Effect of vagotomy on plasma levels of growth hormone, free fatty acids and glucose in the pigeon.
Plasma levels of growth hormone (GH), free fatty acids (FFA) and glucose were measured in vagotomized (VgX) and sham-operated (VgS) control pigeons. In VgX pigeons, GH level was significantly lower whereas FFA and glucose levels were higher than in VgS pigeons. The depression in GH level in VgX pigeons has been attributed to the significantly high levels of norepinephrine (NE) and corticosterone in these Birds. The higher plasma FFA concentration in VgX pigeons was therefore due to adipokinetic hormonal action other than of GH. It has been suggested that the adrenocorticotrophic hormone (ACTH) and/or NE could have produced the increase in plasma FFA in VgX pigeons. The pronounced hyperglycemia seen in VgX pigeons has been attributed to catecholamine action in the absence of the vagal tone.
John
T M
TM
Pilo
B
B
George
J C
JC
Scanes
C G
CG
D000818:Animals; D001786:Blood Glucose / Q000378:metabolism*; D010856:Columbidae / Q000378:metabolism*; D005230:Fatty Acids, Nonesterified / Q000097:blood*; D013006:Growth Hormone / Q000097:blood*; D011863:Radioimmunoassay; D014628:Vagotomy
D001786:Blood Glucose; D005230:Fatty Acids, Nonesterified; D013006:Growth Hormone