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. 1979 Aug;76(8):4079-83.
doi: 10.1073/pnas.76.8.4079.

Enkephalin- and somatostatin-like immunoreactivities in human adrenal medulla and pheochromocytoma

Enkephalin- and somatostatin-like immunoreactivities in human adrenal medulla and pheochromocytoma

J M Lundberg et al. Proc Natl Acad Sci U S A. 1979 Aug.

Abstract

By using the Coons indirect immunofluorescence technique, enkephalin-like immunoreactivity with a granular localization was observed in human adrenal medullary gland cells and pheochromocytomas. In two of the tumors and in a few adrenal gland cells, a somatostatin-like peptide could also be identified. Catecholamine cell types were visualized on adjacent sections with antisera to the synthesizing enzymes dopamine-beta-hydroxylase [DBH; dopamine beta-monooxygenase; 3,4-dihydroxyphenylethylamine, ascorbate: oxygen oxidoreductase (beta-hydroxylating), EC 1.14.17.1] and phenylethanolamine-N-methyltransferase (PNMT; noradrenalin N-methyltransferase; S-adenosyl-L-methionine:phenylethanolamine N-methyltransferase, EC 2.1.1.28). In the normal adrenal medulla more DBH- than PNMT-immunoreactive gland cells were observed. In the adrenal pheochromocytoma both DBH- and PNMT-positive cells were seen, whereas the two extra-adrenal tumors contained only DBH. These findings correlated well with plasma catecholamine measurements. Finally, enkephalin immunoreactive fibers and somatostatin immunoreactive cells were observed in a sympathetic ganglion extirpated together with one of the tumors.

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