Linked Life Data

15670583

Source:http://linkedlifedata.com/resource/pubmed/id/15670583

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2005-1-26
pubmed:abstractText
We investigated P2 receptor expression and function in macrophages from mouse, and in the J774 cell line, and revealed a larger spectrum of P2 receptor subtypes than previously recognised. The nucleotides adenosine triphosphate (ATP), adenosine diphosphate, uridine triphosphate and uridine diphosphate evoked an increase in intracellular calcium and the activation of a potassium current. The sensitivity of these responses to the antagonists suramin, PPADS, MRS 2179 and Cibacron blue suggest the presence of at least three functional P2Y receptor subtypes, most probably P2Y(2), P2Y(4) and P2Y(6). ATP also activated P2X receptors, giving rise to a rapidly activating cation conductance. This response was insensitive to the antagonists suramin and Cibacron blue, was potentiated by Zn(2+) and inhibited by acidification suggesting involvement of P2X(4) receptors. In low divalent cation solution, responses to ATP became larger, and dibenzoyl-ATP became more potent than ATP, indicating the presence of P2X(7) receptors. Immunofluorescence, flow cytometry, Western blots and RT-PCR show that P2X(4) and P2X(7) receptors are the most prominent in both macrophage types, while the expression of the other P2X subunits is variable and sometimes weak or undetectable. These techniques also demonstrated the presence of mRNA for P2Y(1), P2Y(2), P2Y(4) and P2Y(6) receptors along with protein expression for the three subtypes we investigated, namely, P2Y(1), P2Y(2) and P2Y(4).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0006-2952
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
69
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
641-55
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Multiple P2X and P2Y receptor subtypes in mouse J774, spleen and peritoneal macrophages.
pubmed:affiliation
Autonomic Neuroscience Institute, Royal Free and University College Medical School, Rowland Hill Street, London NW3 2PF, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't