text: Firstly, in the normal human renal epithelial HK-2 cells, the measurement of the expression of 30 previously reported << NRF2 >> target genes in response to NRF2 inducers ([[ sulforaphane ]], tert-butylhydroquinone, cinnamic aldehyde, and hydrogen peroxide) showed that the aldo-keto reductase (AKR) 1C1 is highly inducible by all treatments.