IMMUNOHISTOCYTOCHEMICAL LOCALIZATION OF CATECHOLAMINE-SYNTHESIZING ENZYMES IN SUPRARENAL, SUPERIOR CERVICAL AND NODOSE GANGLIA OF DOGS

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The localization of three catecholamine-synthesizing enzymes, tyrosine hydroxylase (TH), dopamine-β-hydroxylase (DBH) and phenylethanolamine-N-methyltransferase (PNMT) in some ganglia of dogs was studied by immunohistocytochemical methods. The suprarenal arnd superior cervical ganglion cells showed TH-, DBH- positive and PNMT-negative or TH-positive, DBH- and PNMT-negative reactions by immunofluorescent staining. In the superior cervical ganglia, small numbers of TH-positive, small intensely fluorescent (SIF) cells formed clusters. By immunoelectron microscopy, TH-positive reaction products were observed in the cell matrix and granules of the superior cervical ganglion. In the nodose ganglion, small numbers of TH-positive, DBH-negative dopamine cells with varicose fibers were scattered among many TH-negative principal ganglion cells.
日本組織細胞化学会の論文