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Urinary extracellular vesicles and micro-RNA as markers of acute kidney injury after cardiac surgeryMiller, Douglas; Eagle-Hemming, Bryony; Sheikh, Sophia; Joel-David, Lathishia; Adebayo, Adewale; Lai, Florence Y; Roman, Marius; Kumar, Tracy; Aujla, Hardeep; Murphy, Gavin J; Woźniak, Marcin J
Scientific reports, 06/2022, Letnik: 12, Številka: 1Journal Article
Abstract We hypothesised that measuring changes in urinary levels of EV and miR will predict the onset of acute kidney injury in cardiac surgery patients. The study was performed in the cohort of the REVAKI-2 trial. Urine samples were collected before and 24 h after the procedure from 94 cardiac surgery patients. Urinary particle concentrations and size distribution were assessed using NanoSight. EV derivation and levels were measured using flow cytometry. Samples from 10 selected patients were sequenced, and verification was performed with advanced TaqMan assays in samples from all patients. Urinary particle concentrations significantly increased in patients with AKI after surgery, with the percentage of EV positive for CD105 and β1-integrin also increasing. Pre-surgery podocalyxin-positive EV were significantly lower in patients with AKI. Their levels correlated with the severity of the injury. Pre-operative miR-125a-5p was expressed at lower levels in urine from patients with AKI when adjusted for urinary creatinine. Levels of miR-10a-5p were lower after surgery in AKI patients and its levels correlated with the severity of the injury. Pre-operative levels of podocalyxin EVs, urinary particle concentrations and miR-125a-5p had moderate AKI predictive value and, in a logistic model together with ICU lactate levels, offered good (AUC = 82%) AKI prediction.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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