tjing
2013-10-02, 16:08
Markedly blunted metabolic effects of fructose in healthy young female subjects compared with male subjects.
Abstract:
OBJECTIVE:
To compare the metabolic effects of fructose in healthy male and female subjects.
RESEARCH DESIGN AND METHODS:
Fasting metabolic profile and hepatic insulin sensitivity were assessed by means of a hyperglycemic clamp in 16 healthy young male and female subjects after a 6-day fructose overfeeding.
RESULTS:
Fructose overfeeding increased fasting triglyceride concentrations by 71 vs. 16% in male vs. female subjects, respectively (P < 0.05). Endogenous glucose production was increased by 12%, alanine aminotransferase concentration was increased by 38%, and fasting insulin concentrations were increased by 14% after fructose overfeeding in male subjects (all P < 0.05) but were not significantly altered in female subjects. Fasting plasma free fatty acids and lipid oxidation were inhibited by fructose in male but not in female subjects.
CONCLUSIONS:
Short-term fructose overfeeding produces hypertriglyceridemia and hepatic insulin resistance in men, but these effects are markedly blunted in healthy young women.
Diabetes Care. 2008 Jun;31(6):1254-6.
http://www.ncbi.nlm.nih.gov/pubmed/18332156
Abstract:
OBJECTIVE:
To compare the metabolic effects of fructose in healthy male and female subjects.
RESEARCH DESIGN AND METHODS:
Fasting metabolic profile and hepatic insulin sensitivity were assessed by means of a hyperglycemic clamp in 16 healthy young male and female subjects after a 6-day fructose overfeeding.
RESULTS:
Fructose overfeeding increased fasting triglyceride concentrations by 71 vs. 16% in male vs. female subjects, respectively (P < 0.05). Endogenous glucose production was increased by 12%, alanine aminotransferase concentration was increased by 38%, and fasting insulin concentrations were increased by 14% after fructose overfeeding in male subjects (all P < 0.05) but were not significantly altered in female subjects. Fasting plasma free fatty acids and lipid oxidation were inhibited by fructose in male but not in female subjects.
CONCLUSIONS:
Short-term fructose overfeeding produces hypertriglyceridemia and hepatic insulin resistance in men, but these effects are markedly blunted in healthy young women.
Diabetes Care. 2008 Jun;31(6):1254-6.
http://www.ncbi.nlm.nih.gov/pubmed/18332156