in cf sputum there is a three-fold increase in the level of the vasodilator prostanoid prostaglandin e2 ( pge2 ) and the stable metabolite of prostacyclin , 6-oxo pgf1 alpha compared with the vasoconstrictor prostaglandin f2 alpha ( pgf2 alpha ) and thromboxane b2 ( txb2 ) , a hydrolysis product of thromboxane a2 .
C0012472
prostanoid
C0033554
prostaglandin