Unraveling Mechanisms Regulating Systemic Iron Homeostasis
نویسندگان
چکیده
منابع مشابه
Systemic iron homeostasis.
The iron hormone hepcidin and its receptor and cellular iron exporter ferroportin control the major fluxes of iron into blood plasma: intestinal iron absorption, the delivery of recycled iron from macrophages, and the release of stored iron from hepatocytes. Because iron losses are comparatively very small, iron absorption and its regulation by hepcidin and ferroportin determine total body iron...
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As a principal aspect of their scavenging function, splenic and hepatic macrophages phagocytize and degrade senescent and damaged erythrocytes to recover iron, mainly for the production of hemoglobin in new erythrocytes but also for other carriers and enzymes requiring iron. Splenic red pulp macrophages are specialized for iron recycling with increased expression of proteins for the uptake of h...
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Iron is an essential element in our daily diet. Most iron is required for the de novo synthesis of red blood cells, where it plays a critical role in oxygen binding to hemoglobin. Thus, iron deficiency causes anemia, a major public health burden worldwide. On the other extreme, iron accumulation in critical organs such as liver, heart, and pancreas causes organ dysfunction due to the generation...
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Humans possess elegant control mechanisms to maintain iron homeostasis by coordinately regulating iron absorption, iron recycling, and mobilization of stored iron. Dietary iron absorption is regulated locally by hypoxia inducible factor (HIF) signaling and iron-regulatory proteins (IRPs) in enterocytes and systematically by hepatic hepcidin, the central iron regulatory hormone. Hepcidin not onl...
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PCBs are a family of persistent environmental toxicants with a wide spectrum of toxic features, such as immunotoxicity, hepatoxicity, endocrine disruption effects, and oncogenic effects. To date, little has been done to investigate the potential influence of PCB exposure on iron metabolism. Deregulated iron would lead to either iron deficiency or iron excess, coupled with various diseases such ...
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ژورنال
عنوان ژورنال: Hematology
سال: 2011
ISSN: 1520-4391,1520-4383
DOI: 10.1182/asheducation-2011.1.532