mortality/aging
• 3% phenylalanine in the water is lethal to young homozygotes, less than 28 days old, but not to older homozygotes, greater than 66 days old
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• several mutants died after 1 year of age from heart pathologies
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cardiovascular system
• in some mutants over 1 year of age calcification of the myocardium in the right atrium and/or ventricle is seen
• calcification is also seen in 3 of 8 young mutants that died after 3% phenylalanine exposure
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cellular
• large pleomorphic mitochondria are seen in hepatocytes from mutants
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• in some mutants over 1 year of age myocyte necrosis is seen
• myocyte necrosis is also seen in 2 of 8 young mutants that died after 3% phenylalanine exposure
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growth/size/body
• male homozygotes weigh slightly less than wild-type or heterozygous males
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weight loss
(
J:91519
)
• 3% phenylalanine in the water results in greater weight loss and growth restriction in male homozygotes compared to wild-type mice
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• kidney weight is greater in homozygotes compared to wild-type mice
• 3% phenylalanine in the water results in an increase in kidney weight in homozygotes but not in wild-type mice
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• on a normal diet liver weight is greater in homozygotes compared to wild-type mice
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hematopoietic system
• 3% phenylalanine in the water results in decreased total white cell counts in mutants but not in wild-type mice
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• spleen weight is significantly decreased in female homozygotes and tends to be decreased in male homozygotes compared to wild-type mice
• 3% phenylalanine in the water results in a dramatic decrease in spleen weight in homozygotes with reduction in both white and red pulp, but an increase in spleen weight in wild-type mice
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immune system
• 3% phenylalanine in the water results in decreased total white cell counts in mutants but not in wild-type mice
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• spleen weight is significantly decreased in female homozygotes and tends to be decreased in male homozygotes compared to wild-type mice
• 3% phenylalanine in the water results in a dramatic decrease in spleen weight in homozygotes with reduction in both white and red pulp, but an increase in spleen weight in wild-type mice
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• in some mutants over 1 year of age chronic inflammation is seen in the heart
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• at 6 weeks and 6 months of age multifocal hepatitis is seen
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liver/biliary system
• large pleomorphic mitochondria are seen in hepatocytes from mutants
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• on a normal diet liver weight is greater in homozygotes compared to wild-type mice
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• at 6 weeks and 6 months of age multifocal hepatitis is seen
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• at 6 months of age 3 of 7 homozygotes show hepatocyte necrosis
• 3 out of 8 homozygotes that died after 3% phenylalanine exposure displayed hepatocyte necrosis
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• 5 out of 8 homozygotes that died after 3% phenylalanine exposure displayed macrovesicular steatosis
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renal/urinary system
• kidney weight is greater in homozygotes compared to wild-type mice
• 3% phenylalanine in the water results in an increase in kidney weight in homozygotes but not in wild-type mice
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