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Related Concept Videos

Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...

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Ubiquitin Chain Analysis by Parallel Reaction Monitoring
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Published on: June 17, 2020

Doping control analysis of selected peptide hormones using LC-MS(/MS).

Mario Thevis1, Andreas Thomas, Wilhelm Schänzer

  • 1Institute of Biochemistry-Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany. m.thevis@biochem.dshs-koeln.de

Forensic Science International
|July 15, 2011
PubMed
Summary

Liquid chromatography-mass spectrometry (LC-MS/MS) enhances sports drug testing for peptide hormones like insulins and growth factors. New methods improve detection speed and accuracy for prohibited substances in doping control.

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Area of Science:

  • Analytical Chemistry
  • Biochemistry
  • Sports Science

Background:

  • Liquid chromatography-mass spectrometry (LC-MS/MS) is crucial for sports drug testing, especially for peptide hormones.
  • Existing methods often use targeted, top-down approaches for specific prohibited substances like insulins and growth factors.

Purpose of the Study:

  • To review advancements in LC-MS/MS for detecting peptide hormones in sports doping control.
  • To highlight the development of multi-analyte methods and complementary technologies for enhanced detection capabilities.

Main Methods:

  • Utilizing advanced LC-MS/MS techniques for both top-down (intact analytes) and bottom-up (proteotypic peptides) analyses.
  • Employing complementary devices like ion mobility analyzers for improved analyte differentiation.

Main Results:

  • Established multi-analyte methods enable the determination of various prohibited peptide hormones in blood and urine.
  • Ion mobility spectrometry shows promise in differentiating isobaric insulins, enhancing analytical specificity.
  • Bottom-up LC-MS/MS successfully targets proteotypic peptides to distinguish recombinant human growth hormone from endogenous forms.

Conclusions:

  • LC-MS/MS technology is advancing rapidly, offering more sensitive, robust, and multiplexed analytical assays for sports doping control.
  • These developments are essential for meeting the increasing demands for rapid and unambiguous detection of prohibited peptide hormones.