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Exploring the Effects of Spaceflight on Mouse Physiology using the Open Access NASA GeneLab Platform
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Skin Microbial Changes during Space Flights: A Systematic Review.

Pamela Tozzo1, Arianna Delicati1, Luciana Caenazzo1

  • 1Legal Medicine Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, 35121 Padova, Italy.

Life (Basel, Switzerland)
|October 27, 2022
PubMed
Summary

Astronaut skin microbes change during spaceflight, with some bacteria decreasing and others increasing. These shifts may impact astronaut health and the International Space Station

Keywords:
International Space Stationaerospace medicinedermatologyskin microbiomeskin microbiotaspace flight

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Area of Science:

  • Microbiology
  • Space Medicine
  • Dermatology

Background:

  • Spaceflight induces physiological changes, including frequent skin alterations, impacting astronaut health.
  • The skin's barrier function and its resident microbiota are crucial for protection and homeostasis.
  • Understanding skin microbiome shifts is vital for developing preventative health measures during space missions.

Purpose of the Study:

  • To systematically review changes in the skin microbiome of astronauts during spaceflight.
  • To identify specific microbial shifts and their potential implications for astronaut dermatological health.

Main Methods:

  • Conducted a systematic literature review of studies published between 2015 and 2022.
  • Utilized public electronic databases (PubMed, Scopus) for study selection.
  • Followed the 2020 PRISMA guidelines for systematic review methodology.

Main Results:

  • Eight studies were included, revealing temporary skin microbiota alterations.
  • Observed decreased abundance of Gamma- and Betaproteobacteria.
  • Noted increased occurrence of Malassezia, Firmicutes (Staphylococcus, Streptococcus), and altered proportions of Corynebacterium, Staphylococcus, Streptococcus, and Cloacibacterium.

Conclusions:

  • Spaceflight-induced skin microbiome changes may lead to dermatological conditions.
  • Astronaut skin microbiota potentially influences the International Space Station's microbial environment.
  • Further research is needed to fully understand skin microbiota dynamics and prevent spaceflight-related skin issues.