N. Radunovic et al., Plasma apolipoprotein A-I and B concentrations in growth-retarded fetuses:A link between low birth weight and adult atherosclerosis, J CLIN END, 85(1), 2000, pp. 85-88
Apolipoprotein B is elevated in growth-retarded compared with normally grow
n fetuses, demonstrating a link between low birth weight and risk of subseq
uent atherosclerosis. Increased apolipoprotein B levels and an elevated apo
lipoprotein B to A-I ratio are predictors of atherogenesis. Elevated apolip
oprotein B levels in young adults have been linked to atherosclerosis in la
ter life, whereas impaired fetal growth has been linked to higher than norm
al apolipoprotein B levels in adulthood. We conducted this research to test
the hypothesis that circulating apolipoprotein A-I and B concentrations di
ffer in growth-retarded compared with normal fetuses. Fetal umbilical plasm
a samples were obtained at diagnostic cordocenteses in 18 growth-retarded a
nd 23 normally grown fetuses. Levels of apolipoprotein A-I and B were measu
red by turbidimetric assay. There were no differences in median (range) pla
sma apolipoprotein A-I concentrations between growth-retarded and normal fe
tuses [0.61(0.30-1.42) vs. 0.60 (0.30-1.63) g/L, respectively; P = 0.94]. I
n Contrast, we found significantly higher plasma apolipoprotein B levels in
growth-retarded us. normal fetuses [0.62 (0.37-1.84) us. 0.40 (0.16-1.47)
g/L, respectively; P < 0.001]. Moreover, the ratio of apolipoprotein B to A
-I was significantly higher in growth-retarded than in normal fetuses [1.00
(0.38-2.42) us. 0.53 (0.31-1.80); P = 0.005]. Levels of apolipoprotein B a
re elevated in growth-retarded fetuses, suggesting a linkage between low bi
rth weight and adult-onset atherosclerosis.