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Related Experiment Videos

CS2 binding to rat spinal neurofilaments

H Savolainen, E Lehtonen, H Vainio

    Acta Neuropathologica
    |March 31, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Carbon disulfide (CS2) binds to rat spinal cord neurofilaments, with higher sulfur binding observed in controls. This binding may contribute to neurofilament increase in chronic CS2 intoxication.

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    Area of Science:

    • Neuroscience
    • Toxicology
    • Biochemistry

    Background:

    • Carbon disulfide (CS2) is a known neurotoxin.
    • Neurofilaments are key structural components of neurons.
    • The precise mechanism of CS2 neurotoxicity, particularly its interaction with neurofilaments, requires further elucidation.

    Purpose of the Study:

    • To investigate the binding of carbon disulfide (CS2) to rat spinal cord neurofilaments.
    • To compare CS2 binding in control versus phenobarbitone-pretreated rats.
    • To explore the protein association and time-course of CS2 binding to neurofilaments.

    Main Methods:

    • Intraperitoneal injection of CS2 in rats (control and phenobarbitone-pretreated).
    • Analysis of CS2 sulfur and carbon binding to spinal cord neurofilaments at 3 and 6 hours post-injection.

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  • Electrophoresis to determine protein-bound CS2.

    • Main Results:

    • CS2 sulfur binding to neurofilaments was 31% higher in control rats compared to phenobarbitone-pretreated rats.
    • Approximately 50% of neurofilament-associated CS2 sulfur was protein-bound.
    • About 30% of the initial CS2 sulfur remained bound at 6 hours.
    • CS2 carbon binding was significantly lower than sulfur binding and was entirely protein-bound in controls at 3 hours.

    Conclusions:

    • CS2 exhibits significant binding to neurofilament proteins in the rat spinal cord.
    • Phenobarbitone pretreatment reduces CS2 sulfur binding to neurofilaments.
    • The high affinity of CS2 for neurofilament proteins may be a contributing factor to the observed neurofilament hypertrophy in chronic CS2 intoxication.