Schematic diagram illustrates OxyHb-induced KV current suppression via enhanced MMP activation and HB-EGF shedding. Abbreviations: OxyHb: oxyhemoglobin, MMP: matrix metalloprotease, ADAM: a disintegrin and metalloprotease, HB-EGF: heparin binding epidermal growth factor like growth factor, EGFR: epidermal growth factor receptor, PY: phosphorylated tyrosine residue, KV channel: voltage-dependent potassium channel. Reproduced from Koide et al., American Journal of Physiolgy, 2007 [9].