how nutrition fuels human space flight - nasa how nutrition fuels human space flight bone muscle...
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How Nutrition Fuels Human Space Flight
BoneMuscleCardio
Fluid/ElectrolyteImmunologyHematology
NeurovestibularEndocrine
GIBHP
Vision
Energy CHO (fiber), Fat, Protein
Fat-soluble vitaminsWater-soluble vitamins
MineralsFluid
Systems
EnergyAmino acids
ProteinSodium
Fatty acidsAntioxidants
Other
BisphosphonatesKCitrate
Other MedsExercise
Other
DurationFood System
RadiationEVA
Schedule
Vehicle/Mission
Space Nutrition
NutrientRequirements
Countermeasures
OperationsResearch
https://ntrs.nasa.gov/search.jsp?R=20150019626 2018-06-16T06:04:37+00:00Z
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FFQ ISS FIT
ISS FIT ISS FIT
ISS FIT Iron/Oxidative Damage/Bone
To
tal
L h
ip B
MD
(%
ch
)
Zwart et al., AJCN, 2013
PreFD15
FD30FD60
FD120
FD180
R+0R+3
0-100
-50
0
50
100
150
200
-50
0
50
100
150Ferritin
8OHdG
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Vitamin D
Pre M
ean
FD15FD30
FD60
FD120
FD180
R+0R+3
0
0
25
50
75
100
125
25(O
H)v
itam
in
D(n
mo
l/L)
Prefli
ght
FD15FD30
FD60
FD120
FD180
R+0R+30
800 IU vitamin D/day will maintain vitamin D status.
Vitamin D
Recycle Filter Tank Assembly
DistillationAssembly
URINE PROCESSOR ASSEMBLY
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iRED ARED
Bone Mineral Density
% p
er
mo
nth
Smith et al, J Bone Miner Res, 2012
Bone Metabolism
iREDARED
Prefli
ght
FD15FD30
FD60
FD120
FD180
NT
X (
% f
rom
pre
flig
ht)
Smith et al, Annu Rev Nutrition, 2014
Prefli
ght
FD15FD30
FD60
FD120
FD180
BS
AP
(%
fro
m p
refl
igh
t)
Breakdown Formation Bone Strength?Fracture risk?
OptimizationExerciseDiet
Forward Work
Intracranial PressureFluid ShiftsCabin CO2
Exercise, Sodium
VIIP One-Carbon Metabolism
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Ho
mo
cy
ste
ine,
mo
l/L
Zwart et al., J Nutrition , 2012
Ho
mo
cys
tein
e,m
ol/L
Cys
tath
ion
ine,
nm
ol/L
2-M
CA
, nm
ol/L
-180 -45 -10 15 30 60 120 180 R+0 R+300
50
100
150
200
250
300
350
Preflight In-fight Postflight
P < 0.001, sig. group effect
Enzyme Polymorphisms
Enzymes Proteins, amino acid strings
assembled from amino acids based on “blueprints”
poly = multiple, “morph” = forms
For many (all?) enzymes, there are small differences in blueprints across the population (e.g., blood types)
MTHFR C677T Polymorphism
% Pop Enz Act.C/C ~35% 100%C/T(T/C) ~50% ~66%T/T ~15% ~50%
Follow-on study:
Five 1C polymorphisms
Expanded biochemistry/metabolomics
Vision and related medical data
n = 70/72 ISS astronauts
MTRR A66G
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MTRR A66G
AA/AG GG
YesVision Issues
NoVision Issues
This line of research may ultimately:
Inform risks of space flight
Inform research/countermeasure options
Have broad application in health and medicine
/B’s
EarthPhysiology Medicine
TechnologyEducation
BoneMuscleCardio
Fluid/ElectrolyteImmunologyHematology
NeurovestibularEndocrine
GIBHP
Vision
Energy CHO (fiber), Fat, Protein
Fat-soluble vitaminsWater-soluble vitamins
MineralsFluid
Systems
EnergyAmino acids
ProteinSodium
Fatty acidsAntioxidants
Other
BisphosphonatesKCitrate
Other MedsExercise
Other
DurationFood System
RadiationEVA
Schedule
Vehicle/Mission
NutrientRequirements
Countermeasures
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SLAMMD
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EVA
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WHC
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Calcium Isotopes
40Ca42Ca48Ca 44Ca46Ca 43Ca
Calcium Isotopes
40Ca42Ca48Ca 44Ca46Ca 43Ca
96.941%0.647%0.187% 0.2086%<0.1% 0.135%
40Ca42Ca48Ca 44Ca46Ca 43Ca
Bone formation favors light Ca isotopes
Calcium Isotopes
Higher δ44Ca = “heavier”
Lower δ44Ca = “lighter”
Calcium Isotopes
40Ca42Ca48Ca 44Ca46Ca 43Ca
Skulan and DePaolo (1999); PNAS
40Ca42Ca48Ca 44Ca46Ca 43Ca
Bone formation favors light Ca isotopes
Calcium Isotopes
No isotope discrimination during bone resorption
30-d bed rest: -0.25 ± 0.07%119-d bed rest: -1.36 ± 0.38%
DXA 119-d bed rest: -1.5 ± 1.0%
Morgan et al., PNAS, 2012
Days
Ch
ang
e in
44
/42 C
a vs
. p
re
-10 0 10 20 30 40-5
-4
-3
-2
-1
0
1
2
Calcium Isotopes
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http://www.nasa.gov/hhp/education