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Arcanobacterium pyogenes (view source)
Revision as of 15:34, 24 January 2013
, 15:34, 24 January 2013no edit summary
New name: '''''Trueperella pyogenes'''''
*Characteristics:
*Characteristics:
**Formerly known as ''Actinomyces pyogenes'' and ''Corynebacterium pyogenes''
**Formerly known as ''Actinomyces pyogenes'' and ''Corynebacterium pyogenes''
**Suppurative infections
**Suppurative infections
**Abscesses especially in liver
**Abscesses especially in liver
**Lymphadenitis, [[Bones Inflammatory - Pathology#Osteomyelitis|osteomyelitis]], peritonitis and neural abscessation
**Lymphadenitis, [[Osteomyelitis|osteomyelitis]], peritonitis and neural abscessation
**Pyometra
**Pyometra
**Endometritis
**Endometritis
**Summer mastitis
**[[Summer Mastitis|Summer mastitis]]
**Ovine foot disease
**Ovine foot disease
**[[Joints Inflammatory - Pathology#In Sheep|Arthritis]] of sheep post-dipping; [[Joints Inflammatory - Pathology#In Pigs|arthritis in pigs]] and [[Joints Inflammatory - Pathology#In Cattle|arthritis in cattle]]
**[[Infectious Arthritis#In Sheep|Arthritis]] of sheep post-dipping; [[Infectious Arthritis#In Pigs|arthritis in pigs]] and [[Infectious Arthritis#In Cattle|arthritis in cattle]]
**Umbilical infections
**Umbilical infections
**[[Respiratory Bacterial Infections - Pathology#Acute exudative pneumonia|Acute exudative pneumonia]] and contributes to [[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of calves|Enzootic pneumonia of calves]]
**[[Respiratory Bacterial Infections - Pathology#Acute exudative pneumonia|Acute exudative pneumonia]] and contributes to [[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of calves|Enzootic pneumonia of calves]]
**May cause [[Muscles Inflammatory - Pathology#Abscesses|myositis]]
**May cause [[:Category:Bacterial Myositis|myositis]]
**Unclassified ''Actinomyces'' species isolated from closed cases of [[Bursae and Tendons Inflammatory - Pathology#Poll Evil and Fistulous Withers|Poll Evil and Fistulous Withers]]
**Unclassified ''Actinomyces'' species isolated from closed cases of [[Poll Evil and Fistulous Withers|Poll Evil and Fistulous Withers]]
*Treatment:
*Treatment:
**Penicillin or broad spectrum antibiotics[[Category:Actinomyces]][[Category:Pig]][[Category:Cattle]]
**Penicillin or broad spectrum antibiotics
===Characteristics===
*Formerly known as ''Actinomyces pyogenes'' and ''Corynebacterium pyogenes''
*Small facultatively anaerobic rod
*Grows slowly on blood agar to produce small, white colonies surrounded by a zone of beta-haemolysis after 48 hours
*Produces hazy haemolysis after 24 hours; pin-point colonies after 48 hours
*Coryneform morphology, like Chinese characters; may be curved with slightly swollen ends
*Found in nasopharyngeal mucosa and genital tract of cattle, sheep, pigs
===Pathogenicity===
*Opportunistic infections following injury or viral/mycoplasma infection in ruminants and pigs
*Extracellular toxins including haemolysin, proteases, DNase and neurominidase
*Haemolytic toxin, pyolysin, member of the thiol-activated cytolysins (pore-forming toxins); possibly cytotoxic to phagocytic cells; dermonecrotising activity
===Clinical infections===
*Suppurative infections
*Abscesses especially in liver
*Lymphadenitis, [[Osteomyelitis|osteomyelitis]], peritonitis and neural abscessation
*Pyometra
*Endometritis
*[[Summer Mastitis|Summer mastitis]]
*Ovine foot disease
*[[Infectious Arthritis#In Sheep|Arthritis]] of sheep post-dipping; [[Infectious Arthritis#In Pigs|arthritis in pigs]] and [[Infectious Arthritis#In Cattle|arthritis in cattle]]
*Umbilical infections
*[[Respiratory Bacterial Infections - Pathology#Acute exudative pneumonia|Acute exudative pneumonia]] and contributes to [[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of calves|Enzootic pneumonia of calves]]
*May cause [[:Category:Bacterial Myositis|myositis]]
===Treatment===
*Penicillin or broad spectrum antibiotics
==sheep==
*'''''[[Corynebacterium pyogenes]]'''''
**May cause post-dipping joint infections
==pigs==
**Cause purulent arthritis
**In one or more joints
**Commonly contaminate wounds
==cattle==
*Infections at any age:
**'''''[[Corynebacterium pyogenes]]'''''
***Suppurative arthrtis
***Often due to pebetrating wound into or close to joints
[[Category:Actinomycetes]][[Category:Pig Bacteria]][[Category:Cattle Bacteria]][[Category:Sheep Bacteria]]
[[Category:To_Do_-_Bacteria]][[Category:To Do - Medium]]