, Volume 84, Issue 3, pp 231–236 | Cite as

Electron microscopic localization of 5′-nucleotidase in rat salivary glands

Comparative enzyme- and immunohistochemical studies
  • S. Yamashina
  • O. Katsumata
  • I. Wada
  • K. Kato


The localization of 5′-nucleotidase in rat parotid and submandibular glands was investigated at the electron microscope level by an immunohistochemical technique using a highly specific antibody, and the results were compared with those obtained using the newley developed cerium method for enzyme histochemistry. Both methods demonstrated that 5′-nucleotidase is located on the external surface of the luminal plasma membranes of acinar cells as well as on intercalated and striated ductal cells. In the basolateral membranes of these cells, the portions adjacent to myoepithelial cells exhibited intense reaction products, but the other areas of plasma membranes contained only trace amounts of the reaction products. Both cerium-based enzyme histochemistry and immunohistochemistry showed that myoepithelial cells retain the enzyme on their plasma membranes. Neither method produced reaction products in the intracytoplasmic structure of constitutive cells of the salivary glands. We discuss the usefulness of the cerium-ion method for the demonstration of 5′-nucleotidase activity and compare it with the traditional lead-ion method.


Cerium Salivary Gland Acinar Cell Submandibular Gland Basolateral Membrane 
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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • S. Yamashina
    • 1
  • O. Katsumata
    • 1
  • I. Wada
    • 2
  • K. Kato
    • 2
  1. 1.Department of AnatomyKitasato University School of MedicineKitasato, SagamiharaJapan
  2. 2.Department of Physiological Chemistry, Faculty of Pharmaceutical ScienceKyushu UniversityFukuokaJapan

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