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Updated: Feb 7, 2026

An Integrated Workflow of Identification and Quantification on FDR Control-Based Untargeted Metabolome
Published on: September 20, 2022
Mechanistic insights into postoperative delirium using untargeted high-throughput proteomics in elderly patients - a
Mario Lamping1, Maria Heinrich1,2, Vadim Farztdinov3
1Department of Anaesthesiology and Intensive Care Medicine (CCM, CVK), Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, Berlin, 13353, Germany.
Postoperative delirium (POD) in elderly patients is linked to immune and complement system pathways. A novel protein signature may help identify patients at risk for this common surgical complication.
Area of Science:
- Biochemistry
- Geriatric Medicine
- Proteomics
Background:
- Postoperative delirium (POD) is a significant complication in elderly patients undergoing surgery, with poorly understood molecular mechanisms.
- Early identification and understanding of POD pathogenesis are crucial for developing effective prevention and treatment strategies.
Purpose of the Study:
- To investigate the molecular patterns associated with POD using untargeted high-throughput proteomics.
- To identify potential biomarkers for predicting POD risk in elderly surgical patients.
Main Methods:
- Prospective observational study involving elderly patients (≥65 years) undergoing elective surgery.
- High-throughput liquid chromatography mass spectrometry of pre- and postoperative plasma samples.
- Matched case-control analysis with pathway enrichment, including assessment of innate immune response and complement system activation.
Main Results:
- Identified significant associations between POD and pathways involved in innate immune response and complement system activation.
- Butyrylcholinesterase exhibited distinct preoperative and postoperative regulation patterns in POD patients.
- A signature of 8 preoperative proteins demonstrated high sensitivity (86%) and specificity (79%) for classifying POD risk.
Conclusions:
- Untargeted proteomics is a viable method for characterizing POD pathogenesis.
- A specific protein signature shows promise for early POD risk stratification in elderly surgical patients.
- Further research in larger cohorts is needed to validate findings and enhance mechanistic understanding of POD.
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