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Sample Preparation for Analysis: Overview

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Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...

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

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

Published on: November 29, 2024

Sample Preparation and Data Analysis for NMR-Based Metabolomics.

Tapas K Mal¹, Yuan Tian², Andrew D Patterson²

¹Department of Chemistry, Pennsylvania State University, University Park, PA, USA. tapas@psu.edu.

Methods in Molecular Biology (Clifton, N.J.)

|September 14, 2020

Summary

This summary is machine-generated.

Nuclear Magnetic Resonance (NMR) spectroscopy is a powerful tool for metabolomics, enabling simultaneous metabolite identification and quantification in biological samples. This study details sample preparation and NMR methods for comprehensive metabolic analysis and biomarker discovery.

Keywords:

COSY CPMG HMBC HRMAS HSQC Metabolomics NMR TOCSY

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Area of Science:

Analytical Chemistry
Biochemistry
Molecular Biology

Background:

Nuclear Magnetic Resonance (NMR) spectroscopy is a preferred technique for metabolomics due to its non-destructive nature, reproducibility, and ability to analyze complex biological mixtures.
Metabolomics studies using NMR involve measuring and statistically analyzing metabolites in various biological samples like biofluids, tissues, and stool.

Purpose of the Study:

To describe methodologies for preparing biological samples (biofluids, tissues, stool) for NMR-based metabolomics.
To outline the application of various NMR experiments for metabolite identification and quantification.
To highlight the use of multivariate statistical analysis for biomarker discovery and other applications.

Main Methods:

Sample preparation protocols for biofluids (serum, saliva, urine), stool/feces, intestinal content, and tissues, including polar metabolite extraction.
Acquisition of 1D (¹H NMR with variations) and 2D NMR experiments (TOCSY, COSY, J-resolved, HSQC, HMBC) for metabolite profiling and identification.
Application of targeted and untargeted multivariate statistical analysis on NMR data.

Main Results:

Established methodologies for sample preparation and NMR data acquisition in metabolomics.
Demonstrated utility of various NMR techniques for comprehensive metabolite analysis.
Successful application of statistical analysis for biomarker discovery, clinical diagnosis, and molecular phenotyping.

Conclusions:

NMR spectroscopy is a versatile and robust technique for metabolomics research.
Standardized sample preparation and NMR methods facilitate reliable metabolic profiling.
NMR-based metabolomics holds significant potential for various biological and clinical applications.