Nowadays, dental diseases are one of the most common illnesses in the world. Some of them can lead to translocation of oral bacteria to the bloodstream causing intermittent bacteraemia. Therefore, a potential association between oral infection and cardiovascular diseases has been discussed in recent years as a result of adhesion of oral microbes to the heart valves. The aim of this study was to detect oral bacteria on pathologically changed heart valves not caused by infective endocarditis. In the study, patients with pathologically changed heart valves were involved. Samples of heart valves removed during heart valve replacement surgery were cut into two parts. One aliquot was cultivated aerobically and anaerobically. Bacterial DNA was extracted using Ultra-Deep Microbiome Prep (Molzym GmbH, Bremen, Germany) followed by a 16S rRNA gene PCR amplification using Mastermix 16S Complete kit (Molzym GmbH, Bremen, Germany). Positive PCR products were sequenced and the sequences were analyzed using BLAST database ( http://www.ncbi.nlm.nih/BLAST ). During the study period, 41 samples were processed. Bacterial DNA of the following bacteria was detected in 21 samples: Cutibacterium acnes (formerly Propionibacterium acnes) (n = 11; 52.38% of patients with positive bacterial DNA detection), Staphylococcus sp. (n = 9; 42.86%), Streptococcus sp. (n = 1; 4.76%), Streptococcus sanguinis (n = 4; 19.05%), Streptococcus oralis (n = 1; 4.76%), Carnobacterium sp. (n = 1; 4.76%), Bacillus sp. (n = 2; 9.52%), and Bergeyella sp. (n = 1; 4.76%). In nine samples, multiple bacteria were found. Our results showed significant appearance of bacteria on pathologically changed heart valves in patients with no symptoms of infective endocarditis.

• MeSH
• amplifikace genu * MeSH
• Bacteria klasifikace   genetika   MeSH
• bakteriální endokarditida mikrobiologie   mortalita   patologie   terapie   MeSH
• chirurgická náhrada chlopně metody   MeSH
• DNA bakterií * MeSH
• lidé středního věku MeSH
• lidé MeSH
• polymerázová řetězová reakce MeSH
• RNA ribozomální 16S * MeSH
• sekvenční analýza DNA MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• srdeční chlopně mikrobiologie   patologie   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• DNA bakterií * MeSH
• RNA ribozomální 16S * MeSH

Complete 16S rRNA sequences were determined of recently proposed new species of treponemes designated strain S and T. Sequence comparison indicated that both species belong to the Treponema saccharophilum cluster, having thus at least 5 cultivable representatives. Phylogenetic analysis of available GenBank 16S rRNA sequences revealed two phylogenetically distant treponema clusters (T. saccharophilum cluster and T. bryantii cluster). Surprisingly, while among cultivated treponemes dominate T. saccharophilum cluster members, detailed analysis showed that all treponema-like sequences obtained by culture independent 16S rRNA methods belong to the T. bryantii cluster, from which only two cultivable representatives have so far been known. Meta-analysis of available data revealed that treponemes are an infrequent and minor group of bacteria, representing less than 2.4% of total rumen bacteria.

• MeSH
• bachor mikrobiologie   MeSH
• DNA bakterií chemie   genetika   MeSH
• fylogeneze MeSH
• molekulární sekvence - údaje MeSH
• počet mikrobiálních kolonií MeSH
• přežvýkavci mikrobiologie   MeSH
• ribozomální DNA chemie   genetika   MeSH
• RNA ribozomální 16S genetika   MeSH
• sekvenční analýza DNA MeSH
• shluková analýza MeSH
• Treponema klasifikace   izolace a purifikace   MeSH
• zvířata MeSH
• Check Tag
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• DNA bakterií MeSH
• ribozomální DNA MeSH
• RNA ribozomální 16S MeSH