mortality/aging
• remaining mice die during birth or shortly after
|
• most mice die at E16.5
|
skeleton
• at E18.5, mice exhibit hypoplasia of all skeletal elements, including shortened axial and appendicular skeletons, malformed vertebrae, a small pelvic girdle, and a small rib cage
|
• calvarial elements are thin with a defect in suture closure unlike in wild-type mice
|
• mice exhibit a large gap between the atlas and the occipital bone compared with wild-type mice
|
• the foramen magnum is displaced anteriorly compared to in wild-type mice
|
• mice exhibit severe hypoplasia and delayed fusion of the sphenoid, basisphenoid, and basioccipital bones compared with wild-type mice
|
• calvarial elements are thin
|
• small and often incompletely ossified
|
• reduced in size
|
• reduced in size
|
• shortened
|
• 19% to 26%
|
• small
|
• cervical vertebrae ossification is delayed compared to in wild-type mice
|
• mice exhibit a large gap between the atlas and the occipital bone compared with wild-type mice
|
• especially in the manubrium and xiphoid process
|
• mice exhibit a delay in suture closure between frontal and parietal bone compared with wild-type mice
|
craniofacial
• calvarial elements are thin with a defect in suture closure unlike in wild-type mice
|
• mice exhibit a large gap between the atlas and the occipital bone compared with wild-type mice
|
• the foramen magnum is displaced anteriorly compared to in wild-type mice
|
• mice exhibit severe hypoplasia and delayed fusion of the sphenoid, basisphenoid, and basioccipital bones compared with wild-type mice
|
• calvarial elements are thin
|
• small and often incompletely ossified
|
• mice exhibit midfacial hypoplasia compared with wild-type mice
|
cardiovascular system
• at E16.5, the yolk sac lacks a clear vasculature and is devoid of blood unlike in wild-type mice
|
• thickened at E14.5
|
• seen as early as E14.5 and up to E18.5 and varied in severity
|
• seen in two mutant embryos at E18.5
|
• thickened at E14.5
|
hematopoietic system
• at E14.5, mice exhibit an increase in basophilic erythroblasts and a decrease in mature erythroblasts compared with wild-type mice
• however, mice exhibit a normal pattern of erythroid differentiation at E16.5
|
• 27% at E16.5
|
• 23% at E16.5
|
• 37% at E16.5
|
growth/size/body
• mice exhibit midfacial hypoplasia compared with wild-type mice
|
• surviving mice are smaller than normal at birth
|
• the sternum is bent inward unlike in wild-type mice
|
embryo
• at E16.5, the yolk sac lacks a clear vasculature and is devoid of blood unlike in wild-type mice
|
• at E16.5, mice that die prior to birth exhibit pale placenta unlike wild-type mice
|
nervous system
• mcie exhibit brain overgrowth compared with wild-type mcie
|
• enlarged
|
• some mice exhibit bulging of the spinal cord at the gap between the atlas and occipital bone unlike in wild-type mice
|
muscle
• at E18.5, the lumbar and sternal muscle portions of the diaphragm are absent and the remaining costal portions are very thin compared to in wild-type mice
|
respiratory system
• reduced in size
|
• reduced in size
|
Mouse Models of Human Disease |
DO ID | OMIM ID(s) | Ref(s) | |
Wolf-Hirschhorn syndrome | DOID:0050460 |
OMIM:194190 |
J:149673 |