title: Free amino acids in plasma and erythrocytes during and after cardiopulmonary by-pass in open-heart surgery.
abstract: The concentrations in plasma and erythrocytes of free amino acids before, during and after cardiopulmonary by-pass have been determined. During by-pass and the early postoperative period the total alpha-amino nitrogen decreased, mainly because of changes in glucogenic amino acids; ketogenic amino acids, on the other hand, increased. The phenylalanine/tyrosine ratio was markedly increased in all cases.
mesh_terms: D000596:Amino Acids / Q000097:blood*; D000601:Amino Acids, Essential / Q000097:blood; D006348:Cardiac Surgical Procedures; D002315:Cardiopulmonary Bypass; D004912:Erythrocytes / Q000378:metabolism*; D005112:Extracorporeal Circulation; D006801:Humans; D010649:Phenylalanine / Q000097:blood; D014443:Tyrosine / Q000097:blood
chemical_list: D000596:Amino Acids; D000601:Amino Acids, Essential; D014443:Tyrosine; D010649:Phenylalanine