A study of plasma free amino acid levels. VIII. The relationship between plasma amino acid levels and I.Q. test performance

Metabolism ◽  
1973 ◽  
Vol 22 (11) ◽  
pp. 1437-1441 ◽  
Author(s):  
Marvin D. Armstrong ◽  
Robert B. McCall ◽  
Uwe Stave
1969 ◽  
Vol 47 (4) ◽  
pp. 392-395 ◽  
Author(s):  
John Boomgaardt ◽  
Bruce E. McDonald

Comparison of free amino acid levels in plasma (PAA) at 8, 12, 16, 20, and 24 h postprandial in pigs, rats, and chickens revealed differences between mammalian and avian species in the fasting metabolism of amino acids. PAA patterns during fasting were more variable for chickens than for either rats or pigs. There was a marked increase in the plasma lysine level in chickens (27.5 to 115.8 μg/ml) as fasting was extended from 8 to 24 h. Plasma lysine levels in pigs and rats, by contrast, increased from 14.2 to 19.5 μg/ml and 39.8 to 63.7 μg/ml respectively during the same period of fast. Plasma threonine and methionine levels also increased in chickens during fasting whereas the levels of these amino acids in pigs and rats decreased or remained unchanged during a 24-h fast. Extending the period of fast to 36 h in chickens and 48 h in pigs resulted in further small increases in the plasma lysine concentration.


2007 ◽  
Vol 38 (11) ◽  
pp. 1198-1204 ◽  
Author(s):  
Wilson Pinto ◽  
Cláudia Aragão ◽  
Florbela Soares ◽  
Maria Teresa Dinis ◽  
Luís E C Conceição

1977 ◽  
Vol 27 ◽  
pp. 44
Author(s):  
Shiro Hisada ◽  
Hiromi Tsushima ◽  
Toshio Kamiya

2009 ◽  
Vol 57 (3) ◽  
pp. 1013-1021 ◽  
Author(s):  
Tanya Y. Curtis ◽  
Nira Muttucumaru ◽  
Peter R. Shewry ◽  
Martin A. J. Parry ◽  
Stephen J. Powers ◽  
...  

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