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Production of thermophilic actinomycete-hay aerosols for use in experimental hypersensitivity pneumonitis.
Burrell R; McCullough MJ
Appl Environ Microbiol 1977 Dec; 34(6):715-719
An investigation of the factors that influence the production of dense aerosols of micropolyspora faeni and thermoactinomyces vulgaris from hay cultures revealed that the density, freshness, and moisture content of the hay were important influences. Dry aerosols were produced under optimum conditions from hay cultures of either actinomycete and from sterile hay for inhalation challenges to unimmunized rabbits. Depressions in arterial oxygen tensions and hemolytic complement were monitored after such challenge. This investigation showed that hay cultures are capable of inciting a hypersensitivity like reaction in the lungs, even in the absence of immunization to the organisms contained within the hay, but the entire hypersensitivity reaction cannot be attributed to m-faeni and t-vulgaris alone. Hay itself or other microbial or chemical components appear to have some heat stable component that possibly contributes to the pathogenesis of the disease.
NIOSH-Grant; NIOSH-Publication; Microorganisms; Pulmonary-system-disorders; Pulmonary-function; Aerosols; Hematology
Robert Burrell, Department of Microbiology, West Virginia University Medical Center, Morgantown, West Virginia 26506
Issue of Publication
Applied and Environmental Microbiology
West Virginia University, Morgantown, West Virginia
Page last reviewed: December 11, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division