53 research outputs found
Protein-turnover in preterm infants by determining the enrichment of n-15 in ammonia - a comparison of tracers
An in Vitro Study of the Effect of Picolinic Acid on Metal Translocation across Lipid Bilayers
15N tracer studies of protein metabolism in low birth weight preterm infants: a comparison of 15N glycine and 15N yeast protein hydrolysate and of human milk- and formula-fed babies
DEMONSTRATION OF THE PRESENCE OF SMALL GTP-BINDING PROTEINS IN CELLS ISOLATED FROM THE RAT JEJUNUM
A study of protein turnover in preterm neonates using 15N enrichment of urinary ammonia
Hydrolysed yeast protein labelled with 15N was used to measure protein turnover, protein synthesis and protein breakdown in preterm infants. The yeast tracer was given as a bolus intragastric dose and protein turnover was determined from the 15N enrichment of urinary ammonia over known periods of about 12 h. Six boys (birthweight less than 1500 g) with gestation of 27-35 weeks were studied either two or three times at post-natal ages ranging from 13 to 54 d. There was no significant correlation between protein turnover with increasing post-conceptional or post-natal age. There was considerable interindividual variation and reproducibility varied between different infants. We suggest that this is a convenient non-invasive technique for monitoring serially nitrogen and protein metabolism in infants and that as such it merits further assessment
The effects of maternal smoking and tobacco composition on placental functional morphology
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