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Transl Stroke Res ; 5(5): 562-8, 2014 Oct.
Article in English | MEDLINE | ID: mdl-24687517

ABSTRACT

Clinical stroke often results in impaired balance and increased vulnerability to severe injuries due to falling. To evaluate potential preclinical treatments that might target these deficits, it will be important to include tests capable of assessing these impairments chronically in animal models. Previously, we developed a postural instability test (PIT) that revealed chronic, unilateral impairments in postural stability in rat models of hemi-Parkinson's disease (PD) and of unilateral cervical spinal cord injury. Here, we investigated whether this test was also capable of revealing long-term stroke-induced impairments in postural support in rats. Additionally, we examined the ability of more common tests of sensorimotor function to detect chronic impairments. We found that the PIT detected chronic deficits in postural stability/balance enduring for up to 6 weeks post-stroke, outlasting impairments detected in other tests of forelimb sensorimotor function, including asymmetries in upright postural support (cylinder test) and vibrissae-evoked forelimb placing.


Subject(s)
Brain Ischemia/physiopathology , Motor Activity , Neostriatum/injuries , Postural Balance , Stroke/physiopathology , Animals , Forelimb/physiopathology , Male , Rats , Rats, Long-Evans , Vibrissae/physiology
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