Parasitic Nematodes
Parasitic Nematodes - Related Videos
12:40
Cultivation of Heligmosomoides Polygyrus: An Immunomodulatory Nematode Parasite and its Secreted Products
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Cited by 105 •
2015
Heligmosomoides polygyrus is a murine nematode with powerful immunomodulatory capabilities that closely resemble those of highly-prevalent human helminth infection. Here we describe a protocol for the long-term maintenance of the H. polygyrus lifecycle.
10:12
Experimental Infection of Mice with the Parasitic Nematode Strongyloides ratti
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Cited by 2 •
2025
Strongyloides ratti is a parasitic nematode that causes transient infections in laboratory mice, displaying tissue-migrating and intestinal life stages. Here, we present a protocol for the maintenance of the parasite cycle in rats and experimental infection of mice, including parasite quantification in the head, lung, and intestine.
08:04
Culturing and Screening the Plant Parasitic Nematode Ditylenchus dipsaci
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Cited by 2 •
2022
The present protocol describes a reliable and straightforward method for culturing, collecting, and screening Ditylenchus dipsaci.
10:35
In vivo and In vitro Infection of Potato Roots with Plant Parasitic Nematodes for the Assessment of Induced Structural Changes
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Cited by 1 •
2025
The protocol describes infection of Solanum tuberosum roots with plant parasitic nematodes under in vivo greenhouse conditions and potato in vitro transgenic roots for histochemical analysis of root structure through optical microscopy.
09:02
Visualizing Bacteria in Nematodes using Fluorescent Microscopy
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Cited by 20 •
2012
To study the mutualism between Xenorhabdus bacteria and Steinernema nematodes, methods were developed to monitor bacterial presence and location within nematodes. The experimental approach, which can be applied to other systems, entails engineering bacteria to express the green fluorescent protein and visualizing, using fluorescence microscopy bacteria within the transparent nematode.
FAQs
Persistence depends partly on protective surfaces and secreted molecules that help the parasites resist or alter host defenses. These features can influence how immune components detect and respond to the worms, allowing infection to continue in tissues or the intestine. Studying these parasite-host interactions helps explain why some infections become prolonged rather than being rapidly eliminated.
Infection commonly promotes a type 2 immune response involving eosinophils, mast cells, antibodies, and cytokines. These components provide a coordinated response to the parasite, while the nematode may modulate that response through its surfaces or secreted molecules. Examining the balance between immune activation and parasite-mediated alteration is central to understanding infection outcomes.
The entry route helps determine the host locations and early interactions that must be examined. Parasitic nematodes may be acquired through ingestion, skin penetration, or vector transmission, and they can subsequently develop in tissues or the intestine. Comparing these routes provides context for interpreting differences in host defenses, parasite development, and the resulting immune response.
Research focuses on the interaction between parasite features and host responses, including protective surfaces, secreted molecules, eosinophils, mast cells, antibodies, and cytokines. Investigators can relate these interactions to where the parasite develops and how infection persists. This approach connects parasite biology with immune regulation, chronic inflammation, diagnosis, treatment, and vaccine development.
Understanding these infections supports several practical goals: improving diagnostic approaches, developing anthelmintic treatments, and informing vaccine development. The same research also clarifies how parasites alter host defenses and how immune responses contribute to persistent infection. Consequently, parasitic nematodes provide a system for linking infection biology with strategies to detect, control, or prevent disease.
Their ability to persist while modulating host defenses makes them useful for investigating immune regulation and chronic inflammation. Studies can examine how type 2 responses, including cytokines, antibodies, eosinophils, and mast cells, are maintained or altered during infection. This context helps researchers understand not only parasite control but also broader patterns of prolonged host immune activity.