マウスにおけるデスモプレシン誘発水分貯留に対する香り成分の作用

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Although fragrances are often used in aromatherapy for the treatment of edema, few studies on their diuretic and/or antiedematous activities have been performed. In this study, the effects of four types of fragrant ingredients (d-limonene, piperitone, α-pinene, and cinnamaldehyde) were examined in a mouse model of fluid retention. The mice were loaded with water after treatment with desmopressin (an antidiuretic hormone). In addition, zingerone, a pungent component of ginger which is considered to be effective in the treatment of edema, was examined. Moreover, their effects were compared with those of furosemide, a representative diuretic. Among the five types of fragrant ingredients examined, all except for cinnamaldehyde increased the urine volume in the fluid retention mouse model when administered at a dose of 100 mg/kg. In particular, d-limonene and zingerone significantly increased the urine volume. Thus the effects of these two ingredients were further examined at lower doses of 10 and 30 mg/kg. d-Limonene significantly increased the urine volume in a dose-dependent manner. Zingerone resulted in a significant increase in the urine volume only at a dose of 30 mg/kg. In normal mice, d-limonene did not affect the urine volume at the same doses. In contrast, zingerone significantly increased the urine volume in normal mice at a dose of 30 mg/kg. Furosemide significantly increased the urine volume in both the fluid-retentive and normal mice. These results indicate that both d-limonene and zingerone exhibit diuretic actions; however, the former fragrance only exerted an action in the fluid-retentive state. This different action suggests that d-limonene might be promising for the treatment of edema.

マウスにおけるデスモプレシン誘発水分貯留に対する香り成分の作用

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