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Is normal pregnancy cholestatic?

I C Fulton, J G Douglas, D J Hutchon

    Clinica Chimica Acta; International Journal of Clinical Chemistry
    |May 30, 1983
    PubMed
    Summary
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    Normal pregnancy leads to increased cholate levels, indicating mild cholestasis. These bile acid changes normalize postpartum, suggesting a temporary pregnancy-related effect.

    Area of Science:

    • Biochemistry
    • Obstetrics
    • Hepatology

    Background:

    • Bile acid metabolism is crucial during pregnancy.
    • Understanding changes in bile acids can indicate liver function.
    • Pregnancy-associated cholestasis affects maternal and fetal health.

    Purpose of the Study:

    • To investigate changes in plasma conjugated bile acids during normal pregnancy.
    • To determine if these changes persist postpartum.
    • To assess the prevalence of sub-clinical cholestasis in normal pregnancy.

    Main Methods:

    • Sequential measurement of fasting and postprandial plasma conjugated cholate and chenodeoxycholate.
    • Study included 26 women throughout normal pregnancy and postpartum.
    • Analysis of bile acid concentrations at various gestational weeks and 6 weeks postpartum.

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    Main Results:

    • Fasting cholate concentrations increased significantly by 34 weeks gestation and remained elevated postpartum.
    • No significant changes observed in fasting or postprandial chenodeoxycholate.
    • Elevated cholate levels, above reference range, were noted in 5 of 26 women during the third trimester.

    Conclusions:

    • Normal pregnancy is associated with mild, sub-clinical cholestasis.
    • Elevated cholate levels during pregnancy suggest a physiological adaptation.
    • Bile acid profiles return to baseline postpartum.