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A pH-responsive ZC-QPP hydrogel for synergistic antibacterial and antioxidant treatment to enhance wound healing

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机构: [1]Shanghai Univ Engn Sci, Shanghai Engn Res Ctr Pharmaceut Intelligent Equi, Shanghai Frontiers Sci Res Ctr Druggabil Cardiova, Sch Chem & Chem Engn,Inst Frontier Med Technol, Shanghai 201620, Peoples R China [2]Shanghai Pudong New Area Peoples Hosp, Dept Emergency & Crit Care Med, Shanghai, Peoples R China [3]Shanghai Jiao Tong Univ, Sch Med, Shanghai Gen Hosp, Trauma Ctr, Shanghai 201620, Peoples R China [4]Shanghai Jiao Tong Univ, Tongren Hosp, Sch Med, Dept Radiat Oncol, 1111 Xianxia Rd, Shanghai 200336, Peoples R China
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The problems of bacterial resistance and high oxidation level severely limit wound healing. Therefore, we constructed a multifunctional platform of chitosan quaternary ammonium salts (QCS)/polyvinyl alcohol (PVA)/polyethylene glycol (PEG) hydrogels (QPP) loaded with ZnO@CeO2 (ZC-QPP). Firstly, the hydrogel was co-cross-linked by hydrogen and borate ester bonds, which allows easy adherence to a tissue surface for offering a protective barrier and moist environment for wounds. The chitosan quaternary ammonium salts due to their amino groups have inherent antibacterial properties to induce bacterial death. In response to the acidic conditions of the bacterial infection microenvironment, the borate ester bonds in the QPP hydrogel break and the ZC NCs dispersed in the hydrogel are released. The gradual dissociation of Zn2+ under acidic conditions can directly damage bacterial membranes. The wound site of bacterial infection always causes overexpression of reactive oxygen species (ROS) levels, often leading to inflammation and preventing rapid wound repair. CeO2 can eliminate excess ROS to reduce the inflammatory response. From in vitro and in vivo results, the high biosafety of the ZC-QPP hydrogel has demonstrated excellent antibacterial and antioxidant performance to enhance wound healing. Therefore, the ZC-QPP hydrogel opens a method to develop multifunctional synergistic therapeutic platforms combining enzyme-like nanomaterials with hydrogels for synergistic antibacterial and antioxidant treatment to promote wound healing. A ZC-QPP hydrogel with antibacterial and antioxidant properties has been successfully prepared, which can exhibit antibacterial and anti-inflammatory effects to ensure rapid wound healing.

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出版当年[2022]版:
大类 | 2 区 工程技术
小类 | 3 区 材料科学:生物材料
最新[2025]版:
大类 | 3 区 材料科学
小类 | 3 区 材料科学:生物材料
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出版当年[2021]版:
Q1 MATERIALS SCIENCE, BIOMATERIALS
最新[2023]版:
Q1 MATERIALS SCIENCE, BIOMATERIALS

影响因子: 最新[2023版] 最新五年平均 出版当年[2021版] 出版当年五年平均 出版前一年[2020版] 出版后一年[2022版]

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第一作者机构: [1]Shanghai Univ Engn Sci, Shanghai Engn Res Ctr Pharmaceut Intelligent Equi, Shanghai Frontiers Sci Res Ctr Druggabil Cardiova, Sch Chem & Chem Engn,Inst Frontier Med Technol, Shanghai 201620, Peoples R China
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通讯机构: [1]Shanghai Univ Engn Sci, Shanghai Engn Res Ctr Pharmaceut Intelligent Equi, Shanghai Frontiers Sci Res Ctr Druggabil Cardiova, Sch Chem & Chem Engn,Inst Frontier Med Technol, Shanghai 201620, Peoples R China [2]Shanghai Pudong New Area Peoples Hosp, Dept Emergency & Crit Care Med, Shanghai, Peoples R China
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