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malodorous feet / stinky feet



photo: Mark Dumont
https://www.flickr.com/photos/wcdumonts/9225133055/


Is a virus that infects and replicates within a bacterium

EM of bacteriophages attached to a bacterial cell.


Dr Graham Beardshttps://commons.wikimedia.org/wiki/File:Phage.jpg


phage injecting its genome intobacterial cell


Graham Colmhttps://commons.wikimedia.org/wiki/File:Phage_injecting_its_genome_into_bacterial_cell.png


The structure of a typical myovirus bacteriophage




photo: Carl Wirthhttps://www.flickr.com/photos/naturalismus/4472824306/

Brevibacterium casei

  • General information

    • the following information is not yet verified
      More than 90% of all clinical Brevibacterium are B. casei.

      Taxonomy
      Family: Brevibacteriaceae

      Natural habitats
      They are inhabitants of the human skin and can be found in dairy products, fresh and salt water, soil, sewage, fruits, vegetables and rice paddies.

      Clinical significance
      Rarely causes infection and then only in immunocompromised patients such as, osteomyelitis, peritonitis, bacteremia and malodorous feet

      Malodorous feet
      Sweat and bacteria is the cause of foot odor.
      The most common bacteria Brevibacterium causes smelly feet.
      Food odor usually appears to smell cheesy, similar to the smell of ammonia.

      They are active on the soles of feet and between the toes.
      The bacteria convert methionine to methanethiol, which smells like sulphur, that gives out the foul smell.

  • Gram stain

    • the following information is not yet verified
      Short, coryneform, Gram positive rod,

      0.6-1.2 x 1.5-6 µm

      they are arranged singley or in pairs,and often in an angle to give "V" formations

      in older cultures (3-7 days) segmenting the rods into cocci, and easy decolorization

      (rod-coc cycle)

  • Culture characteristics

    • the following information is not yet verified

      Obligate Aerobic

      Colonies are smooth and may be white to gray-white, yellow or orange-red depening on the species.

      Pigment production is light dependent.

      These organism have a distingtive odor sometimes described as cheesy or body odor.

      McConkey grow poorly or not at all

      BBAØ no growth

      Smell
      many of them have a distinctive cheese-like odor

  • Characteristics

  • References

    • James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition


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