视黄醇代谢和转运
中文名称
通路描述
维生素 A（全反式视黄醇）必须从植物中的胡萝卜素或动物食品中的视黄醇酯摄取。最显著的胡萝卜素是α-胡萝卜素、番茄红素、叶黄素、β-隐黄质和特别β-胡萝卜素。摄取后，它们主要被分解为视黄醇。视黄醇酯像其他脂肪一样水解。在肠细胞中，视黄醇与视黄醇结合蛋白（RBP）结合。从肠细胞到肝脏的转运通过乳糜微粒进行（Harrison & Hussain 2001, Harrison 2005）。
英文描述
Retinoid metabolism and transport Vitamin A (all-trans-retinol) must be taken up, either as carotenes from plants, or as retinyl esters from animal food. The most prominent carotenes are alpha-carotene, lycopene, lutein, beta-cryptoxanthine, and especially beta-carotene. After uptake they are mostly broken down to retinal. Retinyl esters are hydrolysed like other fats. In enterocytes, retinoids bind to retinol-binding protein (RBP). Transport from enterocytes to the liver happens via chylomicrons (Harrison & Hussain 2001, Harrison 2005).
所含基因
34 个基因