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Stimulation of adult chondrocyte metabolism by a thyroid‐derived factor
Author(s) -
Jones Deryk G.,
Smith R. Lane
Publication year - 1990
Publication title -
journal of orthopaedic research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.041
H-Index - 155
eISSN - 1554-527X
pISSN - 0736-0266
DOI - 10.1002/jor.1100080211
Subject(s) - calcitonin , endocrinology , medicine , chondrocyte , thyroid , glycosaminoglycan , stimulation , chemistry , hormone , cartilage , biology , biochemistry , anatomy
This paper reports the effects of adding partially purified bovine thyroid calcitonin, thyrocalcitonin, to adult bovine articular cartilage cells. Thyrocalcitonin stimulated chondrocyte proliferation fourfold under low serum (0.5%) culture conditions. In serum‐free medium, thyrocalcitonin stimulated cell proliferation more than twofold. With high‐density cultures in serum‐free medium, chondrocyte glycosaminoglycan (GAG) synthesis was stimulated 60% by thyrocalcitonin. Cell‐associated radioactivity was increased twofold. In contrast to thyrocalcitonin, addition of human and salmon calcitonin peptides as well as the thyroid hormones T 3 and T 4 had no effect on adult cartilage cell proliferation or GAG synthesis. The data reported here suggest the existence of a thyroid‐derived factor, independent of calcitonin peptides or thyroid hormones, which stimulates adult articular chondrocyte metabolism.