mortality/aging
• about 80% die shortly after birth and about 20% survive to adulthood
• neonatal lethality can be prevented by prenatal maternal myo-inositol supplement
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respiratory system
atelectasis
(
J:102665
)
• air sacs of all but one are closed/collapsed in neonates and at E18.5, however the structure of the lungs appears well developed
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• die of respiratory failure soon after birth
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nervous system
• other peripheral nerves, including the branchial plexus and intercostal nerves, are underdeveloped at E18
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• underdeveloped at E18.5
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• underdeveloped at E18.5
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• reduced number and size of the phrenic nerve is evident at E13.5
• in 12 of 47, only the left side phrenic nerve is present, in 1 of 47, only the right side phrenic nerve is present and in 6 of 47, both nerves are present at E18.5
• when present, the phrenic nerve shows fewer branches
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• phrenic nerve is absent in 27 of 47 homozygotes at E18.5
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• nerve conduction velocity of the sciatic nerve at 10 weeks of age is dramatically reduced, although exhibit normal gait
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homeostasis/metabolism
growth/size/body
• fetuses are slightly smaller than E18.5 wild-type fetuses
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