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Xu L, Qiu L, Sheng Y, et al. Biodegradable pH-responsive hydrogels for controlled dual-drug release. J Mater Chem B. 2018;6(3):510-517doi: 10.1039/c7tb01851g.
Xu, L., Qiu, L., Sheng, Y., Sun, Y., Deng, L., Li, X., Bradley, M., & Zhang, R. (2018). Biodegradable pH-responsive hydrogels for controlled dual-drug release. Journal of materials chemistry. B, 6(3), 510-517. https://doi.org/10.1039/c7tb01851g
Xu, Liang, et al. "Biodegradable pH-responsive hydrogels for controlled dual-drug release." Journal of materials chemistry. B vol. 6,3 (2018): 510-517. doi: https://doi.org/10.1039/c7tb01851g
Xu L, Qiu L, Sheng Y, Sun Y, Deng L, Li X, Bradley M, Zhang R. Biodegradable pH-responsive hydrogels for controlled dual-drug release. J Mater Chem B. 2018 Jan 21;6(3):510-517. doi: 10.1039/c7tb01851g. Epub 2018 Jan 05. PMID: 32254530.
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J Mater Chem B. 2018 Jan 21;6(3):510-517. doi: 10.1039/c7tb01851g. Epub 2018 Jan 05.

Biodegradable pH-responsive hydrogels for controlled dual-drug release.

Journal of materials chemistry. B

Liang Xu, Linzi Qiu, Yang Sheng, Yixin Sun, Linhong Deng, Xinqing Li, Mark Bradley, Rong Zhang

Affiliations

  1. Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China. [email protected].

PMID: 32254530 DOI: 10.1039/c7tb01851g

Abstract

Dual-drug loaded pH-responsive hydrogels were prepared as a delivery system carrying, as exemplars, both anti-cancer and anti-bacterial agents for pH controlled drug release. The hydrogels were composed of poly(l-lactide)-co-polyethyleneglycol-co-poly(l-lactide) dimethacrylates (with various molecular weights of l-lactide oligomers) as a macromolecular crosslinker and copolymerized with acrylic acid and N-isopropylacrylamide. The biodegradability, biocompatibility and mechanical properties of the hydrogels were characterized with the hydrogels being nontoxic to cells, while showing a reversible >80% reduction in volume at pH 1.2 compared to pH 7.4. Drug release profiles showed differential release of tetracycline over doxorubicin at pH 1.2, with both drugs being released equally at pH 7.4. Biodegradability was tunable by altering the crosslinking density and pH, with the total degradation of the best gels observed within 2 weeks at pH 7.4.

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