Morphological surface changes in the terminal bronchiolar region of NO/sub 2/-exposed rat lung
Journal Article
·
· Environ. Res.; (United States)
OSTI ID:6288881
Lungs of 1-month-old rats, exposed to 15 ppM NO/sub 2/ for 1, 2, or 7 days were scanned via electron microscopy. Loss of cilia from terminal bronchiolar epithelium, more brush cells, more macrophages and more debris after 24 hr were observed. Proliferation of type 2 and decrease in type 1 cells after 2 days were observed. Smooth, non-ciliated epithelium with blebbing after 7 days was observed. Disruption of the clearing mechanism may be the cause eventual blockage of small airways. Terminal bronchioles normally have a rough appearance whereas the alveolar duct is smooth.
- OSTI ID:
- 6288881
- Journal Information:
- Environ. Res.; (United States), Journal Name: Environ. Res.; (United States) Vol. 6; ISSN ENVRA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560301 -- Chemicals Metabolism & Toxicology-- Cells-- (-1987)
560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
BIOLOGICAL EFFECTS
BODY
CHALCOGENIDES
CLEARANCE
DISEASES
ELECTRON MICROSCOPY
EXCRETION
LUNG CLEARANCE
LUNGS
MAMMALS
MICROSCOPY
MORPHOLOGICAL CHANGES
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
ORGANS
OXIDES
OXYGEN COMPOUNDS
PATHOLOGICAL CHANGES
RATS
RESPIRATORY SYSTEM
RODENTS
VERTEBRATES
560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
BIOLOGICAL EFFECTS
BODY
CHALCOGENIDES
CLEARANCE
DISEASES
ELECTRON MICROSCOPY
EXCRETION
LUNG CLEARANCE
LUNGS
MAMMALS
MICROSCOPY
MORPHOLOGICAL CHANGES
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
ORGANS
OXIDES
OXYGEN COMPOUNDS
PATHOLOGICAL CHANGES
RATS
RESPIRATORY SYSTEM
RODENTS
VERTEBRATES