[Indicators of protein metabolism in infants with intrauterine dystrophy red various dietary mixtures].
In the previous work published in No 7 of "Development Period Medicine" ( Problemy Medycyny Wieku Rozwojowego ) the results of nitrogen balance studies in S-f-D infants fed different milk formulas were described. The present study concerns other protein metabolism indices in the same infants. The infants were divided into four groups according to the formula they were fed. The composition of formulas is shown in table I. In the infants besides the balance study, serum urea nitrogen, protein and albumin level, were estimated once a month. Also urea, creatine and creatinine, and hydroxyproline in 24-hours urine collections were examined. Excretion of creatine, creatinine and hydroxyproline was summarized in 5 boys from the group of 38 investigated infants in the first five months of life when meat-free diet was fed. The above mentioned indices permit for better assessment of the effect of the diet on protein metabolism and the requirement of protein for S-f-D infants. The results of protein metabolism indices were compared with the indices obtained in F.S. infants similarly fed. Group S of S-f-D infants was compared with group A of F.S. infants and the other groups of S-f-D infants were compared with each other. In S-f-D infants fed formula S, a lower level of serum urea nitrogen was observed in comparison with F.S. infants of group A in spite of greater protein intake in S-f-D infants. This should prove a greater protein requirement in S-f-D infants. Decreased protein content and cow's milk fat modification also had profitable influence on protein utilization because serum urea nitrogen and nitrogen in urine were low in S-f-D infants fed this formula. Urine urea nitrogen as a part of total urine nitrogen is bigger in group S and C infants, and the lowest in group G infants (formula with lower fat and total protein content). Serum protein and albumin level was generally higher in S-f-D infants than in FS ones. Particularly high level of these parameters was observed in group G infants. The most regular behaviour of age trend versus protein and albumin level was observed in S-f-D infants fed formula H and C, fast increase of values was observed in the first half of life. In the S-f-D infants which were given formulas with decreased content of protein H and C group lower excretion of creatine was noted. As in FS infants, a gradual increase of creatine with age and body weight was stated. In 24-hour urine collection creatine excretion was lower, particularly in the infants daily creatinine excretion was positively correlated with body weight, body length and age.(ABSTRACT TRUNCATED AT 400 WORDS)
D000367:Age Factors; D000818:Animals; D001798:Blood Proteins / Q000032:analysis; D001806:Blood Urea Nitrogen; D002417:Cattle; D003401:Creatine / Q000652:urine; D003404:Creatinine / Q000652:urine; D004041:Dietary Fats / Q000008:administration & dosage; D004044:Dietary Proteins / Q000378:metabolism*; D005260:Female; D005317:Fetal Growth Retardation / Q000378:metabolism*; D006128:Growth; D006801:Humans; D006909:Hydroxyproline / Q000652:urine; D007223:Infant; D007225:Infant Food; D007227:Infant Nutritional Physiological Phenomena; D007231:Infant, Newborn; D007236:Infant, Small for Gestational Age; D008297:Male; D008892:Milk; D009584:Nitrogen / Q000378:metabolism; D011247:Pregnancy
D001798:Blood Proteins; D004041:Dietary Fats; D004044:Dietary Proteins; D003404:Creatinine; D003401:Creatine; D009584:Nitrogen; D006909:Hydroxyproline
Wskaźniki przemiany białkowej u niemowlat urodzonych z dystrofia wewnatrzmaciczna (DW) zywionych róznymi mieszankami.