Biotinylated dextran amine is an ideal anterograde tracer for the corticospinal tract in a goat mode

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Existing visualized tracer studies of the corticospinal tract have been focused on rodents, which have markedly different spinal cord structures compared with humans. In this study, the segmental artery feeding the spinal cord was embolized with digital subtraction angiography to establish a goat model of ischemic spinal cord injury. Biotinylated dextran amine was injected into the motor function areas of the cortex in goats with ischemic spinal cord injury. The corticospinal tract originates from the cerebral cortex motor function area, and travels towards the lateral funiculus at the contralateral spinal dorsal h after decussation at the pyramid. The number of corticospinal tract positive fibers was found to be gradually reduced. These findings indicate that digital subtraction angiography can be applied to a goat model of ischemic spinal cord injury. Biotinylated dextran amine visualizes the course of the goat corticospinal tract in the spinal cord, which is similar to the human spinal cord. Biotinylated dextran amine is an ideal tracer for the corticospinal tract.
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