Effect of high d-glucose on prorenin and renin expression in RMCs. High-glucose exposure increased prorenin mRNA (A) and prorenin and renin protein (B). Renin protein (C) increased in RMCs culture supernatants in response to high-glucose exposure as demonstrated by immunoprecipitation (IP). Immunofluorescence staining of prorenin and renin (D). NEG, negative control (no antibody control); control, 30 mm l-glucose; glucose, 30 mm d-glucose; KD, knockdown; WB, Western blot; Ab, antibody.