Abstract
Purpose: Investigate the possibility of delivering teriparatide orally using nanoemulsion.
Method: Teriparatide was allowed to interact with chitosan in the presence of HPβCD. The formed polyelectrolyte complex (PEC) was characterized by DSC, FTIR, DLS and for entrapment efficiency. PEC was the incorporated in an oil phase consisting of Oleic Acid, Labrasol and Plurol Oleique to form a nanoemulsion. This preparation was characterized for refractive index, viscosity, pH, conductivity, particle size, and morphology. Bioavailability of the preparation was evaluated using rabbits against SC injection. The efficacy of the formula was tested using ovariectomized rats (an osteoporosis animal model) and mechanical and histological tests were conducted on their bones. The stability of the preparation was evaluated by storing samples at 4o C, 25o C and 40o C for three months.
Results: PEC testing demonstrate a complex formation with particle size of 208 nm, zeta potential of +17 mV and entrapment efficiency of 49%. For the nanoemulsion, the results demonstrate the formation of a nano-sized dispersed system (108 nm) with a drug loading of 98% and a percent protection of 90% and 71% in SGF and SIF respectively. Bioavailability results showed a sustained release profile was achieved following the oral formulation administration. Efficacy studies showed improvement in the strength, thickness and connectivity of bones. Short-term stability study demonstrated that the nanoemulsion is mostly stable at 4o C.
Conclusion: These findings demonstrate the ability of delivering Teriparatide orally using oleic acid based dispersion in combination with chitosan PEC.
Original language | English |
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Article number | 80 |
Journal | Pharmaceutical Research |
Volume | 37 |
Issue number | 4 |
DOIs | |
Publication status | Published - 06 Apr 2020 |
Externally published | Yes |
Bibliographical note
Funding Information:The author wish to thanks Deanship of Research for providing the funding for this work (169/2012). The authors wish to thank Dr. Faisal Athamneh from Faculty of Chemistry, Jordan University of Science and Technology for his help. The authors are also thankful for Dr. Munther Al-Shami for his help in the pharmacokinetic statistics. The authors further wish to thank Dr. Adnan Badwan from the Jordanian Pharmaceutical Manufacturing Company (JPM)?and Dr Adnan Dakkuri from Feris State University for providing valuable suggestions and guidance for this research.
Publisher Copyright:
© 2020, Springer Science+Business Media, LLC, part of Springer Nature.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
Keywords
- Nanoemulsion
- Oral delivery of peptides
- Osteoporosis
- Polyelectrolyte complex
- Teriparatide
ASJC Scopus subject areas
- Biotechnology
- Molecular Medicine
- Pharmacology
- Pharmaceutical Science
- Organic Chemistry
- Pharmacology (medical)