PMID: 6398218Dec 1, 1984Paper

Tissue calmodulin levels in normal and Graves' thyroids

Endocrinologia Japonica
M InabaH Saitoh

Abstract

Calmodulin levels in normal human thyroids and Graves' disease thyroids were measured by specific radioimmunoassay in the presence of ethyleneglycol-bis-(beta-aminoethyl ether)-N,N,N',N'-tetraacetic acid (EGTA). The calmodulin levels in tissues from patients with Graves' disease treated with thionamide drugs were significantly higher than those in normal tissues from euthyroid patients with solitary cold nodules (normal: 484 +/- 50 ng/mg protein, mean +/- SE, n = 15; Graves': 901 +/- 54 ng/mg protein, n = 48, p less than 0.001). Such a rise in calmodulin levels in Graves' disease thyroids was also present even after the administration of 50 micrograms of T3 for 5 days before operation (828 +/- 137 ng/mg protein, n = 6, p less than 0.01). Calmodulin levels in Graves' disease thyroids were closely related to the cell height of follicular epithelium. Calmodulin levels in a columnar cell predominant group were significantly higher than those in a flat cell predominant or a cuboidal cell predominant group (columnar cell predominant: 1150 +/- 118 ng/mg protein, n = 13; flat cell predominant: 561 +/- 125 ng/mg protein, n = 3, p less than 0.05; cuboidal cell predominant: 596 +/- 40 ng/mg protein, n = 25, p less than 0.001). The increas...Continue Reading

Citations

Apr 14, 1986·Biochemical and Biophysical Research Communications·N TakasuY Shimizu

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