Arginine Functionalized Bacterial Cellulose Nanofibers Containing Gel as an Effective Wound Dressing: In vitro and In vivo Evaluation

Author(s): Farideh Feizabadi, Mohsen Minaiyan, Azade Taheri*.

Journal Name: Current Drug Delivery

Volume 15 , Issue 6 , 2018

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Abstract:

Background: Nanofibers such as bacterial cellulose nanofibers (BC-NFs) have gained increasing attention for use in wound dressings. Topical application of arginine can stimulate wound healing significantly.

Objective: In order to promote the wound healing process, arginine functionalized BC-NFs containing gel (Arg-BC-NFs gel) was prepared by the electrostatic attachment of arginine on the surface of BCNFs.

Method: The effect of pH was evaluated on the amount of the attached arginine on the BC-NFs surface. The attachment of arginine on BC-NFs surface was investigated by FTIR spectroscopy. The morphology of Arg-BC-NFs was evaluated using FESEM. The viscosity and spreadability of Arg-BC-NFs and the release of arginine from Arg-BC-NFs were evaluated. The effectiveness of Arg-BC-NFs gel was assessed in a full thickness wound model in rats. Re-epithelization, collagen deposition and neovascularization were investigated in the wound tissues using histological and immunohistochemical analysis.

Results: FTIR spectra and the zeta potential of BC-NFs confirmed the surface modification of BC-NFs by arginine. FESEM images showed the nanofibrous structure of Arg-BC-NFs. The release of arginine from Arg-BC-NFs gel was in a sustained release manner for 24 h. The appropriate viscosity and spreadability of Arg-BC-NFs gel confirmed its easy topical application. In vivo studies revealed that Arg-BCNFs gel promoted wound closure at a faster rate than BC-NFs gel and arginine solution. Moreover, faster and more organized re-epithelialization, angiogenesis and collagen deposition were achieved in Arg-BC-NFs gel treated group in comparison to other groups.

Conclusion: Arg-BC-NFs gel can be introduced as an effective wound dressing for acute wounds.

Keywords: Bacterial cellulose nanofiber, gel, arginine, wound dressing, Arg-BC-NFs gel, FESEM.

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Article Details

VOLUME: 15
ISSUE: 6
Year: 2018
Page: [840 - 849]
Pages: 10
DOI: 10.2174/1567201815666180220100154
Price: $58

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