Difference between revisions of "Category:Actinomyces"

From WikiVet English
Jump to navigation Jump to search
(Created page with '*Usually long filamentous branching Gram positive rods *Anaerobic or facultativlyy anaerobic and capnophilic *Live in nasopharyngeal and oral mucosa *Cause pyogranulomatous lesio…')
 
Line 3: Line 3:
 
*Live in nasopharyngeal and oral mucosa
 
*Live in nasopharyngeal and oral mucosa
 
*Cause pyogranulomatous lesions
 
*Cause pyogranulomatous lesions
**''Actinomyces bovis''
+
 
***Found naturally in oral cavity of cattle
+
 
***Prefers anaerobic conditions but not strict anaerobe
+
**''[[Actinomyces bovis]]''
***Entry of organism into tissues following trauma to the mucosa from rough feed or tooth eruption
+
 
***Causes [[Chronic Inflammation - Pathology#Granulomatous Inflammation|granulomatous inflammation]] of soft tissues and bone, causing [[Teeth - Pathology#Mandibular Osteomyelitis|lumpy jaw]]
 
***Usually invades mandible to cause [[Bones Inflammatory - Pathology#Osteomyelitis|osteomyelitis]] and may extend to surrounding [[Muscles Inflammatory - Pathology#Actinomycosis bovis|muscles]]
 
***The lesions begins as a painless swelling of the affected bone
 
***Swelling becomes more painful and enlarges over a number of weeks, gaining fistulous tracts which discharge pus
 
***Organisms found in yellow sulphur granules
 
***Club colony formation
 
***Colonies adhere to agar media and are non-haemolytic
 
***Surgical treatment possible when lesions are small
 
***Prolonged parenteral penicillin treatment may be beneficial early in the disease
 
 
**''Actinomyces viscosus''
 
**''Actinomyces viscosus''
 
***Commensal of oral cavity of dogs and humans
 
***Commensal of oral cavity of dogs and humans

Revision as of 12:04, 10 May 2010

  • Usually long filamentous branching Gram positive rods
  • Anaerobic or facultativlyy anaerobic and capnophilic
  • Live in nasopharyngeal and oral mucosa
  • Cause pyogranulomatous lesions


    • Actinomyces viscosus
      • Commensal of oral cavity of dogs and humans
      • Canine actinomycosis
      • Causes localised subcutaneous pyogranulomatous lesions and fibrovascular proliferation of peritoneal (peritonitis) and pleural surfaces in dogs
      • Leads to pyothorax
      • Respiratory distress
      • 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
    • Actinomyces hordeovulneris
      • Organism found in seed heads of certain grasses
      • Colonies adhere to agar and are non-haemolytic
      • Filamentous, branching organisms
      • Cause cutaneous and visceral abscessation, pleuritis, peritonitis and arthritis in dogs

Pages in category "Actinomyces"

The following 3 pages are in this category, out of 3 total.