behavior/neurological
• mice exhibit increased perseveration in the T maze, showing fewer alterations than wild-type mice
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• mice are able to learn to freeze to a tone after tone-shock pairings during the acquisition phase of fear conditioning but show decreases in freezing during the second and third intertone intervals
• however, mice show normal context dependent fear conditioning
• mice show decreased noise-cued fear response suggesting disrupted amygdala/auditory pathway function
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• in the light-dark box test, mice show a trend toward spending more time in the light compartment compared to the dark compartment, a reduction of latency to enter the light compartment, and increased border crossings suggesting either reduced anxiety or increased impulsivity
• mice bury fewer marbles than wild-type mice and show decreased digging, indicating increased impulsivity or decreased anxiety
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• mice exhibit increased grooming
• however, mice show normal performance on tests of sensory acuity, nesting, and open-field activity
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• in the light-dark box test, mice show a trend toward spending more time in the light compartment compared to the dark compartment, a reduction of latency to enter the light compartment, and increased border crossings suggesting either reduced anxiety or increased impulsivity
• mice bury fewer marbles than wild-type mice and show decreased digging, indicating increased impulsivity or decreased anxiety
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• mice perform poorly on the accelerating rotarod and wire hang test, indicating abnormal motor function
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• mice exhibit repetitive jumping behavior
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• mice show social dysfunction in the three-chamber task
• however, mice exhibit normal olfaction in the buried food test
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• mice take longer to return to huddle during the postnatal period than wild-type mice
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• mice exhibit an increase in vocalizations and various call types across all time points tested
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nervous system
• reduction in caudate and putamenal volume at 2 and 10 months of age
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• reduction in cortex and cerebellum volume of 2 and 10 month old mice
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• the charge of the AMPAR-mediated responses is increased in juvenile median-sized spiny neurons due to an increased duration of the slowly desensitizing component
• however, in adults no difference in charge of AMPAR-mediated responses is seen
• a proportion of median-sized spiny neurons (postnatal 25%, adult 16%) showing an AMPAR-mediated response fail to display an NMDAR-mediated response
• the population of responding postnatal median-sized spiny neurons show a greater NMDAR-mediated response than wild-type median-sized spiny neurons, with the charge and decay time significantly increased
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Mouse Models of Human Disease |
DO ID | OMIM ID(s) | Ref(s) | |
autism spectrum disorder | DOID:0060041 | J:228732 |