...
首页> 外文期刊>Materials science & engineering >Water-stable and finasteride-loaded polyvinyl alcohol nanofibrous particles with sustained drug release for improved prostatic artery embolization - In vitro and in vivo evaluation
【24h】

Water-stable and finasteride-loaded polyvinyl alcohol nanofibrous particles with sustained drug release for improved prostatic artery embolization - In vitro and in vivo evaluation

机译:具有持续药物释放的水稳态和过滤的聚乙烯醇纳米纤维颗粒,用于改善前列腺动脉栓塞 - 体外和体内评价

获取原文
获取原文并翻译 | 示例
           

摘要

Prostatic artery embolization (PAE) has been a well-established treatment for benign prostatic hyperplasia (BPH). To enhance the therapeutic efficacy, a strategy is to use embolic agent preloaded with 5 alpha-reductase inhibitors for localized drug delivery. In this study, finasteride (FNS) was encapsulated into the polyvinyl alcohol (PVA) nanofibers via co-electrospinning technique, followed by heat treatment and cryogenic grinding to convert them into nanofibrous particles as a drug-loaded embolic agent. The FNS was found to be distributed uniformly in PVA nanofibers, and the processed FNS/PVA nanofibrous particles were 272 mu m in mean particle size. Besides, the studies on the composition, thermal properties, swelling ratio, and water stability of the nanofibers and drug showed that the FNS remained its crystalline state in PVA nanofibers. The heat treatment increased the crystallinity of nanofibers and rendered them water stability. Both FNS and PVA possessed excellent thermal stability at high temperature (150 degrees C). In addition, in vitro drug release studies suggested the FNS followed a favorable sustained release up to 744 h. Furthermore, the cell viability and hemocompatibility assays indicated the nanofibers possessed excellent cytocompatibility and with no evidence of hemolysis. More importantly, the in vivo PAE procedures on beagles demonstrated the crosslinked FNS/PVA nanofibrous particles exhibited higher embolization efficacy with more obvious prostate volume (PV) reduction compared to crosslinked PVA nanofibrous particles after embolization for 1, 3, and 6 months (P 0.05). Therefore, such drug-loaded PVA nanofibrous particles combined physical embolization and localized medical therapy together, which offer great potential to be used as an effective embolic agent for BPH therapy.
机译:前列腺动脉栓塞(PAE)是良性前列腺增生(BPH)的良好治疗方法。为了提高治疗效果,策略是使用预载与5个α-还原酶抑制剂的栓塞剂进行局部药物递送。在该研究中,通过共静电素技术将三甾醇(FNS)包封在聚乙烯醇(PVA)纳米纤维中,然后进行热处理和低温研磨以将它们转化为纳米纤维颗粒作为药物栓塞剂。发现FNS在PVA纳米纤维中均匀地分布,并且加工的FNS / PVA纳米纤维颗粒在平均粒度为272μm。此外,纳米纤维和药物的组成,热性质,溶胀比和水稳定性的研究表明,FNS在PVA纳米纤维中保持其结晶状态。热处理增加了纳米纤维的结晶度并使其稳定性。 FNS和PVA均在高温(150℃)下具有出色的热稳定性。此外,体外药物释放研究表明FNS遵循良好的持续释放,高达744小时。此外,细胞活力和血液相位性测定表明纳米纤维具有优异的细胞织立性,并且没有溶血的证据。更重要的是,在珠子上的体内PAE程序证明交联的Fns / PVA纳米纤维颗粒表现出更高的栓塞功效,与栓塞化后1,3和6个月后的交联PVA纳米纤维颗粒相比具有更明显的前列腺体积(PV)(PV)(PV)(P < 0.05)。因此,这种药物负载的PVA纳米纤维颗粒组合了物理栓塞和局部医疗疗法,这提供了用作BPH疗法的有效栓塞剂的潜力。

著录项

  • 来源
    《Materials science & engineering》 |2020年第10期|111107.1-111107.15|共15页
  • 作者单位

    Huazhong Univ Sci & Technol Coll Life Sci & Technol Dept Biomed Engn Wuhan 430074 Peoples R China;

    Huazhong Univ Sci & Technol Tongji Hosp Tongji Med Coll Dept Radiol Wuhan 430030 Peoples R China;

    Huazhong Univ Sci & Technol Coll Life Sci & Technol Dept Biomed Engn Wuhan 430074 Peoples R China;

    Huazhong Univ Sci & Technol Coll Life Sci & Technol Dept Biomed Engn Wuhan 430074 Peoples R China;

    Huazhong Univ Sci & Technol Coll Life Sci & Technol Dept Biomed Engn Wuhan 430074 Peoples R China;

    Univ Texas Southwestern Med Ctr Dallas Dept Radiol Dallas TX USA;

    Donghua Univ Coll Mat Sci & Engn State Key Lab Modificat Chem Fibers & Polymer Mat Int Joint Lab Adv Fiber & Low Dimens Mat Shanghai 201620 Peoples R China;

    Huazhong Univ Sci & Technol Tongji Hosp Tongji Med Coll Dept Radiol Wuhan 430030 Peoples R China;

    Huazhong Univ Sci & Technol Coll Life Sci & Technol Dept Biomed Engn Wuhan 430074 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Prostatic artery embolization; Electrospinning; Polyvinyl alcohol; Embolic agent; Drug delivery;

    机译:前列腺动脉栓塞;静电纺丝;聚乙烯醇;栓塞剂;药物递送;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号