中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (22): 4720-4730.doi: 10.12307/2025.455

• 水凝胶材料Hydrogel materials • 上一篇    下一篇

阿仑膦酸钠/壳聚糖/聚乙烯醇复合水凝胶膜的制备与表征

胡  晨1,姜  莹2,陈  佳3,乔光伟1,董  文1,马  坚1   

  1. 宁夏医科大学总医院,1口腔颌面外科,3口腔医院正畸科,宁夏回族自治区银川市   750004;2徐州市口腔医院口腔颌面外科,江苏省徐州市   221000
  • 收稿日期:2024-04-24 接受日期:2024-07-05 出版日期:2025-08-08 发布日期:2024-12-06
  • 通讯作者: 马坚,主任医师,宁夏医科大学总医院口腔颌面外科,宁夏回族自治区银川市 750004
  • 作者简介:胡晨,女,1989 年生,黑龙江省哈尔滨市人,汉族,硕士,主治医师,主要从事口腔颌面外科骨组织工程方面的研究。 姜莹,女,1996年生,江苏省徐州市人,汉族,硕士,医师,主要从事口腔颌面外科骨组织工程方面的研究。
  • 基金资助:
    宁夏自然科学基金项目(2021AAC03357),项目负责人:胡晨

Preparation and characterization of alendronate/chitosan/polyvinyl alcohol composite hydrogel films

Hu Chen1, Jiang Ying2, Chen Jia3, Qiao Guangwei1, Dong Wen1, Ma Jian1   

  1. 1Department of Oral and Maxillofacial Surgery, General Hospital of Ningxia Medical University, Yinchuan 750004, Ningxia Hui Autonomous Region, China; 2Department of Oral and Maxillofacial Surgery, Xuzhou Stomatological Hospital, Xuzhou 221000, Jiangsu Province, China; 3Department of Orthodontics, Stomatological Hospital, General Hospital of Ningxia Medical University, Yinchuan 750004, Ningxia Hui Autonomous Region, China
  • Received:2024-04-24 Accepted:2024-07-05 Online:2025-08-08 Published:2024-12-06
  • Contact: Ma Jian, Chief physician, Department of Oral and Maxillofacial Surgery, General Hospital of Ningxia Medical University, Yinchuan 750004, Ningxia Hui Autonomous Region, China
  • About author:Hu Chen, Master, Attending physician, Department of Oral and Maxillofacial Surgery, General Hospital of Ningxia Medical University, Yinchuan 750004, Ningxia Hui Autonomous Region, China Jiang Ying, Master, Physician, Department of Oral and Maxillofacial Surgery, Xuzhou Stomatological Hospital, Xuzhou 221000, Jiangsu Province, China
  • Supported by:
    Ningxia Natural Science Foundation Project, No. 2021AAC03357 (to HC)

摘要:


文题释义:

水凝胶:是由亲水性聚合物链通过化学及物理交联而形成的高分子三维网络结构,可以在水中迅速溶胀并吸收大量的水分,同时保留原有的形状和结构而不溶解于水中。
阿仑膦酸钠:属于第三代双膦酸盐药物,可以通过抑制破骨细胞活性、抑制骨吸收而增加骨量,预防骨折,是治疗绝经后骨质疏松和老年性骨质疏松的一线用药。


背景:骨质疏松症是牙种植治疗的高风险因素,制备缓释阿仑膦酸钠的组织工程支架应用于骨质疏松患者口腔种植手术是当前口腔骨组织工程研究热点。

目的:制备阿仑膦酸钠/壳聚糖/聚乙烯醇复合水凝胶膜,表征其缓释性能。 
方法:①采用物理交联法制备不同质量比(壳聚糖与聚乙烯醇的质量比分别为3∶7、5∶5、7∶3)的壳聚糖/聚乙烯醇复合水凝胶膜与单纯的壳聚糖、聚乙烯醇水凝胶膜,通过表征水凝胶膜的形貌、水接触角、力学性能、溶胀率与细胞相容性筛选适宜的水凝胶膜作为阿仑膦酸钠的载体。②制备含0,0.4,1.2,2.0 mg/L阿仑膦酸钠的单纯壳聚糖/聚乙烯醇复合水凝胶膜,将大鼠骨髓间充质干细胞分别与4组水凝胶膜共培养,通过CCK-8法与CD44免疫荧光染色检测水凝胶膜的细胞相容性。将载药壳聚糖/聚乙烯醇复合水凝胶膜浸泡于PBS中,采用紫外可见分光光度法检测复合水凝胶膜的药物释放性能。

结果与结论:①表征结果显示,随着水凝胶膜中聚乙烯醇质量的增加,水凝胶膜的结构密度增加、孔隙率减少,水接触角(均在90°以内)、断裂伸长率与抗压强度增大,平衡溶胀率降低,对大鼠骨髓间充质干细胞的增殖均无影响,单纯壳聚糖水凝胶膜可促进大鼠骨髓间充质干细胞的黏附,3∶7、5∶5比例复合水凝胶膜不影响大鼠骨髓间充质干细胞的黏附,单纯聚乙烯醇水凝胶膜、7∶3比例复合水凝胶膜抑制大鼠骨髓间充质干细胞的黏附,综合以上结果,选择5∶5复合水凝胶膜作为阿仑膦酸钠的载体。②CCK-8检测结果显示,含0.4,1.2 mg/L阿仑膦酸钠组复合水凝胶膜无细胞毒性;CD44免疫荧光染色结果显示,含0.4 mg/L阿仑膦酸钠组复合水凝胶膜不影响大鼠骨髓间充质干细胞的黏附,含1.2,2.0 mg/L阿仑膦酸钠组复合水凝胶膜抑制大鼠骨髓间充质干细胞的黏附;含0.4,1.2,2.0 mg/L阿仑膦酸钠的壳聚糖/聚乙烯醇复合水凝胶膜在最初6 h内爆发性释放阿仑膦酸钠,此后均匀稳定地释放阿仑膦酸钠,释放时间达96 h以上。③结果表明,5∶5比例的壳聚糖/聚乙烯醇复合水凝胶膜具有良好的理化性能、细胞相容性,可以作为阿仑膦酸钠的缓释载体。

https://orcid.org/0009-0005-0302-8257 (胡晨) 

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料;口腔生物材料;纳米材料;缓释材料;材料相容性;组织工程

关键词: 阿仑膦酸钠, 壳聚糖, 聚乙烯醇, 水凝胶, 复合水凝胶膜, 种植体

Abstract: BACKGROUND: Osteoporosis is a high-risk factor for dental implant treatment. The preparation of tissue engineering scaffolds with sustained-release Alendronate and its application in oral implant surgery for osteoporosis patients is a current hot topic in oral bone tissue engineering research.
OBJECTIVE: To prepare alendronate/chitosan/polyvinyl alcohol composite hydrogel film and characterize its sustained release properties.
METHODS: (1) Chitosan/polyvinyl alcohol composite hydrogel films with varying mass ratios (mass ratios of chitosan and polyvinyl alcohol were 3:7, 5:5, and 7:3, respectively), chitosan and polyvinyl alcohol hydrogel films were prepared using a physical crosslinking method. By characterizing the morphology, water contact angle, mechanical properties, swelling rate, and cell compatibility of the hydrogel film, a suitable hydrogel film was screened as a carrier of alendronate. (2) Chitosan/polyvinyl alcohol composite hydrogel films containing 0, 0.4, 1.2, and 2.0 mg/L alendronate were prepared, and rat bone marrow mesenchymal stem cells were co-cultured with the four groups of hydrogel films. The cytocompatibility of the hydrogel films was detected by CCK-8 assay and CD44 immunofluorescence staining. The drug-loaded chitosan/polyvinyl alcohol composite hydrogel films were immersed in PBS. The drug release performance of the composite hydrogel films was detected by ultraviolet-visible spectroscopy.
RESULTS AND CONCLUSION: (1) The characterization results showed that with the increase of the mass of polyvinyl alcohol in the hydrogel film, the structural density of the hydrogel film increased, the porosity decreased, the water contact angle (all within 90°), the elongation at break and the compressive strength increased, and the equilibrium swelling rate decreased. It had no effect on the proliferation of rat bone marrow mesenchymal stem cells. Chitosan hydrogel film could promote the adhesion of rat bone marrow mesenchymal stem cells. The 3:7 and 5:5 ratio composite hydrogel films did not affect the adhesion of rat bone marrow mesenchymal stem cells. Polyvinyl alcohol hydrogel film and 7:3 ratio composite hydrogel film inhibited the adhesion of rat bone marrow mesenchymal stem cells. Based on the above results, the 5:5 composite hydrogel film was selected as the carrier of alendronate. (2) CCK-8 assay results showed that the composite hydrogel film containing 0.4 and 1.2 mg/L alendronate had no cytotoxicity. CD44 immunofluorescence staining results showed that the composite hydrogel film containing 0.4 mg/L alendronate did not affect the adhesion of rat bone marrow mesenchymal stem cells, while the composite hydrogel film containing 1.2 and 2.0 mg/L alendronate inhibited the adhesion of rat bone marrow mesenchymal stem cells. Chitosan/polyvinyl alcohol composite hydrogel film containing 0.4, 1.2, and 2.0 mg/L alendronate released alendronate in the first 6 hours, and then released alendronate evenly and stably, with a release time of more than 96 hours. (3) The results showed that the chitosan/polyvinyl alcohol composite hydrogel film with a ratio of 5:5 had good physical and chemical properties and cytocompatibility, and could be used as a sustained-release carrier of alendronate. 

Key words: alendronate, chitosan, polyvinyl alcohol, hydrogel, composite hydrogel film, implant

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