Results 161 to 170 of about 7,207 (198)

Albumin requirement of Treponema denticola and Treponema vincentii

Canadian Journal of Microbiology, 1983
Treponema denticola and Treponema vincentii were found to require albumin, oleic acid, and thiamine pyrophosphate (TPP) for growth. Previous studies indicated that commercial human alpha globulin, which is 50% albumin, was the only serum fraction that supported growth of these two oral treponemes.
K G, Van Horn, R M, Smibert
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Role of Treponema Denticola in Periodontal Diseases

Critical Reviews in Oral Biology & Medicine, 2001
Among periodontal anaerobic pathogens, the oral spirochetes, and especially Treponema denticola, have been associated with periodontal diseases such as early-onset periodontitis, necrotizing ulcerative gingivitis, and acute pericoronitis. Basic research as well as clinical evidence suggest that the prevalence of T.
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Laboratory Maintenance of Treponema denticola

Current Protocols in Microbiology, 2006
AbstractThis unit describes the methods, media, and equipment necessary for routine laboratory culture and handling of the anaerobic oral spirochete Treponema denticola. Topics discussed include nutrient requirements, recommended media formulations, and expected growth kinetics, as well as methods and equipment necessary to maintain anaerobic ...
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Characterization of hemolysis and hemoxidation activities by Treponema denticola

Microbial Pathogenesis, 1994
This study determined the presence of two hemolytic activities in the oral treponeme, Treponema denticola, strains ATCC 35404 (TD-4), ATCC 33520, GM-1, and MS25. These activities, referred to as hemolytic and hemoxidative (HeA, HeO, respectively), were found to be both secreted into the extracellular environment, and cell associated.
L, Chu, W, Kennell, S C, Holt
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Development of quasi-multicellular bodies of Treponema denticola

Archives of Microbiology, 1993
The formation of quasi-multicellular bodies of Treponema denticola was analysed using different electron microscopical methods. These bacteria could develop four different conformations: (i) normal helical forms; (ii) twisted spirochetes, forming plaits; (iii) twisted spirochetes,forming club-like structures; (iv) spherical bodies in different size ...
V, Wolf, R, Lange, J, Wecke
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Fatty acid requirement of Treponema denticola and Treponema vincentii

Canadian Journal of Microbiology, 1982
Treponema denticola and Treponema vincentii were cultured in a medium supplemented with either 0.2 or 0.4% (w/v) alpha globulin in place of serum. The active factor(s) in alpha globulin was stable at pH 7.0 to autoclaving and was nondialyzable. Extraction of lipids from alpha globulin showed that both protein and lipid, supplied by the alpha globulin,
K G, Van Horn, R M, Smibert
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Immunochemical features of a macromolecule of Treponema denticola

Journal of Basic Microbiology, 1995
AbstractIn this study the extraction and the immunochemical features of a lipopolysaccharide‐like (LPSL) macromolecule of T. denticola strains 35405, 35404, 33521 and 11 were investigated. The yield of LPSL molecule ranged between 0.5‐0.9% of the cell dry weight, it possessed Limulus amebocyte lysate clotting activity, and it contained glucosamine ...
W W, Yotis, F, Macaluso, C, Gopalsami
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Cytotoxic effect of peptidoglycan from Treponema denticola

Microbial Pathogenesis, 1993
Peptidoglycan isolated from pathogenic bacteria has been previously found to exhibit various biological activities. The aim of this investigation was to evaluate the toxicity of Treponema denticola peptidoglycan towards epithelial cells. The cytotoxicity of a lipopolysaccharide-like material was also determined. Epithelial cells were incubated with the
D, Grenier, V J, Uitto
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Homology among Treponema denticola plasmids

Oral Microbiology and Immunology, 1994
Three of 16 isolates of Treponema denticola were found to contain small (2.0–2.7 kb) cryptic plasmids. These were pTD1 from T. denticola ATCC 33520, pTD2 from strain T32A, and pTD3 from strain D3A1. These plasmids were characterized by restriction mapping and cloned into E. coli plasmid pUC19.
E, Reedy, L, Simonson, L, Zablen
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Amino acid and glucose fermentation by Treponema denticola

Archiv f�r Mikrobiologie, 1971
Treponema denticola was grown in serum-containing media to which 14C-labelled compounds were added. Determinations of radioactivity in the products formed indicated that the organism fermented alanine, cysteine, glycine, serine, and glucose. Fermentation products included acetate, lactate, succinate, formate, pyruvate, ethanol, CO2, H2S, and NH3.
R B, Hespell, E, Canale-Parola
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