Linked Life Data

1443192

Source:http://linkedlifedata.com/resource/pubmed/id/1443192

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5 Pt 2
pubmed:dateCreated
1992-12-22
pubmed:abstractText
This study investigated the acute effects of glucocorticoids and mineralocorticoids on atrial natriuretic factor (ANF) biosynthesis in vivo. Groups of male Sprague-Dawley rats were injected with 1 mg dexamethasone (Dex), 10 mg deoxycorticosterone acetate (DOCA) or vehicle alone. Different groups were studied after periods of 30 min to 8 h. Plasma and left atrial ANF concentrations and ANF mRNA levels were measured 2-8 h after corticoid injection. From 30 min to 2 h after injection, ANF mRNA was analyzed by quantitative and qualitative assessments. There was a two- to threefold increase in plasma levels of ANF in Dex-treated rats compared with controls at all time periods (P < 0.05). Although ANF plasma levels increased over time following DOCA treatment, they were not significantly different from control values. Dex treatment also increased normalized ANF mRNA levels 77% above control levels during the first 4 h after injection (P < 0.05). Thereafter there was a return of mRNA levels to that seen in controls. There was no qualitative difference in the ANF mRNA at any time as assessed by Northern hybridization. In contrast, DOCA increased ANF mRNA levels only after 8 h (P < 0.05). No significant changes in left atrial ANF content were noted during this study. In a separate study, Dex was administered to isolated left atria in vitro in a superfusion system. Superfusion with 2 x 10(-5) M Dex produced a 40% increase in ANF secretory rate within 20 min (P = 0.036). We conclude that Dex induces a direct rapid increase in ANF mRNA levels and ANF secretion in rats.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0002-9513
pubmed:author
pubmed:issnType
Print
pubmed:volume
263
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
H1377-81
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Corticoid regulation of atrial natriuretic factor secretion and gene expression.
pubmed:affiliation
Division of Endocrinology, University of Michigan, Ann Arbor 48109.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't