Cannabinoid Withdrawal Syndrome Is Reduced in Pre-Proenkephalin Knock-Out Mice

Cannabinoid Withdrawal Syndrome Is Reduced in Pre-Proenkephalin Knock-Out Mice
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前脑啡肽原敲除小鼠的大麻素戒断综合症减少

DOI:
10.1523/jneurosci.20-24-09284.2000
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发表时间:
2000
期刊:
The Journal of Neuroscience
影响因子:
--
通讯作者:
A. Zimmer
A. Zimmer
中科院分区:
--
文献类型:
--
作者:
O. Valverde;R. Maldonado;E. Valjent;A. Zimmer;A. Zimmer

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在前脑啡肽原缺陷小鼠中评价内源性大麻素和阿片系统之间的功能相互作用。急性Δ9-四氢大麻酚在尾部浸泡试验中诱导的抗伤害感受在突变小鼠中减少,而在诱导的对体温、运动或环状僵住症的影响方面,没有观察到基因型之间的差异。在用Δ9-四氢大麻酚进行慢性治疗期间,在缺乏脑啡肽的小鼠中,对由该化合物诱导的镇痛反应的耐受性的发展较慢。此外,通过注射SR 141716 A在Δ9-四氢大麻酚依赖性小鼠中诱发的大麻素戒断综合征在突变小鼠中显着减弱。这些结果表明,内源性脑啡肽能系统参与了Δ9-四氢大麻酚的抗伤害性反应,并参与了大麻素戒断的表达。
The functional interactions between the endogenous cannabinoid and opioid systems were evaluated in pre-proenkephalin-deficient mice. Antinociception induced in the tail-immersion test by acute Δ9-tetrahydrocannabinol was reduced in mutant mice, whereas no difference between genotypes was observed in the effects induced on body temperature, locomotion, or ring catalepsy. During a chronic treatment with Δ9-tetrahydrocannabinol, the development of tolerance to the analgesic responses induced by this compound was slower in mice lacking enkephalin. In addition, cannabinoid withdrawal syndrome, precipitated in Δ9-tetrahydrocannabinol-dependent mice by the injection of SR141716A, was significantly attenuated in mutant mice. These results indicate that the endogenous enkephalinergic system is involved in the antinociceptive responses of Δ9-tetrahydrocannabinol and participates in the expression of cannabinoid abstinence.
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