Linked Life Data

8864571

Source:http://linkedlifedata.com/resource/pubmed/id/8864571

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1996-12-16
pubmed:abstractText
In this study we have monitored the change of intracellular Ca2+ concentrations in the cytosol ([Ca2+]c) and the mitochondria ([Ca2+]m) of single bovine endothelial cells following treatment with bradykinin (BK). Using laser scanning confocal microscopy, we have found that the Ca2+ indicator, Fluo-3, is compartmentalized in the mitochondria of endothelial cells loaded with Fluo-3/AM. After BK stimulation, the pattern of Ca2+ increase in the cytosol is different from that in the mitochondria. The amplitude of the Ca2+ rise in the mitochondria is higher than that in the cytosol. Further analysis using rapid scanning measurements indicates that the [Ca2+]c increase is very fast after BK addition and reaches a maxima level within 400 ms. In contrast, the [Ca2+]m increase appears to be biphasic with an initial rapid increase (concomitant with the [Ca2+]c increase) followed by a slower [Ca2+]m increase before reaching a maximal level (within 5 s of BK treatment). The differential Ca2+ signaling pattern between the cytosol and the mitochondria suggests that the intracellular Ca2+ concentrations needed to regulate various Ca(2+)-dependent enzymes located in these two compartments are different during BK-induced endothelial cell activation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0143-4160
pubmed:author
pubmed:issnType
Print
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
53-61
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Ca2+ signaling in endothelial cells stimulated by bradykinin: Ca2+ measurement in the mitochondria and the cytosol by confocal microscopy.
pubmed:affiliation
Department of Cell Biology and Anatomy, University of Miami Medical School, Florida 33101, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't