nervous system
• retinal ganglion cells cultured from eyes with len lesions have increased numbers compared to controls
• a smaller percentage of these ganglion cells have neurites compared to controls
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• mice receiving a unilateral entorhinal cortex lesion have reduced collateral sprouting in the surrounding neurons compared to control mice
• differences occur between 1 and 2 weeks after injury
• the total number and average size of forebrain cholinergic neurons two weeks after entorhinal cortex lesion is smaller than controls
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• the number of newly sprouting axons 4 days after sciatic nerve crushing is significantly less at 1, 3, and 5 mm distal from the crush site compared to controls
• the mean cross sectional area of these newly sprouted axons is also diminished compared to controls
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• mice show delayed sensory peripheral nerve regeneration
• mean recovery of sensory function from crushed sciatic nerve is 19.2 days compared to 14.8 days in controls
• motor function recovery of sciatic nerve is not delayed
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behavior/neurological
• mice display significantly more wall leaning, jumping, and less grooming during a 30 minute period in a new environment
• mice also leave their starting position in the new environment significantly faster than controls
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• mice show impaired spatial learning in a morris water maze where they receive only two trails per day
• on day 10 and 16 of the testing, only 1 out of 8 mutant mice spend more than 30% of the time in the correct quadrant versus 5 of 6 control mice
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hyperactivity
(
J:95946
)
• mice have significantly more nocturnal activity with activity counts being almost double that of controls during much of the night
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• mice collect 5.2 g/day of cotton material for nest building over a 4 day test period compared to just 3.7 g/day mean for controls
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vision/eye
• retinal ganglion cells cultured from eyes with len lesions have increased numbers compared to controls
• a smaller percentage of these ganglion cells have neurites compared to controls
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