scholarly journals Mechanisms of Hemolysis in Iron Deficiency Anemia. Further Studies

Blood ◽  
1968 ◽  
Vol 32 (6) ◽  
pp. 884-894 ◽  
Author(s):  
MARIA DIEZ-EWALD ◽  
MIGUEL LAYRISSE ◽  
Adelina Ojeda
Keyword(s):  
Iron Deficiency ◽  
Cell Survival ◽  
Iron Deficiency Anemia ◽  
Red Cells ◽  
Deficiency Anemia ◽  
Intrinsic Defect ◽  
Red Cell ◽  
Cell Parameters ◽  
Survival Studies ◽  
Hook Worm

Abstract Red blood cell survival time as measured with 32DFP and 51Cr was studied in subjects with iron deficiency anemia associated and nonassociated with hook-worm infection. 51Cr T ½ was definitely shorter in all cases in which 32DFP showed marked excess hemolysis, but a normal 51Cr T ½ was found in some cases in which 32DFP survival was slightly reduced. There was a high correlation between survival measured with 32DFP and the rate of abnormal red cells in the peripheral blood. Less correlation was found between the proportion of hypochromic microcytic red cells and 32DFP, and even less correlation, although significant, was observed when 51Cr T ½ was compared with the red cell parameters. Results of the red cell survival studies with erythrocytes from subjects with iron deficiency anemia injected into the donor subject, normal recipients, and splenectomized subjects, as well as body 51Cr surface countings, indicated that excess hemolysis in this type of anemia is due to an intrinsic defect of the red blood cells and that the spleen is the principal sites of destruction of these cells.

scholarly journals Excess Hemolysis in Subjects with Severe Iron Deficiency Anemia Associated and Nonassociated with Hookworm Infection

Blood ◽  
1965 ◽  
Vol 25 (1) ◽  
pp. 73-91 ◽  
Author(s):  
MIGUEL LAYRISSE ◽  
JESÚS LINARES ◽  
MARCEL ROCHE ◽  
Adelina Ojeda ◽  
Alvaro Carstens ◽  
...  
Keyword(s):  
Iron Deficiency ◽  
Cell Survival ◽  
Iron Deficiency Anemia ◽  
Red Cells ◽  
Deficiency Anemia ◽  
Intrinsic Defect ◽  
Red Cell ◽  
Hookworm Infection ◽  
Iron Treatment ◽  
Red Cell Survival

Abstract An excess hemolysis was found in subjects with iron deficiency anemia associated with hookworm infection. Red cell survival, measured with Cr51 and DFP32 in the subjects before deworming, showed a marked disproportion between the decrease of the survival and the amount of daily intestinal blood loss in most cases. Excess of hemolysis was still present after more than 90 per cent of the parasites were removed. Red cell survival became normal after correction of anemia through iron treatment. Excess of hemolysis was also present in noninfected subjects with iron deficiency anemia due to other causes. The reduction in the survival of the erythrocytes from infected subjects transfused into normal recipients shows that the hemolytic process is due to an intrinsic defect of the red cells. The low values of hemoglobinemia and the presence of haptoglobins in the plasma indicate that hemoglobin has not been liberated in excess intravascularly. Finally, the fact that the red cells from an infected patient taken after deworming survived normally in splenectomized recipients indicates that the spleen is probably the principal site of the red cell destruction. The clinical and autopsy findings suggest that splenic function is not pathologically increased, but rather that this organ is acting physiologically at a more rapid rate, "culling" the abnormal circulating red cells and thus leading to a decrease in red cell survival. The studies presented here also indicate that the hookworm infection per se does not induce hemolysis.

scholarly journals PACKED RED CELL DENGAN DELTA Hb DAN JUMLAH ERITROSIT ANEMIA PENYAKIT KRONIS (Packed Red Cells with Delta Hb and Erythrocytes in Anemia of Chronic Disease)

2018 ◽  
Vol 21 (3) ◽  
pp. 220
Author(s):  
Novita Indayanie ◽  
Banundari Rachmawati
Keyword(s):  
Chronic Disease ◽  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Strong Correlation ◽  
Red Cells ◽  
Deficiency Anemia ◽  
Red Cell ◽  
Anemia Of Chronic Disease ◽  
Common Cause ◽  
The Mean

Anemia chronic disease is the second common cause after iron deficiency anemia with hemoglobin levels below the referencevalue. The pathogenesis of anemia should be determined for treatment. Hematinics and or erythropoietin are other treatments besidestransfusion. The transfusion is started when Hb≤7g/dL. The PRC transfusion of 4ml/kg could increase Hb level by 1 g/dL, or 1 unit andcould increase 3–5% of hematocrit. The objective of this study was to know the correlation of PRC unit with delta Hb and erythrocytesin anemia of chronic disease. The 60 samples examined were from patients of the Kariadi Hospital Semarang suffering from anemia ofchronic disease and who were transfused with PRC from January up to March 2014. The study subjects comprised 28 men (46.7%) and32 women (53.3%), with a mean age of 47 years. The number of PRC given was between one (1) to four (4) units. The mean delta Hbwas 3.48 and the mean delta erythrocytes was about 1.03 (0.1 to 2.3). There was a significant correlation between PRC units and deltaHb (r:0.856, p:0.000), as well as delta erythrocytes (r:0.716, p:0.000). Based on this study, it can be concluded that PRC units have avery strong correlation with delta Hb and as well as with delta erythrocytes in patients suffering from anemia of chronic disease

scholarly journals Radioactive Iron Studies in Patients with Iron Deficiency Anemia with Concurrent Abnormal Hemolysis

Blood ◽  
1960 ◽  
Vol 15 (5) ◽  
pp. 791-806 ◽  
Author(s):  
M. C. VERLOOP ◽  
M. VAN DER WOLK ◽  
A. J. HEIER
Keyword(s):  
Iron Deficiency ◽  
Life Span ◽  
Iron Deficiency Anemia ◽  
Iron Concentration ◽  
Red Cells ◽  
Iron Therapy ◽  
Deficiency Anemia ◽  
Red Cell ◽  
Insufficient Response ◽  
Cell Breakdown

Abstract A report is presented on two women suffering from severe iron deficiency anemia, concomitant with abnormal hemolysis. The life span of the patients’ red cells was shortened; transfused normal red cells were more rapidly broken down. Extracorpuscular factors seem to be responsible for the pathologic hemolysis. There was no pathologic sequestration of red cells labeled with Cr51 in the spleen. After incorporation of radioactive iron into the red cells, the utilization percentage of Fe59 under iron therapy fell to about 15 per cent within a few weeks. This, too, indicates that the pathologic hemolysis was to be ascribed to extracorpuscular factors. The Fe59 was apparently not sufficiently reutilized. The constantly decreased serum iron concentration might also indicate a disturbance in the reutilization of iron liberated during red cell breakdown. Six other patients with less severe iron deficiency anemia and an insufficient response to iron therapy were examined in addition. In 5 of these patients, the life span of red cells labeled with radioactive chromium was found shorter than normal. An insufficient response to iron therapy in patients with chronic iron deficiency anemia may be ascribable, in some instances, to concomitant pathologic hemolysis.

scholarly journals Red Cell Distribution Width (RDW) and Hb% in the Detection of Iron Deficiency Anemia in Pregnant Women

2018 ◽  
Vol 9 (2) ◽  
pp. 137-141
Author(s):  
Gazi Sharmin Sultana ◽  
Syed Aminul Haque ◽  
Ayatunnesa ◽  
Md MA Muttalib ◽  
Md Quddusur Rahman
Keyword(s):  
Iron Deficiency ◽  
Pregnant Women ◽  
Iron Deficiency Anemia ◽  
Red Cell Distribution Width ◽  
Deficiency Anemia ◽  
Red Cell ◽  
Cell Distribution ◽  
Distribution Width ◽  
Latent Iron Deficiency ◽  
Automated Hematology Analyzer

Background: Detection of iron deficiency early during pregnancy is essential for correct management. Red cell distribution width (RDW) is a new routine parameter in fully automated hematology analyzer that can give the idea of early iron deficiency before Hb%. This study was aimed to see the role of red cell distribution width and Hb% in determining early iron deficiency in pregnant women.Methods: In this study 190 pregnant women were included. CBC including Hb% and RDW and iron profile were done. RDW were compared with Hb% in various stages of iron deficiency.Results: RDW was more significant than Hb level in latent iron deficiency when Hb level was normal (p<0.05). In mild and moderate iron deficiency anemia, RDW was increased progressively though Hb level was reduced. In this study RDW had sensitivity 82.3% and specificity 97.4%. Whereas Hb level had sensitivity 56.6% and specificity 90.9% for iron deficiency.Conclusion: Latent iron deficiency without other complicating disease could be screened out early by increased RDW when Hb% was normal.Anwer Khan Modern Medical College Journal Vol. 9, No. 2: Jul 2018, P 137-141

Chromium51 Red Cell Half-Life in Severe Iron Deficiency Anemia *

1965 ◽  
Vol 14 (4) ◽  
pp. 605-609 ◽  
Author(s):  
Z. Farid ◽  
A. R. Schulert ◽  
S. Bassily ◽  
J. H. Nichols
Keyword(s):  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Half Life ◽  
Deficiency Anemia ◽  
Red Cell

scholarly journals Role of red cell distribution width (RDW) in the detection of iron deficiency anaemia in pregnancy within the first 20 weeks of gestation

1970 ◽  
Vol 37 (3) ◽  
pp. 102-105 ◽  
Author(s):  
GS Sultana ◽  
SA Haque ◽  
T Sultana ◽  
Q Rahman ◽  
ANN Ahmed
Keyword(s):  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Red Cell Distribution Width ◽  
Deficiency Anemia ◽  
Mean Corpuscular Hemoglobin ◽  
Red Cell ◽  
Cell Distribution ◽  
Corpuscular Hemoglobin ◽  
Distribution Width ◽  
Iron Deficient

Iron deficiency anemia is common problem during pregnancy. Red cell size variation (anisocytosis) is the earliest morphologic changes in iron deficiency anemia. Red cell distribution width is a quantitative measure of red cell size variation and it can give the idea of early iron deficiency before other test to become positive.190 pregnant women were included in this study. Red cell distribution width was compared between iron deficient & non-iron deficient pregnant women. Red cell distribution width also compared with Hb level, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration and peripheral blood film in prelatent iron deficiency, latent iron deficiency, mild and moderate iron deficiency anemia. Red cell distribution width had sensitivity 82.3% and specificity 97.4%. Whereas Hb level, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration and peripheral blood film all had 56.6%, 29.2%, 68.1%, 15% and 38.9% sensitivity but specificity was 90.9%, 98.7%, 83.1%, 96.1% and 98.7% in the detection of iron deficiency. Red cell distribution width appears to be a reliable and useful parameter for detection of iron deficiency during pregnancy. DOI: http://dx.doi.org/10.3329/bmrcb.v37i3.9122 BMRCB 2011; 37(3): 102-105

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