Peptostreptococcus spp

Infections caused by these injuries are most often caused by the normal oral flora, which includes both aerobic and anaerobic microorganisms. The most frequent aerobic organisms are Streptococcus spp., Staphylococcus spp., and Eikenella corrodens. The most common anaerobic organisms are Fusobacterium, Prevotella, Porphyromonas, and Peptostreptococcus spp. 

Bacterial colonization of lower respiratory tract. Cigarette smoke, administered for 3 days before and after intratracheal instillation of bacterial suspension containing six bacterial species (Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumonia, Proteus mirabilis, Haemophilus influenza, Peptostreptococcus spp.) to male Wistar albino rats with or without vitamin E supplements (100 mg/kg/day), signifi-... 

The colon contains about 400 different species of anaerobic and aerobic bacteria.15 The most common anaerobes in the colon are Bifidobacterium spp., Eubacterium spp., Peptostreptococcus spp., Fusobacterium spp., and Bacteroides spp. The most common aerobe in the colon is Escherichia coli.16,17 Colonic bacteria are involved in the synthesis of B complex vitamins and a majority of vitamin K.18... 

Anaerobes (Bacteroides spp, Peptostreptococcus spp.) and facultative bacteria (streptococci, Enterobacteriaceae)... 

Gastrointenstinal tract Enterococcus spp. Peptostreptococcus spp. Lactobacillus, Clostridium Bacteroides spp. Enteric bacilli (f. coli, Klebsiella spp.) ... 

Eikenella corrodens, S. aureus, streptococci, Corynebacterium spp., Bacteroides spp., Peptostreptococcus spp. 

Brenn et al. [ 153] compared the efficacy of antibiotics commonly used in dental and oral clinical practice in application to the bacteria most frequently isolated in odontogenic infections (S. viridans, Peptostreptococcus spp, Prevotella intermedia, Porphyromona gingivalis and Fusobacterium nucleatum) based on pharmacokinetic and pharmacodynamic (PK/PD) analyses (effect of the human body upon the drug, reflected by the plasma concentration profile-pharmacokinetics, and the effect of the drug upon the body, as defined by the minimum inhibitory concentration, or MIC-pharmacodynamics). Antibiotics commonly used in dental practice, such as erythromycin, metronidazole or azithromycin, were found to be ineffective in apphcation in over 30% of the strains (39.1%, 50.5% and 33.2%, respectively) [154]. 

Microbial numbers and species diversity increases in the distal small intestine, with facultative anaerobes as well as more strict anaerobic species such as bacteroides, clostridia. Gram positive cocci and bifidobacteria reaching population levels of up to 10 colony forming units (CFU)/mL contents. The colon is the main site of microbial colonization in the gut, and the microflora is dominated by the strict anaerobes. This microflora is made up of Bacteroides spp., Eubacterium spp., Clostridium spp., Eusobacterium spp, Peptostreptococcus spp., and Bifidobacterium spp., with lower population levels of anaerobic streptococci, lactobacilli, methanogens and sulphate-reducing bacteria (Figure 6.2). Climax microbial populations occur (up to 10 cells/g) and estimates of diversity range from 400 to 500 different bacterial species. The facultative anaerobes such as lactobacilli, streptococci/enterococci and the Enterobacteriaceae occur in population levels about 100-1000-fold lower than strict anaerobes (Moore and Holdeman 1975 Conway 1995). 

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