AJCN Tufts Nutrition Symposium, Boston Sept 24-26
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American Journal of Clinical Nutrition, Vol 32, 1043-1050, Copyright © 1979 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Effect of dietary fructose on triglyceride transport and glucoregulatory hormones in hypertriglyceridemic men

JL Turner, EL Bierman, JD Brunzell and A Chait

Effects of dietary fructose on triglyceride metabolism and on basal levels and meal responses of glucose, insulin, and glucagon were studied in six hypertriglyceridemic men, two of whom were also diabetic. Constant composition, weight-maintaining formula diets were used with substitution of fructose for 20% of the carbohydrate calories in both fat-containing (45% carbohydrate) and fat-free (85% carbohydrate) periods; each of the four dietary periods was at least 2 weeks long in every subject. No effect of fructose on fasting levels of triglycerides could be seen in any of the diets. No alterations of triglyceride transport occurred with fructose substitution in the fat- containing diets, but significant reductions of triglyceride transport rates were seen with fructose substitution in the 85% carbohydrate diets using both the heparin infusion lipolytic rate method and the 3H- glycerol methods of assessment of tryglyceride turnover (- 16 and - 21%, respectively). Dietary fructose induced no significant changes in either basal levels or responses during a "formula tolerance test" of glucose, insulin, or glucagon. Thus, dietary fructose given for several weeks does not appear to cause further elevations of plasma triglyceride levels in hypertriglyceridemic men.


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