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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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| **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 |
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| + | ===Characteristics=== |
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| + | *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 |
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| + | ===Pathogenicity=== |
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| + | *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 |
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| + | ===Clinical infections=== |
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| + | *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]] |
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| + | ===Treatment=== |
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| + | *Penicillin or broad spectrum antibiotics |
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| + | ==sheep== |
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| + | *'''''[[Corynebacterium pyogenes]]''''' |
| + | **May cause post-dipping joint infections |
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| + | ==pigs== |
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| + | **Cause purulent arthritis |
| + | **In one or more joints |
| + | **Commonly contaminate wounds |
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| + | ==cattle== |
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| + | *Infections at any age: |
| + | **'''''[[Corynebacterium pyogenes]]''''' |
| + | ***Suppurative arthrtis |
| + | ***Often due to pebetrating wound into or close to joints |
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| + | [[Category:Actinomycetes]][[Category:Pig Bacteria]][[Category:Cattle Bacteria]][[Category:Sheep Bacteria]] |
| + | [[Category:To_Do_-_Bacteria]][[Category:To Do - Medium]] |