Difference between revisions of "Actinomyces viscosus"

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***Commensal of oral cavity of dogs and humans
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{{unfinished}}
***Canine actinomycosis
 
***Causes localised subcutaneous pyogranulomatous lesions and fibrovascular proliferation of peritoneal ([[Peritonitis - Cats and Dogs|peritonitis]]) and pleural surfaces in dogs
 
***Leads to [[Pleural Cavity & Membranes Inflammatory - Pathology#Pyothorax (Thoracic empyema)|pyothorax]]
 
***Respiratory distress
 
***[[Bacterial skin infections - Pathology#Bacterial granulomatous dermatitis|Cutaneous pustules]] in horses
 
***Abortion in cattle
 
***Rods contained in soft grey granules which release the organism when squashed
 
***Two types of colonies: large and smooth colonies with V, Y and T configurations or small and rough colonies with short branching filaments
 
***Grow in 10% carbon dioxide
 
***Usually responds to penicillin
 
  
[[Category:Actinomyces]][[Category:Dog]][[Category:Horse]][[Category:Cattle]]
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==Overview==
[[Category:To_Do_-_Bacteria]]
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''Actinomyces viscosus'' is a species of the ''[[Actinomyces species - Overview|Actinomyces]]'' genus. It is a commensal of the oral cavity of dogs and humans.
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==Pathogenesis==
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''A.viscosus'' is involved in canine actinomycosis and causes localised, subcutaneous pyogranulomatous lesions and fibrovascular proliferation of peritoneal ([[Peritonitis - Cats and Dogs|peritonitis]]) and pleural surfaces in dogs.
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It leads to [[Pleural Cavity & Membranes Inflammatory - Pathology#Pyothorax (Thoracic empyema)|pyothorax]], respiratory distress, [[Bacterial skin infections - Pathology#Bacterial granulomatous dermatitis|Cutaneous pustules]] in horses and abortion in cattle.
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==Cultures==
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''A.viscosus'' rods are contained in soft grey granules which release the organism when squashed. There are two types of colonies: large and smooth colonies with V, Y and T configurations or small and rough colonies with short branching filaments. They grow in 10% carbon dioxide and usually respond to penicillin.
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[[Category:Actinomyces]]
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[[Category:To_Do_-_AimeeHicks]]

Revision as of 09:55, 23 July 2010



Overview

Actinomyces viscosus is a species of the Actinomyces genus. It is a commensal of the oral cavity of dogs and humans.

Pathogenesis

A.viscosus is involved in canine actinomycosis and causes localised, subcutaneous pyogranulomatous lesions and fibrovascular proliferation of peritoneal (peritonitis) and pleural surfaces in dogs. It leads to pyothorax, respiratory distress, Cutaneous pustules in horses and abortion in cattle.

Cultures

A.viscosus rods are contained in soft grey granules which release the organism when squashed. There are two types of colonies: large and smooth colonies with V, Y and T configurations or small and rough colonies with short branching filaments. They grow in 10% carbon dioxide and usually respond to penicillin.