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Exploring Albumin Functionality Assays: A Pilot Study on Sepsis Evaluation in Intensive Care Medicine
Gerd Klinkmann1,2, Katja Waterstradt3, Sebastian Klammt4
1Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Medical Center Rostock, Schillingallee 35, 18057 Rostock, Germany.
International Journal of Molecular Sciences
|August 26, 2023
Summary
Human serum albumin (HSA) function, including its binding and detoxification capacities, is significantly reduced in critically ill sepsis patients. Measuring these albumin functionalities may aid in diagnosing sepsis and developing targeted therapies.
Area of Science:
- Biochemistry
- Clinical Medicine
- Critical Care
Background:
- Human serum albumin (HSA) is a key plasma protein with crucial binding and scavenging functions.
- Albumin's binding capacity is vital for its efficacy but can be impaired in disease states.
- Limited data exists on HSA functional properties in sepsis and septic shock patients.
Purpose of the Study:
- To assess albumin-binding capacity (ABiC), binding efficiency (BE), and detoxification efficiency (DTE) in critically ill patients.
- To determine if these albumin functionalities can differentiate sepsis patients from controls.
- To explore correlations between albumin function and clinical parameters in sepsis.
Main Methods:
- Prospective, non-interventional clinical trial involving 26 intensive care patients.
- Quantification of unbound dansyl sarcosine to determine ABiC.
- Electron paramagnetic resonance fatty acid spin-probe used to evaluate BE and DTE.
Main Results:
- ABiC, BE, and DTE significantly differentiated sepsis/septic shock patients from controls (AUROC > 0.8).
- Binding efficiency (BE) showed diagnostic performance comparable to procalcitonin.
- Reduced albumin functionality correlated with inflammation and hepatic/renal insufficiency parameters.
Conclusions:
- Albumin-binding function is notably impaired in critically ill patients with sepsis or septic shock.
- Assessing HSA functionalities offers potential for novel diagnostic and therapeutic strategies in sepsis.
- Patient-specific albumin function metrics could inform personalized treatment algorithms.
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