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Anthelminthic Agents01:15

Anthelminthic Agents

Anthelmintic drugs differ significantly from antiparasitic therapies targeting protozoa, primarily due to differences in parasite biology. Whereas most protozoal treatments act on proliferating cells, anthelmintics are typically directed against mature, nonproliferative helminths. The therapeutic approach considers the helminth's reliance on neuromuscular coordination, glucose metabolism, and microtubular integrity for survival, reproduction, and localization within the host. Most anthelmintics...
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Transducer Mechanism: Nuclear Receptors

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Hormones of the Adrenal Glands01:31

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Related Experiment Video

Updated: Jun 24, 2026

Protocols for Visualizing Steroidogenic Organs and Their Interactive Organs with Immunostaining in the Fruit Fly Drosophila melanogaster
12:10

Protocols for Visualizing Steroidogenic Organs and Their Interactive Organs with Immunostaining in the Fruit Fly Drosophila melanogaster

Published on: April 14, 2017

Recent developments in nematode steroid biochemistry.

D J Chitwood, R Lozano, W R Lusby

    Journal of Nematology
    |March 19, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Caenorhabditis elegans utilizes specific sterols for nutrition, modifying dietary plant sterols through dealkylation and other metabolic steps. Inhibiting these pathways impacts nematode growth and reproduction.

    Keywords:
    Caenorhabditis elegansbiochemistryecdysteroidhormonesteroidsterol

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    Area of Science:

    • Nematode biology
    • Steroid metabolism
    • Biochemistry

    Background:

    • Steroid nutrition, metabolism, and function are critical in nematodes.
    • Caenorhabditis elegans serves as a model organism for studying these processes.

    Purpose of the Study:

    • To review current knowledge on steroid utilization in nematodes.
    • To highlight recent findings on steroid metabolism in Caenorhabditis elegans.
    • To explore potential hormonal roles of steroids in nematodes.

    Main Methods:

    • Analysis of dietary sterol requirements in C. elegans.
    • Investigation of sterol modification pathways, including dealkylation.
    • Assessment of inhibitors affecting sterol metabolism and their impact on nematodes.

    Main Results:

    • C. elegans requires 4-desmethylsterols with trans-A/B ring configuration; cis-A/B or 4-methylated sterols are unsuitable.
    • C. elegans metabolizes plant sterols by removing C-24 alkyl groups and performing other modifications like reduction and dehydrogenation.
    • Azasteroids and alkyl amines inhibit Delta(2)-sterol reductase, impacting C. elegans and parasitic nematodes.

    Conclusions:

    • Steroid structure dictates nutritional suitability for C. elegans.
    • Complex metabolic pathways are involved in nematode sterol utilization.
    • Interference with sterol metabolism offers potential targets for nematode control.