Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
1983-7-8
pubmed:abstractText
Vascular and nonvascular smooth muscles in 12 different organs from the gastrointestinal, respiratory, and urogenital tracts of the rabbit, cow, dog, sheep, pig, and rat were examined for prostaglandin I2 (PGI2) synthase immunoreactivity by indirect immunocytofluorescence using monoclonal antibodies against the enzyme. Each of 35 different smooth muscle layers tested stained for the PGI2 synthase antigen except the circular smooth muscle of the rabbit large intestine. Interestingly, PGI2 synthase-positive fluorescent staining of smooth muscle was always observed to be associated with both the nuclear and plasma membranes. Our results indicate that most smooth muscle, both vascular and nonvascular, has the capacity to synthesize PGI2. Moreover, the fact that the PGI2 synthase antigen is associated with at least two different organelles in each cell suggests that there are two independent PGI2-synthesizing systems in smooth muscle; one on the nuclear membrane, and one on the plasma membrane. PGI2 formed at these different sites may subserve different functions within the same cell.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
258
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5922-6
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Bimodal distribution of the prostaglandin I2 synthase antigen in smooth muscle cells.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't