mortality/aging
• surviving female homozygotes often die suddenly during the post-partum period
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• Background Sensitivity: postnatal viability is reduced on the C57BL/6 background compared to the mixed C57BL/6 DBA/2J background
• fewer than 10% of homozygotes survive beyond 4 weeks of age
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cardiovascular system
• at birth on the ventricles of the heart, lesions are seen that consist of focal areas of myofiber degeneration, necrosis, and mineralization
• these lesions first appear on the anterior aspect of the right ventricle near the outflow tract and become larger with age
• extensive necrosis of the anterior free wall and septum are seen by P14
|
• seen at P14
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• seen in 8 week old homozygotes characterized by left ventricular chamber dilation, left atrial enlargement and reduction in contractile function without left ventricular hypertrophy
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• at 8 weeks of age, fractional shortening is reduced to 24 +/- 14% in homozygotes compared to 53 +/- 6% in wild-type mice
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growth/size/body
• by 2 weeks of age homozygotes are about 60% the weight of normal littermates despite having similar birth weights
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muscle
• at birth on the ventricles of the heart, lesions are seen that consist of focal areas of myofiber degeneration, necrosis, and mineralization
• these lesions first appear on the anterior aspect of the right ventricle near the outflow tract and become larger with age
• extensive necrosis of the anterior free wall and septum are seen by P14
|
• seen in 8 week old homozygotes characterized by left ventricular chamber dilation, left atrial enlargement and reduction in contractile function without left ventricular hypertrophy
|
• at 8 weeks of age, fractional shortening is reduced to 24 +/- 14% in homozygotes compared to 53 +/- 6% in wild-type mice
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vision/eye
homeostasis/metabolism
• coronary artery thomboses are occasionally seen proximal to cardiomyocyte degeneration
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integument
waved hair
(
J:96392
)
• the hair shaft is thinner but has normal length
• hair cuticles are normal
|