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Fusobacterium nucleatum

  • General information

    • the following information is not yet verified
      Taxonomy
      Family: Fusobacteriaceae

      Natural habitats
      This bacterium is part of the normal flora of the mouth and pharynx, upper respiratory tract, sexual organs and gastrointestinal tract

      Clinical significance
      It is a key organism in maturation of pathogenic biofilms in periodontal pockets and considered an important pathogen in peri-implantitis, root and canal infection, dentoalveolar abscesses, and spreading odontogenic infections.

      They have a wide range of infections, like blood, brain, chest, heart, lung, liver, appendix, joint, abdomen, genitourinary tract as well as infected human bite lesions.

  • Gram stain

    • the following information is not yet verified
      Thin Gram negative rods,

      with pointed ends,

      and is often found in pairs end to end.

      Like Capnocytophaga and Leptotrichia buccalis (larger) ► indole negative

  • Culture characteristics

    • the following information is not yet verified

      Obligate anaerobic

      BBAØ
      Three colony morphotypes
      1. small, 0.5-1 mm, breadcrumb like, white ► F. nucleatum ssp fusiforme
      2. large, speckled, smooth, butyrous, greyish white ► F. nucleatum ssp polymorphum
      3. small, smooth, greyish white ► F. nucleatum ssp nucleatum

      The colony size varies from <0.5-2 mm, and they produce greening of the agar upon exposure to air.

      BBEØ no growth

      Fluorescentie/Woodslamp chartreuse / yellow-green

  • Characteristics

  • References

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