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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Proteobacteria => Gammaproteobacteria => Pasteurellales => Pasteurellaceae => Actinobacillus => Actinobacillus hominis
Friis-Møller 1985
Friis-Møller 1985
Gram negative, small, nonmotile , pleomorphic rods with small capsules.
On 5% blood agar , colonies are 1.0 mm. , grayish-white, and soft mucoid. After 24
hours, colonies are flatter, with concentric rings, up to 2 mm on nutrient agar and up
to 2.5 mm and very mucoid on chocolate agar.
No hemolysis on blood agar after 24 hours, CAMP negative.
Facultatively anaerobic. V-factor independent. Growth on MacConkey agar is negative.
hours, colonies are flatter, with concentric rings, up to 2 mm on nutrient agar and up
to 2.5 mm and very mucoid on chocolate agar.
No hemolysis on blood agar after 24 hours, CAMP negative.
Facultatively anaerobic. V-factor independent. Growth on MacConkey agar is negative.
Actinobacillus hominis is a rare human isolate. Not isolated from animals.
Opportunistic pathogen (isolated from patients with chronic lung disease, septicemia in hepatic failure, pleural empyema,
cardiovascular disease, diabetes, peritonitis, HIV infection, meningitis, chronic psychiatric disorders, drug addiction, chronic
alcoholism).
cardiovascular disease, diabetes, peritonitis, HIV infection, meningitis, chronic psychiatric disorders, drug addiction, chronic
alcoholism).
- Olsen I., MØller K., 2004.Genus II. Actinobacillus . In: Bergey’s Manual of Systematic Bacteriology, Second edition,Vol two, part
B, George M. Garrity (Editor-in-Chief), pp. 866-883. - W.M. Janda, R. Mutters , 2006. Pasteurella, Mannheimia, Actinobacillus, Eikenella, Kingella, Capnocytophaga, and other
miscellaneous Gram-negative rods. In: Topley & Wilson’s Microbiology and Microbial Infections, 10 edition, Vol. 2,
Bacteriology, Edward Arnold Ltd. - J. G.Holt et al., 1994.Begey’s manual of Determinative Bacteriology, 9-edition, Williams & Wilkins.
- Carmen Pinzaru, 2009. Identificarea genurilor Pasteurella, Mannheimia, Actinobacillus.In:D.Buiuc, M.Negut (Ed.),Tratat de
Microbiologie Clinica, Ed. Medicala, Bucuresti, 859-868.
Nitrates reduction, oxidase, alkaline phosphatase, urease, D(+) xylose , mannitol, D
(+) galactose, D(+) glucose (acid), lactose, ONPG, maltose, melibiose, sucrose
(saccharose), trehalose & raffinose = positive.
Catalase, gelatinase, Voges-Proskauer, arginine dehydrolase, lysine decarboxylase,
ornithine decarboxylase, indole, L(+) arabinose, dulcitol, D(-) sorbitol, meso-inositol,
L(+) rhamnose, L(-) sorbose, cellobiose & gas from D(+) glucose = negative.
D(+) mannose, esculin, salicin & α-glucosidase (PNPG) = variable.
(+) galactose, D(+) glucose (acid), lactose, ONPG, maltose, melibiose, sucrose
(saccharose), trehalose & raffinose = positive.
Catalase, gelatinase, Voges-Proskauer, arginine dehydrolase, lysine decarboxylase,
ornithine decarboxylase, indole, L(+) arabinose, dulcitol, D(-) sorbitol, meso-inositol,
L(+) rhamnose, L(-) sorbose, cellobiose & gas from D(+) glucose = negative.
D(+) mannose, esculin, salicin & α-glucosidase (PNPG) = variable.
(c) Costin Stoica
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