Determining the functional role of waterborne amino acid uptake in hagfish nutrition: a constitutive pathway when fasting or a supplementary pathway when feeding?

The evidence bearing on the participation of adenosine triphosphate (ATP) in transport reactions is reviewed. The connection may take the form of a strict quantitative relationship as observed in potassium uptake by red blood cells or as in amino acid uptake by slices of rat brain cortex. There may also be a qualitative relationship such as that observed in studies of amino acid uptake by Ehrlich ascites carcinoma cells. In other tissues (e.g. slices of the Ehrlich carcinoma) amino acid uptake may only have an uncertain relationship to the ATP content of the tissue. Some of the schemes which have been put forward to account for the involvement of ATP are discussed.

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Role of prolactin in amino acid uptake by the lactating mammary gland of the rat

FEBS Letters ◽

10.1016/0014-5793(81)80253-0 ◽

1981 ◽

Vol 126 (2) ◽

pp. 250-252 ◽

Cited By ~ 30

Author(s):

José Viña ◽

Inmaculada R. Puertes ◽

Guillermo T. Saez ◽

Juan R. Viña

Keyword(s):

Mammary Gland ◽

Amino Acid ◽

Amino Acid Uptake ◽

Acid Uptake ◽

Lactating Mammary Gland

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Regulation of contraction-stimulated system a amino acid uptake in skeletal muscle: Role of vicinal sulfhydryls

Metabolism ◽

10.1016/0026-0495(93)90100-3 ◽

1993 ◽

Vol 42 (4) ◽

pp. 440-445 ◽

Cited By ~ 3

Author(s):

Erik J. Henriksen ◽

Madeline C. Schneider ◽

Leslie S. Ritter

Keyword(s):

Skeletal Muscle ◽

Amino Acid ◽

Amino Acid Uptake ◽

Acid Uptake ◽

System A ◽

Regulation Of Contraction

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Effect of starvation and refeeding on amino acid uptake by mammary gland of the lactating rat. Role of ketone bodies

Biochemical Journal ◽

10.1042/bj2160343 ◽

1983 ◽

Vol 216 (2) ◽

pp. 343-347 ◽

Cited By ~ 9

Author(s):

J R Viña ◽

I R Puertes ◽

J B Montoro ◽

J Viña

Keyword(s):

Amino Acids ◽

Mammary Gland ◽

Amino Acid ◽

Ketone Bodies ◽

Total Concentration ◽

Amino Acid Uptake ◽

Acid Uptake ◽

Arterial Concentration ◽

Blood Ketone Bodies

Arteriovenous differences of amino acids across the mammary glands of lactating rats are diminished when the rats are starved for 24 h. When 24 h-starved rats were refed for 2 1/2 h, the arteriovenous differences of amino acids returned to values similar to those found in well-fed rats. In order to find a possible explanation for these rapid changes, we tested the effect of ketone bodies on amino acid uptake by the gland. At 5 min after injection of acetoacetate to fed rats, when the total concentration of ketone bodies in blood was similar to that found in starvation, the uptake of amino acids by the mammary gland was similar to that found after starvation, i.e. lower than in fed rats. However, 30 min after administration of acetoacetate, when the arterial concentration of ketone bodies had returned to values similar to those in fed rats, the arteriovenous differences of amino acids were similar to those found in fed rats. We conclude that the changes in blood ketone bodies may be responsible, at least in part, for the changes in amino acid uptake that occur in starvation and in the starvation—refeeding transition.

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Role of ATP on the initial rate of amino acid uptake in ehrlich ascites cells

Biochimica et Biophysica Acta (BBA) - Biomembranes ◽

10.1016/0005-2736(74)90272-7 ◽

1974 ◽

Vol 356 (3) ◽

pp. 319-330 ◽

Cited By ~ 21

Author(s):

R.M. Johnstone

Keyword(s):

Amino Acid ◽

Initial Rate ◽

Amino Acid Uptake ◽

Acid Uptake ◽

Ehrlich Ascites ◽

Ehrlich Ascites Cells

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