Linked Life Data

12353930

Source:http://linkedlifedata.com/resource/pubmed/id/12353930

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2002-9-30
pubmed:abstractText
Neither the source nor the cause of burn-induced myocardial dysfunction is known. Because scald burns have been shown to cause cardiac contractile dysfunction, the purpose of this study was to test the hypothesis that gut-derived myocardial depressant factors were responsible for burn-induced cardiac contractile dysfunction. Male rats were subjected to laparotomy with or without mesenteric lymph duct ligation (LDL). After LDL or sham-LDL, the rats were randomized to receive sham or scald burn (43% TBSA full thickness) after which they were resuscitated for 24 h with 4 mL/kg/%burn of Ringers lactate solution, and then killed, and the hearts removed. Cardiac function was assessed by measuring the left ventricular pressure (LVP) and maximal rate of LVP rise and fall (+/-dP/dt) in response to increases either in 1) preload, 2) coronary flow rate, or 3) perfusate calcium. At 24 h after burn or sham burn and before killing, the mean arterial pressure of the burn group was less than the burn + LDL or the sham burn groups (P < 0.05). Pre-burn LDL significantly prevented burn-induced depression in LVP and +/-dP/dt (P < 0.05). In addition, the hearts harvested from the burn group showed a significant impairment in contraction and relaxation when preload, coronary flow, or perfusate calcium was increased compared with the burn + LDL and sham groups (P < 0.05). Burn-induced cardiac dysfunction, manifested by impaired contraction and relaxation, is prevented by pre-burn lymph duct ligation. These results indicate that gut-derived myocardial depressant factors transported in mesenteric lymph contribute to burn-induced impairment of cardiac contractile function, because burn-induced cardiac dysfunction can be totally abrogated by pre-burn mesenteric lymph duct ligation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1073-2322
pubmed:author
pubmed:issnType
Print
pubmed:volume
18
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
272-6
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Burn-induced impairment of cardiac contractile function is due to gut-derived factors transported in mesenteric lymph.
pubmed:affiliation
Department of Surgery, UMDNJ-New Jersey Medical School, Newark 07103, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.