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Lysophosphatidic acid receptor type‐1 mediates brain activation in micro‐positron emission tomography analysis in a fibromyalgia‐like mouse model

Lysophosphatidic acid receptor type‐1 mediates brain activation in micro‐positron emission... The intermittent cold stress‐induced generalized pain response mimics the pathophysiological and pharmacotherapeutic features reported for fibromyalgia patients, including the presence of chronic generalized pain and female dominance. In addition, the intermittent cold stress‐induced generalized pain is abolished in lysophosphatidic acid receptor type‐1 knockout mice, as reported in many cases of neuropathic pain models. This study aimed to identify the brain loci involved in the intermittent cold stress generalized pain response and test their dependence on the lysophosphatidic acid receptor type‐1. Positron emission tomography analyses using 2‐deoxy‐2‐[18F]fluoro‐d‐glucose in the presence of a pain stimulus showed that intermittent cold stress causes a significant increase in uptake in the ipsilateral regions, including the salience networking‐related anterior cingulate cortex and insular cortex and the cognition‐related hippocampus. A significant decrease was observed in the default mode network‐related posterior cingulate cortex. Almost these intermittent cold stress‐induced changes were abolished in lysophosphatidic acid receptor type‐1 knockout mice. There results suggest that the intermittent cold stress‐induced generalized pain response is mediated by the lysophosphatidic acid receptor type‐1 in specific brain loci related to salience networking and cognition, which may lead to further developments in the treatment of fibromyalgia. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png European Journal of Neuroscience Wiley

Lysophosphatidic acid receptor type‐1 mediates brain activation in micro‐positron emission tomography analysis in a fibromyalgia‐like mouse model

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References (81)

Publisher
Wiley
Copyright
© 2022 Federation of European Neuroscience Societies and John Wiley & Sons Ltd
ISSN
0953-816X
eISSN
1460-9568
DOI
10.1111/ejn.15729
Publisher site
See Article on Publisher Site

Abstract

The intermittent cold stress‐induced generalized pain response mimics the pathophysiological and pharmacotherapeutic features reported for fibromyalgia patients, including the presence of chronic generalized pain and female dominance. In addition, the intermittent cold stress‐induced generalized pain is abolished in lysophosphatidic acid receptor type‐1 knockout mice, as reported in many cases of neuropathic pain models. This study aimed to identify the brain loci involved in the intermittent cold stress generalized pain response and test their dependence on the lysophosphatidic acid receptor type‐1. Positron emission tomography analyses using 2‐deoxy‐2‐[18F]fluoro‐d‐glucose in the presence of a pain stimulus showed that intermittent cold stress causes a significant increase in uptake in the ipsilateral regions, including the salience networking‐related anterior cingulate cortex and insular cortex and the cognition‐related hippocampus. A significant decrease was observed in the default mode network‐related posterior cingulate cortex. Almost these intermittent cold stress‐induced changes were abolished in lysophosphatidic acid receptor type‐1 knockout mice. There results suggest that the intermittent cold stress‐induced generalized pain response is mediated by the lysophosphatidic acid receptor type‐1 in specific brain loci related to salience networking and cognition, which may lead to further developments in the treatment of fibromyalgia.

Journal

European Journal of NeuroscienceWiley

Published: Aug 1, 2022

Keywords: default mode network; fibromyalgia; lysophosphatidic acid receptor; microPET; salience network

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