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4 sie 2017 · Cellular iron homeostasis is maintained by iron and heme transport proteins that work in concert with ferrireductases, ferroxidases, and chaperones to direct the movement of iron into, within, and out of cells. Systemic iron homeostasis is regulated by the liver-derived peptide hormone, hepcidin.
8 sie 2014 · Iron absorption is precisely regulated by a range of systemic and cellular mediators (Fig. 2). Liver-derived, circulating HEPC regulates duodenal iron absorption and also modulates iron release from stores in hepatocytes and RE macrophages (which recycle iron from senescent erythrocytes).
1 mar 1998 · This review summarizes current knowledge of and hypotheses on each of the three steps of iron absorption: uptake from the intestinal lumen into mucosal cells, transit through the cell, and release from the cells into the body.
18 maj 2022 · Iron is the trace element. We get the iron from the dietary sources. The enterocytes lining the upper duodenal of the intestine absorb the dietary iron through a divalent metal transporter (DMT1). The absorbed ferrous iron is oxidized to ferric iron in the body.
27 lis 2002 · In multicellular organisms, iron must be distributed from the site of absorption to cells that require iron. Genetic and molecular approaches have defined the mechanisms of iron uptake into absorptive cells and the subsequent transport of iron into plasma.
6 sty 2011 · The intracellular step of iron absorption refers to the intracellular distribution of the newly transported iron to the basolateral surface, to the mitochondria (e.g., biosynthesis of heme and iron-sulfur cluster), or to iron binding proteins (e.g., non-heme iron binding proteins and ferritin).
26 lip 2007 · Iron regulatory proteins (IRPs) orchestrate the posttranscriptional regulation of critical iron metabolism proteins at the cellular level. Redundancy between IRP1 and IRP2 associated with embryonic lethality of doubly IRP-deficient mice has precluded the study of IRP function in vivo.
