European journal of clinical nutrition · 1999
The impact of malarial infection and diet on the anaemia status of rural pregnant Malawian women.
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Huddle J M, Gibson R S, Cullinan T R
Аннотация
OBJECTIVE: To investigate haematological and biochemical iron indices in relation to malaria, gravida, and dietary iron status in rural pregnant Malawian women.
DESIGN: In this self-selected sample, haemoglobin, haematocrit, red cell indices, serum ferritin, serum iron, serum transferrin, and serum transferrin receptor (TfR) were measured. Infection was assessed by a malaria slide, serum C-reactive protein, and white blood cell count. Dietary iron variables were measured by three 24-h interactive recalls.
SETTING AND SUBJECTS: 152 rural pregnant women recruited at 24 weeks gestation while attending a rural antenatal clinic in Southern Malawi; 36% were primagravid; 43% were gravida 2-4; 26% were gravida >5.
RESULTS: Of the women, 69% (n=105) were anaemic (haemoglobin <110 g/l); 37% (n=39) had anaemia and malarial parasitaemia on the test day; 17% (n=26) with malaria were also classified with iron deficiency (ID) anaemia (based on serum ferritin < or = 50 microg/l and Hb <110 g/l) while an additional seven with malaria were classified with ID without anaemia. In malarial-free subjects, 32% were classified with IDA (serum ferritin <12 microg/l and Hb <110 g/l) and 17% with ID (serum ferritin <12 microg/l; Hb > or = 110 g/l). Serum TfR concentrations were elevated in anaemic women (P<0.01). In non-malarial parasitaemic subjects, serum TfR correlated negatively with haemoglobin (r=-0.313; P<0.001) but not serum ferritin. Of the women, 49% were at risk for inadequate iron intakes. Most dietary iron was non-haem; plant foods provided 89%; flesh foods (mainly fish) only 9%. Malarial parasitaemia and intakes of available iron impacted significantly on iron status.
CONCLUSION: Anaemia prevalence from all causes was high (that is, 69%); three factors were implicated: malaria, and deficiencies of iron and possibly folate, induced partly by an inadequate dietary supply and/or secondary to malarial parasitaemia.
SPONSORSHIP: International Development Research Centre (IDRC) of Canada. Opportunities for Micronutrient Interventions (OMNI) Project. Natural Sciences and Engineering Research Council of Canada.
DESIGN: In this self-selected sample, haemoglobin, haematocrit, red cell indices, serum ferritin, serum iron, serum transferrin, and serum transferrin receptor (TfR) were measured. Infection was assessed by a malaria slide, serum C-reactive protein, and white blood cell count. Dietary iron variables were measured by three 24-h interactive recalls.
SETTING AND SUBJECTS: 152 rural pregnant women recruited at 24 weeks gestation while attending a rural antenatal clinic in Southern Malawi; 36% were primagravid; 43% were gravida 2-4; 26% were gravida >5.
RESULTS: Of the women, 69% (n=105) were anaemic (haemoglobin <110 g/l); 37% (n=39) had anaemia and malarial parasitaemia on the test day; 17% (n=26) with malaria were also classified with iron deficiency (ID) anaemia (based on serum ferritin < or = 50 microg/l and Hb <110 g/l) while an additional seven with malaria were classified with ID without anaemia. In malarial-free subjects, 32% were classified with IDA (serum ferritin <12 microg/l and Hb <110 g/l) and 17% with ID (serum ferritin <12 microg/l; Hb > or = 110 g/l). Serum TfR concentrations were elevated in anaemic women (P<0.01). In non-malarial parasitaemic subjects, serum TfR correlated negatively with haemoglobin (r=-0.313; P<0.001) but not serum ferritin. Of the women, 49% were at risk for inadequate iron intakes. Most dietary iron was non-haem; plant foods provided 89%; flesh foods (mainly fish) only 9%. Malarial parasitaemia and intakes of available iron impacted significantly on iron status.
CONCLUSION: Anaemia prevalence from all causes was high (that is, 69%); three factors were implicated: malaria, and deficiencies of iron and possibly folate, induced partly by an inadequate dietary supply and/or secondary to malarial parasitaemia.
SPONSORSHIP: International Development Research Centre (IDRC) of Canada. Opportunities for Micronutrient Interventions (OMNI) Project. Natural Sciences and Engineering Research Council of Canada.