Figure 7.
High glucose-induced UII synthesis contributes to GMC proliferation. (A) Mean data obtained from mouse UII ELISA showing that exposure of mouse GMCs to high glucose for 24 (n = 6 each) and 72 (n = 9 each) h increases UII production. (B,C) Western blot and mean data illustrating that exposure of mouse GMCs to high glucose for 24 and 72 h (n = 5 each) does not alter UTR protein expression. (D) Cell growth curves demonstrating GMC proliferation under normal glucose (n = 6), normal glucose + mannitol (n = 6), high glucose (n = 6) and urantide (1 µM) + high glucose (n = 6). “n” for cell proliferation assay denotes number of wells. Each time point represents four independent scans per well of the microplates. *P < 0.05 vs. HG (30–72 h); #P < 0.05 vs. HG; (32–72 h); $P < 0.05 vs. NG (54–72 h); %P < 0.05 vs. NG + mannitol (62–72 h). HG (high glucose); NG (normal glucose).