Streptococcaceae


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Streptococcaceae

[¦strep·tə·käk′sās·ē‚ē]
(microbiology)
A family of gram-positive cocci; chemoorganotrophs with fermentative metabolism.
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The study, conducted by the researchers at the University Children's Hospital of Basel, suggested that babies who have a wide variety of different bacteria living in their noses tend to recover more quickly from their first respiratory virus, compared to those who have less variety and more bacteria from either the Moraxellaceae or Streptococcaceae family.
The 31 isolates belonged to the order Lactobacillales, distributed in three families (Enterococcaceae, Streptococcaceae, and Lactobacillaceae), four genera (Enterococcus, Pediococcus, Streptococcus, and Lactobacillus), and in eight species of bacteria (Figure 1).
Of the 71 families uniquely related to animal farming, the top five families were Bacillaceae, Bacteroidaceae, Xanthomonadaceae, Streptococcaceae, and Lactobacillaceae (Table 4).
Streptococcaceae, SubsectionI_Family I, Lactobacillaceae, and Halomonadaceae were the dominant species in the corresponding reference soil.
The prevalence of potentially pathogenic Streptococcaceae bacteria with the reduction of beneficial bacteria in the fecal samples of patients with cirrhosis has been demonstrated earlier.
An earlier study by Hilty and colleagues, which also utilized 16S rRNA pyrosequencing, identified 58 bacterial families with Moraxellaceae, Streptococcaceae, and Pasteurellaceae as the most frequent families in nasal swab specimens from patients with AOM.
(25) With the progression of cirrhosis, it is hypothesized that the hyperammonemia and the pro-inflammatory potentiation occur via the relative reduction in autochthonous (indigenous) commensal organisms and the increase in microbes such as Enterobacteriaceae and Streptococcaceae, which can produce endotoxin and ammonia through their urease activity, respectively.
MDQ Taxonomy MJQ1 MJQ2 MJQ3 GJQ1 Bacteria 1.39 1.69 0.83 1.68 Actinobacteria* 5.51 4.69 3.76 2.56 Actinobacteria* 5.5 4.7 3.8 2.6 Pseudonocardiaceae* 2.7 2.1 1.6 1 Bacteroidetes** 0.36 0.53 0.49 0.07 Sphingobacteriia** 0.3 0.5 0.4 0.1 Firmicutes 41.63 28.69 30.46 33.51 Bacilli 41.4 28.5 30.3 33.4 Bacillaceae 13.4 5.3 9.8 18 Staphylococcaceae* 5.8 4.5 3.4 1.5 Thermoactinomycetaceae 1.6 1.4 1.3 1.5 Enterococcaceae 1.2 0.7 0.7 1 Lactobacillaceae 4.3 4.1 3.8 3.4 Leuconostocaceae 10 8.7 7.3 3 Streptococcaceae 2 1.4 1.4 1.5 Clostridia 0.2 0.2 0.2 0.1 Cyanobacteria 0.13 1.29 0.24 0.17 Chloroplast 0.1 1.3 0.2 0.2 Proteobacteria 50.86 62.95 64.07 61.91 Alphaproteobacteria 0.2 1 0.5 0.3 Betaproteobacteria 0.10.
Pseudomonadaceae dominated the middle ear microbiota while Streptococcaceae dominated tonsil microbiota.
The enumeration of mesophilic Streptococcaceae on selective media without antibiotic revealed the presence of 184 [10.sup.7] and 200 [10.sup.7] cfu/ml on M17 and Elliker media respectively.
The identified microorganisms were classified according to their morphological, tinctorial and biochemical pattern in species belonging to the families Enterobacteriaceae, Enterococcaceae, Streptococcaceae, Moraxellaceae, Aerococcaceae, Aeromonadaceae, Micrococcaceae, Pasteurellaceae, Pseudomonadaceae, Sphingomonadaceae, Burkholderiaceae and Dermacoccaceae.
At a finer taxonomic resolution, this study also shows a significant increase in potentially dangerous bacteria from the families Prevotellaceae, Enterobacteriaceae, Veillonellaceae, and Streptococcaceae in subjects with alcoholic cirrhosis, compared with subjects with hepatitis B cirrhosis and with control subjects.