Calcitonin is usually produced by the parafollicular cells of the thyroid. However in an immunohistochemistry experiment we observed that the cells of the serous acini of rat submaxillary gland tissue were stained positive with calcitonin antibodies. We further used immunocytochemistry and nucleic acid hybridization to localize the distribution of calcitonin protein and calcitonin mRNA respecti...

Men and women differ in thyroidal C-cell mass and calcitonin secretion. This difference may have implications for the definition of calcitonin thresholds to distinguish sporadic C-cell hyperplasia from occult medullary thyroid cancer. This retrospective study examined the hypothesis that gender-specific calcitonin thresholds predict occult medullary thyroid cancer more accurately among patients...

This receptor family comprises a group of receptors for the calcitonin/CGRP peptides. The calcitonin (CT), amylin (AMY), gene-related peptide (CGRP) and adrenomedullin (AM) (nomenclature as agreed by NC-IUPHAR Subcommittee on CGRP, AM, AMY, CT [131, 74, 71]) are generated genes CALCR (which codes receptor, CTR) CALCRL receptor-like CLR, previously known CRLR). Their function pharmacology altere...

The TT cells are a continuous line of human C-cells derived from a medullary thyroid carcinoma. These cells produce large quantities of calcitonin and calcitonin gene-related peptide (CGRP) by the differential splicing of a single calcitonin gene transcript. We have used specific cDNA probes for calcitonin and CGRP to study the regulation of the calcitonin gene by dexamethasone, a synthetic glu...

An interlaboratory study for the radioimmunological determination of calcitonin was performed within the European PTH Study Group (ESPG), to improve comparability using external quality control. Twelve laboratories determined calcitonin in 21 deep frozen samples using their respective calcitonin radioimmunoassay systems. The samples included a standard curves of human calcitonin (sequence 1-32)...

INTRODUCTION Treatment for osteoporosis commonly includes the use of bisphosphonates. Serious side effects of these drugs are caused by the inhibition of bone resorption as a result of osteoclast apoptosis. Treatment using calcitonin along with bisphosphonates overcomes these side-effects in some patients. Calcitonin is known to inhibit bone resorption without reducing the number of osteoclasts...

It has been considered that calcitonin is mainly concerned with the regulation of bone metabolism in mammals (Hirsch and Munson, 1969). However, the recent discovery of the stimulatory effect of gastrin or pancreozymin on the secretion of calcitonin in the pig (Cooper et al. 1971, Care et al. 1971) and the inhibitory effect of calcitonin on the gastric secretion in man (Hesch et al. 1971) has r...

PURPOSE To evaluate the diagnostic accuracy of routine calcitonin measurement in patients with nodular thyroid disease. METHODS Consecutive patients with nodular thyroid disease (n = 640) were studied. Serum calcitonin levels were measured under basal conditions, and when basal values were between 10-100 pg/mL, testing was repeated after pentagastrin (PG) stimulation. Patients with previously...

1. We studied the acute effects of intranasal and subcutaneous calcitonin in 40 patients with active Paget's disease of bone. Patients received a single dose of either 400 units of calcitonin delivered as a nasal spray, or 1, 10 or 100 units of subcutaneous calcitonin, or placebo. 2. Subcutaneous salmon calcitonin, administered at doses of 1, 10 and 100 units to nine patients with Paget's disea...

It has been demonstrated that calcitonin-binding sites are present in a variety of tissue types, including in the pituitary gland. Interleukin-6 (IL-6) is also produced in the pituitary and it regulates the secretion of various hormones. In this study, we examined the expression of the calcitonin receptor and the mechanism of IL-6 production induced by calcitonin in the pituitary folliculo-stel...