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Published on: June 16, 2023
Plasma Cytochrome c Detection Using a Highly Sensitive Electrochemiluminescence Enzyme-Linked Immunosorbent Assay
Jeejabai Radhakrishnan1, Rovi Origenes2, Gina Littlejohn3
1Resuscitation Institute, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA.
Background:
Cytochrome c is an intermembrane mitochondrial protein that is released to the bloodstream following mitochondrial injury.
Methods And Results:
We developed an electrochemiluminescence immunoassay to measure cytochrome c in human and rat plasma, which showed high sensitivity with broad dynamic range (2-1200 ng/mL in humans and 5-500 ng/mL in rat) and high assay reproducibility (inter-assay coefficient <6% in humans and <10% in rat). In patients after blunt trauma, plasma cytochrome c directly correlated with injury severity. In rats after cardiac resuscitation, plasma cytochrome c inversely correlated with survival and responsiveness to mitochondrial protective interventions.
Conclusions:
The cytochrome c assays herein presented have high sensitivity, wide dynamic range, and high reproducibility well suited for biomarker of mitochondrial injury.
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