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- W68753060 abstract "Pneumocystis, an opportunistic fungus, causes pneumonia in immunocompromized hosts. Inflammation is induced, at least partly, by β-eta-glucan, the major component of Pneumocystis cell wall. Airspace-lining epithelial cells recognize glucan by membrane glycosphingolipid (GSL) lactosyl ceramide (LacCer). We treated Pneumocystis-infected mice with two GSL inhibitors: PDMP and NB-DNJ (Miglustat-Actelion Pharmaceuticals). Starting at 8 weeks post infection, animals received either 150 mg PDMP or 1200 mg Miglustat/kg of body weight - dissolved in saline, or equal volume of saline alone (daily i.p. injections for 10 days). Results show that PDMP-treated mice had fewer leukocytes in bronchoalveolar lavage fluid (BALF) than saline-treated controls, with the most marked difference in the number of neutrophils. Interestingly, BALF concentrations of MIP-2 and TNF-alpha (determined by ELISA) did not differ between these two groups. The analysis of Pneumocystis burden in the lung, as determined by Q-PCR, showed decrease in PDMP-treated animals. The anti-inflammatory effects of Miglustat were less pronounced than PDMP effects. Neither inhibitor induced lung injury as measured by albumin leak into airspaces. Results suggest that GSL inhibitors might have an impact on inflammatory response to Pneumocystis, leading to new options in treatment of Pneumocystis pneumonia. Supported by NIH-RO1-HL62150 and Mayo Clinic" @default.
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- W68753060 date "2008-03-01" @default.
- W68753060 modified "2023-10-18" @default.
- W68753060 title "The effects of two glycosphingolipid inhibitors on Pneumocystis ‐induced lung inflammation" @default.
- W68753060 doi "https://doi.org/10.1096/fasebj.22.1_supplement.675.9" @default.
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