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J Appl Physiol 85: 1429-1433, 1998;
8750-7587/98 $5.00
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Vol. 85, Issue 4, 1429-1433, October 1998

Spaceflight and development of immune responses

Gerald Sonnenfeld1, Mareva Foster1, Darla Morton1, Frederique Bailliard1, Nina A. Fowler1, Anne M. Hakenewerth1, Roge Bates2, and Edwin S. Miller Jr.2

1 Department of General Surgery Research, Carolinas Medical Center, Charlotte, North Carolina 28232-2861; and 2 Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas 79106

The NIH.R1 Space Shuttle experiment was designed to study the effects of spaceflight on rodent development. Pregnant rats were flown on the Space Shuttle for 11 days, and pregnant control rats were maintained in animal enclosure modules in a ground-based chamber under conditions approximating those in flight. Additional controls were in standard housing. The effects of the flight on immunological parameters of dams, fetuses, and pups were determined. Blastogenesis of spleen cells in response to mitogen was inhibited in flown dams but was not inhibited in cells from their pups. Interferon-gamma production by spleen cells showed a trend toward inhibition in flown dams but not in their pups. The response of bone marrow cells to colony-stimulating factor showed a trend toward inhibition after spaceflight in dams, but the response of fetus and pup liver cells was not inhibited. Total serum IgG was not affected by spaceflight. None of the examined immune parameters that were altered in rat dams after spaceflight was found to be altered in their offspring.

antibody; development; cellular immunity


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