Responsible Center: NASA JSC
Grant Monitor: Whitmore, Mihriban
Center Contact: 281-244-1004 mihriban.whitmore-1@nasa.gov
Unique ID: 9396
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Solicitation / Funding Source: 2012 Crew Health NNJ12ZSA002N
Grant/Contract No.: Internal Project
Project Type: GROUND
Flight Program:
TechPort: No |
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Human Research Program Elements: |
(1) SHFH:Space Human Factors & Habitability (archival in 2017)
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Human Research Program Risks: |
(1) Microhost:Risk of Adverse Health Effects Due to Host-Microorganism Interactions
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Human Research Program Gaps: |
(1) Micro-202:Evaluate the contribution of changes in microbial numbers, types, and virulence on the likelihood and consequence of non-infection-based effects on health and performance, including: decrease in cognition/mood/performance/blood-brain barrier (BBB) function related to the change in the gut’s microbiome and gut-brain axis, increase in cardiovascular health risks, effects of change in gut microbiome on metabolism of nutrients, and correlation with inflammation. (2) Micro-401:Test, optimize and validate existing terrestrial or novel technologies that can maintain in-flight microbial counts, types, and virulence at terrestrial equivalent levels.
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Task Description: |
In response to the Human Research Program Risk of Performance Decrement or Crew Illness Due to an Inadequate Food System this work proposes to determine viability of probiotics in potential flight delivery systems and indicate which is optimal given the restrictions of spaceflight. Probiotic benefits include competitive exclusion of pathogens, mucosal stimulation of immune cells, reduced occurrence and duration of cold and flu-like symptoms, and treatment of antibiotic associated diarrhea. The addition of probiotic bacteria to the astronaut diet may provide a safe and natural countermeasure to improve immune function; however, the expected lack of food refrigeration on space missions and the short shelf life of these bacteria may restrict their use. This work will compare the viability of 1) probiotics provided in a capsule to 2) probiotics mixed with nonfat dry milk (NFDM) powder through eight months of storage at three temperatures and challenge with simulated gastric and small intestinal juice. Viability results will indicate the optimal delivery method for probiotic bacteria in spaceflight. |
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