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Emodin Reduces the Activity of (1,3)-β-D-glucan Synthase from Candida albicans and Does Not Interact with Caspofungin Cover

Emodin Reduces the Activity of (1,3)-β-D-glucan Synthase from Candida albicans and Does Not Interact with Caspofungin

By: MONIKA JANECZKO  
Open Access
|Dec 2018

Figures & Tables

Fig. 1.

Effect of emodin on (1,3)-β-D-glucan synthase activity.
Effect of emodin on (1,3)-β-D-glucan synthase activity.

Fig. 2.

Aniline blue staining of C. albicans cell walls. A) treatment with DMSO at 1% (control); B) caspofungin at 0.07 µg/ml; C) emodin at 6.25 µg/ml; D) emodin at 3.12 µg/ml.
Aniline blue staining of C. albicans cell walls. A) treatment with DMSO at 1% (control); B) caspofungin at 0.07 µg/ml; C) emodin at 6.25 µg/ml; D) emodin at 3.12 µg/ml.

Fig. 3.

The checkerboard method showing unresponsiveness of the emodin-caspofungin combination. The resulting checkerboard included each combination of emodin and caspofungin, with wells containing the highest concentration of each compounds in opposite corners (darkened fields mean cell growth; light fields mean no growth).
The checkerboard method showing unresponsiveness of the emodin-caspofungin combination. The resulting checkerboard included each combination of emodin and caspofungin, with wells containing the highest concentration of each compounds in opposite corners (darkened fields mean cell growth; light fields mean no growth).

In vitro activity of emodin and caspofungin alone and in combination assessed by the broth dilution method against clinical strains of C_ albicans isolated from vaginas_

Strain No.MIC of the drug used alone (µg/ml)MIC of the drug used in combination (µg/ml)FICIInteraction
EmodinCaspofunginEmodin + Caspofungin
1500.350 + 0.32Indifferent
2500.650 + 0.62Indifferent
3250.1525 + 0.33Indifferent
4500.350 + 0.32Indifferent
5250.1525 + 0.33Indifferent
6500.0725 + 0.152.64Indifferent
7500.350 + 0.63Indifferent
8500.625 + 0.31Indifferent
912.50.325 + 0.33Indifferent
10500.1550 + 0.65Antagonism
11500.0750 + 0.153Indifferent
12500.650 + 0.31.5Indifferent
13250.350 + 0.33Indifferent
14250.650 + 0.152.25Indifferent
15250.350 + 0.152.5Indifferent
1612.50.0325 + 0.155Antagonism
1712.50.612.5 + 0.62Indifferent
18500.350 + 0.63Indifferent
19500.1525 + 0.071Indifferent
20500.650 + 0.31.5Indifferent

In vitro activity of emodin and caspofungin alone and in combination assessed by the broth dilution assay against clinical strains of C_ albicans isolated from urinary tracts_

Strain No.MIC of the drug used alone (µg/ml)MIC of the drug used in combination (µg/ml)FICIInteraction
EmodinCaspofunginEmodin + Caspofungin
112.50.1512.5 + 0.33Indifferent
212.50.0712.5 + 0.35.28Antagonism
3250.325 + 0.63Indifferent
4250.325 + 0.32Indifferent
5500.650 + 1.23Indifferent
6500.1550 + 0.33Indifferent
712.50.1512.5 + 0.33Indifferent
812.50.0712.5 + 0.35.28Antagonism
9250.0325 + 0.156Antagonism
10250.325 + 0.151.5Indifferent
11250.1525 + 0.33Indifferent
12500.650 + 0.31.5Indifferent
13500.350 + 0.32Indifferent
14500.650 + 0.62Indifferent
15250.325 + 0.151.5Indifferent
166.250.0312.5 + 0.064Indifferent
17500.650 + 0.62Indifferent
18500.350 + 0.32Indifferent
19500.1525 + 0.151.5Indifferent
20250.650 + 0.63Indifferent

Effect of sorbitol on the MICs of emodin and antibiotics against C_ albicans ATCC 10231_

 MIC (µg/ml)
Without sorbitolWith sorbitol
Emodin12.525
Caspofungin0.150.6
Amphotericin B11
DOI: https://doi.org/10.21307/pjm-2018-054 | Journal eISSN: 2544-4646 | Journal ISSN: 1733-1331
Language: English
Page range: 463 - 470
Submitted on: Jun 20, 2018
|
Accepted on: Sep 4, 2018
|
Published on: Dec 10, 2018
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2018 MONIKA JANECZKO, published by Polish Society of Microbiologists
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.