vision/eye
• mutants develop glaucoma phenotypes including elevated intraocular pressure, retinal ganglion cell death, and axonal degeneration resembling primary open angle gluacoma patients
• the chemical chaperone, phenylbutyric acid, which reduces ER stress rescues the glaucoma phenotype
• however, the iridocorneal angle is open and mutants do not exhibit abnormalities of the iris, ciliary body, or cornea
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• progressive structural and functional loss of retinal ganglion cells, with a loss of 17.6% by 3-5 months of age and 30% by 12-14 months of age
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• mutants lose 20.8% of optic nerve axons by 4-5 months of age and 36.1% by 12-14% months of age
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• 12 month old mutants exhibit loss of trabecular meshwork cells
• mutants show rough endoplasmic reticulum distention in trabecular meshwork cells compared to wild-type
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• mutants exhibit a 38.7% reduction in pattern electroretinography (PERG) amplitude at 3-5 months of age and 63.7% reduction at 12-16 months compared to wild-type mice
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• starting at 3 months of age, mutants show an elevation of intraocular pressure (IOP)
• mutants exhibit highest IOP during the night (20.3 mmHg vs. 14.1 mmHg in wild-type)
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nervous system
• progressive neuronal degeneration
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• progressive structural and functional loss of retinal ganglion cells, with a loss of 17.6% by 3-5 months of age and 30% by 12-14 months of age
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• mutants lose 20.8% of optic nerve axons by 4-5 months of age and 36.1% by 12-14% months of age
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• mutants lose 20.8% of optic nerve axons by 4-5 months of age and 36.1% by 12-14% months of age
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cellular
• mutants show rough endoplasmic reticulum distention in trabecular meshwork cells compared to wild-type
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• mutants exhibit induction of endoplasmic reticulum stress
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Mouse Models of Human Disease |
DO ID | OMIM ID(s) | Ref(s) | |
primary open angle glaucoma | DOID:1070 |
OMIM:137760 |
J:178254 |