“ Rutin and naringenin potently inhibited rabbit renal conversion of PGI2 and PGF2 alpha to 6-oxoPGE1 and PGE2, respectively, but had no effect on rat renal 9-hydroxyprostaglandin dehydrogenase activity, prostaglandin breakdown, vascular PGI2 synthesis, platelet aggregation or the anti-aggregatory effect of PGI2 and 6-oxoPGE1.”