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Previous studies have shown that, anode block electrical stimulation of the sacral nerve root can produce physiological urination and reconstruct urinary bladder function in rabbits. However, whether long-term anode block electrical stimulation causes damage to the sacral nerve root re-mains unclear, and needs further investigation. In this study, a complete spinal cord injury model was established in New Zealand white rabbits through T9-10 segment transection. Rabbits were given continuous electrical stimulation for a short period and then chronic stimulation for a longer period. Results showed that compared with normal rabbits, the structure of nerve cells in the anterior sacral nerve roots was unchanged in spinal cord injury rabbits after electrical stimu-lation. There was no signiifcant difference in the expression of apoptosis-related proteins such as Bax, Caspase-3, and Bcl-2. Experimental ifndings indicate that neurons in the rabbit sacral nerve roots tolerate electrical stimulation, even after long-term anode block electrical stimulation.