..., a process that is poorly explored, especially in endotherms. Here, we examined the mitochondrial metabolism and proteomic profile of red blood cells in relation to body size and cellular energetics in nestling shearwaters ( Calonectris diomedea ) developing at different natural temperatures. We found...

... in rainbow trout. Splenic contraction and the subsequent red blood cell release accounts for the initial increase in Hb concentration in the blood, whereas EPO action probably accounts for the later increases in hemoglobin concentration in the blood. Our data indicate that fish and mammalian erythropoietic...

...M. A. Gallardo; P. Canals; J. L. Albi; J. Pesquero; J. Sanchez ABSTRACT The present study shows that the capacity of trout ( Salmo trutta ) red blood cells (RBCs) and freshly isolated hepatocytes to take up short-chain neutral amino acids changes according to a seasonal pattern. Maximal amino acid...

...Heman Chao; Peter L. Davies; John F. Carpenter ABSTRACT Antifreeze protein (AFP) types I, II and III were tested for their ability to protect red blood cells from lysis during warming, after cryopreservation in hydroxyethyl starch. All three types reduced hemolysis to 25 % of control values...

...Frank B. Jensen; Jesper Brahm ABSTRACT The continuous flow tube method was used to investigate the kinetics of chloride transport, and its potential oxygenation-dependency, in red blood cells (RBCs) from four teleost fish species and man. A significant interspecific variation in Cl − transport...

...Patrick J. Walsh; Chris M. Wood; Steve F. Perry; Serge Thomas ABSTRACT Although urea transport is receiving increased attention in mammalian systems, very little is known about urea transport in fish tissues. This study examined mechanisms of urea transport in red blood cells and hepatocytes from...

...J. Pesquero; T. Roig; J. Bermudez; J. Sanchez ABSTRACT The present study investigates energy metabolism by trout red blood cells. It is shown that they are able to use pyruvate at physiological concentrations as an aerobic source of energy. Moreover, microcalorimetric data suggest that trout...

...M. Berenbrink; C. R. Bridges ABSTRACT The relationship between intracellular pH (pHi) and extracellular pH (pHe) was investigated in red blood cells from the Atlantic cod ( Gadus morhua ) in carbon dioxide/bicarbonate-buffered salines. In summer animals (August/September), similar transmembrane...

...M. Berenbrink; C. R. Bridges ABSTRACT The effects of catecholamines on the pH and the cellular ion and water content were investigated in red blood cells from the Atlantic cod ( Gadus morhua ). Noradrenaline induced a rapid decrease in the extracellular pH (pHe) of red blood cells suspended in a CO...

...Frank B. Jensen ABSTRACT The regulation of K + transport across the red blood cell (RBC) membrane by haemoglobin (Hb) conformation was studied in carp, and the K + transport mechanisms were identified. When a large proportion of Hb in the R quaternary structure was secured by oxygenation of blood...

...M. A. Gallardo; J. Planas; J. Sánchez ABSTRACT We studied the uptake of L-serine by trout red blood cells and the effect of a -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...

...Chris M. Wood; Patrick J. Walsh; Serge Thomas; Steve F. Perry ABSTRACT Metabolic responses (rates of CO 2 production from 14 C-labelled glucose or lactate, and total O 2 consumption) of red blood cells were monitored in rainbow trout ( Oncorhynchus mykiss ) at rest and during 12 h of recovery from...

...D. Nguyen Phu; K. Yamaguchi; P. Scheid; J. Piiper ABSTRACT The specific conductance (G) for O 2 transfer by red blood cells (RBCs) of chicken and muscovy duck was measured using the experimental (stopped-flow) and analytical techniques (RBC model) previously applied to human RBC ( Yamaguchi, Nguyen...