Restricting sulfur-containing amino acid intake does not prevent AKI after cardiac surgery
Restricting sulfur-containing amino acid intake did not prevent acute kidney injury after cardiac surgery according to a recent study published in the Journal of the American Heart Association
Acute kidney injury (AKI) is a major risk factor for chronic kidney disease and increased mortality. Until now, no compelling preventive or therapeutic strategies have been identified. Dietary interventions have been proven highly effective in organ protection from ischemia reperfusion injury in mice and restricting dietary intake of sulfur‐containing amino acids (SAA) seems to be instrumental in this regard.
The UNICORN trial aimed to evaluate the protective impact of restricting SAA intake before cardiac surgery on incidence of AKI.
In this single‐center, randomized, controlled, double‐blind trial, 115 patients were assigned to a SAA‐reduced formula diet (LowS group) or a regular formula diet (control group) in a 1:1 ratio for 7 days before scheduled cardiac surgery. The primary end point was incidence of AKI within 72 hours after surgery, secondary end points included increase of serum creatinine at 24, 48, and 72 hours as well as safety parameters. Quantitative variables were analyzed with nonparametric methods, while categorical variables were evaluated by means of Chi‐square or Fisher test.
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