Pseudomonads in Human Saliva

Sutter, Vera L.; Hurst, Valerie; Landucci, Albert O. J.

doi:10.1177/00220345660450063601

Cited by 20 publications

(7 citation statements)

References 3 publications

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“…Previously, although pseudomonads had been isolated from saliva, no trends with age had emerged. 24 In other studies, a range of enterobacteria (e.g., Klebsiella spp., Escherichia coli, Proteus spp.) have been isolated from the oropharynx of the elderly2' but, perhaps significantly, the isolation rates for these organisms increased as the individuals became more debilitated and hospitalised.…”

Section: Discussionmentioning

confidence: 92%

Age-related microbiological changes in the salivary and plaque microflora of healthy adults

Percival

Challacombe²,

Marsh³

1991

Journal of Medical Microbiology

135

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Summary. The effect of age on quantitative or qualitative differences in selected bacteria of dental significance and on the carriage of opportunistic pathogens and transient oral species was determined in 79 healthy, non-denture wearing individuals divided into four age groups : 20-39 years (group A), 40-59 years (group B), 60-79 years (group C) and 2 80 years (group D). Samples of dental plaque and whole saliva were cultured on appropriate selective and non-selective bacteriological media. The total numbers of viable bacteria in saliva, and the prevalence of mutans streptococci in plaque and saliva were similar in all age groups. Similarly, there was no correlation between the numbers of spirochaetes in plaque and age. In contrast, statistically significantly higher mean proportions (p = 0.004), mean loglo viable counts (p = 0.001) and isolation frequencies (p < 0.01) of lactobacilli were found in the saliva of those aged 2 70 years compared to subjects in group A. The isolation frequency (p < 0.05) and proportions (p = 0.056) of .staphylococci in saliva were also higher in those aged 2 70 years. Yeasts were isolated most often and in higher numbers from saliva in those aged 2 80 years and the proportion of yeasts was higher after 60 years of age, but these differences were not significant in comparison with results from individuals in group A. Actinomyces spp. were commonly isolated from plaque, but there was a change, with age, in the ratio of the proportions of A . viscosus and A . naeslundii so that A . viscosus predominated in elderly subjects (groups C and D). The results suggest that genuine age-related changes in the oral microflora can be detected, particularly after the age of 70 years, which are not related to denture-wearing or disease.

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Section: Discussionmentioning

confidence: 92%

Age-related microbiological changes in the salivary and plaque microflora of healthy adults

Percival

Challacombe²,

Marsh³

1991

Journal of Medical Microbiology

135

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“…Isolation of strains of P. fluorescens and P. putida from saliva or feces of healthy individuals indicates that these are part of the normal flora of a few individuals. Nonfluorescent pseudomonads were not found in saliva or feces of healthy individuals (15,16) because methods for detection were selective for fluorescent pseudomonads capable of growing on Cetrimide Agar.…”

Section: Downloaded Frommentioning

confidence: 99%

Identification of Pseudomonas Species Isolated from Hospital Environment and Human Sources

Sutter¹

1968

Applied Microbiology

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Methods and procedures are described for the identification of aerobic pseudomonads isolated from clinical specimens. Fluorescence is used as a means of primary differentiation. Final identification is based on the observation of characteristics such as flagellation, storage of intracellular fat, growth at 4 C and at 41 C, denitrification, gelatin hydrolysis, arginine dihydrolase activity, and oxidase activity. The value of this schema to the diagnostic laboratory is discussed.

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“…Information about the presence oi P. aeruginosa as an inhabitant or as a pathogen in the oral eavity is contradictory (Table 1). In earlier reports the prevalence rates oi P. aeruginosa in saliva have varied between 1% and 15% (6)(7)(8), and in pus specimens of orofacial infections between 0.3% and 6.5% (2,3,9,10). Tsatsas et al (11) have studied recontaminated root canals and isolated P. aeruginosa in one of 39 cases.…”

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confidence: 99%

Monoinfection of root canal with Pseudomonas aeruginosa

Ranta

Haapasalo

Ranta

1988

Dental Traumatology

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Ranta K, Haapasalo M, Ranta H. Monoinfection of root canal -with Pseudomonas aeruginosa. Endod Dent Traumatol 1988; 4: 269-272.Abstract -A successful treatment of a persisting endodontie infeetion with Pseudomonas aeruginosa is deseribed together with a review of its presence in saliva and root canal infections. The treatment ineluded ethanol irrigation and prolonged calcium hydroxide therapy in addition to thorough mechanical preparation. The minimum pH value of caleium hydroxide for in vitro killing of the isolated strain was found to be above 10.

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Pseudomonads in Human Saliva

Cited by 20 publications

References 3 publications

Age-related microbiological changes in the salivary and plaque microflora of healthy adults

Age-related microbiological changes in the salivary and plaque microflora of healthy adults

Identification of Pseudomonas Species Isolated from Hospital Environment and Human Sources

Monoinfection of root canal with Pseudomonas aeruginosa

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