mortality/aging
• all homozygotes die within 24 hrs after birth
• no homozygotes are recovered at 3 weeks of age, independent of genetic background
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behavior/neurological
• homozygous mutant pups fail to suckle, as shown by absence of milk in their stomachs
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craniofacial
• failure of palatal shelves to fuse appears to result from impaired adhesion of the apposing medial edge epithelia (MEE) and subsequent loss of the mid-line epithelial seam
• when fusion did occur, the MEE seam persisted in the mutant mice
|
cleft palate
(
J:29901
)
• newborn homozygotes show a cleft palate phenotype of variable severity and type (anterior vs posterior) that is most severe on a C57BL/6-enriched background
• no associated cleft lip or gross abnormalities in cartilage, bone, brain, heart or other craniofacial structures (e.g. mandible) are observed
• Background Sensitivity: on a 129P2/OlaHsd x C57BL/6 background, 46.7% of homozygotes exhibit a complete cleft palate while 53.3% display only a posterior cleft
• Background Sensitivity: on a 129P2/OlaHsd x CF1 background, 89.3% homozygotes show a posterior cleft palate, 8.7% show anterior clefts (i.e. failure of fusion of primary and secondary palates), and ~2% exhibit complete clefts
• Background Sensitivity: on a 129/Sv x 129P2/OlaHsd background, all homozygotes show only a posterior cleft palate
|
• Background Sensitivity: on a 129P2/OlaHsd x CF1 background, 89.3% homozygotes show a posterior cleft palate, 8.7% show anterior clefts (i.e. failure of fusion of primary and secondary palates), and ~2% exhibit complete clefts
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homeostasis/metabolism
dehydration
(
J:29901
)
• newborn pups become dehydrated shortly after birth
|
respiratory system
• newborn homozygotes display an abnormal terminal airway system
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• newborn pups exhibit gasping at ~4 hrs after birth
|
digestive/alimentary system
• failure of palatal shelves to fuse appears to result from impaired adhesion of the apposing medial edge epithelia (MEE) and subsequent loss of the mid-line epithelial seam
• when fusion did occur, the MEE seam persisted in the mutant mice
|
cleft palate
(
J:29901
)
• newborn homozygotes show a cleft palate phenotype of variable severity and type (anterior vs posterior) that is most severe on a C57BL/6-enriched background
• no associated cleft lip or gross abnormalities in cartilage, bone, brain, heart or other craniofacial structures (e.g. mandible) are observed
• Background Sensitivity: on a 129P2/OlaHsd x C57BL/6 background, 46.7% of homozygotes exhibit a complete cleft palate while 53.3% display only a posterior cleft
• Background Sensitivity: on a 129P2/OlaHsd x CF1 background, 89.3% homozygotes show a posterior cleft palate, 8.7% show anterior clefts (i.e. failure of fusion of primary and secondary palates), and ~2% exhibit complete clefts
• Background Sensitivity: on a 129/Sv x 129P2/OlaHsd background, all homozygotes show only a posterior cleft palate
|
• Background Sensitivity: on a 129P2/OlaHsd x CF1 background, 89.3% homozygotes show a posterior cleft palate, 8.7% show anterior clefts (i.e. failure of fusion of primary and secondary palates), and ~2% exhibit complete clefts
|
growth/size/body
• failure of palatal shelves to fuse appears to result from impaired adhesion of the apposing medial edge epithelia (MEE) and subsequent loss of the mid-line epithelial seam
• when fusion did occur, the MEE seam persisted in the mutant mice
|
cleft palate
(
J:29901
)
• newborn homozygotes show a cleft palate phenotype of variable severity and type (anterior vs posterior) that is most severe on a C57BL/6-enriched background
• no associated cleft lip or gross abnormalities in cartilage, bone, brain, heart or other craniofacial structures (e.g. mandible) are observed
• Background Sensitivity: on a 129P2/OlaHsd x C57BL/6 background, 46.7% of homozygotes exhibit a complete cleft palate while 53.3% display only a posterior cleft
• Background Sensitivity: on a 129P2/OlaHsd x CF1 background, 89.3% homozygotes show a posterior cleft palate, 8.7% show anterior clefts (i.e. failure of fusion of primary and secondary palates), and ~2% exhibit complete clefts
• Background Sensitivity: on a 129/Sv x 129P2/OlaHsd background, all homozygotes show only a posterior cleft palate
|
• Background Sensitivity: on a 129P2/OlaHsd x CF1 background, 89.3% homozygotes show a posterior cleft palate, 8.7% show anterior clefts (i.e. failure of fusion of primary and secondary palates), and ~2% exhibit complete clefts
|