Interactions of Mineral Dusts and Lung in a Nonhuman Primate Model: Bituminous Coal Dust

Details

• Personal Author:
  Griffith JW ; Riling SA
• Description:
  Bituminous coal dust was repeatedly placed into one lung lobe of anesthetized Macaca nemestrina monkeys using a flexible fiberoptic bronchoscope. Radiographs taken at 15 day intervals showed a focal radiographic density after 90 days time when a total of 1 gram of dust had been instilled. The radiographic density progressed slightly in size until 12 months by which time 3 grams of dust had been instilled and the animals were euthanized. At necropsy, the only significant gross lesion detected was the focal black pulmonary lesion located at the dust instillation site. Histologically, the lesion was composed of coal dust laden macrophages located primarily within interstitial tissue and interspersed with a slight amount of reticulum and connective tissue fibers. The distribution of coal dust was limited to the instillation site i n the right caudal lung lobe based on radiographic, gross and histologic examination. Bronchoalveolar lavage of both right and left caudal lung lobes was performed 8 times during the 12 month long experiments without significant complications. More macrophages were found in lavage fluid from the right lung than the left, and most macrophages from right lung contained coal dust particles. Based upon a limited physical examination and complete blood count at 15 day intervals the animals remained normal during the experiment. We conclude that the primate lung's response to focal experimental bituminous coal dust resulted in a marked focal increase in pulmonary alveolar macrophages, which can be recovered regularly in high numbers by bronchoalveolar lavage. The model described has significant potential for investigating the pathogenesis of various respirable dust-induced pneumoconioses, for evaluation of new therapeutic approaches, and for refining experimental and clinical diagnostic applications of bronchoalveolar lavage. [Description provided by NIOSH]
• Subjects:
  Animals Dust Laboratories Lung Lung Diseases Occupational Health Respiratory System Respiratory Tract Diseases Safety
• Keywords:
  Animal Studies Author Keywords: Coal Workers Pneumoconiosis Bituminous Coal Coal Dust Disease Model Laboratory Animals Lung Disease Lung Disorders Lung Lavage Fluids Primate Respirable Dust Respiratory Diseases Respiratory System Disorders

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• Series:
  Mining Publications
• ISBN:
  9780873350983
• Publisher:
  Society for Mining, Metallurgy, and Exploration, Inc.
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  Colorado ; OSHA Region 3 ; OSHA Region 8 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  13-25
• NIOSHTIC Number:
  nn:20049397
• Citation:
  Respirable dust in the mineral industries, proceedings of the 3rd symposium on respirable dust in the mineral industries, October 17-19, 1990, Pittsburgh, Pennsylvania. Frantz RL, Ramani RV, eds. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 1991 Jan; :13-25
• Editor(s):
  Frantz RL; Ramani RV
• Federal Fiscal Year:
  1991
• Performing Organization:
  Pennsylvania State University
• Peer Reviewed:
  False
• Source Full Name:
  Respirable dust in the mineral industries, proceedings of the 3rd symposium on respirable dust in the mineral industries, October 17-19, 1990, Pittsburgh, Pennsylvania
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:bdc6e6fdd5e8bc09c1d119ff2e0d351093ce3cf75e2f9d7a1bbfa533805ad38cc0e3611b7f88929d8500e57fbeffed82c0106330b2ba43dde2999c70912de3b0
• Download URL:
  https://stacks.cdc.gov/view/cdc/228371/cdc_228371_DS1.pdf
• File Type:
  [PDF - 5.04 MB ]