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Journal of Tissue Science and Engineering

ISSN: 2157-7552

Open Access

Feedback Controlled Release of Alendronate from Composite Microparticles

Abstract

Matrali SSH and Ghag AK

Extended bone fractures or fractures coexisting with bone disorders can lead to non-unions where surgical intervention is required. Composite drug delivery systems are
being used increasingly more in order to treat such defects locally. Alendronate (ALD), a bisphosphonate extensively used in clinical practice to treat conditions such as
osteoporosis has been shown to assist bone fracture healing through its antiresorptive capacity. This study reports the development of a polymeric composite system for the
in situ delivery of ALD, which possesses enhanced encapsulation efficiency (EE%) and demonstrates controlled release over a 70 day period. ALD and calcium phosphate
(CaP) have been incorporated within poly (lactic-co-glycolic acid) (PLGA) microspheres giving rise to a 70% increase in EE% compared to a control system. Finally,
preliminary toxicological evaluation demonstrates a positive effect of the system on pre-osteoblastic cells over 72 hours.

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Citations: 1095

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