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Updated: Jul 14, 2026

Modifying Levels of Maternal Dietary Folic Acid or Choline to Study the Impact of Deficiencies on Offspring Health Outcomes
Published on: June 28, 2024
Endothelial function in newborn infants is related to folate levels and birth weight
Helena Martin1, Bo Lindblad, Mikael Norman
1Department of Woman and Child Health, Karolinska Institute, Stockholm, Sweden. helena.martin@ki.se
Insights
Maternal folate levels impact infant vascular endothelial function. Lower maternal folate is linked to poorer endothelial function in newborns, highlighting folate
Area of Science:
- Perinatal medicine
- Cardiovascular research
- Nutritional science
Background:
- Low maternal folate during pregnancy is linked to low birth weight.
- Low birth weight is a risk factor for adult cardiovascular disease.
- Vascular endothelial function is crucial in early cardiovascular disease development.
Purpose of the Study:
- To investigate the relationship between red blood cell folate levels, birth weight, and vascular endothelial function in newborns.
- To determine if maternal folate status influences infant endothelial function.
Main Methods:
- Studied 82 infants (30 low birth weight) and their mothers.
- Measured skin perfusion using laser Doppler during acetylcholine iontophoresis.
- Assessed red blood cell folate, vitamin B12, and homocysteine levels.
Main Results:
- Low birth weight infants had significantly lower acetylcholine-induced skin perfusion than controls.
- Neonatal acetylcholine response correlated with red blood cell folate in infants and mothers.
- Mothers of low birth weight infants had lower folate levels than mothers of control infants.
- Low birth weight and red blood cell folate independently predicted endothelial function in infants.
Conclusions:
- This study provides the first evidence linking folate levels to vascular endothelial function in newborn infants.
- Maternal folate status appears to play a role in neonatal endothelial health, independent of infant folate levels.
Objective:
Low maternal folate levels during pregnancy correlate with low birth weight, a perinatal risk factor for later cardiovascular disease. We studied relationships between red blood cell folate levels, birth weight, and vascular endothelial function (a key factor in the early pathophysiologic processes of heart disease) in newborn infants.
Methods:
We included 82 infants (30 low birth weight) and their mothers. A laser Doppler technique was used to measure skin perfusion during transdermal iontophoresis of acetylcholine (an endothelium-dependent vasodilator). Red blood cell folate, vitamin B12, and homocysteine levels were determined.
Results:
The perfusion response to acetylcholine was lower in low birth weight infants than in normal birth weight control subjects (mean: 35 vs 76 perfusion units). The neonatal acetylcholine response correlated with red blood cell folate levels in both infants and their mothers. The folate levels of low birth weight and control infants did not differ significantly (mean: 1603 vs 1795 nmol/L), but mothers of low birth weight infants had lower folate levels than did mothers of control infants (mean: 805 vs 1109 nmol/L). In multivariate analysis, low birth weight and red blood cell folate levels contributed independently to endothelial function in newborn infants. The levels of vitamin B12 and homocysteine were similar in the 2 groups and did not correlate with endothelial function.
Conclusion:
The data presented here provide the first evidence for a relationship between folate levels and vascular endothelial function in newborn infants.
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