Tubule Clustered Body Accompanied with Glycogen Particles in the Striated Duct Cell of Submandibular Gland of the Volcano Rabbit, Romerolagus diaz.

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Tubule clustered bodies accompanied with glycogen particles are a rare organelle that are frequently present in the striated duct cells of the submandibular gland of the volcano rabbit, Romerolagus diaz. The tubule clustered body occur as aggregates of the smooth endoplasmic reticulum, which is sometimes continuous at its margin with the tubular cisternae of a rough endoplasmic reticulum. In a proper section, the individual tubules were round and showed undulating helical tubules 20-25nm in diameter. The author speculated that the various kinds of tubule profile may be produced by sectioning of the helical tubules of the smooth endoplasmic reticulum in parallel arrangement. The small tubule clustered bodies in the apical cytoplasm associate with abundant glycogen particles and some lipid droplets, whereas the large bodies in the infra-nuclear cytoplasm tended to show no glycogen particles. The author's findings suggest that the tubule clustered bodies accompanied with glycogen particles are widely distributed from the apical-to the infra-nuclear cytoplasm of the striated duct cell and play a role in glycogen and/or lipid metabolism.
歯科基礎医学会の論文