Figure 4.

1μM Ba²⁺ does not potentiate aspartate uptake by cultured astrocytes or by HeLa cells expressing glutamate transporters. (A) Summary graph of aspartate uptake by cultured astrocytes in control conditions (Ctrl) or in the presence of 1 μM BaCl₂ (Ba²⁺). (B) Summary graph of aspartate uptake by HeLa cells expressing EAAT1 in control conditions (Ctrl), in the presence of 2 μM TFB-TBOA, or in the presence of 1 μM BaCl₂ (Ba²⁺). (C) Summary graph of aspartate uptake by HeLa cells expressing EAAT2 in control conditions (Ctrl), in the presence of 2 μM TFB-TBOA, or in the presence of 1 μM BaCl₂ (Ba²⁺). Error bars—SEM. ^**P < 0.01; N.S.—non significant; unpaired t-test.