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[Human lung connective tissue in postnatal ontogeny]

A A Kasimtsev, V G Nikolaev

    Morfologiia (Saint Petersburg, Russia)
    |November 1, 1993
    PubMed
    Summary

    Human lung connective tissue changes with age, showing regional differences. Basal regions exhibit earlier transformations, indicating distinct anatomical zones of aging in the lungs.

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    Area of Science:

    • Histology
    • Pulmonology
    • Gerontology

    Context:

    • Connective tissue undergoes significant structural and compositional changes throughout postnatal development.
    • Understanding age-related lung alterations is crucial for diagnosing and managing respiratory diseases.

    Purpose:

    • To investigate the age-related changes in human lung connective tissue structures across different postnatal developmental stages.
    • To analyze the qualitative and quantitative composition of connective tissue and its spatial distribution within the lung framework.

    Summary:

    • This study examined 147 human lung specimens from newborns to 82-year-olds, revealing age-dependent alterations in connective tissue.
    • Findings indicate lateral fiber aggregation and increased connective tissue mass with age.
    • Significant heterochronia was observed, with basal lung regions showing earlier age-related transformations compared to apical regions (except perivasal tissue).
    • Three distinct anatomical zones were identified based on the apico-basal gradient of these age-related changes.

    Impact:

    • Provides novel insights into the regional heterogeneity of lung aging.
    • Establishes a basis for understanding localized age-related functional changes in the lungs.
    • Contributes to the fields of respiratory aging research and clinical pulmonology.

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