Linked Life Data

6352336

Source:http://linkedlifedata.com/resource/pubmed/id/6352336

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
13
pubmed:dateCreated
1983-11-23
pubmed:abstractText
Symptoms consistent with cardiac disease have been noted as part of the syndrome of lead (Pb) intoxication. All types of cardiotoxicity noted in patients have been reproduced in experimental animals exposed acutely to high concentrations of Pb, or chronically exposed to lower levels. Types of cardiac effects observed include negative inotropism and electrocardiogram abnormalities, particularly conduction defects. Neonatal rats exposed to Pb via the milk of dams provided a drinking solution of lead acetate exhibit approximately four times the sensitivity to the arrhythmogenic effect of norepinephrine as adults compared with controls. Cardiotoxicity occurs after exposure as short as the first 10 postnatal days, but is not expressed until the rats are adult. Increased sensitivity to the arrhythmogenic effect of norepinephrine was seen in Pb-exposed animals in vivo and in isolated hearts from Pb-exposed animals in vitro. Norepinephrine arrhythmogenesis in vivo was attenuated by atropine or vagotomy, which indicates vagal nerve involvement. Possible mechanisms including interference with central gamma-aminobutyric acid systems, alteration of adrenergic nerve development, and Pb-Ca interaction are discussed.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0014-9446
pubmed:author
pubmed:issnType
Print
pubmed:volume
42
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2989-93
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Cardiac effects of lead.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Review