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[Morphological characteristics of cellular elements in the focus of posttraumatic inflammation in thiamine

A A Ostrovskiĭ, V S Nikitin

    Voprosy Pitaniia
    |September 1, 1987
    PubMed

    Insights

    Vitamin B1 deficiency impairs skeletal muscle healing by reducing macrophage activity and delaying fibroblast differentiation. This affects necrotic tissue resorption and repair processes in mice.

    Area of Science:

    • Cellular Biology
    • Muscle Physiology
    • Nutritional Science

    Background:

    • Vitamin B1 (thiamine) is crucial for cellular metabolism.
    • Hypovitaminosis can impact tissue repair and inflammation.
    • Skeletal muscle trauma initiates an inflammatory and repair cascade.

    Purpose of the Study:

    • To investigate the ultrastructural effects of vitamin B1 deficiency on skeletal muscle inflammation.
    • To determine how different forms of B1 deficiency impact cellular components involved in healing.
    • To elucidate the role of cellular changes in delayed tissue repair.

    Main Methods:

    • Induction of food thiamine deficiency in mice for 30 days.
    • Administration of oxythiamine, a vitamin B1 antimetabolite, for 10 days.
    • Ultrastructural analysis of cellular elements in the aseptic inflammation focus 2-3 days post-trauma.

    Main Results:

    • Both dietary thiamine deficiency and oxythiamine administration caused similar cellular changes.
    • Decreased volume fraction of lysosomes and phagosomes in macrophages.
    • Increased mitochondrial volume density in macrophages and delayed fibroblast differentiation.
    • No significant ultrastructural changes observed in neutrophilic granulocytes, eosinophils, or lymphocytes.

    Conclusions:

    • Vitamin B1 deficiency significantly impairs macrophage phagocytic activity.
    • Reduced macrophage function delays necrotic mass resorption and inhibits reparative processes.
    • Fibroblast differentiation is negatively affected, further hindering muscle healing.

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