Expression of VPAC2 receptor and PAC1 receptor splice variants in the trigeminal ganglion of the adult rat

被引：36

作者：

Chaudhary, P ^{[1
]}

Baumann, TK ^{[1
]}

机构：

[1] Oregon Hlth Sci Univ, Dept Neurol Surg, Portland, OR 97239 USA

来源：

MOLECULAR BRAIN RESEARCH | 2002年 / 104卷 / 02期

关键词：

PACAP; VIP; trigeminal neuralgia;

D O I：

10.1016/S0169-328X(02)00329-7

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

PACAP and VIP are members of the VIP/secretin/glucagon family of peptides with neurotransmitter, neuroprotective, and neurotrophic functions. PACAP and VIP are known to be upregulated in primary sensory neurons following nerve injury, implying that these neuropeptides could be mediators of sensory transmission in neuropathic pain states. Nerve injury at the level of the trigeminal root is thought to be the prime cause of trigeminal neuralgia. Since cross-excitation (a chemically-mediated form of nonsynaptic transmission) within the TG is postulated to play a central role in trigeminal neuralgia, we studied the expression of PACAP and VIP receptors in the TG by RT PCR and immunocytochemistry. Of the three known receptors (PAC1, VPAC1 and VPAC2), RT PCR revealed the presence of mRNA for VPAC2 and several splice variants of the PAC1 receptor. Immunocytochemistry showed PAC1 and VPAC2 to be present in small-diameter TG neurons. Thus, PACAP and VIP are potential mediators of cross-excitation in the TG. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：137 / 142

页数：6

共 37 条

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