Simultaneous detection of sepsis host response biomarkers in whole blood using electrochemical biosensor

Abstract

Sepsis is a silent killer, caused by a syndromic reaction of the body's immune system to an infection that is typically the ultimate pathway to mortality due to numerous infectious diseases, including COVID‐19 across the world. In the United States alone, sepsis claims 220,000 lives, with a dangerously high fatality rate between 25% and 50%. Early detection and treatment can avert 80% of sepsis mortality which is currently unavailable in most healthcare institutions. The novelty in this work is the ability to simultaneously detect eight (IL‐6, IL‐8, IL‐10, IP‐10, TRAIL, d‐dimer, CRP, and G‐CSF) heterogeneous immune response biomarkers directly in whole blood without the need for dilution or sample processing. The DETecT sepsis (Direct Electrochemical Technique Targeting Sepsis) 2.0 sensor device leverages electrochemical impedance spectroscopy as a technique to detect subtle binding interactions at the metal/semi‐conductor sensor interface and reports results within 5 min using only two drops (~100 μl) of blood. The device positively (r >0.87) correlated with lab reference standard LUMINEX for clinical translation using 40 patient samples. The developed device showed diagnostic accuracy greater than 80% (AUC >0.8) establishing excellent specific and sensitive response. Portable handheld user‐friendly feature coupled with precise quantification of immune biomarkers makes the device amenable in a versatile setting providing insights on patient's immune response. This work highlights an innovative solution of enhancing sepsis care and management in the absence of a decision support device in the continuum of sepsis care.

Microfluidic systems for infectious disease diagnostics

“…384 Subsequently, the system was validated by cohort studies with clinical samples. 385,386 Belushkin et al developed a digital nanoparticle-enhanced plasmonic imager for rapid and sensitive detection of CRP and PCT (Fig. 6c).…”

Navigating the Complexity of Scoring Systems in Sepsis Management: A Comprehensive Review

“…Application in sepsis management: The APACHE score, particularly APACHE III, has become integral in the realm of sepsis management for predicting patient outcomes and evaluating illness severity. Notably, studies have delved into the comparative effectiveness of APACHE III and other scoring systems, such as Simplified Acute Physiology Score II (SAPS II), in forecasting sepsis outcomes within ICUs [ 1 ]. The distinct predictive capabilities of APACHE III and SAPS II have been subject to scrutiny, revealing that neither system unequivocally outperforms the other in terms of accuracy [ 13 ].…”

“…The condition can progress rapidly, evolving into severe sepsis and septic shock if not promptly recognized and treated. Despite medical advancements, sepsis remains a leading cause of morbidity and mortality globally, underscoring the urgency of effective management strategies [ 1 ]. The complexity of sepsis necessitates systematic approaches for evaluating its severity and predicting patient outcomes.…”