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黄芩素包封的沸石咪唑骨架的制备作为一种新型纳米复合伤口闭合材料,用于说服剖宫产术后伤口护理中的 pH 响应愈合效果。

Fabrication of baicalein-encapsulated zeolitic imidazole framework as a novel nanocomposited wound closure material to persuade pH-responsive healing efficacy in post-caesarean section wound care.

机构信息

Obstetrics and Gynecology, Ningbo Women and Children's Hospital, Ningbo, China.

出版信息

Int Wound J. 2023 Aug;20(6):1921-1933. doi: 10.1111/iwj.14052. Epub 2022 Dec 26.

Abstract

Baicalein is a plant-derived compound, it has widespread attention among biomedical researchers due to its biocompatibility and efficient biological activities. But it has non-solubility in physiological conditions and short bioavailability in the clinical process. The Discovery of a stimuli-based drug delivery system (DDS) is a perfect strategy to improve the bioactivity of baicalin in post-caesarean section wound care. We prepared a baicalein-encapsulated pH-responsive DDS with a zeolite imidazole framework-8 (ZIF-8) as a carrier. We investigated the material characteristics of DDS in terms of crystal structure, surface area morphology, particle size, FTIR, UV-vis, Powder XRD, and BET analysis techniques. The in vitro cytotoxicity, biocompatibility, and cell proliferation properties of BA@ZIF-8 were assessed against human fibroblast L929 cells. In vitro studies showed that BA@ZIF-8 nanocomposite significantly enhanced the biocompatibility against L929 cells after 72 h post-exposure. The pH-responsive drug release kinetics shows excellent baicalein release under acidic conditions and without unwanted drug release in physiological conditions. Wound scratch assay results revealed, that BA@ZIF-8 nanocomposite-treated cells exhibit the fastest cell proliferation and migration process in a very short period. In the antibacterial activity study, nanocomposite exposed dose depended on inhibition against wound infectious pathogens. The overall study signifies that BA@ZIF-8 nano-DDSs are effective and suitable DDS for stimuli-based post-caesarean section wound care.

摘要

白杨素是一种植物衍生的化合物,由于其生物相容性和高效的生物活性,在生物医学研究人员中受到广泛关注。但其在生理条件下不溶解,在临床过程中生物利用度短。基于刺激的药物传递系统(DDS)的发现是提高黄芩素在后剖宫产伤口护理中生物活性的完美策略。我们制备了一种以沸石咪唑骨架-8(ZIF-8)为载体的包载白杨素的 pH 响应型 DDS。我们从晶体结构、比表面积形貌、粒径、FTIR、UV-vis、粉末 XRD 和 BET 分析技术等方面研究了 DDS 的材料特性。通过体外细胞毒性、生物相容性和细胞增殖性能评估了 BA@ZIF-8 对人成纤维细胞 L929 的影响。体外研究表明,BA@ZIF-8 纳米复合材料在暴露后 72 小时对 L929 细胞具有显著增强的生物相容性。pH 响应药物释放动力学显示,在酸性条件下具有优异的白杨素释放,而在生理条件下无不必要的药物释放。划痕实验结果表明,BA@ZIF-8 纳米复合材料处理的细胞在很短的时间内表现出最快的细胞增殖和迁移过程。在抗菌活性研究中,纳米复合材料的暴露剂量取决于对伤口感染病原体的抑制作用。总的来说,这项研究表明,BA@ZIF-8 纳米 DDS 是一种有效的、适合基于刺激的后剖宫产伤口护理的 DDS。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/add6/10333042/81c1a698051f/IWJ-20-1921-g003.jpg

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