Test 1: lecture 5: actinomycetia Flashcards
actinomycetia are gram ___ ___ that ___ spores
positive rods
do not form
what are 4 non acid fast actinomycetia bacteria
gram positive rods, no spores
Corynebacterium (C. pseudotuberculosis → CL and pigeon fever. C. bovis→ scaly skin C. renale → pizzle rot C. urealyticum → encrusting cystitis)
Actinomyces→ A. bovis → lumpy jaw and fistulous withers
Trueperella → T. pyogenes → pus
Dermatophilus → D. congolensis→ railroad, rain rot and lumpy wool
what are three actinomycetia acid fast bacteria
Mycobacterium
Nocardia (partial beaded) → grass awns
Rhodocococcus (partial) → R. equi → lungs, gut, knees
(gram + rods, no spores)
___ are gram positive rods that appear “filamentous” and “branching” (especially in tissues)
actinomycetia Often normal flora OR saprophytes
Cause opportunistic infections in compromised tissues
A few “true” pathogens as well
____ are NORMAL flora of the cutaneous microbiome and are COMMON contaminant in aerobic cultures
corynebacterium
(type of non-acid fast actinomycetia→ gram positive filamentous rod)
balto carries antitoxin for ___
corynebacterium diphtheriae
(gram + filamentous rod, non-acid fast actinomycetia)
coryneform
diphtheroid
dumbell clumped together
corynebacterium (gram + branching rod, non acid fast actinomycetia)
CL is caused by ___
Caseous lymphadenitis (aka CL or CLA)
Corynebacterium pseudotuberculosis (gram + rod, part of the actinomycetia)
Corynebacterium pseudotuberculosis cause
Caseous lymphadenitis (aka CL or CLA) in rumminants
pigeon fever in horses
___ is introduced during shearing and spreads to the lymph nodes and internal organs
CL Caseous lymphadenitis
caused by Corynebacterium pseudotuberculosis
how to treat CL
cull → bacteria is resistant to treatment, also very contagious
caused by Corynebacterium pseudotuberculosis (gram + rod)
how to treat pigeon fever
lance
caused by Corynebacterium pseudotuberculosis (gram + rod)
pigeon fever
caused by Corynebacterium pseudotuberculosis (gram + rod)
Pectoral abscessation in horse
- Bacteria live in the soil and enter through wounds, broken skin or mucous membranes
- Primarily found on west coast- dry seasons
Corynebacterium bovis (gram + rod, non acid fast actinomycetia)
scaly skin disease
scaly skin disease is caused by ___
Corynebacterium bovis (gram + rod, non acid fast actinomycetia)
seen in hairless lab mice
Corynebacterium bovis cause ___
scaly skin disease in hairless lab mice
environmental bovine mastitis
(gram + rod, non acid fast actinomycetia)
Corynebacterium renale cause __
Pyelonephritis of cattle
• Pizzle rot in small ruminants
(gram + rod, non acid fast actinomycetia)
pizzle rot is caused by
Corynebacterium renale
(gram + rod, non acid fast actinomycetia)
Corynebacterium urealyticum cause
encrusting cystitis in dogs and cats
very drug resistant
may require surgical debridement
(gram + rod, non acid fast actinomycetia)
encrusting cystitis is caused by ___
Corynebacterium urealyticum
(gram + , non acid fast actinomycetia)
Rhodococcus equi was previously called ___
corynebacterium equi
lives inside macrophages (can be polymorphic→ look different)
(gram + coccobacillus, partially acid fast actinomycetia)
___ effects foals around 6-12 weeks of age and is partially acid fast
Rhodoccooccus equi (previously Corynebacterium equi)
(gram + coccobacillus, partially acid fast actinomycetia)
how does rhodococcus equi spread
___ bacteria is common in the lungs, cecum and joints
rhodocococcus equi (previously corynebacterium equi)
leads to pyrogranulamatous pneumonia, ulcerative typhlocolitis, and septic arthritis
(gram + coccobacillus, partially acid fast actinomycetia)
rhodococcus equi leads to ___
pyrogranulamatous pneumonia, ulcerative typhlocolitis, and septic arthritis
(gram + coccobacillus, partially acid fast actinomycetia)