Journal
BULLETIN OF EXPERIMENTAL BIOLOGY AND MEDICINE
Volume 149, Issue 5, Pages 659-662Publisher
SPRINGER
DOI: 10.1007/s10517-010-1018-9
Keywords
granulomatosis; silicotuberculosis; fibroblasts; fibrotic depositions; liver
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The stimulating effect of silicon dioxide on fibroblast proliferation in granulomas of male CBA mice surpasses that of BCG vaccine mycobacteria. The number of fibroblasts in granulomas after combined treatment with BCG and SiO2 increased by more than 3 times compared to individual treatment with BCG and by 2 times compared to treatment with SiO2 alone. In silicosis and silicotuberculosis, collagen and argyrophilic fibers in granulomas during the period from 4 to 6 months after administration of granulomogenic factors occupied more than 90% granuloma volume, which 3-fold surpassed the corresponding parameter in mice infected with BCG vaccine alone. In silicosis, pronounced fibrosis was determined by relatively high proliferative and synthetic activities of fibroblasts, while in silicotuberculosis it was achieved due to significantly higher proliferative activity against the background of lower synthetic activity.
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