Difference between revisions of "Arcanobacterium pyogenes"
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| + | New name: '''''Trueperella pyogenes''''' | ||
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*Characteristics: | *Characteristics: | ||
**Formerly known as ''Actinomyces pyogenes'' and ''Corynebacterium pyogenes'' | **Formerly known as ''Actinomyces pyogenes'' and ''Corynebacterium pyogenes'' | ||
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**Pyometra | **Pyometra | ||
**Endometritis | **Endometritis | ||
| − | **Summer mastitis | + | **[[Summer Mastitis|Summer mastitis]] |
**Ovine foot disease | **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 | **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 [[ | + | **May cause [[:Category:Bacterial Myositis|myositis]] |
| − | **Unclassified ''Actinomyces'' species isolated from closed cases of [[ | + | **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 | **Penicillin or broad spectrum antibiotics | ||
| Line 52: | Line 54: | ||
*Pyometra | *Pyometra | ||
*Endometritis | *Endometritis | ||
| − | *Summer mastitis | + | *[[Summer Mastitis|Summer mastitis]] |
*Ovine foot disease | *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 | *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 [[ | + | *May cause [[:Category:Bacterial Myositis|myositis]] |
===Treatment=== | ===Treatment=== | ||
| Line 85: | Line 87: | ||
[[Category:Actinomycetes]][[Category:Pig Bacteria]][[Category:Cattle Bacteria]][[Category:Sheep Bacteria]] | [[Category:Actinomycetes]][[Category:Pig Bacteria]][[Category:Cattle Bacteria]][[Category:Sheep Bacteria]] | ||
| − | [[Category:To_Do_-_Bacteria]] | + | [[Category:To_Do_-_Bacteria]][[Category:To Do - Medium]] |
Latest revision as of 15:34, 24 January 2013
New name: Trueperella pyogenes
- 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, peritonitis and neural abscessation
- Pyometra
- Endometritis
- Summer mastitis
- Ovine foot disease
- Arthritis of sheep post-dipping; arthritis in pigs and arthritis in cattle
- Umbilical infections
- Acute exudative pneumonia and contributes to Enzootic pneumonia of calves
- May cause myositis
- Unclassified Actinomyces species isolated from closed cases of Poll Evil and Fistulous Withers
- Treatment:
- 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, peritonitis and neural abscessation
- Pyometra
- Endometritis
- Summer mastitis
- Ovine foot disease
- Arthritis of sheep post-dipping; arthritis in pigs and arthritis in cattle
- Umbilical infections
- Acute exudative pneumonia and contributes to Enzootic pneumonia of calves
- May cause 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
- Corynebacterium pyogenes