Linked Life Data

9747641

Source:http://linkedlifedata.com/resource/pubmed/id/9747641

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1998-12-10
pubmed:abstractText
Prostacyclin (PGI2) produced by vascular endothelial cells (ECs) is a potent vasoactive prostanoid involved in maintenance of vessel wall homeostasis. Reduced PGI2 synthesis by vascular ECs could be a mechanism of pathogenesis in the development of vascular lesions such as diabetic angiopathy. Recently, we purified and cloned a novel bioactive peptide, PGI2-stimulating factor (PSF), which stimulates PGI2 production by vascular ECs. PSF may act on vascular ECs in a paracrine and/or autocrine fashion to regulate PGI2 synthesis. Decreased PSF production in the vessel wall may result in an imbalance of prostanoid synthesis, leading to the development of vascular lesions such as diabetic angiopathy. Our immunohistochemical study demonstrated that PSF is located in vascular resident cells such as vascular smooth muscle cells (SMCs) and ECs, as well as in bronchial SMCs. Moreover, PSF mRNA was found to be expressed in various tissues in Wistar rats, particularly in the kidneys and lungs. The present study demonstrated that streptozotocin (STZ)-induced diabetic rats showed less PSF mRNA expression in the kidneys (PSF mRNA/28S rRNA ratio; STZ versus control; 1.7+/-0.2 versus 2.5+/-0.2, p < 0.05) and reduced immunohistochemical staining for PSF in arteries in the kidney. However, in the lungs, there were no changes in tissue PSF mRNA expression (STZ versus control; 10.9+/-0.9 versus 11.5+/-1.0, NS) or in the extent of PSF staining in bronchial SMCs of STZ-induced diabetic rats. These findings suggest that decreased expression of PSF in renal vessels of STZ-induced diabetic rats may cause an imbalance of prostanoid synthesis, leading to the development and progression of vascular damage in the kidney.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1056-8727
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
252-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:articleTitle
Reduced expression of a novel peptide, prostacyclin-stimulating factor, in the kidneys of streptozotocin-induced diabetic rats.
pubmed:affiliation
Third Department of Internal Medicine, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't