nervous system
N |
• mice do not exhibit spontaneous seizures
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• reduced relative to grey matter
|
• all five white matter tracts except the fornix exhibit reduced volume compared with wild-type mice
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• unilateral change
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• reduced
|
• reduced
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• enlarged
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• decreased size
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• reduced spinal trigeminal tract
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• decreased spine density on motor sensory neurons and striatum compared with wild-type mice
• however, spine density is normal in the hippocampus
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• decreased glutamatergic synapses compared with wild-type mice
• shorter and thinner striatal synapses compared with wild-type mice
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• altered functional connectivity in a frontostriatal circuit
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• motor sensory neurons exhibit enhanced excitability compared with wild-type mice
• however, treatment with a Grm5 positive allosteric modulate (CDPPB) rescues hyper-excitability
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• reduced frequency in motor sensory neurons compared with wild-type mice
• treatment with a Grm5 positive allosteric modulate (CDPPB) does not change the frequency or amplitude of sEPSCs
|
• following high-frequency stimulation
• however, treatment with a Grm5 positive allosteric modulate (CDPPB) rescues LTD without altering the probability of presynaptic release
|
behavior/neurological
• mice fail to show preference for a home nest versus an unfamiliar nest compared with wild-type mice
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• small enhancement
• however, mice exhibit normal cured conditioning
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• in an arena for the novel object recognition memory test, in a novel larger arena or Morris water maze, mice try to escape the test chamber unlike wild-type mice
• however, mice placed into clean home cages do not try to escape
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• impaired striatal learning in a bar-press food task
• however, treatment with a Grm5 positive allosteric modulate (CDPPB) partially rescues instrumental learning
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• impaired reverse learning in a Morris water maze
• however, mice exhibit normal acquisition performance in a Morris water maze and normal swimming
|
• mice spend less time in the center of the open field compared with wild-type mice
• in a light-dark emergence test, mice exhibit delayed entry into the lighted chamber and made fewer transitions between chambers compared with wild-type mice
|
• mice engage in fewer of the 16 holes in a hole-board test with a tendency to re-investigate the same hole compared with wild-type mice
• mice exhibit increased grooming during social investigation tests compared with wild-type mice
• treatment with a Grm5 positive allosteric modulate (CDPPB) increases self-grooming
• however, treatment with a Grm5 antagonist (MPEP) normalizes grooming
|
• on an accelerating and steady-speed rotarods despite normal grip strength
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• in home cage and an open field with a tendency toward decreased rearing
• however, treatment with a Grm5 antagonist (MPEP) normalizes activity in an open field
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• mice fail to establish stable hierarchies unlike wild-type mice
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• mice exhibit longer and more frequent non-reciprocal social investigation behavior with C3H mice compared with wild-type mice
• however, mice exhibit normal levels of social interest
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• fewer and shorter duration compared with wild-type mice
• lower frequencies and amplitudes of calls compared with wild-type mice
• male mice emit fewer calls with shorter duration and reduced amplitude compared with wild-type mice
• however, peak frequency is normal
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hearing/vestibular/ear
• delayed ear opening at P4
|
integument
skin lesions
(
J:235641
)
• in 16 of 30 mice at 5.5 months around the eyes, on the ears, back of the head, and under the chin of mice caused by excessive grooming
|
limbs/digits/tail
• delayed paw position at P4
|
taste/olfaction
• mice exhibit less robust habituation-dishabituation to olfactory stimuli compared with wild-type mice
• however, mice exhibit normal sniffing a social stimulus
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