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Pediatr Res. 1997 Oct;42(4):509-13.

Prostanoid formation during feeding of a preterm formula with long-chain polyunsaturated fatty acids in healthy preterm infants during the first weeks of life.

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Department of Pediatrics, Philipps University Marburg, Germany.


The objective of this study was to evaluate the effect of conventional and long-chain polyunsaturated fatty acids (LCP)-enriched preterm formula on prostanoid formation in preterm infants during their first weeks of life. In a prospective, randomized, double-blind study, healthy infants received either formula enriched with LCP (n = 10), standard preterm formula (n = 10), or (expressed) breast milk (n = 10). Urine was sampled, and anthropometric measurements were taken at study entry and after the study period of 3 wk. In vivo formation of prostaglandin E2, thromboxane A2, and prostacyclin was evaluated by measuring the urinary excretion of the respective index metabolities by gas chromatography-mass spectrometry. There were no significant differences in urinary prostanoid excretion and anthropometric data between the groups at the end of the study period. We conclude that neither conventional formula nor supplementation of a preterm formula with LCP for a period of 3 wk substantially influence prostanoid formation in healthy preterm infants.

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