mortality/aging
• mice die within 1 month of birth because of respiratory distress
|
growth/size/body
• severe dwarfism at P20
|
• all mice develop rapid growth retardation after birth
|
respiratory system
• respiratory distress probably associated with compression of cervical and thoracic vertebrae as a result of kyphosis
|
limbs/digits/tail
• significant reduction in femur cortical bone thickness at P30
|
short limbs
(
J:224370
)
• P0 forelimbs and hindlimbs are shorter than normal
|
skeleton
N |
• mice do not exhibit any marked abnormalities in the skull vault and clavicle, suggesting normal intramembraneous ossification
|
• reduced skeleton size at P0 and P20
|
• significant reduction in femur cortical bone thickness at P30
|
• at P0, representative images of proliferative and hypertrophic zone chondrocytes show disrupted column formation in humeral sections
|
• significant reduction in the length of all long bones (femur, tibia, humerus, radius and ulna) and their respective bony portions at P0
|
• P0 ribcage is smaller than normal
|
• compression of cervical and thoracic vertebrae resulting from kyphosis
|
• vertebrae are shorter than normal
|
• dramatic reduction in femur trabecular bone volume/tissue volume (BV/TV) at P30
|
• Alcian blue stain of P17 and P30 tibial sections indicates delayed formation of the secondary ossification center and reduced subchondral bone
|