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  • Title: Effect of 1-DOPA on calcitonin secretion by thyroid C cells.
    Author: Zabel M.
    Journal: Z Mikrosk Anat Forsch; 1983; 97(2):319-28. PubMed ID: 6138906.
    Abstract:
    After administering 1-DOPA for 7 d a decreased number of secretory granules as well as pronounced rough endoplasmic reticulum and Golgi apparatus were noted in C cells. A single dose of 1-DOPA did not inhibit C cell stimulation induced by a single dose of calcium gluconate. On the other hand, parallel administration of alpha-methyl-DOPA and calcium gluconate did not decrease the number of C cell secretory granules, which were observed after administration of calcium gluconate alone. The data suggest that the presence of DOPAmine (formed the 1-DOPA) in the secretory granules is a prerequisite for normal functioning of secretory processes in thyroid C cells.
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