Direct raises in blood Ca levels by infusing a high-Ca solution into the blood stream accelerate the secretion of calcitonin from the ultimobranchial gland in eels.
In eels, a CaCl(2) solution was infused into the pneumatic duct vein. Plasma Ca levels were significantly increased during 3 hr and were followed by significant raises in plasma calcitonin levels. These results strongly suggest that, in eels, direct raises in blood Ca levels by infusion of a high-Ca solution via blood vessels can accelerate the secretion of calcitonin from the ultimobranchial gland.
D000222:Adaptation, Physiological; D000811:Anguilla / Q000378:metabolism*; D000818:Animals; D002116:Calcitonin / Q000097:blood / Q000378:metabolism*; D002118:Calcium / Q000008:administration & dosage / Q000097:blood* / Q000494:pharmacology*; D005786:Gene Expression Regulation; D006400:Hematocrit; D012964:Sodium / Q000097:blood; D012996:Solutions / Q000494:pharmacology; D014460:Ultimobranchial Body / Q000187:drug effects / Q000378:metabolism*
D012996:Solutions; D002116:Calcitonin; D012964:Sodium; D002118:Calcium