Mahalanabis D, Jalan K N, Maitra T K, Agarwal S K
Am J Clin Nutr. 1976 Dec;29(12):1372-5. doi: 10.1093/ajcn/29.12.1372.
Vitamin A absorption was studied in a group of 28 adult patients with ascariasis and 12 healthy adult controls, using a simplified vitamin A absorption test. In over 70% of the patients with ascariasis malabsorption of vitamin A was demonstrated. Stool egg counts for ascaris were not related to the degree of vitamin A malabsorption. Of the 23 patients in whom a D-xylose absorption test was performed, seven showed excretion less than 20% in 5 hr. Immediately after expulsion of the worms, vitamin A absorption improved in 13 out of 14 patients tested (in nine to normal level). The results of this study suggest that ascariasis in populations on marginal intakes of vitamin A and its precursors is an important contributing factor in producing clinical vitamin A deficiency.
采用简化的维生素A吸收试验，对28例成年蛔虫病患者和12名健康成人对照者的维生素A吸收情况进行了研究。超过70%的蛔虫病患者存在维生素A吸收不良。蛔虫的粪便虫卵计数与维生素A吸收不良的程度无关。在进行D-木糖吸收试验的23例患者中，7例在5小时内排泄量低于20%。在驱除蛔虫后，14例接受检测的患者中有13例（9例恢复到正常水平）维生素A吸收情况得到改善。本研究结果表明，在维生素A及其前体摄入处于边缘水平的人群中，蛔虫病是导致临床维生素A缺乏的一个重要因素。
