Linked Life Data

7503746

Source:http://linkedlifedata.com/resource/pubmed/id/7503746

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1996-1-18
pubmed:abstractText
Osteocytes are extremely sensitive to fluid shear stress, a phenomenon that may be related to mechanical adaptation of bone (FASEB J 9:441,1995). Here we examined the effect of pulsating fluid flow (PFF, 0.5 +/- 0.02 Pa, 5 Hz, 0.4 Pa/sec) on the release of NO, in relation with upregulation of prostaglandin E2 (PGE2). Chicken calvarial osteocytes, but not periosteal fibroblasts, as well as mouse calvarial cells responded to PFF with a rapid and transient 2 to 3-fold stimulation of NO release. The effect was maximal after 5 min and leveled off thereafter. PFF also stimulated PGE2 release. This effect was significant after 10 min and continued throughout 60 min PFF treatment. Inhibition of NO release by NG-monomethyl-L-arginine prevented the effect of PFF on NO as well as PGE2 release. These results suggest that NO is a mediator of mechanical effects in bone, leading to enhanced PGE2 release. They further strengthen the hypothesis that fluid flow through the osteocyte canalicular network provides the physical stimulus for mechanosensation in bone.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
14
pubmed:volume
217
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
640-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Pulsating fluid flow increases nitric oxide (NO) synthesis by osteocytes but not periosteal fibroblasts--correlation with prostaglandin upregulation.
pubmed:affiliation
Dept. Oral Cell Biology, ACTA-Vrije Universiteit, Amsterdam, The Netherlands.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't