Results 141 to 150 of about 16,693 (176)

Glucose metabolism by Prevotella intermedia and Prevotella nigrescens

Oral Microbiology and Immunology, 2000
Glucose metabolism by Prevotella intermedia and Prevotella nigrescens were investigated. Glucose increased the anaerobic growth of these bacteria and promoted the accumulation of intracellular polysaccharide. The polysaccharide was confirmed to be glycogen‐like glucan by the absorption spectrum of iodine‐polysaccharide complex and the sugar composition.
N, Takahashi, T, Yamada
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Optimized oligonucleotides for the differentiation of Prevotella intermedia and Prevotella nigrescens

Oral Microbiology and Immunology, 1997
The gram‐negative, anaerobic bacterium Prevotella intermedia plays an important role in the progression of periodontitis, whereas the etiological role of the closely related but phenotypically indistinguishable species Prevotella nigrescens is controversial.
Conrads, Georg, Pelz, Klaus, Hughes, B., Seyfarth, Ilse, Devine, D. A.   +4 more
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Occurrence of Prevotella intermedia and Prevotella nigrescens in relation to gingivitis and gingival health

Journal of Clinical Periodontology, 2001
AbstractAim: The occurrence of Prevotella intermedia (Pi) and Prevotella nigrescens (Pn) in relation to natural gingivitis, gingival health and 14‐day experimental gingivitis was investigated in 25 non‐dental students.Materials and Methods:Samples were taken from the dorsum of the tongue, the tonsils (or tonsillar area), and the supra‐ and subgingival ...
Lie, M.A., van der Weijden, G.A., Timmerman, M.F., Loos, B.G., van Steenbergen, T.J.M., van der Velden, U.   +5 more
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Intra‐familial transmission and distribution of Prevotella intermedia and Prevotella nigrescens

Journal of Periodontal Research, 1997
The periodontal bacteria Prevotella intermedia and Prevotella nigrescens have been recently separated from each other. The purpose of this study was to investigate the distribution and routes of transmission of these bacteria among family members. Seven patients with moderate to severe periodontitis were selected.
T J, van Steenbergen, C J, Bosch-Tijhof, M D, Petit, U, Van der Velden   +3 more
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Persistence Patterns of Porphyromonas gingivalis, Prevotella intermedia/ Nigrescens, and Actinobacillus actinomycetemcomitans After Mechanical Therapy of Periodontal Disease

Journal of Periodontology, 2000
Background: The aim of this study was to determine the distribution patterns of Porphyromonas gingivalis, Prevotella intermedia/nigrescens, and Actinobacillus actinomycetemcomitans in periodontitis patients after standard mechanical periodontal therapy ...
Niklaus P Lang, Andrea Mombelli, Alexandra Rutar   +2 more
exaly   +2 more sources

Pathways for amino acid metabolism by Prevotella intermedia and Prevotella nigrescens

Oral Microbiology and Immunology, 2000
Pathways for amino acid metabolism by Prevotella intermedia and Prevotella nigrescens were investigated. Prevotella strains grew anaerobically in tryptone‐based medium and their growth increased upon the addition of aspartate to the medium. Washed cells of tryptone‐grown strains metabolized aspartate to succinate, acetate, fumarate, malate, formate and
N, Takahashi, T, Yamada
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Hydrolytic and depolymerising enzyme activity of Prevotella intermedia and Prevotella nigrescens

Oral Diseases, 1996
OBJECTIVE: Prevotella intermedia has been reported to be associated with periodontal disease whilst P. nigrescens has predominantly been isolated from more specific conditions and healthy sites. The aim of the present study was to compare the enzyme activity of these species.MATERIALS AND METHODS Nine strains of P.
S, Stubbs, M A, Lewis, R J, Waddington, G, Embery   +3 more
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Distribution and genetic analysis of oral Prevotella intermedia and Prevotella nigrescens

Oral Microbiology and Immunology, 1996
A total of 344 Prevotella intermedia and nigrescens group isolates from 59 subjects were identified by hybridization with nonradioactively labeled species‐specific oligonucleotide probes. Identification of 20 P. intermedia and 46 P. nigrescens isolates was confirmed by analyzing the electrophoretic mobilities of malate and glutamate dehydrogenase ...
J, Mättö, M, Saarela, B, von Troil-Lindén, E, Könönen, H, Jousimies-Somer, H, Torkko, S, Alaluusua, S, Asikainen   +7 more
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Characterization of binding and utilization of hemoglobin by Prevotella nigrescens

Oral Microbiology and Immunology, 2002
The ability of Prevotella nigrescens to utilize and bind to hemoglobin was investigated. Growth studies showed that P. nigrescens was able to utilize hemoglobin efficiently as an iron source. Binding of P. nigrescens to hemoglobin was demonstrated by dot blot assay. Heat and trypsin treatments of the bacteria led to a decrease in activity.
S, Guan, H, Nagata, M, Kuboniwa, Y, Ikawa, K, Maeda, S, Shizukuishi   +5 more
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Characterization of a bacteriocin produced by Prevotella nigrescens ATCC 25261

Letters in Applied Microbiology, 2004
To characterize the antimicrobial activity produced by Prevotella nigrescens ATCC 25261, and to evaluate its safety on cultured gingival fibroblasts.An antimicrobial activity was obtained from purifying the culture supernatant of Pr. nigrescens ATCC 25261. Purification of the active compound was achieved with ammonium sulphate precipitation followed by
J, Kaewsrichan, C W I, Douglas, J, Nissen-Meyer, G, Fimland, R, Teanpaisan   +4 more
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