Neurological recovery in diabetic rats following spinal cord injury.

Abstract:

:This study was designed to assess the effect of spinal cord injury on neurobehavioral, electrophysiological, structural, and biochemical changes in normal and diabetic rats. Experimental diabetes was induced in Sprague-Dawley male rats (weighing 250-280 g) with streptozotocin (50 mg/kg i.p.). Eight weeks after the treatment with streptozotocin the animals were anaesthetized with chloral hydrate and laminectomy was performed at T 7-8 level leaving the dura intact. A compression plate (2.2 x 5.0 mm) loaded with a weight of 35 g was placed on the exposed spinal cord for 5 min. Postoperative neurological function was assessed using inclined plane test, modified Tarlov score, and vocal and sensory score daily for 10 days. Electrophysiological changes were assessed using somatosensory and corticomotor evoked-potentials. The animals were sacrificed at different time intervals and injured site of the spinal cord was analyzed for changes in vitamin E and glutathione levels (as markers of oxidative stress). Pathological changes in spinal cord were also studied using light microscopy. The data on neurobehavioral study clearly indicated that the compression of spinal cord produced highly significant neurological deficit and poor recovery in diabetic rats as compared to nondiabetic rats. Our histopathological and electrophysiological results also confirmed that diabetic animals are more susceptible to compressive spinal cord injury as compared to nondiabetic animals. A higher depletion of antioxidant defense markers (vitamin E and glutathione) was observed in diabetic rats as compared to nondiabetic rats. These results point toward the role of free radicals in poor recovery in diabetic rats following neurotrauma. Further studies are warranted to assess the neuroprotective potential of antioxidants to retard the secondary pathophysiological events following neurotrauma and to enhance the recovery.

journal_name

J Neurotrauma

journal_title

Journal of neurotrauma

authors

Tariq M,Morais C,Kishore PN,Biary N,Al Deeb S,Al Moutaery K

doi

10.1089/neu.1998.15.239

subject

Has Abstract

pub_date

1998-04-01 00:00:00

pages

239-51

issue

4

eissn

0897-7151

issn

1557-9042

journal_volume

15

pub_type

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