Linked Life Data

8095549

Source:http://linkedlifedata.com/resource/pubmed/id/8095549

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1993-4-14
pubmed:abstractText
Atrial natriuretic factor (ANF) suppresses adrenergic and purinergic neurotransmission in the rabbit vas deferens. The neuromodulatory mechanism of action for ANF is not established, but is thought to be independent of cyclic GMP (cGMP) generation. This study directly tested for an involvement of ANF R1 receptors, the receptors coupled to guanylate cyclase activation, in neuromodulatory effects of ANF. The experiments utilized the novel ANF R1 receptor antagonists, anantin and A71915. ANF inhibited both purinergic and adrenergic neurotransmission in a concentration-dependent manner. Neither anantin nor A71915 altered basal neurotransmission or neuromodulatory responses to ANF. Both antagonists significantly attenuated cGMP generation in response to ANF. In contrast, the suppression of cyclic AMP concentrations caused by ANF was sustained in the presence of A71915 but not anantin. The results are consistent with prior observations dissociating neuromodulatory effects of ANF from an elevation in cGMP concentrations. Additionally, ANF increased cGMP concentrations in denervated preparations, suggesting that most if not all ANF R1 receptors are in non-neuronal tissue in the vas deferens. The novel aspect of this study involves the use of selective ANF R1 receptor antagonists to test directly for a neuromodulatory role of ANF R1 receptors. The inability of these structurally distinct ANF R1 receptor antagonists to prevent the neuromodulatory effects of ANF suggests the involvement of ANF R2 (clearance) receptors or another unidentified ANF receptor in mediating the response.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0022-3565
pubmed:author
pubmed:issnType
Print
pubmed:volume
264
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1227-33
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Atrial natriuretic factor alters neurotransmission independently of guanylate cyclase-coupled receptors in the rabbit vas deferens.
pubmed:affiliation
Department of Pharmacology, University of Minnesota-Duluth, School of Medicine.
pubmed:publicationType
Journal Article, In Vitro, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't