Difference between revisions of "Zygomycosis"

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*Infection is by inhalation and ingestion
 
*Infection is by inhalation and ingestion
  
*Infects [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] of the [[Cardiorespiratory System - Anatomy & Physiology|respiratory]] and [[Alimentary - Anatomy & Physiology|alimentary tract]]
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*Infects [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] of the [[Cardiorespiratory System Overview - Anatomy & Physiology|respiratory]] and [[Alimentary System Overview - Anatomy & Physiology|alimentary tract]]
 
**[[Lymph Nodes - Anatomy & Physiology|Lymph nodes]] enlarge and become caseous
 
**[[Lymph Nodes - Anatomy & Physiology|Lymph nodes]] enlarge and become caseous
**Can cause [[Alimentary - Anatomy & Physiology#Stomach|stomach]] and [[Small Intestine - Anatomy & Physiology|intestinal]] ulcers
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**Can cause [[Alimentary System Overview - Anatomy & Physiology#Stomach|stomach]] and [[Small Intestine Overview - Anatomy & Physiology|intestinal]] ulcers
  
  
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*Cattle
 
*Cattle
 
**Bronchial, mesenteric and mediastinal [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] lesions
 
**Bronchial, mesenteric and mediastinal [[Lymph Nodes - Anatomy & Physiology|lymph nodes]] lesions
**Ulcers of the [[Nasal cavity - Anatomy & Physiology|nasal cavity]] and [[The Abomasum - Anatomy & Physiology|abomasum]] also occur
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**Ulcers of the [[Nasal Cavity - Anatomy & Physiology|nasal cavity]] and [[Abomasum - Anatomy & Physiology|abomasum]] also occur
**Often contaminate the [[Gestation -Placenta - Anatomy & Physiology|placenta]]
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**Often contaminate the [[Placenta - Anatomy & Physiology|placenta]]
  
 
*Horses, dogs, cats, sheep, mink, guinea-pigs and mice can also be infected
 
*Horses, dogs, cats, sheep, mink, guinea-pigs and mice can also be infected
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**Many eosinophils
 
**Many eosinophils
  
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==Test yourself with the Systemic Mycoses Flashcards==
  
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[[Systemic_Mycoses_-_Flashcards#Zygomycosis|Zygomycosis Flashcards]]
  
  
 
[[Category:Systemic_Mycoses]]
 
[[Category:Systemic_Mycoses]]
 
[[Category:To_Do_-_Fungi]]
 
[[Category:To_Do_-_Fungi]]
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[[Category:Subcutaneous Mycoses]]

Latest revision as of 14:20, 22 February 2011

  • Also known as mucormycosis, hyphomycosis and phycomycosis
  • Caused by strains of Mucor, Absidia, Rhizopus and Mortierella
    • Mucor circinelloides(rare), Rhizomucor pusillus and R. meihi
    • Absidia corymbifera often causes zygomycosis in cattle and pigs
    • Rhizopus arrhizus, R. microsporus and R. rhizopodormis
    • Mortierella wolfi implicated in bovine abortion (mycotic placentitis), M. hygrophila in fowl and M.polycephala in cattle
  • Occurs widely in nature
  • Infection is by inhalation and ingestion


  • Granulomatous lesions which can ulcerate
  • Mostly localised lesions but can be generalised
  • Pigs
    • Mediastinal and submandibular lymph nodes lesions
    • Embolic tumours in the liver and lungs
    • Can also be present in gastric ulcers
  • Horses, dogs, cats, sheep, mink, guinea-pigs and mice can also be infected
  • Microscopically:
    • Fragments of non-septate hyphae which are branched and coarse
    • Rhizomucor produce a thick, grey mycelium and have short, black, spherical sporangia
    • Mucor produce thick, colourless mycelium with no rhizoids. Globose spoangia with small spores are present and sporagiospores are simple or branched.
    • Absidia resemble Rhizopus grossly
    • Mortierella produce white, velvet colonies on Sabouraud's Dextrose and Blood agar
  • Grows on Sabauraud's Dextrose agar
    • Common contaminants
  • Treatment is with Amphotericin B
    • Surgery is also an option in treatment
  • Also called phycomycosis, mucormycosis
  • In horses due to Basidiobolus haptosporus
  • Pythiosis in horses and dogs is similar (caused by Pythium sp.
  • In warm, humid environments
  • Grossly:
    • Lesions on head, limbs, ventral body
    • In dogs also dorsolumbar region
    • Yellow, rough, necrotic tissue
  • Micospocically:
    • Hyphae ingranulomatou tissue
    • Many eosinophils

Test yourself with the Systemic Mycoses Flashcards

Zygomycosis Flashcards