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- W3080596874 abstract "Deferoxamine (DFO), an iron chelator, is used therapeutically for the removal of excess iron in multiple clinical conditions such as beta thalassemia and intracerebral hemorrhage. DFO is also used as an iron chelator and hypoxia-mimetic agent in in vivo and in vitro basic research. Here we unexpectedly discover DFO to be a nitric oxide (NO) precursor in experiments where it was intended to act as an iron chelator. Production of NO from aqueous solutions of DFO was directly observed by ozone-based chemiluminescence using a ferricyanide-based assay and was confirmed by electron paramagnetic resonance (EPR). DFO also produced NO following exposure to ultraviolet light, and its incubation with sheep adult and fetal blood resulted in considerable formation of iron nitrosyl hemoglobin, as confirmed by both visible spectroscopy and EPR. These results suggest that experiments using DFO can be confounded by concomitant production of NO, and offer new insight into some of DFO's unexplained clinical side effects such as hypotension." @default.
- W3080596874 created "2020-09-01" @default.
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- W3080596874 date "2020-11-01" @default.
- W3080596874 modified "2023-10-17" @default.
- W3080596874 title "Deferoxamine produces nitric oxide under ferricyanide oxidation, blood incubation, and UV-irradiation" @default.
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- W3080596874 doi "https://doi.org/10.1016/j.freeradbiomed.2020.08.004" @default.
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