Preparation of magnetic poly D, L-lactide-co-glycolide oxymatrine nanoparticles and their preventive effect against liver fibrosis in mice
10.3724/SP.J.1008.2009.00500
- Author:
Zhi-Wu ZHENG
1
Author Information
1. Department of Gastroenterology
- Publication Type:Journal Article
- Keywords:
L-lactic co-glycolide acid;
Liver fibrosis;
Magnetic nanoparticles;
Oxymatrine;
Poly D
- From:
Academic Journal of Second Military Medical University
2010;30(5):500-504
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To prepare magnetic poly D, L-lactide-co-glycolide oxymatrine nanoparticle(M-PLGA-OM-NP) and investigate its preventive effects against experimental liver fibrosis. Methods: The M-PLGA-OM-NP was prepared by multiple emulsion process and observed by transmission electron microscope(TEM). Dimethylnitrosamine (DMN)-induced liver fibrosis was established with mice. After intervention with M-PLGA-OM-NP, the expression of α-smooth muscle actin (a-SMA) in the livers of mice was detected by immunohistochemical assay and the score of liver fibrosis was determined by H-E staining and Van Gieson (VG) staining. Results: The prepared M-PLGA-OM-NP was in a regular sphere shape, with a mean diameter of 146.5 nm; the drug loading was 7.61% and the encapsulation ratio was 44.8%. The serum Alt level in the M-PLGA-OM-NP group was decreased compared with that in the model group. Light microscopy revealed that the fibrosis in the M-PLGA-OM-NP group was greatly improved compared with the model group and pure oxymatrine group. The expression of a-SMA, the marker of hepatic stellate cell activation, was obviously decreased in the M-PLGA-OM-NP group compared with that in the other groups.Conclusion: The prepared M-PLGA OM-NP under magnetic field can reinforce the preventive effect of oxymatrine against DMNinduced experimental liver fibrosis in mice. Conclusion: The prepared M-PLGA-OM-NP under magnetic field can reinforce the preventive effect of oxymatrine against DMNinduced experimental liver fibrosis in mice.
