Lactase deficiency in Thailand: effect of prolonged lactose feeding.
Lactase deficiency in Thailand: effect of prolonged lactose feeding.
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泰国乳糖酶缺乏症：长期乳糖喂养的影响。
DOI：
10.1093/ajcn/22.5.638
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发表时间：
1969
期刊：
影响因子：
--
通讯作者：
N. Bhamarapravathi
中科院分区：
文献类型：
--
作者：
G. Keusch;F. Troncale;B. Thavaramara;P. Prinyanont;P. R. Anderson;N. Bhamarapravathi
NATTH BHAMARAPRAVATHI，M7 I肠乳糖酶（f3-半乳糖苷酶），乳糖分解和吸收所必需，乳糖是牛奶中的糖成分，d！在几种哺乳动物中，断奶后的水平降低或不存在（1，2）。加州海狮（Zalophus californianus）的乳汁中不含乳糖，因此根本没有肠道乳糖酶（3-5）。这些数据表明，乳糖酶在哺乳动物中可能是一种适应性酶。人类哺乳期后下降的失败与这一假设是一致的，因为持续的！在婴儿期后的二重唱中加入牛奶和奶制品。虽然Cuatrecasas et a！. (6)报告说，正常受试者的乳糖吸收减少，无乳糖饮食，数据来自severa！最近的研究表明，
NATTH BHAMARAPRAVATHI, M7 I NTESTINAL LACTASE (f3-galactosidase), necessary for tile breakdown and absorption of lactose, tile sugar component of milk, d!eclines to low or absent levels in the postweaning period in several species of mammals (1, 2). The California sea lion ( Zalophus californianus), whose milk does not contain lactose, does not have an intestinal lactase at all (3-5). These data suggest that lactase in mammals may be an adaptive enzyme. Tile failure of the postsuckling decline to occur in man would be consistent with this hypothesis because of the continued! inclusion of milk and milk products in the duet after infancy. Although Cuatrecasas et a!. (6) reported decreased lactose absorption in normal subjects on a prolonged! lactose-free diet, data from severa! recent studies ilave not supported the