Polar Metabolite Analysis
Polar Metabolite Analysis - Related Videos
11:17
A Simple Fractionated Extraction Method for the Comprehensive Analysis of Metabolites, Lipids, and Proteins from a Single Sample
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Cited by 67 •
2017
A protocol for comprehensive extraction of lipids, metabolites and proteins from biological tissues using one sample is presented.
08:03
A Tandem Liquid Chromatography–Mass Spectrometry-based Approach for Metabolite Analysis of Staphylococcus aureus
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Cited by 1 •
2017
Here we describe a protocol for the extraction of metabolites from Staphylococcus aureus and their subsequent analysis via liquid chromatography and mass spectrometry.
12:49
Purification of Transcripts and Metabolites from Drosophila Heads
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Cited by 12 •
2013
We describe here the procedures for the extraction and purification of mRNA and metabolites from Drosophila heads. We are applying these techniques to better understand the cellular perturbations underlying neuronal degeneration. These methodologies can be easily scaled and adapted for other "omic" projects.
01:01
Group Polarization
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2020
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition. The phenomenon of group polarization explains many actions taken by groups that would not...
11:25
Multi-step Preparation Technique to Recover Multiple Metabolite Compound Classes for In-depth and Informative Metabolomic Analysis
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Cited by 29 •
2014
The reliability of results in metabolomics experiments depends on the effectiveness and reproducibility of the sample preparation. Described is a rigorous and in-depth method that enables extraction of metabolites from biological fluids with the option of subsequently analyzing up to thousands of compounds, or just the compound classes of interest.
FAQs
Polarity-sensitive chromatography separates compounds according to how strongly they interact with water and the chromatographic stationary phase. This is important because chemically similar water-soluble metabolites may otherwise overlap in a sample mixture. Better separation allows subsequent detection methods to distinguish sugars, amino acids, organic acids, and nucleotide-related compounds more reliably, supporting clearer comparisons between biological conditions.
Extraction determines which water-soluble compounds are recovered from cells, tissues, or biological fluids, while handling affects the quality of the resulting profile. Inconsistent preparation can alter comparisons between samples and obscure biological differences. Careful, consistent handling therefore strengthens interpretation of changes associated with energy production, biosynthesis, redox balance, development, disease, environmental conditions, or treatment.
Mass spectrometry provides a detection and identification stage after metabolites have been separated. It helps characterize the compounds present in the analyzed sample and supports comparison of their profiles across biological conditions. Used with chromatography, this combination links chemical measurements to pathway-level interpretation, including changes in energy production, biosynthetic activity, and cellular responses.
A typical workflow begins by collecting a biological sample such as cells, tissue, or fluid and extracting its water-soluble small molecules. The extract is then separated with polarity-sensitive chromatography, followed by detection and identification using mass spectrometry or a related analytical method. Comparative analysis of the resulting profiles supports interpretation of metabolic and cellular changes.
The approach can be applied to cells, tissues, and biological fluids, provided the relevant water-soluble metabolites are recovered during extraction. The selected sample type should match the biological question, because profiles may reflect different aspects of development, disease, environmental exposure, or treatment. Comparing appropriately prepared samples can reveal condition-associated metabolic changes.
Comparative metabolite profiles can indicate changes in energy production, biosynthetic pathways, and redox balance. They can also reveal cellular responses to development, disease, environmental conditions, or treatment. These measurements support pathway interpretation and biomarker discovery by showing how groups of small molecules change across defined biological states rather than focusing on a single compound alone.