Word: marrows
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Michael Bungo, director of the Space Biomedical Research Institute at Houston's Johnson Space Center, is not so sure. "This is just one test case," he says. "The margin of error is considerable." The validity of the 5% figure, Bungo believes, also depends on whether bone-marrow testing was done at the preferred point -- the spine -- or at the heel bone, which he says the Soviets have done in the past. Besides, while total calcium loss may have been low, he is concerned that there still may be structural changes in Romanenko's bones that could make them more prone...
Gale arrived in Rio on Oct. 17. By then some of the patients' radiation- ravaged bone marrow could not produce sufficient immune cells to fight off ever present bacteria. Doctors battled soaring fevers, infection and internal bleeding with sophisticated antibiotics and clotting agents. At Chernobyl, Gale and Selidovkin had tried to save severely affected technicians and fire fighters with bone-marrow transplants. The medical team in Rio decided against that surgical tactic, in part because the patients' bone marrow had not been irreversibly destroyed and because, from the nature of their exposure, some of the sickest patients had become radioactive...
...introduced into their bodies. Here the irradiation was both incorporated and local." Leide das Neves Ferreira, 6, who had eaten a cesium-tainted sandwich, continued to emit 25 rads a day, even after repeated efforts at decontamination. At that rate, the radioactivity in her body was destroying her bone marrow before it could produce white blood cells...
...result, the doctors decided to try an untested therapy on Leide and five other patients who were likely to die. With Gale's guidance, they attempted to revitalize the irradiated bone marrow. GM-CSF, or granulocyte- macrophage colony-stimulating factor, is one of at least five hormones that boost the production of white blood cells in the marrow. In cancer patients, CSFs seem to offset the deleterious effects of radiation and chemotherapy on the marrow, thus making larger doses safer to use. Gale wondered if the hormones would work the same magic on people who had been accidentally irradiated...
...addition to the nation's largest center for pediatrics will house improved facilities for cardiac surgery, bone marrow transplants, neo-natal care, and organ transplants, according to physician-in-chief David G. Nathan...