Low intestinal lactase activity - a 40 years perspective
نویسندگان
چکیده
منابع مشابه
Neonatal intestinal lactase activity.
The sequential changes in intestinal lactase activity of 40 neonates were measured indirectly from the differential uptake and excretion of lactose and the non-metabolisable disaccharide lactulose contained in formula feeds. A daily decline in urinary lactose:lactulose excretion ratios, reflecting a rise in intestinal lactase activity, followed formula feeding. Percentage decline was related di...
متن کاملThe Lactase Activity of the Intestinal Mucosa of the Dog and Some Characteristics of Intestinal Lactase
The early work on intestinal lactase has been reviewed by Plimmer (1906) and Oppenheimer (1925). No uniformity of opinion was reached regarding the presence and dist,ribution of this enzyme in the intestinal mucosa or in intestinal juice. Without attempting to review these investigations again, it suffices to state that some authors found lactase in the small intestine of young animals. Others ...
متن کاملImproved purification of rat intestinal lactase.
A rapid and improved method to obtain purified lactase from rat intestine is described. The purification procedure involved only two chromatographic steps. The degree of purification was far above (500 fold) the values reached with classical methods. Rabbit antisera raised to the purified lactase were characterized using conventional immunological techniques. The specificity of the lactase anti...
متن کاملDissociation and Lactase Activity in Slow Lactose-Fermenting Bacteria of Intestinal Origin.
In 1918 Bronfenbrenner and Davis observed that intestinal bacteria were frequently encountered which failed to show up as lactose fermenters in the routine diagnostic procedure, but which readily did so on subsequent cultivation in media containing lactose in higher concentrations. Studies of the conditions under which the fermentation of lactose by these organisms could be enhanced, with the p...
متن کاملStudies on the expression of intestinal lactase in different individuals.
Sixty one duodenal biopsy specimens were examined for the expression of lactase at the level of enzyme activity, protein, and messenger RNA. Of the 51 samples with normal villous architecture, 39 were lactase persistent, 11 were nonpersistent (adult type hypolactasia), and one was of indeterminate status. All the lactase persistent individuals showed high mRNA and a high level of the lactase pr...
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ژورنال
عنوان ژورنال: Näringsforskning
سال: 2001
ISSN: 0027-7878
DOI: 10.3402/fnr.v45i0.1797