PMID- 36214127 OWN - NLM STAT- MEDLINE DCOM- 20230130 LR - 20230403 IS - 1029-2330 (Electronic) IS - 1026-7158 (Linking) VI - 31 IP - 2 DP - 2023 Feb TI - Titanium surface polyethylene glycol hydrogel and gentamicin-loaded cross-linked starch microspheres release system for anti-infective drugs. PG - 217-224 LID - 10.1080/1061186X.2022.2134395 [doi] AB - OBJECTIVE: To design and construct a hydrogel drug-controlled release system loaded with gentamicin on a titanium surface, and to evaluate the in vitro drug release behaviour and antibacterial properties and biocompatibility of the controlled release system. METHODS: Titanium (Ti) surface was coated with poly dopamine (PDA) substrate, and then polyethylene glycol (PEG) was attached to PDA. The composite drug microsphere controlled release layer formed by gentamicin (GEN) and cross-linked starch (CSt) were subsequently covered with poly lactic rectangleco rectangleglycolic acid (PLGA) as a barrier to construct a Ti-GEN-Cst-PLGA anti-infective drug controlled release system. RESULTS: The hydrogel drug release system was successfully constructed. The results of in vitro anti-staphylococcus aureus (SAU) assay, anti-staphylococcus epidermidis (SEP) assay and anti-Escherichia coli (ECO) assay showed that Ti-GEN-Cst-PLGA could effectively inhibit the growth of three bacteria. Assay in the New Zealand rabbit found that Ti-GEN-Cst-PLGA could promote wound healing at the 3rd week after implantation, and the pathology assay found that the Ti-GEN-Cst-PLGA group had less inflammatory reactions and significant tissue proliferation at the endophyte contact surface. CONCLUSION: Ti-GEN-Cst-PLGA can effectively inhibit the inflammatory response and promote wound healing, or may be a potential treatment for orthopaedic endophytes. FAU - Wu, Yunfeng AU - Wu Y AD - Medical School of Chinese PLA, Beijing, China. AD - Department of Orthopedics, The Eighth Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Hu, Fanqi AU - Hu F AD - Department of Orthopedics, The Eighth Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Yang, Xiaoqing AU - Yang X AD - Department of Orthopedics, The Eighth Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Zhang, Shaofu AU - Zhang S AD - Department of Orthopedics, The Eighth Medical Centre, Chinese PLA General Hospital, Beijing, China. FAU - Jia, Chengqi AU - Jia C AD - Medical School of Chinese PLA, Beijing, China. FAU - Liu, Xiaole AU - Liu X AD - Medical School of Chinese PLA, Beijing, China. FAU - Zhang, Xuesong AU - Zhang X AD - Department of Orthopedics, The Eighth Medical Centre, Chinese PLA General Hospital, Beijing, China. LA - eng PT - Journal Article DEP - 20221019 PL - England TA - J Drug Target JT - Journal of drug targeting JID - 9312476 RN - 1SIA8062RS (Polylactic Acid-Polyglycolic Acid Copolymer) RN - D1JT611TNE (Titanium) RN - 0 (Gentamicins) RN - 0 (Delayed-Action Preparations) RN - 0 (Biocompatible Materials) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 0 (Hydrogels) RN - 9005-25-8 (Starch) SB - IM MH - Animals MH - Rabbits MH - Polylactic Acid-Polyglycolic Acid Copolymer MH - *Titanium/pharmacology MH - *Gentamicins/pharmacology MH - Delayed-Action Preparations MH - Microspheres MH - Biocompatible Materials MH - Polyethylene Glycols/chemistry MH - Hydrogels MH - Starch/chemistry OTO - NOTNLM OT - Titanium OT - antibacterial OT - gentamicin OT - hydrogel drug release system EDAT- 2022/10/11 06:00 MHDA- 2023/01/31 06:00 CRDT- 2022/10/10 05:03 PHST- 2022/10/11 06:00 [pubmed] PHST- 2023/01/31 06:00 [medline] PHST- 2022/10/10 05:03 [entrez] AID - 10.1080/1061186X.2022.2134395 [doi] PST - ppublish SO - J Drug Target. 2023 Feb;31(2):217-224. doi: 10.1080/1061186X.2022.2134395. Epub 2022 Oct 19.