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Phenotypes Associated with This Genotype
Genotype
MGI:2663178
Allelic
Composition
Chrnb4tm1Mdb/Chrnb4tm1Mdb
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Chrnb4tm1Mdb mutation (2 available); any Chrnb4 mutation (27 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
renal/urinary system
• focal hyperplasia or dysplasia is noted in 3 of 4 animals and mitotic activity in 2 of 4 animals
• in response to nicotine, contraction in bladder strips was greatly reduced whereas contraction was easily induced in controls (J:73590)
• contractile responses to nicotine in bladder strips from 2- to 5-day-old mutant mice are severely attenuated, despite the absence of bladder distension and urine retention phenotype seen in Chrna3 mutant mice (J:102601)


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
03/25/2025
MGI 6.24
The Jackson Laboratory