家禽对跑步机运动的肾上腺皮质和髓质反应。

Adrenocortical and adrenomedullary responses of fowl to treadmill exercise.

作者信息

Rees A, Hall T R, Harvey S

出版信息

Gen Comp Endocrinol. 1984 Sep;55(3):488-92. doi: 10.1016/0016-6480(84)90022-4.

Abstract

Adrenomedullary and adrenocortical responses of 40-day-old cockerels to treadmill exercise (0.4 km/hr, 0 degrees incline) were determined. Plasma concentrations of adrenaline were increased above both resting and control levels (P less than 0.001) after 30 min exercise and continued to increase (P less than 0.01) until the cessation of exercise. Plasma noradrenaline and dopamine levels were increased after 60 min of exercise (P less than 0.01 and 0.05, respectively). The adrenaline component of the plasma catecholamine response increased significantly above that of noradrenaline (P less than 0.001). Plasma corticosterone levels were also increased (P less than 0.001) during exercise and were closely correlated with plasma adrenaline concentrations. Exercise depleted (P less than 0.01) adrenal stores of adrenaline, which were inversely proportional to plasma adrenaline concentrations (P less than 0.001). Neither adrenal noradrenaline nor dopamine were significantly correlated with their plasma levels. These results suggest that adrenocortical (corticosterone) and adrenomedullary (adrenaline) responses during exercise may occur in response to similar stimuli or may be interrelated.

摘要

测定了40日龄公鸡对跑步机运动（0.4公里/小时，坡度为0度）的肾上腺髓质和肾上腺皮质反应。运动30分钟后，血浆肾上腺素浓度高于静息水平和对照水平（P<0.001），并持续升高（P<0.01）直至运动停止。运动60分钟后，血浆去甲肾上腺素和多巴胺水平升高（分别为P<0.01和P<0.05）。血浆儿茶酚胺反应中的肾上腺素成分显著高于去甲肾上腺素（P<0.001）。运动期间血浆皮质酮水平也升高（P<0.001），且与血浆肾上腺素浓度密切相关。运动使肾上腺肾上腺素储备减少（P<0.01），肾上腺肾上腺素储备与血浆肾上腺素浓度呈负相关（P<0.001）。肾上腺去甲肾上腺素和多巴胺与其血浆水平均无显著相关性。这些结果表明，运动期间肾上腺皮质（皮质酮）和肾上腺髓质（肾上腺素）反应可能是对相似刺激的反应，或者可能相互关联。