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Query: UMLS:C0002871 (anemia)
 52,094 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Iron deficiency is a major complication of regular blood donation as a result of regular iron loss from each donated blood unit. Ninety-two regular blood donors and 95 first time blood donors attending a hospital-based blood transfusion centre were assessed as to their haematological and iron status by blood counts and serum ferritin levels as an indicator of iron stores. All donors had passed the haemoglobin-screening test using a copper sulphate method prior to blood donation. Ferritin levels were found to be significantly lower among regular blood donors (47.8 mmol/L) as compared to first time blood donors (94.2 mmol/L). Iron deficiency as observed by low ferritin levels was seen in 7.4% of all first time donors as compared to 17.4% in regular donors. Male first time donors showed a low prevalence of iron deficiency but the prevalence significantly increased with regular blood donation. Female first time and regular blood donors however did not show any significant differences in prevalence of iron deficiency, with both groups exhibiting prevalence rates similar to male regular donors. The association between haemoglobin levels and iron deficiency was poor and the copper sulphate-screening test was found insensitive to anaemia with many donors passing the test and donating blood despite being anaemic. It is concluded that a high prevalence of iron deficiency is present among regular male blood donors and all female donors. Besides, the use of the copper sulphate screening test as a sole criterion for anaemia screening should be reviewed. Ferritin measurements should be included in the routine assessment of blood donors especially among regular blood donors.
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PMID:Anaemia and iron status among blood donors in a blood transfusion unit in Malaysia. 1619 72

A randomized, double-blind, placebo-controlled trial was performed to assess the efficacy of different micronutrient supplementation regimes for improving micronutrient status, preventing anemia, and growth faltering of Vietnamese infants. A population-based sample of 306 infants aged 6-12 mo, split in 4 treatment groups, received daily multiple micronutrient (DMM), daily placebo (P), weekly multiple micronutrient (WMM), or daily iron (DI) supplements for 6 mo, 7 d/wk, under supervision. Weight and length were measured monthly, and anemia and plasma levels of ferritin, zinc, riboflavin, retinol, tocopherol, and homocysteine were determined before and after the supplementation. Z-scores for length-for-age and weight-for-age worsened significantly in all groups, but the length-for-age Z-score decreased significantly less in the DMM group (-0.32 +/- 0.05) than in the P and WMM groups (-0.49 +/- 0.05 and -0.51 +/- 0.05, respectively, P = 0.001). Hemoglobin levels increased significantly more in the DMM group [mean (95%CI): 16.4 g/L (12.4-20.4)] than in the P group [8.6 g/L (5.0-12.2), P = 0.04), with intermediate nonsignificant increases in the WMM [15.0 g/L (11.5-18.5)] and the DI [12.9 g/L (8.4-17.3)] groups. Ferritin changes were significantly greater in DMM (12.1 microg/L) and DI (9.5 microg/L) than in P (-14.7 microg/L) and WMM groups (-9.7 microg/L). Of the other micronutrients, only tocopherol showed a significantly greater level in the DMM group compared with P. Anemia still affected a quarter and zinc deficiency affected a third of infants although there was no iron deficiency after 6 mo of supplementation with DMM, suggesting that multiple factors are causing anemia and that the dose of zinc is too small.
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PMID:Multiple micronutrient supplementation improves anemia, micronutrient nutrient status, and growth of Vietnamese infants: double-blind, randomized, placebo-controlled trial. 1573 11

Together with serum ferritin, erythrocyte ferritincan be a valuable diagnostic tool for evaluating the degree of impaired iron metabolism in different diseases. We collected peripheral blood samples from 64 subjects (22 healthy volunteers, 20 patients with hereditary hemochromatosis, and 22 patients on regular hemodialysis with secondary anemia) to evaluate whether an immunoenzymatic method generally used for serum ferritin can also be used to determine erythrocyte ferritin levels under various conditions of body iron status. Serum and erythrocyte ferritin levels were assayed in parallel using a microparticle enzyme immunoassay (MEIA) IMx-Ferritin kit and an IMx analyzer. The inter-assay imprecision of the serum and erythrocyte ferritin assays was 4.9% and 5.05%, the intra-assay imprecision was 2.2% and 2.3%, and the mean recovery was 102% (range 96-105%) and 101% (range 99-105%), respectively. Both serum and erythrocyte ferritin assays showed a detection limit of 1 microg/L and good linearity (R(2) = 0.99) in the intervals 13.9-443 and 3.9-135.6 microg/L, respectively. Our findings demonstrate that the IMx-Ferritin assay currently used to measure serum ferritin levels can also be adopted to measure erythrocyte ferritin insofar as it clearly discriminates high and low erythrocyte ferritin levels in cases of both iron overload and deficiency.
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PMID:Erythrocyte ferritin concentration: analytical performance of the immunoenzymatic IMx-Ferritin (Abbott) assay. 1589 63

Iron deficiency is highly frequent among adolescents. Its early detection can prevent the development of a ferropenic anemia, a serious condition. The problem has not been well studied in our country. The purpose of this work was to determine the frequency of iron deficiency and anemia in adolescents. The criteria considered were: hematocrit below 38%, b) saturation transferrin below 16%, c) ferritin below 15 ng/ml. The study was carried out in 2265 schoolchildren, 12 years old, of both sexes, in urban and periurban areas in the city of San Salvador de Jujuy (1250 a.s.l.). The following parameters were measured: hematocrit as well as serum iron and total iron binding capacity, both by colorimetric method. Ferritin was measured by ELISA. Anemia was not found. Iron deficiency as estimated by the iron functional component, was found in 25% of girls and 21% of boys and, through iron stores, in 28% of girls and 18% of boys. Iron deficiency stores in both sexes is the more relevant alteration, indicating that the population sample here studied constitutes a highly vulnerable group. The early detection of iron deficiency will help physical and intellectual development so that adequate sanitary policies are necessary for its prevention.
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PMID:[Prevalence of anemia and iron deficiency in 12 year old school children from Jujuy]. 1607 6

The aims of this study were to diagnose iron-restricted erythropoiesis (functional iron deficiency) in patients with classic iron deficiency (ID), anemia of chronic disease (ACD) and the combined state of ID/ACD with the use of two hematological methods for the measurement of reticulocyte hemoglobinization. In comparison, the biochemical markers of iron status were determined. We studied 474 anemic patients admitted to hospital with a broad spectrum of diseases. We measured indicators of reticulocyte hemoglobinization. CHr was determined on an Advia 120 hematology analyzer. A Sysmex XE-2100 hematology analyzer was used to determine RET-Y, the forward scatter of fluorescence-labeled reticulocytes, which can also be expressed as the reticulocyte hemoglobin equivalent (RET-H(e)), as well as RBC-Y, the forward scatter of fluorescence-labeled erythrocytes, which can be expressed as the erythrocyte hemoglobin equivalent. Ferritin, soluble transferrin receptor (sTfR) and the sTfR/log ferritin ratio (sTfR-F index) were used as biochemical markers. The comparison of RET-Y with CHr demonstrated an excellent curvilinear relationship between the two parameters. The normal reference range for Ret-Y was 1630-1860 arbitrary units (AU); mathematical transformation to RET-H(e) gave a range of 28.2-35.7 pg. Correlations of biochemical iron markers with RET-H(e) were as weak as with CHr in patients with ACD and acute phase response. In a diagnostic plot to identify iron status, RET-H(e) could replace CHr without any loss of sensitivity or specificity. Patient mismatch analysis between RET-H(e) and CHr in the diagnostic plot demonstrated agreement for 449 of 474 patients (94.4%). Patient specific anemia mismatches were 2.9-6.2%. According to our results, the indicators of reticulocyte hemoglobinization, RET-H(e) and CHr, measure the same phenomenon. RET-H(e) is as valuable as CHr for the diagnosis of iron-restricted erythropoiesis. The combination of RET-H(e) and the sTfR-F index in a diagnostic plot offers an attractive tool for the evaluation of iron status and identification of the progression of ID.
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PMID:Reticulocyte hemoglobin measurement--comparison of two methods in the diagnosis of iron-restricted erythropoiesis. 1623 85

The aim of this study was to determine the prevalence of anemia and evaluate the relationship of malaria and helminth infections on anemia status in Phan Tien village, a mountainous ethnic minority community in southern Vietnam. This longitudinal study was performed from April 1997 to 2000 by measuring the hemoglobin concentration of 2,767 people who participated in six annual surveys at the end of the rainy seasons. Ferritin concentration was measured in 2000 to evaluate the proportion of iron deficiency anemia. The relation between malaria and intestinal helminth infections with anemia was investigated. Anemia was always over 43% and mainly associated with iron deficiency (80.1%). Using generalized estimating equations, a small but significant decline of the anemia prevalence was detected (OR: 0.805; p < 0.0001). Malaria was significantly associated with anemia (OR: 2.408; p = 0.0006). There was no significant effect of the control of intestinal helminth infections on the time course of anemia (95% CI: -0.1548 to 0.1651).
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PMID:Anemia, malaria and hookworm infections in a Vietnamese ethnic minority. 1629 31

Between October 1998 and September 2000, 111 consecutive pregnant patients admitted to the Port Moresby General Hospital antenatal ward with a haemoglobin level of 6 g/dl or less were studied. The main causes of the severe anaemia were as follows: iron deficiency on its own or in combination with another factor 66%--iron deficiency on its own 43% and combined folate and iron deficiency 23%--and folate deficiency 18%. Malaria was a contributory factor in 13 patients (12%). A combination of blood film, bone marrow study, serum assays of ferritin, folate and vitamin B12, and mean corpuscular volume (MCV) was used to determine the cause of the anaemia. Ferritin levels on their own poorly correlated with the presence of iron in the bone marrow. A low MCV correlated well with iron deficiency anaemia while a high MCV was associated with folic acid deficiency. It would seem therefore that while a bone marrow study is mandatory to reach a definitive diagnosis of severe anaemia, MCV, in conjunction with the red cell morphology on blood film, would be a good marker for iron and folic acid deficiency anaemia, especially as we do not have serum assays readily available for folate, ferritin and vitamin B12 in Papua New Guinea.
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PMID:The aetiology of severe anaemia among antenatal patients of the Port Moresby General Hospital. 1645 96

In Georgia, we were first who tried to study adolescent pregnant women with anemia (age group 14-18ys). We studied the reasons which have caused anemia in the pregnant women of this age. This gave us the opportunity to chose correct methods of treatment and establish that adolescents are at increased risk of anemia, especially at younger ages (14-16 years). We have studied 200 pregnant women, 100 teenagers (study group) and 100 adult women (control group). In both groups we have investigated the level of iron, ferritin, and IL-3 in the blood serum. Iron-deficiency anemia was observed in the first trimester of pregnancy in 35% of pregnant adolescents. Usually the quantity of iron in the body during the first trimester is close to norm, but in our case, age and inadequate food intake in connection with the desire to be slim, play their role. Other clinical manifestations of anemia were not revealed. Iron deficiency anemia found in 22% of the adult group. Number of pregnant women with iron-deficiency anemia was considerably higher in both groups (adolescents and adults) in the third trimester, and quantity of ferritin was at the lower border of the norm. The need of iron usually increases up to 3mg/day in the second trimester and 3.5-4mg/day in the third trimester. In some women Level of IL-3 in the blood was normal (that indicate to the adequate hematopoiesis), serum iron quantity was at the lower border of the norm, Ferritin level was increased and clinical- laboratory indices revealed presence of infection. In our case the number of such patients was 28% among adolescents and 21% among adults. In other cases hematopoiesis was normal (IL-3 level was normal) and there were no signs of infectious disease, but clinical manifestations of anemia were still present which indicated to the presence of physiological anemia due to increased circulatory volume.
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PMID:[Pregnancy and iron, ferritin and IL-3 in the blood]. 1690 3

Hepcidin is a small defensin-like peptide whose production by hepatocytes is modulated in response to anemia, hypoxia, or inflammation. Hepcidin could also act as an indicator of functional iron deficiency in these patients. Cross-sectional study was performed to assess hepcidin correlations with renal function, iron status, and hsCRP in patients with chronic renal failure on conservative treatment, on hemodialyses, and in kidney transplant recipients. Iron status, complete blood count, creatinine, albumin, lipids were assessed using standard laboratory methods. GFR was estimated using MDRD formula. Hepcidin and high sensitivity CRP were measured using commercially available kits. Ferritin and hepcidin were higher in hemodialyzed patients, kidney transplant recipients, and patients with chronic renal failure over controls. In patients with chronic renal failure, hepcidin correlated significantly with total protein, albumin, creatinine, and eGRF. In kidney transplant recipients, hepcidin correlated significantly in univariate analysis, with total protein, ferritin, time after transplantation, creatinine, eGRF and tended to correlate with cholesterol. In hemodialyzed patients hepcidin, correlated significantly with triglycerides, albumin, creatinine, urea, residual renal function, and hsCRP. In healthy volunteers, hepcidin was related to triglycerides and ferritin. Multiple regression analysis in hemodialyzed patients showed that hepcidin was independently related to creatinine, triglycerides, and residual renal function. Multiple regression analysis in kidney transplant recipients showed that hepcidin was independently related only to GFR and ferritin. Elevated hepcidin in all groups of patients studied may be due to low grade inflammation, frequently encountered in this population and mainly to impaired renal function.
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PMID:Hepcidin, iron status, and renal function in chronic renal failure, kidney transplantation, and hemodialysis. 1692 40

Forty five (24 male & 21 female) moderate to severe degree of predialysis CRF patients were prospectively studied over a period of 6 months (July- December, 2004) to see the effect of Recombinant Human Erythropoietin (rHuEpo/EPO) therapy on renal anaemia, progression of renal excretory function & quality of life at 3 and 6 months intervals from the starting of EPO therapy. Mean +/- SD age of the patients was 56 +/- 12 (30-77 yrs) and causes of CRF were Diabetic Nephropathy (DN)=15 (33%), Chronic Glomerulonephritis (CGN) =14(31%), Hypertension (HTN)=11(21%), Chronic Pyelonephritis (CPN)=03 (6.5%) and Obstructive Uropathy (OU)=02 (4.5%). Doses of rHuEpo was 80-100 IU/k week subcutaneously (SC) until the target Hb 11gm% & Hct 30% were achieved; there after the dose was titrated as appropriate. Serum Iron & Ferritin levels were also kept within normal reference level by iron therapy during the study period. Mean +/- SD base line (before starting EPO therapy) level of haemoblobin were 8.4 +/- 0.81(gm%), Hct 27.86 +/- 1.6 (%), blood urea 21.72 +/- 10.5 (mmol/L), S. creatinine 431.93 +/- 228.79 (mmol/L) & Ccr. 21.25 +/- 10 mum respectively. The results showed that significant improvement of haemoglobin level occurred (gm%) from 8.4 +/- 0.81 (gm%) to 9.51 +/- 1.02 (p<0.001) at 3 months and 8.4 +/- 0.81 to 11.10 +/- 1.4, (p<0.001) at 6 months interval. Haematocrit (Hct%) value also significantly increased from 27.86 +/- 1.5 to 30.57 +/- 3.62, (p<0.001) at 3 months and 27.86 +/- 1.5 to 32.81 +/- 3.92 (p<0.001) at 6 months of EPO therapy. Mean blood urea and S. creatinine levels decreased from base line level during the study period but did not show any statistical significance. There was no significant side-effects like uncontrolled hypertension, seizure or hyperviscosity syndrome in any of the study population. The quality of life in terms of improvement of physical ability and sense of well being were also improved in all the study patients. In conclusion, this study showed that the effect of rHuEpo therapy is beneficial for the correction of renal anaemia, can delay the progression of renal failure and improvement of overall quality of life in predialysis CRF patients.
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PMID:Effect rHuEpo on predialysis CRF patients: study of 45 cases. 1696 14


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