Related Experiment Video
Updated: Oct 18, 2025
Assessing Hepatic Metabolic Changes During Progressive Colonization of Germ-free Mouse by 1H NMR Spectroscopy
Published on: December 15, 2011
Practical and Robust NMR-Based Metabolic Phenotyping of Gut Health in Early Life
Liene Bervoets1, Johannes H Ippel2, Agnieszka Smolinska3
1Department of Medical Microbiology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, 6229 HX Maastricht, The Netherlands.
Insights
Researchers developed a robust infant fecal metabolomics protocol using proton NMR spectroscopy. This method accurately analyzes the infant gut metabolome, revealing age-related changes in metabolites like short-chain fatty acids.
Area of Science:
- Microbiome research
- Pediatric metabolomics
- Gut health analysis
Background:
- Standardized fecal metabolomics protocols are lacking for infant studies.
- Infant gut microbiome development is crucial for long-term health.
- Proton 1H NMR spectroscopy offers a powerful tool for metabolomic analysis.
Purpose of the Study:
- To develop and validate a robust, hands-on protocol for infant fecal metabolomics using proton 1H NMR spectroscopy.
- To optimize sample preparation methods including extraction solvent, dilution, homogenization, filtration, and centrifugation.
- To analyze age-related metabolic profiles in infant feces.
Main Methods:
- Optimization of infant fecal sample preparation for proton 1H NMR spectroscopy.
- Evaluation of extraction solvent, dilution ratio, homogenization, filtration, and centrifugation.
- Application of the optimized protocol to fecal samples from seven infants at 8 weeks, 4 months, and 9 months of age.
- Multivariate statistical modeling to assess sample preparation influences and interindividual variation.
Main Results:
- An optimal protocol was established involving water extraction (1:5 feces-to-water), bead beating homogenization, and centrifugation.
- Interindividual variation in fecal metabolomic profiles was generally greater than variation from sample preparation methods, except for filtration.
- Metabolite profiles showed age-dependent changes: elevated milk oligosaccharide derivatives and lactic acid at 8 weeks/4 months, and higher short-chain fatty acids (SCFAs) and branched-chain amino acids (BCAAs) at 9 months.
Conclusions:
- The developed protocol provides a hands-on and robust method for analyzing the infant gut metabolome.
- This standardized approach will facilitate interlaboratory comparisons of infant metabolic profiles.
- The findings contribute to a better understanding of infant gut health and development through metabolomic analysis.
Abstract:
While substantial efforts have been made to optimize and standardize fecal metabolomics for studies in adults, the development of a standard protocol to analyze infant feces is, however, still lagging behind. Here, we present the development of a hands-on and robust protocol for proton 1H NMR spectroscopy of infant feces. The influence of extraction solvent, dilution ratio, homogenization method, filtration, and duration of centrifugation on the biochemical composition of infant feces was carefully evaluated using visual inspection of 1H NMR spectra in combination with multivariate statistical modeling. The optimal metabolomics protocol was subsequently applied on feces from seven infants collected at 8 weeks, 4, and 9 months of age. Interindividual variation was exceeding the variation induced by different fecal sample preparation methods, except for filtration. We recommend extracting fecal samples using water with a dilution ratio of 1:5 feces-to-water to homogenize using bead beating and to remove particulates using centrifugation. Samples collected from infants aged 8 weeks and 4 months showed elevated concentrations of milk oligosaccharide derivatives and lactic acid, whereas short-chain fatty acids (SCFAs) and branched-chain amino acids (BCAAs) were higher in the 9 month samples. The established protocol enables hands-on and robust analyses of the infant gut metabolome. The wide-ranging application of this protocol will facilitate interlaboratory comparison of infants' metabolic profiles and finally aid in a better understanding of infant gut health.
More Related Videos
12:10Stable Isotopic Profiling of Intermediary Metabolic Flux in Developing and Adult Stage Caenorhabditis elegans
Published on: February 27, 2011
11:02Identification and Quantification of Deranged Metabolites in Critically Ill Patients Using NMR-Based Metabolomics
Published on: November 29, 2024
