Related Experiment Video

Updated: Oct 6, 2026

Quantitative Polymerase Chain Reaction (qPCR)-Based Rapid Diagnosis of Helicobacter pylori Infection and Antibiotic Resistance
06:40

Quantitative Polymerase Chain Reaction (qPCR)-Based Rapid Diagnosis of Helicobacter pylori Infection and Antibiotic Resistance

Published on: July 28, 2023

Fingerprinting of Helicobacter pylori strains by matrix-assisted laser desorption/ionization mass spectrometric

C L Nilsson1

  • 1Institute of Medical Biochemistry, Göteborg University, Sweden. carol.nilsson@medkem.gu.se

Rapid Communications in Mass Spectrometry : RCM
|June 16, 1999
PubMed

Insights

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) can identify specific biomarkers for Helicobacter pylori and its strains. This technique offers a new method for bacterial typing and studying genetic changes.

Area of Science:

  • Microbiology
  • Analytical Chemistry
  • Biotechnology

Background:

  • Helicobacter pylori is a common human gastrointestinal pathogen affecting half the global population.
  • Virulence factors in different H. pylori strains contribute to colonization, immune evasion, and pathogenesis.
  • Genomic instability, including gene rearrangements and exchange, is a characteristic of H. pylori.

Purpose of the Study:

  • To establish a set of H. pylori-specific and strain-specific biomarkers.
  • To evaluate the utility of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) for H. pylori analysis.
  • To explore optimal conditions for biomarker detection using MALDI-TOFMS.

Main Methods:

  • Analysis of bacterial lysates and extracts from six distinct H. pylori strains.
  • Testing of three MALDI matrices: alpha-cyano-4-hydroxycinnamic acid, sinapinic acid, and ferulic acid.
  • Investigation of the detergent n-octyl-beta-D-glucopyranoside for analyte solubilization.

Main Results:

  • Identification of a panel of H. pylori-specific biomarkers.
  • Establishment of a probable set of strain-specific biomarkers.
  • Demonstration of MALDI-TOFMS's capability for H. pylori fingerprinting.

Conclusions:

  • MALDI-TOFMS is effective for identifying H. pylori-specific and strain-specific biomarkers.
  • MALDI-TOFMS fingerprinting can be valuable for bacterial typing and studying phenotypic genetic drift in H. pylori strains.

More Related Videos

Gastric Mucosa Quantitative Polymerase Chain Reaction Analysis for Detecting Helicobacter pylori and Antibiotic Resistance05:23

Gastric Mucosa Quantitative Polymerase Chain Reaction Analysis for Detecting Helicobacter pylori and Antibiotic Resistance

Published on: March 7, 2025

Rapid Detection of Fecal Antigen of Helicobacter pylori Infection Based on Double Antibody Sandwich Detection Technology03:33

Rapid Detection of Fecal Antigen of Helicobacter pylori Infection Based on Double Antibody Sandwich Detection Technology

Published on: May 23, 2025

Related Concept Videos

MALDI-TOF Mass Spectrometry01:19

MALDI-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...
Mass Spectrometry: Complex Analysis01:21

Mass 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...
Matrix-Assisted Laser Desorption Ionization (MALDI)01:08

Matrix-Assisted Laser Desorption Ionization (MALDI)

Matrix-assisted laser desorption ionization (MALDI) is a powerful analytical technique used in mass spectrometry. It enables the identification and characterization of various biomolecules, including proteins, peptides, nucleic acids, and carbohydrates. MALDI is an ionization technique, widely employed in biological and medical research, as well as in fields like pharmacology and biochemistry.The analyte of interest, a biomolecule or a mixture of biomolecules, is mixed with a suitable matrix...
Rapid Identification of Pathogens01:25

Rapid Identification of Pathogens

MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...