Effect of vasotocin on plasma GH, free fatty acids and glucose in coho salmon (Oncorhynchus kisutch).
Coho salmon fry were injected intraperitoneally with 50 mul of saline containing either 15 or 150 mU arginine vasotocin. Blood was collected 30 min and 120 min post-injection for estimations of hematocrit, plasma glucose, free fatty acids and growth hormone. Vasotocin injections of 150 mU, unlike those of 15 mU, caused a lowering of the blood hematocrit. Plasma levels of glucose, free fatty acids and growth hormone increased following injections of 15 mU vasotocin. The higher concentration of vasotocin (150 mU) decreased plasma levels of glucose (at 120 min post-injection), free fatty acids (at 30 min post-injection) and growth hormone (at 120 min post-injection). It thus appears that vasotocin is an antidiuretic hormone in coho salmon and it is suggested that glucogenic and lipolytic effect of vasotocin are mediated via growth hormone.
D000818:Animals; D001786:Blood Glucose / Q000032:analysis*; D005230:Fatty Acids, Nonesterified / Q000097:blood*; D013006:Growth Hormone / Q000097:blood*; D006400:Hematocrit; D012474:Salmon / Q000097:blood* / Q000502:physiology; D014668:Vasotocin / Q000494:pharmacology*; D014882:Water-Electrolyte Balance / Q000187:drug effects
D001786:Blood Glucose; D005230:Fatty Acids, Nonesterified; D013006:Growth Hormone; D014668:Vasotocin