Nutr Rev. 1991 Sep;49(9):283-4. doi: 10.1111/j.1753-4887.1991.tb07423.x.
All-trans and 13-cis-retinoic acids are normal constituents of human blood. Blood levels of both compounds increase upon oral ingestion of all-trans-retinyl palmitate, to a greater extent with higher amounts of ingested retinyl palmitate. These data suggest a mechanism whereby levels of dietary vitamin A could influence blood levels of the known cancer chemopreventive retinoic acids.
全反式维甲酸和13-顺式维甲酸是人体血液中的正常成分。口服全反式棕榈酸视黄酯后,这两种化合物的血液水平都会升高,摄入的棕榈酸视黄酯量越高,升高幅度越大。这些数据提示了一种机制,即膳食维生素A水平可能会影响已知的癌症化学预防剂维甲酸的血液水平。