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Updated: Jun 8, 2026
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Identification and Quantification of Deranged Metabolites in Critically Ill Patients Using NMR-Based Metabolomics
Published on: November 29, 2024
[Human amniotic fluid influenced by different sampling methods during 1H NMR-based metabonomics analysis].
Han Huang1, Xiaohua Wu, Jinglin Zhou
1State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610041, China.
Summary
Proper handling of human amniotic fluid (HAF) is crucial for accurate metabonomics analysis. Storing HAF at -20°C preserves its metabolite profile, unlike other tested methods.
Area of Science:
- Biochemistry
- Analytical Chemistry
- Metabolomics
Context:
- Human amniotic fluid (HAF) is a valuable biofluid for prenatal diagnostics and research.
- Metabolomics aims to comprehensively analyze small molecules within biological systems.
- Standardized methods for HAF sampling and storage are needed for reliable metabolomic studies.
Purpose:
- To evaluate the impact of different storage conditions on HAF composition.
- To establish a reliable metabolite profile database for normal HAF.
- To determine the suitability of 1H-NMR-based metabonomics for HAF analysis.
Summary:
- Four experimental groups (freeze-drying, freeze-thawing, storage at -20°C, room temperature) and a control group were analyzed using 1H-NMR spectroscopy.
- Principal Component Analysis (PCA) revealed significant metabolite profile alterations in all groups except for storage at -20°C.
- Storage at -20°C demonstrated minimal influence on the HAF metabolome compared to the control.
Impact:
- Confirms the potential of 1H-NMR metabonomics for HAF analysis.
- Highlights the critical importance of sample handling and storage conditions.
- Provides a basis for developing standardized protocols for HAF collection and preservation in metabolomic research.
