Bile acids during pregnancy: Trimester variations and associations with glucose homeostasis

Health Science Reports

Olivier Barbier¹  S. John Weisnagel¹  Claudia Gagnon¹  Anne‐Marie Carreau¹  Jocelyn Trottier¹  Anne‐Sophie Morisset²  Marianne Gagnon² 

[1] Endocrinology and Nephrology Unit CHU of Québec‐Université Laval Research Center Quebec Canada;School of Nutrition Laval University Quebec Canada;

关键词: bile acids;    cholestasis;    gestational diabetes mellitus;    glucose homeostasis;    insulin sensitivity;    nutrition;   

DOI  :  10.1002/hsr2.243

来源: DOAJ

【 摘 要 】

Abstract Background and aims Bile acids are known to contribute to hepatic glucose and lipid metabolism regulation. Although glucose homeostasis sustains well‐characterized modifications during uncomplicated pregnancies, changes in bile acids concentrations and relative proportions throughout pregnancy remain unknown. Furthermore, literature shows strong associations between bile acids profiles and glucose homeostasis under normal metabolic conditions. We seek, first, to characterize bile acids' metabolic changes across trimesters and, second, to evaluate associations between changes in bile acids and glucose homeostasis indexes in the first and second trimesters. Methods A total of 78 women were recruited and followed at each trimester of pregnancy. Fasting serum samples were collected once per trimester in which quantitative measurement of 30 different bile acids' molecules were performed using liquid chromatography with tandem mass spectrometry (LC‐MS/MS). Glucose homeostasis indexes were measured in the first and second trimesters, after a 12‐hour fast and following a 75 g oral glucose tolerance test. Results Total bile acids increased from the first trimester to late pregnancy, along with the cholic acid: chenodeoxycholic acid and conjugated: unconjugated bile acids ratios. Changes in bile acids were positively associated with elevated peripheral and hepatic insulin resistance indexes, as well as with trimestral changes in these indexes. Conclusion Our findings suggest that modifications occurring in bile acids' profiles during normal pregnancy are associated with changes in glucose homeostasis. Further research is needed to examine the nature of those associations and the possible outcome of bile acids changes on pathological glucose homeostasis alterations during pregnancy.

【 授权许可】

Unknown