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Methylene blue-containing nanoliposomes biological distribution and release after dual frequency sonication

机译:双频声处理后含亚甲基蓝的纳米脂质体的生物分布和释放

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In this study, a technique to overcome the limitation of systemic administration of Methylene (MB), encapsulation of methylene blue in polymeric liposomes and drug release after dual frequency sonication has been investigated. After loading methylene blue into liposomes of the mice, the drug encapsulation efficiency and stability is measured by fluorometrically and its biodistribution of drug is studied. The level of drug release in vitro is checked using single and dual frequency sonication (1MHz+40kHz) with intensity through fluorometrically. The dynamic light scattering (DLS) studies showed that the synthesized liposomes had an average size of 66±5 nm. The results indicate that a 5 min applying the dual frequency sonication causes a MB release of about 79% nanoparticles. The biodistribution study revealed that, the drug content in the group that received liposomal drugs in the tumor tissue was significantly higher than in the group receiving methylene blue in its free form (p<;0.05). Also, for the group that received liposomal MB, the ultrasound measurement showed significantly higher drug content in the tumor tissue than other groups (p<;0.05). It is concluded that the sonication with a dual frequency system causes the drug to release from the liposome and increases drug uptake ability.
机译:在这项研究中,已经研究了克服亚甲基蓝(MB)全身给药,聚合物脂质体中亚甲基蓝的封装以及双频超声处理后药物释放的局限性的技术。将亚甲基蓝负载到小鼠脂质体中后,通过荧光法测定药物的包封效率和稳定性,并研究其在药物中的生物分布。使用单频和双频超声(1MHz + 40kHz)并通过荧光强度检测体外药物释放水平。动态光散射(DLS)研究表明,合成脂质体的平均粒径为66±5 nm。结果表明,应用双频超声处理5分钟会导致MB释放约79%的纳米颗粒。生物分布研究表明,在肿瘤组织中接受脂质体药物治疗的组中的药物含量明显高于接受游离形式亚甲基蓝的组(p <; 0.05)。同样,对于接受脂质体MB的组,超声测量显示肿瘤组织中的药物含量明显高于其他组(p <; 0.05)。结论是,双频超声处理导致药物从脂质体中释放出来,并增加了药物的吸收能力。

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