Estimation of Synthesis Rates of Plasma Proteins, Studied with Amino Acid Solutions with Different BCAA Content, Using the 15N-Tracer Technique

2015 ◽  
pp. 142-152
Author(s):  
W. Hartig ◽  
R. Matkowitz ◽  
R. Ritter ◽  
D. Wirth
Keyword(s):  
Amino Acid ◽  
Plasma Proteins ◽  
15N Tracer ◽  
Acid Solutions ◽  
Tracer Technique ◽  
Amino Acid Solutions ◽  
15N Tracer Technique

INTRAVENOUS NUTRITION WITH AMINO ACID SOLUTIONS IN PATIENTS WITH CHRONIC URAEMIA

1972 ◽  
Vol 191 (4) ◽  
pp. 359-367
Author(s):  
J. Bergström ◽  
H. Bucht ◽  
P. Fürst ◽  
E. Hultman ◽  
B. Josephson ◽  
...  
Keyword(s):  
Amino Acid ◽  
Acid Solutions ◽  
Chronic Uraemia ◽  
Amino Acid Solutions ◽  
Intravenous Nutrition

scholarly journals An aquatic vertebrate can use amino acids from environmental water

2016 ◽  
Vol 283 (1839) ◽  
pp. 20160996 ◽  
Author(s):  
Noboru Katayama ◽  
Kobayashi Makoto ◽  
Osamu Kishida
Keyword(s):  
Amino Acids ◽  
Organic Matter ◽  
Amino Acid ◽  
Dissolved Organic Matter ◽  
Larval Growth ◽  
Environmental Water ◽  
Acid Solutions ◽  
Aquatic Vertebrates ◽  
Amino Acid Solutions ◽  
Salamander Larvae

Conventional food-web theory assumes that nutrients from dissolved organic matter are transferred to aquatic vertebrates via long nutrient pathways involving multiple eukaryotic species as intermediary nutrient transporters. Here, using larvae of the salamander Hynobius retardatus as a model system, we provide experimental evidence of a shortcut nutrient pathway by showing that H. retardatus larvae can use dissolved amino acids for their growth without eukaryotic mediation. First, to explore which amino acids can promote larval growth, we kept individual salamander larvae in one of eight different high-concentration amino acid solutions, or in control water from which all other eukaryotic organisms had been removed. We thus identified five amino acids (lysine, threonine, serine, phenylalanine, and tyrosine) as having the potential to promote larval growth. Next, using 15 N-labelled amino acid solutions, we demonstrated that nitrogen from dissolved amino acids was found in larval tissues. These results suggest that salamander larvae can take up dissolved amino acids from environmental water to use as an energy source or a growth-promoting factor. Thus, aquatic vertebrates as well as aquatic invertebrates may be able to use dissolved organic matter as a nutrient source.

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