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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Glra1spd-ot
spasmodic oscillator
MGI:1856177
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Glra1spd-ot/Glra1spd-ot C57BL/6J-Glra1spd-ot Mpzl3rc MGI:3624368
hm2
Glra1spd-ot/Glra1spd-ot involves: C57BL/6J MGI:3810131
ht3
Glra1m1Cpai/Glra1spd-ot involves: 129 * C57BL/6 * C57BL/6J MGI:6471175


Genotype
MGI:3624368
hm1
Allelic
Composition
Glra1spd-ot/Glra1spd-ot
Genetic
Background
C57BL/6J-Glra1spd-ot Mpzl3rc
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Glra1spd-ot mutation (1 available); any Glra1 mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• usually die about 22-23 days of age

behavior/neurological
• begin to tremble violently and very rapidly at about 14 days of age; severity of tremor increases daily
• at 19-21 days of age, mutants have prolonged periods of great rigor or stiffness; therapy with aminooxyacetic acid is helpful but only temporarily




Genotype
MGI:3810131
hm2
Allelic
Composition
Glra1spd-ot/Glra1spd-ot
Genetic
Background
involves: C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Glra1spd-ot mutation (1 available); any Glra1 mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• homozygotes die by the end of the third week after birth

nervous system
N
• mice exhibit normal spontaenous glycinergic inhibitory postsynaptic currents in amacrine cells
• in mutants there is a reduction or absence of post-inspiratory neurons compared to wild-type
• phrenic nerve discharge patterns of mutant mice vary with respect to burst frequency and duration of expiration and inspiration compared to wild-type mice; mutants displayed more frequent phrenic nerve discharges with shorter, less regular expiratory intervals

muscle
• after rapid breathing episodes, single or multiple whole-body spasms occur with intervals between spasms of 6 seconds to more than 1 minute

respiratory system
• conscious mutants (P16-23) display disturbed respiratory patterns characterized by periods of slow breathing and intermittent episodes of rapid breathing; episodes are of variable (2-10 sec)




Genotype
MGI:6471175
ht3
Allelic
Composition
Glra1m1Cpai/Glra1spd-ot
Genetic
Background
involves: 129 * C57BL/6 * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Glra1m1Cpai mutation (0 available); any Glra1 mutation (30 available)
Glra1spd-ot mutation (1 available); any Glra1 mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice die 4 weeks after birth





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last database update
04/23/2024
MGI 6.23
The Jackson Laboratory