Hepatic amino acid transport primary to the urea cycle in regulation of biologic neutrality
Article Abstract:
The study of acidosis and alkalosis in rats suggests that the body's pH is not regulated by the liver-ornithine cycle because a low pH checks the formation of ammonium ions but does not inhibit the entry of these ions into the ornithine cycle. Since the concentration of glutamine in the hepatic vein is unaffected, it has been suggested that acidosis and alkalosis affect only those amino acids which are transported by Na+ dependent systems. Thus, the body's pH may be regulated by the kidneys which excrete more hydrogen ions from the amino acids when the liver produces less urea.
Publication Name: Nutrition Reviews
Subject: Food/cooking/nutrition
ISSN: 0029-6643
Year: 1995
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Riboflavin can protect tissue from oxidative injury
Article Abstract:
High riboflavin levels may offer protection against damage caused by oxidative forms of hemeproteins. Riboflavin has been shown to reduce the high-valence hemeproteins associated with reoxygenation injury. It is worth determining whether the effects of riboflavin reported in recent experiments have nutritional as well as pharmacological implications. In order to answer these questions greater economic support for riboflavin research will be needed.
Publication Name: Nutrition Reviews
Subject: Food/cooking/nutrition
ISSN: 0029-6643
Year: 1993
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Ontogeny of transport systems for cationic amino acids in the placenta
Article Abstract:
The overall activity levels of various transporters in both the microvillous and the basal membranes of the syncytiotrophoblast directly affect the levels of in vitro amino acids, which are vital ingredients for infant nutrition. Amino acids are concentratively served to the fetus by the placenta, which fulfills the role of a functional boundary between maternal and fetal circulations.
Publication Name: Nutrition Reviews
Subject: Food/cooking/nutrition
ISSN: 0029-6643
Year: 1995
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