Studies involving enzymic phosphorylation. 2. Changes in the hexokinase activity of the small intestine of rats caused by feeding different diets

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Abstract
The hexokinase activities of intestinal-mucosa homogenates from rats fed for 8 mos. from weaning on different diets were determined. Highest activity was found in rats fed a fat-free diet and lowest in those fed a high-fat diet. Intermediate values were obtained in rats fed basal (balanced) and high-protein diets. Alkaline phosphatase activities of intestinal mucosa showed no significant differences. Rats fed for only 1 or 2 wks. on high-fat and fat-free diets also showed statistical differences in the hexokinase activities of their intestinal mucosae. No differences were found between hexokinase activities of intestinal muscle of the 2 groups.