nervous system
• mice exhibit widely splayed neural folds unlike wild-type mice
|
• the lumen of the lower spinal neural tube is expanded, particularly in the ventral half of the spinal cord, compared to in wild-type mice
• unlike in wild-type mice, some mice exhibit closed thoracolumbar neural tube that is not enclosed within the bony vertebral column
• mice exhibit a reduction in dorso-lateral bending with small dorso-lateral hinge in the sections immediately adjacent to the closed neural tube and straight neural folds are observed more caudally unlike in wild-type mice
• however, cell proliferation and apoptosis in the neuroepithelium is normal at E9.5
• expression of neural tube markers is ventralized compared to in wild-type mice
|
• reduced thickness
|
• at the 24 to 27 somite stage, 22% of mice fail to close at the forebrain-midbrain boundary unlike in wild-type mice
|
• 65% of mice exhibit lumbosacral spina bifida aperta
|
• in 8% of mice
|
• from the 17-somite stage, posterior neuropores are enlarged compared to in wild-type mice
|
• at the 27-somite stage, 72% of mice exhibit open posterior neuropores compared to 25% of wild-type mice
|
exencephaly
(
J:147584
)
• in 37% of mice
|
limbs/digits/tail
• some digits are bifurcation or duplication of digit one, or full or partial duplication of another digit unlike in wild-type mice
|
clinodactyly
(
J:147584
)
• the first digit is bent backwards unlike in wild-type mice
|
polydactyly
(
J:147584
)
• often mice exhibit preaxial polydactyly on fore and hind limbs with 6 or 7 digits unlike in wild-type mice
• 68% of mice exhibit polydactyly
|
skeleton
• at E18.5 in some mice
|
• at E15.5, mice exhibit widely spaced cartilage primordial of the developing vertebrae unlike in wild-type mice
• at E18.5, vertebrae in the thoracolumbar region are splayed in some mice unlike in wild-type mice
|
• in 8% of mice
|
homeostasis/metabolism
• mice exhibit edema in the tissues surrounding the lower spinal neural tube unlike wild-type mice
• 58% of mice exhibit edema
|
embryo
• the lumen of the lower spinal neural tube is expanded, particularly in the ventral half of the spinal cord, compared to in wild-type mice
• unlike in wild-type mice, some mice exhibit closed thoracolumbar neural tube that is not enclosed within the bony vertebral column
• mice exhibit a reduction in dorso-lateral bending with small dorso-lateral hinge in the sections immediately adjacent to the closed neural tube and straight neural folds are observed more caudally unlike in wild-type mice
• however, cell proliferation and apoptosis in the neuroepithelium is normal at E9.5
• expression of neural tube markers is ventralized compared to in wild-type mice
|
• reduced thickness
|
• at the 24 to 27 somite stage, 22% of mice fail to close at the forebrain-midbrain boundary unlike in wild-type mice
|
• 65% of mice exhibit lumbosacral spina bifida aperta
|
• in 8% of mice
|
• from the 17-somite stage, posterior neuropores are enlarged compared to in wild-type mice
|
• at the 27-somite stage, 72% of mice exhibit open posterior neuropores compared to 25% of wild-type mice
|
growth/size/body
• 65% of mice exhibit lumbosacral spina bifida aperta
|