Linked Life Data

9597768

Source:http://linkedlifedata.com/resource/pubmed/id/9597768

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1998-6-4
pubmed:abstractText
Substrate oxidation by various organs in animals as well as in humans is usually studied by experiments in which radioactively labeled substrates are used and the production of 14CO2 is measured. In vivo, substrate oxidation by an organ has, up to now, not been determined by means of stable isotopes. Problems in the determination of the concentration of 13CO2 in blood may have impeded the use of 13C-labeled substrates. For the determination of 13CO2 concentration in blood a direct method for the determination of total CO2 concentration in blood was combined with the determination of the isotope ratio (13C/12C) of CO2 by isotope ratio mass spectrometry. The intra-assay relative standard deviation of the CO2 concentration (mean: 19.26 mmol l-1; n = 7) was 0.8%. The inter-assay relative standard deviation of the CO2 concentration in solutions of a weighed amount of Na2CO3 determined over a 5 year period was 0.64% (mean: 21.99 mmol l-1; n = 22). The intra-assay relative standard deviation of 13C in CO2 was 0.03% (mean 13C/12C: 0.0111557; n = 5). From the 13CO2 concentration in arterial and venous blood, substrate oxidation by various organs can be calculated. As an illustration, the determination of myocardial glucose oxidation in lambs, both at rest and during exercise, is described.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1076-5174
pubmed:author
pubmed:issnType
Print
pubmed:volume
33
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
328-33
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Determination of organ substrate oxidation in vivo by measurement of 13CO2 concentration in blood.
pubmed:affiliation
Beatrix Children's Hospital, Division of Pediatric Cardiology, University of Groningen, The Netherlands. g.c.m.beaufort@thorax.azg.nl
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't