Related Experiment Video
Updated: Aug 8, 2026
16:57
MALDI Imaging Mass Spectrometry of Neuropeptides in Parkinson's Disease
Published on: February 14, 2012
Mass spectrometry, high performance liquid chromatography, and brain peptides
1Department of Neurology, Charles B. Stout Neuroscience Mass Spectrometry Laboratory, University of Tennessee, Memphis 38163, USA.
Biopolymers
|January 1, 1996
Summary
This research details the mass spectrometry (MS) determination of thyrotropin-releasing hormone (TRH) and the development of advanced RP-HPLC MS/MS methods for analyzing opioid neuropeptides in human pituitary tissue.
Area of Science:
- Biochemistry
- Analytical Chemistry
- Neuroendocrinology
Background:
- The determination of hypothalamic releasing factors and pituitary neuropeptides is crucial for understanding endocrine regulation.
- Early mass spectrometry (MS) techniques were foundational for peptide sequencing.
Purpose of the Study:
- To recount the historical development of TRH (thyrotropin-releasing hormone) sequencing using MS.
- To describe the development of novel RP-HPLC MS and MS/MS methods for analyzing native opioid neuropeptides.
Main Methods:
- Amino acid sequence determination of TRH using mass spectrometry.
- Development of reverse-phase high-performance liquid chromatography coupled with mass spectrometry (RP-HPLC-MS).
- Application of tandem mass spectrometry (MS/MS) for qualitative and quantitative analysis.
Main Results:
- Successful sequencing of TRH, a key hypothalamic releasing factor.
- Establishment of sensitive RP-HPLC MS/MS methods for neuropeptide analysis.
- Demonstration of the utility of these methods for human pituitary tissue extracts.
Conclusions:
- Mass spectrometry and advanced chromatographic techniques have revolutionized peptide analysis.
- These methods are vital for the characterization of neuroendocrine peptides.
- The developed techniques provide a robust platform for future research in neuroendocrinology.
More Related Videos
Related Concept Videos
01:19MALDI-TOF Mass Spectrometry
Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
01:33Peptide 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...
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...
01:21Mass Spectrometry: Complex Analysis
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
01:21Tandem Mass Spectrometry
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
01:15High-Performance Liquid Chromatography: Types of Detectors
The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...