Mayumi Nomoto
Background: Drugs with various mechanisms of action such as antimicrobial agents, adapalene, and benzoyl peroxide are used to treat acne worldwide. In Japan, Kampo medicines have also traditionally been used for acne, including the medicine Jumihaidokuto (JHT). The mechanisms of action of Kampo medicines such as JHT have not been fully clarified, but it has been pointed out that oxidative stress is involved in the development of acne. Therefore, the author focused on the antioxidative effect of JHT and examined its relationship with acne improvement.
Methods: JHT (9 g/day) was administered for 3 weeks to 53 patients with acne, followed by measuring the diacron-reactive oxygen metabolites (d-ROMs) value as an indicator of oxidative stress, the biological antioxidant potential (BAP) value as an indicator of antioxidative potency, and the numbers of inflammatory and non-inflammatory skin rashes occurring before and after JHT administration. After the administration of JHT, the following results were observed.
Results: 1) The d-ROMs values of subjects who had a high baseline d-ROMs value were significantly reduced and the BAP values of those who had a low baseline BAP value were significantly increased; 2) there were significant reductions in the numbers of inflammatory and non-inflammatory skin rashes; 3) there was a significant correlation between the d-ROMs value and the number of non-inflammatory skin rashes; 4) the d-ROMs values of patients who rated their acne as “improved” by questionnaire were significantly reduced.
Conclusion: The above results suggest that an antioxidative effect is one of the mechanisms by which JHT contributes to acne improvement.
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