067
    DOI: 10.1039/C3TB20780C

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