...
首页> 外文期刊>Journal of Microencapsulation: Microcapsules Liposomes Nanoparticles Microcells Microspheres >Enhancement in brain uptake of vitamin D(3)nanoemulsion for treatment of cerebral ischemia: formulation, gamma scintigraphy and efficacy study in transient middle cerebral artery occlusion rat models
【24h】

Enhancement in brain uptake of vitamin D(3)nanoemulsion for treatment of cerebral ischemia: formulation, gamma scintigraphy and efficacy study in transient middle cerebral artery occlusion rat models

机译:脑吸收维生素D(3)纳米乳剂治疗脑缺血的增强:制剂,γ闪烁和疗效研究在短暂的中脑动脉闭塞大鼠模型

获取原文
获取原文并翻译 | 示例
           

摘要

Aim For the treatment of cerebral ischaemia, vitamin-D(3)loaded nanoemulsions were developed. Method Tween 20 and polyethylene glycol were chosen as surfactant/co-surfactant, while oleic acid as the oil phase. The formulation was characterised for variousin-vitroparameters. Targeting efficiency was investigated through radiometry, gamma scintigraphy and efficacy was studied in transient middle cerebral artery occlusion (MCAo) rat model. Result Vitamin D-3-nanoemulsion showed a mean size range of 49.29 +/- 10.28 nm with polydispersity index 0.17 +/- 0.04 and zeta potential 13.77 mV. The formulation was found stable during thermodynamic stability study and permeated within 180 min through sheep nasal mucosa (permeation coefficient 7.873 +/- 0.884 cm/h). Gamma scintigraphy and radiometry assay confirmed better percentage deposition (2.53 +/- 0.17%) of(99m)Tc-vitamin D-3-nanoemulsion through nasal route compared to IV administered(99m)Tc-vitamin D(3)solution (0.79 +/- 0.03%). Magnetic Resonance Imaging (MRI) of the ischaemic model confirmed better efficacy of vitamin D-3-nanoemulsion. Conclusion This work demonstrated better permeation, deposition, and efficacy of vitaminD(3)-nanoemulsion through the intranasal route.
机译:目的为了治疗脑缺血,研制了维生素D(3)纳米乳剂。方法选择吐温20和聚乙二醇为表面活性剂/共表面活性剂,油酸为油相。该配方适用于各种vitroparameters。通过放射测量、伽马闪烁扫描研究靶向效率,并在短暂性大脑中动脉闭塞(MCAo)大鼠模型中研究靶向效率。结果维生素D-3纳米乳剂的平均粒径范围为49.29+/-10.28nm,多分散指数为0.17+/-0.04,zeta电位为13.77mV。在热力学稳定性研究期间,发现该配方稳定,并在180分钟内通过羊鼻粘膜渗透(渗透系数7.873+/-0.884 cm/h)。伽马闪烁扫描和辐射测定证实,与静脉注射(99m)Tc维生素D(3)溶液(0.79+/-0.03%)相比,(99m)Tc维生素D-3纳米乳剂经鼻途径的沉积百分比(2.53+/-0.17%)更好。缺血模型的磁共振成像(MRI)证实维生素D-3纳米乳剂具有更好的疗效。结论vitaminD(3)-纳米乳剂经鼻途径具有更好的渗透性、沉积性和有效性。

著录项

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