mortality/aging
• incomplete penetrance; many animals die within the first 24 hours after birth
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• incomplete penetrance; many embryos die between E12.5-E15.5 and become necrotic
• at stages after E16.5, only 12% of the embryos are homozygous mutants
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renal/urinary system
• the glomerular capillary tuft sometimes appears as a capillary aneurysm-like structure that releases red blood cells into the Bowman's capsule
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• at E15.5, an increased number of apoptotic cells was observed in the kidney
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• at E15.5, no proliferating cells were observed inside the abnormal glomeruli whereas these cells were detected in control mice
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• vascular lesions evident at the cortical surface
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• cells that expressed markers of podocyte differentiation were clumped together in the center of the glomerulus, and did not form the cup-shaped epithelial layer observed in the controls
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• at E16.5, no morphologically normal glomeruli present
• frequently, the glomerulus appears as a disorganized clump of cells
• the glomerular capillary tuft sometimes appears as a capillary aneurysm-like structure that releases red blood cells into the Bowman's capsule
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• few endothelial cells were present in the abnormal mutant glomeruli
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• absence of cells that express markers of mesangial cell differentiation in the abnormal glomeruli
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small kidney
(
J:67157
)
• at E16.5, kidneys were smaller than controls
|
cardiovascular system
• few endothelial cells were present in the abnormal mutant glomeruli
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• aberrant bulbous structure at the terminus of the hyaloid artery, with many small capillaries emanating from it
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• the glomerular capillary tuft sometimes appears as a capillary aneurysm-like structure that releases red blood cells into the Bowman's capsule
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• reduced myocardial trabeculation evident by E12.5 and thereafter
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• in embryos surviving past E11.5, myocardial hypoplasia is evident, with hemorrhaging and edema
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• 40% of embryos exhibited pericardial effusion at E11.5
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hemorrhage
(
J:67157
)
• 40% of embryos exhibited widespread hemorrhaging at E11.5; also evident in later embryonic stages
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vision/eye
• pronounced asymmetry of the eyes
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• aberrant bulbous structure at the terminus of the hyaloid artery, with many small capillaries emanating from it
|
• retrolenticular hyperplasia
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• bilateral
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homeostasis/metabolism
• 40% of embryos exhibited pericardial effusion at E11.5
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skin edema
(
J:67157
)
• 50% of embryos at E13.5 showed edema and hemorrhaging vessels near skin surface
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growth/size/body
• by E11.5, 40% of embryos showed growth retardation
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liver/biliary system
• bile duct epithelial cell differentiation defects occur
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muscle
• reduced myocardial trabeculation evident by E12.5 and thereafter
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embryo
• by E11.5, 40% of embryos showed growth retardation
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endocrine/exocrine glands
• bile duct epithelial cell differentiation defects occur
|
integument
skin edema
(
J:67157
)
• 50% of embryos at E13.5 showed edema and hemorrhaging vessels near skin surface
|
cellular
• absence of cells that express markers of mesangial cell differentiation in the abnormal glomeruli
|
• at E15.5, an increased number of apoptotic cells was observed in the kidney
|
• at E15.5, no proliferating cells were observed inside the abnormal glomeruli whereas these cells were detected in control mice
|