Acute lung injury (ALI) is a critical illness but have not effective therapeutic modalities currently where recent studies have revealed anti-inflammatory pleiotropic effects and plaque stabilizing effects of statins so the purpose of this work is preparation of simvastatin loaded nanostructured
lipid carriers (simvastatin-NLCs) and investigation of its efficacy in lung injury mice. The simvastatin- NLCs was prepared by thermal melting-low temperature curing method and the quality evaluation was performed with particle size distribution, encapsulation efficiency, and drug loading.
Sixty C57BL/6 mice were divided into three experimental groups: blank group model group and simvastatin treated group. Simvastatin was administered intraperitoneally immediately after the LPS injection in animals of the treated group at a dose of 20 mg/kg/day. Lung injury degree and the protective
effects of simvastatin against LPS-induced lung injury were assessed at the time-points of 24, 48, and 72 h post injection, and the in vivo efficacy of simvastatin-NLCs on mice was investigated. The average particle size of simvastatin-NLCs was (102.1±42.2) nm, the encapsulation
efficiency was (94.6±2.5)%, and the drug loading was (5.78±0.57)%. After 24 hours of administration, the data shows that simvastatin-NLCs inhibit the levels of IL-6 and TNF-α inflammatory factor in the lungs of mice.
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