Isolation of the outer membranes from Treponema pallidum and Treponema vincentii
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چکیده
منابع مشابه
Isolation of the outer membranes from Treponema pallidum and Treponema vincentii.
The outer membranes from Treponema pallidum subsp. pallidum and Treponema vincentii were isolated by a novel method. Purified outer membranes from T. pallidum and T. vincentii following sucrose gradient centrifugation banded at 7 and 31% (wt/wt) sucrose, respectively. Freeze fracture electron microscopy of purified membrane vesicles from T. pallidum and T. vincentii revealed an extremely low de...
متن کاملShape of Treponema pallidum.
Treponema pallidum was found to be not helical, but a flat wave twisted into one to five different planes per cell.
متن کاملMucopolysaccharidase of Treponema pallidum.
Treponema pallidum (Nichols strain) exhibited mucopolysaccharidase activity. Acidic mucopolysaccharides were broken down more rapidly by viable treponemes than by heat-inactivated treponemes or membrane filtrates of treponemal suspensions. Ouchterlony immunodiffusion demonstrated the occurrence of antibodies to the hyaluronidase-like enzyme within syphilitic sera. After intratesticular inoculat...
متن کاملUltrastructure of lipopolysaccharide isolated from Treponema pallidum.
A lipopolysaccharide (LPS) fraction was extracted from Nichols, nonpathogenic Treponema pallidum by the hot, phenol-water procedure. The LPS was freed of nucleic acids and water-soluble proteins by successive exposures to ribonuclease, deoxyribonuclease, and Pronase. Purified LPS responded positively in a colorimetric assay for lipopolysaccharide. Electron microscope examination of the LPS both...
متن کاملPhagocytosis and avirulent Treponema pallidum.
SIR-Uptake of avirulent T. pallidum (Nichols strain) was demonstrated in an in vitro system. Motile treponemes were harvested after culture for 7 days in spirolate broth (Izzat, Knox, and Wende, 1971). Non-motile treponemes were also obtained by keeping some of these at 4°C. for 18 hours. Macrophages were obtained from the peritoneal cavity of a rabbit bywashing with 100 ml. Hanks's balanced sa...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1994
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.176.19.6088-6099.1994