Transmission and Scanning Electron Microscopy of the Human Ceruminous Apocrine Gland

Kawabata, Isuzu; Kurosumi, Kazumasa

doi:10.1679/aohc1950.39.231

Cited by 14 publications

(2 citation statements)

References 36 publications

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“…The fine structure of the secretory portion of this gland was recently reported elsewhere KAWABATA and KUROSUMI, 1976). As already mentioned, the auditory meatus is lacking in the eccrine gland and provides a useful and reliable material containing the apocrine gland and its duct exclusively.…”

Section: Apocrine Sweat Ductmentioning

confidence: 67%

Fine Structure of the Human Sweat Ducts of Eccrine and Apocrine Types

Kurosumi

1977

Arch. Histol. Jap., Arch. Histol. Jpn

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Section: Apocrine Sweat Ductmentioning

confidence: 67%

Fine Structure of the Human Sweat Ducts of Eccrine and Apocrine Types

Kurosumi

1977

Arch. Histol. Jap., Arch. Histol. Jpn

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“…Although this has been well demonstrated in mammary glands (Linzel 1955;Moore et al 1987) and in human ceruminous glands (Kawabata and Kurosumi 1976), findings in the salivary and Harderian glands are inconclusive (Garret and Emmelin 1979;Satoh et al 1993Satoh et al , 1994. Myoepithelial cells are known to be different in different glands in terms of their shape and arrangement of cell processes in relation to the glandular endpieces (Nagato et al 1980;Satoh et al 1994).…”

Section: Discussionmentioning

confidence: 94%

Secretagogue-induced apocrine secretion in the Harderian gland of the rat

Gesase

Satoh

Ono

1996

Cell and Tissue Research

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Harderian glands of male albino rats were stimulated with secretagogues and examined by transmission and scanning electron microscopy for the purpose of studying the apocrine secretory mechanism. Rats in the control group were perfused with standard HEPES-buffered Ringer's solution. Their glandular endpieces showed wide lumina that contained few secretory materials; spontaneous exocytosis was sometimes observed. However, there were no features suggestive of an apocrine secretory mechanism or myoepithelial cell contractions. After stimulation with NaF+AlCl 3 or carbachol in HEPES-buffered Ringer's solution, the rats shed "bloody tears" and the glandular lumina were jammed with apical protrusions, cytoplasmic material and secretory products. The basal surface of the glandular cells showed bulging caused by myoepithelial cell contraction. Perfusion with HEPES-buffered Ringer's solution containing papaverine inhibited secretagogue-induced myoepithelial cell contraction but not the enhanced secretory activities of the glandular cells. The present results demonstrate that the Harderian gland of the rat can release secretory material not only by exocytosis, but also by an apocrine mechanism under stimulating conditions, and that myoepithelial cell contraction may not be involved in causing apical protrusion in the glandular cells.& k w d :

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Secretory mechanisms of human ceruminous glands: A transmission and scanning electron microscopic study

Testa-Riva

Puxeddu

1980

Anat. Rec.

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Two secretory mechanisms (eccrine and apocrine) were observed by transmission and scanning electron microscopy in the same secretory cells of the human ceruminous glands. The eccrine secretion occurs as a typical exocytosis by fusion of the limiting membrane of the secretory granule with the apical plasmalemma. The apocrine secretion is more complex and takes place by sequential steps: bulging of the cellular apex into the lumen, constriction of the projection, and detachment of it from the cell. This mechanism generally causes the removal of the entire projection all at once by decapitation at its base; some variations of this process have been found, however, and are described in the present work. A double membrane, apparently separating the apical protrusion from the rest of the cell, is noticeable in our photographs. Nevertheless, even if this membrane is very similar to a demarcation layer, we consider it as an intercellular double membrane separating two obliquely sectioned cells.

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Transmission and Scanning Electron Microscopy of the Human Ceruminous Apocrine Gland

Abstract: Summary.The myoepithelial cells of the human ceruminous apocrine gland were observed with transmission and scanning electron microscopes.

Cited by 14 publications

References 36 publications

Fine Structure of the Human Sweat Ducts of Eccrine and Apocrine Types

Fine Structure of the Human Sweat Ducts of Eccrine and Apocrine Types

Secretagogue-induced apocrine secretion in the Harderian gland of the rat

Secretory mechanisms of human ceruminous glands: A transmission and scanning electron microscopic study

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