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Cymbopogon citratus essential oil: effect on polymicrobial caries-related biofilm with low cytotoxicity

Overview of attention for article published in Brazilian Oral Research, November 2017
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Title
Cymbopogon citratus essential oil: effect on polymicrobial caries-related biofilm with low cytotoxicity
Published in
Brazilian Oral Research, November 2017
DOI 10.1590/1807-3107bor-2017.vol31.0089
Pubmed ID
Authors

Maria Alcionéia Carvalho de OLIVEIRA, Aline Chiodi BORGES, Fernanda Lourenção BRIGHENTI, Marcos José SALVADOR, Aline Vidal Lacerda GONTIJO, Cristiane Yumi KOGA-ITO

Abstract

The objective of this study was to evaluate the effects of Cymbopogon citratus essential oil and its main compound (citral) against primary dental colonizers and caries-related species. Chemical characterization of the essential oil was performed by gas chromatography/mass spectroscopy (GC/MS), and the main compound was determined. Antimicrobial activity was tested against Actinomyces naeslundii, Lactobacillus acidophilus, S. gordonii, S. mitis, S. mutans, S. sanguinis and S. sobrinus. Minimum inhibitory and bactericide concentrations were determined by broth microdilution assay for streptococci and lactobacilli reference, and for clinical strains. The effect of the essential oil on bacterial adhesion and biofilm formation/disruption was investigated. Negative (without treatment) and positive controls (chlorhexidine) were used. The effect of citral on preformed biofilm was also tested using the same methodology. Monospecies and microcosm biofilms were tested. ANOVA or Kruskal-Wallis tests were used (α=0.05). Cytotoxicity of the essential oil to human keratinocytes was performed by MTT assay. GC/MS demonstrated one major component (citral). The essential oil showed an inhibitory effect on all tested bacterial species, including S. mutans and L. acidophilus. Essential oil of C. citratus (10X MIC) reduced the number of viable cells of lactobacilli and streptococci biofilms (p < 0.05). The essential oil inhibited adhesion of caries-related polymicrobial biofilm to dental enamel (p < 0.01). Citral significantly reduced the number of viable cells of streptococci biofilm (p < 0.001). The essential oil showed low cytotoxicity to human keratinocytes. Based on these findings, this study can contribute to the development of new formulations for products like mouthwash, against dental biofilms.

Mendeley readers

The data shown below were compiled from readership statistics for 81 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 81 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 15 19%
Student > Master 13 16%
Student > Ph. D. Student 7 9%
Student > Postgraduate 6 7%
Researcher 4 5%
Other 12 15%
Unknown 24 30%
Readers by discipline Count As %
Medicine and Dentistry 23 28%
Immunology and Microbiology 7 9%
Biochemistry, Genetics and Molecular Biology 6 7%
Agricultural and Biological Sciences 5 6%
Nursing and Health Professions 3 4%
Other 9 11%
Unknown 28 35%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 19 December 2017.
All research outputs
#9,441,483
of 12,319,220 outputs
Outputs from Brazilian Oral Research
#79
of 140 outputs
Outputs of similar age
#220,827
of 333,669 outputs
Outputs of similar age from Brazilian Oral Research
#1
of 4 outputs
Altmetric has tracked 12,319,220 research outputs across all sources so far. This one is in the 20th percentile – i.e., 20% of other outputs scored the same or lower than it.
So far Altmetric has tracked 140 research outputs from this source. They receive a mean Attention Score of 1.9. This one is in the 41st percentile – i.e., 41% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 333,669 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 27th percentile – i.e., 27% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 4 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them