- 中国精品科技期刊
- 中国高校百佳科技期刊
- 中国中文核心期刊
- 中国科学引文数据库核心期刊
| Citation: |
SONG Linqi, ZHENG Feng. Preparation, characterization and in vitro release of diclofenac grafted with hyaluronic acid[J]. J China Pharm Univ, 2025, 56(1): 49 − 55. DOI: 10.11665/j.issn.1000-5048.2024072601
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In reference to the original drug diclofenac etalhyaluronate sodium (DF-HA), a graft copolymer was synthesized by covalent bonding. The structure of DF-HA was characterized by 1H NMR, UV-Vis spectrophotometry and FT-IR. The results showed that DF-HA was successfully synthesized, and the grafting rate was determined to be approximately 17% by 1H NMR and UV-Vis spectrophotometry. The in vitro release of DF-HA graft copolymer was studied by HPLC, and its release of diclofenac (DF) in phosphate buffered saline (PBS, pH 7.4) was investigated. The drug release rate of free DF was 83.6% after 6 h, and that of DF-HA was 4.8% within 1 d and 17.7% within 21 d, which were basically consistent with the release behavior of the reference listed drug. DF-HA could significantly achieve the sustained release of DF, and high molecular weight hyaluronic acid itself had the effect of treating osteoarthritis. With both advantages, DF-HA could have good application value.
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