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oral biofilm infections

Investigating the biological properties of carbohydrate derived fulvic acid (CHD-FA) as a potential novel therapy for the management of oral biofilm infections

  • Leighann Sherry,
  • Emma Millhouse,
  • David F Lappin,
  • Colin Murray,
  • Shauna Culshaw,
  • Christopher J Nile and
  • Gordon RamageEmail author

BMC Oral Health201313:47https://doi.org/10.1186/1472-6831-13-47
©  Sherry et al.; licensee BioMed Central Ltd. 2013
Received: 11 June 2013
Accepted: 23 September 2013
Published: 24 September 2013
Open Peer Review reports

Abstract


Background
​A number of oral diseases, including periodontitis, derive from microbial biofilms and are associated with increased antimicrobial resistance. Despite the widespread use of mouthwashes being used as adjunctive measures to control these biofilms, their prolonged use is not recommended due to various side effects. Therefore, alternative broad-spectrum antimicrobials that minimise these effects are highly sought after. Carbohydrate derived fulvic acid (CHD-FA) is an organic acid which has previously demonstrated to be microbiocidal against Candida albicans biofilms, therefore, the aims of this study were to evaluate the antibacterial activity of CHD-FA against orally derived biofilms and to investigate adjunctive biological effects.

Methods

Minimum inhibitory concentrations were evaluated for CHD-FA and chlorhexidine (CHX) against a range of oral bacteria using standardised microdilution testing for planktonic and sessile. Scanning electron microscopy was also employed to visualise changes in oral biofilms after antimicrobial treatment. Cytotoxicity of these compounds was assessed against oral epithelial cells, and the effect of CHD-FA on host inflammatory markers was assessed by measuring mRNA and protein expression.

Results

CHD-FA was highly active against all of the oral bacteria tested, including Porphyromonas gingivalis, with a sessile minimum inhibitory concentration of 0.5%. This concentration was shown to kill multi-species biofilms by approximately 90%, levels comparable to that of chlorhexidine (CHX). In a mammalian cell culture model, pretreatment of epithelial cells with buffered CHD-FA was shown to significantly down-regulate key inflammatory mediators, including interleukin-8 (IL-8), after stimulation with a multi-species biofilm.
​
Conclusions

Overall, CHD-FA was shown to possess broad-spectrum antibacterial activity, with a supplementary function of being able to down-regulate inflammation. These properties offer an attractive spectrum of function from a naturally derived compound, which could be used as an alternative topical treatment strategy for oral biofilm diseases. Further studies in vitro and in vivo are required to determine the precise mechanism by which CHD-FA modulates the host immune response.

Keywords

Fulvic acid - Chlorhexidine - Biofilm - Antibacterial - Periodontitis - Inflammation


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  • Home
  • Disease
    • Diabetes
    • Dementia
  • Virus
    • Cell >
      • Cell Mutation
      • Cell Regeneration
    • HIV >
      • HIV Study
      • Human immunodeficiency virus (HIV)
    • HPV >
      • Human papillomavirus (HPV)
    • Influenza "Flu" "Colds" >
      • Three Influenza Viruses
  • Body
    • Arthritis
    • Gut Health >
      • Acid Reflux
    • Immune >
      • Immune System
      • Dirtying Up Our Diets
    • Inflammation >
      • Symptoms of Inflammation: Can It Kill?
      • osteoarthrosis patients
      • Anti-Inflammatory
    • Oral Health >
      • Oral Biofilm Infections
    • Stress >
      • Stress Management
    • Skin >
      • Eczema
      • Psoriasis
    • Detox >
      • Books
    • Brain >
      • Fulvic & Alzheimer´s
  • Energy
    • Energy
    • Energy Testimonial
  • Media
    • Audio >
      • Humic Fulvic Acids
    • Video >
      • Video: Explanation Fulvic & Humic
      • NRP Fulvic 'The Quest for cures"
      • How to live to be 100+
      • Fulvic Acid
    • Books
  • Exercise
    • Bodybuilding
    • Sports & Fulvic
  • NPR Fulvic FAQ's
    • NRP Fulvic Acid's FAQs
    • The Quick List: Benefits Of NRP FULVIC
    • DEFINITIONS
    • AROUND THE WORLD
    • Farming, Humic & Fulvic