Transforming growth factor-beta-mediated proliferation of renal tubular epithelial cells involves pertussis toxin-sensitive G protein-and protein kinase C-dependent pathways

Salmon calcitonin (5 micrograms/kg body wt) was administered in an elasmobranch, Dasyatis akajei, to investigate the effects upon plasma calcium and inorganic phosphate. The hormone produced hypocalcemia and hyperphosphatemia in the stingray. It is concluded that calcitonin may have a role in calcium homeostasis by a mechanism different from that on bones.