Linked Life Data

9143232

Source:http://linkedlifedata.com/resource/pubmed/id/9143232

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1997-6-3
pubmed:abstractText
The neuropeptide substance P (SP) is a mediator of neuro-inflammation and can play a role by induction of histamine release (HR) and TNF-alpha. However, its effect on the heterogeneous response of mast cells (MC) has not been completely studied. We have established that the SR can induce 25% of HR in highly purified rat uterine MC at diestrous but not at proestrous phases of the reproductive cycle and 88% of HR in peritoneal mast cells (PMC). We also found 2.2 fold increase in TNF-alpha mRNA at diestrous, in SP stimulated uterine MC versus control and 2.7 fold increase in PMC; RT and competitive PCR were used to amplify the TNF-alpha mRNA. We have thereafter investigated the mechanism whereby the binding of SP to sialic acid on the MC membrane, could trigger secretion of histamine and induction of TNF-alpha mRNA. The neuraminidase pretreatment (0.1 U/ml) inhibited SP-stimulated HR from either uterine MC and PMC (98% and 50%, respectively) and totally inhibited SP-stimulated TNF-alpha mRNA levels. The neuraminidase effect was not toxic, since it was not observed in IgE mediated HR and TNF-alpha mRNA levels. In conclusion, the inhibitory effect of the neuraminidase on the SP-mediated increase of histamine and TNF-alpha mRNA, suggests that the SP-sialic acid interaction could have a role in the MC heterogeneous response.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0165-5728
pubmed:author
pubmed:issnType
Print
pubmed:volume
75
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
9-18
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Inhibitory effect of neuraminidase on SP-induced histamine release and TNF-alpha mRNA in rat mast cells: evidence of a receptor-independent mechanism.
pubmed:affiliation
Istituto di Biologia dello Sviluppo, CNR, Palermo, Italy. geraci@mbox.unipa.it
pubmed:publicationType
Journal Article