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Dermatoendocrinol. 2015 Jul 20;7(1):e1063751. doi: 10.1080/19381980.2015.1063751. eCollection 2015 Jan-Dec.

Advantage of soybean isoflavone as antiandrogen on acne vulgaris.

Author information

1
Department of Dermatology and Venereology; Faculty of Medicine Diponegoro University; Hospital Kariadi ; Semarang, Indonesia.
2
Department of Nurition; Faculty of Medicine Diponegoro University; Hospital Kariadi ; Semarang, Indonesia.

Abstract

BACKGROUND:

Acne vulgaris (AV) is the commonest skin disorder, whereas soybean isoflavone had been proved as antiandrogen that is it can inhibit the enzyme 3ß-hydroxysteroid dehydrogenase,17ß-hydroxysteroid dehydrogenase and 5α-reductase. The purpose of this study is to prove the advantage of soybean isoflavone as antiandrogen on AV.

METHODS:

this study is a clinical study using randomized pretest-posttest control group design. This study is a study with 40 samples randomized into 2 groups, i.e. placebo group and 160 mgs of isoflavone group, the duration is 12 weeks, conducted a double-blind manner. The dependent variabel is total of AV lesion, whereas the intermediate variable is DHT that will be examined using ELISA. Defferential test and multivariate analysis were performed on dependent, independent and intermediate variables.

RESULTS:

This study found that the difference in mean of total AV lesion before treatment was not significant (p: 0.099), whereas after treatment it differed significantly (p: 0.000), with significant delta difference (p: 0.000). Difference of mean DHT level before treatment was not significant (p: 0.574), whereas after treatment it differed significantly (p: 0.000), with significant delta difference (p: 0.000). Delta of DHT (p: 0.003) (r: 0.736) had significant influence on delta of total AV lesion (P < 0.05).

CONCLUSION:

This study concludes that supplementation with 160 mgs/day of soybean isoflavone can reduce total AV lesion as a result of decreased DHT level.

KEYWORDS:

DHT; acne vulgaris; soybean isoflavone

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