Multi-omics to predict changes during cold pressor test.

Area of Science:

• Pain research
• Multi-omics
• Molecular mechanisms

Background:

• The cold pressor test (CPT) is a standard method for assessing pain tolerance and cardiovascular reactions.
• Investigating molecular mechanisms underlying CPT responses requires advanced analytical techniques.

Purpose of the Study:

• To explore molecular mechanisms involved in the cold pressor test (CPT) using multi-omics analyses.
• To assess the utility of transcriptomics, metabolomics, and steroid profiling in understanding pain responses.

Main Methods:

• Phenotypic assessment before and after CPT in 22 females.
• Collection of blood samples for RNA-Sequencing, steroid profiling, and untargeted metabolomics.
• Analysis of omics data at feature- and systems-levels (PCA, PLS) and integrative multi-omics analysis.

Main Results:

• Partial least squares (PLS) regression significantly distinguished time points using metabolomic and transcriptomic data, unlike principal component analysis (PCA) or physiological measures.
• Transcriptomic and metabolomic data revealed key biological processes, including lipid metabolism and stress response, at multiple analytical levels.
• Integrative multi-omics approach highlighted biologically relevant pathways during CPT.

Conclusions:

• Multi-omics strategies are powerful tools for pain research, providing insights at both feature- and systems-levels.
• These approaches should be utilized in intervention studies, like pain provocation tests, to elucidate complex biological mechanisms.
• Multi-omics analysis enhances our understanding of the biological underpinnings of pain and stress responses.