We show that fetuin, a fetal glycoprotein present in fetal plasma in concentrations substantially higher than in the adult, can exert a protective function against ill-effects of the bacterial endotoxin, lipopolysaccharide (LPS), in pregnancy. The concentration of fetuin in plasma of pregnant rats (E17 gestation) was artificially increased by repeated intraperitoneal administration of this protein. This was followed by an injection of a standard dose of LPS, a dose that produced in control animals (no additional fetuin) nearly 50% abortions and 40% maternal deaths. None of the females exposed to increased fetuin died following LPS injection. Nine out of 10 multigravida animals carried their pregnancy to full term but all primagravidas aborted.

Keywords:
Fetuin, Lipopolysaccharide, Pregnancy, Cytokines, Rat
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1998
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