Actinomycetes: Difference between revisions
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==Background== |
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* A genetically unrelated group of [[Has Gram stain::Gram-positive]] [[Has shape::bacillus|bacilli]] |
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* Filamentous soil bacteria |
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*Filamentous, mostly branching [[Stain::Gram-positive]] [[Shape::bacillus|bacilli]] |
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*The order Actinomycetales includes the aerobic actinomycetes |
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**Actinomycetales also include [[Corynebacterium]] (non-branching, non-acid-fast), [[Mycobacterium]] (non-branching, fully acid-fast), and [[Tropheryma whipplei]] |
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*Environmental organisms found in soil |
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{| class="wikitable" |
{| class="wikitable" |
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!Genus |
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!Infections |
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! colspan="2" |Partially acid-fast (cell wall contains mycolic acid) |
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|[[Nocardia]] |
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|[[mycetoma]], lymphocutaneous infections, skin abscesses; in immunocompromised hosts, invasive pulmonary and disseminated infections |
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|[[Rhodococcus]] |
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|pulmonary infections, bacteremia, skin and wound infections, UTIs, endophthalmitis, peritonitis, [[CLABSI]], [[abscess]] in prostate, spleen, thyroid, kidney, or brain, osteomyelitis; associated with horses |
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|[[Gordonia]] |
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|skin infections, chronic pulmonary disease, [[CLABSI]], wound infections, bacteremia |
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|[[Tsukamurella]] |
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|peritonitis, [[CLABSI]], skin infection |
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! colspan="2" |Not partially acid-fast (cell wall does not contain mycolic acid) |
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|[[Streptomyces]] |
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|commonly contaminant; inoculation skin infection including [[mycetoma]] |
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|[[Actinomadura]] |
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|inoculation skin infection including [[mycetoma]] |
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|[[Dermatophilus]] |
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|inoculation skin infection from insects or thorns |
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|[[Nodardiopsis]] |
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| [[Oerskovia]] |
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! colspan=2 | Miscellaneous |
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| [[Mycobacterium]] |
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|[[Oerskovia]] |
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[[Category:Gram-positive bacilli]] |
[[Category:Gram-positive bacilli]] |
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[[Category:Infectious diseases]] |
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Latest revision as of 16:59, 25 January 2022
Background
- Filamentous, mostly branching Gram-positive bacilli
- The order Actinomycetales includes the aerobic actinomycetes
- Actinomycetales also include Corynebacterium (non-branching, non-acid-fast), Mycobacterium (non-branching, fully acid-fast), and Tropheryma whipplei
- Environmental organisms found in soil
- More commonly seen in fungal cultures
- Typically not acid-fast, though some are partially acid-fast
Organisms
| Genus | Infections |
|---|---|
| Partially acid-fast (cell wall contains mycolic acid) | |
| Nocardia | mycetoma, lymphocutaneous infections, skin abscesses; in immunocompromised hosts, invasive pulmonary and disseminated infections |
| Rhodococcus | pulmonary infections, bacteremia, skin and wound infections, UTIs, endophthalmitis, peritonitis, CLABSI, abscess in prostate, spleen, thyroid, kidney, or brain, osteomyelitis; associated with horses |
| Gordonia | skin infections, chronic pulmonary disease, CLABSI, wound infections, bacteremia |
| Tsukamurella | peritonitis, CLABSI, skin infection |
| Not partially acid-fast (cell wall does not contain mycolic acid) | |
| Streptomyces | commonly contaminant; inoculation skin infection including mycetoma |
| Actinomadura | inoculation skin infection including mycetoma |
| Dermatophilus | inoculation skin infection from insects or thorns |
| Nodardiopsis | |
| Oerskovia | |
