Both body iron stores and dietary iron intake have been reported to increase risk of colorectal neoplasms. We assessed whether serum ferritin concentration was associated with recurrence of colorectal adenomas among 733 individuals with baseline determinations of ferritin as part of a multicenter clinical trial of antioxidant supplements for adenoma prevention. All study participants had at lea...

BACKGROUND AND AIMS Exercise-induced iron deficiency is a common finding in endurance athletes. It has been suggested recently that hepcidin may be an important mediator in this process. OBJECTIVE To determine hepcidin levels and markers of iron status during long-term exercise training in female runners with depleted and normal iron stores. METHODS Fourteen runners were divided into two gr...

Women have lower iron stores than men because of iron loss during their reproductive years. However, variation between women could result from differences in iron loss, aspects of iron homeostasis common to men and women, or a combination of both. We compared the effects of age, menopause, menstrual blood loss and the number of pregnancies (sex-specific factors), and the effects of genetic vari...

lack of the discussion of 2 important issues that may contribute to breast cancer in this older population: 1) the limited role dietary iron plays in determination of body iron stores and 2) the known remarkable increase in tissue iron stores that occurs after menopause (2). Because there are no known excretory pathways for iron, systemic iron homeostasis is strictly controlled by regulation of...

The defective tissues causing the microcytic anemia in mk/mk mice have been studied by transplantation of marrow erythrocyte precursors into lethally irradiated recipients. Microcytic (mk/mk) marrow in irradiated normal mice produced erythrocyte parameters, blood values, spleen/body weight ratios, and reticulocyte percentages characteristic of the microcytic anemia, but splenic iron stores rema...

BACKGROUND Correction of iron deficiency with oral or intravenous iron supplementation can reduce the severity of anemia in patients with CKD. Untreated iron deficiency is an important cause of hyporesponsiveness to ESA treatment. It is important to diagnose iron deficiency because treatment can readily correct the associated anemia and investigation for the cause of iron deficiency, which shou...

Tests of iron and folate nutrition have been carried out in early pregnancy and at delivery in 63 Bantu females. Accepted normal values for serum iron, and percentage saturation of transferrin, but not for unsaturated iron-binding capacity, for non-pregnant subjects were found to apply equally well in pregnancy. Concomitant folate deficiency in early pregnancy did not render tests of iron defic...

BACKGROUND We studied the effect of iron deficiency on liver regeneration and innate immunity - respiratory burst of PMN. METHODS Wistar rats, males (M) and females (F) had sham withdrawals or males (M-w) and females (F-w) had nine blood withdrawals every week. All rats were sacrificed in 10(th) week after 67% hepatectomy (PH) after (3)H-thymidin application. We determined erythrocyte and leu...

Any decrease in the availability of iron for incorporation into the heme moieties of hemoglobin results in an increase in the erythrocyte protoporphyrin concentration. Our aim was to compare protoporphyrin concentrations, determined spectrophotometrically, with body iron stores, as assessed from the amount of iron demonstrable by Prussian blue staining of bone marrow aspirates. The mean protopo...

Iron deficiency is the most common nutritional disorder worldwide and accounts for approximately one-half of anemia cases. The diagnosis of iron deficiency anemia is confirmed by the findings of low iron stores and a hemoglobin level two standard deviations below normal. Women should be screened during pregnancy, and children screened at one year of age. Supplemental iron may be given initially...