Intrathecal morphine, but not buprenorphine or pentazocine, can induce spastic paraparesis after a noninjurious interval of spinal cord ischemia in the rat.

Nakamura, Seiya; Kakinohana, Manabu; Sugahara, Kazuhiro; Kinjo, Sakura; Miyata, Yuji · Anesth Analg · 2004

basic_science · Level V

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Abstract

In this study, we sought to determine the effect of intrathecal (IT) pentazocine or buprenorphine on the neurological outcome after a short interval of spinal cord ischemia in rats. Although IT morphine (30 microg) induced spastic paraparesis after 6 min of aortic occlusion, neither pentazocine (150 microg) nor buprenorphine (4 microg) produced neurological dysfunction. Our results indicate that the effect of various opioids on the motor function after a noninjurious interval of spinal cord ischemia is opioid-specific.

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