Fatty acids and neurodevelopment
J Belkind-Gerson1, A Carreón-Rodríguez, C O Contreras-Ochoa
1Instituto Nacional de Salud Publica (National Institute of Public Health), Centro de Investigacion en Salud Poblacional, Mexico.
Insights
Docosahexaenoic acid (DHA) and arachidonic acid (AA) are crucial for infant brain development. Studies show DHA and AA supplementation in infant formulas may enhance visual and cognitive development.
Area of Science:
- Neuroscience
- Nutritional Science
- Biochemistry
Background:
- Long-chain polyunsaturated fatty acids (LCPUFAs), including docosahexaenoic acid (DHA) and arachidonic acid (AA), are vital for neurodevelopment.
- These fatty acids are concentrated in the brain during early development and found in breast milk.
- LCPUFA deficiency is linked to neurodevelopmental disorders, highlighting their importance.
Purpose of the Study:
- To review the role of fatty acids in neurodevelopment.
- To summarize findings from clinical trials on infant formulas supplemented with DHA and/or AA.
- To assess the impact of these fatty acids on visual and cognitive development.
Main Methods:
- Review of existing literature and randomized clinical trials.
- Analysis of studies investigating the effects of DHA and AA supplementation in infant formulas.
- Focus on the physiological roles of esterified and non-esterified polyunsaturated fatty acids.
Main Results:
- DHA and AA are rapidly incorporated into the brain during the first year of life.
- Supplementation of infant formulas with DHA or DHA and AA has been studied for its effects on development.
- Evidence suggests a physiological importance of DHA in visual and neural systems.
Conclusions:
- Docosahexaenoic acid (DHA) and arachidonic acid (AA) play critical roles in neurodevelopment.
- Further research and clinical trials are evaluating the benefits of supplemented infant formulas.
- Understanding fatty acid metabolism and function is key to optimizing infant neurodevelopment.
Abstract:
Knowledge of the importance of docosahexaenoic acid (DHA), arachidonic acid (AA), and long-chain polyunsaturated fatty acids (LCPUFAs) in neurodevelopment was originally obtained from animal studies. These fatty acids are rapidly accreted in brain during the first postnatal year in animal and human infants, and they are found in high concentrations in breast milk. Reports of enhanced intellectual development in breast-fed children, and reports linking LCPUFA deficiency with neurodevelopmental disorders have stressed the physiological importance of DHA in visual and neural systems. In addition to high concentrations of fatty acids in breast milk, they are also present in fish and algae oil and have recently been added to infant formulas. Esterified poplyunsaturated fatty acids act in cellular membranes, in signal transduction, in neurotransmission, and in the formation of lipid rafts. Nonesterified polyunsaturated fatty acids can modulate gene expression and ion channel activities, thus becoming neuroprotective agents. The conversion of linoleic acid and alpha-linolenic acid into ARA and DHA have led to randomized clinical trials that have studied whether infant formulas supplemented with DHA or both DHA and ARA would enhance visual and cognitive development. This review gives an overview of fatty acids and neurodevelopment, focusing on the findings from these studies.
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