The study sought to identify the role of Annexin A1 as a congestion marker in acute heart failure, and to identify its putative role in predicting clinical outcomes.
Annexin A1 (AnxA1) is a protein that inhibits inflammation following ischemia-reperfusion (I-R) injury in cardiorenal tissues. Since acute heart failure (AHF) is a state of tissue hypoperfusion, we hypothesized that plasma AnxA1 levels are altered in AHF.
In The Renal Optimization Strategies Evaluation (ROSE) trial, patients hospitalized for AHF with kidney injury were randomized to receive dopamine, nesiritide, or placebo for 72 hours in addition to diuresis. In a sub-analysis, plasma AnxA1 levels were measured at baseline and at 72 hours in 275 patients. Participants were divided into three tertiles based on their baseline AnxA1 levels.
The prevalence of peripheral edema 2+ increased with increasing AnxA1 levels (p < 0.007). Cystatin C, blood urea nitrogen, and kidney injury molecule-1 plasma levels were higher among participants in tertile 3 vs tertiles 1 or 2 (p < 0.05). Patients with a congestion score of 4 had a mean baseline AnxA1 level 8.63 units higher than those with a congestion score of 0 (p= 0.03). Patients in tertiles 2 and 3 were twice as likely to experience creatinine elevation as patients in tertile 1 (p= 0.03). Patients in tertiles 2 and 3 were at a higher risk of 60-day all-cause mortality or heart failure hospitalization and 180-day all-cause mortality (p <0.05).
Among patients hospitalized for AHF with impaired kidney function, elevated AnxA1 levels are associated with worse congestion, higher risk for further creatinine elevation, and higher rates of 60-day morbidity or all-cause mortality & 180-day all-cause mortality. Identifier: NCT01132846.

Copyright © 2020. Published by Elsevier Inc.