Influence of Environmental Factors on Salivary Microbiota and Their Metabolic Pathway: Next-Generation Sequencing Approach

2022 ◽  
Author(s):  
Wei Zhang ◽  
Tao Qi ◽  
Lihe Yao ◽  
Wei Wang ◽  
Fanrong Yu ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Environmental Factors ◽  
Metabolic Pathway ◽  
Next Generation ◽  
Salivary Microbiota ◽  
Generation Sequencing

scholarly journals Impact of Oral Hygiene Discontinuation on Supragingival and Salivary Microbiomes

2017 ◽  
Vol 3 (1) ◽  
pp. 57-64 ◽  
Author(s):  
D. Belstrøm ◽  
M.L. Sembler-Møller ◽  
M.A. Grande ◽  
N. Kirkby ◽  
S.L. Cotton ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Relative Abundance ◽  
Oral Hygiene ◽  
Biofilm Formation ◽  
Next Generation ◽  
Streptococcus Species ◽  
Supragingival Plaque ◽  
Salivary Microbiota ◽  
Compositional Changes ◽  
Generation Sequencing

The purpose of the present study was to characterize and compare supragingival and salivary microbiotas during a 10-d period of oral hygiene discontinuation. We tested the hypothesis that the composition of the salivary microbiota will reflect local microbial changes associated with accumulated biofilm formation and maturation. Pooled supragingival plaque ( n = 145) and stimulated saliva ( n = 145) samples were collected and plaque and gingival indices were recorded from 29 orally healthy individuals at baseline, during oral hygiene discontinuation (days 4, 7, and 10), and 14 d after resumption of oral hygiene. Supragingival and salivary microbiotas were processed by next-generation sequencing (Human Oral Microbe Identification using Next Generation Sequencing) and microbial community profiles were compared. Microbial composition of supragingival plaque samples collected after 4, 7, and 10 d of oral hygiene discontinuation, as well as 14 d after reuptake of oral hygiene, differed significantly from baseline samples, by a 3-fold increase in relative abundance Leptotrichia species and a 2-fold decrease in Streptococcus species (adjusted P < 0.01). In saliva samples, a significant increase in relative abundance of Leptotrichia species (adjusted P < 0.01) was evident at day 7 but completely reversed 14 d after resumption of oral hygiene. While the salivary microbiota was resistant to accumulated local biofilm formation, data from this study showed that compositional changes of supragingival microbiotas were not reversed 14 d after resumption of oral hygiene, despite the restoration of plaque to baseline levels. ( ClinicalTrials.gov UCPH_OI_002, NCT02913235). Knowledge Transfer Statement: Data from this study showed compositional changes of supragingival microbiotas as a consequence of a 10-d period of oral hygiene discontinuation, that was not reversed 14 d after resumption of oral hygiene. Notably, oral hygiene discontinuation was associated with a significant increase in relative abundance of potential cariogenic Leptotrichia species and a decrease in Streptococcus species. Thus, findings from this study highlight the necessity of regular oral hygiene in the maintenance of oral homeostasis.

Next-Generation Sequencing

2012 ◽  
Vol 42 (9) ◽  
pp. 8
Author(s):  
PETER HULICK
Keyword(s):  
Next Generation Sequencing ◽  
Next Generation ◽  
Generation Sequencing

Labordiagnostik bei gastrointestinalen Tumoren

2020 ◽  
Vol 11 (05) ◽  
pp. 232-238
Author(s):  
Marcus Kleber
Keyword(s):  
Next Generation Sequencing ◽  
Kolorektales Karzinom ◽  
Next Generation ◽  
Generation Sequencing

ZUSAMMENFASSUNGDas kolorektale Karzinom (KRK) ist einer der häufigsten malignen Tumoren in Deutschland. Einer frühzeitigen Diagnostik kommt große Bedeutung zu. Goldstandard ist hier die Koloskopie. Die aktuelle S3-Leitlinie Kolorektales Karzinom empfiehlt zum KRK-Screening den fäkalen okkulten Bluttest. Für das Monitoring von Patienten vor und nach Tumorresektion werden die Messung des Carcinoembryonalen Antigens (CEA) und der Mikrosatellitenstabilität empfohlen. Für die Auswahl der korrekten Chemotherapie scheint derzeit eine Überprüfung des Mutationsstatus, mindestens des KRAS-Gens und des BRAF-Gens, sinnvoll zu sein. Eine Reihe an neuartigen Tumormarkern befindet sich momentan in der Entwicklung, hat jedoch noch nicht die Reife für eine mögliche Anwendung in der Routinediagnostik erreicht. Den schnellsten Weg in die breite Anwendung können Next-Generation-Sequencing-basierte genetische Tests finden.

Darstellung einer verminderten T-Zellrezeptorvariabilität bei refraktärer Zöliakie Typ II mittels Next Generation Sequencing

2014 ◽  
Vol 52 (08) ◽  
Author(s):  
M Schumann ◽  
J Ritter ◽  
K Zimmermann ◽  
JD Schulzke ◽  
B Siegmund ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Next Generation ◽  
Generation Sequencing
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