Abstract
Introduction
Gestational hypertension (GH) is defined as the presence of systolic blood pressure (BP) ≥ 140 mm Hg and/or diastolic BP ≥ 90 mm Hg, measured at least 4 h apart after 20 weeks of gestation. Early identification of women at high-risk of developing GH could contribute significantly towards improved maternal and fetal outcomes.
Objectives
To determine early metabolic biomarkers in women with GH as compared with normotensive women.
Methods
Serum samples were collected from subjects during three stages of their pregnancy: 8–12 weeks, 18–20 weeks and after 28 weeks (< 36 weeks) of gestation and studied using nuclear magnetic resonance (NMR) metabolomics approach. Multivariate and univariate analyses were performed to determine the significantly altered metabolites in GH women.
Results
A total of 10 metabolites, including isoleucine, glutamine, lysine, proline, histidine, phenylalanine, alanine, carnitine, N-acetyl glycoprotein and lactic acid were observed to be significantly downregulated during all pregnancy stages in women with GH as compared with controls. Furthermore, expression of 5 metabolites in the first trimester i.e., phenylalanine [area under the curve (AUC) = 0.745], histidine [AUC = 0.729], proline [AUC = 0.722], lactic acid [AUC = 0.722], and carnitine [AUC = 0.714] exhibited highest potential in discriminating GH from normotensive women.
Conclusion
The present study is the first of its kind to identify significantly altered metabolites that have the potential to discriminate between women at risk of developing GH and normotensive women across three trimesters of pregnancy. This opens up the possibility of exploring these metabolites as potential early predictive markers of GH.
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Data Availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Abbreviations
- HDP:
-
Hypertensive disorders of pregnancy
- GH:
-
Gestational hypertension
- PIH:
-
Pregnancy-induced hypertension
- ACOG:
-
American College of Obstetricians and Gynecologists
- BP:
-
Blood pressure
- NMR:
-
Nuclear magnetic resonance
- MS:
-
Mass spectrometry
- BMI:
-
Body mass index
- PCA:
-
Principal component analysis
- PLS-DA:
-
Partial least squares discriminant analysis
- OPLS-DA:
-
Orthogonal partial least squares discriminant analysis
- HMDB:
-
Human metabolome database
- MetPA:
-
Metabolomics pathway analysis
- MSEA:
-
Metabolite set enrichment analysis
- VIP:
-
Variable-importance in projection
- ROC:
-
Receiver operating characteristic
- AUC:
-
Area under the curve
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The study was designed by SD, ES, PC, CD and KC. Experimentation and data analysis were performed by SD, ES, IM, AB, DS and MJ. The draft of the manuscript was written by SD and AB and reviewed by PC, CD and KC. All authors read and approved the final manuscript.
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All procedures performed were in accordance with the ethical standards of the institutional research committee and with the principles of the 1964 Declaration of Helsinki and its later amendments. Informed consent was obtained from all individual participants included in the study.
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Dasgupta, S., Subramani, E., Mitra, I. et al. Discovery of novel metabolic signatures for early identification of women at risk of developing gestational hypertension. Metabolomics 19, 50 (2023). https://doi.org/10.1007/s11306-023-02012-y
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DOI: https://doi.org/10.1007/s11306-023-02012-y