Soengas J L, Fuentes J, Andrés M D, Aldegunde M
Departamento de Fisioloxía, Facultade de Bioloxía, Universidade de Santiago de Compostela, Spain.
Rev Esp Fisiol. 1994 Dec;50(4):219-27.
The levels of glycogen and glucose, and the activities of several key enzymes of glycogenolysis, glycolysis, gluconeogenesis and the pentose phosphate shunt were assessed in kidneys of rainbow trout (Oncorhynchus mykiss) of two sizes (80 and 140 g) after transfer to seawater (28 p.p.t.) during 7 days. The results indicated changes, mainly size-independent, in kidney carbohydrate metabolism during transfer of rainbow trout to seawater. An enhanced glycogenolysis and a concomitant increase in gluconeogenic enzyme activity were clearly observed in kidneys of both sizes of animals during transfer to seawater. Changes are suggested to be related to the known role of kidney as a glucose producer tissue thus satisfying, at least in part, the high energetic requirements of the osmoregulatory work performed by other tissues using glucose as fuel, such as the gills, during adaptation to seawater.
在将两种大小（80克和140克）的虹鳟（Oncorhynchus mykiss）转移到海水中（28‰）7天后，评估了其肾脏中糖原和葡萄糖的水平，以及糖原分解、糖酵解、糖异生和磷酸戊糖途径中几种关键酶的活性。结果表明，虹鳟转移到海水中时，肾脏碳水化合物代谢发生了变化，主要与大小无关。在转移到海水中的过程中，两种大小的动物肾脏中均明显观察到糖原分解增强，同时糖异生酶活性增加。这些变化被认为与肾脏作为葡萄糖产生组织的已知作用有关，从而至少部分满足了其他组织（如鳃）在适应海水过程中以葡萄糖为燃料进行渗透调节工作的高能量需求。
