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Evidence-Based Complementary and Alternative Medicine
Volume 2015 (2015), Article ID 157846, 8 pages
http://dx.doi.org/10.1155/2015/157846
Research Article

Effect of Nourishing “Yin” Removing “Fire” Chinese Herbal Mixture on Hypothalamic Mammalian Target of Rapamycin Expression during Onset of Puberty in Female Rats

1Department of Integrative Medicine, Children’s Hospital of Fudan University, 399 Wanyuan Road, Shanghai 201102, China
2Department of Neurobiology and Integrative Medicine, Shanghai Medical College of Fudan University, 130 Dong An Road, Shanghai 200032, China

Received 9 June 2015; Revised 3 August 2015; Accepted 6 September 2015

Academic Editor: Takashi Takeda

Copyright © 2015 Gulan Zeng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Aim. The present study aims to investigate the effects of nourishing “Yin” removing “Fire” (NYRF) Chinese herbal mixture on puberty onset and hypothalamic mTOR expression in female rats. Materials and Methods. Forty female 20-day-old Sprague-Dawley rats were randomly divided into Chinese herbal mixture (CHM) and normal saline (NS) groups. Rats in CHM and NS were treated with NYRF mixture and normal saline, respectively, from d22. Rats in each group were sacrificed on d28, d31, and d34. Serum luteinizing hormone (LH), follicle stimulating hormone (FSH), and estradiol (E2) levels were analyzed by ELISA. Hypothalamic mTOR mRNA expression levels were determined by RT-PCR and hypothalamic p-mTOR protein levels were assayed by western blot. Results. The vaginal opening time in CHM group was significantly delayed . On d31, in comparison with NS group, the coefficients of uteri and ovaries, levels of serum LH and E2, and the expression levels of hypothalamic mTOR mRNA and p-mTOR protein were significantly lower in CHM group . Conclusion. The mechanism by which the nourishing “Yin” removing “Fire” Chinese herbal mixture delays puberty onset may be associated with the inhibition of the hypothalamic mTOR signaling.