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Cytology and cytochemistry of the pericardial gland cells of Mytilus edulis and their lysosomal responses to injected horseradish peroxidase and anthracene
Moore, M.N.; Bubel, A.; Lowe, D.M. (1980). Cytology and cytochemistry of the pericardial gland cells of Mytilus edulis and their lysosomal responses to injected horseradish peroxidase and anthracene. J. Mar. Biol. Ass. U.K. 60(1): 135-149
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Moore, M.N.
  • Bubel, A.
  • Lowe, D.M.

Abstract
    The epithelial cells of the pericardial gland of M. edulis have been found to contain cytoplasmic granules that are strongly reactive for lysosomal hydrolases and lipofuscin. These granules are interpreted as being secondary lysosomes that are capable of accumulating experimentally injected horseradish peroxidase from the blood. It has also been shown that anthracene causes damage to the integrity of these lysosomes, probably by destabilizing the lysosomal membrane. Ultrastructural evidence is presented for the presence of a highly developed lysosomal-vacuolar system with apocrine and possibly exocytotic excretory mechanisms in these cells. There is also evidence for extensive endocytotic activity at the basal region of the epithelial cells which shows a structural similarity to the pedicels of mammalian podocytes, and the close structural relationship with the basal lamina may indicate a selective filtration mechanism for materials from the blood. It is concluded that these cells are involved in an excretion process involving the uptake and degradation of material from the blood with its eventual secretion at the apical surface of the cell.

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