Long descending cervical propriospinal neurons differ from thoracic propriospinal neurons in response to low thoracic spinal injury |
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Authors: | Justin R Siebert Frank A Middleton and Dennis J Stelzner |
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Institution: | 1.Department of Cell and Developmental Biology,SUNY Upstate Medical University,New York,USA;2.Department of Neuroscience and Physiology,SUNY Upstate Medical University,New York,USA |
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Abstract: | Background Propriospinal neurons, with axonal projections intrinsic to the spinal cord, have shown a greater regenerative response than
supraspinal neurons after axotomy due to spinal cord injury (SCI). Our previous work focused on the response of axotomized
short thoracic propriospinal (TPS) neurons following a low thoracic SCI (T9 spinal transection or moderate spinal contusion
injury) in the rat. The present investigation analyzes the intrinsic response of cervical propriospinal neurons having long
descending axons which project into the lumbosacral enlargement, long descending propriospinal tract (LDPT) axons. These neurons
also were axotomized by T9 spinal injury in the same animals used in our previous study. |
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