Serum tocopherol levels in very preterm infants after a single dose of vitamin E at birth.

Academic Article

Abstract

  • OBJECTIVE: Our aim was to examine the impact of a single enteral dose of vitamin E on serum tocopherol levels. The study was undertaken to see whether a single dose of vitamin E soon after birth can rapidly increase the low α-tocopherol levels seen in very preterm infants. If so, this intervention could be tested as a means of reducing the risk of intracranial hemorrhage. METHODS: Ninety-three infants <27 weeks' gestation and <1000 g were randomly assigned to receive a single dose of vitamin E or placebo by gastric tube within 4 hours of birth. The vitamin E group received 50 IU/kg of vitamin E as dl-α-tocopheryl acetate (Aquasol E). The placebo group received sterile water. Blood samples were taken for measurement of serum tocopherol levels by high-performance liquid chromatography before dosing and 24 hours and 7 days after dosing. RESULTS: Eighty-eight infants received the study drug and were included in the analyses. The α-tocopherol levels were similar between the groups at baseline but higher in the vitamin E group at 24 hours (median 0.63 mg/dL vs. 0.42 mg/dL, P = .003) and 7 days (2.21 mg/dL vs 1.86 mg/dL, P = .04). There were no differences between groups in γ-tocopherol levels. At 24 hours, 30% of vitamin E infants and 62% of placebo infants had α-tocopherol levels <0.5 mg/dL. CONCLUSIONS: A 50-IU/kg dose of vitamin E raised serum α-tocopherol levels, but to consistently achieve α-tocopherol levels >0.5 mg/dL, a higher dose or several doses of vitamin E may be needed.
  • Authors

    Published In

  • Pediatrics  Journal
  • Keywords

  • preterm infants, vitamin E, Biomarkers, Chromatography, High Pressure Liquid, Drug Administration Schedule, Enteral Nutrition, Female, Humans, Infant, Extremely Premature, Infant, Newborn, Infant, Premature, Diseases, Male, Tocopherols, Treatment Outcome, Vitamin E Deficiency, Vitamins, alpha-Tocopherol
  • Digital Object Identifier (doi)

    Pubmed Id

  • 16157075
  • Author List

  • Bell EF; Hansen NI; Brion LP; Ehrenkranz RA; Kennedy KA; Walsh MC; Shankaran S; Acarregui MJ; Johnson KJ; Hale EC
  • Start Page

  • e1626
  • End Page

  • e1633
  • Volume

  • 132
  • Issue

  • 6