Intra-periaqueductal gray matter administration of orexin-A exaggerates pulpitis-induced anxiogenic responses and c-fos expression mainly through the interaction with orexin 1 and cannabinoid 1 receptors in rats

焦虑症 增食欲素 伤害 导水管周围灰质 内分泌学 大麻素 内科学 食欲素受体 辣椒素 高架加迷宫 大麻素受体 化学 食欲素-A AM251型 药理学 受体 医学 神经肽 抗焦虑药 中枢神经系统 焦虑 兴奋剂 中脑 精神科
作者
Ali Mohammad Pourrahimi,Mehdi Abbasnejad,Saeed Esmaeili‐Mahani,Mehdi Abbasnejad,Maryam Raoof
出处
期刊:Neuropeptides [Elsevier]
卷期号:73: 25-33 被引量:14
标识
DOI:10.1016/j.npep.2018.12.001
摘要

Different types of trigeminal pains are frequently associated with psychophysiological concerns. Orexin-A and orexin 1 receptor (OX1R) are involved in modulation of both trigeminal pain and anxiety responses. Ventrolateral periaqueductal gray matter (vlPAG), a controlling site for nociception and emotion, receives orexinergic inputs. Here, the role of vlPAG OX1Rs and their interaction with cannabinoid 1 (CB1) receptor was evaluated in anxiety-like behavior following capsaicin-induced dental pulp pain. Rats were cannulated in the vlPAG and orexin-A was injected at the doses of 0.17, 0.35 and 0.51 μg/rat prior to the induction of pain. The elevated plus maze (EPM) and open field (OF) tests were used for assessing the anxiety responses. In addition, the induction of c-fos, in the vlPAG, was investigated using immunofluorescence microscopy. Capsaicin-treated rats displayed significantly higher anxiogenic behavior on EPM and OF tests. Pretreatment with orexin-A (0.51 μg/rat) attenuated capsaicin-mediated nociception, while exaggerated anxiogenic responses (p < 0.05). In addition, orexin-A effects were diminished by the administration of OX1R (SB-334867, 12 μg/rat) and cannabinoid 1 (AM251, 4 μg/rat) receptor antagonists. Intradental capsaicin induced a significant increase in c-fos expression in the vlPAG that was exaggerated by orexin-A (0.51 μg/rat). Blockage of OX1R and CB1 receptors attenuated the effect of orexin-A on c-fos expression in capsaicin-treated rats. In conclusion, the data suggest that manipulation of OX1R and CB1 receptors in the vlPAG alters capsaicin-evoked anxiety like behaviors and c-fos induction in rats.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
2秒前
2秒前
2秒前
simple完成签到,获得积分10
3秒前
kitey发布了新的文献求助10
3秒前
4秒前
静静今天发SCI了吗完成签到 ,获得积分10
5秒前
天涯赤子完成签到,获得积分10
6秒前
阿谭完成签到,获得积分20
6秒前
正直凌文发布了新的文献求助10
6秒前
6秒前
完美世界应助恶恶么v采纳,获得10
7秒前
研研研完成签到,获得积分10
8秒前
梁羽生完成签到,获得积分10
8秒前
阿谭发布了新的文献求助10
9秒前
11秒前
SYUE完成签到 ,获得积分20
12秒前
Yziii应助吾星安处采纳,获得20
13秒前
13秒前
Blake完成签到 ,获得积分10
14秒前
寒冷的面包完成签到,获得积分10
14秒前
15秒前
15秒前
16秒前
16秒前
一路有你完成签到 ,获得积分10
17秒前
17秒前
17秒前
xixi完成签到 ,获得积分10
17秒前
18秒前
鲸鱼发布了新的文献求助10
18秒前
hahahaman发布了新的文献求助10
19秒前
乐乐应助悠悠采纳,获得20
19秒前
20秒前
亦hcy发布了新的文献求助10
21秒前
21秒前
22秒前
22秒前
23秒前
WT发布了新的文献求助10
24秒前
高分求助中
Evolution 10000
Sustainability in Tides Chemistry 2800
юрские динозавры восточного забайкалья 800
English Wealden Fossils 700
A new species of Coccus (Homoptera: Coccoidea) from Malawi 500
A new species of Velataspis (Hemiptera Coccoidea Diaspididae) from tea in Assam 500
Diagnostic immunohistochemistry : theranostic and genomic applications 6th Edition 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3155969
求助须知:如何正确求助?哪些是违规求助? 2807310
关于积分的说明 7872521
捐赠科研通 2465654
什么是DOI,文献DOI怎么找? 1312280
科研通“疑难数据库(出版商)”最低求助积分说明 630031
版权声明 601905