Immunocytochemical localization of tyrosine hydroxylase, dopamine-beta-hydroxylase and phenylethanolamine-N-methyltransferase in the adrenal glands of the frog and rat by a peroxidase-antiperoxidase method

Ikuko NagatsuS Inagaki


The subcellular localizations of tryrosine hydroxylase (TH), dopamine-beta-hydroxylase (DBH) and phenylethanolamine-N-methyltransferase (PNMT) in the adrenal glands of the frog and rat have been examined by a peroxidase-antiperoxidase (PAP) method. TH was localized in the ground substance of the adrenaline-containing cells and noradrenaline-containing cells, but not in the nucleus or in the mitochondria. TH was also located on the outside of the membrane of the chromaffin granules. DBH was observed only inside the granules. PNMT was found not only in the ground substance but also on the membrane of some adrenaline-containing granules. Cortical lipid cells of the frog adrenals did not show TH-, DBH-, and PNMT-reactions. The negative reactions to TH-, DBH-, and PNMT-antiserum exhibited by the summer cells of the frog adrenals prove that they belong to the cortical cells.


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Related Concepts

Establishment and Maintenance of Localization
Ground Substance
Immune Sera
Cell Nucleus
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Chromaffin Granule
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