L-Serine Uptake by Trout (Salmo Trutta) Red Blood Cells: the Effect of Isoproterenol | Zendy

M.A. Gallardo | Zendy; José Giner Planas | Zendy; Julio Nemorio Martínez-Sánchez | Zendy

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L-Serine Uptake by Trout (Salmo Trutta) Red Blood Cells: the Effect of Isoproterenol

Author(s) -

M.A. Gallardo,

José Giner Planas,

Julio Nemorio Martínez-Sánchez

Publication year - 1992

Publication title -

journal of experimental biology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.367

H-Index - 185

eISSN - 1477-9145

pISSN - 0022-0949

DOI - 10.1242/jeb.163.1.85

Subject(s) - serine , sodium , chemistry , salmo , trout , intracellular , endocrinology , agonist , medicine , biology , biochemistry , phosphorylation , fish <actinopterygii> , receptor , fishery , organic chemistry

We studied the uptake of L-serine by trout red blood cells and the effect of a μ-adrenergic agonist (isoproterenol) on this process. The results obtained indicate that L-serine is taken up by these cells by means of a concentrative process. The uptake seems to be mediated both by a sodium-dependent process and by a sodium-independent process. The sodium-dependent uptake is mediated by a transport system that probably belongs to the ASC system family. Isoproterenol exerts an inhibitory effect on L-serine uptake. This effect is dose-dependent. It is proposed that the inhibitory effect of isoproterenol is mediated by a rise in the intracellular sodium concentration and/or changes in cell volume.

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