Expression of transport proteins in the rete mirabile of european silver and yellow eel.

ABSTRACT:

Background

In physoclist fishes filling of the swimbladder requires acid secretion of gas gland cells to switch on the Root effect and subsequent countercurrent concentration of the initial gas partial pressure increase by back-diffusion of gas molecules in the rete mirabile. It is generally assumed that the rete mirabile functions as a passive exchanger, but a detailed analysis of lactate and water movements in the rete mirabile of the eel revealed that lactate is diffusing back in the rete. In the present study we therefore test the hypothesis that expression of transport proteins in rete capillaries allows for back-diffusion of ions and metabolites, which would support the countercurrent concentrating capacity of the rete mirabile. It is also assumed that in silver eels, the mig

SUBMITTER: Schneebauer G 

PROVIDER: S-EPMC8638102 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature