administration of arachidonic acid , 3.3-33 nmol , into the heart caused a small transient increase followed by a pronounced decrease in coronary perfusion pressure and increased myocardial tension , heart rate , and the output of prostaglandins ( 6-keto-pgf1 alpha , pge2 , and pgf2 alpha ) .
C0033554
prostaglandins
C0012472
pge2