|
|
| (15 intermediate revisions by 3 users not shown) |
| Line 1: |
Line 1: |
| − | {{review}} | + | {{frontpage |
| | + | |pagetitle =Pasteurella and Mannheimia species |
| | + | |pagebody = The ''Pasteurella'' and ''Mannheimia'' species are small, Gram-negative bacilli or coccobacilli. They are common commensals of the upper respiratory tract and gastrointestinal mucosa of animals. |
| | + | |contenttitle =Content |
| | + | |contentbody =<big><b> |
| | + | <categorytree mode=pages>Pasteurella and Mannheimia species</categorytree> |
| | + | </b></big> |
| | + | |logo =bugs-logo copy.png |
| | + | }} |
| | | | |
| − | ===Overview ''Pasteurella'' and ''Mannheimia''===
| |
| | | | |
| − | *Common commensals of the upper respiratory tract and gastrointestinal tract mucosa of animals
| |
| − | *Usually opportunistic organisms, causing disease during times of stress, low resistance or concurrent infection
| |
| − | *Not part of the human bacterial flora
| |
| − | *Small Gram-negative bacilli or coccobacilli
| |
| − | *Facultative anaerobes
| |
| − | *Oxidase-positive
| |
| − | *May show bipolar staining with polychrome stains such as Wright's stain
| |
| − | *Capsules contain acidic polysaccharides
| |
| | | | |
| − | | + | [[Category:Bacterial Organisms]] |
| − | ===''Pasteurella'' Properties===
| + | [[Category:Gram_negative_bacteria]] |
| − | | + | [[Category:Rods]] |
| − | *Catarrhal odour
| |
| − | *Produce endotoxins which cause host damage and death
| |
| − | *Their capsules resist phagocytosis
| |
| − | | |
| − | | |
| − | ===''[[Pasteurella multocida]]''===
| |
| − | | |
| − | | |
| − | | |
| − | ===''[[Pasteurella pneumotropica]]''===
| |
| − | | |
| − | | |
| − | | |
| − | ===''[[Bibersteinia trehalosi]]
| |
| − | ===''[[Pasteurella canis]]''===
| |
| − | | |
| − | ===''Pasteurella caballi''===
| |
| − | | |
| − | *Equine respiratory tract disease, usually in association with ''Streptococcus equi'' subspecies [[Streptococci#S. zooepidemicus|''S. zooepidemicus'']]
| |
| − | *Equine peritonitis
| |
| − | | |
| − | ===''Pasteurella aerogenes''===
| |
| − | | |
| − | *Associated with gastroenteritis and abortion in swine
| |
| − | | |
| − | | |
| − | | |
| − | *''Pasteurella'' may be found in [[Bacterial skin infections - Pathology#Deep pyoderma|deep pyoderma]]
| |
| − | | |
| − | | |
| − | ===''Mannheimia''===
| |
| − | | |
| − | | |
| − | | |
| − | | |
| − | ===''Mannheimia haemolytica''===
| |
| − | | |
| − | *Cause of epizootic pneumonia in cattle known as Shipping Fever, Transit Fever or [[Respiratory Bacterial Infections - Pathology#Pneumonic pasteurellosis|pneumonic pasteurellosis]] (90% caused by ''Mannheimia haemolytica'' Biotype A, serotype 1 but also ''Pasteurella multocida''
| |
| − | *Usually secondary to viral infections such as [[Respiratory Viral Infections - Pathology#Parainfluenza- 3|parainfluenza - 3]] or [[Respiratory Viral Infections - Pathology#In Cattle|IBR]], bacterial infections such as ''Mycoplasma'' or environmental stress
| |
| − | *May contribute to [[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of calves|Enzootic pneumonia of calves]]
| |
| − | *Enzootic pneumonia in sheep
| |
| − | * [[Peritoneal Cavity Inflammatory - Pathology#Peritonitis|Peritonitis in sheep]]
| |
| − | * [[Oedema - Pathology#Permeability type|Permeability types of pulmonary oedema]]
| |
| − | *Septicaemia in young lambs
| |
| − | *Causes gangrenous mastitis in sheep
| |
| − | *Beta-haemolytic on blood agar
| |
| − | *Grow weakly on MacConkey agar
| |
| − | *Odourless
| |
| − | *All are ''Mannheimia'' A biotypes (previously ''Pasterurella haemolytica'')
| |
| − | *Strains often produce a cytotoxin, known as leukotoxin, which kills leukocytes of ruminants
| |
| − | *Leukotoxin is a member of the RTX group toxins, and is probably largely responsible for the pathogenicity of the bacteria in septicaemia and pneumonia
| |
| − | | |
| − | ===''Mannheimia glucosida''===
| |
| − | | |
| − | *Previously biotype A11
| |
| − | *Respiratory condition of ruminants[[Category:Bacteria]][[Category:Gram_negative_bacteria]][[Category:Rods]][[Category:Coccobacilli]]
| |
