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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Der Hautarzt 45 (1994), S. 685-689 
    ISSN: 1432-1173
    Keywords: Schlüsselwörter: 19S-IgM-FTA-ABS-Test – IgM-SPHA-Test – IgM-Captia-Test – Treponema pallidum-spezifische IgM-Teste – Syphilisserologie ; Key words: 19S-IgM-FTA-ABS-test – IgM-SPHA-test – IgM-Captia-test – Treponema pallidum-specific IgM-tests – Syphilis serology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract. A total of 359 sera of untreated patients with syphilis were examined by three methods for the detection of Treponema pallidum specific IgM antibodies, the 19S-IgM-FTA-ABS test, the IgM solid phase haemadsorption assay (IgM-SPHA), and the IgM Captia assay. The results were compared and evaluated. In primary syphilis, the 19S-IgM-FTA-ABS and IgM-Captia yielded reactive results in all patients, whereas only 40% were positive in the IgM-SPHA; the corresponding values for early latent syphilis were 96.0%, 91.5% and 73.1%, respectively. In secondary syphilis, the reactivity of █ serum out of 27 was missed by IgM-Captia and that of another, by the IgM-SPHA. Mean values (ELISA units=extinction/cut-off) of IgM-Captia were higher in primary (2.25) than in secondary syphilis (1.70). In neurosyphilis, only the IgM-SPHA test detected reactivity in all sera, sensitivity for 19S-IgM FTA-ABS and IgM-Captia was 50.0% and 23.1%, respectively. Specificity of the IgM-Captia test results, determined in 386 sera, was 91.2%. The results of specific IgM tests are essential in the diagnosis of congenital syphilis as well as in the recognition of reinfection; they indicate the need for treatment and are useful in the assessment of the effectiveness of therapy.
    Notes: Zusammenfassung. Der Aussagewert von 3 Treponema-pallidum-spezifischen IgM-Testen, dem 19S-IgM-FTA-ABS-, dem 19S-IgM-Solid-Phase-Haemadsorption-Assay (IgM-SPHA) sowie dem IgM-Captia-Test wurde an 359 Sera von unbehandelten Patienten mit bekannter Syphilisinfektion untersucht und die Ergebnisse miteinander sowie mit den Befunden der Routineserologie (FTA-ABS-, TPHA-, VDRL-Test) verglichen. Im Primärstadium (n=38) waren die Proben sämtlicher untersuchter Patienten (37/37) im 19S-IgM-FTA-ABS- und im IgM-Captia-Test, jedoch nur 14/35 (40%) im IgM-SPHA-Test reaktiv. Der FTA-ABS zeigte bei 36/38 (94,7%), der TPHA bei 32/38 (84,2%), der VDRL bei 27/38 (71,1%) die Infektion an. Im Stadium der Frühlatenz (n=53) war der 19S-IgM-FTA-ABS-Test bei 48/50 (96%) reaktiv, der IgM SPHA bei 38/52 (73,1%), der IgM-Captia bei 44/49 (89,8%), der FTA-ABS bei 53/53 (100%), der TPHA bei 51/53 (96,2%) und der VDRL bei 48/53 (90,6%). Im Sekundärstadium (n=28) war der 19S-IgM-FTA-ABS-Test bei 28/28 (100%) reaktiv, der IgM-Captia bei 26/27 (96,3%), der 19S-IgM-SPHA bei 36/52 (69,2%), der FTA-ABS, der TPHA- und der VDRL-Test bei 28/28 (100%). Bei quantitativer Auswertung (ELISA-Einheiten – Absorptions-Grenzwert) des IgM-Captia-Testes lagen die Mittelwerte im Primärstadium deutlich höher (2,25) als im Sekundärstadium (1,7). Die Sera von Patienten mit Neurosyphilis (n=45) waren im 19S-IgM-FTA-ABS-Test in 19/38 (50%) der Proben, im IgM-SPHA-Test in 45/45 (100%), im IgM-Captia in 6/26 (23,1%), im FTA-ABS in 45/45 (100%), im TPHA in 45/45 (100%) und im VDRL in 43/45 (95%) reaktiv. Schließlich wurden die Sera von 195 Personen mit latenter Syphilis von unbekannter Dauer untersucht.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-7284
    Keywords: Chlamydia trachomatis ; Serology (ELISA) ; Urogenital infections ; Adnexitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The diagnostic value of different laboratory methods in detecting Chlamydia trachomatis infections in high risk groups was analysed. The efficiency of a direct specimen test was compared with serology (IgG and IgM ELISA) and culture in L929 cells, stained either with fluorescein conjugated monoclonal antibodies or with iodine. Patients (no. = 1041) with localized genital infections attending a STD clinic, sexual contacts and patients with ascending infections from urological and gynecological clinics were examined. Chlamydia trachomatis was detected in 225 patients: 210 (93.3% were reactive in the direct test (smears stained with monoclonal antibodies), whereas culture missed only 5 (sensitivity 97.8%) when stained by the same method. Cultures stained with iodine produced the lowest recovery rate (73.8%), but this rate increased to 80.9% when a second passage was performed. In addition the prevalence of Neisseria gonorrhoeae, Mycoplasma hominis, Ureaplasma urealyticum, Candida albicans and Trichomonas vaginalis was investigated. In patients with non-gonococcal urethritis (no. = 331) and cervicitis (no. = 353), Chlamydia trachomatis was isolated in 32.3% and 12.8% respectively. However, this pathogen could be isolated in only 3 (15.8%) out of 19 patients with epididymitis and 15 (14%) out of 107 patients with adnexitis, although 66.7% and 93.3% respectively had specific IgG antibodies. Specific IgM could by detected with a sandwich ELISA in patients with adnexitis (46.7%), epididymitis (33.3%), cervicitis (22.2%), non-gonococcal urethritis (14%) and in the sexual partners of patients with genital infections (35.7%). The direct specimen test with monoclonal antibodies is the method of choice for the diagnosis of a C. trachomatis infection in patients with urethritis and cervicitis. In ascending infections of the genital tract, however, even culture may give negative results, and serology may be of diagnostic assistance.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 24 (1996), S. 511-516 
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Vapor phase decomposition-droplet surface etching-graphite furnace atomic absorption spectroscopy (VPD-DSE-GFAAS) is discussed as a technique for the determination of low levels of metals in chemical oxides on silicon surfaces. The VPD-DSE-GFAAS technique was found to be statistically equivalent to results obtained by the standard surface techniques of total reflectance x-ray fluorescence spectroscopy (TXRF) and SIMS. The capability of the VPD-DSE-GFAAS technique has been extended to detection limits in the 107 to low 109 atom cm-2 range. A positive linear relationship was found for iron, calcium, zinc and aluminum deposited on a silicon wafer from an ammonium hydroxide-hydrogen peroxide-water (SC1) solution. Sodium and potassium deposition from SC1 solutions was found to be independent of solution concentrations. Deposition for these metals appeared to be primarily related to localized micron-sized nuclei deposits and not to adsorption on an atomic scale.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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