Carbohydrate derived fulvic acid: an in vitro investigation of a novel membrane active antiseptic agent against Candida albicans biofilms

Leighann Sherry, Anto Jose, Colin Murray, Craig Williams, Brian Jones, Owain Millington, Jeremy Bagg, Gordon Ramage

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Carbohydrate derived fulvic acid (CHD-FA) is a heat stable low molecular weight, water soluble, cationic, colloidal material with proposed therapeutic properties. The aim of this study was to evaluate the antifungal activity of CHD-FA against Candida albicans, and to characterize its mode of action. A panel of C. albicans isolates (n = 50) derived from a range of clinical specimens were grown planktonically and as biofilms, and the minimum inhibitory concentrations determined. Scanning electron microscopy was performed to examine ultrastructural changes and different cell membrane assays were used to determine its mode of action. In addition, the role of C. albicans biofilm resistance mechanisms were investigated to determine their effects on CHD-FA activity. CHD-FA was active against planktonic and sessile C. albicans at concentrations 0.125 and 0.25% respectively, and was shown to be fungicidal, acting through disruption of the cell membrane activity. Resistance mechanisms, including matrix, efflux, and stress, had a limited role upon CHD-FA activity. Overall, based on the promising in vitro spectrum of activity and minimal biofilm resistance of the natural and cheap antiseptic CHD-FA, further studies are required to determine its applicability for clinical use.
LanguageEnglish
Article number116
Number of pages8
JournalFrontiers in Microbiology
Volume3
DOIs
Publication statusPublished - 29 Mar 2012

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Local Anti-Infective Agents
Biofilms
Candida albicans
Carbohydrates
Membranes
Cell Membrane
Microbial Sensitivity Tests
Innate Immunity
Electron Scanning Microscopy
fulvic acid
In Vitro Techniques
Hot Temperature
Molecular Weight
Water

Keywords

  • candida albicans
  • fulvic acid
  • in vitro investigation

Cite this

Sherry, Leighann ; Jose, Anto ; Murray, Colin ; Williams, Craig ; Jones, Brian ; Millington, Owain ; Bagg, Jeremy ; Ramage, Gordon. / Carbohydrate derived fulvic acid : an in vitro investigation of a novel membrane active antiseptic agent against Candida albicans biofilms. In: Frontiers in Microbiology. 2012 ; Vol. 3.
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Carbohydrate derived fulvic acid : an in vitro investigation of a novel membrane active antiseptic agent against Candida albicans biofilms. / Sherry, Leighann; Jose, Anto; Murray, Colin; Williams, Craig; Jones, Brian; Millington, Owain; Bagg, Jeremy; Ramage, Gordon.

In: Frontiers in Microbiology, Vol. 3, 116, 29.03.2012.

Research output: Contribution to journalArticle

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