The physiology and pharmacology of spinal opiates.
The physiology and pharmacology of spinal opiates.
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DOI:
10.1146/annurev.pa.25.040185.002245
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发表时间:
1985
影响因子:
12.5
通讯作者:
T. Yaksh;R. Noueihed
中科院分区:
文献类型:
--
作者:
T. Yaksh;R. Noueihed
Opioid agonists with an action limited to the spinal cord produce powerful changes in an organism's response to otherwise painful stimuli. The effect is mediated by an action on opioid receptors located, we believe, on specific spinal elements that mediate the local processing of nociceptive information and its subsequent transmission to supraspinal centers. An extensive literature, reviewed elsewhere (1-2a), has made it abundantly clear that several classes of opioid receptors exist, including those with pharmacological profiles desig nated fJ., 3, K, (J' and E. In the following section we consider current thinking on the mechanism underlying the spinal action of opioids, the characteristics of the analgesia, and the characteristics of the receptor populations that mediate effect. Recently, it has become clear that spinal opioid receptors are also associated with a variety of systems in addition to those pertaining to sensory modulation. Thus, the spinal administration of opiates in the intact and unanes thetized animal has revealed powerful receptor-mediated effects on motor, cardiovascular, gastrointestinal, and bladder function. These subjects will also be briefly addressed.