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Open AccessArticle

Methylcellulose Hydrogel with Melissa officinalis Essential Oil as a Potential Treatment for Oral Candidiasis

1
Microbiology at Interfaces, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester M1 5GD, UK
2
Department of Materials, School of Natural Sciences, The University of Manchester, Manchester M13 9PL, UK
3
School of Dentistry, School of Dentistry, Cardiff University, Cardiff CF14 4XY, UK
*
Author to whom correspondence should be addressed.
Microorganisms 2020, 8(2), 215; https://doi.org/10.3390/microorganisms8020215
Received: 24 January 2020 / Accepted: 5 February 2020 / Published: 6 February 2020
(This article belongs to the Special Issue Oral Biofilms)
Candida spp. are the most prevalent fungi of the human microbiota and are opportunistic pathogens that can cause oral candidiasis. Management of such infections is limited due to the low number of antifungal drugs available, their relatively high toxicity and the emergence of antifungal resistance. Therefore, much interest in the antimicrobial potential of natural compounds has recently been evident. The use of hydrogels in the delivery of biocides has been explored due to their biocompatibility, ease with drug encapsulation, and due to their potential to confer mechanical and structural properties similar to biological tissue. Methylcellulose hydrogels (10% (w/v)) with 1% (v/v) and 2% (v/v) Melissa officinalis oil were synthesised. The rheological properties and gelation time of the hydrogels were evaluated. Antimicrobial action, the antifungal potential and ability to displace Candida were determined. Rheological tests revealed that the hydrogel jellified in three minutes at 37 °C. Loaded hydrogels successfully inhibited Candida albicans growth as evident by zone of inhibition and time-kill assays. A significant reduction in retained C. albicans was demonstrated with the hydrogel at 2% Melissa officinalis concentration. This work demonstrated that an essential oil-loaded hydrogel had the potential to provide a novel antimicrobial therapy for the treatment of oral candidiasis. View Full-Text
Keywords: hydrogel; essential oil; oral candidiasis; rheology; antifungal activity; melissa oil hydrogel; essential oil; oral candidiasis; rheology; antifungal activity; melissa oil
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Serra, E.; Saubade, F.; Ligorio, C.; Whitehead, K.; Sloan, A.; Williams, D.W.; Hidalgo-Bastida, A.; Verran, J.; Malic, S. Methylcellulose Hydrogel with Melissa officinalis Essential Oil as a Potential Treatment for Oral Candidiasis. Microorganisms 2020, 8, 215.

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