Role of GPR103-26RFa-QRFP system in the development of neuropathic pain
Role of GPR103-26RFa-QRFP system in the development of neuropathic pain
批准号:
23590715
负责人:
TANAHIRA Chiyoko
金额:
$3.08万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2011
资助国家:
日本
项目状态:
已结题
起止时间:
2011 至 2013
中文摘要
在本研究中,我们观察了鞘内和脑室内应用26RFa对大鼠部分坐骨神经结扎引起的机械异常痛水平的影响。鞘内和脑室内注射26RFa以剂量依赖的方式减弱机械性异常痛的水平。免疫组化检查显示,qrfp样免疫反应性(QRFP-LI)主要表达于L5背根神经节的中小尺寸神经元谱,部分坐骨神经损伤增加了L5背根神经节中QRFP-LI阳性神经元谱的比例,使其在神经损伤同侧的L5背根神经节中QRFP-LI阳性神经元谱的横截面积增大。与生理盐水注射大鼠相比,在RVM中微量注射5 ;g的26RFa可显著减少足部福尔马林注射引起的退缩行为。26RFa的这种作用不被纳洛酮拮抗。
英文摘要
In the present study, the effects of intrathecal and intracerebroventricular application of 26RFa, on the level of mechanical allodynia induced by partial sciatic nerve ligation, were examined in rats. Intrathecal and intracerebroventricular injection of 26RFa attenuated the level of mechanical allodynia in a dose dependent manner. Immunohistochemical examination revealed that QRFP-like immunoreactivity (QRFP-LI) was expressed mainly in the small to medium sized neuronal profiles in the L5 dorsal root ganglion and that partial sciatic nerve injury increased the percentage of QRFP-LI positive neuronal profiles and made the cross-section area of the QRFP-LI positive neuronal profiles larger in the L5 dorsal root ganglion ipsilateral to the nerve injury.Microinjection of 5 g of 26RFa into RVM decreased the number of flinching behavior induced by paw formalin injection significantly as compared with saline injected rats. This effect of 26RFa was not antagonized by naloxone.
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Microinjection of 26RFa, an endogeniou ligand for GPR103, into rostral ventromedial medulla (RVM) produces an analgesic effect in the rat formalin test
将 26RFa(GPR103 的内源性配体)显微注射到头端腹内侧延髓 (RVM),在大鼠福尔马林试验中产生镇痛作用
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
[Miki Araki, Takahiro Nonaka, Toshihiko Yamada, Tatsuo Yamamoto]
通讯作者:
Tatsuo Yamamoto
Anti-allodynic effects of intrathecally and intracerebroventricularly administered 26RFa, an intrinsic agonist for GRP103, in the rat partial sciatic nerve ligation model
鞘内和脑室内注射 26RFa(GRP103 的内在激动剂)在大鼠部分坐骨神经结扎模型中的抗异常疼痛作用
DOI:
--
发表时间:
2011
期刊:
Peptides
影响因子:
3
作者:
[Tatsuo Yamamoto, R. Miyazaki, Toshihiko Yamada, T. Shinozaki]
通讯作者:
T. Shinozaki
Microinjection of Neuropeptide W, an endogeniou ligand for GPR7 and 8, into rostral ventromedial medulla (RVM) produces an analgesic effect in the rat formalin test
将神经肽 W(GPR7 和 8 的内源性配体)显微注射到延髓头端腹内侧 (RVM),在大鼠福尔马林试验中产生镇痛作用
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
[Takahiro Nonaka, Toshihiko Yamada, Miki Araki, Tatsuo Yamamoto]
通讯作者:
Tatsuo Yamamoto
Microinjection of 26RFa, an endogenous ligand for GPR103, into rostralventromedial medulla (RVM) produces an analgesic effect in the rat formalin test
将 26RFa(GPR103 的内源性配体)显微注射到延髓头腹内侧 (RVM),在大鼠福尔马林试验中产生镇痛作用
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
[Yasukochi Y, Takenaka K, Yurino A, Kurihara Y, Miake S, Uchi H, Takeuchi S, Kohda F, Moroi Y, Okano S, Yamamoto H, Furue M, Tatsuo Yamamoto]
通讯作者:
Tatsuo Yamamoto
Microinjection of Neuropeptide W, an endogenous ligand for GPR7 and 8, into rostral ventromedial medulla (RVM) produces an analgesic effect in the rat formalin test.
将神经肽 W(GPR7 和 8 的内源性配体)显微注射到延髓头端腹内侧 (RVM),在大鼠福尔马林试验中产生镇痛作用。
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
[山田 宗治, 尾田 高志, 小松 秀平, 藤井 理恵, 大島 泰斗, 廣瀬 剛, 小島 糾, 須藤 泰代, 冨安 朋宏, 吉川 憲子, 吉田 雅治, Tatsuo Yamamoto]
通讯作者:
Tatsuo Yamamoto
海外基金