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Anaerobic Bacterial Strains  (gram positive and negative):

bacteria

Bacterial Strain Sections

Anaerobes (gram positive and negative):

Empiric drug regimens listed for the various bacterial strains are for ADULT patients with normal renal function. Review the relevant package insert for additional prescribing information.

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Anaerobic Gram-Negative Bacilli
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>Bacteroides fragilis (most important clinically)
    [Other Bacteroides species  - less common clinically:  (B. acidifaciens, B. gracilis,
         B. oris, B. ovatus,  B. pyogenes , B. stercoris, B. vulgatus)]
>Bacteroides melaninogenicus (reclassified and split into Prevotella melaninogenica
     and Prevotella intermedia.)
>Fusobacterium necrophorum
>Porphyromonas gingivalis



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Anaerobic Gram-Negative cocci
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Veillonella
-Veillonella parvula



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Anaerobic Gram-positive cocci
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Peptostreptococcus species


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Anaerobic Gram-positive bacilli
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1] Gram-positive spore-forming:
>Clostridium species

2]  Gram-positive nonspore-forming bacilli:
>Actinomyces
>Bi?dobacterium species
>Eubacterium
>Lactobacillus
>Propionibacterium





Comments:


Background:
  • Anaerobic bacteria do not grow on solid media in room air (0.04% carbon dioxide and 21% oxygen).
  • Facultative anaerobic bacteria can grow in the presence as well as in the absence of air.
  • Microaerophilic bacteria do not grow at all aerobically or grow poorly, but grow better under 10% carbon dioxide or anaerobically.
  • Anaerobic bacteria can be divided into strict anaerobes that can not grow in the presence of more than 0.5% oxygen and moderate anaerobic bacteria that are able of growing between 2 to 8% oxygen.
  • Anaerobic bacteria usually do not possess catalase, but some can generate superoxide dismutase which protects them from oxygen.
  • The clinically important anaerobes in decreasing frequency are:
    • 1. Six genera of Gram-negative rods (Bacteroides, Prevotella, Porphyromonas, Fusobacterium, Bilophila and Sutterella spp.);
    • 2. Gram-positive cocci (primarily Peptostreptococcus spp.);
    • 3. Gram-positive spore-forming (Clostridium spp.) and nonspore-forming bacilli (Actinomyces, Propionibacterium, Eubacterium, Lactobacillus and Bi?dobacterium spp.); and
    • 4. Gram-negative cocci (mainly Veillonella spp.) .
  • Because of their fastidious nature, anaerobes are hard to isolate and are often not recovered from infected sites.
  • Source (accessed 9/2013): http://en.wikipedia.org/wiki/Anaerobic_infection


Disclaimer

The authors make no claims of the accuracy of the information contained herein; and these suggested doses are not a substitute for clinical judgment. Neither GlobalRPh Inc. nor any other party involved in the preparation of this program shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user's use of or reliance upon this material. PLEASE READ THE DISCLAIMER CAREFULLY BEFORE ACCESSING OR USING THIS SITE. BY ACCESSING OR USING THIS SITE, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS SET FORTH IN THE DISCLAIMER.   Read the disclaimer
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