Berzin' N I, Markov Iu G, Val'dman A R
Biull Eksp Biol Med. 1989 Jul;108(7):37-40.
Vitamin A increase the accumulation and transport of zinc in the chick ileal mucosa. Regulating effect of this vitamin on the mentioned processes was already observed in the initial stage zinc uptake in the intestinal mucosa--its storage in the mucus layer. Stimulation of zinc absorption by vitamin A can be related to a specific carrier-vitamin A-dependent zinc-binding protein. Presence of zinc in the smooth endoplasmic reticulum of the enterocyte apical zone suggests the role of this organelle in the cation homeostasis in the cell.
维生素A可增加雏鸡回肠黏膜中锌的积累和转运。在肠道黏膜锌摄取的初始阶段——锌在黏液层中的储存过程中，已观察到这种维生素对上述过程的调节作用。维生素A对锌吸收的刺激作用可能与一种特定的载体——维生素A依赖性锌结合蛋白有关。肠细胞顶端区域滑面内质网中存在锌，表明该细胞器在细胞阳离子稳态中发挥作用。
