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Phenotypes Associated with This Genotype
Genotype
MGI:4443030
Allelic
Composition
Bdnftm1Yab/Bdnftm1Yab
Mapttm1(cre)Nagy/Mapt+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bdnftm1Yab mutation (0 available); any Bdnf mutation (42 available)
Mapttm1(cre)Nagy mutation (0 available); any Mapt mutation (430 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice exhibiting zygotic cre expression die within a week of birth
• however, remaining mice survive at least 8 months

nervous system
• slightly at 2 months
• at 2 months
• striatum volume is reduced compared to in wild-type mice
• striatal neurons are smaller than in wild-type mice with smaller cell bodies
• dendritic complexity, number, length, and volume occupied in striatal neurons are reduced compared to in wild-type mice
• dendritic spine densities and total number of spines of striatal neurons are decreased compared to in wild-type mice
• CA1 hippocampal neuron exhibit reduced apical dendrite complexity and reduced proportion of mushroom spines where as mice exhibit an increased in the number of thin spines compared to in wild-type mice
• the optic nerve is hypomyelinated and axonal diameters are reduced compared to in wild-type mice
• however, mice exhibit normal optic nerve cross-sectional area and axon numbers

behavior/neurological
• light/dark exploration is impaired compared to in wild-type mice
• at 8 weeks
• mice exhibit bursts of hyperactivity followed by periods of inactivity that were longer than normal

growth/size/body
• at 8 weeks, male mice are slightly lighter than wild-type mice
• however, by 4 weeks male mice exhibit normal body weight
• by 6 weeks and there after, female mice exhibit mild to severe obesity with a 43% increased in body weight compared with wild-type mice

vision/eye
• the optic nerve is hypomyelinated and axonal diameters are reduced compared to in wild-type mice
• however, mice exhibit normal optic nerve cross-sectional area and axon numbers


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
11/05/2024
MGI 6.24
The Jackson Laboratory