Involvement of neurokinin 1 receptor within the cerebrospinal fluid‑contacting nucleus in visceral pain.

Abstract:

:Studies have shown that the cerebrospinal fluid‑contacting nucleus (CSF‑CN) may be associated with the transduction and regulation of pain signals. However, the role of the CSF‑CN remains to be elucidated. Emerging evidence has suggested that neurokinin 1 receptor (NK1R) is important in the development of visceral pain and hyperalgesia, however, whether NK1R exists in the CSF‑CN and its exact role in visceral pain remain to be fully elucidated. In the present study, double‑labeled immunofluorescence staining and western blot analysis were performed to investigate this. It was revealed that NK1R was distributed in the CSF‑CN. Following the induction of visceral pain by formalin instillation, NK1R in the CSF‑CN was upregulated. In addition, by observing the behaviors of rats subjected to visceral pain, it was found that visceral pain was relieved by lateral intracerbroventricular injection of the NK1R antagonist, RP67580. These data provided a broader understanding of the role of NK1R in the CSF‑CN and demonstrated that the CSF‑CN was involved in acute visceral pain via the regulation of NK1R.

journal_name

Mol Med Rep

authors

Zhang C,Li Y,Wang X,Fei Y,Zhang L

doi

10.3892/mmr.2017.6499

subject

Has Abstract

pub_date

2017-06-01 00:00:00

pages

4300-4304

issue

6

eissn

1791-2997

issn

1791-3004

journal_volume

15

pub_type

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