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- W2078249356 abstract "Surfactant protein D (SP-D)-deficient (SP-D<sup>−/−</sup>) mice exhibit early development of emphysema. Previously we have shown that SP-D deficiency results in increased production and activity of inducible NO synthase (iNOS). In this study, we examined whether treatment with the iNOS inhibitor 1400W could inhibit the inflammatory phenotype. Mice were treated with 1400W systemically for 7 wk from 3 wk of age. Treatment reduced total lung NO synthase activity to 14.7 ± 6.1% of saline-treated 10-wk-old SP-D<sup>−/−</sup> littermates. Long-term administration of 1400W reduced lung inflammation and cellular infiltration; and significantly attenuated the increased levels of matrix metalloproteinases 2 and 9, chemokines (KC, TARC), and cytokines (IFN-γ) seen in bronchoalveolar lavage (BAL) of SP-D<sup>−/−</sup> mice. Abrogation of these levels was associated with decreasing BAL chemotactic activity for RAW cells. Two weeks of treatment with 1400W reduced total lung NO synthase (NOS) activity to 12.7 ± 6.3% of saline-treated SP-D<sup>−/−</sup> mice. Short-term iNOS inhibition resulted in attenuation of pulmonary inflammation within SP-D<sup>−/−</sup> mice as shown by decreases in total BAL cell count (63 ± 6% of SP-D<sup>−/−</sup> control), macrophage size (>25 μm) within the BAL (62 ± 10% of SP-D<sup>−/−</sup> control), and a percentage of BAL macrophages producing oxidants (76 ± 9% of SP-D<sup>−/−</sup> control). These studies showed that s.c. delivery of 1400W can be achieved in vivo and can attenuate the inflammatory processes within SP-D deficiency. Our results represent the first report linking defects in the innate immune system in the lung with alterations in NO homeostasis." @default.
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- W2078249356 title "Clinical, light, and electron microscopy findings in idiopathic haematuria" @default.
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- W2078249356 doi "https://doi.org/10.1136/jcp.26.10.750" @default.
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