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Identification and Quantification of Deranged Metabolites in Critically Ill Patients Using NMR-Based Metabolomics
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Identification and Quantification of Deranged Metabolites in Critically Ill Patients Using NMR-Based Metabolomics

Published on: November 29, 2024

An optimised sample preparation method for NMR-based faecal metabonomic analysis.

Junfang Wu1, Yanpeng An, Jianwu Yao

  • 1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, People's Republic of China.

The Analyst
|April 27, 2010
PubMed
Summary
This summary is machine-generated.

Optimizing faecal metabolite extraction for NMR analysis is crucial for studying gut microbiota interactions. Automatic homogenization with Tissuelyser and a 1:10 faeces-to-buffer ratio provide consistent, high-throughput results.

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Area of Science:

  • Metabolomics
  • Microbiome Research
  • Nuclear Magnetic Resonance (NMR) Spectroscopy

Background:

  • Faecal metabonomic NMR analysis is vital for understanding host-microbiota metabolic interactions.
  • Current faecal metabolite extraction methods lack standardization, impacting data reliability (signal-to-noise, pH, chemical shift).

Purpose of the Study:

  • To optimize and standardize faecal metabolite extraction for NMR analysis.
  • To compare different homogenization techniques and extraction parameters for improved consistency and throughput.

Main Methods:

  • Comparison of three homogenization methods: manual ultrasonication, automatic homogenization (Tissuelyser), and combined methods.
  • Systematic optimization of faeces-to-buffer ratio (W(f):V(b)), extraction repetitions, and duration.
  • Evaluation based on metabolite extraction consistency, spectral signal-to-noise ratio, pH, chemical shift consistency, and sample preparation throughput.

Main Results:

  • Automatic homogenization with Tissuelyser demonstrated superior metabolite extraction consistency and high throughput.
  • Recommended optimal faeces-to-buffer ratio of 1:10 (mg/µL).
  • Using the combined first two extracts maximizes spectral quality and metabolite representation.

Conclusions:

  • The optimized method, utilizing automatic homogenization and specific extraction parameters, enhances faecal metabonomic NMR analysis.
  • This standardized approach is suitable for large-scale studies, particularly in human population research.
  • Improved extraction ensures reliable data for investigating gut microbiota and host metabolism.