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Published on: October 1, 2013
Essential fatty acid composition and correlates in children with severe acute malnutrition
Esther Babirekere-Iriso1, Lotte Lauritzen2, Charlotte Gylling Mortensen2
1Mwanamugimu Nutrition Unit, Department of Paediatrics, Mulago Hospital, Kampala, Uganda; Department of Nutrition, Exercise and Sports, University of Copenhagen, Faculty of Science, Copenhagen, Denmark.
Insights
Children with severe acute malnutrition (SAM) have lower levels of polyunsaturated fatty acids (PUFA). Low hemoglobin and HIV infection further decrease PUFA levels, highlighting the need for increased PUFA intake during nutritional rehabilitation.
Area of Science:
- Nutritional Biochemistry
- Pediatric Health
- Public Health in Low-Income Countries
Background:
- Severe acute malnutrition (SAM) is prevalent in low-income nations.
- SAM is often linked to diminished blood levels of polyunsaturated fatty acids (PUFA).
Purpose of the Study:
- To analyze whole blood fatty acid composition in children with SAM.
- To identify factors associated with PUFA levels in these children.
Main Methods:
- A cross-sectional study compared children with SAM to healthy controls.
- Whole blood fatty acid profiles were measured.
- Correlations with clinical data (hemoglobin, HIV status) were analyzed using multiple linear regression.
Main Results:
- Children with SAM exhibited lower proportions of saturated fatty acids and higher monounsaturated fatty acids.
- Total n-6 PUFA (including linoleic acid and arachidonic acid) and total n-3 PUFA (including docosahexaenoic acid) were reduced in SAM.
- Lower hemoglobin and HIV infection were associated with decreased long-chain PUFA (LCPUFA) levels.
Conclusions:
- Children with SAM show reduced blood LCPUFA levels.
- Factors like HIV infection and low hemoglobin contribute to lower LCPUFA, potentially due to reduced blood cell counts.
- Nutrition interventions for SAM must prioritize adequate PUFA intake.
Background:
Severe acute malnutrition (SAM) is a common condition in children living in low-income countries and may be associated with reduced polyunsaturated fatty acids (PUFA) blood levels. The purpose of this study was to describe whole blood fatty acid composition and correlates of PUFA in children admitted with SAM.
Methods:
We conducted a cross-sectional study among children admitted with SAM at Mulago National Referral Hospital and healthy controls. Whole blood fatty acid composition was measured and correlated with clinical data such as oedema, levels of haemoglobin, C-reactive protein and HIV-infection status. Multiple linear regression analyses were used to identify correlates of PUFA.
Results:
The relative contribution of saturated fatty acid to the fatty acids in whole blood (FA%) were lower in 108 children with SAM compared to 24 well-nourished controls whereas most monounsaturated fatty acids were higher in children with SAM. Total and all n-6 PUFA including linoleic (18:2n-6, LA) and arachidonic acid (20:4n-6, AA), as well as total n-3 PUFA and docosahexaenoic acid (22:6n-3, DHA) were lower in children with SAM. The n-6:n-3 PUFA ratio was also lower in the children with SAM. Haemoglobin was a positive correlate of AA, n-3 docosapentaenoic acid (22:5n-3, n-3 DPA), DHA, total n-6 long chain (LC) PUFA and total n-3 LCPUFA. HIV infected children had 0.87 (0.47; 1.58) %-points less n-6 LCPUFA and 0.61 (0.03; 1.19) %-points less AA than the un-infected children.
Conclusion:
Children with SAM presented with lower FA% of LCPUFA. HIV infection and low haemoglobin were also associated with lower FA% of LCPUFA, which may be related to lower numbers of blood cells. Nutrition rehabilitation interventions need to pay more attention to the intake of PUFA.
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