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Updated: May 16, 2026
06:34
Identification of Rare Bacterial Pathogens by 16S rRNA Gene Sequencing and MALDI-TOF MS
Published on: July 11, 2016
Sepsis in transit: from clinical to molecular classification
Critical Care (London, England)
|November 16, 2012
Summary
Researchers identified two distinct molecular subtypes of sepsis in adults using neutrophil gene expression. This discovery could pave the way for a new neutrophil expression-based sepsis classification.
Area of Science:
- Critical Care Medicine
- Molecular Biology
- Genomics
Background:
- Sepsis classification currently lacks molecular precision.
- Neutrophil transcriptional profiles offer potential for novel subtyping.
Purpose of the Study:
- To discover and validate molecular subtypes of adult sepsis using neutrophil gene expression.
- To identify potential therapeutic targets based on distinct molecular profiles.
Main Methods:
- Analysis of circulating neutrophil transcriptional expression in derivation and validation cohorts.
- Application of partitioning around medoid and hierarchical clustering for subtyping.
- Pathway and gene expression analysis to characterize subtypes.
Main Results:
- Identification of two transcriptionally distinct sepsis subtypes.
- Enrichment of chemokine, cytokine, and Toll-like receptor signaling pathways in subtypes.
- Significant differences in the expression of sepsis-related drug target genes between subtypes.
- Molecular subtype 1 showed a higher proportion of severe sepsis.
Conclusions:
- Neutrophil gene expression can define distinct molecular subtypes of sepsis.
- These subtypes exhibit differential pathway activation and gene expression.
- Further research with larger cohorts is needed to validate these findings and explore therapeutic implications.
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