Human Isolates of Large Colony-Forming β Hemolytic Group G Streptococci form a Distinct Clade upon 16S rRNA Gene Analysis

1997 ◽  
pp. 363-365 ◽  
Author(s):  
Norbert Schnitzler ◽  
Gerhard Haase ◽  
Andreas Podbielski ◽  
Achim Kaufhold ◽  
Christoph Lämmler ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Analysis ◽  
Rrna Gene ◽  
16S Rrna Gene Analysis ◽  
Group G Streptococci ◽  
Large Colony

scholarly journals Clinical Relevance of the Microbiome in Odontogenic Abscesses

Biology ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 916
Author(s):  
Sebastian Böttger ◽  
Silke Zechel-Gran ◽  
Daniel Schmermund ◽  
Philipp Streckbein ◽  
Jan-Falco Wilbrand ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Oral Microbiome ◽  
Molecular Methods ◽  
Gene Analysis ◽  
Rrna Gene ◽  
16S Rrna Gene Analysis ◽  
Cultural Methods ◽  
Odontogenic Abscess ◽  
Polymicrobial Infections

Odontogenic abscesses are usually caused by bacteria of the oral microbiome. However, the diagnostic culture of these bacteria is often prone to errors and sometimes fails completely due to the fastidiousness of the relevant bacterial species. The question arises whether additional pathogen diagnostics using molecular methods provide additional benefits for diagnostics and therapy. Experimental 16S rRNA gene analysis with next-generation sequencing (NGS) and bioinformatics was used to identify the microbiome of the pus in patients with severe odontogenic infections and was compared to the result of standard diagnostic culture. The pus microbiome was determined in 48 hospitalized patients with a severe odontogenic abscess in addition to standard cultural pathogen detection. Cultural detection was possible in 41 (85.42%) of 48 patients, while a pus-microbiome could be determined in all cases. The microbiomes showed polymicrobial infections in 46 (95.83%) cases, while the picture of a mono-infection occurred only twice (4.17%). In most cases, a predominantly anaerobic spectrum with an abundance of bacteria was found in the pus-microbiome, while culture detected mainly Streptococcus, Staphylococcus, and Prevotella spp. The determination of the microbiome of odontogenic abscesses clearly shows a higher number of bacteria and a significantly higher proportion of anaerobes than classical cultural methods. The 16S rRNA gene analysis detects considerably more bacteria than conventional cultural methods, even in culture-negative samples. Molecular methods should be implemented as standards in medical microbiology diagnostics, particularly for the detection of polymicrobial infections with a predominance of anaerobic bacteria.

Composition of Acridid gut bacterial communities as revealed by 16S rRNA gene analysis

2008 ◽  
Vol 97 (3) ◽  
pp. 265-272 ◽  
Author(s):  
R.J. Dillon ◽  
G. Webster ◽  
A.J. Weightman ◽  
V.M. Dillon ◽  
S. Blanford ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Bacterial Communities ◽  
Gene Analysis ◽  
Rrna Gene ◽  
16S Rrna Gene Analysis

scholarly journals True Microbiota Involved in Chronic Lung Infection of Cystic Fibrosis Patients Found by Culturing and 16S rRNA Gene Analysis

2011 ◽  
Vol 49 (12) ◽  
pp. 4352-4355 ◽  
Author(s):  
V. B. Rudkjobing ◽  
T. R. Thomsen ◽  
M. Alhede ◽  
K. N. Kragh ◽  
P. H. Nielsen ◽  
...  
Keyword(s):  
Cystic Fibrosis ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Lung Infection ◽  
Gene Analysis ◽  
Rrna Gene ◽  
16S Rrna Gene Analysis ◽  
Chronic Lung Infection

DNA extraction for 16S rRNA gene analysis to determine genetic diversity in deep sediment communities

1992 ◽  
Vol 100 (1-3) ◽  
pp. 59-65 ◽  
Author(s):  
Paul A. Rochelle ◽  
John C. Fry ◽  
R. John Parkes ◽  
Andrew J. Weightman
Keyword(s):  
Genetic Diversity ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Dna Extraction ◽  
Gene Analysis ◽  
Rrna Gene ◽  
16S Rrna Gene Analysis ◽  
Deep Sediment

Chilling and cultivar type affect the diversity of bacterial endophytes colonizing sweet pepper (Capsicum anuumL.)

2006 ◽  
Vol 52 (11) ◽  
pp. 1036-1045 ◽  
Author(s):  
Frank Rasche ◽  
Robert Trondl ◽  
Christina Naglreiter ◽  
Thomas G Reichenauer ◽  
Angela Sessitsch
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Sweet Pepper ◽  
Gene Analysis ◽  
Rrna Gene ◽  
Temperature Sensitive ◽  
Bacterial Endophytes ◽  
Community Members ◽  
16S Rrna Gene Analysis ◽  
Gene Libraries

A climate chamber experiment was conducted to assay the effect of low temperatures (chilling) on the diversity of bacteria colonizing the endospheres of two thermophilic sweet pepper (Capsicum anuum L.) cultivars, Milder Spiral and Ziegenhorn Bello. Structural diversity was analyzed by 16S rRNA-based terminal restriction fragment length polymorphism (T-RFLP) analysis and by the generation of 16S rRNA gene libraries to determine dominant community members in T-RFLP profiles. Cultivable community members colonizing lines Milder Spiral and Ziegenhorn Bello were identified by 16S rRNA gene analysis. T-RFLP profiles and 16S rRNA gene libraries revealed a high heterogeneity of community composition due to chilling and suggested further the existence of cultivar-specific communities. The majority of isolates obtained from the cultivar Milder Spiral were assigned as high-G+C Gram-positive bacteria (Microbacterium sp., Micrococcus sp., Rhodococcus sp.) and Firmicutes (Staphylococcus sp.). Of the isolated endophytes obtained from cultivar Zeigenhorn Bello, 93% were affiliated with Staphylococcus aureus and Bacillus sp. (Firmicutes). The experimental set-up was suited to demonstrate that chilling and cultivar type can influence the diversity of bacterial endophytes colonizing sweet pepper. We propose additional chilling experiments to investigate the effect of chilling on functional, plant-beneficial abilities of bacterial endophytes associated with low-temperature-sensitive crops, such as sweet pepper.Key words: chilling, thermophilic sweet pepper, bacterial endophyte diversity, 16S rRNA gene analysis.

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