Streptococcus spp. and Fusobacterium nucleatum in tongue dorsum biofilm from halitosis patients : a fluorescence in situ hybridization (FISH) and confocal laser scanning microscopy (CLSM) study

The present study involved a qualitative and quantitative evaluation of tongue dorsum biofilms sampled from halitosis patients and healthy volunteers. The aim of the study was to quantify the distribution of Streptococcus spp. and Fusobacterium nucleatum within the oral halitosis biofilm in order to highlight the role of these bacterial members in halitosis. Tongue plaque samples from four halitosis-diagnosed patients and four healthy volunteers were analyzed and compared. The visualization and quantification of the tongue dorsum biofilm was performed combining fluorescence in situ hybridization (FISH) and confocal laser scanning microscopy (CLSM). Eubacteria, Streptococcus spp. and Fusobacterium nucleatum were stained using specific fluorescent probes. For a comparison of the two tested biofilm groups the Wilcoxon rank-sum test was used. Morphological analysis by CLSM illustrated the distribution of the species which were tracked. Streptococcus spp. appeared to be enclosed within the samples and always associated to F. nucleatum. Furthermore, compared to the control group the biofilm within the halitosis group contained significantly higher proportions of F. nucleatum and Streptococcus spp., as revealed by the FISH and CLSM-analysis. The total microbial load and relative proportions of F. nucleatum and Streptococcus spp. can be considered as causative factors of halitosis and thus, as potential treatment targets.

Medienart:

Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:42

Enthalten in:

The new microbiologica - 42(2019), 2 vom: 06. Apr., Seite 108-113

Sprache:

Englisch

Beteiligte Personen:

Bernardi, Sara [VerfasserIn]
Continenza, Maria Adelaide [VerfasserIn]
Al-Ahmad, Ali [VerfasserIn]
Karygianni, Lamprini [VerfasserIn]
Follo, Marie [VerfasserIn]
Filippi, Andreas [VerfasserIn]
Macchiarelli, Guido [VerfasserIn]

Themen:

Confocal laser scanning microscopy (CLSM)
Fluorescence in situ hybridization (FISH)
Halitosis
Journal Article
Oral bacteria
Tongue dorsum biofilm

Anmerkungen:

Date Completed 12.06.2019

Date Revised 13.06.2019

published: Print-Electronic

Citation Status MEDLINE

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM296539422