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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Hprt1tm1Dhm
targeted mutation 1, David H MacLennan
MGI:3050087
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Hprt1tm1Dhm/Hprt1tm1Dhm involves: 129P2/OlaHsd MGI:3050227
cx2
Hprt1tm1Dhm/Hprt1tm1Dhm
Plntm1Egk/Plntm1Egk
involves: 129P2/OlaHsd * 129S2/SvPas MGI:3653918
cx3
Hprt1tm1Dhm/Y
Plntm1Egk/Plntm1Egk
involves: 129P2/OlaHsd * 129S2/SvPas MGI:3653919
ot4
Hprt1tm1Dhm/Y involves: 129P2/OlaHsd MGI:3050226


Genotype
MGI:3050227
hm1
Allelic
Composition
Hprt1tm1Dhm/Hprt1tm1Dhm
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hprt1tm1Dhm mutation (0 available); any Hprt1 mutation (1274 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• the ratio of left ventricular weight to both tibia length and body weight is increased at 10 weeks of age
• exhibit mild hypertrophy
• isolated cardiac myocytes exhibit a significant decrease in fractional cell shortening and smaller dL/dT values
• the first derivatives of minimum and maximum left ventricular pressure, the fractional shortening, velocity of circumferential shortening corrected, and peak early-filling transmitral diastolic wave velocity are all decreased
• treatment with isoproternol, a beta-adrenergic activator, reversed cardiac impairment in mutant hearts
• isolated cardiac myocytes exhibit lower relaxation rates (-dL/dt) than wild-type
• under baseline conditions, left ventricular myocytes exhibit lower calcium transient amplitude and slower calcium transient decays

muscle
• isolated cardiac myocytes exhibit a significant decrease in fractional cell shortening and smaller dL/dT values
• the first derivatives of minimum and maximum left ventricular pressure, the fractional shortening, velocity of circumferential shortening corrected, and peak early-filling transmitral diastolic wave velocity are all decreased
• treatment with isoproternol, a beta-adrenergic activator, reversed cardiac impairment in mutant hearts
• isolated cardiac myocytes exhibit lower relaxation rates (-dL/dt) than wild-type

growth/size/body
• the ratio of left ventricular weight to both tibia length and body weight is increased at 10 weeks of age
• exhibit mild hypertrophy




Genotype
MGI:3653918
cx2
Allelic
Composition
Hprt1tm1Dhm/Hprt1tm1Dhm
Plntm1Egk/Plntm1Egk
Genetic
Background
involves: 129P2/OlaHsd * 129S2/SvPas
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hprt1tm1Dhm mutation (0 available); any Hprt1 mutation (1274 available)
Plntm1Egk mutation (7 available); any Pln mutation (16 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• isolated cardiac myocytes exhibit enhanced fractional cell shortening and higher dL/dT values compared to wild-type, however this shortening and dL/dT values are less than that seen in the single homozygous Pln mutant mouse
• isolated cardiac myocytes exhibit higher relaxation rates (-dL/dt) than wild-type but lower than that seen in single homozygous Pln mutant mice
• under baseline conditions, left ventricular myocytes exhibit faster calcium transient decays than wild-type, however they are slower than in single homozygous Pln mutant mice

muscle
• isolated cardiac myocytes exhibit enhanced fractional cell shortening and higher dL/dT values compared to wild-type, however this shortening and dL/dT values are less than that seen in the single homozygous Pln mutant mouse
• isolated cardiac myocytes exhibit higher relaxation rates (-dL/dt) than wild-type but lower than that seen in single homozygous Pln mutant mice




Genotype
MGI:3653919
cx3
Allelic
Composition
Hprt1tm1Dhm/Y
Plntm1Egk/Plntm1Egk
Genetic
Background
involves: 129P2/OlaHsd * 129S2/SvPas
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hprt1tm1Dhm mutation (0 available); any Hprt1 mutation (1274 available)
Plntm1Egk mutation (7 available); any Pln mutation (16 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• isolated cardiac myocytes exhibit enhanced fractional cell shortening and higher dL/dT values compared to wild-type, however this shortening and dL/dT values are less than that seen in the single homozygous Pln mutant mouse
• isolated cardiac myocytes exhibit higher relaxation rates (-dL/dt) than wild-type but lower than that seen in single homozygous Pln mutant mice
• under baseline conditions, left ventricular myocytes exhibit faster calcium transient decays than wild-type, however they are slower than in single homozygous Pln mutant mice

muscle
• isolated cardiac myocytes exhibit enhanced fractional cell shortening and higher dL/dT values compared to wild-type, however this shortening and dL/dT values are less than that seen in the single homozygous Pln mutant mouse
• isolated cardiac myocytes exhibit higher relaxation rates (-dL/dt) than wild-type but lower than that seen in single homozygous Pln mutant mice




Genotype
MGI:3050226
ot4
Allelic
Composition
Hprt1tm1Dhm/Y
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hprt1tm1Dhm mutation (0 available); any Hprt1 mutation (1274 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• the ratio of left ventricular weight to both tibia length and body weight is increased at 10 weeks of age
• exhibit mild hypertrophy
• isolated cardiac myocytes exhibit a significant decrease in fractional cell shortening and smaller dL/dT values
• the first derivatives of minimum and maximum left ventricular pressure, the fractional shortening, velocity of circumferential shortening corrected, and peak early-filling transmitral diastolic wave velocity are all decreased
• treatment with isoproternol, a beta-adrenergic activator, reversed cardiac impairment in mutant hearts
• isolated cardiac myocytes exhibit lower relaxation rates (-dL/dt) than wild-type
• under baseline conditions, left ventricular myocytes exhibit lower calcium transient amplitude and slower calcium transient decays

muscle
• isolated cardiac myocytes exhibit a significant decrease in fractional cell shortening and smaller dL/dT values
• the first derivatives of minimum and maximum left ventricular pressure, the fractional shortening, velocity of circumferential shortening corrected, and peak early-filling transmitral diastolic wave velocity are all decreased
• treatment with isoproternol, a beta-adrenergic activator, reversed cardiac impairment in mutant hearts
• isolated cardiac myocytes exhibit lower relaxation rates (-dL/dt) than wild-type

growth/size/body
• the ratio of left ventricular weight to both tibia length and body weight is increased at 10 weeks of age
• exhibit mild hypertrophy





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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
05/07/2024
MGI 6.23
The Jackson Laboratory