Pulmonary alveolar proteinosis is a rare disorder in which lipoproteinaceousmaterial accumulates within alveoli.1 The clinical course ofthe disease is variable, ranging from respiratory failure tospontaneous resolution. An important feature of the diseaseis susceptibility to pulmonary infections, sometimes with opportunisticorganisms.
Pulmonary alveolar proteinosis occurs in three clinically distinctforms: congenital, secondary, and acquired. The congenital formcomprises a heterogeneous group of disorders2 caused by mutationsin the genes encoding surfactant protein B or C or the C chainof the receptor for granulocytemacrophage colony-stimulatingfactor (GM-CSF).3,4,5,6,7 Secondary pulmonary alveolar proteinosisdevelops in association with conditions involving functional. . . [Full Text of this Article]
Epidemiology
Clinical, Radiographic, and Laboratory Manifestations
Clinical Presentation
Laboratory Findings
Pulmonary Function
Characteristics of Bronchoalveolar-Lavage Fluid
Pathological Features
Natural History
Surfactant Homeostasis
Mouse Models
GM-CSF and Surfactant Homeostasis
Effect of GM-CSF Replacement
Cellular Target of GM-CSF
Immune Functions of Alveolar Macrophages and GM-CSF
Role of the Transcription Factor PU.1
Lessons from Animal Models
Pathogenesis in Humans
Role of Autoimmunity
Inhibition of Alveolar Macrophages
Role of GM-CSF
Autoantibodies against GM-CSF
Pulmonary Cytokines
Therapeutic Approaches
Current Approaches
GM-CSF Therapy
Conclusions
Source Information
From the Divisions of Pulmonary Biology (B.C.T., J.A.W.) and Neonatology (J.A.W.), Children's Hospital Medical Center, Cincinnati; and the Department of Respiratory Diseases, International Medical Center of Japan, Tokyo (K.N.).
Address reprint requests to Dr. Trapnell at the Division of Pulmonary Biology, Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH 45229, or at bruce.trapnell@cchmc.org.
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