Filamentous bacteria isolated from human root surface caries

Jordan, H.V.; Hammond, Benjamin F.

doi:10.1016/0003-9969(72)90166-5

Cited by 150 publications

(88 citation statements)

References 21 publications

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“…This fact may indicate that there is heterogeneity within the genus. Additional support for heterogeneity is provided by reports of microorganisms that differ biochemically from the type strain (279,342,550). Lesher (331).…”

Section: Opportunistic Pathogenic Actinomycetesmentioning

confidence: 96%

The medically important aerobic actinomycetes: epidemiology and microbiology

1994

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The aerobic actinomycetes are soil-inhabiting microorganisms that occur worldwide. In 1888, Nocard first recognized the pathogenic potential of this group of microorganisms. Since then, several aerobic actinomycetes have been a major source of interest for the commercial drug industry and have proved to be extremely useful microorganisms for producing novel antimicrobial agents. They have also been well known as potential veterinary pathogens affecting many different animal species. The medically important aerobic actinomycetes may cause significant morbidity and mortality, in particular in highly susceptible severely immunocompromised patients, including transplant recipients and patients infected with human immunodeficiency virus. However, the diagnosis of these infections may be difficult, and effective antimicrobial therapy may be complicated by antimicrobial resistance. The taxonomy of these microorganisms has been problematic. In recent revisions of their classification, new pathogenic species have been recognized. The development of additional and more reliable diagnostic tests and of a standardized method for antimicrobial susceptibility testing and the application of molecular techniques for the diagnosis and subtyping of these microorganisms are needed to better diagnose and treat infected patients and to identify effective control measures for these unusual pathogens. We review the epidemiology and microbiology of the major medically important aerobic actinomycetes.

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Section: Opportunistic Pathogenic Actinomycetesmentioning

confidence: 96%

The medically important aerobic actinomycetes: epidemiology and microbiology

1994

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“…Actinomyces species in plaque are associated with developing gingivitis and root surface caries 3) . It has been suggested that Actinomyces naeslundii T14V (formerly Actinomyces viscosus T14V) possesses two types of fimbriae that mediate its adsorption to surfaces of the mouth 4) .…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Oral Bacteria to Porous Type Calcium Carbonate.

Yamanaka

Saeki

Seki

et al. 2000

Bull. Tokyo Dent. Coll.

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The purpose of this study was to investigate the adsorption of [ 3 H]-thymidine labeled oral microorganisms to porous type calcium carbonate (PCC) beads in a buffer containing human parotid saliva and to PCC combined chewing gum sheets. Adsorption rates of Streptococcus sobrinus B13 and 6715, Streptococcus mutans MT8148R and Actinomyces naeslundii T14V with PCC were significantly higher than those with calcium carbonate (CC) beads (pϽ0.01). Adsorption rates of S. sobrinus, S. mutans and A. naeslundii with PCC combined chewing gum were significantly higher than those with CC combined chewing gum (pϽ0.01). The present results suggested that the chewing gum containing PCC may be able to exclude oral bacteria, including cariogenic and periodontopathic bacteria, for prevention of dental caries and periodontal disease.

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“…Both S. sanguis and A. viscosus have been cultured from the tooth surface shortly after cleaning [10]. From experimental caries studies using animal models [11][12][13][14], the evidence of its predominance in human root surface caries plaque and its plaqueforming ability, this organism is now thought to be one of the most important cariogenic agents.…”

Section: Introductionmentioning

confidence: 99%