Actinobacillus


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Actinobacillus

A genus of gram-negative, immotile and nonspore-forming, oval to rod-shaped, often pleomorphic bacteria which occur as parasites or pathogens in mammals (including humans), birds, and reptiles. They are facultatively aerobic, capable of fermenting carbohydrates (without production of gas) and of reducing nitrates. The genomic DNA contains between 40 and 47 mol % guanine plus cytosine. The actinobacillus group shares many biological properties with the genus Pasteurella. See Pasteurella

Actinobacillus (Pasteurella) ureae and A. hominis occur in the respiratory tract of healthy humans and may be involved in the pathogenesis of sinusitis, bronchopneumonia, pleural empyema, and meningitis. Actinobacillus actinomycetemcomitans occurs in the human oral microflora, and together with anaerobic or capnophilic organisms may cause endocarditis and suppurative lesions in the upper alimentary tract. Actinobacilli are susceptible to most antibiotics of the β-lactam family, aminoglycosides, tetracyclines, chloramphenicol, and many other antibacterial chemotherapeutics. See Antibiotic, Medical bacteriology

Actinobacillus

[‚ak·tə·nō·bə′sil·əs]
(microbiology)
A species of gram-negative, oval, spherical, or rod-shaped bacteria that are of uncertain affiliation; coccal and bacillary cells are often interspersed, giving a “Morse code” form; species are pathogens of animals, occasionally of humans.
References in periodicals archive ?
Face to face with Actinobacillus pleuropneumoniae: landscape of the distribution of clinical isolates in southeastern Brazil.
Intragingival occurrence of Actinobacillus actinomycetemcomitans and Bacteroides gingivalis in active destructive periodontal lesions.
Infection due to Actinobacillus actinomycetemcomitans and Haemophilus aphrophilus.
influenzae, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eiheneiia corrodens, Kingelia hingaeyK.
Among bacterial infections, Actinobacillosis caused by Actinobacillus lignieressi, a gram-negative bacillus inhabiting oral cavity and rumen has been frequently documented to affect large ruminants.
Provetella intermedia and Actinobacillus actinomycetemcomitans were found to be the most predominant bacteria causing failure of dental implants isolated by culture, while Prophyromonas gingivalis was the most predominant bacteria detected by PCR.
La inclusion de los patogenos se hizo bajo los siguientes criterios: PRRSV, PCV2, PVP, Lawsonia intracellularis, Actinobacillus pleuroneumoniae, por su alta prevalencia e impacto economico.
The bone-resorbing activities in tissue culture of lipopolysaccharides from the bacteria Actinobacillus actinomycetemcomitans, Bacteroides gingivalis and Capnocytophaga ochracea isolated from human mouths.
Previously grouped as [Pasteurella haemolytica]-" Actinobacillus salpingitidis" complex, a new genus was established following genetic and morphologic descriptions 4 It has been proposed that G anatis has a role in peritonitis and salpingitis in chickens concurrently infected with avian pathogenic E coli.
Actinobacillus, Capnocytophaga, Eikenefla, Kingelta, Pasteurella, and other fastidious or rarely encountered gram-negative rods.
A soluble B-N-acetylglucosaminidase, Dispersin B, produced by the periodontal pathogen Actinobacillus acti-nomycetemcomitans, was shown to disrupt and detach bio-films formed by several gram-negative and gram-positive species of bacteria (Kaplan et al.

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