Surfactant protein D enhances Pneumocystis infection in immune-suppressed mice.
Surfactant protein D enhances Pneumocystis infection in immune-suppressed mice.
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表面活性剂蛋白 D 可增强免疫抑制小鼠的肺孢子虫感染。
DOI:
10.1152/ajplung.00112.2005
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发表时间:
2006
期刊:
影响因子:
--
通讯作者:
Limper,AndrewH
中科院分区:
文献类型:
--
作者:
Vuk-Pavlovic,Zvezdana;Mo,EunK;Icenhour,CrystalR;Standing,JosephE;Fisher,JamesH;Limper,AndrewH
To further determine the role of surfactant protein (SP)-D in the pathogenesis ofPneumocystispneumonia, a mouse model of transgenic overexpression (OE) of SP-D was studied. These animals produce roughly 30- to 50-fold greater SP-D than their wild-type (WT) counterparts but show no other differences in lung morphology and function. Animals in both the SP-D OE and WT groups were depleted of CD4 lymphocytes with weekly injections of GK1.5 antibody, beforePneumocystisinoculation, and throughout the subsequent infection period. At various time points, mice were killed and analyzed for inflammatory parameters and organism burden. Proinflammatory cytokines in bronchoalveolar lavage fluid were elevated throughout the period of infection, with OE animals exhibiting significantly higher levels of TNF-α and macrophage inflammatory protein-2 compared with WT controls. The total number of cells in the lavage fluid was also increased significantly only in the OE group, whereas the cell differential composition demonstrated lymphocyte and eosinophil infiltration in both groups of animals. Significantly, the organism burden was markedly higher in the SP-D OE animals, whereas the WT mice demonstrated little alteration in organism number over the course of infection. These results further indicate that SP-D facilitates the development ofPneumocystisinfection and related lung inflammation in an immunosuppressed mouse model.
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DOI:
10.1172/jci117972
发表时间:
1995
期刊:
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作者:
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