doi: 10.1530/acta.0.0920658.
Thyrotrophin-responsive adenylate cyclase activity in thyroid toxic adenoma
- PMID: 231370
- DOI: 10.1530/acta.0.0920658
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Thyrotrophin-responsive adenylate cyclase activity in thyroid toxic adenoma
Acta Endocrinol (Copenh).
1979 Dec.
Abstract
The adenylate cyclase system was studied in hyperfunctioning autonomous nodules in comparison with normal thyroid tissue. The basal, TSH- and NaF-stimulated adenylate cyclase activities were tested in purified plasma membrane preparations. Basal enzyme activity in membranes from hyperfunctioning nodules was variable and the response to TSH was either normal, low or absent. The present study demonstrates that an intact adenylate cyclase activity, hyporesponsive to TSH, may exist in the cell membrane of the adenoma.
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