“Therefore, vitamin K1 modulates the release of AA in vascular cells and thus inhibits the capacity of blood vessels to synthesize PGI2.”
“ Vitamin K1 (1-100 microM) inhibited the release of PGI2 and prostaglandin E2 (PGE2) by bovine aortic endothelial cells in culture, as measured by radioimmunoassay of 6-keto-prostaglandin F1 alpha (6-keto-PGE1 alpha) and PGE2.”