蛙肾中无机硫酸盐的重吸收：转运机制的饱和

Reabsorption of inorganic sulfate in the frog kidney: saturation of transport mechanism.

Frick A, Toygar A

Physiologisches Institut der Universität München, FRG.

Comp Biochem Physiol A Comp Physiol. 1988;90(3):471-3. doi: 10.1016/0300-9629(88)90222-8.

Abstract

Clearance experiments were performed to study reabsorption of inorganic sulfate (SO4) in the frog kidney. 2. During stepwise elevation of the SO4 concentration in plasma by i.v. sulfate administration (SO4 titration), the absolute reabsorption of SO4 did not increase but kept constant during mild SO4 loading. 3. The maximal reabsorptive capacity for SO4 (TmSO4) was about 0.37 mumol/30 min in this species. 4. The present results do not indicate renal net secretion of SO4 in the frog.

摘要

进行清除率实验以研究蛙肾中无机硫酸盐（SO4）的重吸收。2. 通过静脉注射硫酸盐（SO4滴定）逐步提高血浆中SO4浓度时，在轻度SO4负荷期间，SO4的绝对重吸收并未增加而是保持恒定。3. 该物种中SO4的最大重吸收能力（TmSO4）约为0.37μmol/30分钟。4. 目前的结果并未表明蛙肾中有SO4的净分泌。