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[Ultrastructure of the normal human adrenal cortex].

W D Zwierzina

    Acta Anatomica
    |January 1, 1979
    PubMed
    Summary

    Electron microscopy reveals distinct mitochondrial ultrastructures in human adrenal cortex zones. These ultrastructural differences, particularly two mitochondrial types, aid in differentiating the zona glomerulosa and zona fasciculata, suggesting a link to cellular activity.

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    Area of Science:

    • Endocrinology
    • Cell Biology
    • Histology

    Context:

    • The human adrenal cortex comprises distinct zones (zona glomerulosa, fasciculata, reticularis) with specialized functions.
    • Understanding the ultrastructural basis of these functional differences is crucial for comprehending adrenal physiology and pathology.

    Purpose:

    • To investigate and delineate ultrastructural variations within the human adrenal cortex using electron microscopy.
    • To identify specific ultrastructural markers, particularly mitochondrial morphology, for differentiating the cortical zones.

    Summary:

    • Electron microscopy revealed significant ultrastructural differences in the human adrenal cortex, focusing on mitochondrial morphology.
    • Two distinct mitochondrial types were observed in the zona glomerulosa and zona fasciculata, suggesting a correlation with the functional activity of these zones.
    • The study also discusses ultrastructural changes related to stress, 'dark and light cells,' and the basal membrane.

    Impact:

    • Provides novel criteria for distinguishing adrenal cortical zones based on mitochondrial ultrastructure.
    • Offers insights into the relationship between mitochondrial morphology and cellular activity in the adrenal cortex.
    • Contributes to a deeper understanding of adrenal gland structure-function relationships and responses to stress.

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