Pathogen Identification
Pathogen Identification - Related Videos
01:25
Rapid Identification of Pathogens
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2026
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...
06:34
Identification of Rare Bacterial Pathogens by 16S rRNA Gene Sequencing and MALDI-TOF MS
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Cited by 29 •
2016
Matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS) and molecular techniques (16S rRNA gene sequencing) permit the identification of rare bacterial pathogens in routine diagnostics. The goal of this protocol lies in the combination of both techniques which leads to more accurate and reliable data.
06:58
Isolation, Behavioral Identification, and Pathogenicity Assessment of Entomopathogenic Fungi from a Forest Wood Borer
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2023
Here we present a protocol for obtaining entomopathogenic fungi from a forest wood borer and a substitutive way to evaluate their entomopathogenic activities using a Coleopteran model insect. This method is efficient and convenient for exploring entomopathogenic fungal resources from wood-boring insect pests in natural forests.
10:27
In Silico Identification and Characterization of circRNAs During Host-Pathogen Interactions
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Cited by 1 •
2022
The protocol submitted here explains the complete in silico pipeline needed to predict and functionally characterize circRNAs from RNA-sequencing transcriptome data studying host-pathogen interactions.
10:39
Single Cell Measurements of Vacuolar Rupture Caused by Intracellular Pathogens
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Cited by 22 •
2013
We describe a method for tracking the endomembrane rupture elicited by the intracellular bacteria Shigella flexneri and Mycobacterium tuberculosis upon host cell invasion. Our assay makes use of CCF4, a host cytoplasmic FRET probe in live or fixed cells. This reporter is degraded by an enzyme activity present on the bacterial surface.
FAQs
These methods target different evidence of infection. Microscopy examines characteristic cellular structures, whereas culture relies on recovering the microorganism for analysis. Antigen detection recognizes pathogen-associated molecules, nucleic acid amplification detects genetic sequences, and serology measures immune responses. Using these complementary signals helps distinguish bacteria, viruses, fungi, and parasites when one type of evidence is insufficient.
The biological signal determines what the test can reveal about infection. Cellular structures may support visual recognition, genetic sequences can provide a pathogen-specific molecular signal, and antigens indicate components associated with the infectious agent. Serology instead reflects the host response. Selecting among these signals connects laboratory findings with both the microorganism and the immunological context.
Serology adds information about how the host immune system has responded to infection rather than focusing only on the organism itself. By analyzing immune responses, investigators can complement findings from microscopy, culture, antigen detection, or nucleic acid amplification. This distinction is particularly valuable in immunology and infection research, where pathogen recognition and host defense are studied together.
Testing begins with analysis of a clinical specimen, followed by selection of an approach suited to the evidence being sought. Microscopy examines structures, culture assesses recoverable microorganisms, antigen detection targets pathogen components, nucleic acid amplification examines genetic sequences, and serology evaluates host responses. This matching determines whether results emphasize the agent itself or the body's reaction.
Identifying the responsible infectious agent supports targeted antimicrobial selection rather than relying only on broad assumptions about the disease. The result connects a clinical infection with a particular bacterium, virus, fungus, or parasite, helping guide treatment decisions. This diagnostic role also links laboratory analysis to patient care and to broader efforts to manage infectious disease.
Identification results can support outbreak tracking by distinguishing the agents associated with cases and by contributing to surveillance of emerging pathogens. They also inform infection-control responses by clarifying which infectious agent is present. Beyond immediate case management, the same information supports development of vaccines and diagnostic tools and helps researchers examine host defenses during infection.