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The Chinese Herbal Formula Wen Jing Tang Improves PCOS

The objective of this study was to investigate the effects of switching therapy to Wen-jing-tang (Unkei-to) from previous selected herbal preparations on endocrine levels and induction of ovulation in women with polycystic ovary syndrome (PCOS).

Sixty-four anovulatory women diagnosed with PCOS were enrolled in the study.

After Kampo diagnosis, subjects received matched Kampo preparations (43 cases: Dang-gui-shao-yao-san, 21 cases: Gui-zhi-fu-ling-wan) selected by the matching theory of eight-principle pattern identification and Kampo diagnosis based on concepts of the qi, blood, and fluids as the physiologic activity.

Fifty-four women who failed to ovulate after an 8-week treatment were randomly allocated to continuation of treatment with the preceding Kampo prescription (continuation group, n = 27) or treatment with Wen-jing- tang (switching group, n = 27).

Plasma FSH, LH and estradiol levels were measured and ovulation rates were determined at the beginning and after an 8-week treatment with the preceding Kampo prescription, as well as after the subsequent 8-week treatment with the same preparation or Wen-jing-tang.

No decrease in mean plasma LH level was observed in the 54 women who failed to ovulate among the 64 treated with a Kampo preparation. After the 8-week treatment with Wen-jing-tang, plasma LH levels were decreased by 58.2% (p 0.0001) and 49.4% (p = 0.0005) in the groups switched from Dang-gui-shao-yao-san and Gui-zhi-fu-ling-wan, respectively.

In the group switched from Dang-gui-shao-yao- san, a tendency towards increase in plasma estradiol level was observed (1.51-fold, p = 0.055), which was significant compared with that in the group switched from Gui-zhi-fu-ling-wan (p = 0.032).

The ovulation rate with switching of treatment to Wen- jingtang was significantly higher (59.3%) than that with continued use of the same preparation (7.4%, p = 0.0036). This study confirmed that Wen-jing-tang was effective in improving endocrine condition in the treatment of disturbances of ovulation in patients with PCOS without taking eight principle pattern identification into consideration.

This finding indicates that Wen-jing-tang is appropriate for use in treating PCOS in women with various constitutions (as determined by the matching theory of eight-principle pattern identification) in clinical practice and may prove to be a potent therapeutic agent with a wide therapeutic spectrum.

References

Ushiroyama, et al. (2006) Effects of Switching to Wen-Jing-Tang (Unkei-To) from Preceding Herbal Preparations Selected by Eight-Principle Pattern Identification on Endocrinological Status and Ovulatory Induction in Women with Polycystic Ovary Syndrome. The American Journal of Chinese Medicine, Vol. 34, No. 2, 177–187.

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