Sun X, Qu T, Wang W, Li C, Yang X, He X, Wang Y, Xing G, Xu X, Yang L, Zhang H. Untargeted lipidomics analysis in women with intrahepatic cholestasis of pregnancy: a cross-sectional study.
BJOG 2021;
129:880-888. [PMID:
34797934 DOI:
10.1111/1471-0528.17026]
[Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/06/2021] [Indexed: 01/02/2023]
Abstract
OBJECTIVE
To compare the plasma lipid profiles in women with normal pregnancies and those with mild or severe intrahepatic cholestasis of pregnancy (ICP). Our goal was to reveal lipidome-wide alterations in ICP and delve into the pathogenesis of ICP from a lipid metabolism perspective.
DESIGN
Cross-sectional study, including women with normal pregnancies, women with mild ICP and women with severe ICP.
SETTING
Gansu Provincial Hospital.
POPULATION
Women with ICP were recruited from October 2019 to March 2020 in Gansu, China.
METHODS
Untargeted lipidomics was used to analyse differentially expressed plasma lipids in controls, in women with mild ICP and in women with severe ICP (n = 30 per group). For lipidomics, liquid chromatography and Q-Exactive Plus Orbitrap mass spectrometry were performed.
MAIN OUTCOME MEASURES
Differentially expressed lipids.
RESULTS
Thirty-three lipids were differentially expressed in the severe and mild ICP groups, compared with the control group, and 20 of those were sphingolipids (ceramide, six species; sphingomyelin, 14 species). All differentially expressed sphingolipids in women with mild ICP were also differentially expressed in women with severe ICP; the fold change and significance of the differential expression were positively correlated with disease severity.
CONCLUSIONS
We systematically characterized the lipidome-wide alterations in mild and severe ICP groups. The results indicated a link between ICP and disordered sphingolipid homeostasis.
TWEETABLE ABSTRACT
Abnormal sphingolipid metabolism is involved in the pathogenesis of ICP.
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