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  • The effect of oral bacteria on Candida albicans germ-tube formation

    Author(s)
    G. Nair, Raj
    Anil, S.
    P. Samaranayake, Lakshman
    Griffith University Author(s)
    Nair, Raj
    Year published
    2001
    Metadata
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    Abstract
    A total of eight bacterial isolates belonging to six species, and a select group of 12 oral Candida albicans isolates, were used to study the effect of bacteria on germ-tube formation. Briefly, each bacterial suspension (10(5-6) cells/ml) was mixed with a C. albicans suspension (10(7) cells/ml) and incubated at 37 degrees C for 90 min with bovine serum, and the percentage germ-tube-positive Candida cells was quantified using a haemocytometer, under light microscopy. In general, out of eight bacteria, Streptococcus sanguis SK21A, Streptococcus salivarius SK56, Escherichia coli ATCC 25922, and S. salivarius OBU3 suppressed ...
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    A total of eight bacterial isolates belonging to six species, and a select group of 12 oral Candida albicans isolates, were used to study the effect of bacteria on germ-tube formation. Briefly, each bacterial suspension (10(5-6) cells/ml) was mixed with a C. albicans suspension (10(7) cells/ml) and incubated at 37 degrees C for 90 min with bovine serum, and the percentage germ-tube-positive Candida cells was quantified using a haemocytometer, under light microscopy. In general, out of eight bacteria, Streptococcus sanguis SK21A, Streptococcus salivarius SK56, Escherichia coli ATCC 25922, and S. salivarius OBU3 suppressed germ-tube formation to varying degrees, with different C albicans isolates. Porphyromonas gingivalis Pg 50, Lactobacillus casei ATCC 7469 and Prevotella intermedia OBU4 elicited significant enhancement of germ-tube formation, whereas S. sanguis OBU 2 had no effect. E. coli ATCC 25922 was the only organism to show statistically significant suppression of germ-tube formation (p=0.0312). A significant increase in the germ tube production of C. albicans isolated from HIV-infected compared with HIV-free individuals was also noted. The current results tend to suggest that commensal and transient oral bacterial populations may selectively influence the differential expression of germ-tube-forming ability of C. albicans isolates.
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    Journal Title
    Acta Pathologica Microbiologica et Immunologica Scandinavica
    Volume
    109
    Issue
    2
    DOI
    https://doi.org/10.1034/j.1600-0463.2001.d01-116.x
    Subject
    Clinical sciences
    Immunology
    Medical microbiology
    Publication URI
    http://hdl.handle.net/10072/15428
    Collection
    • Journal articles

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