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  • Title: Cortico-adrenal function under simulated weightlessness during gestation in the rat--effects on fetal development.
    Author: Gharbi N, El Fazaa S, Fagette S, Gauquelin G, Gharib C, Kamoun A.
    Journal: J Gravit Physiol; 1996 Apr; 3(1):63-8. PubMed ID: 11539309.
    Abstract:
    To examine the effects of simulated weightlessness on cortico-adrenal function and on fetal development, we suspended pregnant rats for 20 days. The levels of adrenal and plasma corticosterone were examined in mothers and in fetuses. The animal control group was kept single in standard cages. Growth of the suspended animals was repressed for the first 8 days of the experiment, but thereafter it increased greatly, as did the daily food intake. By the 18th day of the experiment, the body masses and food intake of the two groups were equal. No modification in circulating corticosterone was found. It appears that there is no stress in pregnant rats submitted to simulated weightlessness.
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