Actinobaculum
Actinobaculum is a genus of gram-positive non-sporulating rods in the family Actinomycetaceae. Actinobaculum schaalii is recognized as a facultative anaerobic uropathogen. Actinomycetaceae are a family of bacteria including numerous parasitic and pathogenic forms.
Source: The classification tree for the genus Actinobaculum is found in Cattoir V. Actinobaculum schaalii: review of an emerging uropathogen. J Infect. 2012 Mar;64(3):260-7. The classification tree for Actinomycetaceae is from National Library of Medicine 2014 MeSH Scope Note and Classification.
Images
Figure 1. Gram stain of <i>Actinobaculum schaalii</i>.
Figure 1. Gram stain of Actinobaculum schaalii.
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Figure 2. Gram stain of <i>Actinobaculum schaalii</i>, grown in anaerobic blood culture bottle.
Figure 2. Gram stain of Actinobaculum schaalii, grown in anaerobic blood culture bottle.
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Figure 3. <i>A. schaalii</i>, growth on chocolate agar after 3 days, from blood culture specimen.
Figure 3. A. schaalii, growth on chocolate agar after 3 days, from blood culture specimen.
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Figure 4. <i>A. schaalii</i> growth after 3 days, from urine specimen subculture on blood agar TSA.
Figure 4. A. schaalii growth after 3 days, from urine specimen subculture on blood agar TSA.
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Related Cases
An elderly man with hematuria, dysuria, nausea and vomiting.
Related Images From Cases
References
  1. Cattoir V. (2012) Actinobaculum schaalii: review of an emerging uropathogen. J Infect. 2012 Mar;64(3):260-7. PMID:22209960 (PubMed abstract)