Mårtensson J, Finnström O
Early Hum Dev. 1985 Sep;11(3-4):333-9. doi: 10.1016/0378-3782(85)90087-8.
The metabolic effects of formula feeding on sulfur amino acid degradation were studied in 6 full-term infants on the 6th day of life, and compared to corresponding data from breast-milk fed neonates. A normal excretion of total sulfur and inorganic sulfate was found, indicating an adequate intake of sulfur amino acids and a normal ability to oxidized these compounds to inorganic sulfate. A similar transaminative degradation of cysteine was observed in both groups. Formula-fed infants showed a normal output of methionine, whereas increased cystathionine and decreased taurine excretions were registered. The results were probably a combined effect of a limited intake of taurine, and a multiple immature enzymatic activity.
在6名足月婴儿出生后第6天研究了配方奶喂养对含硫氨基酸降解的代谢影响，并与母乳喂养新生儿的相应数据进行比较。发现总硫和无机硫酸盐排泄正常，表明含硫氨基酸摄入充足，且将这些化合物氧化为无机硫酸盐的能力正常。两组均观察到半胱氨酸类似的转氨基降解。配方奶喂养的婴儿蛋氨酸输出正常，而胱硫醚排泄增加，牛磺酸排泄减少。这些结果可能是牛磺酸摄入有限和多种酶活性不成熟共同作用的结果。
