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美普他酚敏感结合位点在大鼠脑内的定量放射自显影分布

Quantitative autoradiographic distribution of meptazinol-sensitive binding sites in rat brain.

作者信息

Adler B A, Goodman R R, Pasternak G W

机构信息

Cotzias Laboratory of Neuro-Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York 10021.

出版信息

Cell Mol Neurobiol. 1988 Dec;8(4):471-6. doi: 10.1007/BF00711230.

DOI:10.1007/BF00711230
PMID:2852061
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11567369/
Abstract
  1. Meptazinol is an interesting opioid-producing naloxone-reversible analgesia with few cardiovascular and respiratory effects. Recent studies indicate that mu 1 opioid receptors mediate meptazinol analgesia. Using a computerized autoradiographic subtraction technique, we have examined the regional distribution of meptazinol-sensitive [3H][D-Ala2,MePhe4,Gly(ol)5]enkephalin (DAGO) binding and compared this with the distribution of mu 1 binding determined by competition with low [D-Ala2,D-Leu5]enkephalin (DADL) concentrations. 2. Meptazinol and DADL lowered [3H]DAGO to similar extents in most brain regions studied. The greatest levels of inhibition were observed in the periaqueductal gray, interpeduncular nucleus, thalamus, hypothalamus, and hippocampus. Low levels of inhibition were found in the temporal and frontal cortex. The correlation between the inhibition of [3H]DAGO binding by meptazinol and that by DADL was high (r = 0.83), consistent with the binding of meptazinol to mu 1 sites.
摘要
  1. 美普他酚是一种有趣的阿片类药物,能产生纳洛酮可逆性镇痛作用,对心血管和呼吸系统影响较小。近期研究表明,μ1阿片受体介导美普他酚的镇痛作用。我们使用计算机自动放射照相减法技术,研究了美普他酚敏感的[3H][D-丙氨酸2,甲硫氨酸苯丙氨酸4,甘氨酸(醇)5]脑啡肽(DAGO)结合的区域分布,并将其与通过低浓度[D-丙氨酸2,D-亮氨酸5]脑啡肽(DADL)竞争测定的μ1结合分布进行比较。2. 在大多数研究的脑区中,美普他酚和DADL降低[3H]DAGO的程度相似。在导水管周围灰质、脚间核、丘脑、下丘脑和海马体中观察到最大程度的抑制。在颞叶和额叶皮质中发现抑制水平较低。美普他酚对[3H]DAGO结合的抑制与DADL的抑制之间的相关性很高(r = 0.83),这与美普他酚与μ1位点的结合一致。

相似文献

1
Quantitative autoradiographic distribution of meptazinol-sensitive binding sites in rat brain.美普他酚敏感结合位点在大鼠脑内的定量放射自显影分布
Cell Mol Neurobiol. 1988 Dec;8(4):471-6. doi: 10.1007/BF00711230.
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J Pharmacol Exp Ther. 1988 Nov;247(2):729-36.
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Differential ontogeny of multiple opioid receptors (mu, delta, and kappa).多种阿片受体(μ、δ和κ)的差异个体发生
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本文引用的文献

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Separation of morphine analgesia from physical dependence.吗啡镇痛作用与身体依赖性的分离。
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A very high affinity opioid binding site in rat brain: demonstration by computer modeling.
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Biochemical characterization of high-affinity 3H-opioid binding. Further evidence for Mu1 sites.高亲和力3H-阿片样物质结合的生化特性。对Mu1位点的进一步证据。
Mol Pharmacol. 1984 Jan;25(1):29-37.
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Multiple mu receptors: evidence for mu2 sites in the guinea pig ileum.多种μ受体:豚鼠回肠中存在μ2位点的证据。
Neurosci Lett. 1983 Aug 19;39(1):51-6. doi: 10.1016/0304-3940(83)90164-7.
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Spinal and supraspinal opioid analgesia in the mouse: the role of subpopulations of opioid binding sites.
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Eur J Pharmacol. 1983 Jan 21;86(3-4):487-8. doi: 10.1016/0014-2999(83)90203-0.
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Classification of multiple morphine and enkephalin binding sites in the central nervous system.中枢神经系统中多种吗啡和脑啡肽结合位点的分类
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Meptazinol: a novel Mu-1 selective opioid analgesic.美普他酚:一种新型的μ-1选择性阿片类镇痛药。
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Clinical pharmacology of meptazinol.美普他酚的临床药理学
Postgrad Med J. 1985;61 Suppl 2:13-6.