Higher serum resistin levels were reported to be associated with increased mortality risk. We aimed to assess the predictive value of resistin levels in perivascular adipose tissue (PVAT) around the left main coronary artery (LMCA) for mid-term survival of patients with advanced coronary artery disease (CAD).This was a prospective study including patients referred for elective coronary artery grafting in 2016 and 2017, performed using a standard approach. A sample of PVAT was harvested and resistin levels were measured using an enzyme-linked immunosorbent assay. Patients were followed from the day of the procedure until March 2021. In each patient, the SYNTAX score and EuroSCORE II were calculated. The study included 108 patients aged 68.1 ±7.9 years, including 83 men (76.9%). The duration of follow-up was 731 (range, 275-1020) for nonsurvivors and 1418 median (range, 1174-1559) for survivors (p <0.001). Patients who died had a higher SYNTAX score, higher EuroSCORE II, and lower resistin levels in PVAT than survivors (p <0.001, p = 0.004, and p = 0.041, respectively). A stepwise regression analysis revealed that survival was related to resistin concentrations above the median value (hazard ratio [HR], 4.67; 95% CI, 1.02-21.4; p = 0.048) and EuroSCORE II (used as continuous variable; HR, 1.55; 95% CI, 1.16-2.07; p = 0.003). The mid-term mortality in patients with advanced CAD is associated with low resistin concentrations in PVAT surrounding the LMCA.

Department of Cardiac Surgery Wroclaw Medical University Wroclaw Poland

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