Linked Life Data

8093974

Source:http://linkedlifedata.com/resource/pubmed/id/8093974

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1993-3-3
pubmed:abstractText
Detailed study of the effects of oxygen on the carbohydrate metabolism of Giardia lamblia revealed that low concentrations of oxygen (< 0.25 microM) produced profound alterations in the carbon balance of this organism. Although this concentration of oxygen could not be detected by mass spectrometry, a marked stimulation of ethanol production was observed. Associated with this was an inhibition of alanine production and oxidation of the intracellular NAD(P)H pool. Higher concentrations of oxygen inhibited ethanol production and further reduced levels of alanine. These results suggest that this stimulation is due to changes in carbon flux. Analysis of cell and medium hydrolysates after the growth of trophozoites in [U-14C]glucose suggests that G. lamblia does not synthesise detectable levels of labelled amino acids, except alanine and to a lesser extent valine, from this sugar. Trophozoites of G. lamblia have both glutamate dehydrogenase and alanine aminotransferase activity. As glutamate is taken up from the medium, it is suggested that glutamate dehydrogenase and alanine aminotransferase cooperate to convert pyruvate to alanine, with the concomitant oxidation of NAD(P)H.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0166-6851
pubmed:author
pubmed:issnType
Print
pubmed:volume
57
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
65-71
pubmed:dateRevised
2010-8-25
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
The effects of oxygen on fermentation in Giardia lamblia.
pubmed:affiliation
Microbiology Group PABIO, University of Wales College of Cardiff, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't