Linked Life Data

10733932

Source:http://linkedlifedata.com/resource/pubmed/id/10733932

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2000-5-4
pubmed:abstractText
The primary regulator of PTH secretion is serum ionized Ca(2+); however, neuropeptide-containing nerve fibers have been localized to the parathyroid gland. The purpose of this study was to determine whether or not substance P (SP) regulates PTH secretion. In dispersed porcine parathyroid cells, SP reversibly inhibited 0.5 mM CaCl(2)-induced PTH secretion (IC(50) = 0.29 nM) and had no effect at CaCl(2) concentrations of 1.5 mM and greater. At 0.5 mM CaCl(2), treatment with a NK-1 selective receptor agonist resulted in a concentration-dependent decrease in PTH secretion (IC(50) = 0.21 nM). In contrast, NK-2 and NK-3 receptor agonists were approximately 100-fold less active than SP or the NK-1 receptor selective agonist. An enantiospecific reversal of the effects of SP on PTH secretion was observed with LY306740, a potent selective NK-1 receptor antagonist (K(i) = 0.125 nM). In porcine parathyroid cells, expression of mRNA for the NK-1 receptor was observed using RT-PCR. In summary, a novel neuroendocrine pathway is described whereby the neuropeptide, SP, regulates PTH secretion through NK-1 receptors.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-291X
pubmed:author
pubmed:copyrightInfo
Copyright 2000 Academic Press.
pubmed:issnType
Print
pubmed:day
2
pubmed:volume
270
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
230-4
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Substance P regulates PTH secretion through the neurokinin-1 receptor.
pubmed:affiliation
Endocrine Division, Neurosciences Division, Lilly Research Laboratories, Lilly Corporate Center, Indianapolis, Indiana 46285, USA. Galvin_Rachelle_J_S@Lilly.com
pubmed:publicationType
Journal Article, Comparative Study