Journal
JOURNAL OF CLINICAL MEDICINE
Volume 12, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/jcm12020616
Keywords
intrahepatic cholestasis of pregnancy; total bile acid; ursodeoxycholic acid; placenta
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Intrahepatic cholestasis of pregnancy (ICP) is characterized by elevated total bile acids (TBA). It is unclear why some fetuses are more prone to the hazardous effect of bile acids (BA) over the others. We aimed to compare TBA levels in umbilical vein and artery to maternal TBA in women with ICP. The study included 18 women and 23 fetuses, and we found that the TBA level in umbilical vein was significantly lower compared to maternal TBA level.
Intrahepatic cholestasis of pregnancy (ICP) is characterized by elevated total bile acids (TBA). Although elevated maternal TBA is a major risk factors for fetal morbidity and mortality, it is unclear why some fetuses are more prone to the hazardous effect of bile acids (BA) over the others. It is unclear whether fetuses are protected by placental BA uptake, or it is the fetal BA metabolism that reduces fetal BA as compared to maternal levels. Therefore, we aimed to compared TBA levels in the umbilical vein and artery to maternal TBA in women with ICP. The study included 18 women who had TBA > 40 mu mol/L and their 23 fetuses. We found that the TBA level in umbilical vein was significantly lower compared to maternal TBA level. The TBA levels in umbilical vein and umbilical artery were similar. No fetus had a serious neonatal complication. Importantly, since TBA level remains low even though maternal TBA level is high the fetuses are protected from the hazardous effects of maternal BA. Our findings suggest that there is no effective metabolism of BA in the fetus and the main decrease in TBA in the fetus is related to placental BA uptake.
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