首页> 外文期刊>Pharmacology, Biochemistry and Behavior >Acetic acid conditioning stimulus induces long-lasting antinociception of somatic inflammatory pain.
【24h】

Acetic acid conditioning stimulus induces long-lasting antinociception of somatic inflammatory pain.

机译:乙酸调理刺激会引起躯体炎性疼痛的持久抗伤害感受。

获取原文
获取原文并翻译 | 示例
           

摘要

A wide variety of noxious stimuli are known to induce a powerful inhibition of pain sensation evoked at a remote region of the body. Here we show that an intraperitoneal acetic acid (AA) conditioning stimulus produces long-lasting inhibition of formalin-evoked somatic inflammatory pain behavior in mice. This novel long-lasting antinociception was completely blocked by the 5-hydroxytryptamine type 2A/2C (5-HT(2A/2C)) receptor antagonists, ketanserin and ritanserin, but not by the opioid receptor antagonist, naloxone, and alpha-adrenergic receptor antagonists, phentolamine and yohimbine. In contrast, the 5-HT(3/4) receptor antagonist, tropisetron, significantly potentiated this long-lasting antinociception. The conditioning stimulus significantly upregulated the levels of both tryptophan hydroxylase immunoreactivity in the medulla oblongata and the 5-HT(2A/2C) receptor mRNA level in the spinal cord. These results suggested that the visceral noxious stimulus caused a long-lasting augmentation of the serotonergic inhibitory system and downregulated the somatic inflammatory nociceptive transmission.
机译:已知多种有害刺激可强烈抑制人体偏远地区引起的疼痛感。在这里,我们显示了腹膜内乙酸(AA)刺激会在小鼠中产生对福尔马林诱发的体细胞炎性疼痛行为的长期抑制。这种新型的持久性抗伤害感受被5-羟色胺2A / 2C(5-HT(2A / 2C))受体拮抗剂,酮色林和利坦色林完全阻断,但未被阿片受体拮抗剂,纳洛酮和α-肾上腺素受体阻断拮抗剂,酚妥拉明和育亨宾。相比之下,5-HT(3/4)受体拮抗剂tropisetron显着增强了这种持久的抗伤害感受。条件刺激显着上调了延髓中色氨酸羟化酶免疫反应性水平和脊髓中5-HT(2A / 2C)受体mRNA水平。这些结果表明,内脏有害刺激引起血清素能抑制系统的长期增强,并下调了体炎性伤害感受性传递。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号