Linked Life Data

12600682

Source:http://linkedlifedata.com/resource/pubmed/id/12600682

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2003-2-25
pubmed:abstractText
The photosynthetic strain Z of Euglena gracilis is more susceptible to cadmium chloride (Cd) than the non-photosynthetic strain SMZ. We investigated the correlation of intracellular reactive oxygen species (ROS) levels with Cd-induced cellular damage. Flow cytometry with dihydrorhodamine 123 showed that strain Z generated higher levels of ROS, probably H(2)O(2) and/or ONOO(-), than strain SMZ, and that this difference between the two strains became more pronounced with increasing Cd dose. The levels of ROS increased at cytotoxic concentrations of Cd, at over 10 microM Cd for Z and 50 microM Cd for SMZ. These results show an association of Cd cytotoxicity with ROS generation. Considering that strain SMZ is non-photosynthetic, the higher levels of ROS in strain Z might be due to blockage of photosynthetic electron flow by Cd. Using terminal deoxyribonucleotidyl transferase-mediated dUTP nick end-labeling analysis in combination with 4',6-diamidino-2-phenylindole, dihydrochloride staining, we observed DNA breaks in the mitochondria of both strains after Cd exposure. The results suggest that the mitochondrion is the primary target organelle of Cd in E. gracilis cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1532-0456
pubmed:author
pubmed:issnType
Print
pubmed:volume
134
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
227-34
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Cadmium-dependent generation of reactive oxygen species and mitochondrial DNA breaks in photosynthetic and non-photosynthetic strains of Euglena gracilis.
pubmed:affiliation
Division of Life Sciences, Graduate School of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido 041-8611, Japan. m-wata@fish.hokudai.ac.jp
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't