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Changes in the iron metabolism and its regulation in patients with end-stage renal disease treated by hemodialysis and kidney transplantion
Turková Sedláčková, Terezie ; Racek, Jaroslav (advisor) ; Zima, Tomáš (referee) ; Teplan, Vladimír (referee)
Iron is a very important biogenous trace element, which is involved in many of cell processes in organism. For its character iron can be also involved in Fenton reaction, where a toxic hydroxyl radical is produced. The iron metabolism is very carefully regulated in order to avoid formation of hydroxyl radical. Iron Responsive Proteins-Iron Responsive Elements (IRPs-IREs) system is involved in the regulation of iron metabolism on cell level, small peptide hormon hepcidin is involved in the regulation on systemic level. Hepcidin was discovered in 2000 as a peptide with antimicrobial properties. It is a key regulator of iron metabolism, as was discovered later. The target of hepcidin is ferroportin-the only known iron cell exporter. The expression of hepcidin is downregulated by hypoxia and anemia and upregulated by iron overload and inflammation. Hemodialyzed patients suffer from anemia very often. This anemia is caused by many factors, e.g. inadequate production of erythropoietin, chronic inflammation, chronic oxidative stress, blood loss during hemodialysis process or lower lifetime of red blood cells. We realized three studies on the patients with end-stage renal disease in our laboratories. Our aim was to find a relationship of hepcidin and other parameters of iron metabolism, inflammation and...
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Changes in the iron metabolism and its regulation in patients with end-stage renal disease treated by hemodialysis and kidney transplantion
Turková Sedláčková, Terezie ; Racek, Jaroslav (advisor) ; Zima, Tomáš (referee) ; Teplan, Vladimír (referee)
Iron is a very important biogenous trace element, which is involved in many of cell processes in organism. For its character iron can be also involved in Fenton reaction, where a toxic hydroxyl radical is produced. The iron metabolism is very carefully regulated in order to avoid formation of hydroxyl radical. Iron Responsive Proteins-Iron Responsive Elements (IRPs-IREs) system is involved in the regulation of iron metabolism on cell level, small peptide hormon hepcidin is involved in the regulation on systemic level. Hepcidin was discovered in 2000 as a peptide with antimicrobial properties. It is a key regulator of iron metabolism, as was discovered later. The target of hepcidin is ferroportin-the only known iron cell exporter. The expression of hepcidin is downregulated by hypoxia and anemia and upregulated by iron overload and inflammation. Hemodialyzed patients suffer from anemia very often. This anemia is caused by many factors, e.g. inadequate production of erythropoietin, chronic inflammation, chronic oxidative stress, blood loss during hemodialysis process or lower lifetime of red blood cells. We realized three studies on the patients with end-stage renal disease in our laboratories. Our aim was to find a relationship of hepcidin and other parameters of iron metabolism, inflammation and...
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