Le Bras Y M
Gen Comp Endocrinol. 1984 Sep;55(3):472-9. doi: 10.1016/0016-6480(84)90020-0.
The amounts of catecholamine (dopamine, adrenaline, and noradrenaline) in the brain, heart, and plasma of the eel (Anguilla anguilla L.) during a 24-hr period and at three different times of year were determined by using a radioenzymatic method. Seasonal variations of catecholamine average values were found to be different when considering catecholamine levels in the same tissue (one exception: heart levels in May) or the same amine in different tissues. Circadian rhythms of catecholamine levels were evident only in the brain; the maximum amount generally occurred during the light phase. No correlation could be found between the 24-hr variations in the different tissues. The most important variations were phased with the dark-light cycle but were also dependent on the annual cycle.
采用放射酶法测定了欧洲鳗鲡（Anguilla anguilla L.）在24小时期间以及一年中三个不同时间点大脑、心脏和血浆中的儿茶酚胺（多巴胺、肾上腺素和去甲肾上腺素）含量。当考虑同一组织中的儿茶酚胺水平（一个例外：5月心脏中的水平）或不同组织中同一胺类时，发现儿茶酚胺平均值的季节性变化有所不同。儿茶酚胺水平的昼夜节律仅在大脑中明显；最大值通常出现在光照阶段。不同组织中24小时的变化之间未发现相关性。最重要的变化与明暗周期同步，但也依赖于年度周期。
