• J. Exp. Med. · Nov 2008

    Pulmonary alveolar proteinosis caused by deletion of the GM-CSFRalpha gene in the X chromosome pseudoautosomal region 1.

    • Margarita Martinez-Moczygemba, Minh L Doan, Okan Elidemir, Leland L Fan, Sau Wai Cheung, Jonathan T Lei, James P Moore, Ghamartaj Tavana, Lora R Lewis, Yiming Zhu, Donna M Muzny, Richard A Gibbs, and David P Huston.
    • Department of Medicine, Texas A&M College of Medicine, Texas A&M Health Science Center, Houston, TX 77030, USA.
    • J. Exp. Med. 2008 Nov 24; 205 (12): 2711-6.

    AbstractPulmonary alveolar proteinosis (PAP) is a rare lung disorder in which surfactant-derived lipoproteins accumulate excessively within pulmonary alveoli, causing severe respiratory distress. The importance of granulocyte/macrophage colony-stimulating factor (GM-CSF) in the pathogenesis of PAP has been confirmed in humans and mice, wherein GM-CSF signaling is required for pulmonary alveolar macrophage catabolism of surfactant. PAP is caused by disruption of GM-CSF signaling in these cells, and is usually caused by neutralizing autoantibodies to GM-CSF or is secondary to other underlying diseases. Rarely, genetic defects in surfactant proteins or the common beta chain for the GM-CSF receptor (GM-CSFR) are causal. Using a combination of cellular, molecular, and genomic approaches, we provide the first evidence that PAP can result from a genetic deficiency of the GM-CSFR alpha chain, encoded in the X-chromosome pseudoautosomal region 1.

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