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Effect of dietary cholesterol on cholesterol synthesis in breast-fed and formula-fed infants.

Wong WW, Hachey DL, Insull W, Opekun AR, Klein PD
J Lipid Res. 1993 34 (8): 1403-11

PMID: 8409771

The fractional synthesis rate (FSR) of cholesterol was measured in 6 breast-fed and 12 formula-fed infants (ages 4 to 5 months) using the 2H2O method. The breast-fed infants had higher cholesterol intakes (18.2 +/- 4.0 vs. 3.4 +/- 1.8 mg/kg per day, P = 0.001), plasma total cholesterol (183 +/- 47 vs. 112 +/- 22 mg/dl, P = 0.013), and plasma low density lipoprotein (LDL)-cholesterol (83 +/- 26 vs. 48 +/- 16 mg/day, P = 0.023) than the formula-fed infants (6.9 +/- 2.6 vs. 2.1 +/- 0.6%/day, P < 0.001). Among all infants, there was a significant inverse relationship (P = 0.002, r = 0.66) between the FSR of cholesterol and dietary cholesterol intake. Our findings indicate that the greater cholesterol intake of the breast-fed infants was associated with elevated plasma LDL-cholesterol concentrations and that cholesterol synthesis in human infants may be efficiently regulated via HMG-CoA reductase when infants are challenged with high intakes of dietary cholesterol.

MeSH Terms (12)

Breast Feeding Cholesterol Cholesterol, Dietary Deuterium Female Humans Infant Infant Food Kinetics Male Milk, Human Regression Analysis

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