Difference between revisions of "Cryptococcosis"

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m (Text replace - "[[Urinary System - Anatomy & Physiology" to "[[Urinary System Overview - Anatomy & Physiology")
 
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*Over 19 species
 
*Over 19 species
**''C. neoformans'' only major pathogen
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**''[[Cryptococcus neoformans|Cryptococcus neoformans]]'' only major pathogen
  
 
*Worldwide
 
*Worldwide
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**Latex agglutination for [[Adaptive Immune System - Overview#Actions of the Adaptive Immune System|antigen]], complement fixation, ELISA and IFAT can be used
 
**Latex agglutination for [[Adaptive Immune System - Overview#Actions of the Adaptive Immune System|antigen]], complement fixation, ELISA and IFAT can be used
  
==Test yourself with the Yeast-like Fungi Flashcards==
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{{Learning
 
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|Vetstream = [https://www.vetstream.com/felis/Content/Disease/dis02453 Cryptococcosis - Felis]
[[Yeast-like_Fungi_-_Flashcards#Cryptococcosis|Cryptococcosis Flashcards]]
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|flashcards = [[Yeast-like_Fungi_-_Flashcards#Cryptococcosis|Cryptococcosis Flashcards]]
 
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}}
==Links==
 
 
 
===''[[Cryptococcus neoformans]]''===
 
  
  
 
[[Category:Respiratory Fungal Infections]]
 
[[Category:Respiratory Fungal Infections]]

Latest revision as of 09:31, 19 January 2016

  • Worldwide
  • Occurs in high concentrations in pigeon droppings (high creatinine concentration)
    • The pigeon is not infected
    • C. neoformis colonise the droppings after they have been excreted
    • Also found in fruit, milk and soil
  • Exogenous, inhaled infection which is generally sporadic (non-contageous)
    • Can also be absorbed via skin penetration and ingestion
  • May be a primary pathogen or opportunistic
  • Causes sporadic mastitis in cattle
    • Can spread within the herd
  • Affects the CNS of dogs and cats
  • Causes myxoma-like lesions of the lung and lip in horses
  • Causes cryptococcal meningitis in humans
  • Also affects dolphins, foxes, ferrets, monkeys, birds, cheetahs and guinea-pigs
  • Large yeast with capsule seen using India ink stain
  • Stains with PAS (Periodic acis Schiff)
  • Gram positive
  • Grows on blood agar and Sabouraud's Dextrose agar forming white, granular colonies which become slimy, mucoid and turn creamy/brown within a week
  • Species identified by carbohydrate assimilation tests
  • Antigen and antibody should be tested for as antibody formed by the body is soon overwhelmed and neutralised by abundent polysaccharide antigen from the capsule in active, systemic infections
    • Latex agglutination for antigen, complement fixation, ELISA and IFAT can be used


Cryptococcosis Learning Resources
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Cryptococcosis Flashcards