Effect of Oral Nonionic Polymeric Micelles Delivered Parathyroid Hormone cDNA on Bone Density and Microarchitecture.
Curr Gene Ther
; 17(3): 228-234, 2017.
Article
em En
| MEDLINE
| ID: mdl-28982328
ABSTRACT
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 ANDMETHODS:
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.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Hormônio Paratireóideo
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Polímeros
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Osso e Ossos
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Densidade Óssea
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Sistemas de Liberação de Medicamentos
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DNA Complementar
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Micelas
Limite:
Animals
Idioma:
En
Revista:
Curr Gene Ther
Ano de publicação:
2017
Tipo de documento:
Article