mortality/aging
• Background Sensitivity: reduced number of live embryos at E18.5, with all dying within a few minutes after birth, indicating increased survival on the Black Swiss background
|
• mice survive untill birth but die within a few minutes of respiratory failure
|
growth/size/body
short snout
(
J:34604
)
• at E9.5 and E12.5, all organs are morphologically intact but smaller than normal
|
• reduced body size from at least E9.5
(J:61316)
|
• reduced fetal size at E18.5
|
embryo
• at E9.5 and E12.5, all organs are morphologically intact but smaller than normal
|
• reduced body size from at least E9.5
(J:61316)
|
skeleton
• synchondrosis between the basioccipital, exoccipital, and basisphenoid bones due to excessive mineralization
|
• exhibit narrowing of the foramen magnum
|
domed cranium
(
J:34604
)
• reduction in the zone of proliferating cartilage in the growth plate of proximal tibia
• irregular and shorter columns of proliferating chondrocytes in the growth plate of proximal tibia
|
• shorter long bones
|
• synchondrosis between the basioccipital, exoccipital, and basisphenoid bones due to excessive mineralization
|
• hyaline cartilage at E18.5 is composed of hypertrophic chondrocytes surrounded by perichondrial bone
|
• mineralization of bones formed by endochondral replacement is accelerated
|
craniofacial
• synchondrosis between the basioccipital, exoccipital, and basisphenoid bones due to excessive mineralization
|
• exhibit narrowing of the foramen magnum
|
domed cranium
(
J:34604
)
short snout
(
J:34604
)
limbs/digits/tail
short limbs
(
J:34604
)
respiratory system
N |
• at E18.5, mutant lungs show no differences in branching morphogenesis or cellular differentiation of the distal lung relative to wild-type controls
• although mRNA levels for aquaporin-5 (the type I cell-specific water channel) are reduced by 2.6-fold in E18.5 lungs, expression of other peripheral lung markers (including genes specific for alveolar type I and type II cells and fibroblasts) remains normal
|
small lung
(
J:61316
)
• significantly reduced lung size at E18.5
|
atelectasis
(
J:61316
)
• after hysterotomy, mutant E18.5 fetuses fail to inflate their lungs
|
• mice survive untill birth but die within a few minutes of respiratory failure
|
digestive/alimentary system