Effects of Huang Bai (Phellodendri Cortex) on bone growth and pubertal development in adolescent female rats

Sun Haeng Lee, Hyun Jeong Lee, Sung Hyun Lee, Young Sik Kim, Donghun Lee, Jiu Chun, Jin Yong Lee, Hocheol Kim, Gyu Tae Chang

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Background: To evaluate the effects of Huang Bai (Phellodendron amurense) on growth and maturation in adolescent female rats. Methods: Female Sprague-Dawley rats (28â ays old; nâ =â 72) were divided into six daily treatment groups: control (distilled water), Huang Bai (100 and 300â mg/kg), recombinant human GH (rhGH; 20â μg/kg), estradiol (1â μg/kg), and triptorelin (100â μg). Body weight, food intake, and vaginal opening were measured daily from postnatal day (PND) 28 to PND 43. Tetracycline (20â mg/kg) was injected on PND 41. After sacrifice on PND 43, the ovaries and uterus were weighed, and the tibias were fixed in 4% paraformaldehyde. Decalcified and dehydrated tibias were sectioned at a thickness of 40â μm, and sectioned tissues were examined with a fluorescence microscope. Insulin-like growth factor (IGF)-1 and bone morphogenetic protein (BMP)-2 were detected using immunohistochemistry. Results: Relative to controls, body weight was higher in the triptorelin group. Bone growth rate increased in the Huang Bai 100â mg/kg (354.00â ±â 31.1â μm/day), rhGH (367.10â ±â 27.11â μm/day), and triptorelin (374.50â ±â 25.37â μm/day) groups. Expression of IGF-1 and BMP-2 in the hypertrophic zone was higher in all experimental groups. Vaginal opening occurred earlier in the estradiol group (PND 33.58â ±â 1.62) than in controls and later in the triptorelin group (PNDâ >â 43). Ovarian and uterine weights were lower in the oestradiol and triptorelin groups. However, Huang Bai had nonsignificant effects on vaginal opening and the weights of ovaries and the uterus. Conclusions: Huang Bai stimulated bone growth by upregulating IGF-1 and BMP-2 in the growth plate. However, it had no effect on pubertal development.

Original languageEnglish
Article number3
JournalChinese Medicine
Volume13
Issue number1
DOIs
Publication statusPublished - 12 Jan 2018

Bibliographical note

Publisher Copyright:
© 2018 The Author(s).

Keywords

  • Bone growth
  • Bone morphogenetic protein-2
  • Huang Bai
  • Insulin-like growth factor-1
  • Ovarian weight
  • Uterine weight
  • Vaginal opening

Fingerprint

Dive into the research topics of 'Effects of Huang Bai (Phellodendri Cortex) on bone growth and pubertal development in adolescent female rats'. Together they form a unique fingerprint.

Cite this