Prenatal maternal selenium plasma concentration and motor development in early infancy

Area of Science:

• Nutritional Neuroscience
• Developmental Pediatrics
• Public Health Nutrition

Background:

• Selenium (Se) is a vital micronutrient for brain development.
• Limited research exists on prenatal maternal Se and infant motor development.
• A previous study indicated 36% of pregnant Nepalese women had low Se levels.

Purpose of the Study:

• To investigate the association between maternal plasma Se concentration and infant motor development.
• To assess motor performance at 8-12 weeks of age in relation to maternal Se status.
• To inform potential nutritional interventions during pregnancy.

Main Methods:

• Cohort study of 711 Nepalese mother-infant pairs.
• Maternal plasma Se measured using inductively coupled plasma mass spectrometry.
• Infant motor development assessed with the Test of Infant Motor Performance (TIMP).

Main Results:

• No significant association was found between maternal Se concentration and infant TIMP scores.
• The coefficient for the total TIMP score was -0.035 (95% CI: -0.105, 0.036).
• This indicates maternal Se status does not influence early motor development in this cohort.

Conclusions:

• Despite a high prevalence of low maternal Se levels, no link to infant motor development was observed.
• Findings do not support Se supplementation during pregnancy solely for enhancing early infant motor skills.
• Selenium's essential role in other maternal and infant health aspects warrants further investigation.