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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Tg(Myh6-Tnni3*R146G)121Rbns
transgene insertion 121, Jeffrey Robbins
MGI:5909328
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
tg1
Tg(Myh6-Tnni3*R146G)121Rbns/Tg(Myh6-Tnni3*R146G)121Rbns Not Specified MGI:5909398
tg2
Tg(Myh6-Tnni3*R146G)121Rbns/0 Not Specified MGI:5909332


Genotype
MGI:5909398
tg1
Allelic
Composition
Tg(Myh6-Tnni3*R146G)121Rbns/Tg(Myh6-Tnni3*R146G)121Rbns
Genetic
Background
Not Specified
Find Mice Using the International Mouse Strain Resource (IMSR)
No mouse lines available in IMSR.
See publication links below for author information.
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice die at 18-26 days after birth
• mice die at 18-26 days after birth




Genotype
MGI:5909332
tg2
Allelic
Composition
Tg(Myh6-Tnni3*R146G)121Rbns/0
Genetic
Background
Not Specified
Find Mice Using the International Mouse Strain Resource (IMSR)
No mouse lines available in IMSR.
See publication links below for author information.
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• some cardiomyocytes from parous females show features of hypoxia as evidenced by swollen mitochondria and large gaps between the sarcoplasmic reticulum, mitochondria, and sarcomeres
• 13 month postpartum females exhibit cardiomyocyte hypertrophy
• 13 month postpartum females exhibit patchy areas of interstitial and perivascular fibrosis
• heart contractility is enhanced
• heart relaxation is impaired, with the time constant of relaxation prolonged
• skinned papillary muscle from 6 week old mice show increased calcium sensitivity and depressed maximum tension
• however, no differences are seen in unloaded shortening velocity, maximum shortening velocity, or maximum relative power
• females stressed by pregnancy develop cardiac pathology
• however, males and nulliparous females exhibit no discernible heart pathology at any age

homeostasis/metabolism
• females stressed by pregnancy develop cardiac pathology
• however, males and nulliparous females exhibit no discernible heart pathology at any age

muscle
• some cardiomyocytes from parous females show features of hypoxia as evidenced by swollen mitochondria and large gaps between the sarcoplasmic reticulum, mitochondria, and sarcomeres
• heart contractility is enhanced
• heart relaxation is impaired, with the time constant of relaxation prolonged

growth/size/body
• 13 month postpartum females exhibit cardiomyocyte hypertrophy

cellular
• 13 month postpartum females exhibit patchy areas of interstitial and perivascular fibrosis

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
hypertrophic cardiomyopathy 7 DOID:0110313 OMIM:613690
J:243628





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last database update
05/07/2024
MGI 6.23
The Jackson Laboratory