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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1990-3-21
pubmed:abstractText
The contribution under various nutritional regimens of several amino acids and lactate to gluconeogenesis was estimated by measuring the glucose formation from 14C-labeled substrates. Isolated rat hepatocytes were incubated for 60 min in a Krebs-Ringer bicarbonate buffer pH 7.4 containing lactate, pyruvate and all the amino acids at concentrations similar to their physiological levels found in rat plasma, with one precursor labeled in each flask. In all conditions, lactate was the major glucose precursor, providing over 60% of the glucose formed. Glutamine and alanine were the major amino acid precursors of glucose, contributing 9.8% and 10.6% of the glucose formed, respectively, in hepatocytes isolated from starved rats. Serine, glycine and threonine also contributed to gluconeogenesis in the starved liver cells at 2.6, 2.1 and 3.8%, respectively, of the glucose formed. The rate of glucose formation from the isolated hepatocytes of the starved rats and those fed either high protein or high fat was higher than that from rats fed a nonpurified diet.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0022-3166
pubmed:author
pubmed:issnType
Print
pubmed:volume
120
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
116-22
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Contribution of several amino acids and lactate to gluconeogenesis in hepatocytes isolated from rats fed various diets.
pubmed:affiliation
Department of Physiological Science, Veterinary Medicine School, University of California, Davis 95616.
pubmed:publicationType
Journal Article