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Journal of Nanomaterials
Volume 2016, Article ID 6507459, 10 pages
http://dx.doi.org/10.1155/2016/6507459
Research Article

Development of a Doxycycline Hydrochloride-Loaded Electrospun Nanofibrous Membrane for GTR/GBR Applications

1State Key Laboratory of Military Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
2Department of Stomatology, Central Hospital of Xi’an, Shaanxi 710032, China
3Department of Pharmacy, Institute of Material Medical, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China

Received 23 August 2015; Revised 2 January 2016; Accepted 11 February 2016

Academic Editor: Silvia Licoccia

Copyright © 2016 Lie-ni Jia et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A drug-loaded membrane was prepared by electrospinning Poly ε-caprolactone (PCL) with doxycycline hydrochloride (DOX) (15–25% w/w). Scanning electron microscopy (SEM) images revealed that fibrous average diameter decreased from  nm to  nm with the drug proportion increasing from 15% to 20% w/w, while there was no significant difference between 20% and 25% groups. The polymer matrix showed good encapsulation value (58–75%) for DOX, and the drug showed an amorphous manner in the polymer matrix. The agar diffusion test revealed that DOX-loaded membranes had an obvious inhibited effect on Aggregatibacter actinomycetemcomitans (Aa) and Porphyromonas gingivalis (Pg), respectively. In vitro release test showed that DOX could persistently be released for a prolonged time more than 28 days, and the DOX level in the eluent steadied at 3–5 μg/mL which was all above the minimum inhibitory concentration (MIC) of DOX against Aa (0.125 μg/mL) and Pg (0.0625 μg/mL). Cytocompatibility, assessed in human periodontal ligament cells (hPLCs) by MTT-test and the morphology of cells on the surface of DOX-loaded membranes by SEM, indicated that all of the investigated nanofibrous membranes can be used to treat periodontal disease by integrating the GTR/GBR operation and antibiotic therapy. Above all, DOX-loaded nanofibrous membranes could have a persistent inhibited effect on periodontal pathogens to provide a relatively sterile environment for tissue repair and regeneration.