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To identify the hub gene related to complex regional pain syndrome

ABSTRACT: To identify the hub gene related to CRPS, the human keratinocyte cell lines (China Infrastructure of Cell Line Resource, Beijing, China) were used for RNA-seq analysis after OGD/R (4 control and 4 OGD/R samples) in early stage.

ORGANISM(S): Homo sapiens

PROVIDER: GSE266435 | GEO | 2026/05/01

REPOSITORIES: GEO

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Genome-wide expression profiling of complex regional pain syndrome

Project description:we successfully identified pain-related genes through genome-wide expression profiling in blood from CRPS patients. We found that 80 genes were differentially expressed between 4 CRPS patients (2 CRPS I and 2 CRPS II) and 5 controls (cut-off value: 1.5-fold change and p < 0.05). Most of those genes were associated with signal transduction, developmental processes, cell structure and motility, and immunity and defense. The expression levels of 12 genes selected from the microarray were confirmed in 24 CRPS patients and 18 controls by quantitative reverse transcription-polymerase chain reaction. We focused on matrix metalloproteinase 9 (MMP9) that showed statistically significant difference from controls and the highest relative fold change in CRPS II patients to controls by qPCR validation (6.4 ± 2.47 times and p = 0.001). Identification of pain-related genes in peripheral blood of complex regional pain syndrome (CRPS) using cDNA microarray. Comparative gene expression profiles in peripheral blood of 5 healthy controls and 4 CRPS patients.

2013-06-06 | E-GEOD-47603 | biostudies-arrayexpress

Genome-wide expression profiling of complex regional pain syndrome

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To identify the hub gene related to complex regional pain syndrome

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Expression profiling of contralateral dorsal root ganglia of a rat model of complex regional pain syndrome type-I uncovers potential mechanisms involved in mirror-image pain

Project description:Background: Mirror-image pain (MIP), which develops from the healthy body region contralateral to the actual injured site, is a mysterious pain phenomenon accompanying many chronic pain conditions, including complex regional pain syndrome (CRPS). However, the pathogenesis of MIP still remained largely unknown. The purpose of this study is to perform an expression profiling to identify genes related with MIP in an animal model of CRPS-I. Methods: We established a rat chronic post-ischemic pain (CPIP) model to mimic human CRPS-I. RNA-sequencing (RNA-Seq), bioinformatics, qPCR, immunostaining and animal behavioral assays were used to screen potential genes in contralateral dorsal root ganglia (DRG) that may be involved in MIP. Results: The CPIP model rats developed robust and persistent MIP in contralateral hind paws. Bilateral DRG neurons did not exhibit obvious neuronal damage. RNA-Seq of contralateral DRG from CPIP model rats identified a total 527 differentially expressed genes (DEGs) vs. control rats. The expression changes of several representative DEGs were verified by qPCR. Bioinformatics analysis indicated that immune system process, innate immune response and cell adhesion were among the mostly enriched biological processes, which are all important processes involved in pain sensitization, neuroinflammation and chronic pain. We further identified DEGs potentially involved in pain mechanisms or enriched in small- to medium-sized sensory neurons or TRPV1-lineage nociceptors. By comparing with published datasets summarizing genes enriched in pain mechanisms, we sorted out a core set of genes which might contribute to nociception and pain mechanism in MIP. Conclusions: We provided by far the first study to profile gene expression changes and pathway analysis of contralateral DRG for investigating MIP mechanisms. This work may provide novel insights into understanding the mysterious mechanisms underlying MIP.

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