Purified axial filaments from the cultivable Reiter treponeme, previously shown to share an antigenic component with pathogenic Treponemia pallidum, were evaluated as antigen in a diagnostic test for syphilis. Antibody to the filaments was revealed by counterimmunoelectrophoresis. Conditions that produced optimal results in the test were established. A total of 343 sera from normal individuals, biological false-positive reactors, and from patients in the different stages of syphilis were subjected to the test. The results indicate the test to be sensitive and highly specific for detecting treponemal antibodies in human syphilis.
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http://dx.doi.org/10.1128/jcm.8.2.148-152.1978 | DOI Listing |
Microb Genom
November 2020
Epidemiology of Highly Pathogenic Microorganisms, Robert Koch-Institut, Berlin, Germany.
Many non-human primate species in sub-Saharan Africa are infected with subsp. , the bacterium causing yaws in humans. In humans, yaws is often characterized by lesions of the extremities and face, while subsp.
View Article and Find Full Text PDFEur J Clin Microbiol Infect Dis
December 2000
Department of Immunology, Institute of Medical Microbiology, University of Freiburg, Germany.
Evidence of Borrelia burgdorferi sensu lato infection was sought in 230 patients with positive antibody titres in an indirect immunofluorescence test that became negative after serum samples were preabsorbed with treponemal antigen. Infection could be excluded in 82.2% (189/230) of patients, was questionable in 6.
View Article and Find Full Text PDFJ Bacteriol
March 1994
Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas 75235.
Freeze-fracture and deep-etch electron microscopy were used to investigate the molecular architecture of the Treponema pallidum outer membrane (OM). Freeze-fracture electron microscopy of treponemes freshly harvested from rabbit testes revealed that the intramembranous particles (IMPs) in both the concave and convex OM leaflets were distributed into alternating areas of relatively high and low particle density; in many OM fractures, IMPs formed rows that ran either parallel to or obliquely across the fracture faces. Statistical analysis (runs test) confirmed that the IMPs were nonrandomly distributed in both OM leaflets.
View Article and Find Full Text PDFMicrobiol Immunol
January 1995
Department of Oral Microbiology, School of Dentistry, Asahi University, Gifu, Japan.
The polypeptides of seven strains of human treponemes were investigated by immunoblot analysis for their binding to the human placental collagens and laminin. Of the treponemal polypeptides, eleven polypeptides, 45-kDa, 49-kDa, and 62-kDa polypeptides from T. pallidum ATCC 27087, a 48-kDa polypeptide from T.
View Article and Find Full Text PDFInfect Immun
February 1993
Department of Medicine, University of Washington, Seattle 98195.
Rabbit antisera to Leptospira interrogans, Borrelia hermsii, and Treponema phagedenis biotype Reiter, reactive to shared spirochetal antigens, failed to enhance phagocytosis of Treponema pallidum by macrophages, while immunoglobulin G to Treponema pallidum subsp. pertenue and Treponema paraluiscuniculi promoted phagocytosis. Opsonic antibodies are directed to pathogen-restricted, not shared spirochetal, antigens.
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