Figure 4 | Scientific Reports

Figure 4

From: Different Antioxidant Efficacy of Two MnII-Containing Superoxide Anion Scavengers on Hypoxia/Reoxygenation-Exposed Cardiac Muscle Cells

Figure 4

Overall percentages of the H2M2 (a) and H2Q2 (b) complexed species with MnII, CaII MgII and NaI as a function of pH in competitive systems containing MnII (1 μM), CaII, (2.5 mM), MgII (1.5 mM) and NaI (165 mM) and H2M2 (1 μM) or H2Q2 (1 μM). Σ[Mn(HxQ2)]x+ = [MnQ2] + [Mn(HQ2)]+ + [Mn(H2Q2)]2+; Σ[Mn(HxM2)]x+ = [MnM2] + [Mn(HM2)]+ + [Mn(H2M2)]2+; [Σ[HxQ2](x − 2)+ = [Q2]2− + [HQ2]− +[H2Q2]− + [H3Q2]+ + [H4Q2]2+ + [H6Q2]4+; [Σ[HxM2](x − 2)+ = [M2]2− + [HM2]− + [H2M2] +[H3M2]+ + [H4M2]2+.

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