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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Urological research 11 (1983), S. 97-102 
    ISSN: 1434-0879
    Keywords: Escherichia coli ; D-mannose ; Urinary tract infections ; Rats ; Adherence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of D-mannose and D-glucose on bacteriuria due to Escherichia coli with mannose-sensitive adhesins was investigated in adult male Sprague-Dawley rats undergoing diuresis. Inocula of 105, 107, or 108 bacteria in 0.1 ml of normal saline or 2.5% or 10% D-mannose or D-glucose were injected intravesically and urine was cultured 1, 3, 5, 7 and 9 days later. The levels of bacteriuria on days 1 and 5 were significantly lower in rats inoculated with 105 E. coli and 10% D-mannose than in controls (p〈0.05 and 0.01 respectively) and the percentages of rats with 〈 100 bacteria/ml were higher on days 1 and 3 (p=0.05 and 0.02 respectively). Bacteriuria was significantly lower in rats inoculated with 107 bacteria and 10% D-mannose than in controls on days 5 and 7 (p〈0.01 for each day) and the percentage of rats with 〈100 bacteria/ml was higher on day 7 (p=0.01). D-glucose reduced bacteriuria significantly only with a concentration of 10% after instillation of 105 E. coli (p〈0.05, day 1). The results indicate that D-mannose and D-glucose can significantly reduce bacteriuria within 1 day and that their efficacy is dependent upon the concentration of both saccharide and bacteria.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung An menschlichen uroepithelialen Zellen aus Mittelstrahlurin gesunder Frauen und an Epithelien der Vaginal- und Wangenschleimhaut von 11 gesunden Frauen und 24 Patientinnen, die im vorausgegangenen Jahr mindestens drei Harnwegsinfektionen durchgemacht hatten, wurde die Adhäsion vonEscherichia coli untersucht. Die verwendeten Bakterien wurden mit [3H] Uridin markiert; nicht haftende Bakterien wurden mit Hilfe von Vakuumfiltration durch einen Polykarbonat Membranfilter (Porengröße 5 µm) von den Epithelien getrennt. Die Anlagerung an uroepitheliale Zellen variierte von Tag zu Tag. Das Haftvermögen an vaginalen und bukkalen Epithelien von Patientinnen wies quantitativ eine größere Streubreite auf und war einem rascheren Wechsel unterlegen als die Hafteigenschaften von Epithelien gesunder Frauen. An den Vaginalepithelien von Patientinnen hafteten mehr Bakterien als an Zellen von Kontrollpersonen (10,1±0,92 verglichen mit 3,8±0,47 Bakterien pro Zelle [Mittelwert ± S. E.], P〈0,001); Entsprechendes wurde an Epithelien aus der Wangenschleimhaut beobachtet (11,7±1,29 gegenüber 7,1±0,49 Bakterien pro Zelle; P=0,002). Zwischen der Adhäsivität von Vaginalepithelien und Epithelien der Wangenschleimhaut bestand eine sehr ausgeprägte positive, nicht lineare Korrelation (R=0,87; P〈0,0001). Aus den Untersuchungsergebnissen läßt sich die Vermutung ableiten, daß Empfänglichkeit für Harnwegsinfektionen mit einer in Epithelzellen weit verbreiteten, wechselhaften Änderung der Eigenschaften für Bakterienadhärenz assoziiert ist.
    Notes: Summary Adherence ofEscherichia coli to human uroepithelial cells obtained from the midstream urine of healthy women, and to vaginal and buccal cells obtained from 11 healthy women and 24 patients who had had at least three urinary tract infections in the preceding year was studied. Bacteria labeled with [3H] uridine were used, and unattached organisms were separated from the epithelial cells by vacuum filtration through a polycarbonate membrane filter (5-µm-pore-size). A day-to-day variation in the receptivity of uroepithelial cells was noted. The range and rapidity of change in adherence to both vaginal and buccal cells were greater in patients than in controls. Adherence to vaginal cells was greater in patients than in controls (10.1±0.92 vs. 3.8±0.47 bacteria per cell [mean ± S. E.], P〈0.001), as was adherence to buccal cells (11.7±1.29 vs. 7.1±0.49, P=0.002). There was a very strong, positive non-linear correlation between vaginal and buccal cell receptivity (R=0.87, P〈0.0001). The data suggest that susceptibility in women to urinary-tract infections is associated with widespread, fluctuating changes in the adhesive characteristics of epithelial cells.
    Type of Medium: Electronic Resource
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