Results 161 to 170 of about 7,042 (196)
Some of the next articles are maybe not open access.
Albumin requirement of Treponema denticola and Treponema vincentii
Canadian Journal of Microbiology, 1983Treponema 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
openaire +2 more sources
Immunochemical features of a macromolecule of Treponema denticola
Journal of Basic Microbiology, 1995AbstractIn 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
openaire +2 more sources
Laboratory Maintenance of Treponema denticola
Current Protocols in Microbiology, 2006AbstractThis 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 ...
openaire +2 more sources
Cytotoxic effect of peptidoglycan from Treponema denticola
Microbial Pathogenesis, 1993Peptidoglycan 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
openaire +2 more sources
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
openaire +2 more sources
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
openaire +2 more sources
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
openaire +2 more sources
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
openaire +2 more sources
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, Lola V Stamm
exaly +3 more sources
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
openaire +2 more sources