title: [Intestinal lactase and milk consumption before and after gastrectomy].
abstract: Intestinal lactase assays before and after a Billroth II procedure for chronic duodenal ulcer did not reveal a significant difference. Postoperative lactose intolerance is due to the loss of pyloric function, causing entrance of lactose into the jejunum at a rate exceeding the hydrolytic capacity of the mucosa if the lactase level is low.
mesh_terms: D000818:Animals; D001706:Biopsy; D002908:Chronic Disease; D004381:Duodenal Ulcer / Q000601:surgery; D005260:Female; D005696:Galactosidases / Q000378:metabolism*; D005743:Gastrectomy; D006801:Humans; D007422:Intestines / Q000201:enzymology*; D007787:Lactose Intolerance / Q000209:etiology; D008297:Male; D008892:Milk; D011183:Postoperative Complications / Q000209:etiology; D011184:Postoperative Period; D001616:beta-Galactosidase / Q000378:metabolism*
chemical_list: D005696:Galactosidases; D001616:beta-Galactosidase
vernacular_title: Lactase intestinale et consommation de lait avant et après gastrectomie.