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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Grntm1Blrl
targeted mutation 1, Blair R Leavitt
MGI:4867226
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Grntm1Blrl/Grntm1Blrl involves: C57BL/6J MGI:4867227


Genotype
MGI:4867227
hm1
Allelic
Composition
Grntm1Blrl/Grntm1Blrl
Genetic
Background
involves: C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Grntm1Blrl mutation (0 available); any Grn mutation (48 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
N
• male mice exhibit normal paired-pulse facilitation and post-tetanic potentiation
• in the hippocampus at 18 months of age in male mice
• in the hippocampus at 18 months of age in male mice
• at branch order 3, the number of nodes in male mice is decreased compared to in wild-type cells
• distance between nodes in male mice is decreased compared to in wild-type cells
• over branch orders 1 through 6, 1 through 6 or 4, apical dendrite length is decreased compared to in wild-type cells
• decreased spine density in the apical dendritic arbor
• male mice exhibit smaller field excitatory postsynaptic potentials compared with wild-type mice

behavior/neurological
N
• mice exhibit normal passive avoidance in a Morris water maze test and depression in a forced swim test
• at 8 months, male mice never attack an intruder male unlike wild-type mice
• at 8 months, male mice spend less time in the center of an open field compared with wild-type mice
• at 8 months, male mice spend less time exploring a novel object compared with wild-type mice
• however, mice exhibit normal total exploration time
• at 8 months, male mice exhibit longer time to learn the rotarod task with shorter latency to fall compared with wild-type mice
• however, female mice exhibit normal motor learning
• at 8 months, male mice exhibit a longer latency to first interaction with an intruder mouse compared with wild-type mice

pigmentation
• in the hippocampus at 8 and 18 months of age in male mice

immune system
• in the hippocampus at 18 months of age in male mice

hematopoietic system
• in the hippocampus at 18 months of age in male mice





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last database update
11/12/2024
MGI 6.24
The Jackson Laboratory