PMID: 9641620Jun 26, 1998Paper

Characterization of soluble, salt-loaded, degradable PLGA films and their release of tetracycline

Journal of Biomedical Materials Research
W L WebberE Mathiowitz

Abstract

A local drug delivery system has been designed to release tetracycline over a period of 30 days from poly (lactide-co-glycolide) films. Incorporation of either soluble salt excipients or low molecular weight polymeric species has been found to modulate the release kinetics of the system. The following research describes the fabrication of the delivery system, monitors tetracycline release from the system, and fully characterizes the degradation of the polymer films via scanning electron microscopy, gel permeation chromatography, differential scanning calorimetry, Fourier-transform infrared spectroscopy, and X-ray diffraction techniques. Results show that the modulation via use of salts occurs without changing the inherent degradation rate of the system. We suggest that this phenomenon may be due to the increased amount of swelling and uptake of buffer by the films loaded with soluble salt. Uptake, therefore, may be creating microscopic pores that permit further diffusion of tetracycline from the polymer matrix as well as allow the free monomers to leave the system, thereby preventing autocatalysis within the system.

Citations

Jan 13, 2010·Chemistry : a European Journal·Ulyana Angel ShimanovichAharon Gedanken
Jan 24, 2012·Journal of Microencapsulation·Roshni S PatelEdith Mathiowitz
Nov 12, 2016·Therapeutic Delivery·Mariacristina Gagliardi
Jun 18, 2002·Pharmaceutical Development and Technology·Wolfgang Friess, Monika Schlapp
Feb 20, 2016·Pharmaceutical Development and Technology·Srilekha Sarkar DasDavid M Saylor
Sep 1, 1999·Proceedings of the National Academy of Sciences of the United States of America·A K DillowR Langer
Dec 29, 2007·Pharmaceutical Development and Technology·Susanne FredenbergAnders Axelsson
Jan 8, 2021·International Journal of Biological Macromolecules·Wei ShiCheng Hock Chuah
Apr 29, 2019·Colloids and Surfaces. B, Biointerfaces·Xuechen YinSurita R Bhatia
Jun 29, 1999·Analytical Chemistry·L M Ng, R Simmons

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