Linked Life Data

15804044

Source:http://linkedlifedata.com/resource/pubmed/id/15804044

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2005-4-4
pubmed:abstractText
The isolated spleens from male and female mice lacking P2X(2) and P2X(3) receptors (P2X(2)/P2X(3) knockout (KO) mice) and those from wild-type (WT) mice were investigated by flow cytometry, immunohistochemistry and functionally by organ-bath pharmacology. The spleens from the P2X(2)/P2X(3) KO mice weighed significantly more than the corresponding WT mice. Flow cytometry was used to isolate the mononuclear cells, which were then phenotyped. T-lymphocytes, B-lymphocytes and macrophages were identified and counted. It was found that the increase in size of the spleens from the KO animals corresponded to an increase in the numbers of mononuclear cells present and that all three cell types (T-lymphocytes, B-lymphocytes and macrophages) increased in much the same proportion as those from the WT animals. Immunohistochemical localisation of P2Y(1), P2Y(2) and P2X(1) receptors revealed their presence on the spleen capsule and trabeculae. P2X(1) receptors were also present on blood vessels. There was no difference in the expression of these receptors between the WT and P2X(2)/P2X(3) KO spleens. Functional studies revealed the presence of multiple P2 receptors inducing the contraction of the spleen capsule, from both WT and KO mice. There was no difference in the contractions induced by adenosine 5'-triphosphate (ATP), alpha,beta-methylene ATP, 2-methylthio ADP or uridine triphosphate from WT and KO mice. It is concluded that mice lacking both P2X(2) and P2X(3) receptors have enlarged spleens and that this is correlated with an increase in the number of immune cells, perhaps as a consequence of a compromised immune system and chronic infection.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0171-2985
pubmed:author
pubmed:issnType
Print
pubmed:volume
209
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
661-8
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Impairment of the splenic immune system in P2X(2)/P2X(3) knockout mice.
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