PMID- 31034083 OWN - NLM STAT- MEDLINE DCOM- 20190612 LR - 20190613 IS - 1121-7138 (Print) IS - 1121-7138 (Linking) VI - 42 IP - 2 DP - 2019 Apr TI - 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. PG - 108-113 AB - 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. FAU - Bernardi, Sara AU - Bernardi S AD - Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, Coppito 2, 67100, L'Aquila, Italy. FAU - Continenza, Maria Adelaide AU - Continenza MA AD - Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, Coppito 2, 67100, L'Aquila, Italy. FAU - Al-Ahmad, Ali AU - Al-Ahmad A AD - Department of Operative Dentistry and Periodontology, Center of Dental Medicine, Oral and Maxillofacial Surgery, Medical Center, University of Freiburg, Hugstetter Strasse, 55, 79106, Freiburg, German. FAU - Karygianni, Lamprini AU - Karygianni L AD - Department of Operative Dentistry and Periodontology, Center of Dental Medicine, Oral and Maxillofacial Surgery, Medical Center, University of Freiburg, Hugstetter Strasse, 55, 79106, Freiburg, German. AD - Clinic for Preventive Dentistry, Periodontology and Cariology, Center of Dental Medicine University of Zurich, Zurich, Switzerland. FAU - Follo, Marie AU - Follo M AD - Department of Hematology, Oncology and Stem Cell Transplantation, Core Facility, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany. FAU - Filippi, Andreas AU - Filippi A AD - Department of Oral Surgery, Oral Radiology and Oral Medicine, Center of Dental Traumatology, University Center of Dental Medicine UZB, University of Basel, Switzerland. FAU - Macchiarelli, Guido AU - Macchiarelli G AD - Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, Coppito 2, 67100, L'Aquila, Italy. LA - eng PT - Journal Article DEP - 20190429 PL - Italy TA - New Microbiol JT - The new microbiologica JID - 9516291 SB - IM MH - *Biofilms MH - *Fusobacterium nucleatum/physiology MH - *Halitosis/microbiology MH - Humans MH - In Situ Hybridization, Fluorescence MH - Microscopy, Confocal MH - *Streptococcus/physiology MH - *Tongue/microbiology OTO - NOTNLM OT - Tongue dorsum biofilm OT - confocal laser scanning microscopy (CLSM) OT - fluorescence in situ hybridization (FISH) OT - halitosis OT - oral bacteria EDAT- 2019/04/30 06:00 MHDA- 2019/06/14 06:00 CRDT- 2019/04/30 06:00 PHST- 2019/06/04 00:00 [received] PHST- 2019/06/04 00:00 [accepted] PHST- 2019/04/30 06:00 [pubmed] PHST- 2019/06/14 06:00 [medline] PHST- 2019/04/30 06:00 [entrez] AID - 496N089 [pii] PST - ppublish SO - New Microbiol. 2019 Apr;42(2):108-113. Epub 2019 Apr 29.