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Query: UMLS:C0240066 (iron deficiency)
 7,156 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Dietary intake and biochemical nutritional status was studied in patients who had undergone total gastrectomy (TG, n = 10) or partial gastrectomy (PG, n = 10) several years ago. The dietary intake of energy, macronutrients and micronutrients was very similar in the two groups and was also similar to the intake reported for healthy subjects in Sweden. The concentration of alpha-tocopherol in serum was subnormal in the TG group and that of carotene in both groups of patients, and the values were also significantly lower in the TG group than in the PG group. This was probably due to fat malabsorption, since dietary intake was found to be adequate. The proportions of n-6 and n-3 polyunsaturated fatty acids in serum phosphatidylcholine were not significantly different between the TG and PG groups. Iron deficiency was found in three patients in the TG group. Three patients (two TG, one PG) had elevated serum alkaline phosphatase and one patient (PG) had subnormal cobalamin concentration. For ascorbic acid, folate, calcium, phosphorus, magnesium, zinc, copper and selenium, the serum concentrations were normal or close to normal. Although the stores of some micronutrients seemed smaller after total gastrectomy, no major differences in nutritional status were found between the TG and PG groups. For the demonstration of decreased micronutrient stores during long-term follow-up after gastrectomy, an extended profile of biochemical markers of nutritional status is recommended.
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PMID:Nutrient intake and biochemical markers of nutritional status during long-term follow-up after total and partial gastrectomy. 160 Sep 23

A group of 50 patients (26 men and 24 women, mean age 50 +/- 19 years and range 21 to 67) on chronic hemodialysis (HD) and with basal levels of hemoglobin (Hb) less than or equal to 8 g/dl was treated with recombinant human erythropoietin (r-HuEpo) during 3 months. r-HuEpo was started at 50 U/kg I.V. 3 times a week, immediately after each session of HD, for 4 weeks, and this dose was increased in steps of 25 U/kg until a Hb level of 12 g/dl or a maximum dose of 100 U/kg were reached. Complete blood counts and biochemical profile were performed before the first dose of r-HuEpo and once weekly and monthly respectively during the period of treatment. In 8 patients the red-cell life span was studied with cromium 51 labelled erythrocytes just before and after treatment. One patient had a grand mal seizure and the r-HuEpo was discontinued. In 44 patients the mean hematocrit increased from 21.8% to 32.1% and in the other 5 there were no response because of iron deficiency. There were no changes in leucocytes and platelets counts and consistent decreases in iron and ferritin serum concentrations were observed despite oral supplementation of iron. In the 8 patients studied the shortened erythrocyte survival did not suffer any significant variation with r-HuEpo. Predialysis creatinine, urea and phosphorus blood levels increased significantly at 3th month of treatment but there was no increase in potassium. In 32.6% of previously normotensive and hypertensive patients an increase in blood pressure was founded. Thrombosis of arteriovenous fistulas and other severe clinical side effects were not observed.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Treatment of anemia in patients with chronic kidney insufficiency in hemodialysis with erythropoietin]. 222 Apr 24

Terminal renal dysfunction (TRD) was induced in 2 groups of dogs by partial surgical ablation of the kidney. Dogs of a control group and of 1 of the TRD groups were maintained on a diet containing normal phosphorus concentration, whereas dogs of the other TRD group were maintained on a low-phosphorus diet. Mild anemia developed in dogs of both TRD groups and could not be attributed to iron deficiency, increased erythrocyte concentration of 2,3-diphosphoglycerate, or absolute deficiency of erythropoietin (EP). Subsequently, all dogs were acutely depleted of approximately 25% of their blood volume. Erythropoietin concentration in dogs of the TRD groups was lower than that of controls, however, erythroid regenerative capacity was comparable with that of control dogs when plasma parathyroid hormone (PTH) concentration was lowered by reduced dietary intake of phosphorus. The PCV in dogs of the chronic TRD groups had a slight positive correlation with serum EP concentration, and a significant (P less than 0.05) negative correlation with plasma PTH and serum phosphorus and creatinine concentrations, using a correlation matrix. There was no longer a significant correlation between plasma PTH concentration and PCV after controlling for serum creatinine concentration by use of a multiple linear regression analysis. A significant (P less than 0.05) negative correlation also was observed between plasma PTH and serum EP concentrations, but not between serum EP and phosphorus or creatinine concentrations. Significance of the EP and PTH association was reduced when analyzed, using a multiple linear regression analysis that included serum creatinine values.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Role of parathyroid hormone in the anemia of chronic terminal renal dysfunction in dogs. 261 21

Twenty-six adult patients with histologically confirmed celiac disease on gluten-free diet after apparent disease remission were reexamined at 4-6 months intervals for a mean period of 55.4 months (range 13-137). Eight patients remained clinically well with normal blood tests. Eighteen patients had clinical or biological abnormalities. Eleven patients reported repeated episodes of meteorism and abdominal pain and/or diarrhea which disappeared in 2 after lactose withdrawal. Iron deficiency and macrocytic anemia were sometimes observed in 5 and 4 patients respectively. Altered plasma calcium, phosphorus and alkaline phosphatase and/or bone densitometry findings were detected in 7 patients. Seventeen patients (12 presenting some of the above findings) agreed to a repeat biopsy: 13 of these showed grade II and 4 grade III abnormalities. Although adult celiac patients may show marked improvement during gluten-free diet, minor clinical disturbances and biochemical abnormalities may still be present.
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PMID:Clinical, biochemical and histological abnormalities in adult celiac patients on gluten-free diet. 408 41

The effect of the iron-deficient diets on osseous tissue formation was studied in long-term experiments. During intense growth, iron deficiency led to a decrease in the content of hexosamines, in the activity of phosphomonoesterase I and calcium, delay in collagen maturation in the femoral bones, as well as to phosphorus-calcium metabolic disorders. Histological examination revealed thickening of the articular cartilage, an increase in the number and volume of osteocytes, islets of the proliferative osteocytes on the part of the endosteum, and a number of dystrophic abnormalities.
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PMID:[Effect of iron-deficient diets on the formation of bone tissue]. 651 86

A table was made of the composition of mineral and trace elements in different classes of French food items. The P, Ca, Mg, Fe, Cu, Zn, Mn, I and Se contents of the main categories of food are presented. The mineral and trace element intakes of the average French consumer were calculated from national survey data concerning all food items purchased by households. The intakes and the sources of the different elements are given related to the energy. These results were calculated for male and female adults receiving 2700 kcal and 2000 kcal, respectively, and compared with the recommended dietary allowances (RDA). Phosphorus and calcium intakes were adequate, as was iron for men. The intakes of Mg, Cu, Mn were between 80 and 100% of the RDA. For Zn, I, Se the intakes were lower (50-80% of the RDA). The iron deficiency observed in women is serious, and the selenium deficit in men may induce real biochemical subdeficiencies with clinical consequences.
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PMID:The mineral and trace element composition in French food items and intake levels in France. 759 12

The iron status of a representative population sample in a district of Paris area (France) was assessed using a biochemical and dietary approach. Complete data were obtained for 1,108 subjects 6 months to 97 years old. Total iron intake increased up to adolescence and then remained stable in adult life. Iron intake was higher in men than in women. Most children and menstruating women presented a dietary iron intake below the recommended allowances. While anemia was not very common, iron deficiency (defined as the existence of at least two abnormal values in the four independent indicators of iron status: serum ferritin, erythrocyte protoporphyrin, transferrin saturation and MCV) was particularly common in infants, young children, menstruating women and elderly men. Serum ferritin, erythrocyte protoporphyrin and transferrin saturation were significantly correlated with inflammatory markers. Significant correlations were found between dietary total iron and serum ferritin (r = 0.29, p < 0.001) and hemoglobin (r = 0.44, p < 0.001). After adjustment for age, sex and inflammation, using multiple linear regression models, the relationship between both heme and nonheme iron intake and serum ferritin remained significant. Serum ferritin and hemoglobin levels were negatively correlated with calcium and phosphorus intake.
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PMID:Iron status of a healthy French population: factors determining biochemical markers. 783 79

In 14 of 23 patients seen with coeliac disease thrombocytosis was present (range: 420,000 to 789,000 platelets per cubic mm) and was unrelated to iron deficiency or inflammatory syndrome. Among patients with thrombocytosis (group I), 6 had an associated autoimmune disease; this association was absent in patients without thrombocytosis (group II). There was no correlation between thrombocytosis and lymphocyte count, plasma IgA, IgG, IgM and fibrinogen levels, presence of HLA B8 antigen or histological stage. On the other hand, group I patients had a lower plasma level of albumin, phosphorus and folates. We conclude that thrombocytosis is useful in the assessment of patients with coeliac disease and reflects an enhanced activity of the disease. Moreover, the presence of thrombocytes in these patients' blood may indicate a major risk of associated autoimmune disease.
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PMID:[Thrombocytosis of celiac disease in adults: a diagnostic and prognostic marker?]. 824 65

One objective of this clinical trial was to determine whether calcium and phosphorus supplementation of infant formula affects the iron status of healthy full-term infants. One hundred three infants were randomly assigned to receive iron-fortified, cow milk-based infant formula (465 mg Ca and 317 mg P/L) or the same formula with added calcium glycerophosphate (1800 mg Ca and 1390 mg P/L) for 9 mo. Reported calcium intake for supplemented infants was about four times that of control infants, ranging from a mean of 1741 mg/d at baseline to 1563 mg/d at 9 mo. There was no difference by treatment group in mean or median change from baseline of serum ferritin, total-iron-binding capacity, erythrocyte protoporphyrin, or hematocrit at 4 and 9 mo after enrollment. Incidence of iron deficiency was similar for both groups and no infant developed iron deficiency anemia during the trial. This study indicates that the well-documented inhibitory effect of calcium and phosphorus on iron absorption is not clinically important in infants fed iron-fortified infant formula.
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PMID:Calcium and phosphorus supplementation of iron-fortified infant formula: no effect on iron status of healthy full-term infants. 909 73

We studied the effects of iron deficiency on the in vivo absorption (by using the intestinal perfusion technique in the duodenum) of different dietary sources of iron (haem, non-haem and equal parts of both forms) and investigated the interactions between iron and calcium, phosphorous, magnesium, copper and zinc in control and iron-deficient rats. Three perfusion solutions containing a different source of iron were used: solution 1, ferric citrate; solution 2, haemoglobin; solution 3, equal parts of ferric citrate and haemoglobin. We also tested the same perfusion solution with 2,4-dinitrophenol (2,4-DNP), an inhibitor or oxidative phosphorylation (solutions 1-I, 2-I and 3-I). In control rats we observed three mechanisms of iron absorption: passive for soluble iron salts, active receptor-mediated for non-haem iron complexes, and active receptor-mediated for haem iron. In anaemic rats iron absorption was greater than in controls, except after perfusion with solution 2 (containing haemoglobin). Absorption increased as a result of both the passive and active, receptor-mediated mechanism for non-haem iron complexes. The active component was influenced by the depletion of haem receptors under severe iron deficiency. The absorption of calcium, copper and zinc in iron-deficient animals was lower than in controls, whereas phosphorus and magnesium absorption were not significantly affected. After perfusion with solution 2 or 3, calcium, copper and zinc absorption were lower than after solution 1. We conclude that ferropoenic anaemia in the rat impairs the absorptive process of those minerals that are absorbed, at the duodenal level mainly via active transport (haem iron, calcium, copper and zinc), but does not affect the active component involved in non-haem iron absorption.
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PMID:Effect of source of iron on duodenal absorption of iron, calcium, phosphorous, magnesium, copper and zinc in rats with ferropoenic anaemia. 912 53


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