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- W2188769091 abstract "In this study, we searched for optimal time points for evaluation of the inflammatory effect of micro and nanoparticles in mice. Airway inflammation of the standard quartz SRM1878a and a sample of ground SRM1878a were studied after a single intratracheal instillation of 50μg in mice. Inflammation and cell damage were evaluated from inflammatory cells, the cytokines TNF-alfa, IL1beta, MIP-2, KC, IL-6 and MCP-1, total protein and lactate dehydrogenase in bronchoalveolar lavage fluid (BALF), as well as from histopathology. Evaluations for acute effects were at 1-48 hours and for sub-chronic effects at three months after instillation of particles. For both samples, neutrophils in BALF were significantly increased reaching maximum levels 16 hours after instillation. Little effect was seen on the number of macrophages. The cytokines MIP-2, KC, TNF-alfa, IL-1beta and IL-6 all showed an increase after exposure, and reached maximum levels 8-16 hours after instillation, whereas MCP-1 was not detected at any time points. The concentration of total protein in the BALF showed a minor increase after instillation of the nSRM1878a, but was not affected was by instillation of SRM1878a. None of the samples caused cell damage as assessed by the lactate dehydrogenase levels in the BALF. The histopathological evaluation showed no clear tissue damage at any time of the study." @default.
- W2188769091 created "2016-06-24" @default.
- W2188769091 creator A5040002945 @default.
- W2188769091 date "2009-01-01" @default.
- W2188769091 modified "2023-10-12" @default.
- W2188769091 title "Inflammatory effects of nanoparticles in lungs of mice" @default.
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