Document Detail

Ultrastructural alterations observed in mouse lung after prolonged He/O2 exposure.
MedLine Citation:
PMID:  1115691     Owner:  NLM     Status:  MEDLINE    
Three generations of mice were exposed to an atmosphere of 80% helium and 20% oxygen. The parent generation, born and raised in air until the experiment began, was sacrificed in two groups--one after 160 d and the other after 350 d of exposure. The F1 generation, conceived in air, born and raised in an He/O2 environment, was sacrificed after 160 d. The F2 generation, conceived, born, and raised in the He/O2 atmosphere, was sacrificed also in two groups--one after 85 d and the other after 280 d. Lung tissue from these animals was prepared by conventional methods for ultrastructural study. The most obvious alteration observed was the extensive blebbing, possibly indicative of cellular edema, seen in both the capillary endothlium and the alveolar epithelium. In addition, a highly convoluted basement membrane was observed in many areas. There was debris in some of the alveoli and an increase in platelets in the capillaries.
G A Harrison; J D Solomon
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Aviation, space, and environmental medicine     Volume:  46     ISSN:  0095-6562     ISO Abbreviation:  Aviat Space Environ Med     Publication Date:  1975 Jan 
Date Detail:
Created Date:  1975-05-19     Completed Date:  1975-05-19     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  7501714     Medline TA:  Aviat Space Environ Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  21-5     Citation Subset:  IM; S    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Atmosphere Exposure Chambers*
Environment, Controlled
Helium / toxicity*
Lung / drug effects,  ultrastructure*
Oxygen / toxicity*
Pulmonary Alveoli / ultrastructure
Time Factors
Reg. No./Substance:
7440-59-7/Helium; 7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Organ fluid changes and electrolyte excretion of rats exposed to high altitude.
Next Document:  Effects of a multi-hour immersion with intermittent exercise on urinary excretion and tilt table tol...