Effect of oral nonionic polymeric micelles delivered parathyroid hormone cDNA on bone density and microarchitecture

Sung Hsiung Chen, Jih Yang Ko, Fong Fu Chou*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review


Introduction: Parathyroid Hormone (PTH) is an effective therapeutic agent for osteoporosis, but the treatment requires long-term daily injections. Oral gene delivery is a less invasive alternative to daily injections. Objective: The aim of this study is to investigate the effect of orally administered nonionic polymeric micelles of plasmid cDNA containing human cytomegalovirus promoter (PCMV)-PTH (1-34) plus EDTA on body mineral density and bone microstructure in ovariectomized rats. Material and Methods: A total of 27 Spraque-Dawley female rats were subjected to a bilateral ovariectomy. One month following the ovariectomy, they were randomly assigned to three groups: (1) (PCMVPTH (1-34) cDNA in polyethylene oxide-polypropylene oxide-polyethylene oxide (PEO-PPO-PEO) polymeric micelle formations plus EDTA); (2) PCMV-PTH (1-34) cDNA and (3) drinking water. The treatment was administered by oral gavage on day 1, 2, 7, 14, and 21 at 8-hour intervals. Body mineral density, bone volume fraction, and trabecular thickness of the lumbar spine and femoral neck were examined with peripheral quantitative computed tomography at pre- and post-intervention (3 months after the start of the intervention) and analyzed using two-way repeated measures analysis of variance. Results: Results showed that bone mineral density, bone volume fraction and trabecular thickness were significantly increased in Group 1 over time, compared with those in Group 2 and Group 3. Conclusion: In conclusion, significantly improved bone mineral density and bone microstructure were observed in ovariectomized rats treated with PTH (1-34) cDNA delivered by nonionic polymeric micelles.

Original languageEnglish
Pages (from-to)228-234
Number of pages7
JournalCurrent Gene Therapy
Issue number3
StatePublished - 01 06 2017

Bibliographical note

Publisher Copyright:
© 2017 Bentham Science Publishers.


  • Bone microstructure
  • Bone mineral density
  • CDNA
  • Oral gene
  • PCMV
  • Parathyroid hormone


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