Adherence of Candida Albicans to Vaginal Epithelia: Significance of Morphological Form and Effect of Ketoconazole:Adhärenz von Candida albicans an Viginalepithelien: Einfluß verschiedener Wuchsformen und von Ketokonazol.
- 1 November 1985
- Vol. 28 (11) , 531-540
- https://doi.org/10.1111/j.1439-0507.1985.tb02083.x
Abstract
Summary: Candida albicans yeast cells, germ tubes and hyphae of equivalent ages were tested for their ability to adhere to vaginal epithelia when the viable biomasses of the different morphological forms were standardized by ATP measurment. No significant differences were found between mean numbers of yeasts and germ tubes adhering per epithelial cell, but numbers of 6‐hour‐old hyphae per epithelial cell were significantly lower. However, in terms of fungal biomass attached per epithelial cell, the 6h hyphae attached significantly better than the other cell forms, and in terms of surfaces areas of fungi per epitehlial cell, yeast cells were more poorly attached than either germ tubes or hyphae. No differences were seen in adherence of C. albicans to epithelia from pregnant and nonpregnant females, but previous observations that ketoconazole can reduce attachment of C. albicans to vaginal epithelia were confirmed. Scanning electron microscopy of adherent yeast and hyphal forms showed that only the tips of germ tubes and hyphae were involved in penetration of epithelial surfaces, and in some instances the hyphal tip appeared to be the only point truly attached to the epithelial cells.Zusammenfassung: Sproßzellen, Keimschläuche und Hyphen gleichen Alters von Candida albicans wurden auf ihre Fähigkeit untersucht, an Vaginalzellen zu haften. Die Lebendmasse der verschiedenen Wuchsformen wurde dabei durcb ATP‐Messungen standardisiert. Es bestand kein signifikanter Unterschied in der Adhärenz, wenn die Zahlen von Sproßzellen und Keimschläuchen miteinander verglichen wurden. Dagegen war die Zahl der pro Epithelzelle anhaftenden Hyphen deutlich geringer. Der Vedeich der Lebendmasse der Pilze zeigte, daß bezogen auf die einzehen Epithelzeilen 6 Stunden alte Hyphen signifikant besser hafteten als die anderen Zellformen. Bezog man den Vergleich auf das Maß der Zelloberfläche der Pilzelemente pro Epithelzelle, so war die Haftfäihigkeit der Sproßzellen geringer als die der beiden anderen Form‐elemente. Kein Unterschied in der Adhärenz fand sich beim Vergleich von Vaginalepithelien schwangerer und nicht‐whwangerer Frauen. Die Früen Die mere Beobachtung, daß Ketokonazol die Haftfägkeit von C. albicans an Vaginalepithelien verringert, konnte bestätigt werden. Rasterelektronenmikroskopie Aufnahmen ließen erkennen, daß nur die Spitzen von Keimschäiuchen und Hyphen epitheliale Oberflächen penetrieren. Bei einigen Befnnden schien es, daß ausscbließlich die Hyphenspitze emdentig an der Epitheloberfläche haftet.Keywords
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