Linked Life Data

3092047

Source:http://linkedlifedata.com/resource/pubmed/id/3092047

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1986-10-23
pubmed:abstractText
When bloodstream forms of Trypanosoma brucei brucei were exposed to exogenous putrescine for 24 h during in vitro culture, the rate of O2 consumption increased significantly in a concentration-related and time-dependent manner. Trypanosomes cultured with 100 microM DL-alpha-difluoromethylornithine (DFMO), an irreversible inhibitor of ornithine decarboxylase, were depleted of intracellular putrescine, and the rate of O2 consumption decreased by more than 50%. This effect could be abrogated if 100 microM putrescine was also present. A similar pattern was observed in trypanosomes harvested from rats after 36 h of DFMO treatment. If such trypanosomes were placed in culture for 2 h with 100 microM putrescine, the rate of O2 consumption returned to that of controls. When an intraperitoneal injection of putrescine was given to infected rats 18 h after commencement of DFMO treatment, rates of O2 consumption in the trypanosomes were found to return to control values. The addition of putrescine, spermidine or Mg2+ did not affect rate of O2 consumption in enriched mitochondrial preparations. However, when putrescine was present throughout the preparation of mitochondrial fractions, there was an increase of 23% in O2 uptake, which was 23% higher than in the controls. Putrescine may modulate trypanosomal respiration by stabilizing mitochondrial membranes.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0166-6851
pubmed:author
pubmed:issnType
Print
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
165-71
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Effect of putrescine on the respiration of Trypanosoma brucei brucei.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.