Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1994-11-29
pubmed:abstractText
The present study was undertaken to evaluate the effects of R 56865 (N-[1-[4-(4-fluorophenoxy)-butyl]-4-piperidinyl)- N-methyl-2-benzothiazolamine) (Fig. 1) on postischemic ventricular function, an inhibitor of the Na+/Ca2+ overload, in the working heart preparation of the rat. The hearts were paced at 5 Hz and perfused with Tyrode solution of 37 degrees C at a physiological pH. After 15 min of pretreatment with R 56865, low-flow ischemia (30 min) was induced by reducing the perfusion pressure from 51.5 mmHg to 11.0 mmHg and R 56865 was infused simultaneously. The hemodynamic effects of R 56865 were evaluated in the concentration range [10(-8)-3.10(-6) M]. The five parameters measured were: LVP (Left Ventricular Pressure), +dP/dtmax (maximal rate of pressure increase), AO (Aortic Output), CF (Coronary Flow) and CO (Cardiac Output). They were determined in the working heart mode after 15 min of equilibration and at the end of the experiment. From these data the recovery percentages were calculated. The recovery percentages for the LVP, +dP/dtmax, AO, CF and CO for the control hearts (3.3%, 0.0%, 7.9%, 10.4% and 8.5%, respectively) differed significantly from those at 10(-7) M (39.6%, 40.8%, 25.0%, 41.8% and 29.9% respectively). The recovery percentage were the highest at 10(-6) M (79.6%, 82.1%, 54.7%, 92.7% and 67.2%, respectively). The concentration of 10(-7) M was associated with a smaller reduction in LVP (12.9%) than at 10(-6) M (25.7%).(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0028-1298
pubmed:author
pubmed:issnType
Print
pubmed:volume
349
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
619-26
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:7969513-Animals, pubmed-meshheading:7969513-Benzothiazoles, pubmed-meshheading:7969513-Blood Glucose, pubmed-meshheading:7969513-Blood Pressure, pubmed-meshheading:7969513-Body Weight, pubmed-meshheading:7969513-Calcium Channel Blockers, pubmed-meshheading:7969513-Cardiac Output, pubmed-meshheading:7969513-Coronary Circulation, pubmed-meshheading:7969513-Diabetes Mellitus, Experimental, pubmed-meshheading:7969513-Heart, pubmed-meshheading:7969513-Heart Ventricles, pubmed-meshheading:7969513-Hypertension, pubmed-meshheading:7969513-Male, pubmed-meshheading:7969513-Myocardial Ischemia, pubmed-meshheading:7969513-Piperidines, pubmed-meshheading:7969513-Rats, pubmed-meshheading:7969513-Rats, Inbred SHR, pubmed-meshheading:7969513-Rats, Inbred WKY, pubmed-meshheading:7969513-Rats, Wistar, pubmed-meshheading:7969513-Thiazoles, pubmed-meshheading:7969513-Ventricular Function, pubmed-meshheading:7969513-Ventricular Pressure
pubmed:year
1994
pubmed:articleTitle
Effects of R 56865 on postischemic ventricular function in isolated rat working heart preparations obtained from healthy, diabetic and hypertensive animals.
pubmed:affiliation
Department of Pharmacotherapy, University of Amsterdam, The Netherlands.
pubmed:publicationType
Journal Article, In Vitro