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The neuronal tyrosine kinase receptor ligand ALKAL2 mediates persistent pain

ABSTRACT: To identify putative genes that could contribute to the phenotypic plasticity of TRPV1 nociceptors in inflammation-induced sensitization, we used the Complete Freund’s Adjuvant (CFA) model of chronic inflammatory pain. Three days post intraplantar injection of CFA, ipsilateral and contralateral lumbar DRG neurons were separated, and TRPV1-pHluorin neurons were purified by FACS and analyzed through the GeneChip™ Mouse Gene 2.0 ST Array. The array analysis provided a complete expression profile of mRNA between contralateral and ipsilateral TRPV1 neurons following inflammatory insult. In inflammatory condition, we found >100 genes to be up or down regulated in TRPV1 neurons.

ORGANISM(S): Mus musculus

PROVIDER: GSE201227 | GEO | 2022/04/22

REPOSITORIES: GEO

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FACS purified Nav1.8 lineage sensory neuron whole transcriptome changes following peripheral inflammation (CFA) or sciatic nerve injury (SNI).

Project description:The goal of this study was to analyze global gene expression in FACS purified Nav1.8 lineage sensory neurons, which include nociceptor neurons that detect damaging/noxious stimuli, following peripheral inflammation by intraplantar injection of Complete Freund's Adjuvant (CFA) or Sciatic Nerve Injury (SNI) by nerve transection. Nav1.8 Trangsgenic TdTomato+ neurons were purified from Lumbar L4-L6 dorsal root ganglia (DRG) by flow cytometry from mice on the ipsilateral or contralateral sides, following Complete Freund's Adjuvant injection (day 1) or sciatic nerve transection (day 5). Neurons were then analyzed for transcriptional gene expression by microarray analysis.

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2018-06-11 | E-MTAB-6864 | biostudies-arrayexpress

RNA sequencing profiling of mRNAs, lncRNAs and circRNAs in Trigeminal Ganglion following Temporomandibular Joint inflammation

Project description:The collected TGs from experimental (Complete Freund’s Adjuvant, CFA) and control (Saline) groups were processed for deep RNA sequencing. We then performed gene expression profiling analysis using data obtained from RNA-seq of 3 different groups(Saline/CFA3D/CFA6D).

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Transcriptional analysis of trigeminal ganglia in a CFA-induced rat orofacial pain model

Project description:Although several underlying pathophysiological processes have been explored, the origin and precise pathomechanism of migraine are still being debated. Inflammatory pathways have been suggested to play role in migraine, trigeminal nociceptor sensitisation, thereby causing hyperalgesia and allodynia. The aim of the present study was to investigate gene expression changes in trigeminal ganglia (TRG), central trigeminal nucleus caudalis (TNC) and peripheral blood mononuclear cells (PBMC) evoked by Complete Freund’s Adjuvant (CFA) induced peripheral inflammation. 512 differentially expressed genes were found between CFA-treated and contralateral TRG samples 7 days after CFA injection. The mRNA expression changes of G-protein coupled receptor 39 (Gpr39), kisspeptin-1 receptor (Kiss1r), kisspeptin (Kiss1) and Lkaaear1 were selected for validation. They were most upregulated on day 3 in TRGs of the CFA-treated side. CFA-induced significant orofacial mechanical allodynia in one day with a maximum on day 3. This correlated with patterns of neuronal (Fosb), glial (Iba1), and astrocyte (Gfap) activation markers in both TRG and TNC, and surprisingly in PBMCs. Similar transcriptional changes of Cgrp, the well-known key molecule in migraine pathophysiology, were also revealed. In TNCs, gene expression changes similar to TRGs were observed but Kiss1r transcripts were not significantly altered while Neurod2 was observed only in TNC. These results could indicate the involvement of Gpr39, Kiss1r and synaptic plasticity associated Lkaaear1, Neurod2 genes in the cascade of events resulting in the sensitization underlying migraine headache and the accompanying facial allodynia.

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2022-09-10 | GSE213034 | GEO

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Nociceptor HDAC4 regulates inflammatory pain

2015-04-23 | GSE62405 | GEO

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