Biological effects of space environmental factors: A possible interaction between space radiation and microgravity

Life Sciences in Space Research
Fumio YatagaiNoriaki Ishioka

Abstract

In the mid-1980s, space experiments began to examine if microgravity could alter the biological effects of space radiation. In the late 1990s, repair of DNA strand breaks was reported to not be influenced by microgravity using the pre-irradiated cells, because the exposure doses of space radiation were few due to the short spaceflight. There were, however, conflicting reports depending on the biological endpoints used in various systems. While almost no attempts were made to assess the possibility that the microgravity effects could be altered by space radiation. This was probably due to the general understanding that microgravity plays a major role in space and works independently from space radiation. Recent ground-based simulation studies focusing on DNA oxidative damage and signal transduction suggested that combined effects of microgravity and space radiation might exist. These studies also implicated the importance of research focusing not only on chromosomal DNA but also on cytoplasm, especially mitochondria. Therefore, we propose a new model which accounts for the combined-effects through the window of cellular responses. In this model, the interactions between microgravity and space radiation might occur during the fol...Continue Reading

Citations

Sep 29, 2019·International Journal of Molecular Sciences·Hiroko IkedaAkihisa Takahashi
Apr 28, 2020·BioMed Research International·Satoshi FurukawaAkihisa Takahashi
Sep 13, 2020·International Journal of Molecular Sciences·Yujie YanWentao Hu
Jan 21, 2021·Life·Anggraeini PuspitasariWalter Tinganelli
May 8, 2021·Journal of Biomedical Materials Research. Part a·Alessandra SalvettiGianni Ciofani
May 11, 2021·Frontiers in Bioengineering and Biotechnology·Fabio CostaElisabetta Albi

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