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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
1
|
| pubmed:dateCreated |
1990-3-14
|
| pubmed:abstractText |
A Ca++-ionophore, ionomycin, increased the volume of human platelets suspended in a Ca++-containing buffer. This change in cell volume was dependent upon ionomycin and extracellular Ca++ concentrations, suggesting that the volume change occurs when the intracellular Ca++ reaches a certain level (greater than uM as determined by aequorin method). The ionomycin-induced volume increase was suppressed by replacement of extracellular Na+ with membrane-impermeable N-methyl-D-glucamine or Cs+, but not with Li+, K+, or Rb+. Ethylisopropylamiloride, a potent inhibitor of the Na+/H+ exchanger, had only weak inhibitory effect, and the apparent Km for Na+ was approximately 350 mM, which is much larger than that of the Na+/H+ exchanger. It is suggested that certain mechanisms other than the Na+/H+ exchanger are responsible for ionomycin-induced volume increase.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Jan
|
| pubmed:issn |
0049-3848
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:day |
1
|
| pubmed:volume |
57
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
87-95
|
| pubmed:dateRevised |
2004-11-17
|
| pubmed:meshHeading | |
| pubmed:year |
1990
|
| pubmed:articleTitle |
Ionomycin, a Ca++ ionophore, increases platelet volume independently of the Na+/H+ exchanger.
|
| pubmed:affiliation |
Department of Clinical and Laboratory Medicine, Yamanashi Medical College, Japan.
|
| pubmed:publicationType |
Journal Article
|