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Related Experiment Videos

Experimental studies on insecticides commonly used in India.

S K Nigam, D K Bhatt, A B Karnik

    Journal of Cancer Research and Clinical Oncology
    |January 1, 1981
    PubMed
    Summary

    Hexachlorocyclohexane (BHC) exposure causes sequential liver cell alterations, leading to tumors. Early diagnosis of liver cancer may be possible by monitoring specific biochemical and enzyme changes, though some effects become irreversible with prolonged exposure.

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    Area of Science:

    • Toxicology
    • Oncology
    • Biochemistry

    Background:

    • Hexachlorocyclohexane (BHC) is a chemical agent studied for its potential to induce liver cancer.
    • Early diagnostic markers for chemically induced liver cancer are crucial for timely intervention.

    Purpose of the Study:

    • To identify parameters for the early diagnosis of liver cancer using BHC as a model.
    • To evaluate the cytogenetic effects of BHC on cell division.
    • To understand the histopathological, histoenzymological, biochemical, and electrophoretic changes induced by BHC.

    Main Methods:

    • Histopathological, histoenzymological, biochemical, and electrophoretic analyses were performed.
    • Cytogenetic studies assessed mitotic and meiotic divisions.
    • Electron microscopy examined cellular alterations.

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    Main Results:

    • BHC exposure led to significant liver weight changes and sequential cellular alterations culminating in tumors.
    • Histochemical analysis revealed specific glycogen accumulation and iron distribution patterns.
    • Electron microscopy showed endoplasmic reticulum proliferation; enzyme alterations were noted in organelles.
    • Biochemical assays indicated decreased activity in gluconeogenic enzymes and dehydrogenases, impacting energy metabolism.
    • Eight months of continuous BHC feeding resulted in irreversible changes in G6Pase activity.
    • Polyacrylamide gel electrophoresis detected alterations in serum proteins and LDH isoenzymes.

    Conclusions:

    • BHC induces progressive liver damage and tumor formation.
    • Specific biochemical and enzyme changes may serve as early diagnostic indicators for liver cancer.
    • Prolonged BHC exposure can cause irreversible damage, highlighting the importance of exposure duration.