EIF2AK3 and acute kidney injury: Compared to the AKI + IA group, those treated with IA EVs had significant upregulation of pAMPK (0.3 ± 0.1 vs. 2.6 ± 0.4 relative expression, p < 0.05) and upregulation of pERK that did not reach statistical significance (1.3 ± 0.2 vs. 1.6 ± 0.2 relative expression, p > 0.05).