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 ?
Intragingival occurrence of Actinobacillus actinomycetemcomitans and Bacteroides gingivalis in active destructive periodontal lesions.
Ello ha obligado a investigadores como Mombelli (8) (2002) a enfocar su meta analisis en 5 tipos especificos de bacterias, Actinobacillus actinomycetemcomitans, Porphhyromonas gingivalis, Prevotella intermedia, Bacteroides forsythhus, Campylobacter rectus, las cuales tenian parametros que habian sido reevaluados y discutidos ampliamente en la literatura periodontal.
Adiponectin inhibits osteoclast formation stimulated by lipopolysaccharide from Actinobacillus actinomycetemcomitans.
Efecto Antimicrobiano de la Caesalpinea spinosa (TARA) y tetraciclina frente Actinobacillus actinomycetemcomitans.
Occurrence of Actinobacillus actinomycetemcomitans in patients wearing orthodontic ap- pliances.
23) Los microorganismos que se han encontrado en relacion a la enfermedad periodontal son el Actinobacillus actinomycetemcomitans (el cual se relaciono con el Haemophilus Influenzae, causante de las enfermedades respiratorias); Porphyromonas gingivalis, Bacteroides forsythus, Prevottella intermedia, Peptoestreptococos micros, Campylobacter, Fusobacterias y Espiroquetas.
Quantitative real-time PCR using TaqMan and SYBR green for actinobacillus actinomycetemcomitans, porphyromonas gingivalis, Prevotella intermedia, tetQ gene and total bacteria.
Actinobacillus actinomycetemcomitans Y4 capsular polysaccharide induces IL-1[alpha] mRNA expression through the JNK pathway in differentiated THP-1 ceils [Electronic version].
Phenotypic variation in Actinobacillus actinomycetemcomitans during laboratory growth; implication for virulence.
Results of PCR performed on serum for Actinobacillus actinomycetemcomitans were also negative.

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