Fluorescent in situ hybridization with specific DNA probes offers adequate detection of Enterococcus faecalis and Enterococcus faecium in clinical samples

2005 ◽  
Vol 54 (10) ◽  
pp. 937-944 ◽  
Author(s):  
Karola Waar ◽  
John E Degener ◽  
Marja J van Luyn ◽  
Hermie JM Harmsen
Keyword(s):  
In Situ Hybridization ◽  
Enterococcus Faecalis ◽  
Enterococcus Faecium ◽  
Fluorescent In Situ Hybridization ◽  
Dna Probes ◽  
Clinical Samples

Identification of the origin of centromeres in whole-arm translocations using fluorescent in situ hybridization with α-satellite DNA probes

1991 ◽  
Vol 40 (1) ◽  
pp. 117-120 ◽  
Author(s):  
Avirachan T. Tharapel ◽  
Mazin B. Qumsiyeh ◽  
Paula R. Martens ◽  
Sugandhi A. Tharapel ◽  
James D. Dalton ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Satellite Dna ◽  
Fluorescent In Situ Hybridization ◽  
Dna Probes

scholarly journals DETECTION AND QUANTITATION OF RED COMPLEX BACTERIA IN SUBGINGIVAL PLAQUE BY USING FLUORESCENT IN SITU HYBRIDIZATION (FISH)

2017 ◽  
Vol 5 (11) ◽  
pp. 279-289
Author(s):  
Kishore G. Bhat ◽  
Aradhana Chhatre ◽  
Vijay M. Kumbar ◽  
Manohar S. Kugaji ◽  
Sanjeevani Patil
Keyword(s):  
In Situ Hybridization ◽  
Diagnostic Tool ◽  
Fluorescent In Situ Hybridization ◽  
High Sensitivity ◽  
Clinical Samples ◽  
Subgingival Plaque ◽  
Periodontal Pathogens ◽  
Significant Difference ◽  
Strong Linear Relationship

Motivation/Background: Red complex bacteria are proven periodontal pathogens. In dentistry, there is a need to identify and quantitate the organisms from the diseased sites quickly and reliably. Since culture requires several days, molecular methods are being used frequently to detect these bacteria.  Among them, Fluorescent in situ hybridization (FISH) is rapid, sensitive and quantitative. An attempt is made here to evaluate the applicability of this technique as a diagnostic tool in periodontology. Method: Subgingival plaque was collected from participants, fixed with paraformaldehyde and subjected to FISH. Fluorescently labeled oligonucleotide probes were used for hybridization. After the procedure, the fluorescently stained bacteria were identified and counted from the smear and quantitated using a simple grading. Results: There was a significant difference in the prevalence and numbers of red complex bacteria in healthy and diseased subjects. A strong linear relationship existed between P. gingivalis, T. forsythia and T. denticola. Conclusions: The procedure used in the study is simple, rapid and can be easily adaptable. It also has a high sensitivity and has the ability to detect a single bacterial cell. The method can be directly applied to the clinical samples and can be used as a rapid diagnostic tool in periodontics.

scholarly journals Specific and Rapid Detection by Fluorescent In Situ Hybridization of Bacteria in Clinical Samples Obtained from Cystic Fibrosis Patients

2000 ◽  
Vol 38 (2) ◽  
pp. 818-825 ◽  
Author(s):  
Michael Hogardt ◽  
Karlheinz Trebesius ◽  
Anna M. Geiger ◽  
Mathias Hornef ◽  
Josef Rosenecker ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
In Situ Hybridization ◽  
Rapid Detection ◽  
Burkholderia Cepacia ◽  
Fluorescent In Situ Hybridization ◽  
Clinical Samples ◽  
Microbial Culture ◽  
Specific Detection ◽  
Pulmonary Exacerbations

We report on the rapid and specific detection of bacteria commonly isolated from clinical specimens from cystic fibrosis (CF) patients by fluorescent in situ hybridization (FISH). On the basis of comparative sequence analysis, we designed oligonucleotide probes complementary to species-specific 16S rRNA regions of these microorganisms and demonstrated the specificities of the probes by hybridization of different remotely related as well as closely related reference strains. Furthermore, in a pilot project we investigated 75 sputum samples and 10 throat swab specimens from CF patients by FISH and detected Pseudomonas aeruginosa, Burkholderia cepacia, Stenotrophomonas maltophilia,Haemophilus influenzae, and Staphylococcus aureus within these specimens. The specificity of FISH was 100% in comparison to the results of conventional microbial culture. In contrast, the sensitivity of standard laboratory cultivation was moderately higher, since the limit for microscopic detection of bacteria within sputum samples by FISH was approximately 4 × 105 CFU/ml of sputum (resulting in a 90% sensitivity for FISH). Moreover, we demonstrated that FISH will be useful for the rapid detection of bacteria that cause acute pulmonary exacerbations in CF patients, as demonstrated in patients with H. influenzae, S. aureus, andP. aeruginosa exacerbations. Therefore, FISH is a valuable additional method for the rapid and specific detection of bacteria in clinical samples from CF patients, in particular, patients with pulmonary exacerbations.

Sign in / Sign up

Export Citation Format

Share Document