辛夷挥发油纳米脂质体的毒性研究

目的评价辛夷挥发油纳米脂质体的急性、亚急性和鼻黏膜局部毒性。方法以昆明种小鼠和SD大鼠为实验对象,辛夷挥发油纳米脂质体通过对小鼠不同剂量和时间灌胃给药,进行急性和亚急性毒性实验;大鼠则经滴鼻给药进行鼻黏膜局部毒性实验。以同量生理盐水灌胃或滴鼻作为对照。实验过程为15d。实验结束时,观察小鼠的一般状况,血常规,肝、肾功能指标,脏器湿重指数和肝、肾组织学改变,以及大鼠鼻黏膜的超微结构改变情况,并与对照组进行比较分析。结果急性毒性实验小鼠经灌胃给药剂量相当于人日用量的222.7倍,未见明显毒性反应。亚急性毒性实验结果显示,辛夷挥发油纳米脂质体各剂量组小鼠的一般情况、血常规、脏器湿重指数及肝、肾组织学改变与对照组类似;肝、肾功能指标检测仅中、大剂量组小鼠尿酸有所降低,大剂量组血清总胆红素有所增高。鼻黏膜局部毒性实验发现,大鼠鼻黏膜超微结构无明显改变。结论辛夷挥发油纳米脂质体经灌胃及鼻腔给药无明显毒性反应。

Toxicity tests of Magnolia biondii Pamp volatile oil nanometer bangosome

Objective To investigate the acute toxicity, subacute toxicity, nasal membrane local toxicity of the Magnolia biondii Pamp volatile oil nanometer bangosome. Methods Kunming mice and SD rats were selected as experimental material. Kunming mice were used in the acute and subacute toxicity tests by intragastric administration of Magnolia biondii Pamp volatile oil nanometer bangosome with different dosage and different time, and SD rats were used in the nasal membrane local toxicity test by nose dropping, while the control group was treated with intragastric administration of or nose dropping with normal saline for the same dosage. The treatment course lasted fifteen days. At the end of the tests, the general condition, routine blood test, function index of live and kidney, organ humid weight index, histological changes of liver and kidney and ultra microstructure change of rat nasal membrane were obtained and compared with the control group. Results In the acute toxicity test, the daily maximum tolerant dosage by intragastric administration was equal to 222.7 times of the clinical routine, with no marked toxic reaction. In the subacute toxicity test, the general condition, blood test, organ humid weight index and histological changes of live and kidney in different dosage groups were similar to the control group. While in the function index of live and kidney, uric acid was stepped down in the middle and large dose groups, and total bilirubin was decreased in the large dose group. The nasal membrane local toxicity test revealed that there was little change in the ultra microstructure of rat nasal membrane.Conclusion The Magnolia biondii Pamp volatile oil nanometer bangosome may have little toxicity by intragastric administration and nose dropping.