To fulfill their nutritional requirement for iron, bacteria utilize various iron sources which include the host proteins transferrin and lactoferrin, heme, and low molecular weight iron chelators termed siderophores. The iron sources are transported into the Gram-negative bacterial cell via specific uptake pathways which include an outer membrane receptor, a periplasmic binding protein (PBP), a...

Knowledge of minerai élément status and requirements in older people is incomplète and, for most éléments, derived by extrapolation from younger âge groups. Yet some valid conclusions can be drawn on the basis of known age-related changes in body composition, in energy needs, and in food intake to meet thèse requirements. In the following discussion I shall first deal with iron, the requirement...

The iron requirement for maximal cell yields of a fluorescent pseudomonad increases as the temperature of incubation is increased. On a succinate salts medium, maximal cell yields are attained at iron concentrations of 0.10 mug/ml of added iron at 20 C and at 3.0 mug/ml of added iron at 28 C. This bacterium does not grow in the basal medium at 31 C even in the presence of 0.01 to 10 mug/ml of a...

Intravenous iron therapy is a useful treatment for the rapid correction of iron deficiency anaemia and can be used to avoid or reduce the requirement for allogeneic blood transfusion. Several intravenous iron preparations are available commercially which differ in cost, mode of administration and side effect profile. There are few data directly comparing the efficacy of these preparations. In t...

BACKGROUND For many pregnant Canadian women, usual iron intakes from food appear to be inadequate compared with Dietary Reference Intake requirement estimates. OBJECTIVE Dietary intake modeling was undertaken to determine an amount of iron supplementation that would confer acceptably low prevalence of apparently inadequate and apparently excessive intakes. DESIGN The distribution of usual d...

OBJECTIVE To evaluate the efficacy of IV iron supplementation of anemic, critically ill trauma patients. DESIGN Multicenter, randomized, single-blind, placebo-controlled trial. SETTING Four trauma ICUs. PATIENTS Anemic (hemoglobin < 12 g/dL) trauma patients enrolled within 72 hours of ICU admission and with an expected ICU length of stay of more than or equal to 5 days. INTERVENTIONS Ra...

indium is a heavy metal belonging to group iiia. it is believed that indium may interfere with iron metabolism from the sites of absorption, transportation, utilization and storage in the cells. the present investigation was established to study and compare the binding of iron and indium to human apo-transferrin (apo-tf). pure human apo-tf was used and the binding activity of iron and indium, a...

today climate change is one of the most important human concerns this fact affected human life in different ways .  one of the most important impacts of climate change is on crops yield so that change in temperature  regime  particularly maximum and minimum  temperatures  is noticeably change plants production . in this research , is considered to  impact of climate change on water requirement ...