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Retinal changes in rats flown on Cosmos 936 - A cosmic ray experimentTen rats, five centrifuged during flight to simulate gravity and five stationary in flight and experiencing hypogravity, orbited the Earth. No differences were noted between flight-stationary and flight-centrifuged animals, but changes were seen between these two groups and ground controls. Morphological alterations were observed comparable to those in the experiment flown on Cosmos 782 and to the retinal cells exposed to high-energy particles at Berkeley. Affected cells in the outer nuclear layer showed swelling, clearing of cytoplasm, and disruption of the membranes. Tissue channels were again found, similar to those seen on 782. After space flight, preliminary data indicated an increase in cell size in montages of the nuclear layer of both groups of flight animals. This experiment shows that weightlessness and environmental conditions other than cosmic radiation do not contribute to the observed damage of retinal cells.
Document ID
19800057825
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Philpott, D. E.
(NASA Ames Research Center Moffett Field, CA, United States)
Corbett, R.
(NASA Ames Research Center Moffett Field, CA, United States)
Turnbill, C.
(NASA Ames Research Center Moffett Field, CA, United States)
Black, S.
(NASA Ames Research Center Moffett Field, CA, United States)
Dayhoff, D.
(NASA Ames Research Center Moffett Field, CA, United States)
Mcgourty, J.
(NASA Ames Research Center Moffett Field, CA, United States)
Lee, R.
(NASA Ames Research Center Moffett Field, CA, United States)
Harrison, G.
(NASA Ames Research Center Ultrastructural Research Laboratory and Biomedical Research Div., Moffett Field, Calif., United States)
Savik, L.
(Ministerstvo Zdravookhraneniia SSSR Institut Mediko-Biologicheskikh Problem, Moscow, Ussr)
Date Acquired
August 10, 2013
Publication Date
June 1, 1980
Subject Category
Life Sciences (General)
Accession Number
80A41995
Distribution Limits
Public
Copyright
Other

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