Difference between revisions of "Nocardia asteroides"
Jump to navigation
Jump to search
| Line 1: | Line 1: | ||
| − | + | *Found in soil and decaying vegetation - saprophytic | |
| − | + | *Opportunistic infection of immunocompromised animals | |
| − | + | *Infection via inhalation, wounds or teat canal; also ingestion | |
| − | + | *Causes granulomatous lesions in animals | |
| − | + | *Canine nocardiosis: | |
| − | + | **Thoracic, [[Bacterial skin infections - Pathology#bacterial granulomatous dermatitis|cutaneous]] and disseminated forms | |
| − | + | **Cutaneous pyogranulomas: ulcers or granulomatous swellings with discharging fistulae | |
| − | + | **[[Peritonitis - Cats and Dogs|peritonitis]] | |
| − | + | **[[Respiratory Bacterial Infections - Pathology#Nocardiosis|pleuritis]] and pyothorax with fever, anorexia and respiratory distress | |
| − | + | **Disseminated lesions | |
| − | + | **Treat with appropriate systemic antibiotics for 6 weeks | |
| − | + | *Cattle: chronic mastitis; abortion | |
| − | + | *Pigs: abortion | |
| − | + | *Sheep, goats, horses: wound infections; mastitis; pneumonia | |
| − | + | *Survives and multiplies in macrophages | |
| − | + | *Superoxide dismutase and catalase as well as a thick peptidoglycan wall prevent activity of phagocytes | |
| − | + | *Chronic, progressive disease | |
| − | + | *Positive modified Ziehl-Neelson | |
| − | + | *Culture on blood agar and incubate under aerobic conditions at 37 degrees centigrade for 10 days | |
| − | + | *White, powdery colonies, adherent to the agar appear after 5 days | |
| − | + | *Subculture onto Sabouraud dextrose agar yields wrinkled, orange colonies | |
| − | + | *Lesions difficult to treat due to resistance of organisms to many antimicrobials (e.g. penicillins) | |
| − | + | *Cell-mediated immunity required | |
[[Category:Nocardia species]][[Category:Dog]][[Category:Pig]][[Category:Cattle]] | [[Category:Nocardia species]][[Category:Dog]][[Category:Pig]][[Category:Cattle]] | ||
[[Category:To_Do_-_Bacteria]] | [[Category:To_Do_-_Bacteria]] | ||
Revision as of 19:06, 1 November 2010
- Found in soil and decaying vegetation - saprophytic
- Opportunistic infection of immunocompromised animals
- Infection via inhalation, wounds or teat canal; also ingestion
- Causes granulomatous lesions in animals
- Canine nocardiosis:
- Thoracic, cutaneous and disseminated forms
- Cutaneous pyogranulomas: ulcers or granulomatous swellings with discharging fistulae
- peritonitis
- pleuritis and pyothorax with fever, anorexia and respiratory distress
- Disseminated lesions
- Treat with appropriate systemic antibiotics for 6 weeks
- Cattle: chronic mastitis; abortion
- Pigs: abortion
- Sheep, goats, horses: wound infections; mastitis; pneumonia
- Survives and multiplies in macrophages
- Superoxide dismutase and catalase as well as a thick peptidoglycan wall prevent activity of phagocytes
- Chronic, progressive disease
- Positive modified Ziehl-Neelson
- Culture on blood agar and incubate under aerobic conditions at 37 degrees centigrade for 10 days
- White, powdery colonies, adherent to the agar appear after 5 days
- Subculture onto Sabouraud dextrose agar yields wrinkled, orange colonies
- Lesions difficult to treat due to resistance of organisms to many antimicrobials (e.g. penicillins)
- Cell-mediated immunity required