ABSTRACT
OBJECTIVE: To study the formulation and technology of dexamethasone solid lipid nanoparticles(DXM-SLN) lyophilized injection and evalnate it's quality. METHODS: The formulation of the supporting agent was optimized and the preparation technology of lyophilized injection was established to prepare the lyophilised injection. The content of DXM in the sample was determined and its quality was investigated as well. RESULTS: 30% mannitol was supporting agent, the particle size of DXM-SLN was 340 nm, with zeta potential at -25.2 mV, entrapment ratio at 92.10% and drug-loading at 7.10%. It was stable within 3 months' at 2～8 ℃storing. CONCLUSION: The preparation technique of this preparation is simple and feasible and its quality is stable and controllable.
ABSTRACT
Objective To investigate the effects of the serum contained Shuluo sterile powder for injection (SLI) on injury induced by anoxia and hypoglycemia in cultured PC12 cells. Methods Cultured PC12 cells were treated with Na2S2O4 and Earle′ s liquid with glucose free to induce models of anoxia and hypoglycemia. The protective effects of the serum contained SLI on the two kinds of models were evaluated by the activity of lactate dehydrogenate (LDH) and staining with MTT assay. Results The serum contained SLI counteracted the injury induced by anoxia and hypoglycemia to various degrees and prevent the efflux of LDH. Conclusion The serum contained SLI can protect PC12 cells from injury induced by anoxia and hypoglycemia.