KEAP1 and systemic lupus erythematosus: Co-immunoprecipitation analysis validated the interactions of nuclear factor erythroid 2-related factor 2 (Nrf2) and Kelch-like ECH-associated protein 1 (Keap1).<h4>Results</h4>HDAC3 levels were increased in the serum and kidney tissues of patients with SLE and LN, and the LN group posted the highest level.