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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1-2
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pubmed:dateCreated |
1997-6-12
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pubmed:abstractText |
The synthesis and purification of [13C2]p-hydroxyphenyllactic acid from [13C2]p-hydroxyphenylpyruvic acid, the characterization of tert.-butyldimethylsilyl-derivatized tyrosine, p-hydroxyphenylpyruvic acid and p-hydroxyphenyllactic acid, and an isotope-dilution assay for these substances in normal human plasma using gas chromatography-mass spectrometry (GC-MS) are described. Using this method plasma p-hydroxyphenylpyruvate, p-hydroxyphenyllactate and tyrosine levels of 68 +/- 42 ng/ml, 118 +/- 45 ng/ml and 16.6 +/- 6.3 micrograms/ml, respectively, were found in 9 normal adults. Isotope-dilution assays are sensitive enough to determine tyrosine, p-hydroxyphenylpyruvate and p-hydroxyphenyllactate content in normal subjects, and may be useful for studying disorders of tyrosine metabolism, including inborn errors of metabolism, liver disease and ascorbic acid deficiencies.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/4-hydroxyphenyllactic acid,
http://linkedlifedata.com/resource/pubmed/chemical/4-hydroxyphenylpyruvic acid,
http://linkedlifedata.com/resource/pubmed/chemical/Carbon Isotopes,
http://linkedlifedata.com/resource/pubmed/chemical/Deuterium,
http://linkedlifedata.com/resource/pubmed/chemical/Phenylpropionates,
http://linkedlifedata.com/resource/pubmed/chemical/Phenylpyruvic Acids,
http://linkedlifedata.com/resource/pubmed/chemical/Tyrosine
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pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
1387-2273
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
7
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pubmed:volume |
690
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1-6
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:9106023-Carbon Isotopes,
pubmed-meshheading:9106023-Deuterium,
pubmed-meshheading:9106023-Gas Chromatography-Mass Spectrometry,
pubmed-meshheading:9106023-Humans,
pubmed-meshheading:9106023-Indicator Dilution Techniques,
pubmed-meshheading:9106023-Phenylpropionates,
pubmed-meshheading:9106023-Phenylpyruvic Acids,
pubmed-meshheading:9106023-Tyrosine
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pubmed:year |
1997
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pubmed:articleTitle |
Determination of p-hydroxyphenylpyruvate, p-hydroxyphenyllactate and tyrosine in normal human plasma by gas chromatography-mass spectrometry isotope-dilution assay.
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pubmed:affiliation |
University of Colorado Health Sciences Center, Denver 80220, USA.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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