Linked Life Data

11672835

Source:http://linkedlifedata.com/resource/pubmed/id/11672835

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2001-10-23
pubmed:abstractText
Angiotensin II (Ang II) is one of the most important vasoconstrictive hormones but is also known to act as a neuromodulator and a neurotransmitter in the central and peripheral nervous systems. In a previous study, we have shown that Ang II, via AT1 receptors, induced depolarization by inhibition of M-type K(+) channels and SK channels in submandibular ganglion (SMG) neurons. In this study, we investigated the effects of Ang II on calcium channel current (I(Ca)) in acutely dissociated SMG neurons by the patch-clamp technique using the whole-cell configuration. Ang II inhibited total I(Ca) by 32.1+/-2.7%. The half-maximum inhibitory concentration (IC(50)) of Ang II for inhibiting I(Ca) was 0.8 microM. In the presence of 1 microM losartan, which is a selective antagonist of AT1 receptors, the effect of Ang II was attenuated (7.6+/-1.5%). Application of a strong depolarizing voltage prepulse did not affect the Ang II-induced inhibition of I(Ca) (32.8+/-2.8%). Intracellular dialysis of GDP-beta-S attenuated the inhibition of I(Ca) (6.8+/-2.1%). The mean percentage inhibitions of L-, N- and P/Q-type VDCCs by Ang II were 29.1+/-1.7, 16.3+/-6.0 and 1.2+/-0.8%, respectively, of the total I(Ca).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0168-0102
pubmed:author
pubmed:issnType
Print
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
227-32
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Angiotensin II-induced inhibition of calcium currents in hamster submandibular ganglion neurons.
pubmed:affiliation
Department of Physiology, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, 261-8502, Chiba, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't