Related Experiment Video
Updated: Jul 7, 2026

14:16
Fluorescence detection methods for microfluidic droplet platforms
Published on: December 10, 2011
[Phosphorescent microanalysis as a new technical platform for molecular diagnostics]
Vestnik Rossiiskoi Akademii Meditsinskikh Nauk
|January 30, 2008
Summary
A new phosphorescent multiplex microanalysis (PHOSPHAN) platform enhances molecular diagnostics. This technology offers high sensitivity for detecting analytes and microbial cells, improving molecular diagnostic capabilities.
Area of Science:
- Biotechnology
- Analytical Chemistry
- Molecular Diagnostics
Background:
- Solid-phase microplate analysis and microarray laser scanning are established techniques.
- Existing methods have limitations in sensitivity and scope for molecular diagnostics.
Purpose of the Study:
- To introduce phosphorescent multiplex microanalysis (PHOSPHAN) as a novel technological platform.
- To explore the application prospects of PHOSPHAN in molecular diagnostics.
Main Methods:
- PHOSPHAN integrates solid-phase microplate analysis with microarray laser scanning.
- It utilizes biospecifically bound analytes on microplate surfaces.
- Real-time registration of phosphorescent signals is employed.
Main Results:
- The detection system sensitivity is approximately 1000 molecules of Pt coproporphyrin mark.
- PHOSPHAN can detect individual microbial cells in samples.
- It enhances analyte detection sensitivity in eluted microaliquots from dried blood spots.
Conclusions:
- PHOSPHAN represents a significant advancement in molecular diagnostic technology.
- The platform demonstrates high sensitivity and broad applicability.
- Key elements of the technology are protected by Russian patents.
Related Concept Videos
Photoluminescence: Applications
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
Fluorescence and Phosphorescence: Instrumentation
Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
Two-Dimensional Microscopy in Microbiology
Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...
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...
