Results 211 to 220 of about 14,110 (240)
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Characterization of hemolysis and hemoxidation activities by Treponema denticola
Microbial Pathogenesis, 1994This 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, 1993The 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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Homology among Treponema denticola plasmids
Oral Microbiology and Immunology, 1994Three 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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Biochemical properties of the outer membrane of Treponema denticola
Journal of Clinical Microbiology, 1991The outer membranes (OMs) from serovars a, b, and c of Treponema denticola, originally isolated from periodontal patients, were prepared. Dialysis of the OMs against 20 mM MgCl2 yielded the aggregable (A) and the nonaggregable (NA) moieties of the OMs.
W W, Yotis +7 more
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Amino acid and glucose fermentation by Treponema denticola
Archiv f�r Mikrobiologie, 1971Treponema 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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Growth stimulation of Treponema denticola by periodontal microorganisms
Antonie van Leeuwenhoek, 1990Previous experiments have indicated that enrichment of subgingival plaque in human serum can lead to the accumulation of Treponema denticola. T. denticola depends on bacterial interactions for its growth in serum. Aim of the present study was to identify specific microorganisms involved in the growth stimulation of T. denticola.
P F, ter Steeg, J S, van der Hoeven
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Molecular Characterization of the Treponema denticola fliQ Region
DNA Sequence, 2001A Treponema denticola 4.2 kb DNA region containing four complete genes (orfl, fliQ, fliR, and flhB) and a truncated gene (flhA') was sequenced and analyzed. The deduced amino acid sequences of FliQ, FliR, FlhB and FlhA' have significant homology with bacterial proteins associated with the flagellar export apparatus, whereas the deduced amino acid ...
L V, Stamm, H L, Bergen
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Fatty acid requirement of Treponema denticola and Treponema vincentii
Canadian Journal of Microbiology, 1982Treponema 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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In vitro effect of the Sensonic™ toothbrush on Treponema denticola
Journal of Clinical Periodontology, 1997AbstractThe purpose of this in vitro study was to compare the effects of the Sensonic, Oral‐B Braun mechanical and Oral‐B manual toothbrushes upon the morphology and cellular integrity of Treponema denticola. This spirochete was chosen because of its frequent isolation from active lesions of inflammatory periodontal disease and its pathogenic potential.
V L, Blanco +3 more
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An unusual integron in Treponema denticola
Microbiology, 2004Nick, Coleman +3 more
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