Standard parenteral iron preparations such as ferric sucrose and ferric gluconate are considered to be degraded in the reticuloendothelial cells. The iron is subsequently incorporated into transferrin. It was also reported that these iron preparations donate iron directly to plasma transferrin. Hepatocytes seemed unaffected. We show that this picture is incorrect. To obtain quantitative data, i...

The iron stores of 32 healthy pregnant women were evaluated longitudinally during pregnancy and 6 months post partum by serum ferritin assay and by bone marrow iron content. Half of the women were receiving oral iron while the others were not given iron supplementation. Women receiving iron could maintain their iron stores throughout the pregnancy. By contrast, women without iron therapy had lo...

background: the world health organization estimates that 58% of pregnant women in developing countries are anemic. in spite of the fact that most ministries of health in developing countries have policies to provide pregnant women with iron supplementation, prevalence of maternal anemia has not declined significantly. the aim of this study was to assess adherence to the current recommendation i...

background oxidative stress plays a major pathogenic role in liver injury following chronic hepatitis b. glutathione peroxidase (gpx) has a central role in regulating the oxidative state. hepatitis b virus (hbv) results in down-regulation of gpx. on the other hand, iron homeostasis is disrupted in hbv infected patients. therefore, the objective of this study was to assess the interplay of gpx a...

Nano-fertilizers can increase value of products in agriculture. Iron plays many important and essential roles in plant growth and development as compared to other micronutrients. In the present study, effects of different levels of enriched nano chelated Iron fertilizer (25, 50, 100, and 200 mg l-1)  were investigated in comparison with the common Iron (FeSO4.7H2O) on in vitro proliferation of ...

Oxidation of sulfide-containing ores is the main cause of Acid Mine Drainage (AMD), which is an environmental problem associated with both the abandoned and active mines. Iron-bearing sulfide minerals can be oxidized and form mine waters with high sulfate content, low pH, high electrical conductivity, high redox potential, and high concentrations of iron, aluminum, and other heavy metals. In th...

Iron is an essential micronutrient for plants, and plants have evolved adaptive mechanisms to improve iron acquisition from soils. Grafting on iron deficiency-tolerant rootstock is an effective strategy to prevent iron deficiency-chlorosis in fruit-tree crops. To determine the mechanisms underlying iron uptake in iron deficiency, two iron deficiency-tolerant citrus rootstocks, Zhique (ZQ) and X...

Interactions between iron and sulfide in domestic wastewater from a gravity sewer were investigated with particular emphasis on redox cycling of iron and iron sulfide formation. The concentration ranges of iron and total sulfide in the experiments were 0.4-5.4mgFeL(-1) and 0-5.1mgSL(-1), respectively. During anaerobic conditions, iron reduction kinetics were investigated and reduction rates amo...

As a unique electron donor and acceptor, iron is an essential element in most biological systems. However, its chemical reactivity can result in iron potentially becoming a toxin when present in excessive quantities; accordingly, total body iron must be tightly regulated. As humans have no physiological mechanism for the elimination of excess iron, body iron is controlled mainly by the degree o...

introduction: iron cycle is one of the most important biogeochemical processes which affect the availability of iron in soils. ferric iron oxides are the most abundant forms of iron in soils and sediments. ferric iron is highly insoluble at circumneutral ph. present investigations have shown that the structural ferric iron bound in clay minerals is reduced by some microorganisms. anaerobic bact...