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Phenotypes Associated with This Genotype
Genotype
MGI:5905888
Allelic
Composition
A1cfTg(Myh6-cre/Esr1*)1Jmk/A1cf+
Tg(Myh6-2A)#Know/0
Genetic
Background
involves: BALB/c * C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
A1cfTg(Myh6-cre/Esr1*)1Jmk mutation (5 available); any A1cf mutation (39 available)
Tg(Myh6-2A)#Know mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• cardiac cells from tamoxifen-treated mice show severe cytoskeletal changes such as myofibrillar collapse with a haphazard arrangement, a decrease in myofibril number, and an increase in swollen mitochondria
• irregularity in the spacing between cells in the intercalated discs and irregularity of the sarcolemmal membrane in the hearts of tamoxifen-treated mice
• myocardial fibers of tamoxifen-treated mice show abnormalities of intercalated discs
• biatrial enlargement in tamoxifen-treated mice
• severe ventricular enlargement in tamoxifen-treated mice
• small amount of interstitial fibrosis in tamoxifen-treated mice
• heart weight-to-body weight ratio is increased 22 days after tamoxifen administration
• decrease in the fractional shortening of the left ventricle of tamoxifen-treated mice
• increase in left ventricular end-diastolic dimension and end-systolic dimension in tamoxifen-treated mice
• tamoxifen-treated mice show only a small increase in inflammation

homeostasis/metabolism
• in tamoxifen-treated mice
• in tamoxifen-treated mice

immune system
• tamoxifen-treated mice show only a small increase in inflammation

muscle
• cardiac cells from tamoxifen-treated mice show severe cytoskeletal changes such as myofibrillar collapse with a haphazard arrangement, a decrease in myofibril number, and an increase in swollen mitochondria
• irregularity in the spacing between cells in the intercalated discs and irregularity of the sarcolemmal membrane in the hearts of tamoxifen-treated mice
• myocardial fibers of tamoxifen-treated mice show abnormalities of intercalated discs
• heart weight-to-body weight ratio is increased 22 days after tamoxifen administration
• decrease in the fractional shortening of the left ventricle of tamoxifen-treated mice
• the sarcolemmal membrane is disrupted in myocardial fibers of tamoxifen-treated mice
• myocardial fibers from tamoxifen-treated mice show shortened sarcomeres
• myocardial fibers from tamoxifen-treated mice show fuzzy Z-lines

respiratory system
• in tamoxifen-treated mice

cellular
• small amount of interstitial fibrosis in tamoxifen-treated mice

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
dilated cardiomyopathy DOID:12930 OMIM:PS115200
J:128060


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
10/29/2024
MGI 6.24
The Jackson Laboratory